?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / bluetooth / btusb.c
blobbaeaaed299e4e339ee455833c94c9d7aa24421c4
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 static int btusb_setup_csr(struct hci_dev *hdev)
969 {
970 struct hci_rp_read_local_version *rp;
971 struct sk_buff *skb;
972 int ret;
973
974 BT_DBG("%s", hdev->name);
975
976 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
977 HCI_INIT_TIMEOUT);
978 if (IS_ERR(skb)) {
979 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
980 return -PTR_ERR(skb);
981 }
982
983 rp = (struct hci_rp_read_local_version *) skb->data;
984
985 if (!rp->status) {
986 if (le16_to_cpu(rp->manufacturer) != 10) {
987 /* Clear the reset quirk since this is not an actual
988 * early Bluetooth 1.1 device from CSR.
989 */
990 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
991
992 /* These fake CSR controllers have all a broken
993 * stored link key handling and so just disable it.
994 */
995 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
996 &hdev->quirks);
997 }
998 }
999
1000 ret = -bt_to_errno(rp->status);
1001
1002 kfree_skb(skb);
1003
1004 return ret;
1005 }
1006
1007 struct intel_version {
1008 u8 status;
1009 u8 hw_platform;
1010 u8 hw_variant;
1011 u8 hw_revision;
1012 u8 fw_variant;
1013 u8 fw_revision;
1014 u8 fw_build_num;
1015 u8 fw_build_ww;
1016 u8 fw_build_yy;
1017 u8 fw_patch_num;
1018 } __packed;
1019
1020 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1021 struct intel_version *ver)
1022 {
1023 const struct firmware *fw;
1024 char fwname[64];
1025 int ret;
1026
1027 snprintf(fwname, sizeof(fwname),
1028 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1029 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1030 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1031 ver->fw_build_ww, ver->fw_build_yy);
1032
1033 ret = request_firmware(&fw, fwname, &hdev->dev);
1034 if (ret < 0) {
1035 if (ret == -EINVAL) {
1036 BT_ERR("%s Intel firmware file request failed (%d)",
1037 hdev->name, ret);
1038 return NULL;
1039 }
1040
1041 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1042 hdev->name, fwname, ret);
1043
1044 /* If the correct firmware patch file is not found, use the
1045 * default firmware patch file instead
1046 */
1047 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1048 ver->hw_platform, ver->hw_variant);
1049 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1050 BT_ERR("%s failed to open default Intel fw file: %s",
1051 hdev->name, fwname);
1052 return NULL;
1053 }
1054 }
1055
1056 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1057
1058 return fw;
1059 }
1060
1061 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1062 const struct firmware *fw,
1063 const u8 **fw_ptr, int *disable_patch)
1064 {
1065 struct sk_buff *skb;
1066 struct hci_command_hdr *cmd;
1067 const u8 *cmd_param;
1068 struct hci_event_hdr *evt = NULL;
1069 const u8 *evt_param = NULL;
1070 int remain = fw->size - (*fw_ptr - fw->data);
1071
1072 /* The first byte indicates the types of the patch command or event.
1073 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1074 * in the current firmware buffer doesn't start with 0x01 or
1075 * the size of remain buffer is smaller than HCI command header,
1076 * the firmware file is corrupted and it should stop the patching
1077 * process.
1078 */
1079 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1080 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1081 return -EINVAL;
1082 }
1083 (*fw_ptr)++;
1084 remain--;
1085
1086 cmd = (struct hci_command_hdr *)(*fw_ptr);
1087 *fw_ptr += sizeof(*cmd);
1088 remain -= sizeof(*cmd);
1089
1090 /* Ensure that the remain firmware data is long enough than the length
1091 * of command parameter. If not, the firmware file is corrupted.
1092 */
1093 if (remain < cmd->plen) {
1094 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1095 return -EFAULT;
1096 }
1097
1098 /* If there is a command that loads a patch in the firmware
1099 * file, then enable the patch upon success, otherwise just
1100 * disable the manufacturer mode, for example patch activation
1101 * is not required when the default firmware patch file is used
1102 * because there are no patch data to load.
1103 */
1104 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1105 *disable_patch = 0;
1106
1107 cmd_param = *fw_ptr;
1108 *fw_ptr += cmd->plen;
1109 remain -= cmd->plen;
1110
1111 /* This reads the expected events when the above command is sent to the
1112 * device. Some vendor commands expects more than one events, for
1113 * example command status event followed by vendor specific event.
1114 * For this case, it only keeps the last expected event. so the command
1115 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1116 * last expected event.
1117 */
1118 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1119 (*fw_ptr)++;
1120 remain--;
1121
1122 evt = (struct hci_event_hdr *)(*fw_ptr);
1123 *fw_ptr += sizeof(*evt);
1124 remain -= sizeof(*evt);
1125
1126 if (remain < evt->plen) {
1127 BT_ERR("%s Intel fw corrupted: invalid evt len",
1128 hdev->name);
1129 return -EFAULT;
1130 }
1131
1132 evt_param = *fw_ptr;
1133 *fw_ptr += evt->plen;
1134 remain -= evt->plen;
1135 }
1136
1137 /* Every HCI commands in the firmware file has its correspond event.
1138 * If event is not found or remain is smaller than zero, the firmware
1139 * file is corrupted.
1140 */
1141 if (!evt || !evt_param || remain < 0) {
1142 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1143 return -EFAULT;
1144 }
1145
1146 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1147 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1148 if (IS_ERR(skb)) {
1149 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1150 hdev->name, cmd->opcode, PTR_ERR(skb));
1151 return PTR_ERR(skb);
1152 }
1153
1154 /* It ensures that the returned event matches the event data read from
1155 * the firmware file. At fist, it checks the length and then
1156 * the contents of the event.
1157 */
1158 if (skb->len != evt->plen) {
1159 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1160 le16_to_cpu(cmd->opcode));
1161 kfree_skb(skb);
1162 return -EFAULT;
1163 }
1164
1165 if (memcmp(skb->data, evt_param, evt->plen)) {
1166 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1167 hdev->name, le16_to_cpu(cmd->opcode));
1168 kfree_skb(skb);
1169 return -EFAULT;
1170 }
1171 kfree_skb(skb);
1172
1173 return 0;
1174 }
1175
1176 static int btusb_setup_intel(struct hci_dev *hdev)
1177 {
1178 struct sk_buff *skb;
1179 const struct firmware *fw;
1180 const u8 *fw_ptr;
1181 int disable_patch;
1182 struct intel_version *ver;
1183
1184 const u8 mfg_enable[] = { 0x01, 0x00 };
1185 const u8 mfg_disable[] = { 0x00, 0x00 };
1186 const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1187 const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1188
1189 BT_DBG("%s", hdev->name);
1190
1191 /* The controller has a bug with the first HCI command sent to it
1192 * returning number of completed commands as zero. This would stall the
1193 * command processing in the Bluetooth core.
1194 *
1195 * As a workaround, send HCI Reset command first which will reset the
1196 * number of completed commands and allow normal command processing
1197 * from now on.
1198 */
1199 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1200 if (IS_ERR(skb)) {
1201 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1202 hdev->name, PTR_ERR(skb));
1203 return PTR_ERR(skb);
1204 }
1205 kfree_skb(skb);
1206
1207 /* Read Intel specific controller version first to allow selection of
1208 * which firmware file to load.
1209 *
1210 * The returned information are hardware variant and revision plus
1211 * firmware variant, revision and build number.
1212 */
1213 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1214 if (IS_ERR(skb)) {
1215 BT_ERR("%s reading Intel fw version command failed (%ld)",
1216 hdev->name, PTR_ERR(skb));
1217 return PTR_ERR(skb);
1218 }
1219
1220 if (skb->len != sizeof(*ver)) {
1221 BT_ERR("%s Intel version event length mismatch", hdev->name);
1222 kfree_skb(skb);
1223 return -EIO;
1224 }
1225
1226 ver = (struct intel_version *)skb->data;
1227 if (ver->status) {
1228 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1229 ver->status);
1230 kfree_skb(skb);
1231 return -bt_to_errno(ver->status);
1232 }
1233
1234 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1235 hdev->name, ver->hw_platform, ver->hw_variant,
1236 ver->hw_revision, ver->fw_variant, ver->fw_revision,
1237 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1238 ver->fw_patch_num);
1239
1240 /* fw_patch_num indicates the version of patch the device currently
1241 * have. If there is no patch data in the device, it is always 0x00.
1242 * So, if it is other than 0x00, no need to patch the deivce again.
1243 */
1244 if (ver->fw_patch_num) {
1245 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1246 hdev->name, ver->fw_patch_num);
1247 kfree_skb(skb);
1248 return 0;
1249 }
1250
1251 /* Opens the firmware patch file based on the firmware version read
1252 * from the controller. If it fails to open the matching firmware
1253 * patch file, it tries to open the default firmware patch file.
1254 * If no patch file is found, allow the device to operate without
1255 * a patch.
1256 */
1257 fw = btusb_setup_intel_get_fw(hdev, ver);
1258 if (!fw) {
1259 kfree_skb(skb);
1260 return 0;
1261 }
1262 fw_ptr = fw->data;
1263
1264 /* This Intel specific command enables the manufacturer mode of the
1265 * controller.
1266 *
1267 * Only while this mode is enabled, the driver can download the
1268 * firmware patch data and configuration parameters.
1269 */
1270 skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1271 if (IS_ERR(skb)) {
1272 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1273 hdev->name, PTR_ERR(skb));
1274 release_firmware(fw);
1275 return PTR_ERR(skb);
1276 }
1277
1278 if (skb->data[0]) {
1279 u8 evt_status = skb->data[0];
1280 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1281 hdev->name, evt_status);
1282 kfree_skb(skb);
1283 release_firmware(fw);
1284 return -bt_to_errno(evt_status);
1285 }
1286 kfree_skb(skb);
1287
1288 disable_patch = 1;
1289
1290 /* The firmware data file consists of list of Intel specific HCI
1291 * commands and its expected events. The first byte indicates the
1292 * type of the message, either HCI command or HCI event.
1293 *
1294 * It reads the command and its expected event from the firmware file,
1295 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1296 * the returned event is compared with the event read from the firmware
1297 * file and it will continue until all the messages are downloaded to
1298 * the controller.
1299 *
1300 * Once the firmware patching is completed successfully,
1301 * the manufacturer mode is disabled with reset and activating the
1302 * downloaded patch.
1303 *
1304 * If the firmware patching fails, the manufacturer mode is
1305 * disabled with reset and deactivating the patch.
1306 *
1307 * If the default patch file is used, no reset is done when disabling
1308 * the manufacturer.
1309 */
1310 while (fw->size > fw_ptr - fw->data) {
1311 int ret;
1312
1313 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1314 &disable_patch);
1315 if (ret < 0)
1316 goto exit_mfg_deactivate;
1317 }
1318
1319 release_firmware(fw);
1320
1321 if (disable_patch)
1322 goto exit_mfg_disable;
1323
1324 /* Patching completed successfully and disable the manufacturer mode
1325 * with reset and activate the downloaded firmware patches.
1326 */
1327 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1328 mfg_reset_activate, HCI_INIT_TIMEOUT);
1329 if (IS_ERR(skb)) {
1330 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1331 hdev->name, PTR_ERR(skb));
1332 return PTR_ERR(skb);
1333 }
1334 kfree_skb(skb);
1335
1336 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1337 hdev->name);
1338
1339 return 0;
1340
1341 exit_mfg_disable:
1342 /* Disable the manufacturer mode without reset */
1343 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1344 HCI_INIT_TIMEOUT);
1345 if (IS_ERR(skb)) {
1346 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1347 hdev->name, PTR_ERR(skb));
1348 return PTR_ERR(skb);
1349 }
1350 kfree_skb(skb);
1351
1352 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1353 return 0;
1354
1355 exit_mfg_deactivate:
1356 release_firmware(fw);
1357
1358 /* Patching failed. Disable the manufacturer mode with reset and
1359 * deactivate the downloaded firmware patches.
1360 */
1361 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1362 mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1363 if (IS_ERR(skb)) {
1364 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1365 hdev->name, PTR_ERR(skb));
1366 return PTR_ERR(skb);
1367 }
1368 kfree_skb(skb);
1369
1370 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1371 hdev->name);
1372
1373 return 0;
1374 }
1375
1376 static int btusb_probe(struct usb_interface *intf,
1377 const struct usb_device_id *id)
1378 {
1379 struct usb_endpoint_descriptor *ep_desc;
1380 struct btusb_data *data;
1381 struct hci_dev *hdev;
1382 int i, err;
1383
1384 BT_DBG("intf %p id %p", intf, id);
1385
1386 /* interface numbers are hardcoded in the spec */
1387 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1388 return -ENODEV;
1389
1390 if (!id->driver_info) {
1391 const struct usb_device_id *match;
1392 match = usb_match_id(intf, blacklist_table);
1393 if (match)
1394 id = match;
1395 }
1396
1397 if (id->driver_info == BTUSB_IGNORE)
1398 return -ENODEV;
1399
1400 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1401 return -ENODEV;
1402
1403 if (ignore_csr && id->driver_info & BTUSB_CSR)
1404 return -ENODEV;
1405
1406 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1407 return -ENODEV;
1408
1409 if (id->driver_info & BTUSB_ATH3012) {
1410 struct usb_device *udev = interface_to_usbdev(intf);
1411
1412 /* Old firmware would otherwise let ath3k driver load
1413 * patch and sysconfig files */
1414 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1415 return -ENODEV;
1416 }
1417
1418 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1419 if (!data)
1420 return -ENOMEM;
1421
1422 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1423 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1424
1425 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1426 data->intr_ep = ep_desc;
1427 continue;
1428 }
1429
1430 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1431 data->bulk_tx_ep = ep_desc;
1432 continue;
1433 }
1434
1435 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1436 data->bulk_rx_ep = ep_desc;
1437 continue;
1438 }
1439 }
1440
1441 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1442 return -ENODEV;
1443
1444 data->cmdreq_type = USB_TYPE_CLASS;
1445
1446 data->udev = interface_to_usbdev(intf);
1447 data->intf = intf;
1448
1449 spin_lock_init(&data->lock);
1450
1451 INIT_WORK(&data->work, btusb_work);
1452 INIT_WORK(&data->waker, btusb_waker);
1453 spin_lock_init(&data->txlock);
1454
1455 init_usb_anchor(&data->tx_anchor);
1456 init_usb_anchor(&data->intr_anchor);
1457 init_usb_anchor(&data->bulk_anchor);
1458 init_usb_anchor(&data->isoc_anchor);
1459 init_usb_anchor(&data->deferred);
1460
1461 hdev = hci_alloc_dev();
1462 if (!hdev)
1463 return -ENOMEM;
1464
1465 hdev->bus = HCI_USB;
1466 hci_set_drvdata(hdev, data);
1467
1468 data->hdev = hdev;
1469
1470 SET_HCIDEV_DEV(hdev, &intf->dev);
1471
1472 hdev->open = btusb_open;
1473 hdev->close = btusb_close;
1474 hdev->flush = btusb_flush;
1475 hdev->send = btusb_send_frame;
1476 hdev->notify = btusb_notify;
1477
1478 if (id->driver_info & BTUSB_BCM92035)
1479 hdev->setup = btusb_setup_bcm92035;
1480
1481 if (id->driver_info & BTUSB_INTEL) {
1482 usb_enable_autosuspend(data->udev);
1483 hdev->setup = btusb_setup_intel;
1484 }
1485
1486 /* Interface numbers are hardcoded in the specification */
1487 data->isoc = usb_ifnum_to_if(data->udev, 1);
1488
1489 if (!reset)
1490 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1491
1492 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1493 if (!disable_scofix)
1494 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1495 }
1496
1497 if (id->driver_info & BTUSB_BROKEN_ISOC)
1498 data->isoc = NULL;
1499
1500 if (id->driver_info & BTUSB_DIGIANSWER) {
1501 data->cmdreq_type = USB_TYPE_VENDOR;
1502 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1503 }
1504
1505 if (id->driver_info & BTUSB_CSR) {
1506 struct usb_device *udev = data->udev;
1507 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1508
1509 /* Old firmware would otherwise execute USB reset */
1510 if (bcdDevice < 0x117)
1511 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1512
1513 /* Fake CSR devices with broken commands */
1514 if (bcdDevice <= 0x100)
1515 hdev->setup = btusb_setup_csr;
1516 }
1517
1518 if (id->driver_info & BTUSB_SNIFFER) {
1519 struct usb_device *udev = data->udev;
1520
1521 /* New sniffer firmware has crippled HCI interface */
1522 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1523 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1524
1525 data->isoc = NULL;
1526 }
1527
1528 if (data->isoc) {
1529 err = usb_driver_claim_interface(&btusb_driver,
1530 data->isoc, data);
1531 if (err < 0) {
1532 hci_free_dev(hdev);
1533 return err;
1534 }
1535 }
1536
1537 err = hci_register_dev(hdev);
1538 if (err < 0) {
1539 hci_free_dev(hdev);
1540 return err;
1541 }
1542
1543 usb_set_intfdata(intf, data);
1544
1545 return 0;
1546 }
1547
1548 static void btusb_disconnect(struct usb_interface *intf)
1549 {
1550 struct btusb_data *data = usb_get_intfdata(intf);
1551 struct hci_dev *hdev;
1552
1553 BT_DBG("intf %p", intf);
1554
1555 if (!data)
1556 return;
1557
1558 hdev = data->hdev;
1559 usb_set_intfdata(data->intf, NULL);
1560
1561 if (data->isoc)
1562 usb_set_intfdata(data->isoc, NULL);
1563
1564 hci_unregister_dev(hdev);
1565
1566 if (intf == data->isoc)
1567 usb_driver_release_interface(&btusb_driver, data->intf);
1568 else if (data->isoc)
1569 usb_driver_release_interface(&btusb_driver, data->isoc);
1570
1571 hci_free_dev(hdev);
1572 }
1573
1574 #ifdef CONFIG_PM
1575 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1576 {
1577 struct btusb_data *data = usb_get_intfdata(intf);
1578
1579 BT_DBG("intf %p", intf);
1580
1581 if (data->suspend_count++)
1582 return 0;
1583
1584 spin_lock_irq(&data->txlock);
1585 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1586 set_bit(BTUSB_SUSPENDING, &data->flags);
1587 spin_unlock_irq(&data->txlock);
1588 } else {
1589 spin_unlock_irq(&data->txlock);
1590 data->suspend_count--;
1591 return -EBUSY;
1592 }
1593
1594 cancel_work_sync(&data->work);
1595
1596 btusb_stop_traffic(data);
1597 usb_kill_anchored_urbs(&data->tx_anchor);
1598
1599 return 0;
1600 }
1601
1602 static void play_deferred(struct btusb_data *data)
1603 {
1604 struct urb *urb;
1605 int err;
1606
1607 while ((urb = usb_get_from_anchor(&data->deferred))) {
1608 err = usb_submit_urb(urb, GFP_ATOMIC);
1609 if (err < 0)
1610 break;
1611
1612 data->tx_in_flight++;
1613 }
1614 usb_scuttle_anchored_urbs(&data->deferred);
1615 }
1616
1617 static int btusb_resume(struct usb_interface *intf)
1618 {
1619 struct btusb_data *data = usb_get_intfdata(intf);
1620 struct hci_dev *hdev = data->hdev;
1621 int err = 0;
1622
1623 BT_DBG("intf %p", intf);
1624
1625 if (--data->suspend_count)
1626 return 0;
1627
1628 if (!test_bit(HCI_RUNNING, &hdev->flags))
1629 goto done;
1630
1631 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1632 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1633 if (err < 0) {
1634 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1635 goto failed;
1636 }
1637 }
1638
1639 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1640 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1641 if (err < 0) {
1642 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1643 goto failed;
1644 }
1645
1646 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1647 }
1648
1649 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1650 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1651 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1652 else
1653 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1654 }
1655
1656 spin_lock_irq(&data->txlock);
1657 play_deferred(data);
1658 clear_bit(BTUSB_SUSPENDING, &data->flags);
1659 spin_unlock_irq(&data->txlock);
1660 schedule_work(&data->work);
1661
1662 return 0;
1663
1664 failed:
1665 usb_scuttle_anchored_urbs(&data->deferred);
1666 done:
1667 spin_lock_irq(&data->txlock);
1668 clear_bit(BTUSB_SUSPENDING, &data->flags);
1669 spin_unlock_irq(&data->txlock);
1670
1671 return err;
1672 }
1673 #endif
1674
1675 static struct usb_driver btusb_driver = {
1676 .name = "btusb",
1677 .probe = btusb_probe,
1678 .disconnect = btusb_disconnect,
1679 #ifdef CONFIG_PM
1680 .suspend = btusb_suspend,
1681 .resume = btusb_resume,
1682 #endif
1683 .id_table = btusb_table,
1684 .supports_autosuspend = 1,
1685 .disable_hub_initiated_lpm = 1,
1686 };
1687
1688 module_usb_driver(btusb_driver);
1689
1690 module_param(ignore_dga, bool, 0644);
1691 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1692
1693 module_param(ignore_csr, bool, 0644);
1694 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1695
1696 module_param(ignore_sniffer, bool, 0644);
1697 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1698
1699 module_param(disable_scofix, bool, 0644);
1700 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1701
1702 module_param(force_scofix, bool, 0644);
1703 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1704
1705 module_param(reset, bool, 0644);
1706 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1707
1708 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1709 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1710 MODULE_VERSION(VERSION);
1711 MODULE_LICENSE("GPL");
Linux with added FPC-III support