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Bluetooth: Release BTM while sleeping to avoid deadlock
[deliverable/linux.git] / drivers / bluetooth / btusb.c
CommitLineData
5e23b923
MH		 1/*
2 *
3 * Generic Bluetooth USB driver
4 *
9bfa35fe 5 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
5e23b923
MH		 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
7bee549e 38#define VERSION "0.6"
cfeb4145
MH		 39
40static int ignore_dga;
41static int ignore_csr;
42static int ignore_sniffer;
43static int disable_scofix;
44static int force_scofix;
7a9d4020
MH		 45
46static int reset = 1;
cfeb4145
MH		 47
48static struct usb_driver btusb_driver;
49
50#define BTUSB_IGNORE 0x01
7a9d4020
MH		 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
5e23b923
MH		 57
58static struct usb_device_id btusb_table[] = {
59 /* Generic Bluetooth USB device */
60 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
61
3cd01976
NI		 62 /* Apple MacBookPro 7,1 */
63 { USB_DEVICE(0x05ac, 0x8213) },
64
0a79f674
CL		 65 /* Apple iMac11,1 */
66 { USB_DEVICE(0x05ac, 0x8215) },
67
9c047157
NI		 68 /* Apple MacBookPro6,2 */
69 { USB_DEVICE(0x05ac, 0x8218) },
70
3e3ede7d
EH		 71 /* Apple MacBookAir3,1, MacBookAir3,2 */
72 { USB_DEVICE(0x05ac, 0x821b) },
73
cfeb4145
MH		 74 /* AVM BlueFRITZ! USB v2.0 */
75 { USB_DEVICE(0x057c, 0x3800) },
76
77 /* Bluetooth Ultraport Module from IBM */
78 { USB_DEVICE(0x04bf, 0x030a) },
79
80 /* ALPS Modules with non-standard id */
81 { USB_DEVICE(0x044e, 0x3001) },
82 { USB_DEVICE(0x044e, 0x3002) },
83
84 /* Ericsson with non-standard id */
85 { USB_DEVICE(0x0bdb, 0x1002) },
86
87 /* Canyon CN-BTU1 with HID interfaces */
7a9d4020 88 { USB_DEVICE(0x0c10, 0x0000) },
cfeb4145 89
5e23b923
MH		 90 { } /* Terminating entry */
91};
92
93MODULE_DEVICE_TABLE(usb, btusb_table);
94
95static struct usb_device_id blacklist_table[] = {
cfeb4145
MH		 96 /* CSR BlueCore devices */
97 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
98
99 /* Broadcom BCM2033 without firmware */
100 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
101
be93112a
BS		 102 /* Atheros 3011 with sflash firmware */
103 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
104
509e7861
CYC		 105 /* Atheros AR9285 Malbec with sflash firmware */
106 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
107
cfeb4145 108 /* Broadcom BCM2035 */
7a9d4020
MH		 109 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
110 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
111 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
cfeb4145
MH		 112
113 /* Broadcom BCM2045 */
7a9d4020
MH		 114 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
115 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
bdbef3d6 116
cfeb4145 117 /* IBM/Lenovo ThinkPad with Broadcom chip */
7a9d4020
MH		 118 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
119 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145
MH		 120
121 /* HP laptop with Broadcom chip */
7a9d4020 122 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145
MH		 123
124 /* Dell laptop with Broadcom chip */
7a9d4020 125 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 126
5ddd4a60 127 /* Dell Wireless 370 and 410 devices */
7a9d4020 128 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
5ddd4a60 129 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 130
7a9d4020
MH		 131 /* Belkin F8T012 and F8T013 devices */
132 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
133 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 134
5ddd4a60
MH		 135 /* Asus WL-BTD202 device */
136 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
137
138 /* Kensington Bluetooth USB adapter */
139 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
140
cfeb4145
MH		 141 /* RTX Telecom based adapters with buggy SCO support */
142 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
143 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
144
145 /* CONWISE Technology based adapters with buggy SCO support */
146 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
147
cfeb4145
MH		 148 /* Digianswer devices */
149 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
150 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
151
152 /* CSR BlueCore Bluetooth Sniffer */
153 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
154
155 /* Frontline ComProbe Bluetooth Sniffer */
156 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
157
5e23b923
MH		 158 { } /* Terminating entry */
159};
160
9bfa35fe
MH		 161#define BTUSB_MAX_ISOC_FRAMES 10
162
5e23b923
MH		 163#define BTUSB_INTR_RUNNING 0
164#define BTUSB_BULK_RUNNING 1
9bfa35fe 165#define BTUSB_ISOC_RUNNING 2
7bee549e 166#define BTUSB_SUSPENDING 3
08b8b6c4 167#define BTUSB_DID_ISO_RESUME 4
5e23b923
MH		 168
169struct btusb_data {
170 struct hci_dev *hdev;
171 struct usb_device *udev;
5fbcd260 172 struct usb_interface *intf;
9bfa35fe 173 struct usb_interface *isoc;
5e23b923
MH		 174
175 spinlock_t lock;
176
177 unsigned long flags;
178
179 struct work_struct work;
7bee549e 180 struct work_struct waker;
5e23b923
MH		 181
182 struct usb_anchor tx_anchor;
183 struct usb_anchor intr_anchor;
184 struct usb_anchor bulk_anchor;
9bfa35fe 185 struct usb_anchor isoc_anchor;
7bee549e
ON		 186 struct usb_anchor deferred;
187 int tx_in_flight;
188 spinlock_t txlock;
5e23b923
MH		 189
190 struct usb_endpoint_descriptor *intr_ep;
191 struct usb_endpoint_descriptor *bulk_tx_ep;
192 struct usb_endpoint_descriptor *bulk_rx_ep;
9bfa35fe
MH		 193 struct usb_endpoint_descriptor *isoc_tx_ep;
194 struct usb_endpoint_descriptor *isoc_rx_ep;
195
7a9d4020
MH		 196 __u8 cmdreq_type;
197
43c2e57f 198 unsigned int sco_num;
9bfa35fe 199 int isoc_altsetting;
6a88adf2 200 int suspend_count;
5e23b923
MH		 201};
202
7bee549e
ON		 203static int inc_tx(struct btusb_data *data)
204{
205 unsigned long flags;
206 int rv;
207
208 spin_lock_irqsave(&data->txlock, flags);
209 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
210 if (!rv)
211 data->tx_in_flight++;
212 spin_unlock_irqrestore(&data->txlock, flags);
213
214 return rv;
215}
216
5e23b923
MH		 217static void btusb_intr_complete(struct urb *urb)
218{
219 struct hci_dev *hdev = urb->context;
220 struct btusb_data *data = hdev->driver_data;
221 int err;
222
223 BT_DBG("%s urb %p status %d count %d", hdev->name,
224 urb, urb->status, urb->actual_length);
225
226 if (!test_bit(HCI_RUNNING, &hdev->flags))
227 return;
228
229 if (urb->status == 0) {
9bfa35fe
MH		 230 hdev->stat.byte_rx += urb->actual_length;
231
5e23b923
MH		 232 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
233 urb->transfer_buffer,
234 urb->actual_length) < 0) {
235 BT_ERR("%s corrupted event packet", hdev->name);
236 hdev->stat.err_rx++;
237 }
238 }
239
240 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
241 return;
242
7bee549e 243 usb_mark_last_busy(data->udev);
5e23b923
MH		 244 usb_anchor_urb(urb, &data->intr_anchor);
245
246 err = usb_submit_urb(urb, GFP_ATOMIC);
247 if (err < 0) {
61faddf6
SS		 248 if (err != -EPERM)
249 BT_ERR("%s urb %p failed to resubmit (%d)",
5e23b923
MH		 250 hdev->name, urb, -err);
251 usb_unanchor_urb(urb);
252 }
253}
254
2eda66f4 255static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
5e23b923
MH		 256{
257 struct btusb_data *data = hdev->driver_data;
258 struct urb *urb;
259 unsigned char *buf;
260 unsigned int pipe;
261 int err, size;
262
263 BT_DBG("%s", hdev->name);
264
9bfa35fe
MH		 265 if (!data->intr_ep)
266 return -ENODEV;
267
2eda66f4 268 urb = usb_alloc_urb(0, mem_flags);
5e23b923
MH		 269 if (!urb)
270 return -ENOMEM;
271
272 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
273
2eda66f4 274 buf = kmalloc(size, mem_flags);
5e23b923
MH		 275 if (!buf) {
276 usb_free_urb(urb);
277 return -ENOMEM;
278 }
279
280 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
281
282 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
283 btusb_intr_complete, hdev,
284 data->intr_ep->bInterval);
285
286 urb->transfer_flags |= URB_FREE_BUFFER;
287
288 usb_anchor_urb(urb, &data->intr_anchor);
289
2eda66f4 290 err = usb_submit_urb(urb, mem_flags);
5e23b923
MH		 291 if (err < 0) {
292 BT_ERR("%s urb %p submission failed (%d)",
293 hdev->name, urb, -err);
294 usb_unanchor_urb(urb);
5e23b923
MH		 295 }
296
297 usb_free_urb(urb);
298
299 return err;
300}
301
302static void btusb_bulk_complete(struct urb *urb)
303{
304 struct hci_dev *hdev = urb->context;
305 struct btusb_data *data = hdev->driver_data;
306 int err;
307
308 BT_DBG("%s urb %p status %d count %d", hdev->name,
309 urb, urb->status, urb->actual_length);
310
311 if (!test_bit(HCI_RUNNING, &hdev->flags))
312 return;
313
314 if (urb->status == 0) {
9bfa35fe
MH		 315 hdev->stat.byte_rx += urb->actual_length;
316
5e23b923
MH		 317 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
318 urb->transfer_buffer,
319 urb->actual_length) < 0) {
320 BT_ERR("%s corrupted ACL packet", hdev->name);
321 hdev->stat.err_rx++;
322 }
323 }
324
325 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
326 return;
327
328 usb_anchor_urb(urb, &data->bulk_anchor);
652fd781 329 usb_mark_last_busy(data->udev);
5e23b923
MH		 330
331 err = usb_submit_urb(urb, GFP_ATOMIC);
332 if (err < 0) {
61faddf6
SS		 333 if (err != -EPERM)
334 BT_ERR("%s urb %p failed to resubmit (%d)",
5e23b923
MH		 335 hdev->name, urb, -err);
336 usb_unanchor_urb(urb);
337 }
338}
339
2eda66f4 340static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
5e23b923
MH		 341{
342 struct btusb_data *data = hdev->driver_data;
343 struct urb *urb;
344 unsigned char *buf;
345 unsigned int pipe;
290ba200 346 int err, size = HCI_MAX_FRAME_SIZE;
5e23b923
MH		 347
348 BT_DBG("%s", hdev->name);
349
9bfa35fe
MH		 350 if (!data->bulk_rx_ep)
351 return -ENODEV;
352
2eda66f4 353 urb = usb_alloc_urb(0, mem_flags);
5e23b923
MH		 354 if (!urb)
355 return -ENOMEM;
356
2eda66f4 357 buf = kmalloc(size, mem_flags);
5e23b923
MH		 358 if (!buf) {
359 usb_free_urb(urb);
360 return -ENOMEM;
361 }
362
363 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
364
365 usb_fill_bulk_urb(urb, data->udev, pipe,
366 buf, size, btusb_bulk_complete, hdev);
367
368 urb->transfer_flags |= URB_FREE_BUFFER;
369
7bee549e 370 usb_mark_last_busy(data->udev);
5e23b923
MH		 371 usb_anchor_urb(urb, &data->bulk_anchor);
372
2eda66f4 373 err = usb_submit_urb(urb, mem_flags);
5e23b923
MH		 374 if (err < 0) {
375 BT_ERR("%s urb %p submission failed (%d)",
376 hdev->name, urb, -err);
377 usb_unanchor_urb(urb);
5e23b923
MH		 378 }
379
380 usb_free_urb(urb);
381
382 return err;
383}
384
9bfa35fe
MH		 385static void btusb_isoc_complete(struct urb *urb)
386{
387 struct hci_dev *hdev = urb->context;
388 struct btusb_data *data = hdev->driver_data;
389 int i, err;
390
391 BT_DBG("%s urb %p status %d count %d", hdev->name,
392 urb, urb->status, urb->actual_length);
393
394 if (!test_bit(HCI_RUNNING, &hdev->flags))
395 return;
396
397 if (urb->status == 0) {
398 for (i = 0; i < urb->number_of_packets; i++) {
399 unsigned int offset = urb->iso_frame_desc[i].offset;
400 unsigned int length = urb->iso_frame_desc[i].actual_length;
401
402 if (urb->iso_frame_desc[i].status)
403 continue;
404
405 hdev->stat.byte_rx += length;
406
407 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
408 urb->transfer_buffer + offset,
409 length) < 0) {
410 BT_ERR("%s corrupted SCO packet", hdev->name);
411 hdev->stat.err_rx++;
412 }
413 }
414 }
415
416 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
417 return;
418
419 usb_anchor_urb(urb, &data->isoc_anchor);
420
421 err = usb_submit_urb(urb, GFP_ATOMIC);
422 if (err < 0) {
61faddf6
SS		 423 if (err != -EPERM)
424 BT_ERR("%s urb %p failed to resubmit (%d)",
9bfa35fe
MH		 425 hdev->name, urb, -err);
426 usb_unanchor_urb(urb);
427 }
428}
429
430static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
431{
432 int i, offset = 0;
433
434 BT_DBG("len %d mtu %d", len, mtu);
435
436 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
437 i++, offset += mtu, len -= mtu) {
438 urb->iso_frame_desc[i].offset = offset;
439 urb->iso_frame_desc[i].length = mtu;
440 }
441
442 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
443 urb->iso_frame_desc[i].offset = offset;
444 urb->iso_frame_desc[i].length = len;
445 i++;
446 }
447
448 urb->number_of_packets = i;
449}
450
2eda66f4 451static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
9bfa35fe
MH		 452{
453 struct btusb_data *data = hdev->driver_data;
454 struct urb *urb;
455 unsigned char *buf;
456 unsigned int pipe;
457 int err, size;
458
459 BT_DBG("%s", hdev->name);
460
461 if (!data->isoc_rx_ep)
462 return -ENODEV;
463
2eda66f4 464 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
9bfa35fe
MH		 465 if (!urb)
466 return -ENOMEM;
467
468 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
469 BTUSB_MAX_ISOC_FRAMES;
470
2eda66f4 471 buf = kmalloc(size, mem_flags);
9bfa35fe
MH		 472 if (!buf) {
473 usb_free_urb(urb);
474 return -ENOMEM;
475 }
476
477 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
478
479 urb->dev = data->udev;
480 urb->pipe = pipe;
481 urb->context = hdev;
482 urb->complete = btusb_isoc_complete;
483 urb->interval = data->isoc_rx_ep->bInterval;
484
485 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
486 urb->transfer_buffer = buf;
487 urb->transfer_buffer_length = size;
488
489 __fill_isoc_descriptor(urb, size,
490 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
491
492 usb_anchor_urb(urb, &data->isoc_anchor);
493
2eda66f4 494 err = usb_submit_urb(urb, mem_flags);
9bfa35fe
MH		 495 if (err < 0) {
496 BT_ERR("%s urb %p submission failed (%d)",
497 hdev->name, urb, -err);
498 usb_unanchor_urb(urb);
9bfa35fe
MH		 499 }
500
501 usb_free_urb(urb);
502
503 return err;
504}
505
5e23b923 506static void btusb_tx_complete(struct urb *urb)
7bee549e
ON		 507{
508 struct sk_buff *skb = urb->context;
509 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
510 struct btusb_data *data = hdev->driver_data;
511
512 BT_DBG("%s urb %p status %d count %d", hdev->name,
513 urb, urb->status, urb->actual_length);
514
515 if (!test_bit(HCI_RUNNING, &hdev->flags))
516 goto done;
517
518 if (!urb->status)
519 hdev->stat.byte_tx += urb->transfer_buffer_length;
520 else
521 hdev->stat.err_tx++;
522
523done:
524 spin_lock(&data->txlock);
525 data->tx_in_flight--;
526 spin_unlock(&data->txlock);
527
528 kfree(urb->setup_packet);
529
530 kfree_skb(skb);
531}
532
533static void btusb_isoc_tx_complete(struct urb *urb)
5e23b923
MH		 534{
535 struct sk_buff *skb = urb->context;
536 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
537
538 BT_DBG("%s urb %p status %d count %d", hdev->name,
539 urb, urb->status, urb->actual_length);
540
541 if (!test_bit(HCI_RUNNING, &hdev->flags))
542 goto done;
543
544 if (!urb->status)
545 hdev->stat.byte_tx += urb->transfer_buffer_length;
546 else
547 hdev->stat.err_tx++;
548
549done:
550 kfree(urb->setup_packet);
551
552 kfree_skb(skb);
553}
554
555static int btusb_open(struct hci_dev *hdev)
556{
557 struct btusb_data *data = hdev->driver_data;
558 int err;
559
560 BT_DBG("%s", hdev->name);
561
7bee549e
ON		 562 err = usb_autopm_get_interface(data->intf);
563 if (err < 0)
564 return err;
565
566 data->intf->needs_remote_wakeup = 1;
567
5e23b923 568 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
7bee549e 569 goto done;
5e23b923
MH		 570
571 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
7bee549e 572 goto done;
5e23b923 573
2eda66f4 574 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
43c2e57f
MH		 575 if (err < 0)
576 goto failed;
577
578 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
5e23b923 579 if (err < 0) {
43c2e57f
MH		 580 usb_kill_anchored_urbs(&data->intr_anchor);
581 goto failed;
5e23b923
MH		 582 }
583
43c2e57f
MH		 584 set_bit(BTUSB_BULK_RUNNING, &data->flags);
585 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
586
7bee549e
ON		 587done:
588 usb_autopm_put_interface(data->intf);
43c2e57f
MH		 589 return 0;
590
591failed:
592 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
593 clear_bit(HCI_RUNNING, &hdev->flags);
7bee549e 594 usb_autopm_put_interface(data->intf);
5e23b923
MH		 595 return err;
596}
597
7bee549e
ON		 598static void btusb_stop_traffic(struct btusb_data *data)
599{
600 usb_kill_anchored_urbs(&data->intr_anchor);
601 usb_kill_anchored_urbs(&data->bulk_anchor);
602 usb_kill_anchored_urbs(&data->isoc_anchor);
603}
604
5e23b923
MH		 605static int btusb_close(struct hci_dev *hdev)
606{
607 struct btusb_data *data = hdev->driver_data;
7bee549e 608 int err;
5e23b923
MH		 609
610 BT_DBG("%s", hdev->name);
611
612 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
613 return 0;
614
e8c3c3d2 615 cancel_work_sync(&data->work);
404291ac 616 cancel_work_sync(&data->waker);
e8c3c3d2 617
9bfa35fe 618 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
5e23b923 619 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
5e23b923 620 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
7bee549e
ON		 621
622 btusb_stop_traffic(data);
623 err = usb_autopm_get_interface(data->intf);
624 if (err < 0)
7b8e2c1d 625 goto failed;
7bee549e
ON		 626
627 data->intf->needs_remote_wakeup = 0;
628 usb_autopm_put_interface(data->intf);
5e23b923 629
7b8e2c1d
ON		 630failed:
631 usb_scuttle_anchored_urbs(&data->deferred);
5e23b923
MH		 632 return 0;
633}
634
635static int btusb_flush(struct hci_dev *hdev)
636{
637 struct btusb_data *data = hdev->driver_data;
638
639 BT_DBG("%s", hdev->name);
640
641 usb_kill_anchored_urbs(&data->tx_anchor);
642
643 return 0;
644}
645
646static int btusb_send_frame(struct sk_buff *skb)
647{
648 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
649 struct btusb_data *data = hdev->driver_data;
650 struct usb_ctrlrequest *dr;
651 struct urb *urb;
652 unsigned int pipe;
653 int err;
654
655 BT_DBG("%s", hdev->name);
656
657 if (!test_bit(HCI_RUNNING, &hdev->flags))
658 return -EBUSY;
659
660 switch (bt_cb(skb)->pkt_type) {
661 case HCI_COMMAND_PKT:
662 urb = usb_alloc_urb(0, GFP_ATOMIC);
663 if (!urb)
664 return -ENOMEM;
665
666 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
667 if (!dr) {
668 usb_free_urb(urb);
669 return -ENOMEM;
670 }
671
7a9d4020 672 dr->bRequestType = data->cmdreq_type;
5e23b923
MH		 673 dr->bRequest = 0;
674 dr->wIndex = 0;
675 dr->wValue = 0;
676 dr->wLength = __cpu_to_le16(skb->len);
677
678 pipe = usb_sndctrlpipe(data->udev, 0x00);
679
680 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
681 skb->data, skb->len, btusb_tx_complete, skb);
682
683 hdev->stat.cmd_tx++;
684 break;
685
686 case HCI_ACLDATA_PKT:
9bfa35fe
MH		 687 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
688 return -ENODEV;
689
5e23b923
MH		 690 urb = usb_alloc_urb(0, GFP_ATOMIC);
691 if (!urb)
692 return -ENOMEM;
693
694 pipe = usb_sndbulkpipe(data->udev,
695 data->bulk_tx_ep->bEndpointAddress);
696
697 usb_fill_bulk_urb(urb, data->udev, pipe,
698 skb->data, skb->len, btusb_tx_complete, skb);
699
700 hdev->stat.acl_tx++;
701 break;
702
703 case HCI_SCODATA_PKT:
9bfa35fe
MH		 704 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
705 return -ENODEV;
706
707 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
708 if (!urb)
709 return -ENOMEM;
710
711 pipe = usb_sndisocpipe(data->udev,
712 data->isoc_tx_ep->bEndpointAddress);
713
714 urb->dev = data->udev;
715 urb->pipe = pipe;
716 urb->context = skb;
7bee549e 717 urb->complete = btusb_isoc_tx_complete;
9bfa35fe
MH		 718 urb->interval = data->isoc_tx_ep->bInterval;
719
720 urb->transfer_flags = URB_ISO_ASAP;
721 urb->transfer_buffer = skb->data;
722 urb->transfer_buffer_length = skb->len;
723
724 __fill_isoc_descriptor(urb, skb->len,
725 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
726
5e23b923 727 hdev->stat.sco_tx++;
7bee549e 728 goto skip_waking;
5e23b923
MH		 729
730 default:
731 return -EILSEQ;
732 }
733
7bee549e
ON		 734 err = inc_tx(data);
735 if (err) {
736 usb_anchor_urb(urb, &data->deferred);
737 schedule_work(&data->waker);
738 err = 0;
739 goto done;
740 }
741
742skip_waking:
5e23b923
MH		 743 usb_anchor_urb(urb, &data->tx_anchor);
744
745 err = usb_submit_urb(urb, GFP_ATOMIC);
746 if (err < 0) {
747 BT_ERR("%s urb %p submission failed", hdev->name, urb);
748 kfree(urb->setup_packet);
749 usb_unanchor_urb(urb);
7bee549e
ON		 750 } else {
751 usb_mark_last_busy(data->udev);
5e23b923
MH		 752 }
753
754 usb_free_urb(urb);
755
7bee549e 756done:
5e23b923
MH		 757 return err;
758}
759
760static void btusb_destruct(struct hci_dev *hdev)
761{
762 struct btusb_data *data = hdev->driver_data;
763
764 BT_DBG("%s", hdev->name);
765
766 kfree(data);
767}
768
769static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
770{
771 struct btusb_data *data = hdev->driver_data;
772
773 BT_DBG("%s evt %d", hdev->name, evt);
774
43c2e57f
MH		 775 if (hdev->conn_hash.sco_num != data->sco_num) {
776 data->sco_num = hdev->conn_hash.sco_num;
777 schedule_work(&data->work);
a780efa8 778 }
5e23b923
MH		 779}
780
9bfa35fe
MH		 781static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
782{
783 struct btusb_data *data = hdev->driver_data;
784 struct usb_interface *intf = data->isoc;
785 struct usb_endpoint_descriptor *ep_desc;
786 int i, err;
787
788 if (!data->isoc)
789 return -ENODEV;
790
791 err = usb_set_interface(data->udev, 1, altsetting);
792 if (err < 0) {
793 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
794 return err;
795 }
796
797 data->isoc_altsetting = altsetting;
798
799 data->isoc_tx_ep = NULL;
800 data->isoc_rx_ep = NULL;
801
802 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
803 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
804
805 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
806 data->isoc_tx_ep = ep_desc;
807 continue;
808 }
809
810 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
811 data->isoc_rx_ep = ep_desc;
812 continue;
813 }
814 }
815
816 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
817 BT_ERR("%s invalid SCO descriptors", hdev->name);
818 return -ENODEV;
819 }
820
821 return 0;
822}
823
5e23b923
MH		 824static void btusb_work(struct work_struct *work)
825{
826 struct btusb_data *data = container_of(work, struct btusb_data, work);
827 struct hci_dev *hdev = data->hdev;
7bee549e 828 int err;
5e23b923 829
9bfa35fe 830 if (hdev->conn_hash.sco_num > 0) {
08b8b6c4 831 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
8efdd0cd 832 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
7bee549e
ON		 833 if (err < 0) {
834 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
835 usb_kill_anchored_urbs(&data->isoc_anchor);
836 return;
837 }
838
08b8b6c4 839 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
7bee549e 840 }
9bfa35fe
MH		 841 if (data->isoc_altsetting != 2) {
842 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
843 usb_kill_anchored_urbs(&data->isoc_anchor);
844
845 if (__set_isoc_interface(hdev, 2) < 0)
846 return;
847 }
848
849 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2eda66f4 850 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
9bfa35fe
MH		 851 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
852 else
2eda66f4 853 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
9bfa35fe
MH		 854 }
855 } else {
856 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
857 usb_kill_anchored_urbs(&data->isoc_anchor);
858
859 __set_isoc_interface(hdev, 0);
08b8b6c4 860 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
8efdd0cd 861 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
5e23b923
MH		 862 }
863}
864
7bee549e
ON		 865static void btusb_waker(struct work_struct *work)
866{
867 struct btusb_data *data = container_of(work, struct btusb_data, waker);
868 int err;
869
870 err = usb_autopm_get_interface(data->intf);
871 if (err < 0)
872 return;
873
874 usb_autopm_put_interface(data->intf);
875}
876
5e23b923
MH		 877static int btusb_probe(struct usb_interface *intf,
878 const struct usb_device_id *id)
879{
880 struct usb_endpoint_descriptor *ep_desc;
881 struct btusb_data *data;
882 struct hci_dev *hdev;
883 int i, err;
884
885 BT_DBG("intf %p id %p", intf, id);
886
cfeb4145 887 /* interface numbers are hardcoded in the spec */
5e23b923
MH		 888 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
889 return -ENODEV;
890
891 if (!id->driver_info) {
892 const struct usb_device_id *match;
893 match = usb_match_id(intf, blacklist_table);
894 if (match)
895 id = match;
896 }
897
cfeb4145
MH		 898 if (id->driver_info == BTUSB_IGNORE)
899 return -ENODEV;
900
901 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
902 return -ENODEV;
903
904 if (ignore_csr && id->driver_info & BTUSB_CSR)
905 return -ENODEV;
906
907 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
908 return -ENODEV;
909
5e23b923
MH		 910 data = kzalloc(sizeof(*data), GFP_KERNEL);
911 if (!data)
912 return -ENOMEM;
913
914 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
915 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
916
917 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
918 data->intr_ep = ep_desc;
919 continue;
920 }
921
922 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
923 data->bulk_tx_ep = ep_desc;
924 continue;
925 }
926
927 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
928 data->bulk_rx_ep = ep_desc;
929 continue;
930 }
931 }
932
933 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
934 kfree(data);
935 return -ENODEV;
936 }
937
7a9d4020
MH		 938 data->cmdreq_type = USB_TYPE_CLASS;
939
5e23b923 940 data->udev = interface_to_usbdev(intf);
5fbcd260 941 data->intf = intf;
5e23b923
MH		 942
943 spin_lock_init(&data->lock);
944
945 INIT_WORK(&data->work, btusb_work);
7bee549e
ON		 946 INIT_WORK(&data->waker, btusb_waker);
947 spin_lock_init(&data->txlock);
5e23b923
MH		 948
949 init_usb_anchor(&data->tx_anchor);
950 init_usb_anchor(&data->intr_anchor);
951 init_usb_anchor(&data->bulk_anchor);
9bfa35fe 952 init_usb_anchor(&data->isoc_anchor);
7bee549e 953 init_usb_anchor(&data->deferred);
5e23b923
MH		 954
955 hdev = hci_alloc_dev();
956 if (!hdev) {
957 kfree(data);
958 return -ENOMEM;
959 }
960
c13854ce 961 hdev->bus = HCI_USB;
5e23b923
MH		 962 hdev->driver_data = data;
963
964 data->hdev = hdev;
965
966 SET_HCIDEV_DEV(hdev, &intf->dev);
967
968 hdev->open = btusb_open;
969 hdev->close = btusb_close;
970 hdev->flush = btusb_flush;
971 hdev->send = btusb_send_frame;
972 hdev->destruct = btusb_destruct;
973 hdev->notify = btusb_notify;
974
975 hdev->owner = THIS_MODULE;
976
7a9d4020 977 /* Interface numbers are hardcoded in the specification */
9bfa35fe
MH		 978 data->isoc = usb_ifnum_to_if(data->udev, 1);
979
7a9d4020
MH		 980 if (!reset)
981 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
cfeb4145
MH		 982
983 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
984 if (!disable_scofix)
985 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
986 }
987
9bfa35fe
MH		 988 if (id->driver_info & BTUSB_BROKEN_ISOC)
989 data->isoc = NULL;
990
7a9d4020
MH		 991 if (id->driver_info & BTUSB_DIGIANSWER) {
992 data->cmdreq_type = USB_TYPE_VENDOR;
993 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
994 }
995
996 if (id->driver_info & BTUSB_CSR) {
997 struct usb_device *udev = data->udev;
998
999 /* Old firmware would otherwise execute USB reset */
1000 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1001 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1002 }
1003
cfeb4145 1004 if (id->driver_info & BTUSB_SNIFFER) {
9bfa35fe 1005 struct usb_device *udev = data->udev;
cfeb4145 1006
7a9d4020 1007 /* New sniffer firmware has crippled HCI interface */
cfeb4145
MH		 1008 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1009 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
9bfa35fe
MH		 1010
1011 data->isoc = NULL;
cfeb4145
MH		 1012 }
1013
1014 if (id->driver_info & BTUSB_BCM92035) {
1015 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1016 struct sk_buff *skb;
1017
1018 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1019 if (skb) {
1020 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1021 skb_queue_tail(&hdev->driver_init, skb);
1022 }
1023 }
5e23b923 1024
9bfa35fe
MH		 1025 if (data->isoc) {
1026 err = usb_driver_claim_interface(&btusb_driver,
5fbcd260 1027 data->isoc, data);
9bfa35fe
MH		 1028 if (err < 0) {
1029 hci_free_dev(hdev);
1030 kfree(data);
1031 return err;
1032 }
1033 }
1034
5e23b923
MH		 1035 err = hci_register_dev(hdev);
1036 if (err < 0) {
1037 hci_free_dev(hdev);
1038 kfree(data);
1039 return err;
1040 }
1041
1042 usb_set_intfdata(intf, data);
1043
556ea928
MG		 1044 usb_enable_autosuspend(interface_to_usbdev(intf));
1045
5e23b923
MH		 1046 return 0;
1047}
1048
1049static void btusb_disconnect(struct usb_interface *intf)
1050{
1051 struct btusb_data *data = usb_get_intfdata(intf);
1052 struct hci_dev *hdev;
1053
1054 BT_DBG("intf %p", intf);
1055
1056 if (!data)
1057 return;
1058
1059 hdev = data->hdev;
1060
5fbcd260 1061 __hci_dev_hold(hdev);
9bfa35fe 1062
5fbcd260
MH		 1063 usb_set_intfdata(data->intf, NULL);
1064
1065 if (data->isoc)
1066 usb_set_intfdata(data->isoc, NULL);
5e23b923
MH		 1067
1068 hci_unregister_dev(hdev);
1069
5fbcd260
MH		 1070 if (intf == data->isoc)
1071 usb_driver_release_interface(&btusb_driver, data->intf);
1072 else if (data->isoc)
1073 usb_driver_release_interface(&btusb_driver, data->isoc);
1074
1075 __hci_dev_put(hdev);
1076
5e23b923
MH		 1077 hci_free_dev(hdev);
1078}
1079
7bee549e 1080#ifdef CONFIG_PM
6a88adf2
MH		 1081static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1082{
1083 struct btusb_data *data = usb_get_intfdata(intf);
1084
1085 BT_DBG("intf %p", intf);
1086
1087 if (data->suspend_count++)
1088 return 0;
1089
7bee549e 1090 spin_lock_irq(&data->txlock);
fb34d537 1091 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
7bee549e
ON		 1092 set_bit(BTUSB_SUSPENDING, &data->flags);
1093 spin_unlock_irq(&data->txlock);
1094 } else {
1095 spin_unlock_irq(&data->txlock);
1096 data->suspend_count--;
1097 return -EBUSY;
1098 }
1099
6a88adf2
MH		 1100 cancel_work_sync(&data->work);
1101
7bee549e 1102 btusb_stop_traffic(data);
6a88adf2
MH		 1103 usb_kill_anchored_urbs(&data->tx_anchor);
1104
6a88adf2
MH		 1105 return 0;
1106}
1107
7bee549e
ON		 1108static void play_deferred(struct btusb_data *data)
1109{
1110 struct urb *urb;
1111 int err;
1112
1113 while ((urb = usb_get_from_anchor(&data->deferred))) {
1114 err = usb_submit_urb(urb, GFP_ATOMIC);
1115 if (err < 0)
1116 break;
1117
1118 data->tx_in_flight++;
1119 }
1120 usb_scuttle_anchored_urbs(&data->deferred);
1121}
1122
6a88adf2
MH		 1123static int btusb_resume(struct usb_interface *intf)
1124{
1125 struct btusb_data *data = usb_get_intfdata(intf);
1126 struct hci_dev *hdev = data->hdev;
7bee549e 1127 int err = 0;
6a88adf2
MH		 1128
1129 BT_DBG("intf %p", intf);
1130
1131 if (--data->suspend_count)
1132 return 0;
1133
1134 if (!test_bit(HCI_RUNNING, &hdev->flags))
7bee549e 1135 goto done;
6a88adf2
MH		 1136
1137 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1138 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1139 if (err < 0) {
1140 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
7bee549e 1141 goto failed;
6a88adf2
MH		 1142 }
1143 }
1144
1145 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
43c2e57f
MH		 1146 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1147 if (err < 0) {
6a88adf2 1148 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
7bee549e
ON		 1149 goto failed;
1150 }
1151
1152 btusb_submit_bulk_urb(hdev, GFP_NOIO);
6a88adf2
MH		 1153 }
1154
1155 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1156 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1157 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1158 else
1159 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1160 }
1161
7bee549e
ON		 1162 spin_lock_irq(&data->txlock);
1163 play_deferred(data);
1164 clear_bit(BTUSB_SUSPENDING, &data->flags);
1165 spin_unlock_irq(&data->txlock);
1166 schedule_work(&data->work);
1167
6a88adf2 1168 return 0;
7bee549e
ON		 1169
1170failed:
1171 usb_scuttle_anchored_urbs(&data->deferred);
1172done:
1173 spin_lock_irq(&data->txlock);
1174 clear_bit(BTUSB_SUSPENDING, &data->flags);
1175 spin_unlock_irq(&data->txlock);
1176
1177 return err;
6a88adf2 1178}
7bee549e 1179#endif
6a88adf2 1180
5e23b923
MH		 1181static struct usb_driver btusb_driver = {
1182 .name = "btusb",
1183 .probe = btusb_probe,
1184 .disconnect = btusb_disconnect,
7bee549e 1185#ifdef CONFIG_PM
6a88adf2
MH		 1186 .suspend = btusb_suspend,
1187 .resume = btusb_resume,
7bee549e 1188#endif
5e23b923 1189 .id_table = btusb_table,
7bee549e 1190 .supports_autosuspend = 1,
5e23b923
MH		 1191};
1192
1193static int __init btusb_init(void)
1194{
1195 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1196
1197 return usb_register(&btusb_driver);
1198}
1199
1200static void __exit btusb_exit(void)
1201{
1202 usb_deregister(&btusb_driver);
1203}
1204
1205module_init(btusb_init);
1206module_exit(btusb_exit);
1207
cfeb4145
MH		 1208module_param(ignore_dga, bool, 0644);
1209MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1210
1211module_param(ignore_csr, bool, 0644);
1212MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1213
1214module_param(ignore_sniffer, bool, 0644);
1215MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1216
1217module_param(disable_scofix, bool, 0644);
1218MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1219
1220module_param(force_scofix, bool, 0644);
1221MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1222
1223module_param(reset, bool, 0644);
1224MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1225
5e23b923
MH		 1226MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1227MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1228MODULE_VERSION(VERSION);
1229MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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