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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
[linux-2.6/btrfs-unstable.git] / drivers / bluetooth / btusb.c
blob9f7e539de510d62c17a1e0a1ba7ae4ff34689ac6
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 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(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 const 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(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
154 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
155 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
156 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
157 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
158 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
159 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
160 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
161 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
162 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
163 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
164 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
165 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
166 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
167 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
168 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
169
170 /* Atheros AR5BBU12 with sflash firmware */
171 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
172
173 /* Atheros AR5BBU12 with sflash firmware */
174 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
175 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
176
177 /* Broadcom BCM2035 */
178 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
179 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
180 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
181
182 /* Broadcom BCM2045 */
183 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
184 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
185
186 /* IBM/Lenovo ThinkPad with Broadcom chip */
187 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
188 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
189
190 /* HP laptop with Broadcom chip */
191 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
192
193 /* Dell laptop with Broadcom chip */
194 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
195
196 /* Dell Wireless 370 and 410 devices */
197 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
198 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
199
200 /* Belkin F8T012 and F8T013 devices */
201 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
202 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
203
204 /* Asus WL-BTD202 device */
205 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
206
207 /* Kensington Bluetooth USB adapter */
208 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
209
210 /* RTX Telecom based adapters with buggy SCO support */
211 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
212 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
213
214 /* CONWISE Technology based adapters with buggy SCO support */
215 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
216
217 /* Digianswer devices */
218 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
219 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
220
221 /* CSR BlueCore Bluetooth Sniffer */
222 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
223
224 /* Frontline ComProbe Bluetooth Sniffer */
225 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
226
227 /* Intel Bluetooth device */
228 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
229 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
230
231 { } /* Terminating entry */
232 };
233
234 #define BTUSB_MAX_ISOC_FRAMES 10
235
236 #define BTUSB_INTR_RUNNING 0
237 #define BTUSB_BULK_RUNNING 1
238 #define BTUSB_ISOC_RUNNING 2
239 #define BTUSB_SUSPENDING 3
240 #define BTUSB_DID_ISO_RESUME 4
241
242 struct btusb_data {
243 struct hci_dev *hdev;
244 struct usb_device *udev;
245 struct usb_interface *intf;
246 struct usb_interface *isoc;
247
248 spinlock_t lock;
249
250 unsigned long flags;
251
252 struct work_struct work;
253 struct work_struct waker;
254
255 struct usb_anchor tx_anchor;
256 struct usb_anchor intr_anchor;
257 struct usb_anchor bulk_anchor;
258 struct usb_anchor isoc_anchor;
259 struct usb_anchor deferred;
260 int tx_in_flight;
261 spinlock_t txlock;
262
263 struct usb_endpoint_descriptor *intr_ep;
264 struct usb_endpoint_descriptor *bulk_tx_ep;
265 struct usb_endpoint_descriptor *bulk_rx_ep;
266 struct usb_endpoint_descriptor *isoc_tx_ep;
267 struct usb_endpoint_descriptor *isoc_rx_ep;
268
269 __u8 cmdreq_type;
270
271 unsigned int sco_num;
272 int isoc_altsetting;
273 int suspend_count;
274 };
275
276 static int inc_tx(struct btusb_data *data)
277 {
278 unsigned long flags;
279 int rv;
280
281 spin_lock_irqsave(&data->txlock, flags);
282 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
283 if (!rv)
284 data->tx_in_flight++;
285 spin_unlock_irqrestore(&data->txlock, flags);
286
287 return rv;
288 }
289
290 static void btusb_intr_complete(struct urb *urb)
291 {
292 struct hci_dev *hdev = urb->context;
293 struct btusb_data *data = hci_get_drvdata(hdev);
294 int err;
295
296 BT_DBG("%s urb %p status %d count %d", hdev->name,
297 urb, urb->status, urb->actual_length);
298
299 if (!test_bit(HCI_RUNNING, &hdev->flags))
300 return;
301
302 if (urb->status == 0) {
303 hdev->stat.byte_rx += urb->actual_length;
304
305 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
306 urb->transfer_buffer,
307 urb->actual_length) < 0) {
308 BT_ERR("%s corrupted event packet", hdev->name);
309 hdev->stat.err_rx++;
310 }
311 }
312
313 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
314 return;
315
316 usb_mark_last_busy(data->udev);
317 usb_anchor_urb(urb, &data->intr_anchor);
318
319 err = usb_submit_urb(urb, GFP_ATOMIC);
320 if (err < 0) {
321 /* -EPERM: urb is being killed;
322 * -ENODEV: device got disconnected */
323 if (err != -EPERM && err != -ENODEV)
324 BT_ERR("%s urb %p failed to resubmit (%d)",
325 hdev->name, urb, -err);
326 usb_unanchor_urb(urb);
327 }
328 }
329
330 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
331 {
332 struct btusb_data *data = hci_get_drvdata(hdev);
333 struct urb *urb;
334 unsigned char *buf;
335 unsigned int pipe;
336 int err, size;
337
338 BT_DBG("%s", hdev->name);
339
340 if (!data->intr_ep)
341 return -ENODEV;
342
343 urb = usb_alloc_urb(0, mem_flags);
344 if (!urb)
345 return -ENOMEM;
346
347 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
348
349 buf = kmalloc(size, mem_flags);
350 if (!buf) {
351 usb_free_urb(urb);
352 return -ENOMEM;
353 }
354
355 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
356
357 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
358 btusb_intr_complete, hdev,
359 data->intr_ep->bInterval);
360
361 urb->transfer_flags |= URB_FREE_BUFFER;
362
363 usb_anchor_urb(urb, &data->intr_anchor);
364
365 err = usb_submit_urb(urb, mem_flags);
366 if (err < 0) {
367 if (err != -EPERM && err != -ENODEV)
368 BT_ERR("%s urb %p submission failed (%d)",
369 hdev->name, urb, -err);
370 usb_unanchor_urb(urb);
371 }
372
373 usb_free_urb(urb);
374
375 return err;
376 }
377
378 static void btusb_bulk_complete(struct urb *urb)
379 {
380 struct hci_dev *hdev = urb->context;
381 struct btusb_data *data = hci_get_drvdata(hdev);
382 int err;
383
384 BT_DBG("%s urb %p status %d count %d", hdev->name,
385 urb, urb->status, urb->actual_length);
386
387 if (!test_bit(HCI_RUNNING, &hdev->flags))
388 return;
389
390 if (urb->status == 0) {
391 hdev->stat.byte_rx += urb->actual_length;
392
393 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
394 urb->transfer_buffer,
395 urb->actual_length) < 0) {
396 BT_ERR("%s corrupted ACL packet", hdev->name);
397 hdev->stat.err_rx++;
398 }
399 }
400
401 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
402 return;
403
404 usb_anchor_urb(urb, &data->bulk_anchor);
405 usb_mark_last_busy(data->udev);
406
407 err = usb_submit_urb(urb, GFP_ATOMIC);
408 if (err < 0) {
409 /* -EPERM: urb is being killed;
410 * -ENODEV: device got disconnected */
411 if (err != -EPERM && err != -ENODEV)
412 BT_ERR("%s urb %p failed to resubmit (%d)",
413 hdev->name, urb, -err);
414 usb_unanchor_urb(urb);
415 }
416 }
417
418 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
419 {
420 struct btusb_data *data = hci_get_drvdata(hdev);
421 struct urb *urb;
422 unsigned char *buf;
423 unsigned int pipe;
424 int err, size = HCI_MAX_FRAME_SIZE;
425
426 BT_DBG("%s", hdev->name);
427
428 if (!data->bulk_rx_ep)
429 return -ENODEV;
430
431 urb = usb_alloc_urb(0, mem_flags);
432 if (!urb)
433 return -ENOMEM;
434
435 buf = kmalloc(size, mem_flags);
436 if (!buf) {
437 usb_free_urb(urb);
438 return -ENOMEM;
439 }
440
441 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
442
443 usb_fill_bulk_urb(urb, data->udev, pipe,
444 buf, size, btusb_bulk_complete, hdev);
445
446 urb->transfer_flags |= URB_FREE_BUFFER;
447
448 usb_mark_last_busy(data->udev);
449 usb_anchor_urb(urb, &data->bulk_anchor);
450
451 err = usb_submit_urb(urb, mem_flags);
452 if (err < 0) {
453 if (err != -EPERM && err != -ENODEV)
454 BT_ERR("%s urb %p submission failed (%d)",
455 hdev->name, urb, -err);
456 usb_unanchor_urb(urb);
457 }
458
459 usb_free_urb(urb);
460
461 return err;
462 }
463
464 static void btusb_isoc_complete(struct urb *urb)
465 {
466 struct hci_dev *hdev = urb->context;
467 struct btusb_data *data = hci_get_drvdata(hdev);
468 int i, err;
469
470 BT_DBG("%s urb %p status %d count %d", hdev->name,
471 urb, urb->status, urb->actual_length);
472
473 if (!test_bit(HCI_RUNNING, &hdev->flags))
474 return;
475
476 if (urb->status == 0) {
477 for (i = 0; i < urb->number_of_packets; i++) {
478 unsigned int offset = urb->iso_frame_desc[i].offset;
479 unsigned int length = urb->iso_frame_desc[i].actual_length;
480
481 if (urb->iso_frame_desc[i].status)
482 continue;
483
484 hdev->stat.byte_rx += length;
485
486 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
487 urb->transfer_buffer + offset,
488 length) < 0) {
489 BT_ERR("%s corrupted SCO packet", hdev->name);
490 hdev->stat.err_rx++;
491 }
492 }
493 }
494
495 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
496 return;
497
498 usb_anchor_urb(urb, &data->isoc_anchor);
499
500 err = usb_submit_urb(urb, GFP_ATOMIC);
501 if (err < 0) {
502 /* -EPERM: urb is being killed;
503 * -ENODEV: device got disconnected */
504 if (err != -EPERM && err != -ENODEV)
505 BT_ERR("%s urb %p failed to resubmit (%d)",
506 hdev->name, urb, -err);
507 usb_unanchor_urb(urb);
508 }
509 }
510
511 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
512 {
513 int i, offset = 0;
514
515 BT_DBG("len %d mtu %d", len, mtu);
516
517 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
518 i++, offset += mtu, len -= mtu) {
519 urb->iso_frame_desc[i].offset = offset;
520 urb->iso_frame_desc[i].length = mtu;
521 }
522
523 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
524 urb->iso_frame_desc[i].offset = offset;
525 urb->iso_frame_desc[i].length = len;
526 i++;
527 }
528
529 urb->number_of_packets = i;
530 }
531
532 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
533 {
534 struct btusb_data *data = hci_get_drvdata(hdev);
535 struct urb *urb;
536 unsigned char *buf;
537 unsigned int pipe;
538 int err, size;
539
540 BT_DBG("%s", hdev->name);
541
542 if (!data->isoc_rx_ep)
543 return -ENODEV;
544
545 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
546 if (!urb)
547 return -ENOMEM;
548
549 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
550 BTUSB_MAX_ISOC_FRAMES;
551
552 buf = kmalloc(size, mem_flags);
553 if (!buf) {
554 usb_free_urb(urb);
555 return -ENOMEM;
556 }
557
558 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
559
560 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
561 hdev, data->isoc_rx_ep->bInterval);
562
563 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
564
565 __fill_isoc_descriptor(urb, size,
566 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
567
568 usb_anchor_urb(urb, &data->isoc_anchor);
569
570 err = usb_submit_urb(urb, mem_flags);
571 if (err < 0) {
572 if (err != -EPERM && err != -ENODEV)
573 BT_ERR("%s urb %p submission failed (%d)",
574 hdev->name, urb, -err);
575 usb_unanchor_urb(urb);
576 }
577
578 usb_free_urb(urb);
579
580 return err;
581 }
582
583 static void btusb_tx_complete(struct urb *urb)
584 {
585 struct sk_buff *skb = urb->context;
586 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
587 struct btusb_data *data = hci_get_drvdata(hdev);
588
589 BT_DBG("%s urb %p status %d count %d", hdev->name,
590 urb, urb->status, urb->actual_length);
591
592 if (!test_bit(HCI_RUNNING, &hdev->flags))
593 goto done;
594
595 if (!urb->status)
596 hdev->stat.byte_tx += urb->transfer_buffer_length;
597 else
598 hdev->stat.err_tx++;
599
600 done:
601 spin_lock(&data->txlock);
602 data->tx_in_flight--;
603 spin_unlock(&data->txlock);
604
605 kfree(urb->setup_packet);
606
607 kfree_skb(skb);
608 }
609
610 static void btusb_isoc_tx_complete(struct urb *urb)
611 {
612 struct sk_buff *skb = urb->context;
613 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
614
615 BT_DBG("%s urb %p status %d count %d", hdev->name,
616 urb, urb->status, urb->actual_length);
617
618 if (!test_bit(HCI_RUNNING, &hdev->flags))
619 goto done;
620
621 if (!urb->status)
622 hdev->stat.byte_tx += urb->transfer_buffer_length;
623 else
624 hdev->stat.err_tx++;
625
626 done:
627 kfree(urb->setup_packet);
628
629 kfree_skb(skb);
630 }
631
632 static int btusb_open(struct hci_dev *hdev)
633 {
634 struct btusb_data *data = hci_get_drvdata(hdev);
635 int err;
636
637 BT_DBG("%s", hdev->name);
638
639 err = usb_autopm_get_interface(data->intf);
640 if (err < 0)
641 return err;
642
643 data->intf->needs_remote_wakeup = 1;
644
645 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
646 goto done;
647
648 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
649 goto done;
650
651 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
652 if (err < 0)
653 goto failed;
654
655 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
656 if (err < 0) {
657 usb_kill_anchored_urbs(&data->intr_anchor);
658 goto failed;
659 }
660
661 set_bit(BTUSB_BULK_RUNNING, &data->flags);
662 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
663
664 done:
665 usb_autopm_put_interface(data->intf);
666 return 0;
667
668 failed:
669 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
670 clear_bit(HCI_RUNNING, &hdev->flags);
671 usb_autopm_put_interface(data->intf);
672 return err;
673 }
674
675 static void btusb_stop_traffic(struct btusb_data *data)
676 {
677 usb_kill_anchored_urbs(&data->intr_anchor);
678 usb_kill_anchored_urbs(&data->bulk_anchor);
679 usb_kill_anchored_urbs(&data->isoc_anchor);
680 }
681
682 static int btusb_close(struct hci_dev *hdev)
683 {
684 struct btusb_data *data = hci_get_drvdata(hdev);
685 int err;
686
687 BT_DBG("%s", hdev->name);
688
689 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
690 return 0;
691
692 cancel_work_sync(&data->work);
693 cancel_work_sync(&data->waker);
694
695 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
696 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
697 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
698
699 btusb_stop_traffic(data);
700 err = usb_autopm_get_interface(data->intf);
701 if (err < 0)
702 goto failed;
703
704 data->intf->needs_remote_wakeup = 0;
705 usb_autopm_put_interface(data->intf);
706
707 failed:
708 usb_scuttle_anchored_urbs(&data->deferred);
709 return 0;
710 }
711
712 static int btusb_flush(struct hci_dev *hdev)
713 {
714 struct btusb_data *data = hci_get_drvdata(hdev);
715
716 BT_DBG("%s", hdev->name);
717
718 usb_kill_anchored_urbs(&data->tx_anchor);
719
720 return 0;
721 }
722
723 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
724 {
725 struct btusb_data *data = hci_get_drvdata(hdev);
726 struct usb_ctrlrequest *dr;
727 struct urb *urb;
728 unsigned int pipe;
729 int err;
730
731 BT_DBG("%s", hdev->name);
732
733 if (!test_bit(HCI_RUNNING, &hdev->flags))
734 return -EBUSY;
735
736 skb->dev = (void *) hdev;
737
738 switch (bt_cb(skb)->pkt_type) {
739 case HCI_COMMAND_PKT:
740 urb = usb_alloc_urb(0, GFP_ATOMIC);
741 if (!urb)
742 return -ENOMEM;
743
744 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
745 if (!dr) {
746 usb_free_urb(urb);
747 return -ENOMEM;
748 }
749
750 dr->bRequestType = data->cmdreq_type;
751 dr->bRequest = 0;
752 dr->wIndex = 0;
753 dr->wValue = 0;
754 dr->wLength = __cpu_to_le16(skb->len);
755
756 pipe = usb_sndctrlpipe(data->udev, 0x00);
757
758 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
759 skb->data, skb->len, btusb_tx_complete, skb);
760
761 hdev->stat.cmd_tx++;
762 break;
763
764 case HCI_ACLDATA_PKT:
765 if (!data->bulk_tx_ep)
766 return -ENODEV;
767
768 urb = usb_alloc_urb(0, GFP_ATOMIC);
769 if (!urb)
770 return -ENOMEM;
771
772 pipe = usb_sndbulkpipe(data->udev,
773 data->bulk_tx_ep->bEndpointAddress);
774
775 usb_fill_bulk_urb(urb, data->udev, pipe,
776 skb->data, skb->len, btusb_tx_complete, skb);
777
778 hdev->stat.acl_tx++;
779 break;
780
781 case HCI_SCODATA_PKT:
782 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
783 return -ENODEV;
784
785 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
786 if (!urb)
787 return -ENOMEM;
788
789 pipe = usb_sndisocpipe(data->udev,
790 data->isoc_tx_ep->bEndpointAddress);
791
792 usb_fill_int_urb(urb, data->udev, pipe,
793 skb->data, skb->len, btusb_isoc_tx_complete,
794 skb, data->isoc_tx_ep->bInterval);
795
796 urb->transfer_flags = URB_ISO_ASAP;
797
798 __fill_isoc_descriptor(urb, skb->len,
799 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
800
801 hdev->stat.sco_tx++;
802 goto skip_waking;
803
804 default:
805 return -EILSEQ;
806 }
807
808 err = inc_tx(data);
809 if (err) {
810 usb_anchor_urb(urb, &data->deferred);
811 schedule_work(&data->waker);
812 err = 0;
813 goto done;
814 }
815
816 skip_waking:
817 usb_anchor_urb(urb, &data->tx_anchor);
818
819 err = usb_submit_urb(urb, GFP_ATOMIC);
820 if (err < 0) {
821 if (err != -EPERM && err != -ENODEV)
822 BT_ERR("%s urb %p submission failed (%d)",
823 hdev->name, urb, -err);
824 kfree(urb->setup_packet);
825 usb_unanchor_urb(urb);
826 } else {
827 usb_mark_last_busy(data->udev);
828 }
829
830 done:
831 usb_free_urb(urb);
832 return err;
833 }
834
835 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
836 {
837 struct btusb_data *data = hci_get_drvdata(hdev);
838
839 BT_DBG("%s evt %d", hdev->name, evt);
840
841 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
842 data->sco_num = hci_conn_num(hdev, SCO_LINK);
843 schedule_work(&data->work);
844 }
845 }
846
847 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
848 {
849 struct btusb_data *data = hci_get_drvdata(hdev);
850 struct usb_interface *intf = data->isoc;
851 struct usb_endpoint_descriptor *ep_desc;
852 int i, err;
853
854 if (!data->isoc)
855 return -ENODEV;
856
857 err = usb_set_interface(data->udev, 1, altsetting);
858 if (err < 0) {
859 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
860 return err;
861 }
862
863 data->isoc_altsetting = altsetting;
864
865 data->isoc_tx_ep = NULL;
866 data->isoc_rx_ep = NULL;
867
868 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
869 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
870
871 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
872 data->isoc_tx_ep = ep_desc;
873 continue;
874 }
875
876 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
877 data->isoc_rx_ep = ep_desc;
878 continue;
879 }
880 }
881
882 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
883 BT_ERR("%s invalid SCO descriptors", hdev->name);
884 return -ENODEV;
885 }
886
887 return 0;
888 }
889
890 static void btusb_work(struct work_struct *work)
891 {
892 struct btusb_data *data = container_of(work, struct btusb_data, work);
893 struct hci_dev *hdev = data->hdev;
894 int new_alts;
895 int err;
896
897 if (data->sco_num > 0) {
898 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
899 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
900 if (err < 0) {
901 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
902 usb_kill_anchored_urbs(&data->isoc_anchor);
903 return;
904 }
905
906 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
907 }
908
909 if (hdev->voice_setting & 0x0020) {
910 static const int alts[3] = { 2, 4, 5 };
911 new_alts = alts[data->sco_num - 1];
912 } else {
913 new_alts = data->sco_num;
914 }
915
916 if (data->isoc_altsetting != new_alts) {
917 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
918 usb_kill_anchored_urbs(&data->isoc_anchor);
919
920 if (__set_isoc_interface(hdev, new_alts) < 0)
921 return;
922 }
923
924 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
925 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
926 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
927 else
928 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
929 }
930 } else {
931 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
932 usb_kill_anchored_urbs(&data->isoc_anchor);
933
934 __set_isoc_interface(hdev, 0);
935 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
936 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
937 }
938 }
939
940 static void btusb_waker(struct work_struct *work)
941 {
942 struct btusb_data *data = container_of(work, struct btusb_data, waker);
943 int err;
944
945 err = usb_autopm_get_interface(data->intf);
946 if (err < 0)
947 return;
948
949 usb_autopm_put_interface(data->intf);
950 }
951
952 static int btusb_setup_bcm92035(struct hci_dev *hdev)
953 {
954 struct sk_buff *skb;
955 u8 val = 0x00;
956
957 BT_DBG("%s", hdev->name);
958
959 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
960 if (IS_ERR(skb))
961 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
962 else
963 kfree_skb(skb);
964
965 return 0;
966 }
967
968 struct intel_version {
969 u8 status;
970 u8 hw_platform;
971 u8 hw_variant;
972 u8 hw_revision;
973 u8 fw_variant;
974 u8 fw_revision;
975 u8 fw_build_num;
976 u8 fw_build_ww;
977 u8 fw_build_yy;
978 u8 fw_patch_num;
979 } __packed;
980
981 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
982 struct intel_version *ver)
983 {
984 const struct firmware *fw;
985 char fwname[64];
986 int ret;
987
988 snprintf(fwname, sizeof(fwname),
989 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
990 ver->hw_platform, ver->hw_variant, ver->hw_revision,
991 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
992 ver->fw_build_ww, ver->fw_build_yy);
993
994 ret = request_firmware(&fw, fwname, &hdev->dev);
995 if (ret < 0) {
996 if (ret == -EINVAL) {
997 BT_ERR("%s Intel firmware file request failed (%d)",
998 hdev->name, ret);
999 return NULL;
1000 }
1001
1002 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1003 hdev->name, fwname, ret);
1004
1005 /* If the correct firmware patch file is not found, use the
1006 * default firmware patch file instead
1007 */
1008 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1009 ver->hw_platform, ver->hw_variant);
1010 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1011 BT_ERR("%s failed to open default Intel fw file: %s",
1012 hdev->name, fwname);
1013 return NULL;
1014 }
1015 }
1016
1017 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1018
1019 return fw;
1020 }
1021
1022 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1023 const struct firmware *fw,
1024 const u8 **fw_ptr, int *disable_patch)
1025 {
1026 struct sk_buff *skb;
1027 struct hci_command_hdr *cmd;
1028 const u8 *cmd_param;
1029 struct hci_event_hdr *evt = NULL;
1030 const u8 *evt_param = NULL;
1031 int remain = fw->size - (*fw_ptr - fw->data);
1032
1033 /* The first byte indicates the types of the patch command or event.
1034 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1035 * in the current firmware buffer doesn't start with 0x01 or
1036 * the size of remain buffer is smaller than HCI command header,
1037 * the firmware file is corrupted and it should stop the patching
1038 * process.
1039 */
1040 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1041 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1042 return -EINVAL;
1043 }
1044 (*fw_ptr)++;
1045 remain--;
1046
1047 cmd = (struct hci_command_hdr *)(*fw_ptr);
1048 *fw_ptr += sizeof(*cmd);
1049 remain -= sizeof(*cmd);
1050
1051 /* Ensure that the remain firmware data is long enough than the length
1052 * of command parameter. If not, the firmware file is corrupted.
1053 */
1054 if (remain < cmd->plen) {
1055 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1056 return -EFAULT;
1057 }
1058
1059 /* If there is a command that loads a patch in the firmware
1060 * file, then enable the patch upon success, otherwise just
1061 * disable the manufacturer mode, for example patch activation
1062 * is not required when the default firmware patch file is used
1063 * because there are no patch data to load.
1064 */
1065 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1066 *disable_patch = 0;
1067
1068 cmd_param = *fw_ptr;
1069 *fw_ptr += cmd->plen;
1070 remain -= cmd->plen;
1071
1072 /* This reads the expected events when the above command is sent to the
1073 * device. Some vendor commands expects more than one events, for
1074 * example command status event followed by vendor specific event.
1075 * For this case, it only keeps the last expected event. so the command
1076 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1077 * last expected event.
1078 */
1079 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1080 (*fw_ptr)++;
1081 remain--;
1082
1083 evt = (struct hci_event_hdr *)(*fw_ptr);
1084 *fw_ptr += sizeof(*evt);
1085 remain -= sizeof(*evt);
1086
1087 if (remain < evt->plen) {
1088 BT_ERR("%s Intel fw corrupted: invalid evt len",
1089 hdev->name);
1090 return -EFAULT;
1091 }
1092
1093 evt_param = *fw_ptr;
1094 *fw_ptr += evt->plen;
1095 remain -= evt->plen;
1096 }
1097
1098 /* Every HCI commands in the firmware file has its correspond event.
1099 * If event is not found or remain is smaller than zero, the firmware
1100 * file is corrupted.
1101 */
1102 if (!evt || !evt_param || remain < 0) {
1103 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1104 return -EFAULT;
1105 }
1106
1107 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1108 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1109 if (IS_ERR(skb)) {
1110 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1111 hdev->name, cmd->opcode, PTR_ERR(skb));
1112 return PTR_ERR(skb);
1113 }
1114
1115 /* It ensures that the returned event matches the event data read from
1116 * the firmware file. At fist, it checks the length and then
1117 * the contents of the event.
1118 */
1119 if (skb->len != evt->plen) {
1120 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1121 le16_to_cpu(cmd->opcode));
1122 kfree_skb(skb);
1123 return -EFAULT;
1124 }
1125
1126 if (memcmp(skb->data, evt_param, evt->plen)) {
1127 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1128 hdev->name, le16_to_cpu(cmd->opcode));
1129 kfree_skb(skb);
1130 return -EFAULT;
1131 }
1132 kfree_skb(skb);
1133
1134 return 0;
1135 }
1136
1137 static int btusb_setup_intel(struct hci_dev *hdev)
1138 {
1139 struct sk_buff *skb;
1140 const struct firmware *fw;
1141 const u8 *fw_ptr;
1142 int disable_patch;
1143 struct intel_version *ver;
1144
1145 const u8 mfg_enable[] = { 0x01, 0x00 };
1146 const u8 mfg_disable[] = { 0x00, 0x00 };
1147 const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1148 const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1149
1150 BT_DBG("%s", hdev->name);
1151
1152 /* The controller has a bug with the first HCI command sent to it
1153 * returning number of completed commands as zero. This would stall the
1154 * command processing in the Bluetooth core.
1155 *
1156 * As a workaround, send HCI Reset command first which will reset the
1157 * number of completed commands and allow normal command processing
1158 * from now on.
1159 */
1160 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1161 if (IS_ERR(skb)) {
1162 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1163 hdev->name, PTR_ERR(skb));
1164 return PTR_ERR(skb);
1165 }
1166 kfree_skb(skb);
1167
1168 /* Read Intel specific controller version first to allow selection of
1169 * which firmware file to load.
1170 *
1171 * The returned information are hardware variant and revision plus
1172 * firmware variant, revision and build number.
1173 */
1174 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1175 if (IS_ERR(skb)) {
1176 BT_ERR("%s reading Intel fw version command failed (%ld)",
1177 hdev->name, PTR_ERR(skb));
1178 return PTR_ERR(skb);
1179 }
1180
1181 if (skb->len != sizeof(*ver)) {
1182 BT_ERR("%s Intel version event length mismatch", hdev->name);
1183 kfree_skb(skb);
1184 return -EIO;
1185 }
1186
1187 ver = (struct intel_version *)skb->data;
1188 if (ver->status) {
1189 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1190 ver->status);
1191 kfree_skb(skb);
1192 return -bt_to_errno(ver->status);
1193 }
1194
1195 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1196 hdev->name, ver->hw_platform, ver->hw_variant,
1197 ver->hw_revision, ver->fw_variant, ver->fw_revision,
1198 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1199 ver->fw_patch_num);
1200
1201 /* fw_patch_num indicates the version of patch the device currently
1202 * have. If there is no patch data in the device, it is always 0x00.
1203 * So, if it is other than 0x00, no need to patch the deivce again.
1204 */
1205 if (ver->fw_patch_num) {
1206 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1207 hdev->name, ver->fw_patch_num);
1208 kfree_skb(skb);
1209 return 0;
1210 }
1211
1212 /* Opens the firmware patch file based on the firmware version read
1213 * from the controller. If it fails to open the matching firmware
1214 * patch file, it tries to open the default firmware patch file.
1215 * If no patch file is found, allow the device to operate without
1216 * a patch.
1217 */
1218 fw = btusb_setup_intel_get_fw(hdev, ver);
1219 if (!fw) {
1220 kfree_skb(skb);
1221 return 0;
1222 }
1223 fw_ptr = fw->data;
1224
1225 /* This Intel specific command enables the manufacturer mode of the
1226 * controller.
1227 *
1228 * Only while this mode is enabled, the driver can download the
1229 * firmware patch data and configuration parameters.
1230 */
1231 skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1232 if (IS_ERR(skb)) {
1233 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1234 hdev->name, PTR_ERR(skb));
1235 release_firmware(fw);
1236 return PTR_ERR(skb);
1237 }
1238
1239 if (skb->data[0]) {
1240 u8 evt_status = skb->data[0];
1241 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1242 hdev->name, evt_status);
1243 kfree_skb(skb);
1244 release_firmware(fw);
1245 return -bt_to_errno(evt_status);
1246 }
1247 kfree_skb(skb);
1248
1249 disable_patch = 1;
1250
1251 /* The firmware data file consists of list of Intel specific HCI
1252 * commands and its expected events. The first byte indicates the
1253 * type of the message, either HCI command or HCI event.
1254 *
1255 * It reads the command and its expected event from the firmware file,
1256 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1257 * the returned event is compared with the event read from the firmware
1258 * file and it will continue until all the messages are downloaded to
1259 * the controller.
1260 *
1261 * Once the firmware patching is completed successfully,
1262 * the manufacturer mode is disabled with reset and activating the
1263 * downloaded patch.
1264 *
1265 * If the firmware patching fails, the manufacturer mode is
1266 * disabled with reset and deactivating the patch.
1267 *
1268 * If the default patch file is used, no reset is done when disabling
1269 * the manufacturer.
1270 */
1271 while (fw->size > fw_ptr - fw->data) {
1272 int ret;
1273
1274 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1275 &disable_patch);
1276 if (ret < 0)
1277 goto exit_mfg_deactivate;
1278 }
1279
1280 release_firmware(fw);
1281
1282 if (disable_patch)
1283 goto exit_mfg_disable;
1284
1285 /* Patching completed successfully and disable the manufacturer mode
1286 * with reset and activate the downloaded firmware patches.
1287 */
1288 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1289 mfg_reset_activate, HCI_INIT_TIMEOUT);
1290 if (IS_ERR(skb)) {
1291 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1292 hdev->name, PTR_ERR(skb));
1293 return PTR_ERR(skb);
1294 }
1295 kfree_skb(skb);
1296
1297 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1298 hdev->name);
1299
1300 return 0;
1301
1302 exit_mfg_disable:
1303 /* Disable the manufacturer mode without reset */
1304 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1305 HCI_INIT_TIMEOUT);
1306 if (IS_ERR(skb)) {
1307 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1308 hdev->name, PTR_ERR(skb));
1309 return PTR_ERR(skb);
1310 }
1311 kfree_skb(skb);
1312
1313 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1314 return 0;
1315
1316 exit_mfg_deactivate:
1317 release_firmware(fw);
1318
1319 /* Patching failed. Disable the manufacturer mode with reset and
1320 * deactivate the downloaded firmware patches.
1321 */
1322 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1323 mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1324 if (IS_ERR(skb)) {
1325 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1326 hdev->name, PTR_ERR(skb));
1327 return PTR_ERR(skb);
1328 }
1329 kfree_skb(skb);
1330
1331 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1332 hdev->name);
1333
1334 return 0;
1335 }
1336
1337 static int btusb_probe(struct usb_interface *intf,
1338 const struct usb_device_id *id)
1339 {
1340 struct usb_endpoint_descriptor *ep_desc;
1341 struct btusb_data *data;
1342 struct hci_dev *hdev;
1343 int i, err;
1344
1345 BT_DBG("intf %p id %p", intf, id);
1346
1347 /* interface numbers are hardcoded in the spec */
1348 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1349 return -ENODEV;
1350
1351 if (!id->driver_info) {
1352 const struct usb_device_id *match;
1353 match = usb_match_id(intf, blacklist_table);
1354 if (match)
1355 id = match;
1356 }
1357
1358 if (id->driver_info == BTUSB_IGNORE)
1359 return -ENODEV;
1360
1361 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1362 return -ENODEV;
1363
1364 if (ignore_csr && id->driver_info & BTUSB_CSR)
1365 return -ENODEV;
1366
1367 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1368 return -ENODEV;
1369
1370 if (id->driver_info & BTUSB_ATH3012) {
1371 struct usb_device *udev = interface_to_usbdev(intf);
1372
1373 /* Old firmware would otherwise let ath3k driver load
1374 * patch and sysconfig files */
1375 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1376 return -ENODEV;
1377 }
1378
1379 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1380 if (!data)
1381 return -ENOMEM;
1382
1383 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1384 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1385
1386 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1387 data->intr_ep = ep_desc;
1388 continue;
1389 }
1390
1391 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1392 data->bulk_tx_ep = ep_desc;
1393 continue;
1394 }
1395
1396 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1397 data->bulk_rx_ep = ep_desc;
1398 continue;
1399 }
1400 }
1401
1402 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1403 return -ENODEV;
1404
1405 data->cmdreq_type = USB_TYPE_CLASS;
1406
1407 data->udev = interface_to_usbdev(intf);
1408 data->intf = intf;
1409
1410 spin_lock_init(&data->lock);
1411
1412 INIT_WORK(&data->work, btusb_work);
1413 INIT_WORK(&data->waker, btusb_waker);
1414 spin_lock_init(&data->txlock);
1415
1416 init_usb_anchor(&data->tx_anchor);
1417 init_usb_anchor(&data->intr_anchor);
1418 init_usb_anchor(&data->bulk_anchor);
1419 init_usb_anchor(&data->isoc_anchor);
1420 init_usb_anchor(&data->deferred);
1421
1422 hdev = hci_alloc_dev();
1423 if (!hdev)
1424 return -ENOMEM;
1425
1426 hdev->bus = HCI_USB;
1427 hci_set_drvdata(hdev, data);
1428
1429 data->hdev = hdev;
1430
1431 SET_HCIDEV_DEV(hdev, &intf->dev);
1432
1433 hdev->open = btusb_open;
1434 hdev->close = btusb_close;
1435 hdev->flush = btusb_flush;
1436 hdev->send = btusb_send_frame;
1437 hdev->notify = btusb_notify;
1438
1439 if (id->driver_info & BTUSB_BCM92035)
1440 hdev->setup = btusb_setup_bcm92035;
1441
1442 if (id->driver_info & BTUSB_INTEL) {
1443 usb_enable_autosuspend(data->udev);
1444 hdev->setup = btusb_setup_intel;
1445 }
1446
1447 /* Interface numbers are hardcoded in the specification */
1448 data->isoc = usb_ifnum_to_if(data->udev, 1);
1449
1450 if (!reset)
1451 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1452
1453 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1454 if (!disable_scofix)
1455 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1456 }
1457
1458 if (id->driver_info & BTUSB_BROKEN_ISOC)
1459 data->isoc = NULL;
1460
1461 if (id->driver_info & BTUSB_DIGIANSWER) {
1462 data->cmdreq_type = USB_TYPE_VENDOR;
1463 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1464 }
1465
1466 if (id->driver_info & BTUSB_CSR) {
1467 struct usb_device *udev = data->udev;
1468
1469 /* Old firmware would otherwise execute USB reset */
1470 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1471 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1472 }
1473
1474 if (id->driver_info & BTUSB_SNIFFER) {
1475 struct usb_device *udev = data->udev;
1476
1477 /* New sniffer firmware has crippled HCI interface */
1478 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1479 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1480
1481 data->isoc = NULL;
1482 }
1483
1484 if (data->isoc) {
1485 err = usb_driver_claim_interface(&btusb_driver,
1486 data->isoc, data);
1487 if (err < 0) {
1488 hci_free_dev(hdev);
1489 return err;
1490 }
1491 }
1492
1493 err = hci_register_dev(hdev);
1494 if (err < 0) {
1495 hci_free_dev(hdev);
1496 return err;
1497 }
1498
1499 usb_set_intfdata(intf, data);
1500
1501 return 0;
1502 }
1503
1504 static void btusb_disconnect(struct usb_interface *intf)
1505 {
1506 struct btusb_data *data = usb_get_intfdata(intf);
1507 struct hci_dev *hdev;
1508
1509 BT_DBG("intf %p", intf);
1510
1511 if (!data)
1512 return;
1513
1514 hdev = data->hdev;
1515 usb_set_intfdata(data->intf, NULL);
1516
1517 if (data->isoc)
1518 usb_set_intfdata(data->isoc, NULL);
1519
1520 hci_unregister_dev(hdev);
1521
1522 if (intf == data->isoc)
1523 usb_driver_release_interface(&btusb_driver, data->intf);
1524 else if (data->isoc)
1525 usb_driver_release_interface(&btusb_driver, data->isoc);
1526
1527 hci_free_dev(hdev);
1528 }
1529
1530 #ifdef CONFIG_PM
1531 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1532 {
1533 struct btusb_data *data = usb_get_intfdata(intf);
1534
1535 BT_DBG("intf %p", intf);
1536
1537 if (data->suspend_count++)
1538 return 0;
1539
1540 spin_lock_irq(&data->txlock);
1541 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1542 set_bit(BTUSB_SUSPENDING, &data->flags);
1543 spin_unlock_irq(&data->txlock);
1544 } else {
1545 spin_unlock_irq(&data->txlock);
1546 data->suspend_count--;
1547 return -EBUSY;
1548 }
1549
1550 cancel_work_sync(&data->work);
1551
1552 btusb_stop_traffic(data);
1553 usb_kill_anchored_urbs(&data->tx_anchor);
1554
1555 return 0;
1556 }
1557
1558 static void play_deferred(struct btusb_data *data)
1559 {
1560 struct urb *urb;
1561 int err;
1562
1563 while ((urb = usb_get_from_anchor(&data->deferred))) {
1564 err = usb_submit_urb(urb, GFP_ATOMIC);
1565 if (err < 0)
1566 break;
1567
1568 data->tx_in_flight++;
1569 }
1570 usb_scuttle_anchored_urbs(&data->deferred);
1571 }
1572
1573 static int btusb_resume(struct usb_interface *intf)
1574 {
1575 struct btusb_data *data = usb_get_intfdata(intf);
1576 struct hci_dev *hdev = data->hdev;
1577 int err = 0;
1578
1579 BT_DBG("intf %p", intf);
1580
1581 if (--data->suspend_count)
1582 return 0;
1583
1584 if (!test_bit(HCI_RUNNING, &hdev->flags))
1585 goto done;
1586
1587 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1588 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1589 if (err < 0) {
1590 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1591 goto failed;
1592 }
1593 }
1594
1595 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1596 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1597 if (err < 0) {
1598 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1599 goto failed;
1600 }
1601
1602 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1603 }
1604
1605 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1606 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1607 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1608 else
1609 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1610 }
1611
1612 spin_lock_irq(&data->txlock);
1613 play_deferred(data);
1614 clear_bit(BTUSB_SUSPENDING, &data->flags);
1615 spin_unlock_irq(&data->txlock);
1616 schedule_work(&data->work);
1617
1618 return 0;
1619
1620 failed:
1621 usb_scuttle_anchored_urbs(&data->deferred);
1622 done:
1623 spin_lock_irq(&data->txlock);
1624 clear_bit(BTUSB_SUSPENDING, &data->flags);
1625 spin_unlock_irq(&data->txlock);
1626
1627 return err;
1628 }
1629 #endif
1630
1631 static struct usb_driver btusb_driver = {
1632 .name = "btusb",
1633 .probe = btusb_probe,
1634 .disconnect = btusb_disconnect,
1635 #ifdef CONFIG_PM
1636 .suspend = btusb_suspend,
1637 .resume = btusb_resume,
1638 #endif
1639 .id_table = btusb_table,
1640 .supports_autosuspend = 1,
1641 .disable_hub_initiated_lpm = 1,
1642 };
1643
1644 module_usb_driver(btusb_driver);
1645
1646 module_param(ignore_dga, bool, 0644);
1647 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1648
1649 module_param(ignore_csr, bool, 0644);
1650 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1651
1652 module_param(ignore_sniffer, bool, 0644);
1653 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1654
1655 module_param(disable_scofix, bool, 0644);
1656 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1657
1658 module_param(force_scofix, bool, 0644);
1659 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1660
1661 module_param(reset, bool, 0644);
1662 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1663
1664 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1665 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1666 MODULE_VERSION(VERSION);
1667 MODULE_LICENSE("GPL");
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