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drivers/staging/usbip/userspace/libsrc/vhci_driver.c: test the just-initialized value
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / bluetooth / btusb.c
blob91d13a9e8c657f9b838c56ecbae6608965342bc0
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 /* Apple MacBookPro 7,1 */
64 { USB_DEVICE(0x05ac, 0x8213) },
65
66 /* Apple iMac11,1 */
67 { USB_DEVICE(0x05ac, 0x8215) },
68
69 /* Apple MacBookPro6,2 */
70 { USB_DEVICE(0x05ac, 0x8218) },
71
72 /* Apple MacBookAir3,1, MacBookAir3,2 */
73 { USB_DEVICE(0x05ac, 0x821b) },
74
75 /* Apple MacBookPro8,2 */
76 { USB_DEVICE(0x05ac, 0x821a) },
77
78 /* AVM BlueFRITZ! USB v2.0 */
79 { USB_DEVICE(0x057c, 0x3800) },
80
81 /* Bluetooth Ultraport Module from IBM */
82 { USB_DEVICE(0x04bf, 0x030a) },
83
84 /* ALPS Modules with non-standard id */
85 { USB_DEVICE(0x044e, 0x3001) },
86 { USB_DEVICE(0x044e, 0x3002) },
87
88 /* Ericsson with non-standard id */
89 { USB_DEVICE(0x0bdb, 0x1002) },
90
91 /* Canyon CN-BTU1 with HID interfaces */
92 { USB_DEVICE(0x0c10, 0x0000) },
93
94 { } /* Terminating entry */
95 };
96
97 MODULE_DEVICE_TABLE(usb, btusb_table);
98
99 static struct usb_device_id blacklist_table[] = {
100 /* CSR BlueCore devices */
101 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
102
103 /* Broadcom BCM2033 without firmware */
104 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
105
106 /* Atheros 3011 with sflash firmware */
107 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
108 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
109
110 /* Atheros AR9285 Malbec with sflash firmware */
111 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
112
113 /* Atheros 3012 with sflash firmware */
114 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
115
116 /* Atheros AR5BBU12 with sflash firmware */
117 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
118
119 /* Broadcom BCM2035 */
120 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
121 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
122 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
123
124 /* Broadcom BCM2045 */
125 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
126 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
127
128 /* IBM/Lenovo ThinkPad with Broadcom chip */
129 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
130 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
131
132 /* HP laptop with Broadcom chip */
133 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
134
135 /* Dell laptop with Broadcom chip */
136 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
137
138 /* Dell Wireless 370 and 410 devices */
139 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
140 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
141
142 /* Belkin F8T012 and F8T013 devices */
143 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
144 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
145
146 /* Asus WL-BTD202 device */
147 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
148
149 /* Kensington Bluetooth USB adapter */
150 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
151
152 /* RTX Telecom based adapters with buggy SCO support */
153 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
154 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
155
156 /* CONWISE Technology based adapters with buggy SCO support */
157 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
158
159 /* Digianswer devices */
160 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
161 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
162
163 /* CSR BlueCore Bluetooth Sniffer */
164 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
165
166 /* Frontline ComProbe Bluetooth Sniffer */
167 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
168
169 { } /* Terminating entry */
170 };
171
172 #define BTUSB_MAX_ISOC_FRAMES 10
173
174 #define BTUSB_INTR_RUNNING 0
175 #define BTUSB_BULK_RUNNING 1
176 #define BTUSB_ISOC_RUNNING 2
177 #define BTUSB_SUSPENDING 3
178 #define BTUSB_DID_ISO_RESUME 4
179
180 struct btusb_data {
181 struct hci_dev *hdev;
182 struct usb_device *udev;
183 struct usb_interface *intf;
184 struct usb_interface *isoc;
185
186 spinlock_t lock;
187
188 unsigned long flags;
189
190 struct work_struct work;
191 struct work_struct waker;
192
193 struct usb_anchor tx_anchor;
194 struct usb_anchor intr_anchor;
195 struct usb_anchor bulk_anchor;
196 struct usb_anchor isoc_anchor;
197 struct usb_anchor deferred;
198 int tx_in_flight;
199 spinlock_t txlock;
200
201 struct usb_endpoint_descriptor *intr_ep;
202 struct usb_endpoint_descriptor *bulk_tx_ep;
203 struct usb_endpoint_descriptor *bulk_rx_ep;
204 struct usb_endpoint_descriptor *isoc_tx_ep;
205 struct usb_endpoint_descriptor *isoc_rx_ep;
206
207 __u8 cmdreq_type;
208
209 unsigned int sco_num;
210 int isoc_altsetting;
211 int suspend_count;
212 };
213
214 static int inc_tx(struct btusb_data *data)
215 {
216 unsigned long flags;
217 int rv;
218
219 spin_lock_irqsave(&data->txlock, flags);
220 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
221 if (!rv)
222 data->tx_in_flight++;
223 spin_unlock_irqrestore(&data->txlock, flags);
224
225 return rv;
226 }
227
228 static void btusb_intr_complete(struct urb *urb)
229 {
230 struct hci_dev *hdev = urb->context;
231 struct btusb_data *data = hdev->driver_data;
232 int err;
233
234 BT_DBG("%s urb %p status %d count %d", hdev->name,
235 urb, urb->status, urb->actual_length);
236
237 if (!test_bit(HCI_RUNNING, &hdev->flags))
238 return;
239
240 if (urb->status == 0) {
241 hdev->stat.byte_rx += urb->actual_length;
242
243 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
244 urb->transfer_buffer,
245 urb->actual_length) < 0) {
246 BT_ERR("%s corrupted event packet", hdev->name);
247 hdev->stat.err_rx++;
248 }
249 }
250
251 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
252 return;
253
254 usb_mark_last_busy(data->udev);
255 usb_anchor_urb(urb, &data->intr_anchor);
256
257 err = usb_submit_urb(urb, GFP_ATOMIC);
258 if (err < 0) {
259 if (err != -EPERM)
260 BT_ERR("%s urb %p failed to resubmit (%d)",
261 hdev->name, urb, -err);
262 usb_unanchor_urb(urb);
263 }
264 }
265
266 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
267 {
268 struct btusb_data *data = hdev->driver_data;
269 struct urb *urb;
270 unsigned char *buf;
271 unsigned int pipe;
272 int err, size;
273
274 BT_DBG("%s", hdev->name);
275
276 if (!data->intr_ep)
277 return -ENODEV;
278
279 urb = usb_alloc_urb(0, mem_flags);
280 if (!urb)
281 return -ENOMEM;
282
283 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
284
285 buf = kmalloc(size, mem_flags);
286 if (!buf) {
287 usb_free_urb(urb);
288 return -ENOMEM;
289 }
290
291 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
292
293 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
294 btusb_intr_complete, hdev,
295 data->intr_ep->bInterval);
296
297 urb->transfer_flags |= URB_FREE_BUFFER;
298
299 usb_anchor_urb(urb, &data->intr_anchor);
300
301 err = usb_submit_urb(urb, mem_flags);
302 if (err < 0) {
303 BT_ERR("%s urb %p submission failed (%d)",
304 hdev->name, urb, -err);
305 usb_unanchor_urb(urb);
306 }
307
308 usb_free_urb(urb);
309
310 return err;
311 }
312
313 static void btusb_bulk_complete(struct urb *urb)
314 {
315 struct hci_dev *hdev = urb->context;
316 struct btusb_data *data = hdev->driver_data;
317 int err;
318
319 BT_DBG("%s urb %p status %d count %d", hdev->name,
320 urb, urb->status, urb->actual_length);
321
322 if (!test_bit(HCI_RUNNING, &hdev->flags))
323 return;
324
325 if (urb->status == 0) {
326 hdev->stat.byte_rx += urb->actual_length;
327
328 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
329 urb->transfer_buffer,
330 urb->actual_length) < 0) {
331 BT_ERR("%s corrupted ACL packet", hdev->name);
332 hdev->stat.err_rx++;
333 }
334 }
335
336 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
337 return;
338
339 usb_anchor_urb(urb, &data->bulk_anchor);
340 usb_mark_last_busy(data->udev);
341
342 err = usb_submit_urb(urb, GFP_ATOMIC);
343 if (err < 0) {
344 if (err != -EPERM)
345 BT_ERR("%s urb %p failed to resubmit (%d)",
346 hdev->name, urb, -err);
347 usb_unanchor_urb(urb);
348 }
349 }
350
351 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
352 {
353 struct btusb_data *data = hdev->driver_data;
354 struct urb *urb;
355 unsigned char *buf;
356 unsigned int pipe;
357 int err, size = HCI_MAX_FRAME_SIZE;
358
359 BT_DBG("%s", hdev->name);
360
361 if (!data->bulk_rx_ep)
362 return -ENODEV;
363
364 urb = usb_alloc_urb(0, mem_flags);
365 if (!urb)
366 return -ENOMEM;
367
368 buf = kmalloc(size, mem_flags);
369 if (!buf) {
370 usb_free_urb(urb);
371 return -ENOMEM;
372 }
373
374 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
375
376 usb_fill_bulk_urb(urb, data->udev, pipe,
377 buf, size, btusb_bulk_complete, hdev);
378
379 urb->transfer_flags |= URB_FREE_BUFFER;
380
381 usb_mark_last_busy(data->udev);
382 usb_anchor_urb(urb, &data->bulk_anchor);
383
384 err = usb_submit_urb(urb, mem_flags);
385 if (err < 0) {
386 BT_ERR("%s urb %p submission failed (%d)",
387 hdev->name, urb, -err);
388 usb_unanchor_urb(urb);
389 }
390
391 usb_free_urb(urb);
392
393 return err;
394 }
395
396 static void btusb_isoc_complete(struct urb *urb)
397 {
398 struct hci_dev *hdev = urb->context;
399 struct btusb_data *data = hdev->driver_data;
400 int i, err;
401
402 BT_DBG("%s urb %p status %d count %d", hdev->name,
403 urb, urb->status, urb->actual_length);
404
405 if (!test_bit(HCI_RUNNING, &hdev->flags))
406 return;
407
408 if (urb->status == 0) {
409 for (i = 0; i < urb->number_of_packets; i++) {
410 unsigned int offset = urb->iso_frame_desc[i].offset;
411 unsigned int length = urb->iso_frame_desc[i].actual_length;
412
413 if (urb->iso_frame_desc[i].status)
414 continue;
415
416 hdev->stat.byte_rx += length;
417
418 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
419 urb->transfer_buffer + offset,
420 length) < 0) {
421 BT_ERR("%s corrupted SCO packet", hdev->name);
422 hdev->stat.err_rx++;
423 }
424 }
425 }
426
427 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
428 return;
429
430 usb_anchor_urb(urb, &data->isoc_anchor);
431
432 err = usb_submit_urb(urb, GFP_ATOMIC);
433 if (err < 0) {
434 if (err != -EPERM)
435 BT_ERR("%s urb %p failed to resubmit (%d)",
436 hdev->name, urb, -err);
437 usb_unanchor_urb(urb);
438 }
439 }
440
441 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
442 {
443 int i, offset = 0;
444
445 BT_DBG("len %d mtu %d", len, mtu);
446
447 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
448 i++, offset += mtu, len -= mtu) {
449 urb->iso_frame_desc[i].offset = offset;
450 urb->iso_frame_desc[i].length = mtu;
451 }
452
453 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
454 urb->iso_frame_desc[i].offset = offset;
455 urb->iso_frame_desc[i].length = len;
456 i++;
457 }
458
459 urb->number_of_packets = i;
460 }
461
462 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
463 {
464 struct btusb_data *data = hdev->driver_data;
465 struct urb *urb;
466 unsigned char *buf;
467 unsigned int pipe;
468 int err, size;
469
470 BT_DBG("%s", hdev->name);
471
472 if (!data->isoc_rx_ep)
473 return -ENODEV;
474
475 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
476 if (!urb)
477 return -ENOMEM;
478
479 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
480 BTUSB_MAX_ISOC_FRAMES;
481
482 buf = kmalloc(size, mem_flags);
483 if (!buf) {
484 usb_free_urb(urb);
485 return -ENOMEM;
486 }
487
488 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
489
490 urb->dev = data->udev;
491 urb->pipe = pipe;
492 urb->context = hdev;
493 urb->complete = btusb_isoc_complete;
494 urb->interval = data->isoc_rx_ep->bInterval;
495
496 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
497 urb->transfer_buffer = buf;
498 urb->transfer_buffer_length = size;
499
500 __fill_isoc_descriptor(urb, size,
501 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
502
503 usb_anchor_urb(urb, &data->isoc_anchor);
504
505 err = usb_submit_urb(urb, mem_flags);
506 if (err < 0) {
507 BT_ERR("%s urb %p submission failed (%d)",
508 hdev->name, urb, -err);
509 usb_unanchor_urb(urb);
510 }
511
512 usb_free_urb(urb);
513
514 return err;
515 }
516
517 static void btusb_tx_complete(struct urb *urb)
518 {
519 struct sk_buff *skb = urb->context;
520 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
521 struct btusb_data *data = hdev->driver_data;
522
523 BT_DBG("%s urb %p status %d count %d", hdev->name,
524 urb, urb->status, urb->actual_length);
525
526 if (!test_bit(HCI_RUNNING, &hdev->flags))
527 goto done;
528
529 if (!urb->status)
530 hdev->stat.byte_tx += urb->transfer_buffer_length;
531 else
532 hdev->stat.err_tx++;
533
534 done:
535 spin_lock(&data->txlock);
536 data->tx_in_flight--;
537 spin_unlock(&data->txlock);
538
539 kfree(urb->setup_packet);
540
541 kfree_skb(skb);
542 }
543
544 static void btusb_isoc_tx_complete(struct urb *urb)
545 {
546 struct sk_buff *skb = urb->context;
547 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
548
549 BT_DBG("%s urb %p status %d count %d", hdev->name,
550 urb, urb->status, urb->actual_length);
551
552 if (!test_bit(HCI_RUNNING, &hdev->flags))
553 goto done;
554
555 if (!urb->status)
556 hdev->stat.byte_tx += urb->transfer_buffer_length;
557 else
558 hdev->stat.err_tx++;
559
560 done:
561 kfree(urb->setup_packet);
562
563 kfree_skb(skb);
564 }
565
566 static int btusb_open(struct hci_dev *hdev)
567 {
568 struct btusb_data *data = hdev->driver_data;
569 int err;
570
571 BT_DBG("%s", hdev->name);
572
573 err = usb_autopm_get_interface(data->intf);
574 if (err < 0)
575 return err;
576
577 data->intf->needs_remote_wakeup = 1;
578
579 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
580 goto done;
581
582 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
583 goto done;
584
585 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
586 if (err < 0)
587 goto failed;
588
589 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
590 if (err < 0) {
591 usb_kill_anchored_urbs(&data->intr_anchor);
592 goto failed;
593 }
594
595 set_bit(BTUSB_BULK_RUNNING, &data->flags);
596 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
597
598 done:
599 usb_autopm_put_interface(data->intf);
600 return 0;
601
602 failed:
603 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
604 clear_bit(HCI_RUNNING, &hdev->flags);
605 usb_autopm_put_interface(data->intf);
606 return err;
607 }
608
609 static void btusb_stop_traffic(struct btusb_data *data)
610 {
611 usb_kill_anchored_urbs(&data->intr_anchor);
612 usb_kill_anchored_urbs(&data->bulk_anchor);
613 usb_kill_anchored_urbs(&data->isoc_anchor);
614 }
615
616 static int btusb_close(struct hci_dev *hdev)
617 {
618 struct btusb_data *data = hdev->driver_data;
619 int err;
620
621 BT_DBG("%s", hdev->name);
622
623 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
624 return 0;
625
626 cancel_work_sync(&data->work);
627 cancel_work_sync(&data->waker);
628
629 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
630 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
631 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
632
633 btusb_stop_traffic(data);
634 err = usb_autopm_get_interface(data->intf);
635 if (err < 0)
636 goto failed;
637
638 data->intf->needs_remote_wakeup = 0;
639 usb_autopm_put_interface(data->intf);
640
641 failed:
642 usb_scuttle_anchored_urbs(&data->deferred);
643 return 0;
644 }
645
646 static int btusb_flush(struct hci_dev *hdev)
647 {
648 struct btusb_data *data = hdev->driver_data;
649
650 BT_DBG("%s", hdev->name);
651
652 usb_kill_anchored_urbs(&data->tx_anchor);
653
654 return 0;
655 }
656
657 static int btusb_send_frame(struct sk_buff *skb)
658 {
659 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
660 struct btusb_data *data = hdev->driver_data;
661 struct usb_ctrlrequest *dr;
662 struct urb *urb;
663 unsigned int pipe;
664 int err;
665
666 BT_DBG("%s", hdev->name);
667
668 if (!test_bit(HCI_RUNNING, &hdev->flags))
669 return -EBUSY;
670
671 switch (bt_cb(skb)->pkt_type) {
672 case HCI_COMMAND_PKT:
673 urb = usb_alloc_urb(0, GFP_ATOMIC);
674 if (!urb)
675 return -ENOMEM;
676
677 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
678 if (!dr) {
679 usb_free_urb(urb);
680 return -ENOMEM;
681 }
682
683 dr->bRequestType = data->cmdreq_type;
684 dr->bRequest = 0;
685 dr->wIndex = 0;
686 dr->wValue = 0;
687 dr->wLength = __cpu_to_le16(skb->len);
688
689 pipe = usb_sndctrlpipe(data->udev, 0x00);
690
691 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
692 skb->data, skb->len, btusb_tx_complete, skb);
693
694 hdev->stat.cmd_tx++;
695 break;
696
697 case HCI_ACLDATA_PKT:
698 if (!data->bulk_tx_ep || (hdev->conn_hash.acl_num < 1 &&
699 hdev->conn_hash.le_num < 1))
700 return -ENODEV;
701
702 urb = usb_alloc_urb(0, GFP_ATOMIC);
703 if (!urb)
704 return -ENOMEM;
705
706 pipe = usb_sndbulkpipe(data->udev,
707 data->bulk_tx_ep->bEndpointAddress);
708
709 usb_fill_bulk_urb(urb, data->udev, pipe,
710 skb->data, skb->len, btusb_tx_complete, skb);
711
712 hdev->stat.acl_tx++;
713 break;
714
715 case HCI_SCODATA_PKT:
716 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
717 return -ENODEV;
718
719 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
720 if (!urb)
721 return -ENOMEM;
722
723 pipe = usb_sndisocpipe(data->udev,
724 data->isoc_tx_ep->bEndpointAddress);
725
726 usb_fill_int_urb(urb, data->udev, pipe,
727 skb->data, skb->len, btusb_isoc_tx_complete,
728 skb, data->isoc_tx_ep->bInterval);
729
730 urb->transfer_flags = URB_ISO_ASAP;
731
732 __fill_isoc_descriptor(urb, skb->len,
733 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
734
735 hdev->stat.sco_tx++;
736 goto skip_waking;
737
738 default:
739 return -EILSEQ;
740 }
741
742 err = inc_tx(data);
743 if (err) {
744 usb_anchor_urb(urb, &data->deferred);
745 schedule_work(&data->waker);
746 err = 0;
747 goto done;
748 }
749
750 skip_waking:
751 usb_anchor_urb(urb, &data->tx_anchor);
752
753 err = usb_submit_urb(urb, GFP_ATOMIC);
754 if (err < 0) {
755 BT_ERR("%s urb %p submission failed", hdev->name, urb);
756 kfree(urb->setup_packet);
757 usb_unanchor_urb(urb);
758 } else {
759 usb_mark_last_busy(data->udev);
760 }
761
762 usb_free_urb(urb);
763
764 done:
765 return err;
766 }
767
768 static void btusb_destruct(struct hci_dev *hdev)
769 {
770 struct btusb_data *data = hdev->driver_data;
771
772 BT_DBG("%s", hdev->name);
773
774 kfree(data);
775 }
776
777 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
778 {
779 struct btusb_data *data = hdev->driver_data;
780
781 BT_DBG("%s evt %d", hdev->name, evt);
782
783 if (hdev->conn_hash.sco_num != data->sco_num) {
784 data->sco_num = hdev->conn_hash.sco_num;
785 schedule_work(&data->work);
786 }
787 }
788
789 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
790 {
791 struct btusb_data *data = hdev->driver_data;
792 struct usb_interface *intf = data->isoc;
793 struct usb_endpoint_descriptor *ep_desc;
794 int i, err;
795
796 if (!data->isoc)
797 return -ENODEV;
798
799 err = usb_set_interface(data->udev, 1, altsetting);
800 if (err < 0) {
801 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
802 return err;
803 }
804
805 data->isoc_altsetting = altsetting;
806
807 data->isoc_tx_ep = NULL;
808 data->isoc_rx_ep = NULL;
809
810 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
811 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
812
813 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
814 data->isoc_tx_ep = ep_desc;
815 continue;
816 }
817
818 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
819 data->isoc_rx_ep = ep_desc;
820 continue;
821 }
822 }
823
824 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
825 BT_ERR("%s invalid SCO descriptors", hdev->name);
826 return -ENODEV;
827 }
828
829 return 0;
830 }
831
832 static void btusb_work(struct work_struct *work)
833 {
834 struct btusb_data *data = container_of(work, struct btusb_data, work);
835 struct hci_dev *hdev = data->hdev;
836 int err;
837
838 if (hdev->conn_hash.sco_num > 0) {
839 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
840 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
841 if (err < 0) {
842 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
843 usb_kill_anchored_urbs(&data->isoc_anchor);
844 return;
845 }
846
847 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
848 }
849 if (data->isoc_altsetting != 2) {
850 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
851 usb_kill_anchored_urbs(&data->isoc_anchor);
852
853 if (__set_isoc_interface(hdev, 2) < 0)
854 return;
855 }
856
857 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
858 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
859 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
860 else
861 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
862 }
863 } else {
864 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
865 usb_kill_anchored_urbs(&data->isoc_anchor);
866
867 __set_isoc_interface(hdev, 0);
868 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
869 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
870 }
871 }
872
873 static void btusb_waker(struct work_struct *work)
874 {
875 struct btusb_data *data = container_of(work, struct btusb_data, waker);
876 int err;
877
878 err = usb_autopm_get_interface(data->intf);
879 if (err < 0)
880 return;
881
882 usb_autopm_put_interface(data->intf);
883 }
884
885 static int btusb_probe(struct usb_interface *intf,
886 const struct usb_device_id *id)
887 {
888 struct usb_endpoint_descriptor *ep_desc;
889 struct btusb_data *data;
890 struct hci_dev *hdev;
891 int i, err;
892
893 BT_DBG("intf %p id %p", intf, id);
894
895 /* interface numbers are hardcoded in the spec */
896 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
897 return -ENODEV;
898
899 if (!id->driver_info) {
900 const struct usb_device_id *match;
901 match = usb_match_id(intf, blacklist_table);
902 if (match)
903 id = match;
904 }
905
906 if (id->driver_info == BTUSB_IGNORE)
907 return -ENODEV;
908
909 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
910 return -ENODEV;
911
912 if (ignore_csr && id->driver_info & BTUSB_CSR)
913 return -ENODEV;
914
915 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
916 return -ENODEV;
917
918 if (id->driver_info & BTUSB_ATH3012) {
919 struct usb_device *udev = interface_to_usbdev(intf);
920
921 /* Old firmware would otherwise let ath3k driver load
922 * patch and sysconfig files */
923 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
924 return -ENODEV;
925 }
926
927 data = kzalloc(sizeof(*data), GFP_KERNEL);
928 if (!data)
929 return -ENOMEM;
930
931 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
932 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
933
934 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
935 data->intr_ep = ep_desc;
936 continue;
937 }
938
939 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
940 data->bulk_tx_ep = ep_desc;
941 continue;
942 }
943
944 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
945 data->bulk_rx_ep = ep_desc;
946 continue;
947 }
948 }
949
950 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
951 kfree(data);
952 return -ENODEV;
953 }
954
955 data->cmdreq_type = USB_TYPE_CLASS;
956
957 data->udev = interface_to_usbdev(intf);
958 data->intf = intf;
959
960 spin_lock_init(&data->lock);
961
962 INIT_WORK(&data->work, btusb_work);
963 INIT_WORK(&data->waker, btusb_waker);
964 spin_lock_init(&data->txlock);
965
966 init_usb_anchor(&data->tx_anchor);
967 init_usb_anchor(&data->intr_anchor);
968 init_usb_anchor(&data->bulk_anchor);
969 init_usb_anchor(&data->isoc_anchor);
970 init_usb_anchor(&data->deferred);
971
972 hdev = hci_alloc_dev();
973 if (!hdev) {
974 kfree(data);
975 return -ENOMEM;
976 }
977
978 hdev->bus = HCI_USB;
979 hdev->driver_data = data;
980
981 data->hdev = hdev;
982
983 SET_HCIDEV_DEV(hdev, &intf->dev);
984
985 hdev->open = btusb_open;
986 hdev->close = btusb_close;
987 hdev->flush = btusb_flush;
988 hdev->send = btusb_send_frame;
989 hdev->destruct = btusb_destruct;
990 hdev->notify = btusb_notify;
991
992 hdev->owner = THIS_MODULE;
993
994 /* Interface numbers are hardcoded in the specification */
995 data->isoc = usb_ifnum_to_if(data->udev, 1);
996
997 if (!reset)
998 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
999
1000 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1001 if (!disable_scofix)
1002 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1003 }
1004
1005 if (id->driver_info & BTUSB_BROKEN_ISOC)
1006 data->isoc = NULL;
1007
1008 if (id->driver_info & BTUSB_DIGIANSWER) {
1009 data->cmdreq_type = USB_TYPE_VENDOR;
1010 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1011 }
1012
1013 if (id->driver_info & BTUSB_CSR) {
1014 struct usb_device *udev = data->udev;
1015
1016 /* Old firmware would otherwise execute USB reset */
1017 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1018 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1019 }
1020
1021 if (id->driver_info & BTUSB_SNIFFER) {
1022 struct usb_device *udev = data->udev;
1023
1024 /* New sniffer firmware has crippled HCI interface */
1025 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1026 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1027
1028 data->isoc = NULL;
1029 }
1030
1031 if (id->driver_info & BTUSB_BCM92035) {
1032 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1033 struct sk_buff *skb;
1034
1035 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1036 if (skb) {
1037 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1038 skb_queue_tail(&hdev->driver_init, skb);
1039 }
1040 }
1041
1042 if (data->isoc) {
1043 err = usb_driver_claim_interface(&btusb_driver,
1044 data->isoc, data);
1045 if (err < 0) {
1046 hci_free_dev(hdev);
1047 kfree(data);
1048 return err;
1049 }
1050 }
1051
1052 err = hci_register_dev(hdev);
1053 if (err < 0) {
1054 hci_free_dev(hdev);
1055 kfree(data);
1056 return err;
1057 }
1058
1059 usb_set_intfdata(intf, data);
1060
1061 return 0;
1062 }
1063
1064 static void btusb_disconnect(struct usb_interface *intf)
1065 {
1066 struct btusb_data *data = usb_get_intfdata(intf);
1067 struct hci_dev *hdev;
1068
1069 BT_DBG("intf %p", intf);
1070
1071 if (!data)
1072 return;
1073
1074 hdev = data->hdev;
1075
1076 __hci_dev_hold(hdev);
1077
1078 usb_set_intfdata(data->intf, NULL);
1079
1080 if (data->isoc)
1081 usb_set_intfdata(data->isoc, NULL);
1082
1083 hci_unregister_dev(hdev);
1084
1085 if (intf == data->isoc)
1086 usb_driver_release_interface(&btusb_driver, data->intf);
1087 else if (data->isoc)
1088 usb_driver_release_interface(&btusb_driver, data->isoc);
1089
1090 __hci_dev_put(hdev);
1091
1092 hci_free_dev(hdev);
1093 }
1094
1095 #ifdef CONFIG_PM
1096 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1097 {
1098 struct btusb_data *data = usb_get_intfdata(intf);
1099
1100 BT_DBG("intf %p", intf);
1101
1102 if (data->suspend_count++)
1103 return 0;
1104
1105 spin_lock_irq(&data->txlock);
1106 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1107 set_bit(BTUSB_SUSPENDING, &data->flags);
1108 spin_unlock_irq(&data->txlock);
1109 } else {
1110 spin_unlock_irq(&data->txlock);
1111 data->suspend_count--;
1112 return -EBUSY;
1113 }
1114
1115 cancel_work_sync(&data->work);
1116
1117 btusb_stop_traffic(data);
1118 usb_kill_anchored_urbs(&data->tx_anchor);
1119
1120 return 0;
1121 }
1122
1123 static void play_deferred(struct btusb_data *data)
1124 {
1125 struct urb *urb;
1126 int err;
1127
1128 while ((urb = usb_get_from_anchor(&data->deferred))) {
1129 err = usb_submit_urb(urb, GFP_ATOMIC);
1130 if (err < 0)
1131 break;
1132
1133 data->tx_in_flight++;
1134 }
1135 usb_scuttle_anchored_urbs(&data->deferred);
1136 }
1137
1138 static int btusb_resume(struct usb_interface *intf)
1139 {
1140 struct btusb_data *data = usb_get_intfdata(intf);
1141 struct hci_dev *hdev = data->hdev;
1142 int err = 0;
1143
1144 BT_DBG("intf %p", intf);
1145
1146 if (--data->suspend_count)
1147 return 0;
1148
1149 if (!test_bit(HCI_RUNNING, &hdev->flags))
1150 goto done;
1151
1152 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1153 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1154 if (err < 0) {
1155 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1156 goto failed;
1157 }
1158 }
1159
1160 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1161 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1162 if (err < 0) {
1163 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1164 goto failed;
1165 }
1166
1167 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1168 }
1169
1170 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1171 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1172 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1173 else
1174 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1175 }
1176
1177 spin_lock_irq(&data->txlock);
1178 play_deferred(data);
1179 clear_bit(BTUSB_SUSPENDING, &data->flags);
1180 spin_unlock_irq(&data->txlock);
1181 schedule_work(&data->work);
1182
1183 return 0;
1184
1185 failed:
1186 usb_scuttle_anchored_urbs(&data->deferred);
1187 done:
1188 spin_lock_irq(&data->txlock);
1189 clear_bit(BTUSB_SUSPENDING, &data->flags);
1190 spin_unlock_irq(&data->txlock);
1191
1192 return err;
1193 }
1194 #endif
1195
1196 static struct usb_driver btusb_driver = {
1197 .name = "btusb",
1198 .probe = btusb_probe,
1199 .disconnect = btusb_disconnect,
1200 #ifdef CONFIG_PM
1201 .suspend = btusb_suspend,
1202 .resume = btusb_resume,
1203 #endif
1204 .id_table = btusb_table,
1205 .supports_autosuspend = 1,
1206 };
1207
1208 static int __init btusb_init(void)
1209 {
1210 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1211
1212 return usb_register(&btusb_driver);
1213 }
1214
1215 static void __exit btusb_exit(void)
1216 {
1217 usb_deregister(&btusb_driver);
1218 }
1219
1220 module_init(btusb_init);
1221 module_exit(btusb_exit);
1222
1223 module_param(ignore_dga, bool, 0644);
1224 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1225
1226 module_param(ignore_csr, bool, 0644);
1227 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1228
1229 module_param(ignore_sniffer, bool, 0644);
1230 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1231
1232 module_param(disable_scofix, bool, 0644);
1233 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1234
1235 module_param(force_scofix, bool, 0644);
1236 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1237
1238 module_param(reset, bool, 0644);
1239 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1240
1241 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1242 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1243 MODULE_VERSION(VERSION);
1244 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree