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Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux...
[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
58 static struct usb_device_id btusb_table[] = {
59 /* Generic Bluetooth USB device */
60 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
61
62 /* Apple iMac11,1 */
63 { USB_DEVICE(0x05ac, 0x8215) },
64
65 /* AVM BlueFRITZ! USB v2.0 */
66 { USB_DEVICE(0x057c, 0x3800) },
67
68 /* Bluetooth Ultraport Module from IBM */
69 { USB_DEVICE(0x04bf, 0x030a) },
70
71 /* ALPS Modules with non-standard id */
72 { USB_DEVICE(0x044e, 0x3001) },
73 { USB_DEVICE(0x044e, 0x3002) },
74
75 /* Ericsson with non-standard id */
76 { USB_DEVICE(0x0bdb, 0x1002) },
77
78 /* Canyon CN-BTU1 with HID interfaces */
79 { USB_DEVICE(0x0c10, 0x0000) },
80
81 { } /* Terminating entry */
82 };
83
84 MODULE_DEVICE_TABLE(usb, btusb_table);
85
86 static struct usb_device_id blacklist_table[] = {
87 /* CSR BlueCore devices */
88 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
89
90 /* Broadcom BCM2033 without firmware */
91 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
92
93 /* Broadcom BCM2035 */
94 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
95 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
96 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
97
98 /* Broadcom BCM2045 */
99 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
100 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
101
102 /* IBM/Lenovo ThinkPad with Broadcom chip */
103 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
104 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
105
106 /* HP laptop with Broadcom chip */
107 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
108
109 /* Dell laptop with Broadcom chip */
110 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
111
112 /* Dell Wireless 370 and 410 devices */
113 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
114 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
115
116 /* Belkin F8T012 and F8T013 devices */
117 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
118 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
119
120 /* Asus WL-BTD202 device */
121 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
122
123 /* Kensington Bluetooth USB adapter */
124 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
125
126 /* RTX Telecom based adapters with buggy SCO support */
127 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
128 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
129
130 /* CONWISE Technology based adapters with buggy SCO support */
131 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
132
133 /* Digianswer devices */
134 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
135 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
136
137 /* CSR BlueCore Bluetooth Sniffer */
138 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
139
140 /* Frontline ComProbe Bluetooth Sniffer */
141 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
142
143 { } /* Terminating entry */
144 };
145
146 #define BTUSB_MAX_ISOC_FRAMES 10
147
148 #define BTUSB_INTR_RUNNING 0
149 #define BTUSB_BULK_RUNNING 1
150 #define BTUSB_ISOC_RUNNING 2
151 #define BTUSB_SUSPENDING 3
152 #define BTUSB_DID_ISO_RESUME 4
153
154 struct btusb_data {
155 struct hci_dev *hdev;
156 struct usb_device *udev;
157 struct usb_interface *intf;
158 struct usb_interface *isoc;
159
160 spinlock_t lock;
161
162 unsigned long flags;
163
164 struct work_struct work;
165 struct work_struct waker;
166
167 struct usb_anchor tx_anchor;
168 struct usb_anchor intr_anchor;
169 struct usb_anchor bulk_anchor;
170 struct usb_anchor isoc_anchor;
171 struct usb_anchor deferred;
172 int tx_in_flight;
173 spinlock_t txlock;
174
175 struct usb_endpoint_descriptor *intr_ep;
176 struct usb_endpoint_descriptor *bulk_tx_ep;
177 struct usb_endpoint_descriptor *bulk_rx_ep;
178 struct usb_endpoint_descriptor *isoc_tx_ep;
179 struct usb_endpoint_descriptor *isoc_rx_ep;
180
181 __u8 cmdreq_type;
182
183 unsigned int sco_num;
184 int isoc_altsetting;
185 int suspend_count;
186 };
187
188 static int inc_tx(struct btusb_data *data)
189 {
190 unsigned long flags;
191 int rv;
192
193 spin_lock_irqsave(&data->txlock, flags);
194 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
195 if (!rv)
196 data->tx_in_flight++;
197 spin_unlock_irqrestore(&data->txlock, flags);
198
199 return rv;
200 }
201
202 static void btusb_intr_complete(struct urb *urb)
203 {
204 struct hci_dev *hdev = urb->context;
205 struct btusb_data *data = hdev->driver_data;
206 int err;
207
208 BT_DBG("%s urb %p status %d count %d", hdev->name,
209 urb, urb->status, urb->actual_length);
210
211 if (!test_bit(HCI_RUNNING, &hdev->flags))
212 return;
213
214 if (urb->status == 0) {
215 hdev->stat.byte_rx += urb->actual_length;
216
217 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
218 urb->transfer_buffer,
219 urb->actual_length) < 0) {
220 BT_ERR("%s corrupted event packet", hdev->name);
221 hdev->stat.err_rx++;
222 }
223 }
224
225 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
226 return;
227
228 usb_mark_last_busy(data->udev);
229 usb_anchor_urb(urb, &data->intr_anchor);
230
231 err = usb_submit_urb(urb, GFP_ATOMIC);
232 if (err < 0) {
233 BT_ERR("%s urb %p failed to resubmit (%d)",
234 hdev->name, urb, -err);
235 usb_unanchor_urb(urb);
236 }
237 }
238
239 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
240 {
241 struct btusb_data *data = hdev->driver_data;
242 struct urb *urb;
243 unsigned char *buf;
244 unsigned int pipe;
245 int err, size;
246
247 BT_DBG("%s", hdev->name);
248
249 if (!data->intr_ep)
250 return -ENODEV;
251
252 urb = usb_alloc_urb(0, mem_flags);
253 if (!urb)
254 return -ENOMEM;
255
256 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
257
258 buf = kmalloc(size, mem_flags);
259 if (!buf) {
260 usb_free_urb(urb);
261 return -ENOMEM;
262 }
263
264 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
265
266 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
267 btusb_intr_complete, hdev,
268 data->intr_ep->bInterval);
269
270 urb->transfer_flags |= URB_FREE_BUFFER;
271
272 usb_anchor_urb(urb, &data->intr_anchor);
273
274 err = usb_submit_urb(urb, mem_flags);
275 if (err < 0) {
276 BT_ERR("%s urb %p submission failed (%d)",
277 hdev->name, urb, -err);
278 usb_unanchor_urb(urb);
279 }
280
281 usb_free_urb(urb);
282
283 return err;
284 }
285
286 static void btusb_bulk_complete(struct urb *urb)
287 {
288 struct hci_dev *hdev = urb->context;
289 struct btusb_data *data = hdev->driver_data;
290 int err;
291
292 BT_DBG("%s urb %p status %d count %d", hdev->name,
293 urb, urb->status, urb->actual_length);
294
295 if (!test_bit(HCI_RUNNING, &hdev->flags))
296 return;
297
298 if (urb->status == 0) {
299 hdev->stat.byte_rx += urb->actual_length;
300
301 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
302 urb->transfer_buffer,
303 urb->actual_length) < 0) {
304 BT_ERR("%s corrupted ACL packet", hdev->name);
305 hdev->stat.err_rx++;
306 }
307 }
308
309 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
310 return;
311
312 usb_anchor_urb(urb, &data->bulk_anchor);
313 usb_mark_last_busy(data->udev);
314
315 err = usb_submit_urb(urb, GFP_ATOMIC);
316 if (err < 0) {
317 BT_ERR("%s urb %p failed to resubmit (%d)",
318 hdev->name, urb, -err);
319 usb_unanchor_urb(urb);
320 }
321 }
322
323 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
324 {
325 struct btusb_data *data = hdev->driver_data;
326 struct urb *urb;
327 unsigned char *buf;
328 unsigned int pipe;
329 int err, size = HCI_MAX_FRAME_SIZE;
330
331 BT_DBG("%s", hdev->name);
332
333 if (!data->bulk_rx_ep)
334 return -ENODEV;
335
336 urb = usb_alloc_urb(0, mem_flags);
337 if (!urb)
338 return -ENOMEM;
339
340 buf = kmalloc(size, mem_flags);
341 if (!buf) {
342 usb_free_urb(urb);
343 return -ENOMEM;
344 }
345
346 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
347
348 usb_fill_bulk_urb(urb, data->udev, pipe,
349 buf, size, btusb_bulk_complete, hdev);
350
351 urb->transfer_flags |= URB_FREE_BUFFER;
352
353 usb_mark_last_busy(data->udev);
354 usb_anchor_urb(urb, &data->bulk_anchor);
355
356 err = usb_submit_urb(urb, mem_flags);
357 if (err < 0) {
358 BT_ERR("%s urb %p submission failed (%d)",
359 hdev->name, urb, -err);
360 usb_unanchor_urb(urb);
361 }
362
363 usb_free_urb(urb);
364
365 return err;
366 }
367
368 static void btusb_isoc_complete(struct urb *urb)
369 {
370 struct hci_dev *hdev = urb->context;
371 struct btusb_data *data = hdev->driver_data;
372 int i, err;
373
374 BT_DBG("%s urb %p status %d count %d", hdev->name,
375 urb, urb->status, urb->actual_length);
376
377 if (!test_bit(HCI_RUNNING, &hdev->flags))
378 return;
379
380 if (urb->status == 0) {
381 for (i = 0; i < urb->number_of_packets; i++) {
382 unsigned int offset = urb->iso_frame_desc[i].offset;
383 unsigned int length = urb->iso_frame_desc[i].actual_length;
384
385 if (urb->iso_frame_desc[i].status)
386 continue;
387
388 hdev->stat.byte_rx += length;
389
390 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
391 urb->transfer_buffer + offset,
392 length) < 0) {
393 BT_ERR("%s corrupted SCO packet", hdev->name);
394 hdev->stat.err_rx++;
395 }
396 }
397 }
398
399 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
400 return;
401
402 usb_anchor_urb(urb, &data->isoc_anchor);
403
404 err = usb_submit_urb(urb, GFP_ATOMIC);
405 if (err < 0) {
406 BT_ERR("%s urb %p failed to resubmit (%d)",
407 hdev->name, urb, -err);
408 usb_unanchor_urb(urb);
409 }
410 }
411
412 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
413 {
414 int i, offset = 0;
415
416 BT_DBG("len %d mtu %d", len, mtu);
417
418 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
419 i++, offset += mtu, len -= mtu) {
420 urb->iso_frame_desc[i].offset = offset;
421 urb->iso_frame_desc[i].length = mtu;
422 }
423
424 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
425 urb->iso_frame_desc[i].offset = offset;
426 urb->iso_frame_desc[i].length = len;
427 i++;
428 }
429
430 urb->number_of_packets = i;
431 }
432
433 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
434 {
435 struct btusb_data *data = hdev->driver_data;
436 struct urb *urb;
437 unsigned char *buf;
438 unsigned int pipe;
439 int err, size;
440
441 BT_DBG("%s", hdev->name);
442
443 if (!data->isoc_rx_ep)
444 return -ENODEV;
445
446 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
447 if (!urb)
448 return -ENOMEM;
449
450 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
451 BTUSB_MAX_ISOC_FRAMES;
452
453 buf = kmalloc(size, mem_flags);
454 if (!buf) {
455 usb_free_urb(urb);
456 return -ENOMEM;
457 }
458
459 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
460
461 urb->dev = data->udev;
462 urb->pipe = pipe;
463 urb->context = hdev;
464 urb->complete = btusb_isoc_complete;
465 urb->interval = data->isoc_rx_ep->bInterval;
466
467 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
468 urb->transfer_buffer = buf;
469 urb->transfer_buffer_length = size;
470
471 __fill_isoc_descriptor(urb, size,
472 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
473
474 usb_anchor_urb(urb, &data->isoc_anchor);
475
476 err = usb_submit_urb(urb, mem_flags);
477 if (err < 0) {
478 BT_ERR("%s urb %p submission failed (%d)",
479 hdev->name, urb, -err);
480 usb_unanchor_urb(urb);
481 }
482
483 usb_free_urb(urb);
484
485 return err;
486 }
487
488 static void btusb_tx_complete(struct urb *urb)
489 {
490 struct sk_buff *skb = urb->context;
491 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
492 struct btusb_data *data = hdev->driver_data;
493
494 BT_DBG("%s urb %p status %d count %d", hdev->name,
495 urb, urb->status, urb->actual_length);
496
497 if (!test_bit(HCI_RUNNING, &hdev->flags))
498 goto done;
499
500 if (!urb->status)
501 hdev->stat.byte_tx += urb->transfer_buffer_length;
502 else
503 hdev->stat.err_tx++;
504
505 done:
506 spin_lock(&data->txlock);
507 data->tx_in_flight--;
508 spin_unlock(&data->txlock);
509
510 kfree(urb->setup_packet);
511
512 kfree_skb(skb);
513 }
514
515 static void btusb_isoc_tx_complete(struct urb *urb)
516 {
517 struct sk_buff *skb = urb->context;
518 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
519
520 BT_DBG("%s urb %p status %d count %d", hdev->name,
521 urb, urb->status, urb->actual_length);
522
523 if (!test_bit(HCI_RUNNING, &hdev->flags))
524 goto done;
525
526 if (!urb->status)
527 hdev->stat.byte_tx += urb->transfer_buffer_length;
528 else
529 hdev->stat.err_tx++;
530
531 done:
532 kfree(urb->setup_packet);
533
534 kfree_skb(skb);
535 }
536
537 static int btusb_open(struct hci_dev *hdev)
538 {
539 struct btusb_data *data = hdev->driver_data;
540 int err;
541
542 BT_DBG("%s", hdev->name);
543
544 err = usb_autopm_get_interface(data->intf);
545 if (err < 0)
546 return err;
547
548 data->intf->needs_remote_wakeup = 1;
549
550 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
551 goto done;
552
553 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
554 goto done;
555
556 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
557 if (err < 0)
558 goto failed;
559
560 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
561 if (err < 0) {
562 usb_kill_anchored_urbs(&data->intr_anchor);
563 goto failed;
564 }
565
566 set_bit(BTUSB_BULK_RUNNING, &data->flags);
567 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
568
569 done:
570 usb_autopm_put_interface(data->intf);
571 return 0;
572
573 failed:
574 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
575 clear_bit(HCI_RUNNING, &hdev->flags);
576 usb_autopm_put_interface(data->intf);
577 return err;
578 }
579
580 static void btusb_stop_traffic(struct btusb_data *data)
581 {
582 usb_kill_anchored_urbs(&data->intr_anchor);
583 usb_kill_anchored_urbs(&data->bulk_anchor);
584 usb_kill_anchored_urbs(&data->isoc_anchor);
585 }
586
587 static int btusb_close(struct hci_dev *hdev)
588 {
589 struct btusb_data *data = hdev->driver_data;
590 int err;
591
592 BT_DBG("%s", hdev->name);
593
594 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
595 return 0;
596
597 cancel_work_sync(&data->work);
598 cancel_work_sync(&data->waker);
599
600 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
601 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
602 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
603
604 btusb_stop_traffic(data);
605 err = usb_autopm_get_interface(data->intf);
606 if (err < 0)
607 goto failed;
608
609 data->intf->needs_remote_wakeup = 0;
610 usb_autopm_put_interface(data->intf);
611
612 failed:
613 usb_scuttle_anchored_urbs(&data->deferred);
614 return 0;
615 }
616
617 static int btusb_flush(struct hci_dev *hdev)
618 {
619 struct btusb_data *data = hdev->driver_data;
620
621 BT_DBG("%s", hdev->name);
622
623 usb_kill_anchored_urbs(&data->tx_anchor);
624
625 return 0;
626 }
627
628 static int btusb_send_frame(struct sk_buff *skb)
629 {
630 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
631 struct btusb_data *data = hdev->driver_data;
632 struct usb_ctrlrequest *dr;
633 struct urb *urb;
634 unsigned int pipe;
635 int err;
636
637 BT_DBG("%s", hdev->name);
638
639 if (!test_bit(HCI_RUNNING, &hdev->flags))
640 return -EBUSY;
641
642 switch (bt_cb(skb)->pkt_type) {
643 case HCI_COMMAND_PKT:
644 urb = usb_alloc_urb(0, GFP_ATOMIC);
645 if (!urb)
646 return -ENOMEM;
647
648 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
649 if (!dr) {
650 usb_free_urb(urb);
651 return -ENOMEM;
652 }
653
654 dr->bRequestType = data->cmdreq_type;
655 dr->bRequest = 0;
656 dr->wIndex = 0;
657 dr->wValue = 0;
658 dr->wLength = __cpu_to_le16(skb->len);
659
660 pipe = usb_sndctrlpipe(data->udev, 0x00);
661
662 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
663 skb->data, skb->len, btusb_tx_complete, skb);
664
665 hdev->stat.cmd_tx++;
666 break;
667
668 case HCI_ACLDATA_PKT:
669 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
670 return -ENODEV;
671
672 urb = usb_alloc_urb(0, GFP_ATOMIC);
673 if (!urb)
674 return -ENOMEM;
675
676 pipe = usb_sndbulkpipe(data->udev,
677 data->bulk_tx_ep->bEndpointAddress);
678
679 usb_fill_bulk_urb(urb, data->udev, pipe,
680 skb->data, skb->len, btusb_tx_complete, skb);
681
682 hdev->stat.acl_tx++;
683 break;
684
685 case HCI_SCODATA_PKT:
686 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
687 return -ENODEV;
688
689 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
690 if (!urb)
691 return -ENOMEM;
692
693 pipe = usb_sndisocpipe(data->udev,
694 data->isoc_tx_ep->bEndpointAddress);
695
696 urb->dev = data->udev;
697 urb->pipe = pipe;
698 urb->context = skb;
699 urb->complete = btusb_isoc_tx_complete;
700 urb->interval = data->isoc_tx_ep->bInterval;
701
702 urb->transfer_flags = URB_ISO_ASAP;
703 urb->transfer_buffer = skb->data;
704 urb->transfer_buffer_length = skb->len;
705
706 __fill_isoc_descriptor(urb, skb->len,
707 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
708
709 hdev->stat.sco_tx++;
710 goto skip_waking;
711
712 default:
713 return -EILSEQ;
714 }
715
716 err = inc_tx(data);
717 if (err) {
718 usb_anchor_urb(urb, &data->deferred);
719 schedule_work(&data->waker);
720 err = 0;
721 goto done;
722 }
723
724 skip_waking:
725 usb_anchor_urb(urb, &data->tx_anchor);
726
727 err = usb_submit_urb(urb, GFP_ATOMIC);
728 if (err < 0) {
729 BT_ERR("%s urb %p submission failed", hdev->name, urb);
730 kfree(urb->setup_packet);
731 usb_unanchor_urb(urb);
732 } else {
733 usb_mark_last_busy(data->udev);
734 }
735
736 usb_free_urb(urb);
737
738 done:
739 return err;
740 }
741
742 static void btusb_destruct(struct hci_dev *hdev)
743 {
744 struct btusb_data *data = hdev->driver_data;
745
746 BT_DBG("%s", hdev->name);
747
748 kfree(data);
749 }
750
751 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
752 {
753 struct btusb_data *data = hdev->driver_data;
754
755 BT_DBG("%s evt %d", hdev->name, evt);
756
757 if (hdev->conn_hash.sco_num != data->sco_num) {
758 data->sco_num = hdev->conn_hash.sco_num;
759 schedule_work(&data->work);
760 }
761 }
762
763 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
764 {
765 struct btusb_data *data = hdev->driver_data;
766 struct usb_interface *intf = data->isoc;
767 struct usb_endpoint_descriptor *ep_desc;
768 int i, err;
769
770 if (!data->isoc)
771 return -ENODEV;
772
773 err = usb_set_interface(data->udev, 1, altsetting);
774 if (err < 0) {
775 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
776 return err;
777 }
778
779 data->isoc_altsetting = altsetting;
780
781 data->isoc_tx_ep = NULL;
782 data->isoc_rx_ep = NULL;
783
784 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
785 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
786
787 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
788 data->isoc_tx_ep = ep_desc;
789 continue;
790 }
791
792 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
793 data->isoc_rx_ep = ep_desc;
794 continue;
795 }
796 }
797
798 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
799 BT_ERR("%s invalid SCO descriptors", hdev->name);
800 return -ENODEV;
801 }
802
803 return 0;
804 }
805
806 static void btusb_work(struct work_struct *work)
807 {
808 struct btusb_data *data = container_of(work, struct btusb_data, work);
809 struct hci_dev *hdev = data->hdev;
810 int err;
811
812 if (hdev->conn_hash.sco_num > 0) {
813 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
814 err = usb_autopm_get_interface(data->isoc);
815 if (err < 0) {
816 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
817 usb_kill_anchored_urbs(&data->isoc_anchor);
818 return;
819 }
820
821 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
822 }
823 if (data->isoc_altsetting != 2) {
824 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
825 usb_kill_anchored_urbs(&data->isoc_anchor);
826
827 if (__set_isoc_interface(hdev, 2) < 0)
828 return;
829 }
830
831 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
832 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
833 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
834 else
835 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
836 }
837 } else {
838 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
839 usb_kill_anchored_urbs(&data->isoc_anchor);
840
841 __set_isoc_interface(hdev, 0);
842 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
843 usb_autopm_put_interface(data->isoc);
844 }
845 }
846
847 static void btusb_waker(struct work_struct *work)
848 {
849 struct btusb_data *data = container_of(work, struct btusb_data, waker);
850 int err;
851
852 err = usb_autopm_get_interface(data->intf);
853 if (err < 0)
854 return;
855
856 usb_autopm_put_interface(data->intf);
857 }
858
859 static int btusb_probe(struct usb_interface *intf,
860 const struct usb_device_id *id)
861 {
862 struct usb_endpoint_descriptor *ep_desc;
863 struct btusb_data *data;
864 struct hci_dev *hdev;
865 int i, err;
866
867 BT_DBG("intf %p id %p", intf, id);
868
869 /* interface numbers are hardcoded in the spec */
870 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
871 return -ENODEV;
872
873 if (!id->driver_info) {
874 const struct usb_device_id *match;
875 match = usb_match_id(intf, blacklist_table);
876 if (match)
877 id = match;
878 }
879
880 if (id->driver_info == BTUSB_IGNORE)
881 return -ENODEV;
882
883 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
884 return -ENODEV;
885
886 if (ignore_csr && id->driver_info & BTUSB_CSR)
887 return -ENODEV;
888
889 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
890 return -ENODEV;
891
892 data = kzalloc(sizeof(*data), GFP_KERNEL);
893 if (!data)
894 return -ENOMEM;
895
896 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
897 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
898
899 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
900 data->intr_ep = ep_desc;
901 continue;
902 }
903
904 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
905 data->bulk_tx_ep = ep_desc;
906 continue;
907 }
908
909 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
910 data->bulk_rx_ep = ep_desc;
911 continue;
912 }
913 }
914
915 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
916 kfree(data);
917 return -ENODEV;
918 }
919
920 data->cmdreq_type = USB_TYPE_CLASS;
921
922 data->udev = interface_to_usbdev(intf);
923 data->intf = intf;
924
925 spin_lock_init(&data->lock);
926
927 INIT_WORK(&data->work, btusb_work);
928 INIT_WORK(&data->waker, btusb_waker);
929 spin_lock_init(&data->txlock);
930
931 init_usb_anchor(&data->tx_anchor);
932 init_usb_anchor(&data->intr_anchor);
933 init_usb_anchor(&data->bulk_anchor);
934 init_usb_anchor(&data->isoc_anchor);
935 init_usb_anchor(&data->deferred);
936
937 hdev = hci_alloc_dev();
938 if (!hdev) {
939 kfree(data);
940 return -ENOMEM;
941 }
942
943 hdev->bus = HCI_USB;
944 hdev->driver_data = data;
945
946 data->hdev = hdev;
947
948 SET_HCIDEV_DEV(hdev, &intf->dev);
949
950 hdev->open = btusb_open;
951 hdev->close = btusb_close;
952 hdev->flush = btusb_flush;
953 hdev->send = btusb_send_frame;
954 hdev->destruct = btusb_destruct;
955 hdev->notify = btusb_notify;
956
957 hdev->owner = THIS_MODULE;
958
959 /* Interface numbers are hardcoded in the specification */
960 data->isoc = usb_ifnum_to_if(data->udev, 1);
961
962 if (!reset)
963 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
964
965 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
966 if (!disable_scofix)
967 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
968 }
969
970 if (id->driver_info & BTUSB_BROKEN_ISOC)
971 data->isoc = NULL;
972
973 if (id->driver_info & BTUSB_DIGIANSWER) {
974 data->cmdreq_type = USB_TYPE_VENDOR;
975 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
976 }
977
978 if (id->driver_info & BTUSB_CSR) {
979 struct usb_device *udev = data->udev;
980
981 /* Old firmware would otherwise execute USB reset */
982 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
983 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
984 }
985
986 if (id->driver_info & BTUSB_SNIFFER) {
987 struct usb_device *udev = data->udev;
988
989 /* New sniffer firmware has crippled HCI interface */
990 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
991 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
992
993 data->isoc = NULL;
994 }
995
996 if (id->driver_info & BTUSB_BCM92035) {
997 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
998 struct sk_buff *skb;
999
1000 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1001 if (skb) {
1002 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1003 skb_queue_tail(&hdev->driver_init, skb);
1004 }
1005 }
1006
1007 if (data->isoc) {
1008 err = usb_driver_claim_interface(&btusb_driver,
1009 data->isoc, data);
1010 if (err < 0) {
1011 hci_free_dev(hdev);
1012 kfree(data);
1013 return err;
1014 }
1015 }
1016
1017 err = hci_register_dev(hdev);
1018 if (err < 0) {
1019 hci_free_dev(hdev);
1020 kfree(data);
1021 return err;
1022 }
1023
1024 usb_set_intfdata(intf, data);
1025
1026 return 0;
1027 }
1028
1029 static void btusb_disconnect(struct usb_interface *intf)
1030 {
1031 struct btusb_data *data = usb_get_intfdata(intf);
1032 struct hci_dev *hdev;
1033
1034 BT_DBG("intf %p", intf);
1035
1036 if (!data)
1037 return;
1038
1039 hdev = data->hdev;
1040
1041 __hci_dev_hold(hdev);
1042
1043 usb_set_intfdata(data->intf, NULL);
1044
1045 if (data->isoc)
1046 usb_set_intfdata(data->isoc, NULL);
1047
1048 hci_unregister_dev(hdev);
1049
1050 if (intf == data->isoc)
1051 usb_driver_release_interface(&btusb_driver, data->intf);
1052 else if (data->isoc)
1053 usb_driver_release_interface(&btusb_driver, data->isoc);
1054
1055 __hci_dev_put(hdev);
1056
1057 hci_free_dev(hdev);
1058 }
1059
1060 #ifdef CONFIG_PM
1061 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1062 {
1063 struct btusb_data *data = usb_get_intfdata(intf);
1064
1065 BT_DBG("intf %p", intf);
1066
1067 if (data->suspend_count++)
1068 return 0;
1069
1070 spin_lock_irq(&data->txlock);
1071 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1072 set_bit(BTUSB_SUSPENDING, &data->flags);
1073 spin_unlock_irq(&data->txlock);
1074 } else {
1075 spin_unlock_irq(&data->txlock);
1076 data->suspend_count--;
1077 return -EBUSY;
1078 }
1079
1080 cancel_work_sync(&data->work);
1081
1082 btusb_stop_traffic(data);
1083 usb_kill_anchored_urbs(&data->tx_anchor);
1084
1085 return 0;
1086 }
1087
1088 static void play_deferred(struct btusb_data *data)
1089 {
1090 struct urb *urb;
1091 int err;
1092
1093 while ((urb = usb_get_from_anchor(&data->deferred))) {
1094 err = usb_submit_urb(urb, GFP_ATOMIC);
1095 if (err < 0)
1096 break;
1097
1098 data->tx_in_flight++;
1099 }
1100 usb_scuttle_anchored_urbs(&data->deferred);
1101 }
1102
1103 static int btusb_resume(struct usb_interface *intf)
1104 {
1105 struct btusb_data *data = usb_get_intfdata(intf);
1106 struct hci_dev *hdev = data->hdev;
1107 int err = 0;
1108
1109 BT_DBG("intf %p", intf);
1110
1111 if (--data->suspend_count)
1112 return 0;
1113
1114 if (!test_bit(HCI_RUNNING, &hdev->flags))
1115 goto done;
1116
1117 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1118 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1119 if (err < 0) {
1120 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1121 goto failed;
1122 }
1123 }
1124
1125 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1126 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1127 if (err < 0) {
1128 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1129 goto failed;
1130 }
1131
1132 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1133 }
1134
1135 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1136 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1137 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1138 else
1139 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1140 }
1141
1142 spin_lock_irq(&data->txlock);
1143 play_deferred(data);
1144 clear_bit(BTUSB_SUSPENDING, &data->flags);
1145 spin_unlock_irq(&data->txlock);
1146 schedule_work(&data->work);
1147
1148 return 0;
1149
1150 failed:
1151 usb_scuttle_anchored_urbs(&data->deferred);
1152 done:
1153 spin_lock_irq(&data->txlock);
1154 clear_bit(BTUSB_SUSPENDING, &data->flags);
1155 spin_unlock_irq(&data->txlock);
1156
1157 return err;
1158 }
1159 #endif
1160
1161 static struct usb_driver btusb_driver = {
1162 .name = "btusb",
1163 .probe = btusb_probe,
1164 .disconnect = btusb_disconnect,
1165 #ifdef CONFIG_PM
1166 .suspend = btusb_suspend,
1167 .resume = btusb_resume,
1168 #endif
1169 .id_table = btusb_table,
1170 .supports_autosuspend = 1,
1171 };
1172
1173 static int __init btusb_init(void)
1174 {
1175 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1176
1177 return usb_register(&btusb_driver);
1178 }
1179
1180 static void __exit btusb_exit(void)
1181 {
1182 usb_deregister(&btusb_driver);
1183 }
1184
1185 module_init(btusb_init);
1186 module_exit(btusb_exit);
1187
1188 module_param(ignore_dga, bool, 0644);
1189 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1190
1191 module_param(ignore_csr, bool, 0644);
1192 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1193
1194 module_param(ignore_sniffer, bool, 0644);
1195 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1196
1197 module_param(disable_scofix, bool, 0644);
1198 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1199
1200 module_param(force_scofix, bool, 0644);
1201 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1202
1203 module_param(reset, bool, 0644);
1204 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1205
1206 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1207 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1208 MODULE_VERSION(VERSION);
1209 MODULE_LICENSE("GPL");
kernel source for telekom puls (alcatel/mediatek)