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Merge branch 'bkl/procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic...
[linux-2.6-block.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
cfeb4145
MH		 62 /* AVM BlueFRITZ! USB v2.0 */
63 { USB_DEVICE(0x057c, 0x3800) },
64
65 /* Bluetooth Ultraport Module from IBM */
66 { USB_DEVICE(0x04bf, 0x030a) },
67
68 /* ALPS Modules with non-standard id */
69 { USB_DEVICE(0x044e, 0x3001) },
70 { USB_DEVICE(0x044e, 0x3002) },
71
72 /* Ericsson with non-standard id */
73 { USB_DEVICE(0x0bdb, 0x1002) },
74
75 /* Canyon CN-BTU1 with HID interfaces */
7a9d4020 76 { USB_DEVICE(0x0c10, 0x0000) },
cfeb4145 77
5e23b923
MH		 78 { } /* Terminating entry */
79};
80
81MODULE_DEVICE_TABLE(usb, btusb_table);
82
83static struct usb_device_id blacklist_table[] = {
cfeb4145
MH		 84 /* CSR BlueCore devices */
85 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
86
87 /* Broadcom BCM2033 without firmware */
88 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
89
90 /* Broadcom BCM2035 */
7a9d4020
MH		 91 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
92 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
93 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
cfeb4145
MH		 94
95 /* Broadcom BCM2045 */
7a9d4020
MH		 96 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
97 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
bdbef3d6 98
cfeb4145 99 /* IBM/Lenovo ThinkPad with Broadcom chip */
7a9d4020
MH		 100 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
101 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145
MH		 102
103 /* HP laptop with Broadcom chip */
7a9d4020 104 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145
MH		 105
106 /* Dell laptop with Broadcom chip */
7a9d4020 107 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 108
5ddd4a60 109 /* Dell Wireless 370 and 410 devices */
7a9d4020 110 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
5ddd4a60 111 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 112
7a9d4020
MH		 113 /* Belkin F8T012 and F8T013 devices */
114 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
115 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 116
5ddd4a60
MH		 117 /* Asus WL-BTD202 device */
118 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
119
120 /* Kensington Bluetooth USB adapter */
121 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
122
cfeb4145
MH		 123 /* RTX Telecom based adapters with buggy SCO support */
124 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
125 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
126
127 /* CONWISE Technology based adapters with buggy SCO support */
128 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
129
cfeb4145
MH		 130 /* Digianswer devices */
131 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
132 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
133
134 /* CSR BlueCore Bluetooth Sniffer */
135 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
136
137 /* Frontline ComProbe Bluetooth Sniffer */
138 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
139
5e23b923
MH		 140 { } /* Terminating entry */
141};
142
9bfa35fe
MH		 143#define BTUSB_MAX_ISOC_FRAMES 10
144
5e23b923
MH		 145#define BTUSB_INTR_RUNNING 0
146#define BTUSB_BULK_RUNNING 1
9bfa35fe 147#define BTUSB_ISOC_RUNNING 2
7bee549e 148#define BTUSB_SUSPENDING 3
5e23b923
MH		 149
150struct btusb_data {
151 struct hci_dev *hdev;
152 struct usb_device *udev;
5fbcd260 153 struct usb_interface *intf;
9bfa35fe 154 struct usb_interface *isoc;
5e23b923
MH		 155
156 spinlock_t lock;
157
158 unsigned long flags;
159
160 struct work_struct work;
7bee549e 161 struct work_struct waker;
5e23b923
MH		 162
163 struct usb_anchor tx_anchor;
164 struct usb_anchor intr_anchor;
165 struct usb_anchor bulk_anchor;
9bfa35fe 166 struct usb_anchor isoc_anchor;
7bee549e
ON		 167 struct usb_anchor deferred;
168 int tx_in_flight;
169 spinlock_t txlock;
5e23b923
MH		 170
171 struct usb_endpoint_descriptor *intr_ep;
172 struct usb_endpoint_descriptor *bulk_tx_ep;
173 struct usb_endpoint_descriptor *bulk_rx_ep;
9bfa35fe
MH		 174 struct usb_endpoint_descriptor *isoc_tx_ep;
175 struct usb_endpoint_descriptor *isoc_rx_ep;
176
7a9d4020
MH		 177 __u8 cmdreq_type;
178
43c2e57f 179 unsigned int sco_num;
9bfa35fe 180 int isoc_altsetting;
6a88adf2 181 int suspend_count;
7bee549e 182 int did_iso_resume:1;
5e23b923
MH		 183};
184
7bee549e
ON		 185static int inc_tx(struct btusb_data *data)
186{
187 unsigned long flags;
188 int rv;
189
190 spin_lock_irqsave(&data->txlock, flags);
191 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
192 if (!rv)
193 data->tx_in_flight++;
194 spin_unlock_irqrestore(&data->txlock, flags);
195
196 return rv;
197}
198
5e23b923
MH		 199static void btusb_intr_complete(struct urb *urb)
200{
201 struct hci_dev *hdev = urb->context;
202 struct btusb_data *data = hdev->driver_data;
203 int err;
204
205 BT_DBG("%s urb %p status %d count %d", hdev->name,
206 urb, urb->status, urb->actual_length);
207
208 if (!test_bit(HCI_RUNNING, &hdev->flags))
209 return;
210
211 if (urb->status == 0) {
9bfa35fe
MH		 212 hdev->stat.byte_rx += urb->actual_length;
213
5e23b923
MH		 214 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
215 urb->transfer_buffer,
216 urb->actual_length) < 0) {
217 BT_ERR("%s corrupted event packet", hdev->name);
218 hdev->stat.err_rx++;
219 }
220 }
221
222 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
223 return;
224
7bee549e 225 usb_mark_last_busy(data->udev);
5e23b923
MH		 226 usb_anchor_urb(urb, &data->intr_anchor);
227
228 err = usb_submit_urb(urb, GFP_ATOMIC);
229 if (err < 0) {
230 BT_ERR("%s urb %p failed to resubmit (%d)",
231 hdev->name, urb, -err);
232 usb_unanchor_urb(urb);
233 }
234}
235
2eda66f4 236static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
5e23b923
MH		 237{
238 struct btusb_data *data = hdev->driver_data;
239 struct urb *urb;
240 unsigned char *buf;
241 unsigned int pipe;
242 int err, size;
243
244 BT_DBG("%s", hdev->name);
245
9bfa35fe
MH		 246 if (!data->intr_ep)
247 return -ENODEV;
248
2eda66f4 249 urb = usb_alloc_urb(0, mem_flags);
5e23b923
MH		 250 if (!urb)
251 return -ENOMEM;
252
253 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
254
2eda66f4 255 buf = kmalloc(size, mem_flags);
5e23b923
MH		 256 if (!buf) {
257 usb_free_urb(urb);
258 return -ENOMEM;
259 }
260
261 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
262
263 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
264 btusb_intr_complete, hdev,
265 data->intr_ep->bInterval);
266
267 urb->transfer_flags |= URB_FREE_BUFFER;
268
269 usb_anchor_urb(urb, &data->intr_anchor);
270
2eda66f4 271 err = usb_submit_urb(urb, mem_flags);
5e23b923
MH		 272 if (err < 0) {
273 BT_ERR("%s urb %p submission failed (%d)",
274 hdev->name, urb, -err);
275 usb_unanchor_urb(urb);
5e23b923
MH		 276 }
277
278 usb_free_urb(urb);
279
280 return err;
281}
282
283static void btusb_bulk_complete(struct urb *urb)
284{
285 struct hci_dev *hdev = urb->context;
286 struct btusb_data *data = hdev->driver_data;
287 int err;
288
289 BT_DBG("%s urb %p status %d count %d", hdev->name,
290 urb, urb->status, urb->actual_length);
291
292 if (!test_bit(HCI_RUNNING, &hdev->flags))
293 return;
294
295 if (urb->status == 0) {
9bfa35fe
MH		 296 hdev->stat.byte_rx += urb->actual_length;
297
5e23b923
MH		 298 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
299 urb->transfer_buffer,
300 urb->actual_length) < 0) {
301 BT_ERR("%s corrupted ACL packet", hdev->name);
302 hdev->stat.err_rx++;
303 }
304 }
305
306 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
307 return;
308
309 usb_anchor_urb(urb, &data->bulk_anchor);
652fd781 310 usb_mark_last_busy(data->udev);
5e23b923
MH		 311
312 err = usb_submit_urb(urb, GFP_ATOMIC);
313 if (err < 0) {
314 BT_ERR("%s urb %p failed to resubmit (%d)",
315 hdev->name, urb, -err);
316 usb_unanchor_urb(urb);
317 }
318}
319
2eda66f4 320static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
5e23b923
MH		 321{
322 struct btusb_data *data = hdev->driver_data;
323 struct urb *urb;
324 unsigned char *buf;
325 unsigned int pipe;
290ba200 326 int err, size = HCI_MAX_FRAME_SIZE;
5e23b923
MH		 327
328 BT_DBG("%s", hdev->name);
329
9bfa35fe
MH		 330 if (!data->bulk_rx_ep)
331 return -ENODEV;
332
2eda66f4 333 urb = usb_alloc_urb(0, mem_flags);
5e23b923
MH		 334 if (!urb)
335 return -ENOMEM;
336
2eda66f4 337 buf = kmalloc(size, mem_flags);
5e23b923
MH		 338 if (!buf) {
339 usb_free_urb(urb);
340 return -ENOMEM;
341 }
342
343 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
344
345 usb_fill_bulk_urb(urb, data->udev, pipe,
346 buf, size, btusb_bulk_complete, hdev);
347
348 urb->transfer_flags |= URB_FREE_BUFFER;
349
7bee549e 350 usb_mark_last_busy(data->udev);
5e23b923
MH		 351 usb_anchor_urb(urb, &data->bulk_anchor);
352
2eda66f4 353 err = usb_submit_urb(urb, mem_flags);
5e23b923
MH		 354 if (err < 0) {
355 BT_ERR("%s urb %p submission failed (%d)",
356 hdev->name, urb, -err);
357 usb_unanchor_urb(urb);
5e23b923
MH		 358 }
359
360 usb_free_urb(urb);
361
362 return err;
363}
364
9bfa35fe
MH		 365static void btusb_isoc_complete(struct urb *urb)
366{
367 struct hci_dev *hdev = urb->context;
368 struct btusb_data *data = hdev->driver_data;
369 int i, err;
370
371 BT_DBG("%s urb %p status %d count %d", hdev->name,
372 urb, urb->status, urb->actual_length);
373
374 if (!test_bit(HCI_RUNNING, &hdev->flags))
375 return;
376
377 if (urb->status == 0) {
378 for (i = 0; i < urb->number_of_packets; i++) {
379 unsigned int offset = urb->iso_frame_desc[i].offset;
380 unsigned int length = urb->iso_frame_desc[i].actual_length;
381
382 if (urb->iso_frame_desc[i].status)
383 continue;
384
385 hdev->stat.byte_rx += length;
386
387 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
388 urb->transfer_buffer + offset,
389 length) < 0) {
390 BT_ERR("%s corrupted SCO packet", hdev->name);
391 hdev->stat.err_rx++;
392 }
393 }
394 }
395
396 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
397 return;
398
399 usb_anchor_urb(urb, &data->isoc_anchor);
400
401 err = usb_submit_urb(urb, GFP_ATOMIC);
402 if (err < 0) {
403 BT_ERR("%s urb %p failed to resubmit (%d)",
404 hdev->name, urb, -err);
405 usb_unanchor_urb(urb);
406 }
407}
408
409static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
410{
411 int i, offset = 0;
412
413 BT_DBG("len %d mtu %d", len, mtu);
414
415 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
416 i++, offset += mtu, len -= mtu) {
417 urb->iso_frame_desc[i].offset = offset;
418 urb->iso_frame_desc[i].length = mtu;
419 }
420
421 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
422 urb->iso_frame_desc[i].offset = offset;
423 urb->iso_frame_desc[i].length = len;
424 i++;
425 }
426
427 urb->number_of_packets = i;
428}
429
2eda66f4 430static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
9bfa35fe
MH		 431{
432 struct btusb_data *data = hdev->driver_data;
433 struct urb *urb;
434 unsigned char *buf;
435 unsigned int pipe;
436 int err, size;
437
438 BT_DBG("%s", hdev->name);
439
440 if (!data->isoc_rx_ep)
441 return -ENODEV;
442
2eda66f4 443 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
9bfa35fe
MH		 444 if (!urb)
445 return -ENOMEM;
446
447 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
448 BTUSB_MAX_ISOC_FRAMES;
449
2eda66f4 450 buf = kmalloc(size, mem_flags);
9bfa35fe
MH		 451 if (!buf) {
452 usb_free_urb(urb);
453 return -ENOMEM;
454 }
455
456 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
457
458 urb->dev = data->udev;
459 urb->pipe = pipe;
460 urb->context = hdev;
461 urb->complete = btusb_isoc_complete;
462 urb->interval = data->isoc_rx_ep->bInterval;
463
464 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
465 urb->transfer_buffer = buf;
466 urb->transfer_buffer_length = size;
467
468 __fill_isoc_descriptor(urb, size,
469 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
470
471 usb_anchor_urb(urb, &data->isoc_anchor);
472
2eda66f4 473 err = usb_submit_urb(urb, mem_flags);
9bfa35fe
MH		 474 if (err < 0) {
475 BT_ERR("%s urb %p submission failed (%d)",
476 hdev->name, urb, -err);
477 usb_unanchor_urb(urb);
9bfa35fe
MH		 478 }
479
480 usb_free_urb(urb);
481
482 return err;
483}
484
5e23b923 485static void btusb_tx_complete(struct urb *urb)
7bee549e
ON		 486{
487 struct sk_buff *skb = urb->context;
488 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
489 struct btusb_data *data = hdev->driver_data;
490
491 BT_DBG("%s urb %p status %d count %d", hdev->name,
492 urb, urb->status, urb->actual_length);
493
494 if (!test_bit(HCI_RUNNING, &hdev->flags))
495 goto done;
496
497 if (!urb->status)
498 hdev->stat.byte_tx += urb->transfer_buffer_length;
499 else
500 hdev->stat.err_tx++;
501
502done:
503 spin_lock(&data->txlock);
504 data->tx_in_flight--;
505 spin_unlock(&data->txlock);
506
507 kfree(urb->setup_packet);
508
509 kfree_skb(skb);
510}
511
512static void btusb_isoc_tx_complete(struct urb *urb)
5e23b923
MH		 513{
514 struct sk_buff *skb = urb->context;
515 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
516
517 BT_DBG("%s urb %p status %d count %d", hdev->name,
518 urb, urb->status, urb->actual_length);
519
520 if (!test_bit(HCI_RUNNING, &hdev->flags))
521 goto done;
522
523 if (!urb->status)
524 hdev->stat.byte_tx += urb->transfer_buffer_length;
525 else
526 hdev->stat.err_tx++;
527
528done:
529 kfree(urb->setup_packet);
530
531 kfree_skb(skb);
532}
533
534static int btusb_open(struct hci_dev *hdev)
535{
536 struct btusb_data *data = hdev->driver_data;
537 int err;
538
539 BT_DBG("%s", hdev->name);
540
7bee549e
ON		 541 err = usb_autopm_get_interface(data->intf);
542 if (err < 0)
543 return err;
544
545 data->intf->needs_remote_wakeup = 1;
546
5e23b923 547 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
7bee549e 548 goto done;
5e23b923
MH		 549
550 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
7bee549e 551 goto done;
5e23b923 552
2eda66f4 553 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
43c2e57f
MH		 554 if (err < 0)
555 goto failed;
556
557 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
5e23b923 558 if (err < 0) {
43c2e57f
MH		 559 usb_kill_anchored_urbs(&data->intr_anchor);
560 goto failed;
5e23b923
MH		 561 }
562
43c2e57f
MH		 563 set_bit(BTUSB_BULK_RUNNING, &data->flags);
564 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
565
7bee549e
ON		 566done:
567 usb_autopm_put_interface(data->intf);
43c2e57f
MH		 568 return 0;
569
570failed:
571 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
572 clear_bit(HCI_RUNNING, &hdev->flags);
7bee549e 573 usb_autopm_put_interface(data->intf);
5e23b923
MH		 574 return err;
575}
576
7bee549e
ON		 577static void btusb_stop_traffic(struct btusb_data *data)
578{
579 usb_kill_anchored_urbs(&data->intr_anchor);
580 usb_kill_anchored_urbs(&data->bulk_anchor);
581 usb_kill_anchored_urbs(&data->isoc_anchor);
582}
583
5e23b923
MH		 584static int btusb_close(struct hci_dev *hdev)
585{
586 struct btusb_data *data = hdev->driver_data;
7bee549e 587 int err;
5e23b923
MH		 588
589 BT_DBG("%s", hdev->name);
590
591 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
592 return 0;
593
e8c3c3d2 594 cancel_work_sync(&data->work);
404291ac 595 cancel_work_sync(&data->waker);
e8c3c3d2 596
9bfa35fe 597 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
5e23b923 598 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
5e23b923 599 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
7bee549e
ON		 600
601 btusb_stop_traffic(data);
602 err = usb_autopm_get_interface(data->intf);
603 if (err < 0)
7b8e2c1d 604 goto failed;
7bee549e
ON		 605
606 data->intf->needs_remote_wakeup = 0;
607 usb_autopm_put_interface(data->intf);
5e23b923 608
7b8e2c1d
ON		 609failed:
610 usb_scuttle_anchored_urbs(&data->deferred);
5e23b923
MH		 611 return 0;
612}
613
614static int btusb_flush(struct hci_dev *hdev)
615{
616 struct btusb_data *data = hdev->driver_data;
617
618 BT_DBG("%s", hdev->name);
619
620 usb_kill_anchored_urbs(&data->tx_anchor);
621
622 return 0;
623}
624
625static int btusb_send_frame(struct sk_buff *skb)
626{
627 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
628 struct btusb_data *data = hdev->driver_data;
629 struct usb_ctrlrequest *dr;
630 struct urb *urb;
631 unsigned int pipe;
632 int err;
633
634 BT_DBG("%s", hdev->name);
635
636 if (!test_bit(HCI_RUNNING, &hdev->flags))
637 return -EBUSY;
638
639 switch (bt_cb(skb)->pkt_type) {
640 case HCI_COMMAND_PKT:
641 urb = usb_alloc_urb(0, GFP_ATOMIC);
642 if (!urb)
643 return -ENOMEM;
644
645 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
646 if (!dr) {
647 usb_free_urb(urb);
648 return -ENOMEM;
649 }
650
7a9d4020 651 dr->bRequestType = data->cmdreq_type;
5e23b923
MH		 652 dr->bRequest = 0;
653 dr->wIndex = 0;
654 dr->wValue = 0;
655 dr->wLength = __cpu_to_le16(skb->len);
656
657 pipe = usb_sndctrlpipe(data->udev, 0x00);
658
659 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
660 skb->data, skb->len, btusb_tx_complete, skb);
661
662 hdev->stat.cmd_tx++;
663 break;
664
665 case HCI_ACLDATA_PKT:
9bfa35fe
MH		 666 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
667 return -ENODEV;
668
5e23b923
MH		 669 urb = usb_alloc_urb(0, GFP_ATOMIC);
670 if (!urb)
671 return -ENOMEM;
672
673 pipe = usb_sndbulkpipe(data->udev,
674 data->bulk_tx_ep->bEndpointAddress);
675
676 usb_fill_bulk_urb(urb, data->udev, pipe,
677 skb->data, skb->len, btusb_tx_complete, skb);
678
679 hdev->stat.acl_tx++;
680 break;
681
682 case HCI_SCODATA_PKT:
9bfa35fe
MH		 683 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
684 return -ENODEV;
685
686 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
687 if (!urb)
688 return -ENOMEM;
689
690 pipe = usb_sndisocpipe(data->udev,
691 data->isoc_tx_ep->bEndpointAddress);
692
693 urb->dev = data->udev;
694 urb->pipe = pipe;
695 urb->context = skb;
7bee549e 696 urb->complete = btusb_isoc_tx_complete;
9bfa35fe
MH		 697 urb->interval = data->isoc_tx_ep->bInterval;
698
699 urb->transfer_flags = URB_ISO_ASAP;
700 urb->transfer_buffer = skb->data;
701 urb->transfer_buffer_length = skb->len;
702
703 __fill_isoc_descriptor(urb, skb->len,
704 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
705
5e23b923 706 hdev->stat.sco_tx++;
7bee549e 707 goto skip_waking;
5e23b923
MH		 708
709 default:
710 return -EILSEQ;
711 }
712
7bee549e
ON		 713 err = inc_tx(data);
714 if (err) {
715 usb_anchor_urb(urb, &data->deferred);
716 schedule_work(&data->waker);
717 err = 0;
718 goto done;
719 }
720
721skip_waking:
5e23b923
MH		 722 usb_anchor_urb(urb, &data->tx_anchor);
723
724 err = usb_submit_urb(urb, GFP_ATOMIC);
725 if (err < 0) {
726 BT_ERR("%s urb %p submission failed", hdev->name, urb);
727 kfree(urb->setup_packet);
728 usb_unanchor_urb(urb);
7bee549e
ON		 729 } else {
730 usb_mark_last_busy(data->udev);
5e23b923
MH		 731 }
732
733 usb_free_urb(urb);
734
7bee549e 735done:
5e23b923
MH		 736 return err;
737}
738
739static void btusb_destruct(struct hci_dev *hdev)
740{
741 struct btusb_data *data = hdev->driver_data;
742
743 BT_DBG("%s", hdev->name);
744
745 kfree(data);
746}
747
748static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
749{
750 struct btusb_data *data = hdev->driver_data;
751
752 BT_DBG("%s evt %d", hdev->name, evt);
753
43c2e57f
MH		 754 if (hdev->conn_hash.sco_num != data->sco_num) {
755 data->sco_num = hdev->conn_hash.sco_num;
756 schedule_work(&data->work);
a780efa8 757 }
5e23b923
MH		 758}
759
9bfa35fe
MH		 760static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
761{
762 struct btusb_data *data = hdev->driver_data;
763 struct usb_interface *intf = data->isoc;
764 struct usb_endpoint_descriptor *ep_desc;
765 int i, err;
766
767 if (!data->isoc)
768 return -ENODEV;
769
770 err = usb_set_interface(data->udev, 1, altsetting);
771 if (err < 0) {
772 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
773 return err;
774 }
775
776 data->isoc_altsetting = altsetting;
777
778 data->isoc_tx_ep = NULL;
779 data->isoc_rx_ep = NULL;
780
781 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
782 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
783
784 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
785 data->isoc_tx_ep = ep_desc;
786 continue;
787 }
788
789 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
790 data->isoc_rx_ep = ep_desc;
791 continue;
792 }
793 }
794
795 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
796 BT_ERR("%s invalid SCO descriptors", hdev->name);
797 return -ENODEV;
798 }
799
800 return 0;
801}
802
5e23b923
MH		 803static void btusb_work(struct work_struct *work)
804{
805 struct btusb_data *data = container_of(work, struct btusb_data, work);
806 struct hci_dev *hdev = data->hdev;
7bee549e 807 int err;
5e23b923 808
9bfa35fe 809 if (hdev->conn_hash.sco_num > 0) {
7bee549e
ON		 810 if (!data->did_iso_resume) {
811 err = usb_autopm_get_interface(data->isoc);
812 if (err < 0) {
813 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
814 usb_kill_anchored_urbs(&data->isoc_anchor);
815 return;
816 }
817
818 data->did_iso_resume = 1;
819 }
9bfa35fe
MH		 820 if (data->isoc_altsetting != 2) {
821 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
822 usb_kill_anchored_urbs(&data->isoc_anchor);
823
824 if (__set_isoc_interface(hdev, 2) < 0)
825 return;
826 }
827
828 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2eda66f4 829 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
9bfa35fe
MH		 830 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
831 else
2eda66f4 832 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
9bfa35fe
MH		 833 }
834 } else {
835 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
836 usb_kill_anchored_urbs(&data->isoc_anchor);
837
838 __set_isoc_interface(hdev, 0);
7bee549e
ON		 839 if (data->did_iso_resume) {
840 data->did_iso_resume = 0;
841 usb_autopm_put_interface(data->isoc);
842 }
5e23b923
MH		 843 }
844}
845
7bee549e
ON		 846static void btusb_waker(struct work_struct *work)
847{
848 struct btusb_data *data = container_of(work, struct btusb_data, waker);
849 int err;
850
851 err = usb_autopm_get_interface(data->intf);
852 if (err < 0)
853 return;
854
855 usb_autopm_put_interface(data->intf);
856}
857
5e23b923
MH		 858static int btusb_probe(struct usb_interface *intf,
859 const struct usb_device_id *id)
860{
861 struct usb_endpoint_descriptor *ep_desc;
862 struct btusb_data *data;
863 struct hci_dev *hdev;
864 int i, err;
865
866 BT_DBG("intf %p id %p", intf, id);
867
cfeb4145 868 /* interface numbers are hardcoded in the spec */
5e23b923
MH		 869 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
870 return -ENODEV;
871
872 if (!id->driver_info) {
873 const struct usb_device_id *match;
874 match = usb_match_id(intf, blacklist_table);
875 if (match)
876 id = match;
877 }
878
cfeb4145
MH		 879 if (id->driver_info == BTUSB_IGNORE)
880 return -ENODEV;
881
882 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
883 return -ENODEV;
884
885 if (ignore_csr && id->driver_info & BTUSB_CSR)
886 return -ENODEV;
887
888 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
889 return -ENODEV;
890
5e23b923
MH		 891 data = kzalloc(sizeof(*data), GFP_KERNEL);
892 if (!data)
893 return -ENOMEM;
894
895 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
896 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
897
898 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
899 data->intr_ep = ep_desc;
900 continue;
901 }
902
903 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
904 data->bulk_tx_ep = ep_desc;
905 continue;
906 }
907
908 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
909 data->bulk_rx_ep = ep_desc;
910 continue;
911 }
912 }
913
914 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
915 kfree(data);
916 return -ENODEV;
917 }
918
7a9d4020
MH		 919 data->cmdreq_type = USB_TYPE_CLASS;
920
5e23b923 921 data->udev = interface_to_usbdev(intf);
5fbcd260 922 data->intf = intf;
5e23b923
MH		 923
924 spin_lock_init(&data->lock);
925
926 INIT_WORK(&data->work, btusb_work);
7bee549e
ON		 927 INIT_WORK(&data->waker, btusb_waker);
928 spin_lock_init(&data->txlock);
5e23b923
MH		 929
930 init_usb_anchor(&data->tx_anchor);
931 init_usb_anchor(&data->intr_anchor);
932 init_usb_anchor(&data->bulk_anchor);
9bfa35fe 933 init_usb_anchor(&data->isoc_anchor);
7bee549e 934 init_usb_anchor(&data->deferred);
5e23b923
MH		 935
936 hdev = hci_alloc_dev();
937 if (!hdev) {
938 kfree(data);
939 return -ENOMEM;
940 }
941
c13854ce 942 hdev->bus = HCI_USB;
5e23b923
MH		 943 hdev->driver_data = data;
944
945 data->hdev = hdev;
946
947 SET_HCIDEV_DEV(hdev, &intf->dev);
948
949 hdev->open = btusb_open;
950 hdev->close = btusb_close;
951 hdev->flush = btusb_flush;
952 hdev->send = btusb_send_frame;
953 hdev->destruct = btusb_destruct;
954 hdev->notify = btusb_notify;
955
956 hdev->owner = THIS_MODULE;
957
7a9d4020 958 /* Interface numbers are hardcoded in the specification */
9bfa35fe
MH		 959 data->isoc = usb_ifnum_to_if(data->udev, 1);
960
7a9d4020
MH		 961 if (!reset)
962 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
cfeb4145
MH		 963
964 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
965 if (!disable_scofix)
966 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
967 }
968
9bfa35fe
MH		 969 if (id->driver_info & BTUSB_BROKEN_ISOC)
970 data->isoc = NULL;
971
7a9d4020
MH		 972 if (id->driver_info & BTUSB_DIGIANSWER) {
973 data->cmdreq_type = USB_TYPE_VENDOR;
974 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
975 }
976
977 if (id->driver_info & BTUSB_CSR) {
978 struct usb_device *udev = data->udev;
979
980 /* Old firmware would otherwise execute USB reset */
981 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
982 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
983 }
984
cfeb4145 985 if (id->driver_info & BTUSB_SNIFFER) {
9bfa35fe 986 struct usb_device *udev = data->udev;
cfeb4145 987
7a9d4020 988 /* New sniffer firmware has crippled HCI interface */
cfeb4145
MH		 989 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
990 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
9bfa35fe
MH		 991
992 data->isoc = NULL;
cfeb4145
MH		 993 }
994
995 if (id->driver_info & BTUSB_BCM92035) {
996 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
997 struct sk_buff *skb;
998
999 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1000 if (skb) {
1001 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1002 skb_queue_tail(&hdev->driver_init, skb);
1003 }
1004 }
5e23b923 1005
9bfa35fe
MH		 1006 if (data->isoc) {
1007 err = usb_driver_claim_interface(&btusb_driver,
5fbcd260 1008 data->isoc, data);
9bfa35fe
MH		 1009 if (err < 0) {
1010 hci_free_dev(hdev);
1011 kfree(data);
1012 return err;
1013 }
1014 }
1015
5e23b923
MH		 1016 err = hci_register_dev(hdev);
1017 if (err < 0) {
1018 hci_free_dev(hdev);
1019 kfree(data);
1020 return err;
1021 }
1022
1023 usb_set_intfdata(intf, data);
1024
1025 return 0;
1026}
1027
1028static void btusb_disconnect(struct usb_interface *intf)
1029{
1030 struct btusb_data *data = usb_get_intfdata(intf);
1031 struct hci_dev *hdev;
1032
1033 BT_DBG("intf %p", intf);
1034
1035 if (!data)
1036 return;
1037
1038 hdev = data->hdev;
1039
5fbcd260 1040 __hci_dev_hold(hdev);
9bfa35fe 1041
5fbcd260
MH		 1042 usb_set_intfdata(data->intf, NULL);
1043
1044 if (data->isoc)
1045 usb_set_intfdata(data->isoc, NULL);
5e23b923
MH		 1046
1047 hci_unregister_dev(hdev);
1048
5fbcd260
MH		 1049 if (intf == data->isoc)
1050 usb_driver_release_interface(&btusb_driver, data->intf);
1051 else if (data->isoc)
1052 usb_driver_release_interface(&btusb_driver, data->isoc);
1053
1054 __hci_dev_put(hdev);
1055
5e23b923
MH		 1056 hci_free_dev(hdev);
1057}
1058
7bee549e 1059#ifdef CONFIG_PM
6a88adf2
MH		 1060static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1061{
1062 struct btusb_data *data = usb_get_intfdata(intf);
1063
1064 BT_DBG("intf %p", intf);
1065
1066 if (data->suspend_count++)
1067 return 0;
1068
7bee549e 1069 spin_lock_irq(&data->txlock);
fb34d537 1070 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
7bee549e
ON		 1071 set_bit(BTUSB_SUSPENDING, &data->flags);
1072 spin_unlock_irq(&data->txlock);
1073 } else {
1074 spin_unlock_irq(&data->txlock);
1075 data->suspend_count--;
1076 return -EBUSY;
1077 }
1078
6a88adf2
MH		 1079 cancel_work_sync(&data->work);
1080
7bee549e 1081 btusb_stop_traffic(data);
6a88adf2
MH		 1082 usb_kill_anchored_urbs(&data->tx_anchor);
1083
6a88adf2
MH		 1084 return 0;
1085}
1086
7bee549e
ON		 1087static void play_deferred(struct btusb_data *data)
1088{
1089 struct urb *urb;
1090 int err;
1091
1092 while ((urb = usb_get_from_anchor(&data->deferred))) {
1093 err = usb_submit_urb(urb, GFP_ATOMIC);
1094 if (err < 0)
1095 break;
1096
1097 data->tx_in_flight++;
1098 }
1099 usb_scuttle_anchored_urbs(&data->deferred);
1100}
1101
6a88adf2
MH		 1102static int btusb_resume(struct usb_interface *intf)
1103{
1104 struct btusb_data *data = usb_get_intfdata(intf);
1105 struct hci_dev *hdev = data->hdev;
7bee549e 1106 int err = 0;
6a88adf2
MH		 1107
1108 BT_DBG("intf %p", intf);
1109
1110 if (--data->suspend_count)
1111 return 0;
1112
1113 if (!test_bit(HCI_RUNNING, &hdev->flags))
7bee549e 1114 goto done;
6a88adf2
MH		 1115
1116 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1117 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1118 if (err < 0) {
1119 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
7bee549e 1120 goto failed;
6a88adf2
MH		 1121 }
1122 }
1123
1124 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
43c2e57f
MH		 1125 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1126 if (err < 0) {
6a88adf2 1127 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
7bee549e
ON		 1128 goto failed;
1129 }
1130
1131 btusb_submit_bulk_urb(hdev, GFP_NOIO);
6a88adf2
MH		 1132 }
1133
1134 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1135 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1136 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1137 else
1138 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1139 }
1140
7bee549e
ON		 1141 spin_lock_irq(&data->txlock);
1142 play_deferred(data);
1143 clear_bit(BTUSB_SUSPENDING, &data->flags);
1144 spin_unlock_irq(&data->txlock);
1145 schedule_work(&data->work);
1146
6a88adf2 1147 return 0;
7bee549e
ON		 1148
1149failed:
1150 usb_scuttle_anchored_urbs(&data->deferred);
1151done:
1152 spin_lock_irq(&data->txlock);
1153 clear_bit(BTUSB_SUSPENDING, &data->flags);
1154 spin_unlock_irq(&data->txlock);
1155
1156 return err;
6a88adf2 1157}
7bee549e 1158#endif
6a88adf2 1159
5e23b923
MH		 1160static struct usb_driver btusb_driver = {
1161 .name = "btusb",
1162 .probe = btusb_probe,
1163 .disconnect = btusb_disconnect,
7bee549e 1164#ifdef CONFIG_PM
6a88adf2
MH		 1165 .suspend = btusb_suspend,
1166 .resume = btusb_resume,
7bee549e 1167#endif
5e23b923 1168 .id_table = btusb_table,
7bee549e 1169 .supports_autosuspend = 1,
5e23b923
MH		 1170};
1171
1172static int __init btusb_init(void)
1173{
1174 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1175
1176 return usb_register(&btusb_driver);
1177}
1178
1179static void __exit btusb_exit(void)
1180{
1181 usb_deregister(&btusb_driver);
1182}
1183
1184module_init(btusb_init);
1185module_exit(btusb_exit);
1186
cfeb4145
MH		 1187module_param(ignore_dga, bool, 0644);
1188MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1189
1190module_param(ignore_csr, bool, 0644);
1191MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1192
1193module_param(ignore_sniffer, bool, 0644);
1194MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1195
1196module_param(disable_scofix, bool, 0644);
1197MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1198
1199module_param(force_scofix, bool, 0644);
1200MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1201
1202module_param(reset, bool, 0644);
1203MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1204
5e23b923
MH		 1205MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1206MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1207MODULE_VERSION(VERSION);
1208MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)