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Merge tag 'gpio-v3.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
[linux-2.6.git] / drivers / bluetooth / btusb.c
blobf3dfc0a88fdcb95e25647caa6cfc14a1d9a5a484
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(0x0b05, 0x17cb) },
106 { USB_DEVICE(0x04ca, 0x2003) },
107 { USB_DEVICE(0x0489, 0xe042) },
108 { USB_DEVICE(0x413c, 0x8197) },
109
110 /* Foxconn - Hon Hai */
111 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
112
113 /*Broadcom devices with vendor specific id */
114 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
115
116 /* Belkin F8065bf - Broadcom based */
117 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
118
119 { } /* Terminating entry */
120 };
121
122 MODULE_DEVICE_TABLE(usb, btusb_table);
123
124 static struct usb_device_id blacklist_table[] = {
125 /* CSR BlueCore devices */
126 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
127
128 /* Broadcom BCM2033 without firmware */
129 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
130
131 /* Atheros 3011 with sflash firmware */
132 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
133 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
134 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
135 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
136 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
137 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
138
139 /* Atheros AR9285 Malbec with sflash firmware */
140 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
141
142 /* Atheros 3012 with sflash firmware */
143 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
144 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
145 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
146 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
147 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
148 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
149 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
150 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
151 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
152 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
153 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
154 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
155 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
156 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
157 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
158 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
159 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
160 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
161 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
162 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
163 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
164 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
165 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
166
167 /* Atheros AR5BBU12 with sflash firmware */
168 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
169
170 /* Atheros AR5BBU12 with sflash firmware */
171 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
172 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
173
174 /* Broadcom BCM2035 */
175 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
176 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
177 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
178
179 /* Broadcom BCM2045 */
180 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
181 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
182
183 /* IBM/Lenovo ThinkPad with Broadcom chip */
184 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
185 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
186
187 /* HP laptop with Broadcom chip */
188 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
189
190 /* Dell laptop with Broadcom chip */
191 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
192
193 /* Dell Wireless 370 and 410 devices */
194 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
195 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
196
197 /* Belkin F8T012 and F8T013 devices */
198 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
199 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
200
201 /* Asus WL-BTD202 device */
202 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
203
204 /* Kensington Bluetooth USB adapter */
205 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
206
207 /* RTX Telecom based adapters with buggy SCO support */
208 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
209 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
210
211 /* CONWISE Technology based adapters with buggy SCO support */
212 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
213
214 /* Digianswer devices */
215 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
216 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
217
218 /* CSR BlueCore Bluetooth Sniffer */
219 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
220
221 /* Frontline ComProbe Bluetooth Sniffer */
222 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
223
224 /* Intel Bluetooth device */
225 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
226
227 { } /* Terminating entry */
228 };
229
230 #define BTUSB_MAX_ISOC_FRAMES 10
231
232 #define BTUSB_INTR_RUNNING 0
233 #define BTUSB_BULK_RUNNING 1
234 #define BTUSB_ISOC_RUNNING 2
235 #define BTUSB_SUSPENDING 3
236 #define BTUSB_DID_ISO_RESUME 4
237
238 struct btusb_data {
239 struct hci_dev *hdev;
240 struct usb_device *udev;
241 struct usb_interface *intf;
242 struct usb_interface *isoc;
243
244 spinlock_t lock;
245
246 unsigned long flags;
247
248 struct work_struct work;
249 struct work_struct waker;
250
251 struct usb_anchor tx_anchor;
252 struct usb_anchor intr_anchor;
253 struct usb_anchor bulk_anchor;
254 struct usb_anchor isoc_anchor;
255 struct usb_anchor deferred;
256 int tx_in_flight;
257 spinlock_t txlock;
258
259 struct usb_endpoint_descriptor *intr_ep;
260 struct usb_endpoint_descriptor *bulk_tx_ep;
261 struct usb_endpoint_descriptor *bulk_rx_ep;
262 struct usb_endpoint_descriptor *isoc_tx_ep;
263 struct usb_endpoint_descriptor *isoc_rx_ep;
264
265 __u8 cmdreq_type;
266
267 unsigned int sco_num;
268 int isoc_altsetting;
269 int suspend_count;
270 };
271
272 static int inc_tx(struct btusb_data *data)
273 {
274 unsigned long flags;
275 int rv;
276
277 spin_lock_irqsave(&data->txlock, flags);
278 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
279 if (!rv)
280 data->tx_in_flight++;
281 spin_unlock_irqrestore(&data->txlock, flags);
282
283 return rv;
284 }
285
286 static void btusb_intr_complete(struct urb *urb)
287 {
288 struct hci_dev *hdev = urb->context;
289 struct btusb_data *data = hci_get_drvdata(hdev);
290 int err;
291
292 BT_DBG("%s urb %p status %d count %d", hdev->name,
293 urb, urb->status, urb->actual_length);
294
295 if (!test_bit(HCI_RUNNING, &hdev->flags))
296 return;
297
298 if (urb->status == 0) {
299 hdev->stat.byte_rx += urb->actual_length;
300
301 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
302 urb->transfer_buffer,
303 urb->actual_length) < 0) {
304 BT_ERR("%s corrupted event packet", hdev->name);
305 hdev->stat.err_rx++;
306 }
307 }
308
309 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
310 return;
311
312 usb_mark_last_busy(data->udev);
313 usb_anchor_urb(urb, &data->intr_anchor);
314
315 err = usb_submit_urb(urb, GFP_ATOMIC);
316 if (err < 0) {
317 /* -EPERM: urb is being killed;
318 * -ENODEV: device got disconnected */
319 if (err != -EPERM && err != -ENODEV)
320 BT_ERR("%s urb %p failed to resubmit (%d)",
321 hdev->name, urb, -err);
322 usb_unanchor_urb(urb);
323 }
324 }
325
326 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
327 {
328 struct btusb_data *data = hci_get_drvdata(hdev);
329 struct urb *urb;
330 unsigned char *buf;
331 unsigned int pipe;
332 int err, size;
333
334 BT_DBG("%s", hdev->name);
335
336 if (!data->intr_ep)
337 return -ENODEV;
338
339 urb = usb_alloc_urb(0, mem_flags);
340 if (!urb)
341 return -ENOMEM;
342
343 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
344
345 buf = kmalloc(size, mem_flags);
346 if (!buf) {
347 usb_free_urb(urb);
348 return -ENOMEM;
349 }
350
351 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
352
353 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
354 btusb_intr_complete, hdev,
355 data->intr_ep->bInterval);
356
357 urb->transfer_flags |= URB_FREE_BUFFER;
358
359 usb_anchor_urb(urb, &data->intr_anchor);
360
361 err = usb_submit_urb(urb, mem_flags);
362 if (err < 0) {
363 if (err != -EPERM && err != -ENODEV)
364 BT_ERR("%s urb %p submission failed (%d)",
365 hdev->name, urb, -err);
366 usb_unanchor_urb(urb);
367 }
368
369 usb_free_urb(urb);
370
371 return err;
372 }
373
374 static void btusb_bulk_complete(struct urb *urb)
375 {
376 struct hci_dev *hdev = urb->context;
377 struct btusb_data *data = hci_get_drvdata(hdev);
378 int err;
379
380 BT_DBG("%s urb %p status %d count %d", hdev->name,
381 urb, urb->status, urb->actual_length);
382
383 if (!test_bit(HCI_RUNNING, &hdev->flags))
384 return;
385
386 if (urb->status == 0) {
387 hdev->stat.byte_rx += urb->actual_length;
388
389 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
390 urb->transfer_buffer,
391 urb->actual_length) < 0) {
392 BT_ERR("%s corrupted ACL packet", hdev->name);
393 hdev->stat.err_rx++;
394 }
395 }
396
397 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
398 return;
399
400 usb_anchor_urb(urb, &data->bulk_anchor);
401 usb_mark_last_busy(data->udev);
402
403 err = usb_submit_urb(urb, GFP_ATOMIC);
404 if (err < 0) {
405 /* -EPERM: urb is being killed;
406 * -ENODEV: device got disconnected */
407 if (err != -EPERM && err != -ENODEV)
408 BT_ERR("%s urb %p failed to resubmit (%d)",
409 hdev->name, urb, -err);
410 usb_unanchor_urb(urb);
411 }
412 }
413
414 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
415 {
416 struct btusb_data *data = hci_get_drvdata(hdev);
417 struct urb *urb;
418 unsigned char *buf;
419 unsigned int pipe;
420 int err, size = HCI_MAX_FRAME_SIZE;
421
422 BT_DBG("%s", hdev->name);
423
424 if (!data->bulk_rx_ep)
425 return -ENODEV;
426
427 urb = usb_alloc_urb(0, mem_flags);
428 if (!urb)
429 return -ENOMEM;
430
431 buf = kmalloc(size, mem_flags);
432 if (!buf) {
433 usb_free_urb(urb);
434 return -ENOMEM;
435 }
436
437 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
438
439 usb_fill_bulk_urb(urb, data->udev, pipe,
440 buf, size, btusb_bulk_complete, hdev);
441
442 urb->transfer_flags |= URB_FREE_BUFFER;
443
444 usb_mark_last_busy(data->udev);
445 usb_anchor_urb(urb, &data->bulk_anchor);
446
447 err = usb_submit_urb(urb, mem_flags);
448 if (err < 0) {
449 if (err != -EPERM && err != -ENODEV)
450 BT_ERR("%s urb %p submission failed (%d)",
451 hdev->name, urb, -err);
452 usb_unanchor_urb(urb);
453 }
454
455 usb_free_urb(urb);
456
457 return err;
458 }
459
460 static void btusb_isoc_complete(struct urb *urb)
461 {
462 struct hci_dev *hdev = urb->context;
463 struct btusb_data *data = hci_get_drvdata(hdev);
464 int i, err;
465
466 BT_DBG("%s urb %p status %d count %d", hdev->name,
467 urb, urb->status, urb->actual_length);
468
469 if (!test_bit(HCI_RUNNING, &hdev->flags))
470 return;
471
472 if (urb->status == 0) {
473 for (i = 0; i < urb->number_of_packets; i++) {
474 unsigned int offset = urb->iso_frame_desc[i].offset;
475 unsigned int length = urb->iso_frame_desc[i].actual_length;
476
477 if (urb->iso_frame_desc[i].status)
478 continue;
479
480 hdev->stat.byte_rx += length;
481
482 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
483 urb->transfer_buffer + offset,
484 length) < 0) {
485 BT_ERR("%s corrupted SCO packet", hdev->name);
486 hdev->stat.err_rx++;
487 }
488 }
489 }
490
491 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
492 return;
493
494 usb_anchor_urb(urb, &data->isoc_anchor);
495
496 err = usb_submit_urb(urb, GFP_ATOMIC);
497 if (err < 0) {
498 /* -EPERM: urb is being killed;
499 * -ENODEV: device got disconnected */
500 if (err != -EPERM && err != -ENODEV)
501 BT_ERR("%s urb %p failed to resubmit (%d)",
502 hdev->name, urb, -err);
503 usb_unanchor_urb(urb);
504 }
505 }
506
507 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
508 {
509 int i, offset = 0;
510
511 BT_DBG("len %d mtu %d", len, mtu);
512
513 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
514 i++, offset += mtu, len -= mtu) {
515 urb->iso_frame_desc[i].offset = offset;
516 urb->iso_frame_desc[i].length = mtu;
517 }
518
519 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
520 urb->iso_frame_desc[i].offset = offset;
521 urb->iso_frame_desc[i].length = len;
522 i++;
523 }
524
525 urb->number_of_packets = i;
526 }
527
528 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
529 {
530 struct btusb_data *data = hci_get_drvdata(hdev);
531 struct urb *urb;
532 unsigned char *buf;
533 unsigned int pipe;
534 int err, size;
535
536 BT_DBG("%s", hdev->name);
537
538 if (!data->isoc_rx_ep)
539 return -ENODEV;
540
541 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
542 if (!urb)
543 return -ENOMEM;
544
545 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
546 BTUSB_MAX_ISOC_FRAMES;
547
548 buf = kmalloc(size, mem_flags);
549 if (!buf) {
550 usb_free_urb(urb);
551 return -ENOMEM;
552 }
553
554 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
555
556 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
557 hdev, data->isoc_rx_ep->bInterval);
558
559 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
560
561 __fill_isoc_descriptor(urb, size,
562 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
563
564 usb_anchor_urb(urb, &data->isoc_anchor);
565
566 err = usb_submit_urb(urb, mem_flags);
567 if (err < 0) {
568 if (err != -EPERM && err != -ENODEV)
569 BT_ERR("%s urb %p submission failed (%d)",
570 hdev->name, urb, -err);
571 usb_unanchor_urb(urb);
572 }
573
574 usb_free_urb(urb);
575
576 return err;
577 }
578
579 static void btusb_tx_complete(struct urb *urb)
580 {
581 struct sk_buff *skb = urb->context;
582 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
583 struct btusb_data *data = hci_get_drvdata(hdev);
584
585 BT_DBG("%s urb %p status %d count %d", hdev->name,
586 urb, urb->status, urb->actual_length);
587
588 if (!test_bit(HCI_RUNNING, &hdev->flags))
589 goto done;
590
591 if (!urb->status)
592 hdev->stat.byte_tx += urb->transfer_buffer_length;
593 else
594 hdev->stat.err_tx++;
595
596 done:
597 spin_lock(&data->txlock);
598 data->tx_in_flight--;
599 spin_unlock(&data->txlock);
600
601 kfree(urb->setup_packet);
602
603 kfree_skb(skb);
604 }
605
606 static void btusb_isoc_tx_complete(struct urb *urb)
607 {
608 struct sk_buff *skb = urb->context;
609 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
610
611 BT_DBG("%s urb %p status %d count %d", hdev->name,
612 urb, urb->status, urb->actual_length);
613
614 if (!test_bit(HCI_RUNNING, &hdev->flags))
615 goto done;
616
617 if (!urb->status)
618 hdev->stat.byte_tx += urb->transfer_buffer_length;
619 else
620 hdev->stat.err_tx++;
621
622 done:
623 kfree(urb->setup_packet);
624
625 kfree_skb(skb);
626 }
627
628 static int btusb_open(struct hci_dev *hdev)
629 {
630 struct btusb_data *data = hci_get_drvdata(hdev);
631 int err;
632
633 BT_DBG("%s", hdev->name);
634
635 err = usb_autopm_get_interface(data->intf);
636 if (err < 0)
637 return err;
638
639 data->intf->needs_remote_wakeup = 1;
640
641 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
642 goto done;
643
644 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
645 goto done;
646
647 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
648 if (err < 0)
649 goto failed;
650
651 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
652 if (err < 0) {
653 usb_kill_anchored_urbs(&data->intr_anchor);
654 goto failed;
655 }
656
657 set_bit(BTUSB_BULK_RUNNING, &data->flags);
658 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
659
660 done:
661 usb_autopm_put_interface(data->intf);
662 return 0;
663
664 failed:
665 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
666 clear_bit(HCI_RUNNING, &hdev->flags);
667 usb_autopm_put_interface(data->intf);
668 return err;
669 }
670
671 static void btusb_stop_traffic(struct btusb_data *data)
672 {
673 usb_kill_anchored_urbs(&data->intr_anchor);
674 usb_kill_anchored_urbs(&data->bulk_anchor);
675 usb_kill_anchored_urbs(&data->isoc_anchor);
676 }
677
678 static int btusb_close(struct hci_dev *hdev)
679 {
680 struct btusb_data *data = hci_get_drvdata(hdev);
681 int err;
682
683 BT_DBG("%s", hdev->name);
684
685 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
686 return 0;
687
688 cancel_work_sync(&data->work);
689 cancel_work_sync(&data->waker);
690
691 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
692 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
693 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
694
695 btusb_stop_traffic(data);
696 err = usb_autopm_get_interface(data->intf);
697 if (err < 0)
698 goto failed;
699
700 data->intf->needs_remote_wakeup = 0;
701 usb_autopm_put_interface(data->intf);
702
703 failed:
704 usb_scuttle_anchored_urbs(&data->deferred);
705 return 0;
706 }
707
708 static int btusb_flush(struct hci_dev *hdev)
709 {
710 struct btusb_data *data = hci_get_drvdata(hdev);
711
712 BT_DBG("%s", hdev->name);
713
714 usb_kill_anchored_urbs(&data->tx_anchor);
715
716 return 0;
717 }
718
719 static int btusb_send_frame(struct sk_buff *skb)
720 {
721 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
722 struct btusb_data *data = hci_get_drvdata(hdev);
723 struct usb_ctrlrequest *dr;
724 struct urb *urb;
725 unsigned int pipe;
726 int err;
727
728 BT_DBG("%s", hdev->name);
729
730 if (!test_bit(HCI_RUNNING, &hdev->flags))
731 return -EBUSY;
732
733 switch (bt_cb(skb)->pkt_type) {
734 case HCI_COMMAND_PKT:
735 urb = usb_alloc_urb(0, GFP_ATOMIC);
736 if (!urb)
737 return -ENOMEM;
738
739 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
740 if (!dr) {
741 usb_free_urb(urb);
742 return -ENOMEM;
743 }
744
745 dr->bRequestType = data->cmdreq_type;
746 dr->bRequest = 0;
747 dr->wIndex = 0;
748 dr->wValue = 0;
749 dr->wLength = __cpu_to_le16(skb->len);
750
751 pipe = usb_sndctrlpipe(data->udev, 0x00);
752
753 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
754 skb->data, skb->len, btusb_tx_complete, skb);
755
756 hdev->stat.cmd_tx++;
757 break;
758
759 case HCI_ACLDATA_PKT:
760 if (!data->bulk_tx_ep)
761 return -ENODEV;
762
763 urb = usb_alloc_urb(0, GFP_ATOMIC);
764 if (!urb)
765 return -ENOMEM;
766
767 pipe = usb_sndbulkpipe(data->udev,
768 data->bulk_tx_ep->bEndpointAddress);
769
770 usb_fill_bulk_urb(urb, data->udev, pipe,
771 skb->data, skb->len, btusb_tx_complete, skb);
772
773 hdev->stat.acl_tx++;
774 break;
775
776 case HCI_SCODATA_PKT:
777 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
778 return -ENODEV;
779
780 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
781 if (!urb)
782 return -ENOMEM;
783
784 pipe = usb_sndisocpipe(data->udev,
785 data->isoc_tx_ep->bEndpointAddress);
786
787 usb_fill_int_urb(urb, data->udev, pipe,
788 skb->data, skb->len, btusb_isoc_tx_complete,
789 skb, data->isoc_tx_ep->bInterval);
790
791 urb->transfer_flags = URB_ISO_ASAP;
792
793 __fill_isoc_descriptor(urb, skb->len,
794 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
795
796 hdev->stat.sco_tx++;
797 goto skip_waking;
798
799 default:
800 return -EILSEQ;
801 }
802
803 err = inc_tx(data);
804 if (err) {
805 usb_anchor_urb(urb, &data->deferred);
806 schedule_work(&data->waker);
807 err = 0;
808 goto done;
809 }
810
811 skip_waking:
812 usb_anchor_urb(urb, &data->tx_anchor);
813
814 err = usb_submit_urb(urb, GFP_ATOMIC);
815 if (err < 0) {
816 if (err != -EPERM && err != -ENODEV)
817 BT_ERR("%s urb %p submission failed (%d)",
818 hdev->name, urb, -err);
819 kfree(urb->setup_packet);
820 usb_unanchor_urb(urb);
821 } else {
822 usb_mark_last_busy(data->udev);
823 }
824
825 done:
826 usb_free_urb(urb);
827 return err;
828 }
829
830 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
831 {
832 struct btusb_data *data = hci_get_drvdata(hdev);
833
834 BT_DBG("%s evt %d", hdev->name, evt);
835
836 if (hdev->conn_hash.sco_num != data->sco_num) {
837 data->sco_num = hdev->conn_hash.sco_num;
838 schedule_work(&data->work);
839 }
840 }
841
842 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
843 {
844 struct btusb_data *data = hci_get_drvdata(hdev);
845 struct usb_interface *intf = data->isoc;
846 struct usb_endpoint_descriptor *ep_desc;
847 int i, err;
848
849 if (!data->isoc)
850 return -ENODEV;
851
852 err = usb_set_interface(data->udev, 1, altsetting);
853 if (err < 0) {
854 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
855 return err;
856 }
857
858 data->isoc_altsetting = altsetting;
859
860 data->isoc_tx_ep = NULL;
861 data->isoc_rx_ep = NULL;
862
863 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
864 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
865
866 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
867 data->isoc_tx_ep = ep_desc;
868 continue;
869 }
870
871 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
872 data->isoc_rx_ep = ep_desc;
873 continue;
874 }
875 }
876
877 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
878 BT_ERR("%s invalid SCO descriptors", hdev->name);
879 return -ENODEV;
880 }
881
882 return 0;
883 }
884
885 static void btusb_work(struct work_struct *work)
886 {
887 struct btusb_data *data = container_of(work, struct btusb_data, work);
888 struct hci_dev *hdev = data->hdev;
889 int new_alts;
890 int err;
891
892 if (hdev->conn_hash.sco_num > 0) {
893 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
894 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
895 if (err < 0) {
896 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
897 usb_kill_anchored_urbs(&data->isoc_anchor);
898 return;
899 }
900
901 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
902 }
903
904 if (hdev->voice_setting & 0x0020) {
905 static const int alts[3] = { 2, 4, 5 };
906 new_alts = alts[hdev->conn_hash.sco_num - 1];
907 } else {
908 new_alts = hdev->conn_hash.sco_num;
909 }
910
911 if (data->isoc_altsetting != new_alts) {
912 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
913 usb_kill_anchored_urbs(&data->isoc_anchor);
914
915 if (__set_isoc_interface(hdev, new_alts) < 0)
916 return;
917 }
918
919 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
920 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
921 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
922 else
923 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
924 }
925 } else {
926 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
927 usb_kill_anchored_urbs(&data->isoc_anchor);
928
929 __set_isoc_interface(hdev, 0);
930 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
931 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
932 }
933 }
934
935 static void btusb_waker(struct work_struct *work)
936 {
937 struct btusb_data *data = container_of(work, struct btusb_data, waker);
938 int err;
939
940 err = usb_autopm_get_interface(data->intf);
941 if (err < 0)
942 return;
943
944 usb_autopm_put_interface(data->intf);
945 }
946
947 static int btusb_setup_bcm92035(struct hci_dev *hdev)
948 {
949 struct sk_buff *skb;
950 u8 val = 0x00;
951
952 BT_DBG("%s", hdev->name);
953
954 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
955 if (IS_ERR(skb))
956 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
957 else
958 kfree_skb(skb);
959
960 return 0;
961 }
962
963 struct intel_version {
964 u8 status;
965 u8 hw_platform;
966 u8 hw_variant;
967 u8 hw_revision;
968 u8 fw_variant;
969 u8 fw_revision;
970 u8 fw_build_num;
971 u8 fw_build_ww;
972 u8 fw_build_yy;
973 u8 fw_patch_num;
974 } __packed;
975
976 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
977 struct intel_version *ver)
978 {
979 const struct firmware *fw;
980 char fwname[64];
981 int ret;
982
983 snprintf(fwname, sizeof(fwname),
984 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
985 ver->hw_platform, ver->hw_variant, ver->hw_revision,
986 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
987 ver->fw_build_ww, ver->fw_build_yy);
988
989 ret = request_firmware(&fw, fwname, &hdev->dev);
990 if (ret < 0) {
991 if (ret == -EINVAL) {
992 BT_ERR("%s Intel firmware file request failed (%d)",
993 hdev->name, ret);
994 return NULL;
995 }
996
997 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
998 hdev->name, fwname, ret);
999
1000 /* If the correct firmware patch file is not found, use the
1001 * default firmware patch file instead
1002 */
1003 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1004 ver->hw_platform, ver->hw_variant);
1005 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1006 BT_ERR("%s failed to open default Intel fw file: %s",
1007 hdev->name, fwname);
1008 return NULL;
1009 }
1010 }
1011
1012 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1013
1014 return fw;
1015 }
1016
1017 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1018 const struct firmware *fw,
1019 const u8 **fw_ptr, int *disable_patch)
1020 {
1021 struct sk_buff *skb;
1022 struct hci_command_hdr *cmd;
1023 const u8 *cmd_param;
1024 struct hci_event_hdr *evt = NULL;
1025 const u8 *evt_param = NULL;
1026 int remain = fw->size - (*fw_ptr - fw->data);
1027
1028 /* The first byte indicates the types of the patch command or event.
1029 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1030 * in the current firmware buffer doesn't start with 0x01 or
1031 * the size of remain buffer is smaller than HCI command header,
1032 * the firmware file is corrupted and it should stop the patching
1033 * process.
1034 */
1035 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1036 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1037 return -EINVAL;
1038 }
1039 (*fw_ptr)++;
1040 remain--;
1041
1042 cmd = (struct hci_command_hdr *)(*fw_ptr);
1043 *fw_ptr += sizeof(*cmd);
1044 remain -= sizeof(*cmd);
1045
1046 /* Ensure that the remain firmware data is long enough than the length
1047 * of command parameter. If not, the firmware file is corrupted.
1048 */
1049 if (remain < cmd->plen) {
1050 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1051 return -EFAULT;
1052 }
1053
1054 /* If there is a command that loads a patch in the firmware
1055 * file, then enable the patch upon success, otherwise just
1056 * disable the manufacturer mode, for example patch activation
1057 * is not required when the default firmware patch file is used
1058 * because there are no patch data to load.
1059 */
1060 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1061 *disable_patch = 0;
1062
1063 cmd_param = *fw_ptr;
1064 *fw_ptr += cmd->plen;
1065 remain -= cmd->plen;
1066
1067 /* This reads the expected events when the above command is sent to the
1068 * device. Some vendor commands expects more than one events, for
1069 * example command status event followed by vendor specific event.
1070 * For this case, it only keeps the last expected event. so the command
1071 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1072 * last expected event.
1073 */
1074 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1075 (*fw_ptr)++;
1076 remain--;
1077
1078 evt = (struct hci_event_hdr *)(*fw_ptr);
1079 *fw_ptr += sizeof(*evt);
1080 remain -= sizeof(*evt);
1081
1082 if (remain < evt->plen) {
1083 BT_ERR("%s Intel fw corrupted: invalid evt len",
1084 hdev->name);
1085 return -EFAULT;
1086 }
1087
1088 evt_param = *fw_ptr;
1089 *fw_ptr += evt->plen;
1090 remain -= evt->plen;
1091 }
1092
1093 /* Every HCI commands in the firmware file has its correspond event.
1094 * If event is not found or remain is smaller than zero, the firmware
1095 * file is corrupted.
1096 */
1097 if (!evt || !evt_param || remain < 0) {
1098 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1099 return -EFAULT;
1100 }
1101
1102 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1103 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1104 if (IS_ERR(skb)) {
1105 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1106 hdev->name, cmd->opcode, PTR_ERR(skb));
1107 return PTR_ERR(skb);
1108 }
1109
1110 /* It ensures that the returned event matches the event data read from
1111 * the firmware file. At fist, it checks the length and then
1112 * the contents of the event.
1113 */
1114 if (skb->len != evt->plen) {
1115 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1116 le16_to_cpu(cmd->opcode));
1117 kfree_skb(skb);
1118 return -EFAULT;
1119 }
1120
1121 if (memcmp(skb->data, evt_param, evt->plen)) {
1122 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1123 hdev->name, le16_to_cpu(cmd->opcode));
1124 kfree_skb(skb);
1125 return -EFAULT;
1126 }
1127 kfree_skb(skb);
1128
1129 return 0;
1130 }
1131
1132 static int btusb_setup_intel(struct hci_dev *hdev)
1133 {
1134 struct sk_buff *skb;
1135 const struct firmware *fw;
1136 const u8 *fw_ptr;
1137 int disable_patch;
1138 struct intel_version *ver;
1139
1140 const u8 mfg_enable[] = { 0x01, 0x00 };
1141 const u8 mfg_disable[] = { 0x00, 0x00 };
1142 const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1143 const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1144
1145 BT_DBG("%s", hdev->name);
1146
1147 /* The controller has a bug with the first HCI command sent to it
1148 * returning number of completed commands as zero. This would stall the
1149 * command processing in the Bluetooth core.
1150 *
1151 * As a workaround, send HCI Reset command first which will reset the
1152 * number of completed commands and allow normal command processing
1153 * from now on.
1154 */
1155 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1156 if (IS_ERR(skb)) {
1157 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1158 hdev->name, PTR_ERR(skb));
1159 return PTR_ERR(skb);
1160 }
1161 kfree_skb(skb);
1162
1163 /* Read Intel specific controller version first to allow selection of
1164 * which firmware file to load.
1165 *
1166 * The returned information are hardware variant and revision plus
1167 * firmware variant, revision and build number.
1168 */
1169 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1170 if (IS_ERR(skb)) {
1171 BT_ERR("%s reading Intel fw version command failed (%ld)",
1172 hdev->name, PTR_ERR(skb));
1173 return PTR_ERR(skb);
1174 }
1175
1176 if (skb->len != sizeof(*ver)) {
1177 BT_ERR("%s Intel version event length mismatch", hdev->name);
1178 kfree_skb(skb);
1179 return -EIO;
1180 }
1181
1182 ver = (struct intel_version *)skb->data;
1183 if (ver->status) {
1184 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1185 ver->status);
1186 kfree_skb(skb);
1187 return -bt_to_errno(ver->status);
1188 }
1189
1190 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1191 hdev->name, ver->hw_platform, ver->hw_variant,
1192 ver->hw_revision, ver->fw_variant, ver->fw_revision,
1193 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1194 ver->fw_patch_num);
1195
1196 /* fw_patch_num indicates the version of patch the device currently
1197 * have. If there is no patch data in the device, it is always 0x00.
1198 * So, if it is other than 0x00, no need to patch the deivce again.
1199 */
1200 if (ver->fw_patch_num) {
1201 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1202 hdev->name, ver->fw_patch_num);
1203 kfree_skb(skb);
1204 return 0;
1205 }
1206
1207 /* Opens the firmware patch file based on the firmware version read
1208 * from the controller. If it fails to open the matching firmware
1209 * patch file, it tries to open the default firmware patch file.
1210 * If no patch file is found, allow the device to operate without
1211 * a patch.
1212 */
1213 fw = btusb_setup_intel_get_fw(hdev, ver);
1214 if (!fw) {
1215 kfree_skb(skb);
1216 return 0;
1217 }
1218 fw_ptr = fw->data;
1219
1220 /* This Intel specific command enables the manufacturer mode of the
1221 * controller.
1222 *
1223 * Only while this mode is enabled, the driver can download the
1224 * firmware patch data and configuration parameters.
1225 */
1226 skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1227 if (IS_ERR(skb)) {
1228 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1229 hdev->name, PTR_ERR(skb));
1230 release_firmware(fw);
1231 return PTR_ERR(skb);
1232 }
1233
1234 if (skb->data[0]) {
1235 u8 evt_status = skb->data[0];
1236 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1237 hdev->name, evt_status);
1238 kfree_skb(skb);
1239 release_firmware(fw);
1240 return -bt_to_errno(evt_status);
1241 }
1242 kfree_skb(skb);
1243
1244 disable_patch = 1;
1245
1246 /* The firmware data file consists of list of Intel specific HCI
1247 * commands and its expected events. The first byte indicates the
1248 * type of the message, either HCI command or HCI event.
1249 *
1250 * It reads the command and its expected event from the firmware file,
1251 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1252 * the returned event is compared with the event read from the firmware
1253 * file and it will continue until all the messages are downloaded to
1254 * the controller.
1255 *
1256 * Once the firmware patching is completed successfully,
1257 * the manufacturer mode is disabled with reset and activating the
1258 * downloaded patch.
1259 *
1260 * If the firmware patching fails, the manufacturer mode is
1261 * disabled with reset and deactivating the patch.
1262 *
1263 * If the default patch file is used, no reset is done when disabling
1264 * the manufacturer.
1265 */
1266 while (fw->size > fw_ptr - fw->data) {
1267 int ret;
1268
1269 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1270 &disable_patch);
1271 if (ret < 0)
1272 goto exit_mfg_deactivate;
1273 }
1274
1275 release_firmware(fw);
1276
1277 if (disable_patch)
1278 goto exit_mfg_disable;
1279
1280 /* Patching completed successfully and disable the manufacturer mode
1281 * with reset and activate the downloaded firmware patches.
1282 */
1283 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1284 mfg_reset_activate, HCI_INIT_TIMEOUT);
1285 if (IS_ERR(skb)) {
1286 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1287 hdev->name, PTR_ERR(skb));
1288 return PTR_ERR(skb);
1289 }
1290 kfree_skb(skb);
1291
1292 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1293 hdev->name);
1294
1295 return 0;
1296
1297 exit_mfg_disable:
1298 /* Disable the manufacturer mode without reset */
1299 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1300 HCI_INIT_TIMEOUT);
1301 if (IS_ERR(skb)) {
1302 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1303 hdev->name, PTR_ERR(skb));
1304 return PTR_ERR(skb);
1305 }
1306 kfree_skb(skb);
1307
1308 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1309 return 0;
1310
1311 exit_mfg_deactivate:
1312 release_firmware(fw);
1313
1314 /* Patching failed. Disable the manufacturer mode with reset and
1315 * deactivate the downloaded firmware patches.
1316 */
1317 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1318 mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1319 if (IS_ERR(skb)) {
1320 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1321 hdev->name, PTR_ERR(skb));
1322 return PTR_ERR(skb);
1323 }
1324 kfree_skb(skb);
1325
1326 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1327 hdev->name);
1328
1329 return 0;
1330 }
1331
1332 static int btusb_probe(struct usb_interface *intf,
1333 const struct usb_device_id *id)
1334 {
1335 struct usb_endpoint_descriptor *ep_desc;
1336 struct btusb_data *data;
1337 struct hci_dev *hdev;
1338 int i, err;
1339
1340 BT_DBG("intf %p id %p", intf, id);
1341
1342 /* interface numbers are hardcoded in the spec */
1343 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1344 return -ENODEV;
1345
1346 if (!id->driver_info) {
1347 const struct usb_device_id *match;
1348 match = usb_match_id(intf, blacklist_table);
1349 if (match)
1350 id = match;
1351 }
1352
1353 if (id->driver_info == BTUSB_IGNORE)
1354 return -ENODEV;
1355
1356 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1357 return -ENODEV;
1358
1359 if (ignore_csr && id->driver_info & BTUSB_CSR)
1360 return -ENODEV;
1361
1362 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1363 return -ENODEV;
1364
1365 if (id->driver_info & BTUSB_ATH3012) {
1366 struct usb_device *udev = interface_to_usbdev(intf);
1367
1368 /* Old firmware would otherwise let ath3k driver load
1369 * patch and sysconfig files */
1370 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1371 return -ENODEV;
1372 }
1373
1374 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1375 if (!data)
1376 return -ENOMEM;
1377
1378 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1379 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1380
1381 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1382 data->intr_ep = ep_desc;
1383 continue;
1384 }
1385
1386 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1387 data->bulk_tx_ep = ep_desc;
1388 continue;
1389 }
1390
1391 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1392 data->bulk_rx_ep = ep_desc;
1393 continue;
1394 }
1395 }
1396
1397 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1398 return -ENODEV;
1399
1400 data->cmdreq_type = USB_TYPE_CLASS;
1401
1402 data->udev = interface_to_usbdev(intf);
1403 data->intf = intf;
1404
1405 spin_lock_init(&data->lock);
1406
1407 INIT_WORK(&data->work, btusb_work);
1408 INIT_WORK(&data->waker, btusb_waker);
1409 spin_lock_init(&data->txlock);
1410
1411 init_usb_anchor(&data->tx_anchor);
1412 init_usb_anchor(&data->intr_anchor);
1413 init_usb_anchor(&data->bulk_anchor);
1414 init_usb_anchor(&data->isoc_anchor);
1415 init_usb_anchor(&data->deferred);
1416
1417 hdev = hci_alloc_dev();
1418 if (!hdev)
1419 return -ENOMEM;
1420
1421 hdev->bus = HCI_USB;
1422 hci_set_drvdata(hdev, data);
1423
1424 data->hdev = hdev;
1425
1426 SET_HCIDEV_DEV(hdev, &intf->dev);
1427
1428 hdev->open = btusb_open;
1429 hdev->close = btusb_close;
1430 hdev->flush = btusb_flush;
1431 hdev->send = btusb_send_frame;
1432 hdev->notify = btusb_notify;
1433
1434 if (id->driver_info & BTUSB_BCM92035)
1435 hdev->setup = btusb_setup_bcm92035;
1436
1437 if (id->driver_info & BTUSB_INTEL)
1438 hdev->setup = btusb_setup_intel;
1439
1440 /* Interface numbers are hardcoded in the specification */
1441 data->isoc = usb_ifnum_to_if(data->udev, 1);
1442
1443 if (!reset)
1444 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1445
1446 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1447 if (!disable_scofix)
1448 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1449 }
1450
1451 if (id->driver_info & BTUSB_BROKEN_ISOC)
1452 data->isoc = NULL;
1453
1454 if (id->driver_info & BTUSB_DIGIANSWER) {
1455 data->cmdreq_type = USB_TYPE_VENDOR;
1456 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1457 }
1458
1459 if (id->driver_info & BTUSB_CSR) {
1460 struct usb_device *udev = data->udev;
1461
1462 /* Old firmware would otherwise execute USB reset */
1463 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1464 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1465 }
1466
1467 if (id->driver_info & BTUSB_SNIFFER) {
1468 struct usb_device *udev = data->udev;
1469
1470 /* New sniffer firmware has crippled HCI interface */
1471 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1472 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1473
1474 data->isoc = NULL;
1475 }
1476
1477 if (data->isoc) {
1478 err = usb_driver_claim_interface(&btusb_driver,
1479 data->isoc, data);
1480 if (err < 0) {
1481 hci_free_dev(hdev);
1482 return err;
1483 }
1484 }
1485
1486 err = hci_register_dev(hdev);
1487 if (err < 0) {
1488 hci_free_dev(hdev);
1489 return err;
1490 }
1491
1492 usb_set_intfdata(intf, data);
1493
1494 return 0;
1495 }
1496
1497 static void btusb_disconnect(struct usb_interface *intf)
1498 {
1499 struct btusb_data *data = usb_get_intfdata(intf);
1500 struct hci_dev *hdev;
1501
1502 BT_DBG("intf %p", intf);
1503
1504 if (!data)
1505 return;
1506
1507 hdev = data->hdev;
1508 usb_set_intfdata(data->intf, NULL);
1509
1510 if (data->isoc)
1511 usb_set_intfdata(data->isoc, NULL);
1512
1513 hci_unregister_dev(hdev);
1514
1515 if (intf == data->isoc)
1516 usb_driver_release_interface(&btusb_driver, data->intf);
1517 else if (data->isoc)
1518 usb_driver_release_interface(&btusb_driver, data->isoc);
1519
1520 hci_free_dev(hdev);
1521 }
1522
1523 #ifdef CONFIG_PM
1524 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1525 {
1526 struct btusb_data *data = usb_get_intfdata(intf);
1527
1528 BT_DBG("intf %p", intf);
1529
1530 if (data->suspend_count++)
1531 return 0;
1532
1533 spin_lock_irq(&data->txlock);
1534 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1535 set_bit(BTUSB_SUSPENDING, &data->flags);
1536 spin_unlock_irq(&data->txlock);
1537 } else {
1538 spin_unlock_irq(&data->txlock);
1539 data->suspend_count--;
1540 return -EBUSY;
1541 }
1542
1543 cancel_work_sync(&data->work);
1544
1545 btusb_stop_traffic(data);
1546 usb_kill_anchored_urbs(&data->tx_anchor);
1547
1548 return 0;
1549 }
1550
1551 static void play_deferred(struct btusb_data *data)
1552 {
1553 struct urb *urb;
1554 int err;
1555
1556 while ((urb = usb_get_from_anchor(&data->deferred))) {
1557 err = usb_submit_urb(urb, GFP_ATOMIC);
1558 if (err < 0)
1559 break;
1560
1561 data->tx_in_flight++;
1562 }
1563 usb_scuttle_anchored_urbs(&data->deferred);
1564 }
1565
1566 static int btusb_resume(struct usb_interface *intf)
1567 {
1568 struct btusb_data *data = usb_get_intfdata(intf);
1569 struct hci_dev *hdev = data->hdev;
1570 int err = 0;
1571
1572 BT_DBG("intf %p", intf);
1573
1574 if (--data->suspend_count)
1575 return 0;
1576
1577 if (!test_bit(HCI_RUNNING, &hdev->flags))
1578 goto done;
1579
1580 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1581 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1582 if (err < 0) {
1583 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1584 goto failed;
1585 }
1586 }
1587
1588 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1589 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1590 if (err < 0) {
1591 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1592 goto failed;
1593 }
1594
1595 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1596 }
1597
1598 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1599 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1600 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1601 else
1602 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1603 }
1604
1605 spin_lock_irq(&data->txlock);
1606 play_deferred(data);
1607 clear_bit(BTUSB_SUSPENDING, &data->flags);
1608 spin_unlock_irq(&data->txlock);
1609 schedule_work(&data->work);
1610
1611 return 0;
1612
1613 failed:
1614 usb_scuttle_anchored_urbs(&data->deferred);
1615 done:
1616 spin_lock_irq(&data->txlock);
1617 clear_bit(BTUSB_SUSPENDING, &data->flags);
1618 spin_unlock_irq(&data->txlock);
1619
1620 return err;
1621 }
1622 #endif
1623
1624 static struct usb_driver btusb_driver = {
1625 .name = "btusb",
1626 .probe = btusb_probe,
1627 .disconnect = btusb_disconnect,
1628 #ifdef CONFIG_PM
1629 .suspend = btusb_suspend,
1630 .resume = btusb_resume,
1631 .reset_resume = btusb_resume,
1632 #endif
1633 .id_table = btusb_table,
1634 .supports_autosuspend = 1,
1635 .disable_hub_initiated_lpm = 1,
1636 };
1637
1638 module_usb_driver(btusb_driver);
1639
1640 module_param(ignore_dga, bool, 0644);
1641 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1642
1643 module_param(ignore_csr, bool, 0644);
1644 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1645
1646 module_param(ignore_sniffer, bool, 0644);
1647 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1648
1649 module_param(disable_scofix, bool, 0644);
1650 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1651
1652 module_param(force_scofix, bool, 0644);
1653 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1654
1655 module_param(reset, bool, 0644);
1656 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1657
1658 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1659 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1660 MODULE_VERSION(VERSION);
1661 MODULE_LICENSE("GPL");
Linus' kernel tree