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Bluetooth: Add Google's copyright to L2CAP
[mirror_ubuntu-bionic-kernel.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
0a79f674
CL		 62 /* Apple iMac11,1 */
63 { USB_DEVICE(0x05ac, 0x8215) },
64
cfeb4145
MH		 65 /* AVM BlueFRITZ! USB v2.0 */
66 { USB_DEVICE(0x057c, 0x3800) },
67
68 /* Bluetooth Ultraport Module from IBM */
69 { USB_DEVICE(0x04bf, 0x030a) },
70
71 /* ALPS Modules with non-standard id */
72 { USB_DEVICE(0x044e, 0x3001) },
73 { USB_DEVICE(0x044e, 0x3002) },
74
75 /* Ericsson with non-standard id */
76 { USB_DEVICE(0x0bdb, 0x1002) },
77
78 /* Canyon CN-BTU1 with HID interfaces */
7a9d4020 79 { USB_DEVICE(0x0c10, 0x0000) },
cfeb4145 80
5e23b923
MH		 81 { } /* Terminating entry */
82};
83
84MODULE_DEVICE_TABLE(usb, btusb_table);
85
86static struct usb_device_id blacklist_table[] = {
cfeb4145
MH		 87 /* CSR BlueCore devices */
88 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
89
90 /* Broadcom BCM2033 without firmware */
91 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
92
93 /* Broadcom BCM2035 */
7a9d4020
MH		 94 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
95 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
96 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
cfeb4145
MH		 97
98 /* Broadcom BCM2045 */
7a9d4020
MH		 99 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
100 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
bdbef3d6 101
cfeb4145 102 /* IBM/Lenovo ThinkPad with Broadcom chip */
7a9d4020
MH		 103 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
104 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145
MH		 105
106 /* HP laptop with Broadcom chip */
7a9d4020 107 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145
MH		 108
109 /* Dell laptop with Broadcom chip */
7a9d4020 110 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 111
5ddd4a60 112 /* Dell Wireless 370 and 410 devices */
7a9d4020 113 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
5ddd4a60 114 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 115
7a9d4020
MH		 116 /* Belkin F8T012 and F8T013 devices */
117 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
118 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 119
5ddd4a60
MH		 120 /* Asus WL-BTD202 device */
121 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
122
123 /* Kensington Bluetooth USB adapter */
124 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
125
cfeb4145
MH		 126 /* RTX Telecom based adapters with buggy SCO support */
127 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
128 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
129
130 /* CONWISE Technology based adapters with buggy SCO support */
131 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
132
cfeb4145
MH		 133 /* Digianswer devices */
134 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
135 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
136
137 /* CSR BlueCore Bluetooth Sniffer */
138 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
139
140 /* Frontline ComProbe Bluetooth Sniffer */
141 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
142
5e23b923
MH		 143 { } /* Terminating entry */
144};
145
9bfa35fe
MH		 146#define BTUSB_MAX_ISOC_FRAMES 10
147
5e23b923
MH		 148#define BTUSB_INTR_RUNNING 0
149#define BTUSB_BULK_RUNNING 1
9bfa35fe 150#define BTUSB_ISOC_RUNNING 2
7bee549e 151#define BTUSB_SUSPENDING 3
5e23b923
MH		 152
153struct btusb_data {
154 struct hci_dev *hdev;
155 struct usb_device *udev;
5fbcd260 156 struct usb_interface *intf;
9bfa35fe 157 struct usb_interface *isoc;
5e23b923
MH		 158
159 spinlock_t lock;
160
161 unsigned long flags;
162
163 struct work_struct work;
7bee549e 164 struct work_struct waker;
5e23b923
MH		 165
166 struct usb_anchor tx_anchor;
167 struct usb_anchor intr_anchor;
168 struct usb_anchor bulk_anchor;
9bfa35fe 169 struct usb_anchor isoc_anchor;
7bee549e
ON		 170 struct usb_anchor deferred;
171 int tx_in_flight;
172 spinlock_t txlock;
5e23b923
MH		 173
174 struct usb_endpoint_descriptor *intr_ep;
175 struct usb_endpoint_descriptor *bulk_tx_ep;
176 struct usb_endpoint_descriptor *bulk_rx_ep;
9bfa35fe
MH		 177 struct usb_endpoint_descriptor *isoc_tx_ep;
178 struct usb_endpoint_descriptor *isoc_rx_ep;
179
7a9d4020
MH		 180 __u8 cmdreq_type;
181
43c2e57f 182 unsigned int sco_num;
9bfa35fe 183 int isoc_altsetting;
6a88adf2 184 int suspend_count;
7bee549e 185 int did_iso_resume:1;
5e23b923
MH		 186};
187
7bee549e
ON		 188static int inc_tx(struct btusb_data *data)
189{
190 unsigned long flags;
191 int rv;
192
193 spin_lock_irqsave(&data->txlock, flags);
194 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
195 if (!rv)
196 data->tx_in_flight++;
197 spin_unlock_irqrestore(&data->txlock, flags);
198
199 return rv;
200}
201
5e23b923
MH		 202static void btusb_intr_complete(struct urb *urb)
203{
204 struct hci_dev *hdev = urb->context;
205 struct btusb_data *data = hdev->driver_data;
206 int err;
207
208 BT_DBG("%s urb %p status %d count %d", hdev->name,
209 urb, urb->status, urb->actual_length);
210
211 if (!test_bit(HCI_RUNNING, &hdev->flags))
212 return;
213
214 if (urb->status == 0) {
9bfa35fe
MH		 215 hdev->stat.byte_rx += urb->actual_length;
216
5e23b923
MH		 217 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
218 urb->transfer_buffer,
219 urb->actual_length) < 0) {
220 BT_ERR("%s corrupted event packet", hdev->name);
221 hdev->stat.err_rx++;
222 }
223 }
224
225 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
226 return;
227
7bee549e 228 usb_mark_last_busy(data->udev);
5e23b923
MH		 229 usb_anchor_urb(urb, &data->intr_anchor);
230
231 err = usb_submit_urb(urb, GFP_ATOMIC);
232 if (err < 0) {
233 BT_ERR("%s urb %p failed to resubmit (%d)",
234 hdev->name, urb, -err);
235 usb_unanchor_urb(urb);
236 }
237}
238
2eda66f4 239static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
5e23b923
MH		 240{
241 struct btusb_data *data = hdev->driver_data;
242 struct urb *urb;
243 unsigned char *buf;
244 unsigned int pipe;
245 int err, size;
246
247 BT_DBG("%s", hdev->name);
248
9bfa35fe
MH		 249 if (!data->intr_ep)
250 return -ENODEV;
251
2eda66f4 252 urb = usb_alloc_urb(0, mem_flags);
5e23b923
MH		 253 if (!urb)
254 return -ENOMEM;
255
256 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
257
2eda66f4 258 buf = kmalloc(size, mem_flags);
5e23b923
MH		 259 if (!buf) {
260 usb_free_urb(urb);
261 return -ENOMEM;
262 }
263
264 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
265
266 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
267 btusb_intr_complete, hdev,
268 data->intr_ep->bInterval);
269
270 urb->transfer_flags |= URB_FREE_BUFFER;
271
272 usb_anchor_urb(urb, &data->intr_anchor);
273
2eda66f4 274 err = usb_submit_urb(urb, mem_flags);
5e23b923
MH		 275 if (err < 0) {
276 BT_ERR("%s urb %p submission failed (%d)",
277 hdev->name, urb, -err);
278 usb_unanchor_urb(urb);
5e23b923
MH		 279 }
280
281 usb_free_urb(urb);
282
283 return err;
284}
285
286static void btusb_bulk_complete(struct urb *urb)
287{
288 struct hci_dev *hdev = urb->context;
289 struct btusb_data *data = hdev->driver_data;
290 int err;
291
292 BT_DBG("%s urb %p status %d count %d", hdev->name,
293 urb, urb->status, urb->actual_length);
294
295 if (!test_bit(HCI_RUNNING, &hdev->flags))
296 return;
297
298 if (urb->status == 0) {
9bfa35fe
MH		 299 hdev->stat.byte_rx += urb->actual_length;
300
5e23b923
MH		 301 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
302 urb->transfer_buffer,
303 urb->actual_length) < 0) {
304 BT_ERR("%s corrupted ACL packet", hdev->name);
305 hdev->stat.err_rx++;
306 }
307 }
308
309 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
310 return;
311
312 usb_anchor_urb(urb, &data->bulk_anchor);
652fd781 313 usb_mark_last_busy(data->udev);
5e23b923
MH		 314
315 err = usb_submit_urb(urb, GFP_ATOMIC);
316 if (err < 0) {
317 BT_ERR("%s urb %p failed to resubmit (%d)",
318 hdev->name, urb, -err);
319 usb_unanchor_urb(urb);
320 }
321}
322
2eda66f4 323static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
5e23b923
MH		 324{
325 struct btusb_data *data = hdev->driver_data;
326 struct urb *urb;
327 unsigned char *buf;
328 unsigned int pipe;
290ba200 329 int err, size = HCI_MAX_FRAME_SIZE;
5e23b923
MH		 330
331 BT_DBG("%s", hdev->name);
332
9bfa35fe
MH		 333 if (!data->bulk_rx_ep)
334 return -ENODEV;
335
2eda66f4 336 urb = usb_alloc_urb(0, mem_flags);
5e23b923
MH		 337 if (!urb)
338 return -ENOMEM;
339
2eda66f4 340 buf = kmalloc(size, mem_flags);
5e23b923
MH		 341 if (!buf) {
342 usb_free_urb(urb);
343 return -ENOMEM;
344 }
345
346 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
347
348 usb_fill_bulk_urb(urb, data->udev, pipe,
349 buf, size, btusb_bulk_complete, hdev);
350
351 urb->transfer_flags |= URB_FREE_BUFFER;
352
7bee549e 353 usb_mark_last_busy(data->udev);
5e23b923
MH		 354 usb_anchor_urb(urb, &data->bulk_anchor);
355
2eda66f4 356 err = usb_submit_urb(urb, mem_flags);
5e23b923
MH		 357 if (err < 0) {
358 BT_ERR("%s urb %p submission failed (%d)",
359 hdev->name, urb, -err);
360 usb_unanchor_urb(urb);
5e23b923
MH		 361 }
362
363 usb_free_urb(urb);
364
365 return err;
366}
367
9bfa35fe
MH		 368static void btusb_isoc_complete(struct urb *urb)
369{
370 struct hci_dev *hdev = urb->context;
371 struct btusb_data *data = hdev->driver_data;
372 int i, err;
373
374 BT_DBG("%s urb %p status %d count %d", hdev->name,
375 urb, urb->status, urb->actual_length);
376
377 if (!test_bit(HCI_RUNNING, &hdev->flags))
378 return;
379
380 if (urb->status == 0) {
381 for (i = 0; i < urb->number_of_packets; i++) {
382 unsigned int offset = urb->iso_frame_desc[i].offset;
383 unsigned int length = urb->iso_frame_desc[i].actual_length;
384
385 if (urb->iso_frame_desc[i].status)
386 continue;
387
388 hdev->stat.byte_rx += length;
389
390 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
391 urb->transfer_buffer + offset,
392 length) < 0) {
393 BT_ERR("%s corrupted SCO packet", hdev->name);
394 hdev->stat.err_rx++;
395 }
396 }
397 }
398
399 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
400 return;
401
402 usb_anchor_urb(urb, &data->isoc_anchor);
403
404 err = usb_submit_urb(urb, GFP_ATOMIC);
405 if (err < 0) {
406 BT_ERR("%s urb %p failed to resubmit (%d)",
407 hdev->name, urb, -err);
408 usb_unanchor_urb(urb);
409 }
410}
411
412static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
413{
414 int i, offset = 0;
415
416 BT_DBG("len %d mtu %d", len, mtu);
417
418 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
419 i++, offset += mtu, len -= mtu) {
420 urb->iso_frame_desc[i].offset = offset;
421 urb->iso_frame_desc[i].length = mtu;
422 }
423
424 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
425 urb->iso_frame_desc[i].offset = offset;
426 urb->iso_frame_desc[i].length = len;
427 i++;
428 }
429
430 urb->number_of_packets = i;
431}
432
2eda66f4 433static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
9bfa35fe
MH		 434{
435 struct btusb_data *data = hdev->driver_data;
436 struct urb *urb;
437 unsigned char *buf;
438 unsigned int pipe;
439 int err, size;
440
441 BT_DBG("%s", hdev->name);
442
443 if (!data->isoc_rx_ep)
444 return -ENODEV;
445
2eda66f4 446 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
9bfa35fe
MH		 447 if (!urb)
448 return -ENOMEM;
449
450 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
451 BTUSB_MAX_ISOC_FRAMES;
452
2eda66f4 453 buf = kmalloc(size, mem_flags);
9bfa35fe
MH		 454 if (!buf) {
455 usb_free_urb(urb);
456 return -ENOMEM;
457 }
458
459 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
460
461 urb->dev = data->udev;
462 urb->pipe = pipe;
463 urb->context = hdev;
464 urb->complete = btusb_isoc_complete;
465 urb->interval = data->isoc_rx_ep->bInterval;
466
467 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
468 urb->transfer_buffer = buf;
469 urb->transfer_buffer_length = size;
470
471 __fill_isoc_descriptor(urb, size,
472 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
473
474 usb_anchor_urb(urb, &data->isoc_anchor);
475
2eda66f4 476 err = usb_submit_urb(urb, mem_flags);
9bfa35fe
MH		 477 if (err < 0) {
478 BT_ERR("%s urb %p submission failed (%d)",
479 hdev->name, urb, -err);
480 usb_unanchor_urb(urb);
9bfa35fe
MH		 481 }
482
483 usb_free_urb(urb);
484
485 return err;
486}
487
5e23b923 488static void btusb_tx_complete(struct urb *urb)
7bee549e
ON		 489{
490 struct sk_buff *skb = urb->context;
491 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
492 struct btusb_data *data = hdev->driver_data;
493
494 BT_DBG("%s urb %p status %d count %d", hdev->name,
495 urb, urb->status, urb->actual_length);
496
497 if (!test_bit(HCI_RUNNING, &hdev->flags))
498 goto done;
499
500 if (!urb->status)
501 hdev->stat.byte_tx += urb->transfer_buffer_length;
502 else
503 hdev->stat.err_tx++;
504
505done:
506 spin_lock(&data->txlock);
507 data->tx_in_flight--;
508 spin_unlock(&data->txlock);
509
510 kfree(urb->setup_packet);
511
512 kfree_skb(skb);
513}
514
515static void btusb_isoc_tx_complete(struct urb *urb)
5e23b923
MH		 516{
517 struct sk_buff *skb = urb->context;
518 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
519
520 BT_DBG("%s urb %p status %d count %d", hdev->name,
521 urb, urb->status, urb->actual_length);
522
523 if (!test_bit(HCI_RUNNING, &hdev->flags))
524 goto done;
525
526 if (!urb->status)
527 hdev->stat.byte_tx += urb->transfer_buffer_length;
528 else
529 hdev->stat.err_tx++;
530
531done:
532 kfree(urb->setup_packet);
533
534 kfree_skb(skb);
535}
536
537static int btusb_open(struct hci_dev *hdev)
538{
539 struct btusb_data *data = hdev->driver_data;
540 int err;
541
542 BT_DBG("%s", hdev->name);
543
7bee549e
ON		 544 err = usb_autopm_get_interface(data->intf);
545 if (err < 0)
546 return err;
547
548 data->intf->needs_remote_wakeup = 1;
549
5e23b923 550 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
7bee549e 551 goto done;
5e23b923
MH		 552
553 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
7bee549e 554 goto done;
5e23b923 555
2eda66f4 556 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
43c2e57f
MH		 557 if (err < 0)
558 goto failed;
559
560 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
5e23b923 561 if (err < 0) {
43c2e57f
MH		 562 usb_kill_anchored_urbs(&data->intr_anchor);
563 goto failed;
5e23b923
MH		 564 }
565
43c2e57f
MH		 566 set_bit(BTUSB_BULK_RUNNING, &data->flags);
567 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
568
7bee549e
ON		 569done:
570 usb_autopm_put_interface(data->intf);
43c2e57f
MH		 571 return 0;
572
573failed:
574 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
575 clear_bit(HCI_RUNNING, &hdev->flags);
7bee549e 576 usb_autopm_put_interface(data->intf);
5e23b923
MH		 577 return err;
578}
579
7bee549e
ON		 580static void btusb_stop_traffic(struct btusb_data *data)
581{
582 usb_kill_anchored_urbs(&data->intr_anchor);
583 usb_kill_anchored_urbs(&data->bulk_anchor);
584 usb_kill_anchored_urbs(&data->isoc_anchor);
585}
586
5e23b923
MH		 587static int btusb_close(struct hci_dev *hdev)
588{
589 struct btusb_data *data = hdev->driver_data;
7bee549e 590 int err;
5e23b923
MH		 591
592 BT_DBG("%s", hdev->name);
593
594 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
595 return 0;
596
e8c3c3d2 597 cancel_work_sync(&data->work);
404291ac 598 cancel_work_sync(&data->waker);
e8c3c3d2 599
9bfa35fe 600 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
5e23b923 601 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
5e23b923 602 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
7bee549e
ON		 603
604 btusb_stop_traffic(data);
605 err = usb_autopm_get_interface(data->intf);
606 if (err < 0)
7b8e2c1d 607 goto failed;
7bee549e
ON		 608
609 data->intf->needs_remote_wakeup = 0;
610 usb_autopm_put_interface(data->intf);
5e23b923 611
7b8e2c1d
ON		 612failed:
613 usb_scuttle_anchored_urbs(&data->deferred);
5e23b923
MH		 614 return 0;
615}
616
617static int btusb_flush(struct hci_dev *hdev)
618{
619 struct btusb_data *data = hdev->driver_data;
620
621 BT_DBG("%s", hdev->name);
622
623 usb_kill_anchored_urbs(&data->tx_anchor);
624
625 return 0;
626}
627
628static int btusb_send_frame(struct sk_buff *skb)
629{
630 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
631 struct btusb_data *data = hdev->driver_data;
632 struct usb_ctrlrequest *dr;
633 struct urb *urb;
634 unsigned int pipe;
635 int err;
636
637 BT_DBG("%s", hdev->name);
638
639 if (!test_bit(HCI_RUNNING, &hdev->flags))
640 return -EBUSY;
641
642 switch (bt_cb(skb)->pkt_type) {
643 case HCI_COMMAND_PKT:
644 urb = usb_alloc_urb(0, GFP_ATOMIC);
645 if (!urb)
646 return -ENOMEM;
647
648 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
649 if (!dr) {
650 usb_free_urb(urb);
651 return -ENOMEM;
652 }
653
7a9d4020 654 dr->bRequestType = data->cmdreq_type;
5e23b923
MH		 655 dr->bRequest = 0;
656 dr->wIndex = 0;
657 dr->wValue = 0;
658 dr->wLength = __cpu_to_le16(skb->len);
659
660 pipe = usb_sndctrlpipe(data->udev, 0x00);
661
662 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
663 skb->data, skb->len, btusb_tx_complete, skb);
664
665 hdev->stat.cmd_tx++;
666 break;
667
668 case HCI_ACLDATA_PKT:
9bfa35fe
MH		 669 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
670 return -ENODEV;
671
5e23b923
MH		 672 urb = usb_alloc_urb(0, GFP_ATOMIC);
673 if (!urb)
674 return -ENOMEM;
675
676 pipe = usb_sndbulkpipe(data->udev,
677 data->bulk_tx_ep->bEndpointAddress);
678
679 usb_fill_bulk_urb(urb, data->udev, pipe,
680 skb->data, skb->len, btusb_tx_complete, skb);
681
682 hdev->stat.acl_tx++;
683 break;
684
685 case HCI_SCODATA_PKT:
9bfa35fe
MH		 686 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
687 return -ENODEV;
688
689 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
690 if (!urb)
691 return -ENOMEM;
692
693 pipe = usb_sndisocpipe(data->udev,
694 data->isoc_tx_ep->bEndpointAddress);
695
696 urb->dev = data->udev;
697 urb->pipe = pipe;
698 urb->context = skb;
7bee549e 699 urb->complete = btusb_isoc_tx_complete;
9bfa35fe
MH		 700 urb->interval = data->isoc_tx_ep->bInterval;
701
702 urb->transfer_flags = URB_ISO_ASAP;
703 urb->transfer_buffer = skb->data;
704 urb->transfer_buffer_length = skb->len;
705
706 __fill_isoc_descriptor(urb, skb->len,
707 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
708
5e23b923 709 hdev->stat.sco_tx++;
7bee549e 710 goto skip_waking;
5e23b923
MH		 711
712 default:
713 return -EILSEQ;
714 }
715
7bee549e
ON		 716 err = inc_tx(data);
717 if (err) {
718 usb_anchor_urb(urb, &data->deferred);
719 schedule_work(&data->waker);
720 err = 0;
721 goto done;
722 }
723
724skip_waking:
5e23b923
MH		 725 usb_anchor_urb(urb, &data->tx_anchor);
726
727 err = usb_submit_urb(urb, GFP_ATOMIC);
728 if (err < 0) {
729 BT_ERR("%s urb %p submission failed", hdev->name, urb);
730 kfree(urb->setup_packet);
731 usb_unanchor_urb(urb);
7bee549e
ON		 732 } else {
733 usb_mark_last_busy(data->udev);
5e23b923
MH		 734 }
735
736 usb_free_urb(urb);
737
7bee549e 738done:
5e23b923
MH		 739 return err;
740}
741
742static void btusb_destruct(struct hci_dev *hdev)
743{
744 struct btusb_data *data = hdev->driver_data;
745
746 BT_DBG("%s", hdev->name);
747
748 kfree(data);
749}
750
751static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
752{
753 struct btusb_data *data = hdev->driver_data;
754
755 BT_DBG("%s evt %d", hdev->name, evt);
756
43c2e57f
MH		 757 if (hdev->conn_hash.sco_num != data->sco_num) {
758 data->sco_num = hdev->conn_hash.sco_num;
759 schedule_work(&data->work);
a780efa8 760 }
5e23b923
MH		 761}
762
9bfa35fe
MH		 763static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
764{
765 struct btusb_data *data = hdev->driver_data;
766 struct usb_interface *intf = data->isoc;
767 struct usb_endpoint_descriptor *ep_desc;
768 int i, err;
769
770 if (!data->isoc)
771 return -ENODEV;
772
773 err = usb_set_interface(data->udev, 1, altsetting);
774 if (err < 0) {
775 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
776 return err;
777 }
778
779 data->isoc_altsetting = altsetting;
780
781 data->isoc_tx_ep = NULL;
782 data->isoc_rx_ep = NULL;
783
784 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
785 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
786
787 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
788 data->isoc_tx_ep = ep_desc;
789 continue;
790 }
791
792 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
793 data->isoc_rx_ep = ep_desc;
794 continue;
795 }
796 }
797
798 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
799 BT_ERR("%s invalid SCO descriptors", hdev->name);
800 return -ENODEV;
801 }
802
803 return 0;
804}
805
5e23b923
MH		 806static void btusb_work(struct work_struct *work)
807{
808 struct btusb_data *data = container_of(work, struct btusb_data, work);
809 struct hci_dev *hdev = data->hdev;
7bee549e 810 int err;
5e23b923 811
9bfa35fe 812 if (hdev->conn_hash.sco_num > 0) {
7bee549e
ON		 813 if (!data->did_iso_resume) {
814 err = usb_autopm_get_interface(data->isoc);
815 if (err < 0) {
816 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
817 usb_kill_anchored_urbs(&data->isoc_anchor);
818 return;
819 }
820
821 data->did_iso_resume = 1;
822 }
9bfa35fe
MH		 823 if (data->isoc_altsetting != 2) {
824 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
825 usb_kill_anchored_urbs(&data->isoc_anchor);
826
827 if (__set_isoc_interface(hdev, 2) < 0)
828 return;
829 }
830
831 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2eda66f4 832 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
9bfa35fe
MH		 833 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
834 else
2eda66f4 835 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
9bfa35fe
MH		 836 }
837 } else {
838 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
839 usb_kill_anchored_urbs(&data->isoc_anchor);
840
841 __set_isoc_interface(hdev, 0);
7bee549e
ON		 842 if (data->did_iso_resume) {
843 data->did_iso_resume = 0;
844 usb_autopm_put_interface(data->isoc);
845 }
5e23b923
MH		 846 }
847}
848
7bee549e
ON		 849static void btusb_waker(struct work_struct *work)
850{
851 struct btusb_data *data = container_of(work, struct btusb_data, waker);
852 int err;
853
854 err = usb_autopm_get_interface(data->intf);
855 if (err < 0)
856 return;
857
858 usb_autopm_put_interface(data->intf);
859}
860
5e23b923
MH		 861static int btusb_probe(struct usb_interface *intf,
862 const struct usb_device_id *id)
863{
864 struct usb_endpoint_descriptor *ep_desc;
865 struct btusb_data *data;
866 struct hci_dev *hdev;
867 int i, err;
868
869 BT_DBG("intf %p id %p", intf, id);
870
cfeb4145 871 /* interface numbers are hardcoded in the spec */
5e23b923
MH		 872 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
873 return -ENODEV;
874
875 if (!id->driver_info) {
876 const struct usb_device_id *match;
877 match = usb_match_id(intf, blacklist_table);
878 if (match)
879 id = match;
880 }
881
cfeb4145
MH		 882 if (id->driver_info == BTUSB_IGNORE)
883 return -ENODEV;
884
885 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
886 return -ENODEV;
887
888 if (ignore_csr && id->driver_info & BTUSB_CSR)
889 return -ENODEV;
890
891 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
892 return -ENODEV;
893
5e23b923
MH		 894 data = kzalloc(sizeof(*data), GFP_KERNEL);
895 if (!data)
896 return -ENOMEM;
897
898 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
899 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
900
901 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
902 data->intr_ep = ep_desc;
903 continue;
904 }
905
906 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
907 data->bulk_tx_ep = ep_desc;
908 continue;
909 }
910
911 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
912 data->bulk_rx_ep = ep_desc;
913 continue;
914 }
915 }
916
917 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
918 kfree(data);
919 return -ENODEV;
920 }
921
7a9d4020
MH		 922 data->cmdreq_type = USB_TYPE_CLASS;
923
5e23b923 924 data->udev = interface_to_usbdev(intf);
5fbcd260 925 data->intf = intf;
5e23b923
MH		 926
927 spin_lock_init(&data->lock);
928
929 INIT_WORK(&data->work, btusb_work);
7bee549e
ON		 930 INIT_WORK(&data->waker, btusb_waker);
931 spin_lock_init(&data->txlock);
5e23b923
MH		 932
933 init_usb_anchor(&data->tx_anchor);
934 init_usb_anchor(&data->intr_anchor);
935 init_usb_anchor(&data->bulk_anchor);
9bfa35fe 936 init_usb_anchor(&data->isoc_anchor);
7bee549e 937 init_usb_anchor(&data->deferred);
5e23b923
MH		 938
939 hdev = hci_alloc_dev();
940 if (!hdev) {
941 kfree(data);
942 return -ENOMEM;
943 }
944
c13854ce 945 hdev->bus = HCI_USB;
5e23b923
MH		 946 hdev->driver_data = data;
947
948 data->hdev = hdev;
949
950 SET_HCIDEV_DEV(hdev, &intf->dev);
951
952 hdev->open = btusb_open;
953 hdev->close = btusb_close;
954 hdev->flush = btusb_flush;
955 hdev->send = btusb_send_frame;
956 hdev->destruct = btusb_destruct;
957 hdev->notify = btusb_notify;
958
959 hdev->owner = THIS_MODULE;
960
7a9d4020 961 /* Interface numbers are hardcoded in the specification */
9bfa35fe
MH		 962 data->isoc = usb_ifnum_to_if(data->udev, 1);
963
7a9d4020
MH		 964 if (!reset)
965 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
cfeb4145
MH		 966
967 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
968 if (!disable_scofix)
969 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
970 }
971
9bfa35fe
MH		 972 if (id->driver_info & BTUSB_BROKEN_ISOC)
973 data->isoc = NULL;
974
7a9d4020
MH		 975 if (id->driver_info & BTUSB_DIGIANSWER) {
976 data->cmdreq_type = USB_TYPE_VENDOR;
977 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
978 }
979
980 if (id->driver_info & BTUSB_CSR) {
981 struct usb_device *udev = data->udev;
982
983 /* Old firmware would otherwise execute USB reset */
984 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
985 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
986 }
987
cfeb4145 988 if (id->driver_info & BTUSB_SNIFFER) {
9bfa35fe 989 struct usb_device *udev = data->udev;
cfeb4145 990
7a9d4020 991 /* New sniffer firmware has crippled HCI interface */
cfeb4145
MH		 992 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
993 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
9bfa35fe
MH		 994
995 data->isoc = NULL;
cfeb4145
MH		 996 }
997
998 if (id->driver_info & BTUSB_BCM92035) {
999 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1000 struct sk_buff *skb;
1001
1002 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1003 if (skb) {
1004 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1005 skb_queue_tail(&hdev->driver_init, skb);
1006 }
1007 }
5e23b923 1008
9bfa35fe
MH		 1009 if (data->isoc) {
1010 err = usb_driver_claim_interface(&btusb_driver,
5fbcd260 1011 data->isoc, data);
9bfa35fe
MH		 1012 if (err < 0) {
1013 hci_free_dev(hdev);
1014 kfree(data);
1015 return err;
1016 }
1017 }
1018
5e23b923
MH		 1019 err = hci_register_dev(hdev);
1020 if (err < 0) {
1021 hci_free_dev(hdev);
1022 kfree(data);
1023 return err;
1024 }
1025
1026 usb_set_intfdata(intf, data);
1027
1028 return 0;
1029}
1030
1031static void btusb_disconnect(struct usb_interface *intf)
1032{
1033 struct btusb_data *data = usb_get_intfdata(intf);
1034 struct hci_dev *hdev;
1035
1036 BT_DBG("intf %p", intf);
1037
1038 if (!data)
1039 return;
1040
1041 hdev = data->hdev;
1042
5fbcd260 1043 __hci_dev_hold(hdev);
9bfa35fe 1044
5fbcd260
MH		 1045 usb_set_intfdata(data->intf, NULL);
1046
1047 if (data->isoc)
1048 usb_set_intfdata(data->isoc, NULL);
5e23b923
MH		 1049
1050 hci_unregister_dev(hdev);
1051
5fbcd260
MH		 1052 if (intf == data->isoc)
1053 usb_driver_release_interface(&btusb_driver, data->intf);
1054 else if (data->isoc)
1055 usb_driver_release_interface(&btusb_driver, data->isoc);
1056
1057 __hci_dev_put(hdev);
1058
5e23b923
MH		 1059 hci_free_dev(hdev);
1060}
1061
7bee549e 1062#ifdef CONFIG_PM
6a88adf2
MH		 1063static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1064{
1065 struct btusb_data *data = usb_get_intfdata(intf);
1066
1067 BT_DBG("intf %p", intf);
1068
1069 if (data->suspend_count++)
1070 return 0;
1071
7bee549e 1072 spin_lock_irq(&data->txlock);
fb34d537 1073 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
7bee549e
ON		 1074 set_bit(BTUSB_SUSPENDING, &data->flags);
1075 spin_unlock_irq(&data->txlock);
1076 } else {
1077 spin_unlock_irq(&data->txlock);
1078 data->suspend_count--;
1079 return -EBUSY;
1080 }
1081
6a88adf2
MH		 1082 cancel_work_sync(&data->work);
1083
7bee549e 1084 btusb_stop_traffic(data);
6a88adf2
MH		 1085 usb_kill_anchored_urbs(&data->tx_anchor);
1086
6a88adf2
MH		 1087 return 0;
1088}
1089
7bee549e
ON		 1090static void play_deferred(struct btusb_data *data)
1091{
1092 struct urb *urb;
1093 int err;
1094
1095 while ((urb = usb_get_from_anchor(&data->deferred))) {
1096 err = usb_submit_urb(urb, GFP_ATOMIC);
1097 if (err < 0)
1098 break;
1099
1100 data->tx_in_flight++;
1101 }
1102 usb_scuttle_anchored_urbs(&data->deferred);
1103}
1104
6a88adf2
MH		 1105static int btusb_resume(struct usb_interface *intf)
1106{
1107 struct btusb_data *data = usb_get_intfdata(intf);
1108 struct hci_dev *hdev = data->hdev;
7bee549e 1109 int err = 0;
6a88adf2
MH		 1110
1111 BT_DBG("intf %p", intf);
1112
1113 if (--data->suspend_count)
1114 return 0;
1115
1116 if (!test_bit(HCI_RUNNING, &hdev->flags))
7bee549e 1117 goto done;
6a88adf2
MH		 1118
1119 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1120 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1121 if (err < 0) {
1122 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
7bee549e 1123 goto failed;
6a88adf2
MH		 1124 }
1125 }
1126
1127 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
43c2e57f
MH		 1128 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1129 if (err < 0) {
6a88adf2 1130 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
7bee549e
ON		 1131 goto failed;
1132 }
1133
1134 btusb_submit_bulk_urb(hdev, GFP_NOIO);
6a88adf2
MH		 1135 }
1136
1137 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1138 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1139 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1140 else
1141 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1142 }
1143
7bee549e
ON		 1144 spin_lock_irq(&data->txlock);
1145 play_deferred(data);
1146 clear_bit(BTUSB_SUSPENDING, &data->flags);
1147 spin_unlock_irq(&data->txlock);
1148 schedule_work(&data->work);
1149
6a88adf2 1150 return 0;
7bee549e
ON		 1151
1152failed:
1153 usb_scuttle_anchored_urbs(&data->deferred);
1154done:
1155 spin_lock_irq(&data->txlock);
1156 clear_bit(BTUSB_SUSPENDING, &data->flags);
1157 spin_unlock_irq(&data->txlock);
1158
1159 return err;
6a88adf2 1160}
7bee549e 1161#endif
6a88adf2 1162
5e23b923
MH		 1163static struct usb_driver btusb_driver = {
1164 .name = "btusb",
1165 .probe = btusb_probe,
1166 .disconnect = btusb_disconnect,
7bee549e 1167#ifdef CONFIG_PM
6a88adf2
MH		 1168 .suspend = btusb_suspend,
1169 .resume = btusb_resume,
7bee549e 1170#endif
5e23b923 1171 .id_table = btusb_table,
7bee549e 1172 .supports_autosuspend = 1,
5e23b923
MH		 1173};
1174
1175static int __init btusb_init(void)
1176{
1177 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1178
1179 return usb_register(&btusb_driver);
1180}
1181
1182static void __exit btusb_exit(void)
1183{
1184 usb_deregister(&btusb_driver);
1185}
1186
1187module_init(btusb_init);
1188module_exit(btusb_exit);
1189
cfeb4145
MH		 1190module_param(ignore_dga, bool, 0644);
1191MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1192
1193module_param(ignore_csr, bool, 0644);
1194MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1195
1196module_param(ignore_sniffer, bool, 0644);
1197MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1198
1199module_param(disable_scofix, bool, 0644);
1200MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1201
1202module_param(force_scofix, bool, 0644);
1203MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1204
1205module_param(reset, bool, 0644);
1206MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1207
5e23b923
MH		 1208MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1209MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1210MODULE_VERSION(VERSION);
1211MODULE_LICENSE("GPL");
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