projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge tag 'stable/for-linus-3.19-rc0b-tag' of git://git.kernel.org/pub/scm/linux...
[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 disable_scofix;
34 static bool force_scofix;
35
36 static bool reset = 1;
37
38 static struct usb_driver btusb_driver;
39
40 #define BTUSB_IGNORE 0x01
41 #define BTUSB_DIGIANSWER 0x02
42 #define BTUSB_CSR 0x04
43 #define BTUSB_SNIFFER 0x08
44 #define BTUSB_BCM92035 0x10
45 #define BTUSB_BROKEN_ISOC 0x20
46 #define BTUSB_WRONG_SCO_MTU 0x40
47 #define BTUSB_ATH3012 0x80
48 #define BTUSB_INTEL 0x100
49 #define BTUSB_INTEL_BOOT 0x200
50 #define BTUSB_BCM_PATCHRAM 0x400
51 #define BTUSB_MARVELL 0x800
52
53 static const 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(0x0489, 0xe042) },
105 { USB_DEVICE(0x04ca, 0x2003) },
106 { USB_DEVICE(0x0b05, 0x17b5) },
107 { USB_DEVICE(0x0b05, 0x17cb) },
108 { USB_DEVICE(0x413c, 0x8197) },
109 { USB_DEVICE(0x13d3, 0x3404),
110 .driver_info = BTUSB_BCM_PATCHRAM },
111
112 /* Foxconn - Hon Hai */
113 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
114 .driver_info = BTUSB_BCM_PATCHRAM },
115
116 /* Broadcom devices with vendor specific id */
117 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
118 .driver_info = BTUSB_BCM_PATCHRAM },
119
120 /* ASUSTek Computer - Broadcom based */
121 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
122
123 /* Belkin F8065bf - Broadcom based */
124 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
125
126 /* IMC Networks - Broadcom based */
127 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
128
129 /* Intel Bluetooth USB Bootloader (RAM module) */
130 { USB_DEVICE(0x8087, 0x0a5a),
131 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
132
133 { } /* Terminating entry */
134 };
135
136 MODULE_DEVICE_TABLE(usb, btusb_table);
137
138 static const struct usb_device_id blacklist_table[] = {
139 /* CSR BlueCore devices */
140 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
141
142 /* Broadcom BCM2033 without firmware */
143 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
144
145 /* Atheros 3011 with sflash firmware */
146 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
147 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
148 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
149 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
150 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
151 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
152
153 /* Atheros AR9285 Malbec with sflash firmware */
154 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
155
156 /* Atheros 3012 with sflash firmware */
157 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
158 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
159 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
160 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
161 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
162 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
163 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
164 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
165 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
166 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
167 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
168 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
169 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
170 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
171 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
172 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
173 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
174 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
175 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
176 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
177 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
178 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
179 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
180 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
181 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
182 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
183 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
184 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
185 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
186 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
187 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
188 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
189 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
190 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
191
192 /* Atheros AR5BBU12 with sflash firmware */
193 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
194
195 /* Atheros AR5BBU12 with sflash firmware */
196 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
197 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
198
199 /* Broadcom BCM2035 */
200 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
201 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
202 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
203
204 /* Broadcom BCM2045 */
205 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
206 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
207
208 /* IBM/Lenovo ThinkPad with Broadcom chip */
209 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
210 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
211
212 /* HP laptop with Broadcom chip */
213 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
214
215 /* Dell laptop with Broadcom chip */
216 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
217
218 /* Dell Wireless 370 and 410 devices */
219 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
220 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
221
222 /* Belkin F8T012 and F8T013 devices */
223 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
224 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
225
226 /* Asus WL-BTD202 device */
227 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
228
229 /* Kensington Bluetooth USB adapter */
230 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
231
232 /* RTX Telecom based adapters with buggy SCO support */
233 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
234 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
235
236 /* CONWISE Technology based adapters with buggy SCO support */
237 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
238
239 /* Digianswer devices */
240 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
241 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
242
243 /* CSR BlueCore Bluetooth Sniffer */
244 { USB_DEVICE(0x0a12, 0x0002),
245 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
246
247 /* Frontline ComProbe Bluetooth Sniffer */
248 { USB_DEVICE(0x16d3, 0x0002),
249 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
250
251 /* Intel Bluetooth device */
252 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
253 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
254
255 /* Marvell device */
256 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
257 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
258
259 { } /* Terminating entry */
260 };
261
262 #define BTUSB_MAX_ISOC_FRAMES 10
263
264 #define BTUSB_INTR_RUNNING 0
265 #define BTUSB_BULK_RUNNING 1
266 #define BTUSB_ISOC_RUNNING 2
267 #define BTUSB_SUSPENDING 3
268 #define BTUSB_DID_ISO_RESUME 4
269
270 struct btusb_data {
271 struct hci_dev *hdev;
272 struct usb_device *udev;
273 struct usb_interface *intf;
274 struct usb_interface *isoc;
275
276 unsigned long flags;
277
278 struct work_struct work;
279 struct work_struct waker;
280
281 struct usb_anchor deferred;
282 struct usb_anchor tx_anchor;
283 int tx_in_flight;
284 spinlock_t txlock;
285
286 struct usb_anchor intr_anchor;
287 struct usb_anchor bulk_anchor;
288 struct usb_anchor isoc_anchor;
289 spinlock_t rxlock;
290
291 struct sk_buff *evt_skb;
292 struct sk_buff *acl_skb;
293 struct sk_buff *sco_skb;
294
295 struct usb_endpoint_descriptor *intr_ep;
296 struct usb_endpoint_descriptor *bulk_tx_ep;
297 struct usb_endpoint_descriptor *bulk_rx_ep;
298 struct usb_endpoint_descriptor *isoc_tx_ep;
299 struct usb_endpoint_descriptor *isoc_rx_ep;
300
301 __u8 cmdreq_type;
302
303 unsigned int sco_num;
304 int isoc_altsetting;
305 int suspend_count;
306
307 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
308 };
309
310 static inline void btusb_free_frags(struct btusb_data *data)
311 {
312 unsigned long flags;
313
314 spin_lock_irqsave(&data->rxlock, flags);
315
316 kfree_skb(data->evt_skb);
317 data->evt_skb = NULL;
318
319 kfree_skb(data->acl_skb);
320 data->acl_skb = NULL;
321
322 kfree_skb(data->sco_skb);
323 data->sco_skb = NULL;
324
325 spin_unlock_irqrestore(&data->rxlock, flags);
326 }
327
328 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
329 {
330 struct sk_buff *skb;
331 int err = 0;
332
333 spin_lock(&data->rxlock);
334 skb = data->evt_skb;
335
336 while (count) {
337 int len;
338
339 if (!skb) {
340 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
341 if (!skb) {
342 err = -ENOMEM;
343 break;
344 }
345
346 bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
347 bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
348 }
349
350 len = min_t(uint, bt_cb(skb)->expect, count);
351 memcpy(skb_put(skb, len), buffer, len);
352
353 count -= len;
354 buffer += len;
355 bt_cb(skb)->expect -= len;
356
357 if (skb->len == HCI_EVENT_HDR_SIZE) {
358 /* Complete event header */
359 bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
360
361 if (skb_tailroom(skb) < bt_cb(skb)->expect) {
362 kfree_skb(skb);
363 skb = NULL;
364
365 err = -EILSEQ;
366 break;
367 }
368 }
369
370 if (bt_cb(skb)->expect == 0) {
371 /* Complete frame */
372 hci_recv_frame(data->hdev, skb);
373 skb = NULL;
374 }
375 }
376
377 data->evt_skb = skb;
378 spin_unlock(&data->rxlock);
379
380 return err;
381 }
382
383 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
384 {
385 struct sk_buff *skb;
386 int err = 0;
387
388 spin_lock(&data->rxlock);
389 skb = data->acl_skb;
390
391 while (count) {
392 int len;
393
394 if (!skb) {
395 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
396 if (!skb) {
397 err = -ENOMEM;
398 break;
399 }
400
401 bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
402 bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
403 }
404
405 len = min_t(uint, bt_cb(skb)->expect, count);
406 memcpy(skb_put(skb, len), buffer, len);
407
408 count -= len;
409 buffer += len;
410 bt_cb(skb)->expect -= len;
411
412 if (skb->len == HCI_ACL_HDR_SIZE) {
413 __le16 dlen = hci_acl_hdr(skb)->dlen;
414
415 /* Complete ACL header */
416 bt_cb(skb)->expect = __le16_to_cpu(dlen);
417
418 if (skb_tailroom(skb) < bt_cb(skb)->expect) {
419 kfree_skb(skb);
420 skb = NULL;
421
422 err = -EILSEQ;
423 break;
424 }
425 }
426
427 if (bt_cb(skb)->expect == 0) {
428 /* Complete frame */
429 hci_recv_frame(data->hdev, skb);
430 skb = NULL;
431 }
432 }
433
434 data->acl_skb = skb;
435 spin_unlock(&data->rxlock);
436
437 return err;
438 }
439
440 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
441 {
442 struct sk_buff *skb;
443 int err = 0;
444
445 spin_lock(&data->rxlock);
446 skb = data->sco_skb;
447
448 while (count) {
449 int len;
450
451 if (!skb) {
452 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
453 if (!skb) {
454 err = -ENOMEM;
455 break;
456 }
457
458 bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
459 bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
460 }
461
462 len = min_t(uint, bt_cb(skb)->expect, count);
463 memcpy(skb_put(skb, len), buffer, len);
464
465 count -= len;
466 buffer += len;
467 bt_cb(skb)->expect -= len;
468
469 if (skb->len == HCI_SCO_HDR_SIZE) {
470 /* Complete SCO header */
471 bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
472
473 if (skb_tailroom(skb) < bt_cb(skb)->expect) {
474 kfree_skb(skb);
475 skb = NULL;
476
477 err = -EILSEQ;
478 break;
479 }
480 }
481
482 if (bt_cb(skb)->expect == 0) {
483 /* Complete frame */
484 hci_recv_frame(data->hdev, skb);
485 skb = NULL;
486 }
487 }
488
489 data->sco_skb = skb;
490 spin_unlock(&data->rxlock);
491
492 return err;
493 }
494
495 static void btusb_intr_complete(struct urb *urb)
496 {
497 struct hci_dev *hdev = urb->context;
498 struct btusb_data *data = hci_get_drvdata(hdev);
499 int err;
500
501 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
502 urb->actual_length);
503
504 if (!test_bit(HCI_RUNNING, &hdev->flags))
505 return;
506
507 if (urb->status == 0) {
508 hdev->stat.byte_rx += urb->actual_length;
509
510 if (btusb_recv_intr(data, urb->transfer_buffer,
511 urb->actual_length) < 0) {
512 BT_ERR("%s corrupted event packet", hdev->name);
513 hdev->stat.err_rx++;
514 }
515 } else if (urb->status == -ENOENT) {
516 /* Avoid suspend failed when usb_kill_urb */
517 return;
518 }
519
520 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
521 return;
522
523 usb_mark_last_busy(data->udev);
524 usb_anchor_urb(urb, &data->intr_anchor);
525
526 err = usb_submit_urb(urb, GFP_ATOMIC);
527 if (err < 0) {
528 /* -EPERM: urb is being killed;
529 * -ENODEV: device got disconnected */
530 if (err != -EPERM && err != -ENODEV)
531 BT_ERR("%s urb %p failed to resubmit (%d)",
532 hdev->name, urb, -err);
533 usb_unanchor_urb(urb);
534 }
535 }
536
537 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
538 {
539 struct btusb_data *data = hci_get_drvdata(hdev);
540 struct urb *urb;
541 unsigned char *buf;
542 unsigned int pipe;
543 int err, size;
544
545 BT_DBG("%s", hdev->name);
546
547 if (!data->intr_ep)
548 return -ENODEV;
549
550 urb = usb_alloc_urb(0, mem_flags);
551 if (!urb)
552 return -ENOMEM;
553
554 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
555
556 buf = kmalloc(size, mem_flags);
557 if (!buf) {
558 usb_free_urb(urb);
559 return -ENOMEM;
560 }
561
562 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
563
564 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
565 btusb_intr_complete, hdev, data->intr_ep->bInterval);
566
567 urb->transfer_flags |= URB_FREE_BUFFER;
568
569 usb_anchor_urb(urb, &data->intr_anchor);
570
571 err = usb_submit_urb(urb, mem_flags);
572 if (err < 0) {
573 if (err != -EPERM && err != -ENODEV)
574 BT_ERR("%s urb %p submission failed (%d)",
575 hdev->name, urb, -err);
576 usb_unanchor_urb(urb);
577 }
578
579 usb_free_urb(urb);
580
581 return err;
582 }
583
584 static void btusb_bulk_complete(struct urb *urb)
585 {
586 struct hci_dev *hdev = urb->context;
587 struct btusb_data *data = hci_get_drvdata(hdev);
588 int err;
589
590 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
591 urb->actual_length);
592
593 if (!test_bit(HCI_RUNNING, &hdev->flags))
594 return;
595
596 if (urb->status == 0) {
597 hdev->stat.byte_rx += urb->actual_length;
598
599 if (data->recv_bulk(data, urb->transfer_buffer,
600 urb->actual_length) < 0) {
601 BT_ERR("%s corrupted ACL packet", hdev->name);
602 hdev->stat.err_rx++;
603 }
604 } else if (urb->status == -ENOENT) {
605 /* Avoid suspend failed when usb_kill_urb */
606 return;
607 }
608
609 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
610 return;
611
612 usb_anchor_urb(urb, &data->bulk_anchor);
613 usb_mark_last_busy(data->udev);
614
615 err = usb_submit_urb(urb, GFP_ATOMIC);
616 if (err < 0) {
617 /* -EPERM: urb is being killed;
618 * -ENODEV: device got disconnected */
619 if (err != -EPERM && err != -ENODEV)
620 BT_ERR("%s urb %p failed to resubmit (%d)",
621 hdev->name, urb, -err);
622 usb_unanchor_urb(urb);
623 }
624 }
625
626 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
627 {
628 struct btusb_data *data = hci_get_drvdata(hdev);
629 struct urb *urb;
630 unsigned char *buf;
631 unsigned int pipe;
632 int err, size = HCI_MAX_FRAME_SIZE;
633
634 BT_DBG("%s", hdev->name);
635
636 if (!data->bulk_rx_ep)
637 return -ENODEV;
638
639 urb = usb_alloc_urb(0, mem_flags);
640 if (!urb)
641 return -ENOMEM;
642
643 buf = kmalloc(size, mem_flags);
644 if (!buf) {
645 usb_free_urb(urb);
646 return -ENOMEM;
647 }
648
649 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
650
651 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
652 btusb_bulk_complete, hdev);
653
654 urb->transfer_flags |= URB_FREE_BUFFER;
655
656 usb_mark_last_busy(data->udev);
657 usb_anchor_urb(urb, &data->bulk_anchor);
658
659 err = usb_submit_urb(urb, mem_flags);
660 if (err < 0) {
661 if (err != -EPERM && err != -ENODEV)
662 BT_ERR("%s urb %p submission failed (%d)",
663 hdev->name, urb, -err);
664 usb_unanchor_urb(urb);
665 }
666
667 usb_free_urb(urb);
668
669 return err;
670 }
671
672 static void btusb_isoc_complete(struct urb *urb)
673 {
674 struct hci_dev *hdev = urb->context;
675 struct btusb_data *data = hci_get_drvdata(hdev);
676 int i, err;
677
678 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
679 urb->actual_length);
680
681 if (!test_bit(HCI_RUNNING, &hdev->flags))
682 return;
683
684 if (urb->status == 0) {
685 for (i = 0; i < urb->number_of_packets; i++) {
686 unsigned int offset = urb->iso_frame_desc[i].offset;
687 unsigned int length = urb->iso_frame_desc[i].actual_length;
688
689 if (urb->iso_frame_desc[i].status)
690 continue;
691
692 hdev->stat.byte_rx += length;
693
694 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
695 length) < 0) {
696 BT_ERR("%s corrupted SCO packet", hdev->name);
697 hdev->stat.err_rx++;
698 }
699 }
700 } else if (urb->status == -ENOENT) {
701 /* Avoid suspend failed when usb_kill_urb */
702 return;
703 }
704
705 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
706 return;
707
708 usb_anchor_urb(urb, &data->isoc_anchor);
709
710 err = usb_submit_urb(urb, GFP_ATOMIC);
711 if (err < 0) {
712 /* -EPERM: urb is being killed;
713 * -ENODEV: device got disconnected */
714 if (err != -EPERM && err != -ENODEV)
715 BT_ERR("%s urb %p failed to resubmit (%d)",
716 hdev->name, urb, -err);
717 usb_unanchor_urb(urb);
718 }
719 }
720
721 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
722 {
723 int i, offset = 0;
724
725 BT_DBG("len %d mtu %d", len, mtu);
726
727 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
728 i++, offset += mtu, len -= mtu) {
729 urb->iso_frame_desc[i].offset = offset;
730 urb->iso_frame_desc[i].length = mtu;
731 }
732
733 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
734 urb->iso_frame_desc[i].offset = offset;
735 urb->iso_frame_desc[i].length = len;
736 i++;
737 }
738
739 urb->number_of_packets = i;
740 }
741
742 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
743 {
744 struct btusb_data *data = hci_get_drvdata(hdev);
745 struct urb *urb;
746 unsigned char *buf;
747 unsigned int pipe;
748 int err, size;
749
750 BT_DBG("%s", hdev->name);
751
752 if (!data->isoc_rx_ep)
753 return -ENODEV;
754
755 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
756 if (!urb)
757 return -ENOMEM;
758
759 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
760 BTUSB_MAX_ISOC_FRAMES;
761
762 buf = kmalloc(size, mem_flags);
763 if (!buf) {
764 usb_free_urb(urb);
765 return -ENOMEM;
766 }
767
768 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
769
770 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
771 hdev, data->isoc_rx_ep->bInterval);
772
773 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
774
775 __fill_isoc_descriptor(urb, size,
776 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
777
778 usb_anchor_urb(urb, &data->isoc_anchor);
779
780 err = usb_submit_urb(urb, mem_flags);
781 if (err < 0) {
782 if (err != -EPERM && err != -ENODEV)
783 BT_ERR("%s urb %p submission failed (%d)",
784 hdev->name, urb, -err);
785 usb_unanchor_urb(urb);
786 }
787
788 usb_free_urb(urb);
789
790 return err;
791 }
792
793 static void btusb_tx_complete(struct urb *urb)
794 {
795 struct sk_buff *skb = urb->context;
796 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
797 struct btusb_data *data = hci_get_drvdata(hdev);
798
799 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
800 urb->actual_length);
801
802 if (!test_bit(HCI_RUNNING, &hdev->flags))
803 goto done;
804
805 if (!urb->status)
806 hdev->stat.byte_tx += urb->transfer_buffer_length;
807 else
808 hdev->stat.err_tx++;
809
810 done:
811 spin_lock(&data->txlock);
812 data->tx_in_flight--;
813 spin_unlock(&data->txlock);
814
815 kfree(urb->setup_packet);
816
817 kfree_skb(skb);
818 }
819
820 static void btusb_isoc_tx_complete(struct urb *urb)
821 {
822 struct sk_buff *skb = urb->context;
823 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
824
825 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
826 urb->actual_length);
827
828 if (!test_bit(HCI_RUNNING, &hdev->flags))
829 goto done;
830
831 if (!urb->status)
832 hdev->stat.byte_tx += urb->transfer_buffer_length;
833 else
834 hdev->stat.err_tx++;
835
836 done:
837 kfree(urb->setup_packet);
838
839 kfree_skb(skb);
840 }
841
842 static int btusb_open(struct hci_dev *hdev)
843 {
844 struct btusb_data *data = hci_get_drvdata(hdev);
845 int err;
846
847 BT_DBG("%s", hdev->name);
848
849 err = usb_autopm_get_interface(data->intf);
850 if (err < 0)
851 return err;
852
853 data->intf->needs_remote_wakeup = 1;
854
855 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
856 goto done;
857
858 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
859 goto done;
860
861 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
862 if (err < 0)
863 goto failed;
864
865 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
866 if (err < 0) {
867 usb_kill_anchored_urbs(&data->intr_anchor);
868 goto failed;
869 }
870
871 set_bit(BTUSB_BULK_RUNNING, &data->flags);
872 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
873
874 done:
875 usb_autopm_put_interface(data->intf);
876 return 0;
877
878 failed:
879 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
880 clear_bit(HCI_RUNNING, &hdev->flags);
881 usb_autopm_put_interface(data->intf);
882 return err;
883 }
884
885 static void btusb_stop_traffic(struct btusb_data *data)
886 {
887 usb_kill_anchored_urbs(&data->intr_anchor);
888 usb_kill_anchored_urbs(&data->bulk_anchor);
889 usb_kill_anchored_urbs(&data->isoc_anchor);
890 }
891
892 static int btusb_close(struct hci_dev *hdev)
893 {
894 struct btusb_data *data = hci_get_drvdata(hdev);
895 int err;
896
897 BT_DBG("%s", hdev->name);
898
899 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
900 return 0;
901
902 cancel_work_sync(&data->work);
903 cancel_work_sync(&data->waker);
904
905 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
906 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
907 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
908
909 btusb_stop_traffic(data);
910 btusb_free_frags(data);
911
912 err = usb_autopm_get_interface(data->intf);
913 if (err < 0)
914 goto failed;
915
916 data->intf->needs_remote_wakeup = 0;
917 usb_autopm_put_interface(data->intf);
918
919 failed:
920 usb_scuttle_anchored_urbs(&data->deferred);
921 return 0;
922 }
923
924 static int btusb_flush(struct hci_dev *hdev)
925 {
926 struct btusb_data *data = hci_get_drvdata(hdev);
927
928 BT_DBG("%s", hdev->name);
929
930 usb_kill_anchored_urbs(&data->tx_anchor);
931 btusb_free_frags(data);
932
933 return 0;
934 }
935
936 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
937 {
938 struct btusb_data *data = hci_get_drvdata(hdev);
939 struct usb_ctrlrequest *dr;
940 struct urb *urb;
941 unsigned int pipe;
942
943 urb = usb_alloc_urb(0, GFP_KERNEL);
944 if (!urb)
945 return ERR_PTR(-ENOMEM);
946
947 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
948 if (!dr) {
949 usb_free_urb(urb);
950 return ERR_PTR(-ENOMEM);
951 }
952
953 dr->bRequestType = data->cmdreq_type;
954 dr->bRequest = 0;
955 dr->wIndex = 0;
956 dr->wValue = 0;
957 dr->wLength = __cpu_to_le16(skb->len);
958
959 pipe = usb_sndctrlpipe(data->udev, 0x00);
960
961 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
962 skb->data, skb->len, btusb_tx_complete, skb);
963
964 skb->dev = (void *)hdev;
965
966 return urb;
967 }
968
969 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
970 {
971 struct btusb_data *data = hci_get_drvdata(hdev);
972 struct urb *urb;
973 unsigned int pipe;
974
975 if (!data->bulk_tx_ep)
976 return ERR_PTR(-ENODEV);
977
978 urb = usb_alloc_urb(0, GFP_KERNEL);
979 if (!urb)
980 return ERR_PTR(-ENOMEM);
981
982 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
983
984 usb_fill_bulk_urb(urb, data->udev, pipe,
985 skb->data, skb->len, btusb_tx_complete, skb);
986
987 skb->dev = (void *)hdev;
988
989 return urb;
990 }
991
992 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
993 {
994 struct btusb_data *data = hci_get_drvdata(hdev);
995 struct urb *urb;
996 unsigned int pipe;
997
998 if (!data->isoc_tx_ep)
999 return ERR_PTR(-ENODEV);
1000
1001 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1002 if (!urb)
1003 return ERR_PTR(-ENOMEM);
1004
1005 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1006
1007 usb_fill_int_urb(urb, data->udev, pipe,
1008 skb->data, skb->len, btusb_isoc_tx_complete,
1009 skb, data->isoc_tx_ep->bInterval);
1010
1011 urb->transfer_flags = URB_ISO_ASAP;
1012
1013 __fill_isoc_descriptor(urb, skb->len,
1014 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1015
1016 skb->dev = (void *)hdev;
1017
1018 return urb;
1019 }
1020
1021 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1022 {
1023 struct btusb_data *data = hci_get_drvdata(hdev);
1024 int err;
1025
1026 usb_anchor_urb(urb, &data->tx_anchor);
1027
1028 err = usb_submit_urb(urb, GFP_KERNEL);
1029 if (err < 0) {
1030 if (err != -EPERM && err != -ENODEV)
1031 BT_ERR("%s urb %p submission failed (%d)",
1032 hdev->name, urb, -err);
1033 kfree(urb->setup_packet);
1034 usb_unanchor_urb(urb);
1035 } else {
1036 usb_mark_last_busy(data->udev);
1037 }
1038
1039 usb_free_urb(urb);
1040 return err;
1041 }
1042
1043 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1044 {
1045 struct btusb_data *data = hci_get_drvdata(hdev);
1046 unsigned long flags;
1047 bool suspending;
1048
1049 spin_lock_irqsave(&data->txlock, flags);
1050 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1051 if (!suspending)
1052 data->tx_in_flight++;
1053 spin_unlock_irqrestore(&data->txlock, flags);
1054
1055 if (!suspending)
1056 return submit_tx_urb(hdev, urb);
1057
1058 usb_anchor_urb(urb, &data->deferred);
1059 schedule_work(&data->waker);
1060
1061 usb_free_urb(urb);
1062 return 0;
1063 }
1064
1065 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1066 {
1067 struct urb *urb;
1068
1069 BT_DBG("%s", hdev->name);
1070
1071 if (!test_bit(HCI_RUNNING, &hdev->flags))
1072 return -EBUSY;
1073
1074 switch (bt_cb(skb)->pkt_type) {
1075 case HCI_COMMAND_PKT:
1076 urb = alloc_ctrl_urb(hdev, skb);
1077 if (IS_ERR(urb))
1078 return PTR_ERR(urb);
1079
1080 hdev->stat.cmd_tx++;
1081 return submit_or_queue_tx_urb(hdev, urb);
1082
1083 case HCI_ACLDATA_PKT:
1084 urb = alloc_bulk_urb(hdev, skb);
1085 if (IS_ERR(urb))
1086 return PTR_ERR(urb);
1087
1088 hdev->stat.acl_tx++;
1089 return submit_or_queue_tx_urb(hdev, urb);
1090
1091 case HCI_SCODATA_PKT:
1092 if (hci_conn_num(hdev, SCO_LINK) < 1)
1093 return -ENODEV;
1094
1095 urb = alloc_isoc_urb(hdev, skb);
1096 if (IS_ERR(urb))
1097 return PTR_ERR(urb);
1098
1099 hdev->stat.sco_tx++;
1100 return submit_tx_urb(hdev, urb);
1101 }
1102
1103 return -EILSEQ;
1104 }
1105
1106 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1107 {
1108 struct btusb_data *data = hci_get_drvdata(hdev);
1109
1110 BT_DBG("%s evt %d", hdev->name, evt);
1111
1112 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1113 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1114 schedule_work(&data->work);
1115 }
1116 }
1117
1118 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1119 {
1120 struct btusb_data *data = hci_get_drvdata(hdev);
1121 struct usb_interface *intf = data->isoc;
1122 struct usb_endpoint_descriptor *ep_desc;
1123 int i, err;
1124
1125 if (!data->isoc)
1126 return -ENODEV;
1127
1128 err = usb_set_interface(data->udev, 1, altsetting);
1129 if (err < 0) {
1130 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1131 return err;
1132 }
1133
1134 data->isoc_altsetting = altsetting;
1135
1136 data->isoc_tx_ep = NULL;
1137 data->isoc_rx_ep = NULL;
1138
1139 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1140 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1141
1142 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1143 data->isoc_tx_ep = ep_desc;
1144 continue;
1145 }
1146
1147 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1148 data->isoc_rx_ep = ep_desc;
1149 continue;
1150 }
1151 }
1152
1153 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1154 BT_ERR("%s invalid SCO descriptors", hdev->name);
1155 return -ENODEV;
1156 }
1157
1158 return 0;
1159 }
1160
1161 static void btusb_work(struct work_struct *work)
1162 {
1163 struct btusb_data *data = container_of(work, struct btusb_data, work);
1164 struct hci_dev *hdev = data->hdev;
1165 int new_alts;
1166 int err;
1167
1168 if (data->sco_num > 0) {
1169 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1170 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1171 if (err < 0) {
1172 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1173 usb_kill_anchored_urbs(&data->isoc_anchor);
1174 return;
1175 }
1176
1177 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1178 }
1179
1180 if (hdev->voice_setting & 0x0020) {
1181 static const int alts[3] = { 2, 4, 5 };
1182
1183 new_alts = alts[data->sco_num - 1];
1184 } else {
1185 new_alts = data->sco_num;
1186 }
1187
1188 if (data->isoc_altsetting != new_alts) {
1189 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1190 usb_kill_anchored_urbs(&data->isoc_anchor);
1191
1192 if (__set_isoc_interface(hdev, new_alts) < 0)
1193 return;
1194 }
1195
1196 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1197 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1198 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1199 else
1200 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1201 }
1202 } else {
1203 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1204 usb_kill_anchored_urbs(&data->isoc_anchor);
1205
1206 __set_isoc_interface(hdev, 0);
1207 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1208 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1209 }
1210 }
1211
1212 static void btusb_waker(struct work_struct *work)
1213 {
1214 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1215 int err;
1216
1217 err = usb_autopm_get_interface(data->intf);
1218 if (err < 0)
1219 return;
1220
1221 usb_autopm_put_interface(data->intf);
1222 }
1223
1224 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1225 {
1226 struct sk_buff *skb;
1227 u8 val = 0x00;
1228
1229 BT_DBG("%s", hdev->name);
1230
1231 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1232 if (IS_ERR(skb))
1233 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1234 else
1235 kfree_skb(skb);
1236
1237 return 0;
1238 }
1239
1240 static int btusb_setup_csr(struct hci_dev *hdev)
1241 {
1242 struct hci_rp_read_local_version *rp;
1243 struct sk_buff *skb;
1244 int ret;
1245
1246 BT_DBG("%s", hdev->name);
1247
1248 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1249 HCI_INIT_TIMEOUT);
1250 if (IS_ERR(skb)) {
1251 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
1252 return -PTR_ERR(skb);
1253 }
1254
1255 rp = (struct hci_rp_read_local_version *)skb->data;
1256
1257 if (!rp->status) {
1258 if (le16_to_cpu(rp->manufacturer) != 10) {
1259 /* Clear the reset quirk since this is not an actual
1260 * early Bluetooth 1.1 device from CSR.
1261 */
1262 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1263
1264 /* These fake CSR controllers have all a broken
1265 * stored link key handling and so just disable it.
1266 */
1267 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1268 &hdev->quirks);
1269 }
1270 }
1271
1272 ret = -bt_to_errno(rp->status);
1273
1274 kfree_skb(skb);
1275
1276 return ret;
1277 }
1278
1279 struct intel_version {
1280 u8 status;
1281 u8 hw_platform;
1282 u8 hw_variant;
1283 u8 hw_revision;
1284 u8 fw_variant;
1285 u8 fw_revision;
1286 u8 fw_build_num;
1287 u8 fw_build_ww;
1288 u8 fw_build_yy;
1289 u8 fw_patch_num;
1290 } __packed;
1291
1292 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1293 struct intel_version *ver)
1294 {
1295 const struct firmware *fw;
1296 char fwname[64];
1297 int ret;
1298
1299 snprintf(fwname, sizeof(fwname),
1300 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1301 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1302 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1303 ver->fw_build_ww, ver->fw_build_yy);
1304
1305 ret = request_firmware(&fw, fwname, &hdev->dev);
1306 if (ret < 0) {
1307 if (ret == -EINVAL) {
1308 BT_ERR("%s Intel firmware file request failed (%d)",
1309 hdev->name, ret);
1310 return NULL;
1311 }
1312
1313 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1314 hdev->name, fwname, ret);
1315
1316 /* If the correct firmware patch file is not found, use the
1317 * default firmware patch file instead
1318 */
1319 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1320 ver->hw_platform, ver->hw_variant);
1321 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1322 BT_ERR("%s failed to open default Intel fw file: %s",
1323 hdev->name, fwname);
1324 return NULL;
1325 }
1326 }
1327
1328 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1329
1330 return fw;
1331 }
1332
1333 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1334 const struct firmware *fw,
1335 const u8 **fw_ptr, int *disable_patch)
1336 {
1337 struct sk_buff *skb;
1338 struct hci_command_hdr *cmd;
1339 const u8 *cmd_param;
1340 struct hci_event_hdr *evt = NULL;
1341 const u8 *evt_param = NULL;
1342 int remain = fw->size - (*fw_ptr - fw->data);
1343
1344 /* The first byte indicates the types of the patch command or event.
1345 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1346 * in the current firmware buffer doesn't start with 0x01 or
1347 * the size of remain buffer is smaller than HCI command header,
1348 * the firmware file is corrupted and it should stop the patching
1349 * process.
1350 */
1351 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1352 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1353 return -EINVAL;
1354 }
1355 (*fw_ptr)++;
1356 remain--;
1357
1358 cmd = (struct hci_command_hdr *)(*fw_ptr);
1359 *fw_ptr += sizeof(*cmd);
1360 remain -= sizeof(*cmd);
1361
1362 /* Ensure that the remain firmware data is long enough than the length
1363 * of command parameter. If not, the firmware file is corrupted.
1364 */
1365 if (remain < cmd->plen) {
1366 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1367 return -EFAULT;
1368 }
1369
1370 /* If there is a command that loads a patch in the firmware
1371 * file, then enable the patch upon success, otherwise just
1372 * disable the manufacturer mode, for example patch activation
1373 * is not required when the default firmware patch file is used
1374 * because there are no patch data to load.
1375 */
1376 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1377 *disable_patch = 0;
1378
1379 cmd_param = *fw_ptr;
1380 *fw_ptr += cmd->plen;
1381 remain -= cmd->plen;
1382
1383 /* This reads the expected events when the above command is sent to the
1384 * device. Some vendor commands expects more than one events, for
1385 * example command status event followed by vendor specific event.
1386 * For this case, it only keeps the last expected event. so the command
1387 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1388 * last expected event.
1389 */
1390 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1391 (*fw_ptr)++;
1392 remain--;
1393
1394 evt = (struct hci_event_hdr *)(*fw_ptr);
1395 *fw_ptr += sizeof(*evt);
1396 remain -= sizeof(*evt);
1397
1398 if (remain < evt->plen) {
1399 BT_ERR("%s Intel fw corrupted: invalid evt len",
1400 hdev->name);
1401 return -EFAULT;
1402 }
1403
1404 evt_param = *fw_ptr;
1405 *fw_ptr += evt->plen;
1406 remain -= evt->plen;
1407 }
1408
1409 /* Every HCI commands in the firmware file has its correspond event.
1410 * If event is not found or remain is smaller than zero, the firmware
1411 * file is corrupted.
1412 */
1413 if (!evt || !evt_param || remain < 0) {
1414 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1415 return -EFAULT;
1416 }
1417
1418 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1419 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1420 if (IS_ERR(skb)) {
1421 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1422 hdev->name, cmd->opcode, PTR_ERR(skb));
1423 return PTR_ERR(skb);
1424 }
1425
1426 /* It ensures that the returned event matches the event data read from
1427 * the firmware file. At fist, it checks the length and then
1428 * the contents of the event.
1429 */
1430 if (skb->len != evt->plen) {
1431 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1432 le16_to_cpu(cmd->opcode));
1433 kfree_skb(skb);
1434 return -EFAULT;
1435 }
1436
1437 if (memcmp(skb->data, evt_param, evt->plen)) {
1438 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1439 hdev->name, le16_to_cpu(cmd->opcode));
1440 kfree_skb(skb);
1441 return -EFAULT;
1442 }
1443 kfree_skb(skb);
1444
1445 return 0;
1446 }
1447
1448 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1449
1450 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1451 {
1452 struct sk_buff *skb;
1453 struct hci_rp_read_bd_addr *rp;
1454
1455 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1456 HCI_INIT_TIMEOUT);
1457 if (IS_ERR(skb)) {
1458 BT_ERR("%s reading Intel device address failed (%ld)",
1459 hdev->name, PTR_ERR(skb));
1460 return PTR_ERR(skb);
1461 }
1462
1463 if (skb->len != sizeof(*rp)) {
1464 BT_ERR("%s Intel device address length mismatch", hdev->name);
1465 kfree_skb(skb);
1466 return -EIO;
1467 }
1468
1469 rp = (struct hci_rp_read_bd_addr *)skb->data;
1470 if (rp->status) {
1471 BT_ERR("%s Intel device address result failed (%02x)",
1472 hdev->name, rp->status);
1473 kfree_skb(skb);
1474 return -bt_to_errno(rp->status);
1475 }
1476
1477 /* For some Intel based controllers, the default Bluetooth device
1478 * address 00:03:19:9E:8B:00 can be found. These controllers are
1479 * fully operational, but have the danger of duplicate addresses
1480 * and that in turn can cause problems with Bluetooth operation.
1481 */
1482 if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1483 BT_ERR("%s found Intel default device address (%pMR)",
1484 hdev->name, &rp->bdaddr);
1485 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1486 }
1487
1488 kfree_skb(skb);
1489
1490 return 0;
1491 }
1492
1493 static int btusb_setup_intel(struct hci_dev *hdev)
1494 {
1495 struct sk_buff *skb;
1496 const struct firmware *fw;
1497 const u8 *fw_ptr;
1498 int disable_patch;
1499 struct intel_version *ver;
1500
1501 const u8 mfg_enable[] = { 0x01, 0x00 };
1502 const u8 mfg_disable[] = { 0x00, 0x00 };
1503 const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1504 const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1505
1506 BT_DBG("%s", hdev->name);
1507
1508 /* The controller has a bug with the first HCI command sent to it
1509 * returning number of completed commands as zero. This would stall the
1510 * command processing in the Bluetooth core.
1511 *
1512 * As a workaround, send HCI Reset command first which will reset the
1513 * number of completed commands and allow normal command processing
1514 * from now on.
1515 */
1516 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1517 if (IS_ERR(skb)) {
1518 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1519 hdev->name, PTR_ERR(skb));
1520 return PTR_ERR(skb);
1521 }
1522 kfree_skb(skb);
1523
1524 /* Read Intel specific controller version first to allow selection of
1525 * which firmware file to load.
1526 *
1527 * The returned information are hardware variant and revision plus
1528 * firmware variant, revision and build number.
1529 */
1530 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1531 if (IS_ERR(skb)) {
1532 BT_ERR("%s reading Intel fw version command failed (%ld)",
1533 hdev->name, PTR_ERR(skb));
1534 return PTR_ERR(skb);
1535 }
1536
1537 if (skb->len != sizeof(*ver)) {
1538 BT_ERR("%s Intel version event length mismatch", hdev->name);
1539 kfree_skb(skb);
1540 return -EIO;
1541 }
1542
1543 ver = (struct intel_version *)skb->data;
1544 if (ver->status) {
1545 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1546 ver->status);
1547 kfree_skb(skb);
1548 return -bt_to_errno(ver->status);
1549 }
1550
1551 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1552 hdev->name, ver->hw_platform, ver->hw_variant,
1553 ver->hw_revision, ver->fw_variant, ver->fw_revision,
1554 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1555 ver->fw_patch_num);
1556
1557 /* fw_patch_num indicates the version of patch the device currently
1558 * have. If there is no patch data in the device, it is always 0x00.
1559 * So, if it is other than 0x00, no need to patch the deivce again.
1560 */
1561 if (ver->fw_patch_num) {
1562 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1563 hdev->name, ver->fw_patch_num);
1564 kfree_skb(skb);
1565 btusb_check_bdaddr_intel(hdev);
1566 return 0;
1567 }
1568
1569 /* Opens the firmware patch file based on the firmware version read
1570 * from the controller. If it fails to open the matching firmware
1571 * patch file, it tries to open the default firmware patch file.
1572 * If no patch file is found, allow the device to operate without
1573 * a patch.
1574 */
1575 fw = btusb_setup_intel_get_fw(hdev, ver);
1576 if (!fw) {
1577 kfree_skb(skb);
1578 btusb_check_bdaddr_intel(hdev);
1579 return 0;
1580 }
1581 fw_ptr = fw->data;
1582
1583 /* This Intel specific command enables the manufacturer mode of the
1584 * controller.
1585 *
1586 * Only while this mode is enabled, the driver can download the
1587 * firmware patch data and configuration parameters.
1588 */
1589 skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1590 if (IS_ERR(skb)) {
1591 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1592 hdev->name, PTR_ERR(skb));
1593 release_firmware(fw);
1594 return PTR_ERR(skb);
1595 }
1596
1597 if (skb->data[0]) {
1598 u8 evt_status = skb->data[0];
1599
1600 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1601 hdev->name, evt_status);
1602 kfree_skb(skb);
1603 release_firmware(fw);
1604 return -bt_to_errno(evt_status);
1605 }
1606 kfree_skb(skb);
1607
1608 disable_patch = 1;
1609
1610 /* The firmware data file consists of list of Intel specific HCI
1611 * commands and its expected events. The first byte indicates the
1612 * type of the message, either HCI command or HCI event.
1613 *
1614 * It reads the command and its expected event from the firmware file,
1615 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1616 * the returned event is compared with the event read from the firmware
1617 * file and it will continue until all the messages are downloaded to
1618 * the controller.
1619 *
1620 * Once the firmware patching is completed successfully,
1621 * the manufacturer mode is disabled with reset and activating the
1622 * downloaded patch.
1623 *
1624 * If the firmware patching fails, the manufacturer mode is
1625 * disabled with reset and deactivating the patch.
1626 *
1627 * If the default patch file is used, no reset is done when disabling
1628 * the manufacturer.
1629 */
1630 while (fw->size > fw_ptr - fw->data) {
1631 int ret;
1632
1633 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1634 &disable_patch);
1635 if (ret < 0)
1636 goto exit_mfg_deactivate;
1637 }
1638
1639 release_firmware(fw);
1640
1641 if (disable_patch)
1642 goto exit_mfg_disable;
1643
1644 /* Patching completed successfully and disable the manufacturer mode
1645 * with reset and activate the downloaded firmware patches.
1646 */
1647 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1648 mfg_reset_activate, HCI_INIT_TIMEOUT);
1649 if (IS_ERR(skb)) {
1650 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1651 hdev->name, PTR_ERR(skb));
1652 return PTR_ERR(skb);
1653 }
1654 kfree_skb(skb);
1655
1656 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1657 hdev->name);
1658
1659 btusb_check_bdaddr_intel(hdev);
1660 return 0;
1661
1662 exit_mfg_disable:
1663 /* Disable the manufacturer mode without reset */
1664 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1665 HCI_INIT_TIMEOUT);
1666 if (IS_ERR(skb)) {
1667 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1668 hdev->name, PTR_ERR(skb));
1669 return PTR_ERR(skb);
1670 }
1671 kfree_skb(skb);
1672
1673 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1674
1675 btusb_check_bdaddr_intel(hdev);
1676 return 0;
1677
1678 exit_mfg_deactivate:
1679 release_firmware(fw);
1680
1681 /* Patching failed. Disable the manufacturer mode with reset and
1682 * deactivate the downloaded firmware patches.
1683 */
1684 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1685 mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1686 if (IS_ERR(skb)) {
1687 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1688 hdev->name, PTR_ERR(skb));
1689 return PTR_ERR(skb);
1690 }
1691 kfree_skb(skb);
1692
1693 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1694 hdev->name);
1695
1696 btusb_check_bdaddr_intel(hdev);
1697 return 0;
1698 }
1699
1700 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1701 {
1702 struct sk_buff *skb;
1703 long ret;
1704
1705 skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
1706 if (IS_ERR(skb)) {
1707 ret = PTR_ERR(skb);
1708 BT_ERR("%s: changing Intel device address failed (%ld)",
1709 hdev->name, ret);
1710 return ret;
1711 }
1712 kfree_skb(skb);
1713
1714 return 0;
1715 }
1716
1717 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
1718 const bdaddr_t *bdaddr)
1719 {
1720 struct sk_buff *skb;
1721 u8 buf[8];
1722 long ret;
1723
1724 buf[0] = 0xfe;
1725 buf[1] = sizeof(bdaddr_t);
1726 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
1727
1728 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
1729 if (IS_ERR(skb)) {
1730 ret = PTR_ERR(skb);
1731 BT_ERR("%s: changing Marvell device address failed (%ld)",
1732 hdev->name, ret);
1733 return ret;
1734 }
1735 kfree_skb(skb);
1736
1737 return 0;
1738 }
1739
1740 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
1741
1742 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1743 {
1744 struct btusb_data *data = hci_get_drvdata(hdev);
1745 struct usb_device *udev = data->udev;
1746 char fw_name[64];
1747 const struct firmware *fw;
1748 const u8 *fw_ptr;
1749 size_t fw_size;
1750 const struct hci_command_hdr *cmd;
1751 const u8 *cmd_param;
1752 u16 opcode;
1753 struct sk_buff *skb;
1754 struct hci_rp_read_local_version *ver;
1755 struct hci_rp_read_bd_addr *bda;
1756 long ret;
1757
1758 snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1759 udev->product ? udev->product : "BCM",
1760 le16_to_cpu(udev->descriptor.idVendor),
1761 le16_to_cpu(udev->descriptor.idProduct));
1762
1763 ret = request_firmware(&fw, fw_name, &hdev->dev);
1764 if (ret < 0) {
1765 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
1766 return 0;
1767 }
1768
1769 /* Reset */
1770 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1771 if (IS_ERR(skb)) {
1772 ret = PTR_ERR(skb);
1773 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1774 goto done;
1775 }
1776 kfree_skb(skb);
1777
1778 /* Read Local Version Info */
1779 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1780 HCI_INIT_TIMEOUT);
1781 if (IS_ERR(skb)) {
1782 ret = PTR_ERR(skb);
1783 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1784 hdev->name, ret);
1785 goto done;
1786 }
1787
1788 if (skb->len != sizeof(*ver)) {
1789 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1790 hdev->name);
1791 kfree_skb(skb);
1792 ret = -EIO;
1793 goto done;
1794 }
1795
1796 ver = (struct hci_rp_read_local_version *)skb->data;
1797 BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1798 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1799 ver->lmp_ver, ver->lmp_subver);
1800 kfree_skb(skb);
1801
1802 /* Start Download */
1803 skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1804 if (IS_ERR(skb)) {
1805 ret = PTR_ERR(skb);
1806 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1807 hdev->name, ret);
1808 goto reset_fw;
1809 }
1810 kfree_skb(skb);
1811
1812 /* 50 msec delay after Download Minidrv completes */
1813 msleep(50);
1814
1815 fw_ptr = fw->data;
1816 fw_size = fw->size;
1817
1818 while (fw_size >= sizeof(*cmd)) {
1819 cmd = (struct hci_command_hdr *)fw_ptr;
1820 fw_ptr += sizeof(*cmd);
1821 fw_size -= sizeof(*cmd);
1822
1823 if (fw_size < cmd->plen) {
1824 BT_ERR("%s: BCM: patch %s is corrupted",
1825 hdev->name, fw_name);
1826 ret = -EINVAL;
1827 goto reset_fw;
1828 }
1829
1830 cmd_param = fw_ptr;
1831 fw_ptr += cmd->plen;
1832 fw_size -= cmd->plen;
1833
1834 opcode = le16_to_cpu(cmd->opcode);
1835
1836 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1837 HCI_INIT_TIMEOUT);
1838 if (IS_ERR(skb)) {
1839 ret = PTR_ERR(skb);
1840 BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1841 hdev->name, opcode, ret);
1842 goto reset_fw;
1843 }
1844 kfree_skb(skb);
1845 }
1846
1847 /* 250 msec delay after Launch Ram completes */
1848 msleep(250);
1849
1850 reset_fw:
1851 /* Reset */
1852 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1853 if (IS_ERR(skb)) {
1854 ret = PTR_ERR(skb);
1855 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1856 goto done;
1857 }
1858 kfree_skb(skb);
1859
1860 /* Read Local Version Info */
1861 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1862 HCI_INIT_TIMEOUT);
1863 if (IS_ERR(skb)) {
1864 ret = PTR_ERR(skb);
1865 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1866 hdev->name, ret);
1867 goto done;
1868 }
1869
1870 if (skb->len != sizeof(*ver)) {
1871 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1872 hdev->name);
1873 kfree_skb(skb);
1874 ret = -EIO;
1875 goto done;
1876 }
1877
1878 ver = (struct hci_rp_read_local_version *)skb->data;
1879 BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1880 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1881 ver->lmp_ver, ver->lmp_subver);
1882 kfree_skb(skb);
1883
1884 /* Read BD Address */
1885 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1886 HCI_INIT_TIMEOUT);
1887 if (IS_ERR(skb)) {
1888 ret = PTR_ERR(skb);
1889 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
1890 hdev->name, ret);
1891 goto done;
1892 }
1893
1894 if (skb->len != sizeof(*bda)) {
1895 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
1896 hdev->name);
1897 kfree_skb(skb);
1898 ret = -EIO;
1899 goto done;
1900 }
1901
1902 bda = (struct hci_rp_read_bd_addr *)skb->data;
1903 if (bda->status) {
1904 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
1905 hdev->name, bda->status);
1906 kfree_skb(skb);
1907 ret = -bt_to_errno(bda->status);
1908 goto done;
1909 }
1910
1911 /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
1912 * with no configured address.
1913 */
1914 if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
1915 BT_INFO("%s: BCM: using default device address (%pMR)",
1916 hdev->name, &bda->bdaddr);
1917 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1918 }
1919
1920 kfree_skb(skb);
1921
1922 done:
1923 release_firmware(fw);
1924
1925 return ret;
1926 }
1927
1928 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1929 {
1930 struct sk_buff *skb;
1931 long ret;
1932
1933 skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
1934 if (IS_ERR(skb)) {
1935 ret = PTR_ERR(skb);
1936 BT_ERR("%s: BCM: Change address command failed (%ld)",
1937 hdev->name, ret);
1938 return ret;
1939 }
1940 kfree_skb(skb);
1941
1942 return 0;
1943 }
1944
1945 static int btusb_probe(struct usb_interface *intf,
1946 const struct usb_device_id *id)
1947 {
1948 struct usb_endpoint_descriptor *ep_desc;
1949 struct btusb_data *data;
1950 struct hci_dev *hdev;
1951 int i, err;
1952
1953 BT_DBG("intf %p id %p", intf, id);
1954
1955 /* interface numbers are hardcoded in the spec */
1956 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1957 return -ENODEV;
1958
1959 if (!id->driver_info) {
1960 const struct usb_device_id *match;
1961
1962 match = usb_match_id(intf, blacklist_table);
1963 if (match)
1964 id = match;
1965 }
1966
1967 if (id->driver_info == BTUSB_IGNORE)
1968 return -ENODEV;
1969
1970 if (id->driver_info & BTUSB_ATH3012) {
1971 struct usb_device *udev = interface_to_usbdev(intf);
1972
1973 /* Old firmware would otherwise let ath3k driver load
1974 * patch and sysconfig files */
1975 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1976 return -ENODEV;
1977 }
1978
1979 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1980 if (!data)
1981 return -ENOMEM;
1982
1983 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1984 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1985
1986 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1987 data->intr_ep = ep_desc;
1988 continue;
1989 }
1990
1991 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1992 data->bulk_tx_ep = ep_desc;
1993 continue;
1994 }
1995
1996 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1997 data->bulk_rx_ep = ep_desc;
1998 continue;
1999 }
2000 }
2001
2002 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2003 return -ENODEV;
2004
2005 data->cmdreq_type = USB_TYPE_CLASS;
2006
2007 data->udev = interface_to_usbdev(intf);
2008 data->intf = intf;
2009
2010 INIT_WORK(&data->work, btusb_work);
2011 INIT_WORK(&data->waker, btusb_waker);
2012 init_usb_anchor(&data->deferred);
2013 init_usb_anchor(&data->tx_anchor);
2014 spin_lock_init(&data->txlock);
2015
2016 init_usb_anchor(&data->intr_anchor);
2017 init_usb_anchor(&data->bulk_anchor);
2018 init_usb_anchor(&data->isoc_anchor);
2019 spin_lock_init(&data->rxlock);
2020
2021 data->recv_bulk = btusb_recv_bulk;
2022
2023 hdev = hci_alloc_dev();
2024 if (!hdev)
2025 return -ENOMEM;
2026
2027 hdev->bus = HCI_USB;
2028 hci_set_drvdata(hdev, data);
2029
2030 data->hdev = hdev;
2031
2032 SET_HCIDEV_DEV(hdev, &intf->dev);
2033
2034 hdev->open = btusb_open;
2035 hdev->close = btusb_close;
2036 hdev->flush = btusb_flush;
2037 hdev->send = btusb_send_frame;
2038 hdev->notify = btusb_notify;
2039
2040 if (id->driver_info & BTUSB_BCM92035)
2041 hdev->setup = btusb_setup_bcm92035;
2042
2043 if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2044 hdev->setup = btusb_setup_bcm_patchram;
2045 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
2046 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2047 }
2048
2049 if (id->driver_info & BTUSB_INTEL) {
2050 hdev->setup = btusb_setup_intel;
2051 hdev->set_bdaddr = btusb_set_bdaddr_intel;
2052 }
2053
2054 if (id->driver_info & BTUSB_MARVELL)
2055 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2056
2057 if (id->driver_info & BTUSB_INTEL_BOOT)
2058 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2059
2060 /* Interface numbers are hardcoded in the specification */
2061 data->isoc = usb_ifnum_to_if(data->udev, 1);
2062
2063 if (!reset)
2064 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2065
2066 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2067 if (!disable_scofix)
2068 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2069 }
2070
2071 if (id->driver_info & BTUSB_BROKEN_ISOC)
2072 data->isoc = NULL;
2073
2074 if (id->driver_info & BTUSB_DIGIANSWER) {
2075 data->cmdreq_type = USB_TYPE_VENDOR;
2076 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2077 }
2078
2079 if (id->driver_info & BTUSB_CSR) {
2080 struct usb_device *udev = data->udev;
2081 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2082
2083 /* Old firmware would otherwise execute USB reset */
2084 if (bcdDevice < 0x117)
2085 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2086
2087 /* Fake CSR devices with broken commands */
2088 if (bcdDevice <= 0x100)
2089 hdev->setup = btusb_setup_csr;
2090 }
2091
2092 if (id->driver_info & BTUSB_SNIFFER) {
2093 struct usb_device *udev = data->udev;
2094
2095 /* New sniffer firmware has crippled HCI interface */
2096 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2097 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2098 }
2099
2100 if (id->driver_info & BTUSB_INTEL_BOOT) {
2101 /* A bug in the bootloader causes that interrupt interface is
2102 * only enabled after receiving SetInterface(0, AltSetting=0).
2103 */
2104 err = usb_set_interface(data->udev, 0, 0);
2105 if (err < 0) {
2106 BT_ERR("failed to set interface 0, alt 0 %d", err);
2107 hci_free_dev(hdev);
2108 return err;
2109 }
2110 }
2111
2112 if (data->isoc) {
2113 err = usb_driver_claim_interface(&btusb_driver,
2114 data->isoc, data);
2115 if (err < 0) {
2116 hci_free_dev(hdev);
2117 return err;
2118 }
2119 }
2120
2121 err = hci_register_dev(hdev);
2122 if (err < 0) {
2123 hci_free_dev(hdev);
2124 return err;
2125 }
2126
2127 usb_set_intfdata(intf, data);
2128
2129 return 0;
2130 }
2131
2132 static void btusb_disconnect(struct usb_interface *intf)
2133 {
2134 struct btusb_data *data = usb_get_intfdata(intf);
2135 struct hci_dev *hdev;
2136
2137 BT_DBG("intf %p", intf);
2138
2139 if (!data)
2140 return;
2141
2142 hdev = data->hdev;
2143 usb_set_intfdata(data->intf, NULL);
2144
2145 if (data->isoc)
2146 usb_set_intfdata(data->isoc, NULL);
2147
2148 hci_unregister_dev(hdev);
2149
2150 if (intf == data->isoc)
2151 usb_driver_release_interface(&btusb_driver, data->intf);
2152 else if (data->isoc)
2153 usb_driver_release_interface(&btusb_driver, data->isoc);
2154
2155 btusb_free_frags(data);
2156 hci_free_dev(hdev);
2157 }
2158
2159 #ifdef CONFIG_PM
2160 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2161 {
2162 struct btusb_data *data = usb_get_intfdata(intf);
2163
2164 BT_DBG("intf %p", intf);
2165
2166 if (data->suspend_count++)
2167 return 0;
2168
2169 spin_lock_irq(&data->txlock);
2170 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
2171 set_bit(BTUSB_SUSPENDING, &data->flags);
2172 spin_unlock_irq(&data->txlock);
2173 } else {
2174 spin_unlock_irq(&data->txlock);
2175 data->suspend_count--;
2176 return -EBUSY;
2177 }
2178
2179 cancel_work_sync(&data->work);
2180
2181 btusb_stop_traffic(data);
2182 usb_kill_anchored_urbs(&data->tx_anchor);
2183
2184 return 0;
2185 }
2186
2187 static void play_deferred(struct btusb_data *data)
2188 {
2189 struct urb *urb;
2190 int err;
2191
2192 while ((urb = usb_get_from_anchor(&data->deferred))) {
2193 err = usb_submit_urb(urb, GFP_ATOMIC);
2194 if (err < 0)
2195 break;
2196
2197 data->tx_in_flight++;
2198 }
2199 usb_scuttle_anchored_urbs(&data->deferred);
2200 }
2201
2202 static int btusb_resume(struct usb_interface *intf)
2203 {
2204 struct btusb_data *data = usb_get_intfdata(intf);
2205 struct hci_dev *hdev = data->hdev;
2206 int err = 0;
2207
2208 BT_DBG("intf %p", intf);
2209
2210 if (--data->suspend_count)
2211 return 0;
2212
2213 if (!test_bit(HCI_RUNNING, &hdev->flags))
2214 goto done;
2215
2216 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2217 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2218 if (err < 0) {
2219 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2220 goto failed;
2221 }
2222 }
2223
2224 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2225 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2226 if (err < 0) {
2227 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2228 goto failed;
2229 }
2230
2231 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2232 }
2233
2234 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2235 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2236 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2237 else
2238 btusb_submit_isoc_urb(hdev, GFP_NOIO);
2239 }
2240
2241 spin_lock_irq(&data->txlock);
2242 play_deferred(data);
2243 clear_bit(BTUSB_SUSPENDING, &data->flags);
2244 spin_unlock_irq(&data->txlock);
2245 schedule_work(&data->work);
2246
2247 return 0;
2248
2249 failed:
2250 usb_scuttle_anchored_urbs(&data->deferred);
2251 done:
2252 spin_lock_irq(&data->txlock);
2253 clear_bit(BTUSB_SUSPENDING, &data->flags);
2254 spin_unlock_irq(&data->txlock);
2255
2256 return err;
2257 }
2258 #endif
2259
2260 static struct usb_driver btusb_driver = {
2261 .name = "btusb",
2262 .probe = btusb_probe,
2263 .disconnect = btusb_disconnect,
2264 #ifdef CONFIG_PM
2265 .suspend = btusb_suspend,
2266 .resume = btusb_resume,
2267 #endif
2268 .id_table = btusb_table,
2269 .supports_autosuspend = 1,
2270 .disable_hub_initiated_lpm = 1,
2271 };
2272
2273 module_usb_driver(btusb_driver);
2274
2275 module_param(disable_scofix, bool, 0644);
2276 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2277
2278 module_param(force_scofix, bool, 0644);
2279 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2280
2281 module_param(reset, bool, 0644);
2282 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2283
2284 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2285 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2286 MODULE_VERSION(VERSION);
2287 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
This page took 0.1143 seconds and 5 git commands to generate.