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mm: Initialize error in shmem_file_aio_read()
[linux/fpc-iii.git] / drivers / bluetooth / btusb.c
blobf338b0c5a8de507a153b6761886b943c702176a4
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(0x0489, 0xe042) },
105 { USB_DEVICE(0x04ca, 0x2003) },
106 { USB_DEVICE(0x0b05, 0x17b5) },
107 { USB_DEVICE(0x0b05, 0x17cb) },
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 /* IMC Networks - Broadcom based */
120 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
121
122 { } /* Terminating entry */
123 };
124
125 MODULE_DEVICE_TABLE(usb, btusb_table);
126
127 static const struct usb_device_id blacklist_table[] = {
128 /* CSR BlueCore devices */
129 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
130
131 /* Broadcom BCM2033 without firmware */
132 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
133
134 /* Atheros 3011 with sflash firmware */
135 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
136 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
137 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
138 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
139 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
140 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
141
142 /* Atheros AR9285 Malbec with sflash firmware */
143 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
144
145 /* Atheros 3012 with sflash firmware */
146 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
147 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
148 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
149 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
150 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
151 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
152 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
153 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
154 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
155 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
156 { USB_DEVICE(0x04ca, 0x300b), .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(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
160 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
161 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
162 { USB_DEVICE(0x0cf3, 0x3005), .driver_info = BTUSB_ATH3012 },
163 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
164 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
165 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
166 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
167 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
168 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
169 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
170 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
171 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
172 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
173 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
174 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
175 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
176
177 /* Atheros AR5BBU12 with sflash firmware */
178 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
179
180 /* Atheros AR5BBU12 with sflash firmware */
181 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
182 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
183
184 /* Broadcom BCM2035 */
185 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
186 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
187 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
188
189 /* Broadcom BCM2045 */
190 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
191 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
192
193 /* IBM/Lenovo ThinkPad with Broadcom chip */
194 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
195 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
196
197 /* HP laptop with Broadcom chip */
198 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
199
200 /* Dell laptop with Broadcom chip */
201 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
202
203 /* Dell Wireless 370 and 410 devices */
204 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
205 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
206
207 /* Belkin F8T012 and F8T013 devices */
208 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
209 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
210
211 /* Asus WL-BTD202 device */
212 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
213
214 /* Kensington Bluetooth USB adapter */
215 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
216
217 /* RTX Telecom based adapters with buggy SCO support */
218 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
219 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
220
221 /* CONWISE Technology based adapters with buggy SCO support */
222 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
223
224 /* Digianswer devices */
225 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
226 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
227
228 /* CSR BlueCore Bluetooth Sniffer */
229 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
230
231 /* Frontline ComProbe Bluetooth Sniffer */
232 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
233
234 /* Intel Bluetooth device */
235 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
236 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
237
238 { } /* Terminating entry */
239 };
240
241 #define BTUSB_MAX_ISOC_FRAMES 10
242
243 #define BTUSB_INTR_RUNNING 0
244 #define BTUSB_BULK_RUNNING 1
245 #define BTUSB_ISOC_RUNNING 2
246 #define BTUSB_SUSPENDING 3
247 #define BTUSB_DID_ISO_RESUME 4
248
249 struct btusb_data {
250 struct hci_dev *hdev;
251 struct usb_device *udev;
252 struct usb_interface *intf;
253 struct usb_interface *isoc;
254
255 spinlock_t lock;
256
257 unsigned long flags;
258
259 struct work_struct work;
260 struct work_struct waker;
261
262 struct usb_anchor tx_anchor;
263 struct usb_anchor intr_anchor;
264 struct usb_anchor bulk_anchor;
265 struct usb_anchor isoc_anchor;
266 struct usb_anchor deferred;
267 int tx_in_flight;
268 spinlock_t txlock;
269
270 struct usb_endpoint_descriptor *intr_ep;
271 struct usb_endpoint_descriptor *bulk_tx_ep;
272 struct usb_endpoint_descriptor *bulk_rx_ep;
273 struct usb_endpoint_descriptor *isoc_tx_ep;
274 struct usb_endpoint_descriptor *isoc_rx_ep;
275
276 __u8 cmdreq_type;
277
278 unsigned int sco_num;
279 int isoc_altsetting;
280 int suspend_count;
281 };
282
283 static int inc_tx(struct btusb_data *data)
284 {
285 unsigned long flags;
286 int rv;
287
288 spin_lock_irqsave(&data->txlock, flags);
289 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
290 if (!rv)
291 data->tx_in_flight++;
292 spin_unlock_irqrestore(&data->txlock, flags);
293
294 return rv;
295 }
296
297 static void btusb_intr_complete(struct urb *urb)
298 {
299 struct hci_dev *hdev = urb->context;
300 struct btusb_data *data = hci_get_drvdata(hdev);
301 int err;
302
303 BT_DBG("%s urb %p status %d count %d", hdev->name,
304 urb, urb->status, urb->actual_length);
305
306 if (!test_bit(HCI_RUNNING, &hdev->flags))
307 return;
308
309 if (urb->status == 0) {
310 hdev->stat.byte_rx += urb->actual_length;
311
312 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
313 urb->transfer_buffer,
314 urb->actual_length) < 0) {
315 BT_ERR("%s corrupted event packet", hdev->name);
316 hdev->stat.err_rx++;
317 }
318 }
319
320 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
321 return;
322
323 usb_mark_last_busy(data->udev);
324 usb_anchor_urb(urb, &data->intr_anchor);
325
326 err = usb_submit_urb(urb, GFP_ATOMIC);
327 if (err < 0) {
328 /* -EPERM: urb is being killed;
329 * -ENODEV: device got disconnected */
330 if (err != -EPERM && err != -ENODEV)
331 BT_ERR("%s urb %p failed to resubmit (%d)",
332 hdev->name, urb, -err);
333 usb_unanchor_urb(urb);
334 }
335 }
336
337 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
338 {
339 struct btusb_data *data = hci_get_drvdata(hdev);
340 struct urb *urb;
341 unsigned char *buf;
342 unsigned int pipe;
343 int err, size;
344
345 BT_DBG("%s", hdev->name);
346
347 if (!data->intr_ep)
348 return -ENODEV;
349
350 urb = usb_alloc_urb(0, mem_flags);
351 if (!urb)
352 return -ENOMEM;
353
354 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
355
356 buf = kmalloc(size, mem_flags);
357 if (!buf) {
358 usb_free_urb(urb);
359 return -ENOMEM;
360 }
361
362 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
363
364 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
365 btusb_intr_complete, hdev,
366 data->intr_ep->bInterval);
367
368 urb->transfer_flags |= URB_FREE_BUFFER;
369
370 usb_anchor_urb(urb, &data->intr_anchor);
371
372 err = usb_submit_urb(urb, mem_flags);
373 if (err < 0) {
374 if (err != -EPERM && err != -ENODEV)
375 BT_ERR("%s urb %p submission failed (%d)",
376 hdev->name, urb, -err);
377 usb_unanchor_urb(urb);
378 }
379
380 usb_free_urb(urb);
381
382 return err;
383 }
384
385 static void btusb_bulk_complete(struct urb *urb)
386 {
387 struct hci_dev *hdev = urb->context;
388 struct btusb_data *data = hci_get_drvdata(hdev);
389 int err;
390
391 BT_DBG("%s urb %p status %d count %d", hdev->name,
392 urb, urb->status, urb->actual_length);
393
394 if (!test_bit(HCI_RUNNING, &hdev->flags))
395 return;
396
397 if (urb->status == 0) {
398 hdev->stat.byte_rx += urb->actual_length;
399
400 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
401 urb->transfer_buffer,
402 urb->actual_length) < 0) {
403 BT_ERR("%s corrupted ACL packet", hdev->name);
404 hdev->stat.err_rx++;
405 }
406 }
407
408 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
409 return;
410
411 usb_anchor_urb(urb, &data->bulk_anchor);
412 usb_mark_last_busy(data->udev);
413
414 err = usb_submit_urb(urb, GFP_ATOMIC);
415 if (err < 0) {
416 /* -EPERM: urb is being killed;
417 * -ENODEV: device got disconnected */
418 if (err != -EPERM && err != -ENODEV)
419 BT_ERR("%s urb %p failed to resubmit (%d)",
420 hdev->name, urb, -err);
421 usb_unanchor_urb(urb);
422 }
423 }
424
425 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
426 {
427 struct btusb_data *data = hci_get_drvdata(hdev);
428 struct urb *urb;
429 unsigned char *buf;
430 unsigned int pipe;
431 int err, size = HCI_MAX_FRAME_SIZE;
432
433 BT_DBG("%s", hdev->name);
434
435 if (!data->bulk_rx_ep)
436 return -ENODEV;
437
438 urb = usb_alloc_urb(0, mem_flags);
439 if (!urb)
440 return -ENOMEM;
441
442 buf = kmalloc(size, mem_flags);
443 if (!buf) {
444 usb_free_urb(urb);
445 return -ENOMEM;
446 }
447
448 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
449
450 usb_fill_bulk_urb(urb, data->udev, pipe,
451 buf, size, btusb_bulk_complete, hdev);
452
453 urb->transfer_flags |= URB_FREE_BUFFER;
454
455 usb_mark_last_busy(data->udev);
456 usb_anchor_urb(urb, &data->bulk_anchor);
457
458 err = usb_submit_urb(urb, mem_flags);
459 if (err < 0) {
460 if (err != -EPERM && err != -ENODEV)
461 BT_ERR("%s urb %p submission failed (%d)",
462 hdev->name, urb, -err);
463 usb_unanchor_urb(urb);
464 }
465
466 usb_free_urb(urb);
467
468 return err;
469 }
470
471 static void btusb_isoc_complete(struct urb *urb)
472 {
473 struct hci_dev *hdev = urb->context;
474 struct btusb_data *data = hci_get_drvdata(hdev);
475 int i, err;
476
477 BT_DBG("%s urb %p status %d count %d", hdev->name,
478 urb, urb->status, urb->actual_length);
479
480 if (!test_bit(HCI_RUNNING, &hdev->flags))
481 return;
482
483 if (urb->status == 0) {
484 for (i = 0; i < urb->number_of_packets; i++) {
485 unsigned int offset = urb->iso_frame_desc[i].offset;
486 unsigned int length = urb->iso_frame_desc[i].actual_length;
487
488 if (urb->iso_frame_desc[i].status)
489 continue;
490
491 hdev->stat.byte_rx += length;
492
493 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
494 urb->transfer_buffer + offset,
495 length) < 0) {
496 BT_ERR("%s corrupted SCO packet", hdev->name);
497 hdev->stat.err_rx++;
498 }
499 }
500 }
501
502 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
503 return;
504
505 usb_anchor_urb(urb, &data->isoc_anchor);
506
507 err = usb_submit_urb(urb, GFP_ATOMIC);
508 if (err < 0) {
509 /* -EPERM: urb is being killed;
510 * -ENODEV: device got disconnected */
511 if (err != -EPERM && err != -ENODEV)
512 BT_ERR("%s urb %p failed to resubmit (%d)",
513 hdev->name, urb, -err);
514 usb_unanchor_urb(urb);
515 }
516 }
517
518 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
519 {
520 int i, offset = 0;
521
522 BT_DBG("len %d mtu %d", len, mtu);
523
524 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
525 i++, offset += mtu, len -= mtu) {
526 urb->iso_frame_desc[i].offset = offset;
527 urb->iso_frame_desc[i].length = mtu;
528 }
529
530 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
531 urb->iso_frame_desc[i].offset = offset;
532 urb->iso_frame_desc[i].length = len;
533 i++;
534 }
535
536 urb->number_of_packets = i;
537 }
538
539 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
540 {
541 struct btusb_data *data = hci_get_drvdata(hdev);
542 struct urb *urb;
543 unsigned char *buf;
544 unsigned int pipe;
545 int err, size;
546
547 BT_DBG("%s", hdev->name);
548
549 if (!data->isoc_rx_ep)
550 return -ENODEV;
551
552 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
553 if (!urb)
554 return -ENOMEM;
555
556 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
557 BTUSB_MAX_ISOC_FRAMES;
558
559 buf = kmalloc(size, mem_flags);
560 if (!buf) {
561 usb_free_urb(urb);
562 return -ENOMEM;
563 }
564
565 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
566
567 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
568 hdev, data->isoc_rx_ep->bInterval);
569
570 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
571
572 __fill_isoc_descriptor(urb, size,
573 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
574
575 usb_anchor_urb(urb, &data->isoc_anchor);
576
577 err = usb_submit_urb(urb, mem_flags);
578 if (err < 0) {
579 if (err != -EPERM && err != -ENODEV)
580 BT_ERR("%s urb %p submission failed (%d)",
581 hdev->name, urb, -err);
582 usb_unanchor_urb(urb);
583 }
584
585 usb_free_urb(urb);
586
587 return err;
588 }
589
590 static void btusb_tx_complete(struct urb *urb)
591 {
592 struct sk_buff *skb = urb->context;
593 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
594 struct btusb_data *data = hci_get_drvdata(hdev);
595
596 BT_DBG("%s urb %p status %d count %d", hdev->name,
597 urb, urb->status, urb->actual_length);
598
599 if (!test_bit(HCI_RUNNING, &hdev->flags))
600 goto done;
601
602 if (!urb->status)
603 hdev->stat.byte_tx += urb->transfer_buffer_length;
604 else
605 hdev->stat.err_tx++;
606
607 done:
608 spin_lock(&data->txlock);
609 data->tx_in_flight--;
610 spin_unlock(&data->txlock);
611
612 kfree(urb->setup_packet);
613
614 kfree_skb(skb);
615 }
616
617 static void btusb_isoc_tx_complete(struct urb *urb)
618 {
619 struct sk_buff *skb = urb->context;
620 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
621
622 BT_DBG("%s urb %p status %d count %d", hdev->name,
623 urb, urb->status, urb->actual_length);
624
625 if (!test_bit(HCI_RUNNING, &hdev->flags))
626 goto done;
627
628 if (!urb->status)
629 hdev->stat.byte_tx += urb->transfer_buffer_length;
630 else
631 hdev->stat.err_tx++;
632
633 done:
634 kfree(urb->setup_packet);
635
636 kfree_skb(skb);
637 }
638
639 static int btusb_open(struct hci_dev *hdev)
640 {
641 struct btusb_data *data = hci_get_drvdata(hdev);
642 int err;
643
644 BT_DBG("%s", hdev->name);
645
646 err = usb_autopm_get_interface(data->intf);
647 if (err < 0)
648 return err;
649
650 data->intf->needs_remote_wakeup = 1;
651
652 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
653 goto done;
654
655 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
656 goto done;
657
658 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
659 if (err < 0)
660 goto failed;
661
662 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
663 if (err < 0) {
664 usb_kill_anchored_urbs(&data->intr_anchor);
665 goto failed;
666 }
667
668 set_bit(BTUSB_BULK_RUNNING, &data->flags);
669 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
670
671 done:
672 usb_autopm_put_interface(data->intf);
673 return 0;
674
675 failed:
676 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
677 clear_bit(HCI_RUNNING, &hdev->flags);
678 usb_autopm_put_interface(data->intf);
679 return err;
680 }
681
682 static void btusb_stop_traffic(struct btusb_data *data)
683 {
684 usb_kill_anchored_urbs(&data->intr_anchor);
685 usb_kill_anchored_urbs(&data->bulk_anchor);
686 usb_kill_anchored_urbs(&data->isoc_anchor);
687 }
688
689 static int btusb_close(struct hci_dev *hdev)
690 {
691 struct btusb_data *data = hci_get_drvdata(hdev);
692 int err;
693
694 BT_DBG("%s", hdev->name);
695
696 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
697 return 0;
698
699 cancel_work_sync(&data->work);
700 cancel_work_sync(&data->waker);
701
702 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
703 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
704 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
705
706 btusb_stop_traffic(data);
707 err = usb_autopm_get_interface(data->intf);
708 if (err < 0)
709 goto failed;
710
711 data->intf->needs_remote_wakeup = 0;
712 usb_autopm_put_interface(data->intf);
713
714 failed:
715 usb_scuttle_anchored_urbs(&data->deferred);
716 return 0;
717 }
718
719 static int btusb_flush(struct hci_dev *hdev)
720 {
721 struct btusb_data *data = hci_get_drvdata(hdev);
722
723 BT_DBG("%s", hdev->name);
724
725 usb_kill_anchored_urbs(&data->tx_anchor);
726
727 return 0;
728 }
729
730 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
731 {
732 struct btusb_data *data = hci_get_drvdata(hdev);
733 struct usb_ctrlrequest *dr;
734 struct urb *urb;
735 unsigned int pipe;
736 int err;
737
738 BT_DBG("%s", hdev->name);
739
740 if (!test_bit(HCI_RUNNING, &hdev->flags))
741 return -EBUSY;
742
743 skb->dev = (void *) hdev;
744
745 switch (bt_cb(skb)->pkt_type) {
746 case HCI_COMMAND_PKT:
747 urb = usb_alloc_urb(0, GFP_ATOMIC);
748 if (!urb)
749 return -ENOMEM;
750
751 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
752 if (!dr) {
753 usb_free_urb(urb);
754 return -ENOMEM;
755 }
756
757 dr->bRequestType = data->cmdreq_type;
758 dr->bRequest = 0;
759 dr->wIndex = 0;
760 dr->wValue = 0;
761 dr->wLength = __cpu_to_le16(skb->len);
762
763 pipe = usb_sndctrlpipe(data->udev, 0x00);
764
765 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
766 skb->data, skb->len, btusb_tx_complete, skb);
767
768 hdev->stat.cmd_tx++;
769 break;
770
771 case HCI_ACLDATA_PKT:
772 if (!data->bulk_tx_ep)
773 return -ENODEV;
774
775 urb = usb_alloc_urb(0, GFP_ATOMIC);
776 if (!urb)
777 return -ENOMEM;
778
779 pipe = usb_sndbulkpipe(data->udev,
780 data->bulk_tx_ep->bEndpointAddress);
781
782 usb_fill_bulk_urb(urb, data->udev, pipe,
783 skb->data, skb->len, btusb_tx_complete, skb);
784
785 hdev->stat.acl_tx++;
786 break;
787
788 case HCI_SCODATA_PKT:
789 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
790 return -ENODEV;
791
792 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
793 if (!urb)
794 return -ENOMEM;
795
796 pipe = usb_sndisocpipe(data->udev,
797 data->isoc_tx_ep->bEndpointAddress);
798
799 usb_fill_int_urb(urb, data->udev, pipe,
800 skb->data, skb->len, btusb_isoc_tx_complete,
801 skb, data->isoc_tx_ep->bInterval);
802
803 urb->transfer_flags = URB_ISO_ASAP;
804
805 __fill_isoc_descriptor(urb, skb->len,
806 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
807
808 hdev->stat.sco_tx++;
809 goto skip_waking;
810
811 default:
812 return -EILSEQ;
813 }
814
815 err = inc_tx(data);
816 if (err) {
817 usb_anchor_urb(urb, &data->deferred);
818 schedule_work(&data->waker);
819 err = 0;
820 goto done;
821 }
822
823 skip_waking:
824 usb_anchor_urb(urb, &data->tx_anchor);
825
826 err = usb_submit_urb(urb, GFP_ATOMIC);
827 if (err < 0) {
828 if (err != -EPERM && err != -ENODEV)
829 BT_ERR("%s urb %p submission failed (%d)",
830 hdev->name, urb, -err);
831 kfree(urb->setup_packet);
832 usb_unanchor_urb(urb);
833 } else {
834 usb_mark_last_busy(data->udev);
835 }
836
837 done:
838 usb_free_urb(urb);
839 return err;
840 }
841
842 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
843 {
844 struct btusb_data *data = hci_get_drvdata(hdev);
845
846 BT_DBG("%s evt %d", hdev->name, evt);
847
848 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
849 data->sco_num = hci_conn_num(hdev, SCO_LINK);
850 schedule_work(&data->work);
851 }
852 }
853
854 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
855 {
856 struct btusb_data *data = hci_get_drvdata(hdev);
857 struct usb_interface *intf = data->isoc;
858 struct usb_endpoint_descriptor *ep_desc;
859 int i, err;
860
861 if (!data->isoc)
862 return -ENODEV;
863
864 err = usb_set_interface(data->udev, 1, altsetting);
865 if (err < 0) {
866 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
867 return err;
868 }
869
870 data->isoc_altsetting = altsetting;
871
872 data->isoc_tx_ep = NULL;
873 data->isoc_rx_ep = NULL;
874
875 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
876 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
877
878 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
879 data->isoc_tx_ep = ep_desc;
880 continue;
881 }
882
883 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
884 data->isoc_rx_ep = ep_desc;
885 continue;
886 }
887 }
888
889 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
890 BT_ERR("%s invalid SCO descriptors", hdev->name);
891 return -ENODEV;
892 }
893
894 return 0;
895 }
896
897 static void btusb_work(struct work_struct *work)
898 {
899 struct btusb_data *data = container_of(work, struct btusb_data, work);
900 struct hci_dev *hdev = data->hdev;
901 int new_alts;
902 int err;
903
904 if (data->sco_num > 0) {
905 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
906 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
907 if (err < 0) {
908 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
909 usb_kill_anchored_urbs(&data->isoc_anchor);
910 return;
911 }
912
913 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
914 }
915
916 if (hdev->voice_setting & 0x0020) {
917 static const int alts[3] = { 2, 4, 5 };
918 new_alts = alts[data->sco_num - 1];
919 } else {
920 new_alts = data->sco_num;
921 }
922
923 if (data->isoc_altsetting != new_alts) {
924 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
925 usb_kill_anchored_urbs(&data->isoc_anchor);
926
927 if (__set_isoc_interface(hdev, new_alts) < 0)
928 return;
929 }
930
931 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
932 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
933 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
934 else
935 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
936 }
937 } else {
938 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
939 usb_kill_anchored_urbs(&data->isoc_anchor);
940
941 __set_isoc_interface(hdev, 0);
942 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
943 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
944 }
945 }
946
947 static void btusb_waker(struct work_struct *work)
948 {
949 struct btusb_data *data = container_of(work, struct btusb_data, waker);
950 int err;
951
952 err = usb_autopm_get_interface(data->intf);
953 if (err < 0)
954 return;
955
956 usb_autopm_put_interface(data->intf);
957 }
958
959 static int btusb_setup_bcm92035(struct hci_dev *hdev)
960 {
961 struct sk_buff *skb;
962 u8 val = 0x00;
963
964 BT_DBG("%s", hdev->name);
965
966 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
967 if (IS_ERR(skb))
968 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
969 else
970 kfree_skb(skb);
971
972 return 0;
973 }
974
975 static int btusb_setup_csr(struct hci_dev *hdev)
976 {
977 struct hci_rp_read_local_version *rp;
978 struct sk_buff *skb;
979 int ret;
980
981 BT_DBG("%s", hdev->name);
982
983 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
984 HCI_INIT_TIMEOUT);
985 if (IS_ERR(skb)) {
986 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
987 return -PTR_ERR(skb);
988 }
989
990 rp = (struct hci_rp_read_local_version *) skb->data;
991
992 if (!rp->status) {
993 if (le16_to_cpu(rp->manufacturer) != 10) {
994 /* Clear the reset quirk since this is not an actual
995 * early Bluetooth 1.1 device from CSR.
996 */
997 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
998
999 /* These fake CSR controllers have all a broken
1000 * stored link key handling and so just disable it.
1001 */
1002 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1003 &hdev->quirks);
1004 }
1005 }
1006
1007 ret = -bt_to_errno(rp->status);
1008
1009 kfree_skb(skb);
1010
1011 return ret;
1012 }
1013
1014 struct intel_version {
1015 u8 status;
1016 u8 hw_platform;
1017 u8 hw_variant;
1018 u8 hw_revision;
1019 u8 fw_variant;
1020 u8 fw_revision;
1021 u8 fw_build_num;
1022 u8 fw_build_ww;
1023 u8 fw_build_yy;
1024 u8 fw_patch_num;
1025 } __packed;
1026
1027 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1028 struct intel_version *ver)
1029 {
1030 const struct firmware *fw;
1031 char fwname[64];
1032 int ret;
1033
1034 snprintf(fwname, sizeof(fwname),
1035 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1036 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1037 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1038 ver->fw_build_ww, ver->fw_build_yy);
1039
1040 ret = request_firmware(&fw, fwname, &hdev->dev);
1041 if (ret < 0) {
1042 if (ret == -EINVAL) {
1043 BT_ERR("%s Intel firmware file request failed (%d)",
1044 hdev->name, ret);
1045 return NULL;
1046 }
1047
1048 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1049 hdev->name, fwname, ret);
1050
1051 /* If the correct firmware patch file is not found, use the
1052 * default firmware patch file instead
1053 */
1054 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1055 ver->hw_platform, ver->hw_variant);
1056 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1057 BT_ERR("%s failed to open default Intel fw file: %s",
1058 hdev->name, fwname);
1059 return NULL;
1060 }
1061 }
1062
1063 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1064
1065 return fw;
1066 }
1067
1068 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1069 const struct firmware *fw,
1070 const u8 **fw_ptr, int *disable_patch)
1071 {
1072 struct sk_buff *skb;
1073 struct hci_command_hdr *cmd;
1074 const u8 *cmd_param;
1075 struct hci_event_hdr *evt = NULL;
1076 const u8 *evt_param = NULL;
1077 int remain = fw->size - (*fw_ptr - fw->data);
1078
1079 /* The first byte indicates the types of the patch command or event.
1080 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1081 * in the current firmware buffer doesn't start with 0x01 or
1082 * the size of remain buffer is smaller than HCI command header,
1083 * the firmware file is corrupted and it should stop the patching
1084 * process.
1085 */
1086 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1087 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1088 return -EINVAL;
1089 }
1090 (*fw_ptr)++;
1091 remain--;
1092
1093 cmd = (struct hci_command_hdr *)(*fw_ptr);
1094 *fw_ptr += sizeof(*cmd);
1095 remain -= sizeof(*cmd);
1096
1097 /* Ensure that the remain firmware data is long enough than the length
1098 * of command parameter. If not, the firmware file is corrupted.
1099 */
1100 if (remain < cmd->plen) {
1101 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1102 return -EFAULT;
1103 }
1104
1105 /* If there is a command that loads a patch in the firmware
1106 * file, then enable the patch upon success, otherwise just
1107 * disable the manufacturer mode, for example patch activation
1108 * is not required when the default firmware patch file is used
1109 * because there are no patch data to load.
1110 */
1111 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1112 *disable_patch = 0;
1113
1114 cmd_param = *fw_ptr;
1115 *fw_ptr += cmd->plen;
1116 remain -= cmd->plen;
1117
1118 /* This reads the expected events when the above command is sent to the
1119 * device. Some vendor commands expects more than one events, for
1120 * example command status event followed by vendor specific event.
1121 * For this case, it only keeps the last expected event. so the command
1122 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1123 * last expected event.
1124 */
1125 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1126 (*fw_ptr)++;
1127 remain--;
1128
1129 evt = (struct hci_event_hdr *)(*fw_ptr);
1130 *fw_ptr += sizeof(*evt);
1131 remain -= sizeof(*evt);
1132
1133 if (remain < evt->plen) {
1134 BT_ERR("%s Intel fw corrupted: invalid evt len",
1135 hdev->name);
1136 return -EFAULT;
1137 }
1138
1139 evt_param = *fw_ptr;
1140 *fw_ptr += evt->plen;
1141 remain -= evt->plen;
1142 }
1143
1144 /* Every HCI commands in the firmware file has its correspond event.
1145 * If event is not found or remain is smaller than zero, the firmware
1146 * file is corrupted.
1147 */
1148 if (!evt || !evt_param || remain < 0) {
1149 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1150 return -EFAULT;
1151 }
1152
1153 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1154 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1155 if (IS_ERR(skb)) {
1156 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1157 hdev->name, cmd->opcode, PTR_ERR(skb));
1158 return PTR_ERR(skb);
1159 }
1160
1161 /* It ensures that the returned event matches the event data read from
1162 * the firmware file. At fist, it checks the length and then
1163 * the contents of the event.
1164 */
1165 if (skb->len != evt->plen) {
1166 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1167 le16_to_cpu(cmd->opcode));
1168 kfree_skb(skb);
1169 return -EFAULT;
1170 }
1171
1172 if (memcmp(skb->data, evt_param, evt->plen)) {
1173 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1174 hdev->name, le16_to_cpu(cmd->opcode));
1175 kfree_skb(skb);
1176 return -EFAULT;
1177 }
1178 kfree_skb(skb);
1179
1180 return 0;
1181 }
1182
1183 static int btusb_setup_intel(struct hci_dev *hdev)
1184 {
1185 struct sk_buff *skb;
1186 const struct firmware *fw;
1187 const u8 *fw_ptr;
1188 int disable_patch;
1189 struct intel_version *ver;
1190
1191 const u8 mfg_enable[] = { 0x01, 0x00 };
1192 const u8 mfg_disable[] = { 0x00, 0x00 };
1193 const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1194 const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1195
1196 BT_DBG("%s", hdev->name);
1197
1198 /* The controller has a bug with the first HCI command sent to it
1199 * returning number of completed commands as zero. This would stall the
1200 * command processing in the Bluetooth core.
1201 *
1202 * As a workaround, send HCI Reset command first which will reset the
1203 * number of completed commands and allow normal command processing
1204 * from now on.
1205 */
1206 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1207 if (IS_ERR(skb)) {
1208 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1209 hdev->name, PTR_ERR(skb));
1210 return PTR_ERR(skb);
1211 }
1212 kfree_skb(skb);
1213
1214 /* Read Intel specific controller version first to allow selection of
1215 * which firmware file to load.
1216 *
1217 * The returned information are hardware variant and revision plus
1218 * firmware variant, revision and build number.
1219 */
1220 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1221 if (IS_ERR(skb)) {
1222 BT_ERR("%s reading Intel fw version command failed (%ld)",
1223 hdev->name, PTR_ERR(skb));
1224 return PTR_ERR(skb);
1225 }
1226
1227 if (skb->len != sizeof(*ver)) {
1228 BT_ERR("%s Intel version event length mismatch", hdev->name);
1229 kfree_skb(skb);
1230 return -EIO;
1231 }
1232
1233 ver = (struct intel_version *)skb->data;
1234 if (ver->status) {
1235 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1236 ver->status);
1237 kfree_skb(skb);
1238 return -bt_to_errno(ver->status);
1239 }
1240
1241 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1242 hdev->name, ver->hw_platform, ver->hw_variant,
1243 ver->hw_revision, ver->fw_variant, ver->fw_revision,
1244 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1245 ver->fw_patch_num);
1246
1247 /* fw_patch_num indicates the version of patch the device currently
1248 * have. If there is no patch data in the device, it is always 0x00.
1249 * So, if it is other than 0x00, no need to patch the deivce again.
1250 */
1251 if (ver->fw_patch_num) {
1252 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1253 hdev->name, ver->fw_patch_num);
1254 kfree_skb(skb);
1255 return 0;
1256 }
1257
1258 /* Opens the firmware patch file based on the firmware version read
1259 * from the controller. If it fails to open the matching firmware
1260 * patch file, it tries to open the default firmware patch file.
1261 * If no patch file is found, allow the device to operate without
1262 * a patch.
1263 */
1264 fw = btusb_setup_intel_get_fw(hdev, ver);
1265 if (!fw) {
1266 kfree_skb(skb);
1267 return 0;
1268 }
1269 fw_ptr = fw->data;
1270
1271 /* This Intel specific command enables the manufacturer mode of the
1272 * controller.
1273 *
1274 * Only while this mode is enabled, the driver can download the
1275 * firmware patch data and configuration parameters.
1276 */
1277 skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1278 if (IS_ERR(skb)) {
1279 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1280 hdev->name, PTR_ERR(skb));
1281 release_firmware(fw);
1282 return PTR_ERR(skb);
1283 }
1284
1285 if (skb->data[0]) {
1286 u8 evt_status = skb->data[0];
1287 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1288 hdev->name, evt_status);
1289 kfree_skb(skb);
1290 release_firmware(fw);
1291 return -bt_to_errno(evt_status);
1292 }
1293 kfree_skb(skb);
1294
1295 disable_patch = 1;
1296
1297 /* The firmware data file consists of list of Intel specific HCI
1298 * commands and its expected events. The first byte indicates the
1299 * type of the message, either HCI command or HCI event.
1300 *
1301 * It reads the command and its expected event from the firmware file,
1302 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1303 * the returned event is compared with the event read from the firmware
1304 * file and it will continue until all the messages are downloaded to
1305 * the controller.
1306 *
1307 * Once the firmware patching is completed successfully,
1308 * the manufacturer mode is disabled with reset and activating the
1309 * downloaded patch.
1310 *
1311 * If the firmware patching fails, the manufacturer mode is
1312 * disabled with reset and deactivating the patch.
1313 *
1314 * If the default patch file is used, no reset is done when disabling
1315 * the manufacturer.
1316 */
1317 while (fw->size > fw_ptr - fw->data) {
1318 int ret;
1319
1320 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1321 &disable_patch);
1322 if (ret < 0)
1323 goto exit_mfg_deactivate;
1324 }
1325
1326 release_firmware(fw);
1327
1328 if (disable_patch)
1329 goto exit_mfg_disable;
1330
1331 /* Patching completed successfully and disable the manufacturer mode
1332 * with reset and activate the downloaded firmware patches.
1333 */
1334 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1335 mfg_reset_activate, HCI_INIT_TIMEOUT);
1336 if (IS_ERR(skb)) {
1337 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1338 hdev->name, PTR_ERR(skb));
1339 return PTR_ERR(skb);
1340 }
1341 kfree_skb(skb);
1342
1343 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1344 hdev->name);
1345
1346 return 0;
1347
1348 exit_mfg_disable:
1349 /* Disable the manufacturer mode without reset */
1350 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1351 HCI_INIT_TIMEOUT);
1352 if (IS_ERR(skb)) {
1353 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1354 hdev->name, PTR_ERR(skb));
1355 return PTR_ERR(skb);
1356 }
1357 kfree_skb(skb);
1358
1359 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1360 return 0;
1361
1362 exit_mfg_deactivate:
1363 release_firmware(fw);
1364
1365 /* Patching failed. Disable the manufacturer mode with reset and
1366 * deactivate the downloaded firmware patches.
1367 */
1368 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1369 mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1370 if (IS_ERR(skb)) {
1371 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1372 hdev->name, PTR_ERR(skb));
1373 return PTR_ERR(skb);
1374 }
1375 kfree_skb(skb);
1376
1377 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1378 hdev->name);
1379
1380 return 0;
1381 }
1382
1383 static int btusb_probe(struct usb_interface *intf,
1384 const struct usb_device_id *id)
1385 {
1386 struct usb_endpoint_descriptor *ep_desc;
1387 struct btusb_data *data;
1388 struct hci_dev *hdev;
1389 int i, err;
1390
1391 BT_DBG("intf %p id %p", intf, id);
1392
1393 /* interface numbers are hardcoded in the spec */
1394 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1395 return -ENODEV;
1396
1397 if (!id->driver_info) {
1398 const struct usb_device_id *match;
1399 match = usb_match_id(intf, blacklist_table);
1400 if (match)
1401 id = match;
1402 }
1403
1404 if (id->driver_info == BTUSB_IGNORE)
1405 return -ENODEV;
1406
1407 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1408 return -ENODEV;
1409
1410 if (ignore_csr && id->driver_info & BTUSB_CSR)
1411 return -ENODEV;
1412
1413 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1414 return -ENODEV;
1415
1416 if (id->driver_info & BTUSB_ATH3012) {
1417 struct usb_device *udev = interface_to_usbdev(intf);
1418
1419 /* Old firmware would otherwise let ath3k driver load
1420 * patch and sysconfig files */
1421 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1422 return -ENODEV;
1423 }
1424
1425 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1426 if (!data)
1427 return -ENOMEM;
1428
1429 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1430 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1431
1432 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1433 data->intr_ep = ep_desc;
1434 continue;
1435 }
1436
1437 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1438 data->bulk_tx_ep = ep_desc;
1439 continue;
1440 }
1441
1442 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1443 data->bulk_rx_ep = ep_desc;
1444 continue;
1445 }
1446 }
1447
1448 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1449 return -ENODEV;
1450
1451 data->cmdreq_type = USB_TYPE_CLASS;
1452
1453 data->udev = interface_to_usbdev(intf);
1454 data->intf = intf;
1455
1456 spin_lock_init(&data->lock);
1457
1458 INIT_WORK(&data->work, btusb_work);
1459 INIT_WORK(&data->waker, btusb_waker);
1460 spin_lock_init(&data->txlock);
1461
1462 init_usb_anchor(&data->tx_anchor);
1463 init_usb_anchor(&data->intr_anchor);
1464 init_usb_anchor(&data->bulk_anchor);
1465 init_usb_anchor(&data->isoc_anchor);
1466 init_usb_anchor(&data->deferred);
1467
1468 hdev = hci_alloc_dev();
1469 if (!hdev)
1470 return -ENOMEM;
1471
1472 hdev->bus = HCI_USB;
1473 hci_set_drvdata(hdev, data);
1474
1475 data->hdev = hdev;
1476
1477 SET_HCIDEV_DEV(hdev, &intf->dev);
1478
1479 hdev->open = btusb_open;
1480 hdev->close = btusb_close;
1481 hdev->flush = btusb_flush;
1482 hdev->send = btusb_send_frame;
1483 hdev->notify = btusb_notify;
1484
1485 if (id->driver_info & BTUSB_BCM92035)
1486 hdev->setup = btusb_setup_bcm92035;
1487
1488 if (id->driver_info & BTUSB_INTEL) {
1489 usb_enable_autosuspend(data->udev);
1490 hdev->setup = btusb_setup_intel;
1491 }
1492
1493 /* Interface numbers are hardcoded in the specification */
1494 data->isoc = usb_ifnum_to_if(data->udev, 1);
1495
1496 if (!reset)
1497 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1498
1499 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1500 if (!disable_scofix)
1501 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1502 }
1503
1504 if (id->driver_info & BTUSB_BROKEN_ISOC)
1505 data->isoc = NULL;
1506
1507 if (id->driver_info & BTUSB_DIGIANSWER) {
1508 data->cmdreq_type = USB_TYPE_VENDOR;
1509 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1510 }
1511
1512 if (id->driver_info & BTUSB_CSR) {
1513 struct usb_device *udev = data->udev;
1514 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1515
1516 /* Old firmware would otherwise execute USB reset */
1517 if (bcdDevice < 0x117)
1518 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1519
1520 /* Fake CSR devices with broken commands */
1521 if (bcdDevice <= 0x100)
1522 hdev->setup = btusb_setup_csr;
1523 }
1524
1525 if (id->driver_info & BTUSB_SNIFFER) {
1526 struct usb_device *udev = data->udev;
1527
1528 /* New sniffer firmware has crippled HCI interface */
1529 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1530 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1531
1532 data->isoc = NULL;
1533 }
1534
1535 if (data->isoc) {
1536 err = usb_driver_claim_interface(&btusb_driver,
1537 data->isoc, data);
1538 if (err < 0) {
1539 hci_free_dev(hdev);
1540 return err;
1541 }
1542 }
1543
1544 err = hci_register_dev(hdev);
1545 if (err < 0) {
1546 hci_free_dev(hdev);
1547 return err;
1548 }
1549
1550 usb_set_intfdata(intf, data);
1551
1552 return 0;
1553 }
1554
1555 static void btusb_disconnect(struct usb_interface *intf)
1556 {
1557 struct btusb_data *data = usb_get_intfdata(intf);
1558 struct hci_dev *hdev;
1559
1560 BT_DBG("intf %p", intf);
1561
1562 if (!data)
1563 return;
1564
1565 hdev = data->hdev;
1566 usb_set_intfdata(data->intf, NULL);
1567
1568 if (data->isoc)
1569 usb_set_intfdata(data->isoc, NULL);
1570
1571 hci_unregister_dev(hdev);
1572
1573 if (intf == data->isoc)
1574 usb_driver_release_interface(&btusb_driver, data->intf);
1575 else if (data->isoc)
1576 usb_driver_release_interface(&btusb_driver, data->isoc);
1577
1578 hci_free_dev(hdev);
1579 }
1580
1581 #ifdef CONFIG_PM
1582 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1583 {
1584 struct btusb_data *data = usb_get_intfdata(intf);
1585
1586 BT_DBG("intf %p", intf);
1587
1588 if (data->suspend_count++)
1589 return 0;
1590
1591 spin_lock_irq(&data->txlock);
1592 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1593 set_bit(BTUSB_SUSPENDING, &data->flags);
1594 spin_unlock_irq(&data->txlock);
1595 } else {
1596 spin_unlock_irq(&data->txlock);
1597 data->suspend_count--;
1598 return -EBUSY;
1599 }
1600
1601 cancel_work_sync(&data->work);
1602
1603 btusb_stop_traffic(data);
1604 usb_kill_anchored_urbs(&data->tx_anchor);
1605
1606 return 0;
1607 }
1608
1609 static void play_deferred(struct btusb_data *data)
1610 {
1611 struct urb *urb;
1612 int err;
1613
1614 while ((urb = usb_get_from_anchor(&data->deferred))) {
1615 err = usb_submit_urb(urb, GFP_ATOMIC);
1616 if (err < 0)
1617 break;
1618
1619 data->tx_in_flight++;
1620 }
1621 usb_scuttle_anchored_urbs(&data->deferred);
1622 }
1623
1624 static int btusb_resume(struct usb_interface *intf)
1625 {
1626 struct btusb_data *data = usb_get_intfdata(intf);
1627 struct hci_dev *hdev = data->hdev;
1628 int err = 0;
1629
1630 BT_DBG("intf %p", intf);
1631
1632 if (--data->suspend_count)
1633 return 0;
1634
1635 if (!test_bit(HCI_RUNNING, &hdev->flags))
1636 goto done;
1637
1638 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1639 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1640 if (err < 0) {
1641 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1642 goto failed;
1643 }
1644 }
1645
1646 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1647 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1648 if (err < 0) {
1649 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1650 goto failed;
1651 }
1652
1653 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1654 }
1655
1656 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1657 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1658 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1659 else
1660 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1661 }
1662
1663 spin_lock_irq(&data->txlock);
1664 play_deferred(data);
1665 clear_bit(BTUSB_SUSPENDING, &data->flags);
1666 spin_unlock_irq(&data->txlock);
1667 schedule_work(&data->work);
1668
1669 return 0;
1670
1671 failed:
1672 usb_scuttle_anchored_urbs(&data->deferred);
1673 done:
1674 spin_lock_irq(&data->txlock);
1675 clear_bit(BTUSB_SUSPENDING, &data->flags);
1676 spin_unlock_irq(&data->txlock);
1677
1678 return err;
1679 }
1680 #endif
1681
1682 static struct usb_driver btusb_driver = {
1683 .name = "btusb",
1684 .probe = btusb_probe,
1685 .disconnect = btusb_disconnect,
1686 #ifdef CONFIG_PM
1687 .suspend = btusb_suspend,
1688 .resume = btusb_resume,
1689 #endif
1690 .id_table = btusb_table,
1691 .supports_autosuspend = 1,
1692 .disable_hub_initiated_lpm = 1,
1693 };
1694
1695 module_usb_driver(btusb_driver);
1696
1697 module_param(ignore_dga, bool, 0644);
1698 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1699
1700 module_param(ignore_csr, bool, 0644);
1701 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1702
1703 module_param(ignore_sniffer, bool, 0644);
1704 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1705
1706 module_param(disable_scofix, bool, 0644);
1707 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1708
1709 module_param(force_scofix, bool, 0644);
1710 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1711
1712 module_param(reset, bool, 0644);
1713 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1714
1715 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1716 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1717 MODULE_VERSION(VERSION);
1718 MODULE_LICENSE("GPL");
Linux with added FPC-III support