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NFS: Fix panic after nfs_umount()
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / bluetooth / btusb.c
blobab3894f742c3002a90a98b89f116ab30c75cdb28
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 MacBookPro 7,1 */
63 { USB_DEVICE(0x05ac, 0x8213) },
64
65 /* Apple iMac11,1 */
66 { USB_DEVICE(0x05ac, 0x8215) },
67
68 /* Apple MacBookPro6,2 */
69 { USB_DEVICE(0x05ac, 0x8218) },
70
71 /* Apple MacBookAir3,1, MacBookAir3,2 */
72 { USB_DEVICE(0x05ac, 0x821b) },
73
74 /* AVM BlueFRITZ! USB v2.0 */
75 { USB_DEVICE(0x057c, 0x3800) },
76
77 /* Bluetooth Ultraport Module from IBM */
78 { USB_DEVICE(0x04bf, 0x030a) },
79
80 /* ALPS Modules with non-standard id */
81 { USB_DEVICE(0x044e, 0x3001) },
82 { USB_DEVICE(0x044e, 0x3002) },
83
84 /* Ericsson with non-standard id */
85 { USB_DEVICE(0x0bdb, 0x1002) },
86
87 /* Canyon CN-BTU1 with HID interfaces */
88 { USB_DEVICE(0x0c10, 0x0000) },
89
90 { } /* Terminating entry */
91 };
92
93 MODULE_DEVICE_TABLE(usb, btusb_table);
94
95 static struct usb_device_id blacklist_table[] = {
96 /* CSR BlueCore devices */
97 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
98
99 /* Broadcom BCM2033 without firmware */
100 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
101
102 /* Broadcom BCM2035 */
103 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
104 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
105 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
106
107 /* Broadcom BCM2045 */
108 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
109 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
110
111 /* IBM/Lenovo ThinkPad with Broadcom chip */
112 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
113 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
114
115 /* HP laptop with Broadcom chip */
116 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
117
118 /* Dell laptop with Broadcom chip */
119 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
120
121 /* Dell Wireless 370 and 410 devices */
122 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
123 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
124
125 /* Belkin F8T012 and F8T013 devices */
126 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
127 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
128
129 /* Asus WL-BTD202 device */
130 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
131
132 /* Kensington Bluetooth USB adapter */
133 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
134
135 /* RTX Telecom based adapters with buggy SCO support */
136 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
137 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
138
139 /* CONWISE Technology based adapters with buggy SCO support */
140 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
141
142 /* Digianswer devices */
143 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
144 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
145
146 /* CSR BlueCore Bluetooth Sniffer */
147 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
148
149 /* Frontline ComProbe Bluetooth Sniffer */
150 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
151
152 { } /* Terminating entry */
153 };
154
155 #define BTUSB_MAX_ISOC_FRAMES 10
156
157 #define BTUSB_INTR_RUNNING 0
158 #define BTUSB_BULK_RUNNING 1
159 #define BTUSB_ISOC_RUNNING 2
160 #define BTUSB_SUSPENDING 3
161 #define BTUSB_DID_ISO_RESUME 4
162
163 struct btusb_data {
164 struct hci_dev *hdev;
165 struct usb_device *udev;
166 struct usb_interface *intf;
167 struct usb_interface *isoc;
168
169 spinlock_t lock;
170
171 unsigned long flags;
172
173 struct work_struct work;
174 struct work_struct waker;
175
176 struct usb_anchor tx_anchor;
177 struct usb_anchor intr_anchor;
178 struct usb_anchor bulk_anchor;
179 struct usb_anchor isoc_anchor;
180 struct usb_anchor deferred;
181 int tx_in_flight;
182 spinlock_t txlock;
183
184 struct usb_endpoint_descriptor *intr_ep;
185 struct usb_endpoint_descriptor *bulk_tx_ep;
186 struct usb_endpoint_descriptor *bulk_rx_ep;
187 struct usb_endpoint_descriptor *isoc_tx_ep;
188 struct usb_endpoint_descriptor *isoc_rx_ep;
189
190 __u8 cmdreq_type;
191
192 unsigned int sco_num;
193 int isoc_altsetting;
194 int suspend_count;
195 };
196
197 static int inc_tx(struct btusb_data *data)
198 {
199 unsigned long flags;
200 int rv;
201
202 spin_lock_irqsave(&data->txlock, flags);
203 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
204 if (!rv)
205 data->tx_in_flight++;
206 spin_unlock_irqrestore(&data->txlock, flags);
207
208 return rv;
209 }
210
211 static void btusb_intr_complete(struct urb *urb)
212 {
213 struct hci_dev *hdev = urb->context;
214 struct btusb_data *data = hdev->driver_data;
215 int err;
216
217 BT_DBG("%s urb %p status %d count %d", hdev->name,
218 urb, urb->status, urb->actual_length);
219
220 if (!test_bit(HCI_RUNNING, &hdev->flags))
221 return;
222
223 if (urb->status == 0) {
224 hdev->stat.byte_rx += urb->actual_length;
225
226 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
227 urb->transfer_buffer,
228 urb->actual_length) < 0) {
229 BT_ERR("%s corrupted event packet", hdev->name);
230 hdev->stat.err_rx++;
231 }
232 }
233
234 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
235 return;
236
237 usb_mark_last_busy(data->udev);
238 usb_anchor_urb(urb, &data->intr_anchor);
239
240 err = usb_submit_urb(urb, GFP_ATOMIC);
241 if (err < 0) {
242 BT_ERR("%s urb %p failed to resubmit (%d)",
243 hdev->name, urb, -err);
244 usb_unanchor_urb(urb);
245 }
246 }
247
248 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
249 {
250 struct btusb_data *data = hdev->driver_data;
251 struct urb *urb;
252 unsigned char *buf;
253 unsigned int pipe;
254 int err, size;
255
256 BT_DBG("%s", hdev->name);
257
258 if (!data->intr_ep)
259 return -ENODEV;
260
261 urb = usb_alloc_urb(0, mem_flags);
262 if (!urb)
263 return -ENOMEM;
264
265 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
266
267 buf = kmalloc(size, mem_flags);
268 if (!buf) {
269 usb_free_urb(urb);
270 return -ENOMEM;
271 }
272
273 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
274
275 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
276 btusb_intr_complete, hdev,
277 data->intr_ep->bInterval);
278
279 urb->transfer_flags |= URB_FREE_BUFFER;
280
281 usb_anchor_urb(urb, &data->intr_anchor);
282
283 err = usb_submit_urb(urb, mem_flags);
284 if (err < 0) {
285 BT_ERR("%s urb %p submission failed (%d)",
286 hdev->name, urb, -err);
287 usb_unanchor_urb(urb);
288 }
289
290 usb_free_urb(urb);
291
292 return err;
293 }
294
295 static void btusb_bulk_complete(struct urb *urb)
296 {
297 struct hci_dev *hdev = urb->context;
298 struct btusb_data *data = hdev->driver_data;
299 int err;
300
301 BT_DBG("%s urb %p status %d count %d", hdev->name,
302 urb, urb->status, urb->actual_length);
303
304 if (!test_bit(HCI_RUNNING, &hdev->flags))
305 return;
306
307 if (urb->status == 0) {
308 hdev->stat.byte_rx += urb->actual_length;
309
310 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
311 urb->transfer_buffer,
312 urb->actual_length) < 0) {
313 BT_ERR("%s corrupted ACL packet", hdev->name);
314 hdev->stat.err_rx++;
315 }
316 }
317
318 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
319 return;
320
321 usb_anchor_urb(urb, &data->bulk_anchor);
322 usb_mark_last_busy(data->udev);
323
324 err = usb_submit_urb(urb, GFP_ATOMIC);
325 if (err < 0) {
326 BT_ERR("%s urb %p failed to resubmit (%d)",
327 hdev->name, urb, -err);
328 usb_unanchor_urb(urb);
329 }
330 }
331
332 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
333 {
334 struct btusb_data *data = hdev->driver_data;
335 struct urb *urb;
336 unsigned char *buf;
337 unsigned int pipe;
338 int err, size = HCI_MAX_FRAME_SIZE;
339
340 BT_DBG("%s", hdev->name);
341
342 if (!data->bulk_rx_ep)
343 return -ENODEV;
344
345 urb = usb_alloc_urb(0, mem_flags);
346 if (!urb)
347 return -ENOMEM;
348
349 buf = kmalloc(size, mem_flags);
350 if (!buf) {
351 usb_free_urb(urb);
352 return -ENOMEM;
353 }
354
355 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
356
357 usb_fill_bulk_urb(urb, data->udev, pipe,
358 buf, size, btusb_bulk_complete, hdev);
359
360 urb->transfer_flags |= URB_FREE_BUFFER;
361
362 usb_mark_last_busy(data->udev);
363 usb_anchor_urb(urb, &data->bulk_anchor);
364
365 err = usb_submit_urb(urb, mem_flags);
366 if (err < 0) {
367 BT_ERR("%s urb %p submission failed (%d)",
368 hdev->name, urb, -err);
369 usb_unanchor_urb(urb);
370 }
371
372 usb_free_urb(urb);
373
374 return err;
375 }
376
377 static void btusb_isoc_complete(struct urb *urb)
378 {
379 struct hci_dev *hdev = urb->context;
380 struct btusb_data *data = hdev->driver_data;
381 int i, err;
382
383 BT_DBG("%s urb %p status %d count %d", hdev->name,
384 urb, urb->status, urb->actual_length);
385
386 if (!test_bit(HCI_RUNNING, &hdev->flags))
387 return;
388
389 if (urb->status == 0) {
390 for (i = 0; i < urb->number_of_packets; i++) {
391 unsigned int offset = urb->iso_frame_desc[i].offset;
392 unsigned int length = urb->iso_frame_desc[i].actual_length;
393
394 if (urb->iso_frame_desc[i].status)
395 continue;
396
397 hdev->stat.byte_rx += length;
398
399 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
400 urb->transfer_buffer + offset,
401 length) < 0) {
402 BT_ERR("%s corrupted SCO packet", hdev->name);
403 hdev->stat.err_rx++;
404 }
405 }
406 }
407
408 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
409 return;
410
411 usb_anchor_urb(urb, &data->isoc_anchor);
412
413 err = usb_submit_urb(urb, GFP_ATOMIC);
414 if (err < 0) {
415 BT_ERR("%s urb %p failed to resubmit (%d)",
416 hdev->name, urb, -err);
417 usb_unanchor_urb(urb);
418 }
419 }
420
421 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
422 {
423 int i, offset = 0;
424
425 BT_DBG("len %d mtu %d", len, mtu);
426
427 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
428 i++, offset += mtu, len -= mtu) {
429 urb->iso_frame_desc[i].offset = offset;
430 urb->iso_frame_desc[i].length = mtu;
431 }
432
433 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
434 urb->iso_frame_desc[i].offset = offset;
435 urb->iso_frame_desc[i].length = len;
436 i++;
437 }
438
439 urb->number_of_packets = i;
440 }
441
442 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
443 {
444 struct btusb_data *data = hdev->driver_data;
445 struct urb *urb;
446 unsigned char *buf;
447 unsigned int pipe;
448 int err, size;
449
450 BT_DBG("%s", hdev->name);
451
452 if (!data->isoc_rx_ep)
453 return -ENODEV;
454
455 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
456 if (!urb)
457 return -ENOMEM;
458
459 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
460 BTUSB_MAX_ISOC_FRAMES;
461
462 buf = kmalloc(size, mem_flags);
463 if (!buf) {
464 usb_free_urb(urb);
465 return -ENOMEM;
466 }
467
468 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
469
470 urb->dev = data->udev;
471 urb->pipe = pipe;
472 urb->context = hdev;
473 urb->complete = btusb_isoc_complete;
474 urb->interval = data->isoc_rx_ep->bInterval;
475
476 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
477 urb->transfer_buffer = buf;
478 urb->transfer_buffer_length = size;
479
480 __fill_isoc_descriptor(urb, size,
481 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
482
483 usb_anchor_urb(urb, &data->isoc_anchor);
484
485 err = usb_submit_urb(urb, mem_flags);
486 if (err < 0) {
487 BT_ERR("%s urb %p submission failed (%d)",
488 hdev->name, urb, -err);
489 usb_unanchor_urb(urb);
490 }
491
492 usb_free_urb(urb);
493
494 return err;
495 }
496
497 static void btusb_tx_complete(struct urb *urb)
498 {
499 struct sk_buff *skb = urb->context;
500 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
501 struct btusb_data *data = hdev->driver_data;
502
503 BT_DBG("%s urb %p status %d count %d", hdev->name,
504 urb, urb->status, urb->actual_length);
505
506 if (!test_bit(HCI_RUNNING, &hdev->flags))
507 goto done;
508
509 if (!urb->status)
510 hdev->stat.byte_tx += urb->transfer_buffer_length;
511 else
512 hdev->stat.err_tx++;
513
514 done:
515 spin_lock(&data->txlock);
516 data->tx_in_flight--;
517 spin_unlock(&data->txlock);
518
519 kfree(urb->setup_packet);
520
521 kfree_skb(skb);
522 }
523
524 static void btusb_isoc_tx_complete(struct urb *urb)
525 {
526 struct sk_buff *skb = urb->context;
527 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
528
529 BT_DBG("%s urb %p status %d count %d", hdev->name,
530 urb, urb->status, urb->actual_length);
531
532 if (!test_bit(HCI_RUNNING, &hdev->flags))
533 goto done;
534
535 if (!urb->status)
536 hdev->stat.byte_tx += urb->transfer_buffer_length;
537 else
538 hdev->stat.err_tx++;
539
540 done:
541 kfree(urb->setup_packet);
542
543 kfree_skb(skb);
544 }
545
546 static int btusb_open(struct hci_dev *hdev)
547 {
548 struct btusb_data *data = hdev->driver_data;
549 int err;
550
551 BT_DBG("%s", hdev->name);
552
553 err = usb_autopm_get_interface(data->intf);
554 if (err < 0)
555 return err;
556
557 data->intf->needs_remote_wakeup = 1;
558
559 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
560 goto done;
561
562 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
563 goto done;
564
565 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
566 if (err < 0)
567 goto failed;
568
569 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
570 if (err < 0) {
571 usb_kill_anchored_urbs(&data->intr_anchor);
572 goto failed;
573 }
574
575 set_bit(BTUSB_BULK_RUNNING, &data->flags);
576 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
577
578 done:
579 usb_autopm_put_interface(data->intf);
580 return 0;
581
582 failed:
583 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
584 clear_bit(HCI_RUNNING, &hdev->flags);
585 usb_autopm_put_interface(data->intf);
586 return err;
587 }
588
589 static void btusb_stop_traffic(struct btusb_data *data)
590 {
591 usb_kill_anchored_urbs(&data->intr_anchor);
592 usb_kill_anchored_urbs(&data->bulk_anchor);
593 usb_kill_anchored_urbs(&data->isoc_anchor);
594 }
595
596 static int btusb_close(struct hci_dev *hdev)
597 {
598 struct btusb_data *data = hdev->driver_data;
599 int err;
600
601 BT_DBG("%s", hdev->name);
602
603 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
604 return 0;
605
606 cancel_work_sync(&data->work);
607 cancel_work_sync(&data->waker);
608
609 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
610 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
611 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
612
613 btusb_stop_traffic(data);
614 err = usb_autopm_get_interface(data->intf);
615 if (err < 0)
616 goto failed;
617
618 data->intf->needs_remote_wakeup = 0;
619 usb_autopm_put_interface(data->intf);
620
621 failed:
622 usb_scuttle_anchored_urbs(&data->deferred);
623 return 0;
624 }
625
626 static int btusb_flush(struct hci_dev *hdev)
627 {
628 struct btusb_data *data = hdev->driver_data;
629
630 BT_DBG("%s", hdev->name);
631
632 usb_kill_anchored_urbs(&data->tx_anchor);
633
634 return 0;
635 }
636
637 static int btusb_send_frame(struct sk_buff *skb)
638 {
639 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
640 struct btusb_data *data = hdev->driver_data;
641 struct usb_ctrlrequest *dr;
642 struct urb *urb;
643 unsigned int pipe;
644 int err;
645
646 BT_DBG("%s", hdev->name);
647
648 if (!test_bit(HCI_RUNNING, &hdev->flags))
649 return -EBUSY;
650
651 switch (bt_cb(skb)->pkt_type) {
652 case HCI_COMMAND_PKT:
653 urb = usb_alloc_urb(0, GFP_ATOMIC);
654 if (!urb)
655 return -ENOMEM;
656
657 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
658 if (!dr) {
659 usb_free_urb(urb);
660 return -ENOMEM;
661 }
662
663 dr->bRequestType = data->cmdreq_type;
664 dr->bRequest = 0;
665 dr->wIndex = 0;
666 dr->wValue = 0;
667 dr->wLength = __cpu_to_le16(skb->len);
668
669 pipe = usb_sndctrlpipe(data->udev, 0x00);
670
671 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
672 skb->data, skb->len, btusb_tx_complete, skb);
673
674 hdev->stat.cmd_tx++;
675 break;
676
677 case HCI_ACLDATA_PKT:
678 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
679 return -ENODEV;
680
681 urb = usb_alloc_urb(0, GFP_ATOMIC);
682 if (!urb)
683 return -ENOMEM;
684
685 pipe = usb_sndbulkpipe(data->udev,
686 data->bulk_tx_ep->bEndpointAddress);
687
688 usb_fill_bulk_urb(urb, data->udev, pipe,
689 skb->data, skb->len, btusb_tx_complete, skb);
690
691 hdev->stat.acl_tx++;
692 break;
693
694 case HCI_SCODATA_PKT:
695 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
696 return -ENODEV;
697
698 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
699 if (!urb)
700 return -ENOMEM;
701
702 pipe = usb_sndisocpipe(data->udev,
703 data->isoc_tx_ep->bEndpointAddress);
704
705 urb->dev = data->udev;
706 urb->pipe = pipe;
707 urb->context = skb;
708 urb->complete = btusb_isoc_tx_complete;
709 urb->interval = data->isoc_tx_ep->bInterval;
710
711 urb->transfer_flags = URB_ISO_ASAP;
712 urb->transfer_buffer = skb->data;
713 urb->transfer_buffer_length = skb->len;
714
715 __fill_isoc_descriptor(urb, skb->len,
716 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
717
718 hdev->stat.sco_tx++;
719 goto skip_waking;
720
721 default:
722 return -EILSEQ;
723 }
724
725 err = inc_tx(data);
726 if (err) {
727 usb_anchor_urb(urb, &data->deferred);
728 schedule_work(&data->waker);
729 err = 0;
730 goto done;
731 }
732
733 skip_waking:
734 usb_anchor_urb(urb, &data->tx_anchor);
735
736 err = usb_submit_urb(urb, GFP_ATOMIC);
737 if (err < 0) {
738 BT_ERR("%s urb %p submission failed", hdev->name, urb);
739 kfree(urb->setup_packet);
740 usb_unanchor_urb(urb);
741 } else {
742 usb_mark_last_busy(data->udev);
743 }
744
745 usb_free_urb(urb);
746
747 done:
748 return err;
749 }
750
751 static void btusb_destruct(struct hci_dev *hdev)
752 {
753 struct btusb_data *data = hdev->driver_data;
754
755 BT_DBG("%s", hdev->name);
756
757 kfree(data);
758 }
759
760 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
761 {
762 struct btusb_data *data = hdev->driver_data;
763
764 BT_DBG("%s evt %d", hdev->name, evt);
765
766 if (hdev->conn_hash.sco_num != data->sco_num) {
767 data->sco_num = hdev->conn_hash.sco_num;
768 schedule_work(&data->work);
769 }
770 }
771
772 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
773 {
774 struct btusb_data *data = hdev->driver_data;
775 struct usb_interface *intf = data->isoc;
776 struct usb_endpoint_descriptor *ep_desc;
777 int i, err;
778
779 if (!data->isoc)
780 return -ENODEV;
781
782 err = usb_set_interface(data->udev, 1, altsetting);
783 if (err < 0) {
784 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
785 return err;
786 }
787
788 data->isoc_altsetting = altsetting;
789
790 data->isoc_tx_ep = NULL;
791 data->isoc_rx_ep = NULL;
792
793 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
794 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
795
796 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
797 data->isoc_tx_ep = ep_desc;
798 continue;
799 }
800
801 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
802 data->isoc_rx_ep = ep_desc;
803 continue;
804 }
805 }
806
807 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
808 BT_ERR("%s invalid SCO descriptors", hdev->name);
809 return -ENODEV;
810 }
811
812 return 0;
813 }
814
815 static void btusb_work(struct work_struct *work)
816 {
817 struct btusb_data *data = container_of(work, struct btusb_data, work);
818 struct hci_dev *hdev = data->hdev;
819 int err;
820
821 if (hdev->conn_hash.sco_num > 0) {
822 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
823 err = usb_autopm_get_interface(data->isoc);
824 if (err < 0) {
825 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
826 usb_kill_anchored_urbs(&data->isoc_anchor);
827 return;
828 }
829
830 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
831 }
832 if (data->isoc_altsetting != 2) {
833 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
834 usb_kill_anchored_urbs(&data->isoc_anchor);
835
836 if (__set_isoc_interface(hdev, 2) < 0)
837 return;
838 }
839
840 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
841 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
842 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
843 else
844 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
845 }
846 } else {
847 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
848 usb_kill_anchored_urbs(&data->isoc_anchor);
849
850 __set_isoc_interface(hdev, 0);
851 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
852 usb_autopm_put_interface(data->isoc);
853 }
854 }
855
856 static void btusb_waker(struct work_struct *work)
857 {
858 struct btusb_data *data = container_of(work, struct btusb_data, waker);
859 int err;
860
861 err = usb_autopm_get_interface(data->intf);
862 if (err < 0)
863 return;
864
865 usb_autopm_put_interface(data->intf);
866 }
867
868 static int btusb_probe(struct usb_interface *intf,
869 const struct usb_device_id *id)
870 {
871 struct usb_endpoint_descriptor *ep_desc;
872 struct btusb_data *data;
873 struct hci_dev *hdev;
874 int i, err;
875
876 BT_DBG("intf %p id %p", intf, id);
877
878 /* interface numbers are hardcoded in the spec */
879 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
880 return -ENODEV;
881
882 if (!id->driver_info) {
883 const struct usb_device_id *match;
884 match = usb_match_id(intf, blacklist_table);
885 if (match)
886 id = match;
887 }
888
889 if (id->driver_info == BTUSB_IGNORE)
890 return -ENODEV;
891
892 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
893 return -ENODEV;
894
895 if (ignore_csr && id->driver_info & BTUSB_CSR)
896 return -ENODEV;
897
898 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
899 return -ENODEV;
900
901 data = kzalloc(sizeof(*data), GFP_KERNEL);
902 if (!data)
903 return -ENOMEM;
904
905 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
906 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
907
908 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
909 data->intr_ep = ep_desc;
910 continue;
911 }
912
913 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
914 data->bulk_tx_ep = ep_desc;
915 continue;
916 }
917
918 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
919 data->bulk_rx_ep = ep_desc;
920 continue;
921 }
922 }
923
924 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
925 kfree(data);
926 return -ENODEV;
927 }
928
929 data->cmdreq_type = USB_TYPE_CLASS;
930
931 data->udev = interface_to_usbdev(intf);
932 data->intf = intf;
933
934 spin_lock_init(&data->lock);
935
936 INIT_WORK(&data->work, btusb_work);
937 INIT_WORK(&data->waker, btusb_waker);
938 spin_lock_init(&data->txlock);
939
940 init_usb_anchor(&data->tx_anchor);
941 init_usb_anchor(&data->intr_anchor);
942 init_usb_anchor(&data->bulk_anchor);
943 init_usb_anchor(&data->isoc_anchor);
944 init_usb_anchor(&data->deferred);
945
946 hdev = hci_alloc_dev();
947 if (!hdev) {
948 kfree(data);
949 return -ENOMEM;
950 }
951
952 hdev->bus = HCI_USB;
953 hdev->driver_data = data;
954
955 data->hdev = hdev;
956
957 SET_HCIDEV_DEV(hdev, &intf->dev);
958
959 hdev->open = btusb_open;
960 hdev->close = btusb_close;
961 hdev->flush = btusb_flush;
962 hdev->send = btusb_send_frame;
963 hdev->destruct = btusb_destruct;
964 hdev->notify = btusb_notify;
965
966 hdev->owner = THIS_MODULE;
967
968 /* Interface numbers are hardcoded in the specification */
969 data->isoc = usb_ifnum_to_if(data->udev, 1);
970
971 if (!reset)
972 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
973
974 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
975 if (!disable_scofix)
976 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
977 }
978
979 if (id->driver_info & BTUSB_BROKEN_ISOC)
980 data->isoc = NULL;
981
982 if (id->driver_info & BTUSB_DIGIANSWER) {
983 data->cmdreq_type = USB_TYPE_VENDOR;
984 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
985 }
986
987 if (id->driver_info & BTUSB_CSR) {
988 struct usb_device *udev = data->udev;
989
990 /* Old firmware would otherwise execute USB reset */
991 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
992 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
993 }
994
995 if (id->driver_info & BTUSB_SNIFFER) {
996 struct usb_device *udev = data->udev;
997
998 /* New sniffer firmware has crippled HCI interface */
999 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1000 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1001
1002 data->isoc = NULL;
1003 }
1004
1005 if (id->driver_info & BTUSB_BCM92035) {
1006 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1007 struct sk_buff *skb;
1008
1009 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1010 if (skb) {
1011 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1012 skb_queue_tail(&hdev->driver_init, skb);
1013 }
1014 }
1015
1016 if (data->isoc) {
1017 err = usb_driver_claim_interface(&btusb_driver,
1018 data->isoc, data);
1019 if (err < 0) {
1020 hci_free_dev(hdev);
1021 kfree(data);
1022 return err;
1023 }
1024 }
1025
1026 err = hci_register_dev(hdev);
1027 if (err < 0) {
1028 hci_free_dev(hdev);
1029 kfree(data);
1030 return err;
1031 }
1032
1033 usb_set_intfdata(intf, data);
1034
1035 usb_enable_autosuspend(interface_to_usbdev(intf));
1036
1037 return 0;
1038 }
1039
1040 static void btusb_disconnect(struct usb_interface *intf)
1041 {
1042 struct btusb_data *data = usb_get_intfdata(intf);
1043 struct hci_dev *hdev;
1044
1045 BT_DBG("intf %p", intf);
1046
1047 if (!data)
1048 return;
1049
1050 hdev = data->hdev;
1051
1052 __hci_dev_hold(hdev);
1053
1054 usb_set_intfdata(data->intf, NULL);
1055
1056 if (data->isoc)
1057 usb_set_intfdata(data->isoc, NULL);
1058
1059 hci_unregister_dev(hdev);
1060
1061 if (intf == data->isoc)
1062 usb_driver_release_interface(&btusb_driver, data->intf);
1063 else if (data->isoc)
1064 usb_driver_release_interface(&btusb_driver, data->isoc);
1065
1066 __hci_dev_put(hdev);
1067
1068 hci_free_dev(hdev);
1069 }
1070
1071 #ifdef CONFIG_PM
1072 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1073 {
1074 struct btusb_data *data = usb_get_intfdata(intf);
1075
1076 BT_DBG("intf %p", intf);
1077
1078 if (data->suspend_count++)
1079 return 0;
1080
1081 spin_lock_irq(&data->txlock);
1082 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1083 set_bit(BTUSB_SUSPENDING, &data->flags);
1084 spin_unlock_irq(&data->txlock);
1085 } else {
1086 spin_unlock_irq(&data->txlock);
1087 data->suspend_count--;
1088 return -EBUSY;
1089 }
1090
1091 cancel_work_sync(&data->work);
1092
1093 btusb_stop_traffic(data);
1094 usb_kill_anchored_urbs(&data->tx_anchor);
1095
1096 return 0;
1097 }
1098
1099 static void play_deferred(struct btusb_data *data)
1100 {
1101 struct urb *urb;
1102 int err;
1103
1104 while ((urb = usb_get_from_anchor(&data->deferred))) {
1105 err = usb_submit_urb(urb, GFP_ATOMIC);
1106 if (err < 0)
1107 break;
1108
1109 data->tx_in_flight++;
1110 }
1111 usb_scuttle_anchored_urbs(&data->deferred);
1112 }
1113
1114 static int btusb_resume(struct usb_interface *intf)
1115 {
1116 struct btusb_data *data = usb_get_intfdata(intf);
1117 struct hci_dev *hdev = data->hdev;
1118 int err = 0;
1119
1120 BT_DBG("intf %p", intf);
1121
1122 if (--data->suspend_count)
1123 return 0;
1124
1125 if (!test_bit(HCI_RUNNING, &hdev->flags))
1126 goto done;
1127
1128 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1129 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1130 if (err < 0) {
1131 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1132 goto failed;
1133 }
1134 }
1135
1136 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1137 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1138 if (err < 0) {
1139 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1140 goto failed;
1141 }
1142
1143 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1144 }
1145
1146 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1147 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1148 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1149 else
1150 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1151 }
1152
1153 spin_lock_irq(&data->txlock);
1154 play_deferred(data);
1155 clear_bit(BTUSB_SUSPENDING, &data->flags);
1156 spin_unlock_irq(&data->txlock);
1157 schedule_work(&data->work);
1158
1159 return 0;
1160
1161 failed:
1162 usb_scuttle_anchored_urbs(&data->deferred);
1163 done:
1164 spin_lock_irq(&data->txlock);
1165 clear_bit(BTUSB_SUSPENDING, &data->flags);
1166 spin_unlock_irq(&data->txlock);
1167
1168 return err;
1169 }
1170 #endif
1171
1172 static struct usb_driver btusb_driver = {
1173 .name = "btusb",
1174 .probe = btusb_probe,
1175 .disconnect = btusb_disconnect,
1176 #ifdef CONFIG_PM
1177 .suspend = btusb_suspend,
1178 .resume = btusb_resume,
1179 #endif
1180 .id_table = btusb_table,
1181 .supports_autosuspend = 1,
1182 };
1183
1184 static int __init btusb_init(void)
1185 {
1186 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1187
1188 return usb_register(&btusb_driver);
1189 }
1190
1191 static void __exit btusb_exit(void)
1192 {
1193 usb_deregister(&btusb_driver);
1194 }
1195
1196 module_init(btusb_init);
1197 module_exit(btusb_exit);
1198
1199 module_param(ignore_dga, bool, 0644);
1200 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1201
1202 module_param(ignore_csr, bool, 0644);
1203 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1204
1205 module_param(ignore_sniffer, bool, 0644);
1206 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1207
1208 module_param(disable_scofix, bool, 0644);
1209 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1210
1211 module_param(force_scofix, bool, 0644);
1212 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1213
1214 module_param(reset, bool, 0644);
1215 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1216
1217 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1218 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1219 MODULE_VERSION(VERSION);
1220 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree