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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / bluetooth / btusb.c
1 /*
2 *
3 * Generic Bluetooth USB driver
4 *
5 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
6 *
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/slab.h>
28 #include <linux/types.h>
29 #include <linux/sched.h>
30 #include <linux/errno.h>
31 #include <linux/skbuff.h>
32
33 #include <linux/usb.h>
34
35 #include <net/bluetooth/bluetooth.h>
36 #include <net/bluetooth/hci_core.h>
37
38 #define VERSION "0.6"
39
40 static int ignore_dga;
41 static int ignore_csr;
42 static int ignore_sniffer;
43 static int disable_scofix;
44 static int force_scofix;
45
46 static int reset = 1;
47
48 static struct usb_driver btusb_driver;
49
50 #define BTUSB_IGNORE 0x01
51 #define BTUSB_DIGIANSWER 0x02
52 #define BTUSB_CSR 0x04
53 #define BTUSB_SNIFFER 0x08
54 #define BTUSB_BCM92035 0x10
55 #define BTUSB_BROKEN_ISOC 0x20
56 #define BTUSB_WRONG_SCO_MTU 0x40
57 #define BTUSB_ATH3012 0x80
58
59 static struct usb_device_id btusb_table[] = {
60 /* Generic Bluetooth USB device */
61 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
62
63 /* Broadcom SoftSailing reporting vendor specific */
64 { USB_DEVICE(0x05ac, 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(0x0a5c, 0x21e3) },
105 { USB_DEVICE(0x413c, 0x8197) },
106
107 { } /* Terminating entry */
108 };
109
110 MODULE_DEVICE_TABLE(usb, btusb_table);
111
112 static struct usb_device_id blacklist_table[] = {
113 /* CSR BlueCore devices */
114 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
115
116 /* Broadcom BCM2033 without firmware */
117 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
118
119 /* Atheros 3011 with sflash firmware */
120 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
121 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
122 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
123
124 /* Atheros AR9285 Malbec with sflash firmware */
125 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
126
127 /* Atheros 3012 with sflash firmware */
128 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
129
130 /* Atheros AR5BBU12 with sflash firmware */
131 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
132
133 /* Broadcom BCM2035 */
134 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
135 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
136 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
137
138 /* Broadcom BCM2045 */
139 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
140 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
141
142 /* IBM/Lenovo ThinkPad with Broadcom chip */
143 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
144 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
145
146 /* HP laptop with Broadcom chip */
147 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
148
149 /* Dell laptop with Broadcom chip */
150 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
151
152 /* Dell Wireless 370 and 410 devices */
153 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
154 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
155
156 /* Belkin F8T012 and F8T013 devices */
157 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
158 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
159
160 /* Asus WL-BTD202 device */
161 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
162
163 /* Kensington Bluetooth USB adapter */
164 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
165
166 /* RTX Telecom based adapters with buggy SCO support */
167 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
168 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
169
170 /* CONWISE Technology based adapters with buggy SCO support */
171 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
172
173 /* Digianswer devices */
174 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
175 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
176
177 /* CSR BlueCore Bluetooth Sniffer */
178 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
179
180 /* Frontline ComProbe Bluetooth Sniffer */
181 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
182
183 { } /* Terminating entry */
184 };
185
186 #define BTUSB_MAX_ISOC_FRAMES 10
187
188 #define BTUSB_INTR_RUNNING 0
189 #define BTUSB_BULK_RUNNING 1
190 #define BTUSB_ISOC_RUNNING 2
191 #define BTUSB_SUSPENDING 3
192 #define BTUSB_DID_ISO_RESUME 4
193
194 struct btusb_data {
195 struct hci_dev *hdev;
196 struct usb_device *udev;
197 struct usb_interface *intf;
198 struct usb_interface *isoc;
199
200 spinlock_t lock;
201
202 unsigned long flags;
203
204 struct work_struct work;
205 struct work_struct waker;
206
207 struct usb_anchor tx_anchor;
208 struct usb_anchor intr_anchor;
209 struct usb_anchor bulk_anchor;
210 struct usb_anchor isoc_anchor;
211 struct usb_anchor deferred;
212 int tx_in_flight;
213 spinlock_t txlock;
214
215 struct usb_endpoint_descriptor *intr_ep;
216 struct usb_endpoint_descriptor *bulk_tx_ep;
217 struct usb_endpoint_descriptor *bulk_rx_ep;
218 struct usb_endpoint_descriptor *isoc_tx_ep;
219 struct usb_endpoint_descriptor *isoc_rx_ep;
220
221 __u8 cmdreq_type;
222
223 unsigned int sco_num;
224 int isoc_altsetting;
225 int suspend_count;
226 };
227
228 static int inc_tx(struct btusb_data *data)
229 {
230 unsigned long flags;
231 int rv;
232
233 spin_lock_irqsave(&data->txlock, flags);
234 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
235 if (!rv)
236 data->tx_in_flight++;
237 spin_unlock_irqrestore(&data->txlock, flags);
238
239 return rv;
240 }
241
242 static void btusb_intr_complete(struct urb *urb)
243 {
244 struct hci_dev *hdev = urb->context;
245 struct btusb_data *data = hdev->driver_data;
246 int err;
247
248 BT_DBG("%s urb %p status %d count %d", hdev->name,
249 urb, urb->status, urb->actual_length);
250
251 if (!test_bit(HCI_RUNNING, &hdev->flags))
252 return;
253
254 if (urb->status == 0) {
255 hdev->stat.byte_rx += urb->actual_length;
256
257 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
258 urb->transfer_buffer,
259 urb->actual_length) < 0) {
260 BT_ERR("%s corrupted event packet", hdev->name);
261 hdev->stat.err_rx++;
262 }
263 }
264
265 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
266 return;
267
268 usb_mark_last_busy(data->udev);
269 usb_anchor_urb(urb, &data->intr_anchor);
270
271 err = usb_submit_urb(urb, GFP_ATOMIC);
272 if (err < 0) {
273 /* -EPERM: urb is being killed;
274 * -ENODEV: device got disconnected */
275 if (err != -EPERM && err != -ENODEV)
276 BT_ERR("%s urb %p failed to resubmit (%d)",
277 hdev->name, urb, -err);
278 usb_unanchor_urb(urb);
279 }
280 }
281
282 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
283 {
284 struct btusb_data *data = hdev->driver_data;
285 struct urb *urb;
286 unsigned char *buf;
287 unsigned int pipe;
288 int err, size;
289
290 BT_DBG("%s", hdev->name);
291
292 if (!data->intr_ep)
293 return -ENODEV;
294
295 urb = usb_alloc_urb(0, mem_flags);
296 if (!urb)
297 return -ENOMEM;
298
299 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
300
301 buf = kmalloc(size, mem_flags);
302 if (!buf) {
303 usb_free_urb(urb);
304 return -ENOMEM;
305 }
306
307 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
308
309 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
310 btusb_intr_complete, hdev,
311 data->intr_ep->bInterval);
312
313 urb->transfer_flags |= URB_FREE_BUFFER;
314
315 usb_anchor_urb(urb, &data->intr_anchor);
316
317 err = usb_submit_urb(urb, mem_flags);
318 if (err < 0) {
319 if (err != -EPERM && err != -ENODEV)
320 BT_ERR("%s urb %p submission failed (%d)",
321 hdev->name, urb, -err);
322 usb_unanchor_urb(urb);
323 }
324
325 usb_free_urb(urb);
326
327 return err;
328 }
329
330 static void btusb_bulk_complete(struct urb *urb)
331 {
332 struct hci_dev *hdev = urb->context;
333 struct btusb_data *data = hdev->driver_data;
334 int err;
335
336 BT_DBG("%s urb %p status %d count %d", hdev->name,
337 urb, urb->status, urb->actual_length);
338
339 if (!test_bit(HCI_RUNNING, &hdev->flags))
340 return;
341
342 if (urb->status == 0) {
343 hdev->stat.byte_rx += urb->actual_length;
344
345 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
346 urb->transfer_buffer,
347 urb->actual_length) < 0) {
348 BT_ERR("%s corrupted ACL packet", hdev->name);
349 hdev->stat.err_rx++;
350 }
351 }
352
353 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
354 return;
355
356 usb_anchor_urb(urb, &data->bulk_anchor);
357 usb_mark_last_busy(data->udev);
358
359 err = usb_submit_urb(urb, GFP_ATOMIC);
360 if (err < 0) {
361 /* -EPERM: urb is being killed;
362 * -ENODEV: device got disconnected */
363 if (err != -EPERM && err != -ENODEV)
364 BT_ERR("%s urb %p failed to resubmit (%d)",
365 hdev->name, urb, -err);
366 usb_unanchor_urb(urb);
367 }
368 }
369
370 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
371 {
372 struct btusb_data *data = hdev->driver_data;
373 struct urb *urb;
374 unsigned char *buf;
375 unsigned int pipe;
376 int err, size = HCI_MAX_FRAME_SIZE;
377
378 BT_DBG("%s", hdev->name);
379
380 if (!data->bulk_rx_ep)
381 return -ENODEV;
382
383 urb = usb_alloc_urb(0, mem_flags);
384 if (!urb)
385 return -ENOMEM;
386
387 buf = kmalloc(size, mem_flags);
388 if (!buf) {
389 usb_free_urb(urb);
390 return -ENOMEM;
391 }
392
393 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
394
395 usb_fill_bulk_urb(urb, data->udev, pipe,
396 buf, size, btusb_bulk_complete, hdev);
397
398 urb->transfer_flags |= URB_FREE_BUFFER;
399
400 usb_mark_last_busy(data->udev);
401 usb_anchor_urb(urb, &data->bulk_anchor);
402
403 err = usb_submit_urb(urb, mem_flags);
404 if (err < 0) {
405 if (err != -EPERM && err != -ENODEV)
406 BT_ERR("%s urb %p submission failed (%d)",
407 hdev->name, urb, -err);
408 usb_unanchor_urb(urb);
409 }
410
411 usb_free_urb(urb);
412
413 return err;
414 }
415
416 static void btusb_isoc_complete(struct urb *urb)
417 {
418 struct hci_dev *hdev = urb->context;
419 struct btusb_data *data = hdev->driver_data;
420 int i, err;
421
422 BT_DBG("%s urb %p status %d count %d", hdev->name,
423 urb, urb->status, urb->actual_length);
424
425 if (!test_bit(HCI_RUNNING, &hdev->flags))
426 return;
427
428 if (urb->status == 0) {
429 for (i = 0; i < urb->number_of_packets; i++) {
430 unsigned int offset = urb->iso_frame_desc[i].offset;
431 unsigned int length = urb->iso_frame_desc[i].actual_length;
432
433 if (urb->iso_frame_desc[i].status)
434 continue;
435
436 hdev->stat.byte_rx += length;
437
438 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
439 urb->transfer_buffer + offset,
440 length) < 0) {
441 BT_ERR("%s corrupted SCO packet", hdev->name);
442 hdev->stat.err_rx++;
443 }
444 }
445 }
446
447 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
448 return;
449
450 usb_anchor_urb(urb, &data->isoc_anchor);
451
452 err = usb_submit_urb(urb, GFP_ATOMIC);
453 if (err < 0) {
454 /* -EPERM: urb is being killed;
455 * -ENODEV: device got disconnected */
456 if (err != -EPERM && err != -ENODEV)
457 BT_ERR("%s urb %p failed to resubmit (%d)",
458 hdev->name, urb, -err);
459 usb_unanchor_urb(urb);
460 }
461 }
462
463 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
464 {
465 int i, offset = 0;
466
467 BT_DBG("len %d mtu %d", len, mtu);
468
469 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
470 i++, offset += mtu, len -= mtu) {
471 urb->iso_frame_desc[i].offset = offset;
472 urb->iso_frame_desc[i].length = mtu;
473 }
474
475 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
476 urb->iso_frame_desc[i].offset = offset;
477 urb->iso_frame_desc[i].length = len;
478 i++;
479 }
480
481 urb->number_of_packets = i;
482 }
483
484 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
485 {
486 struct btusb_data *data = hdev->driver_data;
487 struct urb *urb;
488 unsigned char *buf;
489 unsigned int pipe;
490 int err, size;
491
492 BT_DBG("%s", hdev->name);
493
494 if (!data->isoc_rx_ep)
495 return -ENODEV;
496
497 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
498 if (!urb)
499 return -ENOMEM;
500
501 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
502 BTUSB_MAX_ISOC_FRAMES;
503
504 buf = kmalloc(size, mem_flags);
505 if (!buf) {
506 usb_free_urb(urb);
507 return -ENOMEM;
508 }
509
510 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
511
512 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
513 hdev, data->isoc_rx_ep->bInterval);
514
515 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
516
517 __fill_isoc_descriptor(urb, size,
518 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
519
520 usb_anchor_urb(urb, &data->isoc_anchor);
521
522 err = usb_submit_urb(urb, mem_flags);
523 if (err < 0) {
524 if (err != -EPERM && err != -ENODEV)
525 BT_ERR("%s urb %p submission failed (%d)",
526 hdev->name, urb, -err);
527 usb_unanchor_urb(urb);
528 }
529
530 usb_free_urb(urb);
531
532 return err;
533 }
534
535 static void btusb_tx_complete(struct urb *urb)
536 {
537 struct sk_buff *skb = urb->context;
538 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
539 struct btusb_data *data = hdev->driver_data;
540
541 BT_DBG("%s urb %p status %d count %d", hdev->name,
542 urb, urb->status, urb->actual_length);
543
544 if (!test_bit(HCI_RUNNING, &hdev->flags))
545 goto done;
546
547 if (!urb->status)
548 hdev->stat.byte_tx += urb->transfer_buffer_length;
549 else
550 hdev->stat.err_tx++;
551
552 done:
553 spin_lock(&data->txlock);
554 data->tx_in_flight--;
555 spin_unlock(&data->txlock);
556
557 kfree(urb->setup_packet);
558
559 kfree_skb(skb);
560 }
561
562 static void btusb_isoc_tx_complete(struct urb *urb)
563 {
564 struct sk_buff *skb = urb->context;
565 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
566
567 BT_DBG("%s urb %p status %d count %d", hdev->name,
568 urb, urb->status, urb->actual_length);
569
570 if (!test_bit(HCI_RUNNING, &hdev->flags))
571 goto done;
572
573 if (!urb->status)
574 hdev->stat.byte_tx += urb->transfer_buffer_length;
575 else
576 hdev->stat.err_tx++;
577
578 done:
579 kfree(urb->setup_packet);
580
581 kfree_skb(skb);
582 }
583
584 static int btusb_open(struct hci_dev *hdev)
585 {
586 struct btusb_data *data = hdev->driver_data;
587 int err;
588
589 BT_DBG("%s", hdev->name);
590
591 err = usb_autopm_get_interface(data->intf);
592 if (err < 0)
593 return err;
594
595 data->intf->needs_remote_wakeup = 1;
596
597 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
598 goto done;
599
600 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
601 goto done;
602
603 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
604 if (err < 0)
605 goto failed;
606
607 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
608 if (err < 0) {
609 usb_kill_anchored_urbs(&data->intr_anchor);
610 goto failed;
611 }
612
613 set_bit(BTUSB_BULK_RUNNING, &data->flags);
614 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
615
616 done:
617 usb_autopm_put_interface(data->intf);
618 return 0;
619
620 failed:
621 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
622 clear_bit(HCI_RUNNING, &hdev->flags);
623 usb_autopm_put_interface(data->intf);
624 return err;
625 }
626
627 static void btusb_stop_traffic(struct btusb_data *data)
628 {
629 usb_kill_anchored_urbs(&data->intr_anchor);
630 usb_kill_anchored_urbs(&data->bulk_anchor);
631 usb_kill_anchored_urbs(&data->isoc_anchor);
632 }
633
634 static int btusb_close(struct hci_dev *hdev)
635 {
636 struct btusb_data *data = hdev->driver_data;
637 int err;
638
639 BT_DBG("%s", hdev->name);
640
641 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
642 return 0;
643
644 cancel_work_sync(&data->work);
645 cancel_work_sync(&data->waker);
646
647 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
648 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
649 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
650
651 btusb_stop_traffic(data);
652 err = usb_autopm_get_interface(data->intf);
653 if (err < 0)
654 goto failed;
655
656 data->intf->needs_remote_wakeup = 0;
657 usb_autopm_put_interface(data->intf);
658
659 failed:
660 usb_scuttle_anchored_urbs(&data->deferred);
661 return 0;
662 }
663
664 static int btusb_flush(struct hci_dev *hdev)
665 {
666 struct btusb_data *data = hdev->driver_data;
667
668 BT_DBG("%s", hdev->name);
669
670 usb_kill_anchored_urbs(&data->tx_anchor);
671
672 return 0;
673 }
674
675 static int btusb_send_frame(struct sk_buff *skb)
676 {
677 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
678 struct btusb_data *data = hdev->driver_data;
679 struct usb_ctrlrequest *dr;
680 struct urb *urb;
681 unsigned int pipe;
682 int err;
683
684 BT_DBG("%s", hdev->name);
685
686 if (!test_bit(HCI_RUNNING, &hdev->flags))
687 return -EBUSY;
688
689 switch (bt_cb(skb)->pkt_type) {
690 case HCI_COMMAND_PKT:
691 urb = usb_alloc_urb(0, GFP_ATOMIC);
692 if (!urb)
693 return -ENOMEM;
694
695 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
696 if (!dr) {
697 usb_free_urb(urb);
698 return -ENOMEM;
699 }
700
701 dr->bRequestType = data->cmdreq_type;
702 dr->bRequest = 0;
703 dr->wIndex = 0;
704 dr->wValue = 0;
705 dr->wLength = __cpu_to_le16(skb->len);
706
707 pipe = usb_sndctrlpipe(data->udev, 0x00);
708
709 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
710 skb->data, skb->len, btusb_tx_complete, skb);
711
712 hdev->stat.cmd_tx++;
713 break;
714
715 case HCI_ACLDATA_PKT:
716 if (!data->bulk_tx_ep)
717 return -ENODEV;
718
719 urb = usb_alloc_urb(0, GFP_ATOMIC);
720 if (!urb)
721 return -ENOMEM;
722
723 pipe = usb_sndbulkpipe(data->udev,
724 data->bulk_tx_ep->bEndpointAddress);
725
726 usb_fill_bulk_urb(urb, data->udev, pipe,
727 skb->data, skb->len, btusb_tx_complete, skb);
728
729 if (skb->priority >= HCI_PRIO_MAX - 1)
730 urb->transfer_flags = URB_ISO_ASAP;
731
732 hdev->stat.acl_tx++;
733 break;
734
735 case HCI_SCODATA_PKT:
736 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
737 return -ENODEV;
738
739 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
740 if (!urb)
741 return -ENOMEM;
742
743 pipe = usb_sndisocpipe(data->udev,
744 data->isoc_tx_ep->bEndpointAddress);
745
746 usb_fill_int_urb(urb, data->udev, pipe,
747 skb->data, skb->len, btusb_isoc_tx_complete,
748 skb, data->isoc_tx_ep->bInterval);
749
750 urb->transfer_flags = URB_ISO_ASAP;
751
752 __fill_isoc_descriptor(urb, skb->len,
753 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
754
755 hdev->stat.sco_tx++;
756 goto skip_waking;
757
758 default:
759 return -EILSEQ;
760 }
761
762 err = inc_tx(data);
763 if (err) {
764 usb_anchor_urb(urb, &data->deferred);
765 schedule_work(&data->waker);
766 err = 0;
767 goto done;
768 }
769
770 skip_waking:
771 usb_anchor_urb(urb, &data->tx_anchor);
772
773 err = usb_submit_urb(urb, GFP_ATOMIC);
774 if (err < 0) {
775 if (err != -EPERM && err != -ENODEV)
776 BT_ERR("%s urb %p submission failed (%d)",
777 hdev->name, urb, -err);
778 kfree(urb->setup_packet);
779 usb_unanchor_urb(urb);
780 } else {
781 usb_mark_last_busy(data->udev);
782 }
783
784 done:
785 usb_free_urb(urb);
786 return err;
787 }
788
789 static void btusb_destruct(struct hci_dev *hdev)
790 {
791 struct btusb_data *data = hdev->driver_data;
792
793 BT_DBG("%s", hdev->name);
794
795 kfree(data);
796 }
797
798 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
799 {
800 struct btusb_data *data = hdev->driver_data;
801
802 BT_DBG("%s evt %d", hdev->name, evt);
803
804 if (hdev->conn_hash.sco_num != data->sco_num) {
805 data->sco_num = hdev->conn_hash.sco_num;
806 schedule_work(&data->work);
807 }
808 }
809
810 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
811 {
812 struct btusb_data *data = hdev->driver_data;
813 struct usb_interface *intf = data->isoc;
814 struct usb_endpoint_descriptor *ep_desc;
815 int i, err;
816
817 if (!data->isoc)
818 return -ENODEV;
819
820 err = usb_set_interface(data->udev, 1, altsetting);
821 if (err < 0) {
822 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
823 return err;
824 }
825
826 data->isoc_altsetting = altsetting;
827
828 data->isoc_tx_ep = NULL;
829 data->isoc_rx_ep = NULL;
830
831 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
832 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
833
834 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
835 data->isoc_tx_ep = ep_desc;
836 continue;
837 }
838
839 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
840 data->isoc_rx_ep = ep_desc;
841 continue;
842 }
843 }
844
845 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
846 BT_ERR("%s invalid SCO descriptors", hdev->name);
847 return -ENODEV;
848 }
849
850 return 0;
851 }
852
853 static void btusb_work(struct work_struct *work)
854 {
855 struct btusb_data *data = container_of(work, struct btusb_data, work);
856 struct hci_dev *hdev = data->hdev;
857 int err;
858
859 if (hdev->conn_hash.sco_num > 0) {
860 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
861 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
862 if (err < 0) {
863 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
864 usb_kill_anchored_urbs(&data->isoc_anchor);
865 return;
866 }
867
868 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
869 }
870 if (data->isoc_altsetting != 2) {
871 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
872 usb_kill_anchored_urbs(&data->isoc_anchor);
873
874 if (__set_isoc_interface(hdev, 2) < 0)
875 return;
876 }
877
878 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
879 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
880 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
881 else
882 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
883 }
884 } else {
885 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
886 usb_kill_anchored_urbs(&data->isoc_anchor);
887
888 __set_isoc_interface(hdev, 0);
889 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
890 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
891 }
892 }
893
894 static void btusb_waker(struct work_struct *work)
895 {
896 struct btusb_data *data = container_of(work, struct btusb_data, waker);
897 int err;
898
899 err = usb_autopm_get_interface(data->intf);
900 if (err < 0)
901 return;
902
903 usb_autopm_put_interface(data->intf);
904 }
905
906 static int btusb_probe(struct usb_interface *intf,
907 const struct usb_device_id *id)
908 {
909 struct usb_endpoint_descriptor *ep_desc;
910 struct btusb_data *data;
911 struct hci_dev *hdev;
912 int i, err;
913
914 BT_DBG("intf %p id %p", intf, id);
915
916 /* interface numbers are hardcoded in the spec */
917 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
918 return -ENODEV;
919
920 if (!id->driver_info) {
921 const struct usb_device_id *match;
922 match = usb_match_id(intf, blacklist_table);
923 if (match)
924 id = match;
925 }
926
927 if (id->driver_info == BTUSB_IGNORE)
928 return -ENODEV;
929
930 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
931 return -ENODEV;
932
933 if (ignore_csr && id->driver_info & BTUSB_CSR)
934 return -ENODEV;
935
936 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
937 return -ENODEV;
938
939 if (id->driver_info & BTUSB_ATH3012) {
940 struct usb_device *udev = interface_to_usbdev(intf);
941
942 /* Old firmware would otherwise let ath3k driver load
943 * patch and sysconfig files */
944 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
945 return -ENODEV;
946 }
947
948 data = kzalloc(sizeof(*data), GFP_KERNEL);
949 if (!data)
950 return -ENOMEM;
951
952 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
953 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
954
955 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
956 data->intr_ep = ep_desc;
957 continue;
958 }
959
960 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
961 data->bulk_tx_ep = ep_desc;
962 continue;
963 }
964
965 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
966 data->bulk_rx_ep = ep_desc;
967 continue;
968 }
969 }
970
971 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
972 kfree(data);
973 return -ENODEV;
974 }
975
976 data->cmdreq_type = USB_TYPE_CLASS;
977
978 data->udev = interface_to_usbdev(intf);
979 data->intf = intf;
980
981 spin_lock_init(&data->lock);
982
983 INIT_WORK(&data->work, btusb_work);
984 INIT_WORK(&data->waker, btusb_waker);
985 spin_lock_init(&data->txlock);
986
987 init_usb_anchor(&data->tx_anchor);
988 init_usb_anchor(&data->intr_anchor);
989 init_usb_anchor(&data->bulk_anchor);
990 init_usb_anchor(&data->isoc_anchor);
991 init_usb_anchor(&data->deferred);
992
993 hdev = hci_alloc_dev();
994 if (!hdev) {
995 kfree(data);
996 return -ENOMEM;
997 }
998
999 hdev->bus = HCI_USB;
1000 hdev->driver_data = data;
1001
1002 data->hdev = hdev;
1003
1004 SET_HCIDEV_DEV(hdev, &intf->dev);
1005
1006 hdev->open = btusb_open;
1007 hdev->close = btusb_close;
1008 hdev->flush = btusb_flush;
1009 hdev->send = btusb_send_frame;
1010 hdev->destruct = btusb_destruct;
1011 hdev->notify = btusb_notify;
1012
1013 hdev->owner = THIS_MODULE;
1014
1015 /* Interface numbers are hardcoded in the specification */
1016 data->isoc = usb_ifnum_to_if(data->udev, 1);
1017
1018 if (!reset)
1019 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1020
1021 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1022 if (!disable_scofix)
1023 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1024 }
1025
1026 if (id->driver_info & BTUSB_BROKEN_ISOC)
1027 data->isoc = NULL;
1028
1029 if (id->driver_info & BTUSB_DIGIANSWER) {
1030 data->cmdreq_type = USB_TYPE_VENDOR;
1031 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1032 }
1033
1034 if (id->driver_info & BTUSB_CSR) {
1035 struct usb_device *udev = data->udev;
1036
1037 /* Old firmware would otherwise execute USB reset */
1038 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1039 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1040 }
1041
1042 if (id->driver_info & BTUSB_SNIFFER) {
1043 struct usb_device *udev = data->udev;
1044
1045 /* New sniffer firmware has crippled HCI interface */
1046 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1047 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1048
1049 data->isoc = NULL;
1050 }
1051
1052 if (id->driver_info & BTUSB_BCM92035) {
1053 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1054 struct sk_buff *skb;
1055
1056 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1057 if (skb) {
1058 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1059 skb_queue_tail(&hdev->driver_init, skb);
1060 }
1061 }
1062
1063 if (data->isoc) {
1064 err = usb_driver_claim_interface(&btusb_driver,
1065 data->isoc, data);
1066 if (err < 0) {
1067 hci_free_dev(hdev);
1068 kfree(data);
1069 return err;
1070 }
1071 }
1072
1073 err = hci_register_dev(hdev);
1074 if (err < 0) {
1075 hci_free_dev(hdev);
1076 kfree(data);
1077 return err;
1078 }
1079
1080 usb_set_intfdata(intf, data);
1081
1082 return 0;
1083 }
1084
1085 static void btusb_disconnect(struct usb_interface *intf)
1086 {
1087 struct btusb_data *data = usb_get_intfdata(intf);
1088 struct hci_dev *hdev;
1089
1090 BT_DBG("intf %p", intf);
1091
1092 if (!data)
1093 return;
1094
1095 hdev = data->hdev;
1096
1097 __hci_dev_hold(hdev);
1098
1099 usb_set_intfdata(data->intf, NULL);
1100
1101 if (data->isoc)
1102 usb_set_intfdata(data->isoc, NULL);
1103
1104 hci_unregister_dev(hdev);
1105
1106 if (intf == data->isoc)
1107 usb_driver_release_interface(&btusb_driver, data->intf);
1108 else if (data->isoc)
1109 usb_driver_release_interface(&btusb_driver, data->isoc);
1110
1111 __hci_dev_put(hdev);
1112
1113 hci_free_dev(hdev);
1114 }
1115
1116 #ifdef CONFIG_PM
1117 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1118 {
1119 struct btusb_data *data = usb_get_intfdata(intf);
1120
1121 BT_DBG("intf %p", intf);
1122
1123 if (data->suspend_count++)
1124 return 0;
1125
1126 spin_lock_irq(&data->txlock);
1127 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1128 set_bit(BTUSB_SUSPENDING, &data->flags);
1129 spin_unlock_irq(&data->txlock);
1130 } else {
1131 spin_unlock_irq(&data->txlock);
1132 data->suspend_count--;
1133 return -EBUSY;
1134 }
1135
1136 cancel_work_sync(&data->work);
1137
1138 btusb_stop_traffic(data);
1139 usb_kill_anchored_urbs(&data->tx_anchor);
1140
1141 return 0;
1142 }
1143
1144 static void play_deferred(struct btusb_data *data)
1145 {
1146 struct urb *urb;
1147 int err;
1148
1149 while ((urb = usb_get_from_anchor(&data->deferred))) {
1150 err = usb_submit_urb(urb, GFP_ATOMIC);
1151 if (err < 0)
1152 break;
1153
1154 data->tx_in_flight++;
1155 }
1156 usb_scuttle_anchored_urbs(&data->deferred);
1157 }
1158
1159 static int btusb_resume(struct usb_interface *intf)
1160 {
1161 struct btusb_data *data = usb_get_intfdata(intf);
1162 struct hci_dev *hdev = data->hdev;
1163 int err = 0;
1164
1165 BT_DBG("intf %p", intf);
1166
1167 if (--data->suspend_count)
1168 return 0;
1169
1170 if (!test_bit(HCI_RUNNING, &hdev->flags))
1171 goto done;
1172
1173 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1174 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1175 if (err < 0) {
1176 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1177 goto failed;
1178 }
1179 }
1180
1181 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1182 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1183 if (err < 0) {
1184 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1185 goto failed;
1186 }
1187
1188 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1189 }
1190
1191 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1192 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1193 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1194 else
1195 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1196 }
1197
1198 spin_lock_irq(&data->txlock);
1199 play_deferred(data);
1200 clear_bit(BTUSB_SUSPENDING, &data->flags);
1201 spin_unlock_irq(&data->txlock);
1202 schedule_work(&data->work);
1203
1204 return 0;
1205
1206 failed:
1207 usb_scuttle_anchored_urbs(&data->deferred);
1208 done:
1209 spin_lock_irq(&data->txlock);
1210 clear_bit(BTUSB_SUSPENDING, &data->flags);
1211 spin_unlock_irq(&data->txlock);
1212
1213 return err;
1214 }
1215 #endif
1216
1217 static struct usb_driver btusb_driver = {
1218 .name = "btusb",
1219 .probe = btusb_probe,
1220 .disconnect = btusb_disconnect,
1221 #ifdef CONFIG_PM
1222 .suspend = btusb_suspend,
1223 .resume = btusb_resume,
1224 #endif
1225 .id_table = btusb_table,
1226 .supports_autosuspend = 1,
1227 };
1228
1229 module_usb_driver(btusb_driver);
1230
1231 module_param(ignore_dga, bool, 0644);
1232 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1233
1234 module_param(ignore_csr, bool, 0644);
1235 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1236
1237 module_param(ignore_sniffer, bool, 0644);
1238 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1239
1240 module_param(disable_scofix, bool, 0644);
1241 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1242
1243 module_param(force_scofix, bool, 0644);
1244 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1245
1246 module_param(reset, bool, 0644);
1247 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1248
1249 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1250 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1251 MODULE_VERSION(VERSION);
1252 MODULE_LICENSE("GPL");
kernel source for telekom puls (alcatel/mediatek)