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Bluetooth: Add MacBookAir3,1(2) support
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / bluetooth / btusb.c
blob75185a6fbe7f99a899b87b8a0ee01f257d3d830c
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 /* Apple MacBookPro8,2 */
75 { USB_DEVICE(0x05ac, 0x821a) },
76
77 /* AVM BlueFRITZ! USB v2.0 */
78 { USB_DEVICE(0x057c, 0x3800) },
79
80 /* Bluetooth Ultraport Module from IBM */
81 { USB_DEVICE(0x04bf, 0x030a) },
82
83 /* ALPS Modules with non-standard id */
84 { USB_DEVICE(0x044e, 0x3001) },
85 { USB_DEVICE(0x044e, 0x3002) },
86
87 /* Ericsson with non-standard id */
88 { USB_DEVICE(0x0bdb, 0x1002) },
89
90 /* Canyon CN-BTU1 with HID interfaces */
91 { USB_DEVICE(0x0c10, 0x0000) },
92
93 { } /* Terminating entry */
94 };
95
96 MODULE_DEVICE_TABLE(usb, btusb_table);
97
98 static struct usb_device_id blacklist_table[] = {
99 /* CSR BlueCore devices */
100 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
101
102 /* Broadcom BCM2033 without firmware */
103 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
104
105 /* Broadcom BCM2035 */
106 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
107 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
108 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
109
110 /* Broadcom BCM2045 */
111 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
112 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
113
114 /* IBM/Lenovo ThinkPad with Broadcom chip */
115 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
116 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
117
118 /* HP laptop with Broadcom chip */
119 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
120
121 /* Dell laptop with Broadcom chip */
122 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
123
124 /* Dell Wireless 370 and 410 devices */
125 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
126 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
127
128 /* Belkin F8T012 and F8T013 devices */
129 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
130 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
131
132 /* Asus WL-BTD202 device */
133 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
134
135 /* Kensington Bluetooth USB adapter */
136 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
137
138 /* RTX Telecom based adapters with buggy SCO support */
139 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
140 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
141
142 /* CONWISE Technology based adapters with buggy SCO support */
143 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
144
145 /* Digianswer devices */
146 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
147 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
148
149 /* CSR BlueCore Bluetooth Sniffer */
150 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
151
152 /* Frontline ComProbe Bluetooth Sniffer */
153 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
154
155 { } /* Terminating entry */
156 };
157
158 #define BTUSB_MAX_ISOC_FRAMES 10
159
160 #define BTUSB_INTR_RUNNING 0
161 #define BTUSB_BULK_RUNNING 1
162 #define BTUSB_ISOC_RUNNING 2
163 #define BTUSB_SUSPENDING 3
164
165 struct btusb_data {
166 struct hci_dev *hdev;
167 struct usb_device *udev;
168 struct usb_interface *intf;
169 struct usb_interface *isoc;
170
171 spinlock_t lock;
172
173 unsigned long flags;
174
175 struct work_struct work;
176 struct work_struct waker;
177
178 struct usb_anchor tx_anchor;
179 struct usb_anchor intr_anchor;
180 struct usb_anchor bulk_anchor;
181 struct usb_anchor isoc_anchor;
182 struct usb_anchor deferred;
183 int tx_in_flight;
184 spinlock_t txlock;
185
186 struct usb_endpoint_descriptor *intr_ep;
187 struct usb_endpoint_descriptor *bulk_tx_ep;
188 struct usb_endpoint_descriptor *bulk_rx_ep;
189 struct usb_endpoint_descriptor *isoc_tx_ep;
190 struct usb_endpoint_descriptor *isoc_rx_ep;
191
192 __u8 cmdreq_type;
193
194 unsigned int sco_num;
195 int isoc_altsetting;
196 int suspend_count;
197 int did_iso_resume:1;
198 };
199
200 static int inc_tx(struct btusb_data *data)
201 {
202 unsigned long flags;
203 int rv;
204
205 spin_lock_irqsave(&data->txlock, flags);
206 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
207 if (!rv)
208 data->tx_in_flight++;
209 spin_unlock_irqrestore(&data->txlock, flags);
210
211 return rv;
212 }
213
214 static void btusb_intr_complete(struct urb *urb)
215 {
216 struct hci_dev *hdev = urb->context;
217 struct btusb_data *data = hdev->driver_data;
218 int err;
219
220 BT_DBG("%s urb %p status %d count %d", hdev->name,
221 urb, urb->status, urb->actual_length);
222
223 if (!test_bit(HCI_RUNNING, &hdev->flags))
224 return;
225
226 if (urb->status == 0) {
227 hdev->stat.byte_rx += urb->actual_length;
228
229 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
230 urb->transfer_buffer,
231 urb->actual_length) < 0) {
232 BT_ERR("%s corrupted event packet", hdev->name);
233 hdev->stat.err_rx++;
234 }
235 }
236
237 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
238 return;
239
240 usb_mark_last_busy(data->udev);
241 usb_anchor_urb(urb, &data->intr_anchor);
242
243 err = usb_submit_urb(urb, GFP_ATOMIC);
244 if (err < 0) {
245 BT_ERR("%s urb %p failed to resubmit (%d)",
246 hdev->name, urb, -err);
247 usb_unanchor_urb(urb);
248 }
249 }
250
251 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
252 {
253 struct btusb_data *data = hdev->driver_data;
254 struct urb *urb;
255 unsigned char *buf;
256 unsigned int pipe;
257 int err, size;
258
259 BT_DBG("%s", hdev->name);
260
261 if (!data->intr_ep)
262 return -ENODEV;
263
264 urb = usb_alloc_urb(0, mem_flags);
265 if (!urb)
266 return -ENOMEM;
267
268 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
269
270 buf = kmalloc(size, mem_flags);
271 if (!buf) {
272 usb_free_urb(urb);
273 return -ENOMEM;
274 }
275
276 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
277
278 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
279 btusb_intr_complete, hdev,
280 data->intr_ep->bInterval);
281
282 urb->transfer_flags |= URB_FREE_BUFFER;
283
284 usb_anchor_urb(urb, &data->intr_anchor);
285
286 err = usb_submit_urb(urb, mem_flags);
287 if (err < 0) {
288 BT_ERR("%s urb %p submission failed (%d)",
289 hdev->name, urb, -err);
290 usb_unanchor_urb(urb);
291 }
292
293 usb_free_urb(urb);
294
295 return err;
296 }
297
298 static void btusb_bulk_complete(struct urb *urb)
299 {
300 struct hci_dev *hdev = urb->context;
301 struct btusb_data *data = hdev->driver_data;
302 int err;
303
304 BT_DBG("%s urb %p status %d count %d", hdev->name,
305 urb, urb->status, urb->actual_length);
306
307 if (!test_bit(HCI_RUNNING, &hdev->flags))
308 return;
309
310 if (urb->status == 0) {
311 hdev->stat.byte_rx += urb->actual_length;
312
313 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
314 urb->transfer_buffer,
315 urb->actual_length) < 0) {
316 BT_ERR("%s corrupted ACL packet", hdev->name);
317 hdev->stat.err_rx++;
318 }
319 }
320
321 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
322 return;
323
324 usb_anchor_urb(urb, &data->bulk_anchor);
325 usb_mark_last_busy(data->udev);
326
327 err = usb_submit_urb(urb, GFP_ATOMIC);
328 if (err < 0) {
329 BT_ERR("%s urb %p failed to resubmit (%d)",
330 hdev->name, urb, -err);
331 usb_unanchor_urb(urb);
332 }
333 }
334
335 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
336 {
337 struct btusb_data *data = hdev->driver_data;
338 struct urb *urb;
339 unsigned char *buf;
340 unsigned int pipe;
341 int err, size = HCI_MAX_FRAME_SIZE;
342
343 BT_DBG("%s", hdev->name);
344
345 if (!data->bulk_rx_ep)
346 return -ENODEV;
347
348 urb = usb_alloc_urb(0, mem_flags);
349 if (!urb)
350 return -ENOMEM;
351
352 buf = kmalloc(size, mem_flags);
353 if (!buf) {
354 usb_free_urb(urb);
355 return -ENOMEM;
356 }
357
358 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
359
360 usb_fill_bulk_urb(urb, data->udev, pipe,
361 buf, size, btusb_bulk_complete, hdev);
362
363 urb->transfer_flags |= URB_FREE_BUFFER;
364
365 usb_mark_last_busy(data->udev);
366 usb_anchor_urb(urb, &data->bulk_anchor);
367
368 err = usb_submit_urb(urb, mem_flags);
369 if (err < 0) {
370 BT_ERR("%s urb %p submission failed (%d)",
371 hdev->name, urb, -err);
372 usb_unanchor_urb(urb);
373 }
374
375 usb_free_urb(urb);
376
377 return err;
378 }
379
380 static void btusb_isoc_complete(struct urb *urb)
381 {
382 struct hci_dev *hdev = urb->context;
383 struct btusb_data *data = hdev->driver_data;
384 int i, err;
385
386 BT_DBG("%s urb %p status %d count %d", hdev->name,
387 urb, urb->status, urb->actual_length);
388
389 if (!test_bit(HCI_RUNNING, &hdev->flags))
390 return;
391
392 if (urb->status == 0) {
393 for (i = 0; i < urb->number_of_packets; i++) {
394 unsigned int offset = urb->iso_frame_desc[i].offset;
395 unsigned int length = urb->iso_frame_desc[i].actual_length;
396
397 if (urb->iso_frame_desc[i].status)
398 continue;
399
400 hdev->stat.byte_rx += length;
401
402 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
403 urb->transfer_buffer + offset,
404 length) < 0) {
405 BT_ERR("%s corrupted SCO packet", hdev->name);
406 hdev->stat.err_rx++;
407 }
408 }
409 }
410
411 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
412 return;
413
414 usb_anchor_urb(urb, &data->isoc_anchor);
415
416 err = usb_submit_urb(urb, GFP_ATOMIC);
417 if (err < 0) {
418 BT_ERR("%s urb %p failed to resubmit (%d)",
419 hdev->name, urb, -err);
420 usb_unanchor_urb(urb);
421 }
422 }
423
424 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
425 {
426 int i, offset = 0;
427
428 BT_DBG("len %d mtu %d", len, mtu);
429
430 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
431 i++, offset += mtu, len -= mtu) {
432 urb->iso_frame_desc[i].offset = offset;
433 urb->iso_frame_desc[i].length = mtu;
434 }
435
436 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
437 urb->iso_frame_desc[i].offset = offset;
438 urb->iso_frame_desc[i].length = len;
439 i++;
440 }
441
442 urb->number_of_packets = i;
443 }
444
445 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
446 {
447 struct btusb_data *data = hdev->driver_data;
448 struct urb *urb;
449 unsigned char *buf;
450 unsigned int pipe;
451 int err, size;
452
453 BT_DBG("%s", hdev->name);
454
455 if (!data->isoc_rx_ep)
456 return -ENODEV;
457
458 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
459 if (!urb)
460 return -ENOMEM;
461
462 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
463 BTUSB_MAX_ISOC_FRAMES;
464
465 buf = kmalloc(size, mem_flags);
466 if (!buf) {
467 usb_free_urb(urb);
468 return -ENOMEM;
469 }
470
471 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
472
473 urb->dev = data->udev;
474 urb->pipe = pipe;
475 urb->context = hdev;
476 urb->complete = btusb_isoc_complete;
477 urb->interval = data->isoc_rx_ep->bInterval;
478
479 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
480 urb->transfer_buffer = buf;
481 urb->transfer_buffer_length = size;
482
483 __fill_isoc_descriptor(urb, size,
484 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
485
486 usb_anchor_urb(urb, &data->isoc_anchor);
487
488 err = usb_submit_urb(urb, mem_flags);
489 if (err < 0) {
490 BT_ERR("%s urb %p submission failed (%d)",
491 hdev->name, urb, -err);
492 usb_unanchor_urb(urb);
493 }
494
495 usb_free_urb(urb);
496
497 return err;
498 }
499
500 static void btusb_tx_complete(struct urb *urb)
501 {
502 struct sk_buff *skb = urb->context;
503 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
504 struct btusb_data *data = hdev->driver_data;
505
506 BT_DBG("%s urb %p status %d count %d", hdev->name,
507 urb, urb->status, urb->actual_length);
508
509 if (!test_bit(HCI_RUNNING, &hdev->flags))
510 goto done;
511
512 if (!urb->status)
513 hdev->stat.byte_tx += urb->transfer_buffer_length;
514 else
515 hdev->stat.err_tx++;
516
517 done:
518 spin_lock(&data->txlock);
519 data->tx_in_flight--;
520 spin_unlock(&data->txlock);
521
522 kfree(urb->setup_packet);
523
524 kfree_skb(skb);
525 }
526
527 static void btusb_isoc_tx_complete(struct urb *urb)
528 {
529 struct sk_buff *skb = urb->context;
530 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
531
532 BT_DBG("%s urb %p status %d count %d", hdev->name,
533 urb, urb->status, urb->actual_length);
534
535 if (!test_bit(HCI_RUNNING, &hdev->flags))
536 goto done;
537
538 if (!urb->status)
539 hdev->stat.byte_tx += urb->transfer_buffer_length;
540 else
541 hdev->stat.err_tx++;
542
543 done:
544 kfree(urb->setup_packet);
545
546 kfree_skb(skb);
547 }
548
549 static int btusb_open(struct hci_dev *hdev)
550 {
551 struct btusb_data *data = hdev->driver_data;
552 int err;
553
554 BT_DBG("%s", hdev->name);
555
556 err = usb_autopm_get_interface(data->intf);
557 if (err < 0)
558 return err;
559
560 data->intf->needs_remote_wakeup = 1;
561
562 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
563 goto done;
564
565 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
566 goto done;
567
568 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
569 if (err < 0)
570 goto failed;
571
572 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
573 if (err < 0) {
574 usb_kill_anchored_urbs(&data->intr_anchor);
575 goto failed;
576 }
577
578 set_bit(BTUSB_BULK_RUNNING, &data->flags);
579 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
580
581 done:
582 usb_autopm_put_interface(data->intf);
583 return 0;
584
585 failed:
586 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
587 clear_bit(HCI_RUNNING, &hdev->flags);
588 usb_autopm_put_interface(data->intf);
589 return err;
590 }
591
592 static void btusb_stop_traffic(struct btusb_data *data)
593 {
594 usb_kill_anchored_urbs(&data->intr_anchor);
595 usb_kill_anchored_urbs(&data->bulk_anchor);
596 usb_kill_anchored_urbs(&data->isoc_anchor);
597 }
598
599 static int btusb_close(struct hci_dev *hdev)
600 {
601 struct btusb_data *data = hdev->driver_data;
602 int err;
603
604 BT_DBG("%s", hdev->name);
605
606 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
607 return 0;
608
609 cancel_work_sync(&data->work);
610 cancel_work_sync(&data->waker);
611
612 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
613 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
614 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
615
616 btusb_stop_traffic(data);
617 err = usb_autopm_get_interface(data->intf);
618 if (err < 0)
619 goto failed;
620
621 data->intf->needs_remote_wakeup = 0;
622 usb_autopm_put_interface(data->intf);
623
624 failed:
625 usb_scuttle_anchored_urbs(&data->deferred);
626 return 0;
627 }
628
629 static int btusb_flush(struct hci_dev *hdev)
630 {
631 struct btusb_data *data = hdev->driver_data;
632
633 BT_DBG("%s", hdev->name);
634
635 usb_kill_anchored_urbs(&data->tx_anchor);
636
637 return 0;
638 }
639
640 static int btusb_send_frame(struct sk_buff *skb)
641 {
642 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
643 struct btusb_data *data = hdev->driver_data;
644 struct usb_ctrlrequest *dr;
645 struct urb *urb;
646 unsigned int pipe;
647 int err;
648
649 BT_DBG("%s", hdev->name);
650
651 if (!test_bit(HCI_RUNNING, &hdev->flags))
652 return -EBUSY;
653
654 switch (bt_cb(skb)->pkt_type) {
655 case HCI_COMMAND_PKT:
656 urb = usb_alloc_urb(0, GFP_ATOMIC);
657 if (!urb)
658 return -ENOMEM;
659
660 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
661 if (!dr) {
662 usb_free_urb(urb);
663 return -ENOMEM;
664 }
665
666 dr->bRequestType = data->cmdreq_type;
667 dr->bRequest = 0;
668 dr->wIndex = 0;
669 dr->wValue = 0;
670 dr->wLength = __cpu_to_le16(skb->len);
671
672 pipe = usb_sndctrlpipe(data->udev, 0x00);
673
674 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
675 skb->data, skb->len, btusb_tx_complete, skb);
676
677 hdev->stat.cmd_tx++;
678 break;
679
680 case HCI_ACLDATA_PKT:
681 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
682 return -ENODEV;
683
684 urb = usb_alloc_urb(0, GFP_ATOMIC);
685 if (!urb)
686 return -ENOMEM;
687
688 pipe = usb_sndbulkpipe(data->udev,
689 data->bulk_tx_ep->bEndpointAddress);
690
691 usb_fill_bulk_urb(urb, data->udev, pipe,
692 skb->data, skb->len, btusb_tx_complete, skb);
693
694 hdev->stat.acl_tx++;
695 break;
696
697 case HCI_SCODATA_PKT:
698 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
699 return -ENODEV;
700
701 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
702 if (!urb)
703 return -ENOMEM;
704
705 pipe = usb_sndisocpipe(data->udev,
706 data->isoc_tx_ep->bEndpointAddress);
707
708 urb->dev = data->udev;
709 urb->pipe = pipe;
710 urb->context = skb;
711 urb->complete = btusb_isoc_tx_complete;
712 urb->interval = data->isoc_tx_ep->bInterval;
713
714 urb->transfer_flags = URB_ISO_ASAP;
715 urb->transfer_buffer = skb->data;
716 urb->transfer_buffer_length = skb->len;
717
718 __fill_isoc_descriptor(urb, skb->len,
719 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
720
721 hdev->stat.sco_tx++;
722 goto skip_waking;
723
724 default:
725 return -EILSEQ;
726 }
727
728 err = inc_tx(data);
729 if (err) {
730 usb_anchor_urb(urb, &data->deferred);
731 schedule_work(&data->waker);
732 err = 0;
733 goto done;
734 }
735
736 skip_waking:
737 usb_anchor_urb(urb, &data->tx_anchor);
738
739 err = usb_submit_urb(urb, GFP_ATOMIC);
740 if (err < 0) {
741 BT_ERR("%s urb %p submission failed", hdev->name, urb);
742 kfree(urb->setup_packet);
743 usb_unanchor_urb(urb);
744 } else {
745 usb_mark_last_busy(data->udev);
746 }
747
748 usb_free_urb(urb);
749
750 done:
751 return err;
752 }
753
754 static void btusb_destruct(struct hci_dev *hdev)
755 {
756 struct btusb_data *data = hdev->driver_data;
757
758 BT_DBG("%s", hdev->name);
759
760 kfree(data);
761 }
762
763 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
764 {
765 struct btusb_data *data = hdev->driver_data;
766
767 BT_DBG("%s evt %d", hdev->name, evt);
768
769 if (hdev->conn_hash.sco_num != data->sco_num) {
770 data->sco_num = hdev->conn_hash.sco_num;
771 schedule_work(&data->work);
772 }
773 }
774
775 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
776 {
777 struct btusb_data *data = hdev->driver_data;
778 struct usb_interface *intf = data->isoc;
779 struct usb_endpoint_descriptor *ep_desc;
780 int i, err;
781
782 if (!data->isoc)
783 return -ENODEV;
784
785 err = usb_set_interface(data->udev, 1, altsetting);
786 if (err < 0) {
787 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
788 return err;
789 }
790
791 data->isoc_altsetting = altsetting;
792
793 data->isoc_tx_ep = NULL;
794 data->isoc_rx_ep = NULL;
795
796 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
797 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
798
799 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
800 data->isoc_tx_ep = ep_desc;
801 continue;
802 }
803
804 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
805 data->isoc_rx_ep = ep_desc;
806 continue;
807 }
808 }
809
810 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
811 BT_ERR("%s invalid SCO descriptors", hdev->name);
812 return -ENODEV;
813 }
814
815 return 0;
816 }
817
818 static void btusb_work(struct work_struct *work)
819 {
820 struct btusb_data *data = container_of(work, struct btusb_data, work);
821 struct hci_dev *hdev = data->hdev;
822 int err;
823
824 if (hdev->conn_hash.sco_num > 0) {
825 if (!data->did_iso_resume) {
826 err = usb_autopm_get_interface(data->isoc);
827 if (err < 0) {
828 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
829 usb_kill_anchored_urbs(&data->isoc_anchor);
830 return;
831 }
832
833 data->did_iso_resume = 1;
834 }
835 if (data->isoc_altsetting != 2) {
836 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
837 usb_kill_anchored_urbs(&data->isoc_anchor);
838
839 if (__set_isoc_interface(hdev, 2) < 0)
840 return;
841 }
842
843 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
844 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
845 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
846 else
847 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
848 }
849 } else {
850 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
851 usb_kill_anchored_urbs(&data->isoc_anchor);
852
853 __set_isoc_interface(hdev, 0);
854 if (data->did_iso_resume) {
855 data->did_iso_resume = 0;
856 usb_autopm_put_interface(data->isoc);
857 }
858 }
859 }
860
861 static void btusb_waker(struct work_struct *work)
862 {
863 struct btusb_data *data = container_of(work, struct btusb_data, waker);
864 int err;
865
866 err = usb_autopm_get_interface(data->intf);
867 if (err < 0)
868 return;
869
870 usb_autopm_put_interface(data->intf);
871 }
872
873 static int btusb_probe(struct usb_interface *intf,
874 const struct usb_device_id *id)
875 {
876 struct usb_endpoint_descriptor *ep_desc;
877 struct btusb_data *data;
878 struct hci_dev *hdev;
879 int i, err;
880
881 BT_DBG("intf %p id %p", intf, id);
882
883 /* interface numbers are hardcoded in the spec */
884 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
885 return -ENODEV;
886
887 if (!id->driver_info) {
888 const struct usb_device_id *match;
889 match = usb_match_id(intf, blacklist_table);
890 if (match)
891 id = match;
892 }
893
894 if (id->driver_info == BTUSB_IGNORE)
895 return -ENODEV;
896
897 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
898 return -ENODEV;
899
900 if (ignore_csr && id->driver_info & BTUSB_CSR)
901 return -ENODEV;
902
903 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
904 return -ENODEV;
905
906 data = kzalloc(sizeof(*data), GFP_KERNEL);
907 if (!data)
908 return -ENOMEM;
909
910 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
911 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
912
913 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
914 data->intr_ep = ep_desc;
915 continue;
916 }
917
918 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
919 data->bulk_tx_ep = ep_desc;
920 continue;
921 }
922
923 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
924 data->bulk_rx_ep = ep_desc;
925 continue;
926 }
927 }
928
929 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
930 kfree(data);
931 return -ENODEV;
932 }
933
934 data->cmdreq_type = USB_TYPE_CLASS;
935
936 data->udev = interface_to_usbdev(intf);
937 data->intf = intf;
938
939 spin_lock_init(&data->lock);
940
941 INIT_WORK(&data->work, btusb_work);
942 INIT_WORK(&data->waker, btusb_waker);
943 spin_lock_init(&data->txlock);
944
945 init_usb_anchor(&data->tx_anchor);
946 init_usb_anchor(&data->intr_anchor);
947 init_usb_anchor(&data->bulk_anchor);
948 init_usb_anchor(&data->isoc_anchor);
949 init_usb_anchor(&data->deferred);
950
951 hdev = hci_alloc_dev();
952 if (!hdev) {
953 kfree(data);
954 return -ENOMEM;
955 }
956
957 hdev->type = HCI_USB;
958 hdev->driver_data = data;
959
960 data->hdev = hdev;
961
962 SET_HCIDEV_DEV(hdev, &intf->dev);
963
964 hdev->open = btusb_open;
965 hdev->close = btusb_close;
966 hdev->flush = btusb_flush;
967 hdev->send = btusb_send_frame;
968 hdev->destruct = btusb_destruct;
969 hdev->notify = btusb_notify;
970
971 hdev->owner = THIS_MODULE;
972
973 /* Interface numbers are hardcoded in the specification */
974 data->isoc = usb_ifnum_to_if(data->udev, 1);
975
976 if (!reset)
977 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
978
979 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
980 if (!disable_scofix)
981 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
982 }
983
984 if (id->driver_info & BTUSB_BROKEN_ISOC)
985 data->isoc = NULL;
986
987 if (id->driver_info & BTUSB_DIGIANSWER) {
988 data->cmdreq_type = USB_TYPE_VENDOR;
989 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
990 }
991
992 if (id->driver_info & BTUSB_CSR) {
993 struct usb_device *udev = data->udev;
994
995 /* Old firmware would otherwise execute USB reset */
996 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
997 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
998 }
999
1000 if (id->driver_info & BTUSB_SNIFFER) {
1001 struct usb_device *udev = data->udev;
1002
1003 /* New sniffer firmware has crippled HCI interface */
1004 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1005 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1006
1007 data->isoc = NULL;
1008 }
1009
1010 if (id->driver_info & BTUSB_BCM92035) {
1011 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1012 struct sk_buff *skb;
1013
1014 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1015 if (skb) {
1016 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1017 skb_queue_tail(&hdev->driver_init, skb);
1018 }
1019 }
1020
1021 if (data->isoc) {
1022 err = usb_driver_claim_interface(&btusb_driver,
1023 data->isoc, data);
1024 if (err < 0) {
1025 hci_free_dev(hdev);
1026 kfree(data);
1027 return err;
1028 }
1029 }
1030
1031 err = hci_register_dev(hdev);
1032 if (err < 0) {
1033 hci_free_dev(hdev);
1034 kfree(data);
1035 return err;
1036 }
1037
1038 usb_set_intfdata(intf, data);
1039
1040 return 0;
1041 }
1042
1043 static void btusb_disconnect(struct usb_interface *intf)
1044 {
1045 struct btusb_data *data = usb_get_intfdata(intf);
1046 struct hci_dev *hdev;
1047
1048 BT_DBG("intf %p", intf);
1049
1050 if (!data)
1051 return;
1052
1053 hdev = data->hdev;
1054
1055 __hci_dev_hold(hdev);
1056
1057 usb_set_intfdata(data->intf, NULL);
1058
1059 if (data->isoc)
1060 usb_set_intfdata(data->isoc, NULL);
1061
1062 hci_unregister_dev(hdev);
1063
1064 if (intf == data->isoc)
1065 usb_driver_release_interface(&btusb_driver, data->intf);
1066 else if (data->isoc)
1067 usb_driver_release_interface(&btusb_driver, data->isoc);
1068
1069 __hci_dev_put(hdev);
1070
1071 hci_free_dev(hdev);
1072 }
1073
1074 #ifdef CONFIG_PM
1075 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1076 {
1077 struct btusb_data *data = usb_get_intfdata(intf);
1078
1079 BT_DBG("intf %p", intf);
1080
1081 if (data->suspend_count++)
1082 return 0;
1083
1084 spin_lock_irq(&data->txlock);
1085 if (!(interface_to_usbdev(intf)->auto_pm && data->tx_in_flight)) {
1086 set_bit(BTUSB_SUSPENDING, &data->flags);
1087 spin_unlock_irq(&data->txlock);
1088 } else {
1089 spin_unlock_irq(&data->txlock);
1090 data->suspend_count--;
1091 return -EBUSY;
1092 }
1093
1094 cancel_work_sync(&data->work);
1095
1096 btusb_stop_traffic(data);
1097 usb_kill_anchored_urbs(&data->tx_anchor);
1098
1099 return 0;
1100 }
1101
1102 static void play_deferred(struct btusb_data *data)
1103 {
1104 struct urb *urb;
1105 int err;
1106
1107 while ((urb = usb_get_from_anchor(&data->deferred))) {
1108 err = usb_submit_urb(urb, GFP_ATOMIC);
1109 if (err < 0)
1110 break;
1111
1112 data->tx_in_flight++;
1113 }
1114 usb_scuttle_anchored_urbs(&data->deferred);
1115 }
1116
1117 static int btusb_resume(struct usb_interface *intf)
1118 {
1119 struct btusb_data *data = usb_get_intfdata(intf);
1120 struct hci_dev *hdev = data->hdev;
1121 int err = 0;
1122
1123 BT_DBG("intf %p", intf);
1124
1125 if (--data->suspend_count)
1126 return 0;
1127
1128 if (!test_bit(HCI_RUNNING, &hdev->flags))
1129 goto done;
1130
1131 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1132 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1133 if (err < 0) {
1134 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1135 goto failed;
1136 }
1137 }
1138
1139 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1140 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1141 if (err < 0) {
1142 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1143 goto failed;
1144 }
1145
1146 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1147 }
1148
1149 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1150 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1151 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1152 else
1153 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1154 }
1155
1156 spin_lock_irq(&data->txlock);
1157 play_deferred(data);
1158 clear_bit(BTUSB_SUSPENDING, &data->flags);
1159 spin_unlock_irq(&data->txlock);
1160 schedule_work(&data->work);
1161
1162 return 0;
1163
1164 failed:
1165 usb_scuttle_anchored_urbs(&data->deferred);
1166 done:
1167 spin_lock_irq(&data->txlock);
1168 clear_bit(BTUSB_SUSPENDING, &data->flags);
1169 spin_unlock_irq(&data->txlock);
1170
1171 return err;
1172 }
1173 #endif
1174
1175 static struct usb_driver btusb_driver = {
1176 .name = "btusb",
1177 .probe = btusb_probe,
1178 .disconnect = btusb_disconnect,
1179 #ifdef CONFIG_PM
1180 .suspend = btusb_suspend,
1181 .resume = btusb_resume,
1182 #endif
1183 .id_table = btusb_table,
1184 .supports_autosuspend = 1,
1185 };
1186
1187 static int __init btusb_init(void)
1188 {
1189 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1190
1191 return usb_register(&btusb_driver);
1192 }
1193
1194 static void __exit btusb_exit(void)
1195 {
1196 usb_deregister(&btusb_driver);
1197 }
1198
1199 module_init(btusb_init);
1200 module_exit(btusb_exit);
1201
1202 module_param(ignore_dga, bool, 0644);
1203 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1204
1205 module_param(ignore_csr, bool, 0644);
1206 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1207
1208 module_param(ignore_sniffer, bool, 0644);
1209 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1210
1211 module_param(disable_scofix, bool, 0644);
1212 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1213
1214 module_param(force_scofix, bool, 0644);
1215 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1216
1217 module_param(reset, bool, 0644);
1218 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1219
1220 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1221 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1222 MODULE_VERSION(VERSION);
1223 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree