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mfd: Copy the device pointer to the twl4030-madc structure
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / bluetooth / btusb.c
blobb9af6dbb46d82071f4aed37e02ba9d1434303ac4
1 /*
2 *
3 * Generic Bluetooth USB driver
4 *
5 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
6 *
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/slab.h>
28 #include <linux/types.h>
29 #include <linux/sched.h>
30 #include <linux/errno.h>
31 #include <linux/skbuff.h>
32
33 #include <linux/usb.h>
34
35 #include <net/bluetooth/bluetooth.h>
36 #include <net/bluetooth/hci_core.h>
37
38 #define VERSION "0.6"
39
40 static int ignore_dga;
41 static int ignore_csr;
42 static int ignore_sniffer;
43 static int disable_scofix;
44 static int force_scofix;
45
46 static int reset = 1;
47
48 static struct usb_driver btusb_driver;
49
50 #define BTUSB_IGNORE 0x01
51 #define BTUSB_DIGIANSWER 0x02
52 #define BTUSB_CSR 0x04
53 #define BTUSB_SNIFFER 0x08
54 #define BTUSB_BCM92035 0x10
55 #define BTUSB_BROKEN_ISOC 0x20
56 #define BTUSB_WRONG_SCO_MTU 0x40
57 #define BTUSB_ATH3012 0x80
58
59 static struct usb_device_id btusb_table[] = {
60 /* Generic Bluetooth USB device */
61 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
62
63 /* Broadcom SoftSailing reporting vendor specific */
64 { USB_DEVICE(0x05ac, 0x21e1) },
65
66 /* Apple MacBookPro 7,1 */
67 { USB_DEVICE(0x05ac, 0x8213) },
68
69 /* Apple iMac11,1 */
70 { USB_DEVICE(0x05ac, 0x8215) },
71
72 /* Apple MacBookPro6,2 */
73 { USB_DEVICE(0x05ac, 0x8218) },
74
75 /* Apple MacBookAir3,1, MacBookAir3,2 */
76 { USB_DEVICE(0x05ac, 0x821b) },
77
78 /* Apple MacBookAir4,1 */
79 { USB_DEVICE(0x05ac, 0x821f) },
80
81 /* Apple MacBookPro8,2 */
82 { USB_DEVICE(0x05ac, 0x821a) },
83
84 /* Apple MacMini5,1 */
85 { USB_DEVICE(0x05ac, 0x8281) },
86
87 /* AVM BlueFRITZ! USB v2.0 */
88 { USB_DEVICE(0x057c, 0x3800) },
89
90 /* Bluetooth Ultraport Module from IBM */
91 { USB_DEVICE(0x04bf, 0x030a) },
92
93 /* ALPS Modules with non-standard id */
94 { USB_DEVICE(0x044e, 0x3001) },
95 { USB_DEVICE(0x044e, 0x3002) },
96
97 /* Ericsson with non-standard id */
98 { USB_DEVICE(0x0bdb, 0x1002) },
99
100 /* Canyon CN-BTU1 with HID interfaces */
101 { USB_DEVICE(0x0c10, 0x0000) },
102
103 { } /* Terminating entry */
104 };
105
106 MODULE_DEVICE_TABLE(usb, btusb_table);
107
108 static struct usb_device_id blacklist_table[] = {
109 /* CSR BlueCore devices */
110 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
111
112 /* Broadcom BCM2033 without firmware */
113 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
114
115 /* Atheros 3011 with sflash firmware */
116 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
117 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
118 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
119
120 /* Atheros AR9285 Malbec with sflash firmware */
121 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
122
123 /* Atheros 3012 with sflash firmware */
124 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
125
126 /* Atheros AR5BBU12 with sflash firmware */
127 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
128
129 /* Broadcom BCM2035 */
130 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
131 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
132 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
133
134 /* Broadcom BCM2045 */
135 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
136 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
137
138 /* IBM/Lenovo ThinkPad with Broadcom chip */
139 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
140 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
141
142 /* HP laptop with Broadcom chip */
143 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
144
145 /* Dell laptop with Broadcom chip */
146 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
147
148 /* Dell Wireless 370 and 410 devices */
149 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
150 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
151
152 /* Belkin F8T012 and F8T013 devices */
153 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
154 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
155
156 /* Asus WL-BTD202 device */
157 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
158
159 /* Kensington Bluetooth USB adapter */
160 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
161
162 /* RTX Telecom based adapters with buggy SCO support */
163 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
164 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
165
166 /* CONWISE Technology based adapters with buggy SCO support */
167 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
168
169 /* Digianswer devices */
170 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
171 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
172
173 /* CSR BlueCore Bluetooth Sniffer */
174 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
175
176 /* Frontline ComProbe Bluetooth Sniffer */
177 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
178
179 { } /* Terminating entry */
180 };
181
182 #define BTUSB_MAX_ISOC_FRAMES 10
183
184 #define BTUSB_INTR_RUNNING 0
185 #define BTUSB_BULK_RUNNING 1
186 #define BTUSB_ISOC_RUNNING 2
187 #define BTUSB_SUSPENDING 3
188 #define BTUSB_DID_ISO_RESUME 4
189
190 struct btusb_data {
191 struct hci_dev *hdev;
192 struct usb_device *udev;
193 struct usb_interface *intf;
194 struct usb_interface *isoc;
195
196 spinlock_t lock;
197
198 unsigned long flags;
199
200 struct work_struct work;
201 struct work_struct waker;
202
203 struct usb_anchor tx_anchor;
204 struct usb_anchor intr_anchor;
205 struct usb_anchor bulk_anchor;
206 struct usb_anchor isoc_anchor;
207 struct usb_anchor deferred;
208 int tx_in_flight;
209 spinlock_t txlock;
210
211 struct usb_endpoint_descriptor *intr_ep;
212 struct usb_endpoint_descriptor *bulk_tx_ep;
213 struct usb_endpoint_descriptor *bulk_rx_ep;
214 struct usb_endpoint_descriptor *isoc_tx_ep;
215 struct usb_endpoint_descriptor *isoc_rx_ep;
216
217 __u8 cmdreq_type;
218
219 unsigned int sco_num;
220 int isoc_altsetting;
221 int suspend_count;
222 };
223
224 static int inc_tx(struct btusb_data *data)
225 {
226 unsigned long flags;
227 int rv;
228
229 spin_lock_irqsave(&data->txlock, flags);
230 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
231 if (!rv)
232 data->tx_in_flight++;
233 spin_unlock_irqrestore(&data->txlock, flags);
234
235 return rv;
236 }
237
238 static void btusb_intr_complete(struct urb *urb)
239 {
240 struct hci_dev *hdev = urb->context;
241 struct btusb_data *data = hdev->driver_data;
242 int err;
243
244 BT_DBG("%s urb %p status %d count %d", hdev->name,
245 urb, urb->status, urb->actual_length);
246
247 if (!test_bit(HCI_RUNNING, &hdev->flags))
248 return;
249
250 if (urb->status == 0) {
251 hdev->stat.byte_rx += urb->actual_length;
252
253 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
254 urb->transfer_buffer,
255 urb->actual_length) < 0) {
256 BT_ERR("%s corrupted event packet", hdev->name);
257 hdev->stat.err_rx++;
258 }
259 }
260
261 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
262 return;
263
264 usb_mark_last_busy(data->udev);
265 usb_anchor_urb(urb, &data->intr_anchor);
266
267 err = usb_submit_urb(urb, GFP_ATOMIC);
268 if (err < 0) {
269 if (err != -EPERM)
270 BT_ERR("%s urb %p failed to resubmit (%d)",
271 hdev->name, urb, -err);
272 usb_unanchor_urb(urb);
273 }
274 }
275
276 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
277 {
278 struct btusb_data *data = hdev->driver_data;
279 struct urb *urb;
280 unsigned char *buf;
281 unsigned int pipe;
282 int err, size;
283
284 BT_DBG("%s", hdev->name);
285
286 if (!data->intr_ep)
287 return -ENODEV;
288
289 urb = usb_alloc_urb(0, mem_flags);
290 if (!urb)
291 return -ENOMEM;
292
293 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
294
295 buf = kmalloc(size, mem_flags);
296 if (!buf) {
297 usb_free_urb(urb);
298 return -ENOMEM;
299 }
300
301 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
302
303 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
304 btusb_intr_complete, hdev,
305 data->intr_ep->bInterval);
306
307 urb->transfer_flags |= URB_FREE_BUFFER;
308
309 usb_anchor_urb(urb, &data->intr_anchor);
310
311 err = usb_submit_urb(urb, mem_flags);
312 if (err < 0) {
313 BT_ERR("%s urb %p submission failed (%d)",
314 hdev->name, urb, -err);
315 usb_unanchor_urb(urb);
316 }
317
318 usb_free_urb(urb);
319
320 return err;
321 }
322
323 static void btusb_bulk_complete(struct urb *urb)
324 {
325 struct hci_dev *hdev = urb->context;
326 struct btusb_data *data = hdev->driver_data;
327 int err;
328
329 BT_DBG("%s urb %p status %d count %d", hdev->name,
330 urb, urb->status, urb->actual_length);
331
332 if (!test_bit(HCI_RUNNING, &hdev->flags))
333 return;
334
335 if (urb->status == 0) {
336 hdev->stat.byte_rx += urb->actual_length;
337
338 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
339 urb->transfer_buffer,
340 urb->actual_length) < 0) {
341 BT_ERR("%s corrupted ACL packet", hdev->name);
342 hdev->stat.err_rx++;
343 }
344 }
345
346 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
347 return;
348
349 usb_anchor_urb(urb, &data->bulk_anchor);
350 usb_mark_last_busy(data->udev);
351
352 err = usb_submit_urb(urb, GFP_ATOMIC);
353 if (err < 0) {
354 if (err != -EPERM)
355 BT_ERR("%s urb %p failed to resubmit (%d)",
356 hdev->name, urb, -err);
357 usb_unanchor_urb(urb);
358 }
359 }
360
361 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
362 {
363 struct btusb_data *data = hdev->driver_data;
364 struct urb *urb;
365 unsigned char *buf;
366 unsigned int pipe;
367 int err, size = HCI_MAX_FRAME_SIZE;
368
369 BT_DBG("%s", hdev->name);
370
371 if (!data->bulk_rx_ep)
372 return -ENODEV;
373
374 urb = usb_alloc_urb(0, mem_flags);
375 if (!urb)
376 return -ENOMEM;
377
378 buf = kmalloc(size, mem_flags);
379 if (!buf) {
380 usb_free_urb(urb);
381 return -ENOMEM;
382 }
383
384 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
385
386 usb_fill_bulk_urb(urb, data->udev, pipe,
387 buf, size, btusb_bulk_complete, hdev);
388
389 urb->transfer_flags |= URB_FREE_BUFFER;
390
391 usb_mark_last_busy(data->udev);
392 usb_anchor_urb(urb, &data->bulk_anchor);
393
394 err = usb_submit_urb(urb, mem_flags);
395 if (err < 0) {
396 BT_ERR("%s urb %p submission failed (%d)",
397 hdev->name, urb, -err);
398 usb_unanchor_urb(urb);
399 }
400
401 usb_free_urb(urb);
402
403 return err;
404 }
405
406 static void btusb_isoc_complete(struct urb *urb)
407 {
408 struct hci_dev *hdev = urb->context;
409 struct btusb_data *data = hdev->driver_data;
410 int i, err;
411
412 BT_DBG("%s urb %p status %d count %d", hdev->name,
413 urb, urb->status, urb->actual_length);
414
415 if (!test_bit(HCI_RUNNING, &hdev->flags))
416 return;
417
418 if (urb->status == 0) {
419 for (i = 0; i < urb->number_of_packets; i++) {
420 unsigned int offset = urb->iso_frame_desc[i].offset;
421 unsigned int length = urb->iso_frame_desc[i].actual_length;
422
423 if (urb->iso_frame_desc[i].status)
424 continue;
425
426 hdev->stat.byte_rx += length;
427
428 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
429 urb->transfer_buffer + offset,
430 length) < 0) {
431 BT_ERR("%s corrupted SCO packet", hdev->name);
432 hdev->stat.err_rx++;
433 }
434 }
435 }
436
437 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
438 return;
439
440 usb_anchor_urb(urb, &data->isoc_anchor);
441
442 err = usb_submit_urb(urb, GFP_ATOMIC);
443 if (err < 0) {
444 if (err != -EPERM)
445 BT_ERR("%s urb %p failed to resubmit (%d)",
446 hdev->name, urb, -err);
447 usb_unanchor_urb(urb);
448 }
449 }
450
451 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
452 {
453 int i, offset = 0;
454
455 BT_DBG("len %d mtu %d", len, mtu);
456
457 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
458 i++, offset += mtu, len -= mtu) {
459 urb->iso_frame_desc[i].offset = offset;
460 urb->iso_frame_desc[i].length = mtu;
461 }
462
463 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
464 urb->iso_frame_desc[i].offset = offset;
465 urb->iso_frame_desc[i].length = len;
466 i++;
467 }
468
469 urb->number_of_packets = i;
470 }
471
472 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
473 {
474 struct btusb_data *data = hdev->driver_data;
475 struct urb *urb;
476 unsigned char *buf;
477 unsigned int pipe;
478 int err, size;
479
480 BT_DBG("%s", hdev->name);
481
482 if (!data->isoc_rx_ep)
483 return -ENODEV;
484
485 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
486 if (!urb)
487 return -ENOMEM;
488
489 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
490 BTUSB_MAX_ISOC_FRAMES;
491
492 buf = kmalloc(size, mem_flags);
493 if (!buf) {
494 usb_free_urb(urb);
495 return -ENOMEM;
496 }
497
498 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
499
500 urb->dev = data->udev;
501 urb->pipe = pipe;
502 urb->context = hdev;
503 urb->complete = btusb_isoc_complete;
504 urb->interval = data->isoc_rx_ep->bInterval;
505
506 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
507 urb->transfer_buffer = buf;
508 urb->transfer_buffer_length = size;
509
510 __fill_isoc_descriptor(urb, size,
511 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
512
513 usb_anchor_urb(urb, &data->isoc_anchor);
514
515 err = usb_submit_urb(urb, mem_flags);
516 if (err < 0) {
517 BT_ERR("%s urb %p submission failed (%d)",
518 hdev->name, urb, -err);
519 usb_unanchor_urb(urb);
520 }
521
522 usb_free_urb(urb);
523
524 return err;
525 }
526
527 static void btusb_tx_complete(struct urb *urb)
528 {
529 struct sk_buff *skb = urb->context;
530 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
531 struct btusb_data *data = hdev->driver_data;
532
533 BT_DBG("%s urb %p status %d count %d", hdev->name,
534 urb, urb->status, urb->actual_length);
535
536 if (!test_bit(HCI_RUNNING, &hdev->flags))
537 goto done;
538
539 if (!urb->status)
540 hdev->stat.byte_tx += urb->transfer_buffer_length;
541 else
542 hdev->stat.err_tx++;
543
544 done:
545 spin_lock(&data->txlock);
546 data->tx_in_flight--;
547 spin_unlock(&data->txlock);
548
549 kfree(urb->setup_packet);
550
551 kfree_skb(skb);
552 }
553
554 static void btusb_isoc_tx_complete(struct urb *urb)
555 {
556 struct sk_buff *skb = urb->context;
557 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
558
559 BT_DBG("%s urb %p status %d count %d", hdev->name,
560 urb, urb->status, urb->actual_length);
561
562 if (!test_bit(HCI_RUNNING, &hdev->flags))
563 goto done;
564
565 if (!urb->status)
566 hdev->stat.byte_tx += urb->transfer_buffer_length;
567 else
568 hdev->stat.err_tx++;
569
570 done:
571 kfree(urb->setup_packet);
572
573 kfree_skb(skb);
574 }
575
576 static int btusb_open(struct hci_dev *hdev)
577 {
578 struct btusb_data *data = hdev->driver_data;
579 int err;
580
581 BT_DBG("%s", hdev->name);
582
583 err = usb_autopm_get_interface(data->intf);
584 if (err < 0)
585 return err;
586
587 data->intf->needs_remote_wakeup = 1;
588
589 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
590 goto done;
591
592 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
593 goto done;
594
595 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
596 if (err < 0)
597 goto failed;
598
599 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
600 if (err < 0) {
601 usb_kill_anchored_urbs(&data->intr_anchor);
602 goto failed;
603 }
604
605 set_bit(BTUSB_BULK_RUNNING, &data->flags);
606 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
607
608 done:
609 usb_autopm_put_interface(data->intf);
610 return 0;
611
612 failed:
613 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
614 clear_bit(HCI_RUNNING, &hdev->flags);
615 usb_autopm_put_interface(data->intf);
616 return err;
617 }
618
619 static void btusb_stop_traffic(struct btusb_data *data)
620 {
621 usb_kill_anchored_urbs(&data->intr_anchor);
622 usb_kill_anchored_urbs(&data->bulk_anchor);
623 usb_kill_anchored_urbs(&data->isoc_anchor);
624 }
625
626 static int btusb_close(struct hci_dev *hdev)
627 {
628 struct btusb_data *data = hdev->driver_data;
629 int err;
630
631 BT_DBG("%s", hdev->name);
632
633 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
634 return 0;
635
636 cancel_work_sync(&data->work);
637 cancel_work_sync(&data->waker);
638
639 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
640 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
641 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
642
643 btusb_stop_traffic(data);
644 err = usb_autopm_get_interface(data->intf);
645 if (err < 0)
646 goto failed;
647
648 data->intf->needs_remote_wakeup = 0;
649 usb_autopm_put_interface(data->intf);
650
651 failed:
652 usb_scuttle_anchored_urbs(&data->deferred);
653 return 0;
654 }
655
656 static int btusb_flush(struct hci_dev *hdev)
657 {
658 struct btusb_data *data = hdev->driver_data;
659
660 BT_DBG("%s", hdev->name);
661
662 usb_kill_anchored_urbs(&data->tx_anchor);
663
664 return 0;
665 }
666
667 static int btusb_send_frame(struct sk_buff *skb)
668 {
669 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
670 struct btusb_data *data = hdev->driver_data;
671 struct usb_ctrlrequest *dr;
672 struct urb *urb;
673 unsigned int pipe;
674 int err;
675
676 BT_DBG("%s", hdev->name);
677
678 if (!test_bit(HCI_RUNNING, &hdev->flags))
679 return -EBUSY;
680
681 switch (bt_cb(skb)->pkt_type) {
682 case HCI_COMMAND_PKT:
683 urb = usb_alloc_urb(0, GFP_ATOMIC);
684 if (!urb)
685 return -ENOMEM;
686
687 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
688 if (!dr) {
689 usb_free_urb(urb);
690 return -ENOMEM;
691 }
692
693 dr->bRequestType = data->cmdreq_type;
694 dr->bRequest = 0;
695 dr->wIndex = 0;
696 dr->wValue = 0;
697 dr->wLength = __cpu_to_le16(skb->len);
698
699 pipe = usb_sndctrlpipe(data->udev, 0x00);
700
701 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
702 skb->data, skb->len, btusb_tx_complete, skb);
703
704 hdev->stat.cmd_tx++;
705 break;
706
707 case HCI_ACLDATA_PKT:
708 if (!data->bulk_tx_ep || (hdev->conn_hash.acl_num < 1 &&
709 hdev->conn_hash.le_num < 1))
710 return -ENODEV;
711
712 urb = usb_alloc_urb(0, GFP_ATOMIC);
713 if (!urb)
714 return -ENOMEM;
715
716 pipe = usb_sndbulkpipe(data->udev,
717 data->bulk_tx_ep->bEndpointAddress);
718
719 usb_fill_bulk_urb(urb, data->udev, pipe,
720 skb->data, skb->len, btusb_tx_complete, skb);
721
722 hdev->stat.acl_tx++;
723 break;
724
725 case HCI_SCODATA_PKT:
726 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
727 return -ENODEV;
728
729 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
730 if (!urb)
731 return -ENOMEM;
732
733 pipe = usb_sndisocpipe(data->udev,
734 data->isoc_tx_ep->bEndpointAddress);
735
736 usb_fill_int_urb(urb, data->udev, pipe,
737 skb->data, skb->len, btusb_isoc_tx_complete,
738 skb, data->isoc_tx_ep->bInterval);
739
740 urb->transfer_flags = URB_ISO_ASAP;
741
742 __fill_isoc_descriptor(urb, skb->len,
743 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
744
745 hdev->stat.sco_tx++;
746 goto skip_waking;
747
748 default:
749 return -EILSEQ;
750 }
751
752 err = inc_tx(data);
753 if (err) {
754 usb_anchor_urb(urb, &data->deferred);
755 schedule_work(&data->waker);
756 err = 0;
757 goto done;
758 }
759
760 skip_waking:
761 usb_anchor_urb(urb, &data->tx_anchor);
762
763 err = usb_submit_urb(urb, GFP_ATOMIC);
764 if (err < 0) {
765 BT_ERR("%s urb %p submission failed", hdev->name, urb);
766 kfree(urb->setup_packet);
767 usb_unanchor_urb(urb);
768 } else {
769 usb_mark_last_busy(data->udev);
770 }
771
772 usb_free_urb(urb);
773
774 done:
775 return err;
776 }
777
778 static void btusb_destruct(struct hci_dev *hdev)
779 {
780 struct btusb_data *data = hdev->driver_data;
781
782 BT_DBG("%s", hdev->name);
783
784 kfree(data);
785 }
786
787 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
788 {
789 struct btusb_data *data = hdev->driver_data;
790
791 BT_DBG("%s evt %d", hdev->name, evt);
792
793 if (hdev->conn_hash.sco_num != data->sco_num) {
794 data->sco_num = hdev->conn_hash.sco_num;
795 schedule_work(&data->work);
796 }
797 }
798
799 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
800 {
801 struct btusb_data *data = hdev->driver_data;
802 struct usb_interface *intf = data->isoc;
803 struct usb_endpoint_descriptor *ep_desc;
804 int i, err;
805
806 if (!data->isoc)
807 return -ENODEV;
808
809 err = usb_set_interface(data->udev, 1, altsetting);
810 if (err < 0) {
811 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
812 return err;
813 }
814
815 data->isoc_altsetting = altsetting;
816
817 data->isoc_tx_ep = NULL;
818 data->isoc_rx_ep = NULL;
819
820 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
821 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
822
823 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
824 data->isoc_tx_ep = ep_desc;
825 continue;
826 }
827
828 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
829 data->isoc_rx_ep = ep_desc;
830 continue;
831 }
832 }
833
834 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
835 BT_ERR("%s invalid SCO descriptors", hdev->name);
836 return -ENODEV;
837 }
838
839 return 0;
840 }
841
842 static void btusb_work(struct work_struct *work)
843 {
844 struct btusb_data *data = container_of(work, struct btusb_data, work);
845 struct hci_dev *hdev = data->hdev;
846 int err;
847
848 if (hdev->conn_hash.sco_num > 0) {
849 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
850 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
851 if (err < 0) {
852 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
853 usb_kill_anchored_urbs(&data->isoc_anchor);
854 return;
855 }
856
857 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
858 }
859 if (data->isoc_altsetting != 2) {
860 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
861 usb_kill_anchored_urbs(&data->isoc_anchor);
862
863 if (__set_isoc_interface(hdev, 2) < 0)
864 return;
865 }
866
867 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
868 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
869 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
870 else
871 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
872 }
873 } else {
874 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
875 usb_kill_anchored_urbs(&data->isoc_anchor);
876
877 __set_isoc_interface(hdev, 0);
878 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
879 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
880 }
881 }
882
883 static void btusb_waker(struct work_struct *work)
884 {
885 struct btusb_data *data = container_of(work, struct btusb_data, waker);
886 int err;
887
888 err = usb_autopm_get_interface(data->intf);
889 if (err < 0)
890 return;
891
892 usb_autopm_put_interface(data->intf);
893 }
894
895 static int btusb_probe(struct usb_interface *intf,
896 const struct usb_device_id *id)
897 {
898 struct usb_endpoint_descriptor *ep_desc;
899 struct btusb_data *data;
900 struct hci_dev *hdev;
901 int i, err;
902
903 BT_DBG("intf %p id %p", intf, id);
904
905 /* interface numbers are hardcoded in the spec */
906 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
907 return -ENODEV;
908
909 if (!id->driver_info) {
910 const struct usb_device_id *match;
911 match = usb_match_id(intf, blacklist_table);
912 if (match)
913 id = match;
914 }
915
916 if (id->driver_info == BTUSB_IGNORE)
917 return -ENODEV;
918
919 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
920 return -ENODEV;
921
922 if (ignore_csr && id->driver_info & BTUSB_CSR)
923 return -ENODEV;
924
925 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
926 return -ENODEV;
927
928 if (id->driver_info & BTUSB_ATH3012) {
929 struct usb_device *udev = interface_to_usbdev(intf);
930
931 /* Old firmware would otherwise let ath3k driver load
932 * patch and sysconfig files */
933 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
934 return -ENODEV;
935 }
936
937 data = kzalloc(sizeof(*data), GFP_KERNEL);
938 if (!data)
939 return -ENOMEM;
940
941 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
942 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
943
944 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
945 data->intr_ep = ep_desc;
946 continue;
947 }
948
949 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
950 data->bulk_tx_ep = ep_desc;
951 continue;
952 }
953
954 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
955 data->bulk_rx_ep = ep_desc;
956 continue;
957 }
958 }
959
960 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
961 kfree(data);
962 return -ENODEV;
963 }
964
965 data->cmdreq_type = USB_TYPE_CLASS;
966
967 data->udev = interface_to_usbdev(intf);
968 data->intf = intf;
969
970 spin_lock_init(&data->lock);
971
972 INIT_WORK(&data->work, btusb_work);
973 INIT_WORK(&data->waker, btusb_waker);
974 spin_lock_init(&data->txlock);
975
976 init_usb_anchor(&data->tx_anchor);
977 init_usb_anchor(&data->intr_anchor);
978 init_usb_anchor(&data->bulk_anchor);
979 init_usb_anchor(&data->isoc_anchor);
980 init_usb_anchor(&data->deferred);
981
982 hdev = hci_alloc_dev();
983 if (!hdev) {
984 kfree(data);
985 return -ENOMEM;
986 }
987
988 hdev->bus = HCI_USB;
989 hdev->driver_data = data;
990
991 data->hdev = hdev;
992
993 SET_HCIDEV_DEV(hdev, &intf->dev);
994
995 hdev->open = btusb_open;
996 hdev->close = btusb_close;
997 hdev->flush = btusb_flush;
998 hdev->send = btusb_send_frame;
999 hdev->destruct = btusb_destruct;
1000 hdev->notify = btusb_notify;
1001
1002 hdev->owner = THIS_MODULE;
1003
1004 /* Interface numbers are hardcoded in the specification */
1005 data->isoc = usb_ifnum_to_if(data->udev, 1);
1006
1007 if (!reset)
1008 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1009
1010 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1011 if (!disable_scofix)
1012 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1013 }
1014
1015 if (id->driver_info & BTUSB_BROKEN_ISOC)
1016 data->isoc = NULL;
1017
1018 if (id->driver_info & BTUSB_DIGIANSWER) {
1019 data->cmdreq_type = USB_TYPE_VENDOR;
1020 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1021 }
1022
1023 if (id->driver_info & BTUSB_CSR) {
1024 struct usb_device *udev = data->udev;
1025
1026 /* Old firmware would otherwise execute USB reset */
1027 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1028 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1029 }
1030
1031 if (id->driver_info & BTUSB_SNIFFER) {
1032 struct usb_device *udev = data->udev;
1033
1034 /* New sniffer firmware has crippled HCI interface */
1035 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1036 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1037
1038 data->isoc = NULL;
1039 }
1040
1041 if (id->driver_info & BTUSB_BCM92035) {
1042 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1043 struct sk_buff *skb;
1044
1045 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1046 if (skb) {
1047 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1048 skb_queue_tail(&hdev->driver_init, skb);
1049 }
1050 }
1051
1052 if (data->isoc) {
1053 err = usb_driver_claim_interface(&btusb_driver,
1054 data->isoc, data);
1055 if (err < 0) {
1056 hci_free_dev(hdev);
1057 kfree(data);
1058 return err;
1059 }
1060 }
1061
1062 err = hci_register_dev(hdev);
1063 if (err < 0) {
1064 hci_free_dev(hdev);
1065 kfree(data);
1066 return err;
1067 }
1068
1069 usb_set_intfdata(intf, data);
1070
1071 return 0;
1072 }
1073
1074 static void btusb_disconnect(struct usb_interface *intf)
1075 {
1076 struct btusb_data *data = usb_get_intfdata(intf);
1077 struct hci_dev *hdev;
1078
1079 BT_DBG("intf %p", intf);
1080
1081 if (!data)
1082 return;
1083
1084 hdev = data->hdev;
1085
1086 __hci_dev_hold(hdev);
1087
1088 usb_set_intfdata(data->intf, NULL);
1089
1090 if (data->isoc)
1091 usb_set_intfdata(data->isoc, NULL);
1092
1093 hci_unregister_dev(hdev);
1094
1095 if (intf == data->isoc)
1096 usb_driver_release_interface(&btusb_driver, data->intf);
1097 else if (data->isoc)
1098 usb_driver_release_interface(&btusb_driver, data->isoc);
1099
1100 __hci_dev_put(hdev);
1101
1102 hci_free_dev(hdev);
1103 }
1104
1105 #ifdef CONFIG_PM
1106 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1107 {
1108 struct btusb_data *data = usb_get_intfdata(intf);
1109
1110 BT_DBG("intf %p", intf);
1111
1112 if (data->suspend_count++)
1113 return 0;
1114
1115 spin_lock_irq(&data->txlock);
1116 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1117 set_bit(BTUSB_SUSPENDING, &data->flags);
1118 spin_unlock_irq(&data->txlock);
1119 } else {
1120 spin_unlock_irq(&data->txlock);
1121 data->suspend_count--;
1122 return -EBUSY;
1123 }
1124
1125 cancel_work_sync(&data->work);
1126
1127 btusb_stop_traffic(data);
1128 usb_kill_anchored_urbs(&data->tx_anchor);
1129
1130 return 0;
1131 }
1132
1133 static void play_deferred(struct btusb_data *data)
1134 {
1135 struct urb *urb;
1136 int err;
1137
1138 while ((urb = usb_get_from_anchor(&data->deferred))) {
1139 err = usb_submit_urb(urb, GFP_ATOMIC);
1140 if (err < 0)
1141 break;
1142
1143 data->tx_in_flight++;
1144 }
1145 usb_scuttle_anchored_urbs(&data->deferred);
1146 }
1147
1148 static int btusb_resume(struct usb_interface *intf)
1149 {
1150 struct btusb_data *data = usb_get_intfdata(intf);
1151 struct hci_dev *hdev = data->hdev;
1152 int err = 0;
1153
1154 BT_DBG("intf %p", intf);
1155
1156 if (--data->suspend_count)
1157 return 0;
1158
1159 if (!test_bit(HCI_RUNNING, &hdev->flags))
1160 goto done;
1161
1162 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1163 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1164 if (err < 0) {
1165 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1166 goto failed;
1167 }
1168 }
1169
1170 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1171 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1172 if (err < 0) {
1173 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1174 goto failed;
1175 }
1176
1177 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1178 }
1179
1180 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1181 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1182 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1183 else
1184 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1185 }
1186
1187 spin_lock_irq(&data->txlock);
1188 play_deferred(data);
1189 clear_bit(BTUSB_SUSPENDING, &data->flags);
1190 spin_unlock_irq(&data->txlock);
1191 schedule_work(&data->work);
1192
1193 return 0;
1194
1195 failed:
1196 usb_scuttle_anchored_urbs(&data->deferred);
1197 done:
1198 spin_lock_irq(&data->txlock);
1199 clear_bit(BTUSB_SUSPENDING, &data->flags);
1200 spin_unlock_irq(&data->txlock);
1201
1202 return err;
1203 }
1204 #endif
1205
1206 static struct usb_driver btusb_driver = {
1207 .name = "btusb",
1208 .probe = btusb_probe,
1209 .disconnect = btusb_disconnect,
1210 #ifdef CONFIG_PM
1211 .suspend = btusb_suspend,
1212 .resume = btusb_resume,
1213 #endif
1214 .id_table = btusb_table,
1215 .supports_autosuspend = 1,
1216 };
1217
1218 static int __init btusb_init(void)
1219 {
1220 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1221
1222 return usb_register(&btusb_driver);
1223 }
1224
1225 static void __exit btusb_exit(void)
1226 {
1227 usb_deregister(&btusb_driver);
1228 }
1229
1230 module_init(btusb_init);
1231 module_exit(btusb_exit);
1232
1233 module_param(ignore_dga, bool, 0644);
1234 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1235
1236 module_param(ignore_csr, bool, 0644);
1237 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1238
1239 module_param(ignore_sniffer, bool, 0644);
1240 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1241
1242 module_param(disable_scofix, bool, 0644);
1243 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1244
1245 module_param(force_scofix, bool, 0644);
1246 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1247
1248 module_param(reset, bool, 0644);
1249 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1250
1251 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1252 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1253 MODULE_VERSION(VERSION);
1254 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree