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Bluetooth: When encryption is dropped, do not send RFCOMM packets
[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
7a9d4020 38#define VERSION "0.4"
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
5e23b923
MH		 148
149struct btusb_data {
150 struct hci_dev *hdev;
151 struct usb_device *udev;
5fbcd260 152 struct usb_interface *intf;
9bfa35fe 153 struct usb_interface *isoc;
5e23b923
MH		 154
155 spinlock_t lock;
156
157 unsigned long flags;
158
159 struct work_struct work;
160
161 struct usb_anchor tx_anchor;
162 struct usb_anchor intr_anchor;
163 struct usb_anchor bulk_anchor;
9bfa35fe 164 struct usb_anchor isoc_anchor;
5e23b923
MH		 165
166 struct usb_endpoint_descriptor *intr_ep;
167 struct usb_endpoint_descriptor *bulk_tx_ep;
168 struct usb_endpoint_descriptor *bulk_rx_ep;
9bfa35fe
MH		 169 struct usb_endpoint_descriptor *isoc_tx_ep;
170 struct usb_endpoint_descriptor *isoc_rx_ep;
171
7a9d4020
MH		 172 __u8 cmdreq_type;
173
9bfa35fe 174 int isoc_altsetting;
6a88adf2 175 int suspend_count;
5e23b923
MH		 176};
177
178static void btusb_intr_complete(struct urb *urb)
179{
180 struct hci_dev *hdev = urb->context;
181 struct btusb_data *data = hdev->driver_data;
182 int err;
183
184 BT_DBG("%s urb %p status %d count %d", hdev->name,
185 urb, urb->status, urb->actual_length);
186
187 if (!test_bit(HCI_RUNNING, &hdev->flags))
188 return;
189
190 if (urb->status == 0) {
9bfa35fe
MH		 191 hdev->stat.byte_rx += urb->actual_length;
192
5e23b923
MH		 193 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
194 urb->transfer_buffer,
195 urb->actual_length) < 0) {
196 BT_ERR("%s corrupted event packet", hdev->name);
197 hdev->stat.err_rx++;
198 }
199 }
200
201 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
202 return;
203
204 usb_anchor_urb(urb, &data->intr_anchor);
205
206 err = usb_submit_urb(urb, GFP_ATOMIC);
207 if (err < 0) {
208 BT_ERR("%s urb %p failed to resubmit (%d)",
209 hdev->name, urb, -err);
210 usb_unanchor_urb(urb);
211 }
212}
213
2eda66f4 214static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
5e23b923
MH		 215{
216 struct btusb_data *data = hdev->driver_data;
217 struct urb *urb;
218 unsigned char *buf;
219 unsigned int pipe;
220 int err, size;
221
222 BT_DBG("%s", hdev->name);
223
9bfa35fe
MH		 224 if (!data->intr_ep)
225 return -ENODEV;
226
2eda66f4 227 urb = usb_alloc_urb(0, mem_flags);
5e23b923
MH		 228 if (!urb)
229 return -ENOMEM;
230
231 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
232
2eda66f4 233 buf = kmalloc(size, mem_flags);
5e23b923
MH		 234 if (!buf) {
235 usb_free_urb(urb);
236 return -ENOMEM;
237 }
238
239 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
240
241 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
242 btusb_intr_complete, hdev,
243 data->intr_ep->bInterval);
244
245 urb->transfer_flags |= URB_FREE_BUFFER;
246
247 usb_anchor_urb(urb, &data->intr_anchor);
248
2eda66f4 249 err = usb_submit_urb(urb, mem_flags);
5e23b923
MH		 250 if (err < 0) {
251 BT_ERR("%s urb %p submission failed (%d)",
252 hdev->name, urb, -err);
253 usb_unanchor_urb(urb);
5e23b923
MH		 254 }
255
256 usb_free_urb(urb);
257
258 return err;
259}
260
261static void btusb_bulk_complete(struct urb *urb)
262{
263 struct hci_dev *hdev = urb->context;
264 struct btusb_data *data = hdev->driver_data;
265 int err;
266
267 BT_DBG("%s urb %p status %d count %d", hdev->name,
268 urb, urb->status, urb->actual_length);
269
270 if (!test_bit(HCI_RUNNING, &hdev->flags))
271 return;
272
273 if (urb->status == 0) {
9bfa35fe
MH		 274 hdev->stat.byte_rx += urb->actual_length;
275
5e23b923
MH		 276 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
277 urb->transfer_buffer,
278 urb->actual_length) < 0) {
279 BT_ERR("%s corrupted ACL packet", hdev->name);
280 hdev->stat.err_rx++;
281 }
282 }
283
284 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
285 return;
286
287 usb_anchor_urb(urb, &data->bulk_anchor);
288
289 err = usb_submit_urb(urb, GFP_ATOMIC);
290 if (err < 0) {
291 BT_ERR("%s urb %p failed to resubmit (%d)",
292 hdev->name, urb, -err);
293 usb_unanchor_urb(urb);
294 }
295}
296
2eda66f4 297static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
5e23b923
MH		 298{
299 struct btusb_data *data = hdev->driver_data;
300 struct urb *urb;
301 unsigned char *buf;
302 unsigned int pipe;
303 int err, size;
304
305 BT_DBG("%s", hdev->name);
306
9bfa35fe
MH		 307 if (!data->bulk_rx_ep)
308 return -ENODEV;
309
2eda66f4 310 urb = usb_alloc_urb(0, mem_flags);
5e23b923
MH		 311 if (!urb)
312 return -ENOMEM;
313
314 size = le16_to_cpu(data->bulk_rx_ep->wMaxPacketSize);
315
2eda66f4 316 buf = kmalloc(size, mem_flags);
5e23b923
MH		 317 if (!buf) {
318 usb_free_urb(urb);
319 return -ENOMEM;
320 }
321
322 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
323
324 usb_fill_bulk_urb(urb, data->udev, pipe,
325 buf, size, btusb_bulk_complete, hdev);
326
327 urb->transfer_flags |= URB_FREE_BUFFER;
328
329 usb_anchor_urb(urb, &data->bulk_anchor);
330
2eda66f4 331 err = usb_submit_urb(urb, mem_flags);
5e23b923
MH		 332 if (err < 0) {
333 BT_ERR("%s urb %p submission failed (%d)",
334 hdev->name, urb, -err);
335 usb_unanchor_urb(urb);
5e23b923
MH		 336 }
337
338 usb_free_urb(urb);
339
340 return err;
341}
342
9bfa35fe
MH		 343static void btusb_isoc_complete(struct urb *urb)
344{
345 struct hci_dev *hdev = urb->context;
346 struct btusb_data *data = hdev->driver_data;
347 int i, err;
348
349 BT_DBG("%s urb %p status %d count %d", hdev->name,
350 urb, urb->status, urb->actual_length);
351
352 if (!test_bit(HCI_RUNNING, &hdev->flags))
353 return;
354
355 if (urb->status == 0) {
356 for (i = 0; i < urb->number_of_packets; i++) {
357 unsigned int offset = urb->iso_frame_desc[i].offset;
358 unsigned int length = urb->iso_frame_desc[i].actual_length;
359
360 if (urb->iso_frame_desc[i].status)
361 continue;
362
363 hdev->stat.byte_rx += length;
364
365 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
366 urb->transfer_buffer + offset,
367 length) < 0) {
368 BT_ERR("%s corrupted SCO packet", hdev->name);
369 hdev->stat.err_rx++;
370 }
371 }
372 }
373
374 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
375 return;
376
377 usb_anchor_urb(urb, &data->isoc_anchor);
378
379 err = usb_submit_urb(urb, GFP_ATOMIC);
380 if (err < 0) {
381 BT_ERR("%s urb %p failed to resubmit (%d)",
382 hdev->name, urb, -err);
383 usb_unanchor_urb(urb);
384 }
385}
386
387static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
388{
389 int i, offset = 0;
390
391 BT_DBG("len %d mtu %d", len, mtu);
392
393 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
394 i++, offset += mtu, len -= mtu) {
395 urb->iso_frame_desc[i].offset = offset;
396 urb->iso_frame_desc[i].length = mtu;
397 }
398
399 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
400 urb->iso_frame_desc[i].offset = offset;
401 urb->iso_frame_desc[i].length = len;
402 i++;
403 }
404
405 urb->number_of_packets = i;
406}
407
2eda66f4 408static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
9bfa35fe
MH		 409{
410 struct btusb_data *data = hdev->driver_data;
411 struct urb *urb;
412 unsigned char *buf;
413 unsigned int pipe;
414 int err, size;
415
416 BT_DBG("%s", hdev->name);
417
418 if (!data->isoc_rx_ep)
419 return -ENODEV;
420
2eda66f4 421 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
9bfa35fe
MH		 422 if (!urb)
423 return -ENOMEM;
424
425 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
426 BTUSB_MAX_ISOC_FRAMES;
427
2eda66f4 428 buf = kmalloc(size, mem_flags);
9bfa35fe
MH		 429 if (!buf) {
430 usb_free_urb(urb);
431 return -ENOMEM;
432 }
433
434 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
435
436 urb->dev = data->udev;
437 urb->pipe = pipe;
438 urb->context = hdev;
439 urb->complete = btusb_isoc_complete;
440 urb->interval = data->isoc_rx_ep->bInterval;
441
442 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
443 urb->transfer_buffer = buf;
444 urb->transfer_buffer_length = size;
445
446 __fill_isoc_descriptor(urb, size,
447 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
448
449 usb_anchor_urb(urb, &data->isoc_anchor);
450
2eda66f4 451 err = usb_submit_urb(urb, mem_flags);
9bfa35fe
MH		 452 if (err < 0) {
453 BT_ERR("%s urb %p submission failed (%d)",
454 hdev->name, urb, -err);
455 usb_unanchor_urb(urb);
9bfa35fe
MH		 456 }
457
458 usb_free_urb(urb);
459
460 return err;
461}
462
5e23b923
MH		 463static void btusb_tx_complete(struct urb *urb)
464{
465 struct sk_buff *skb = urb->context;
466 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
467
468 BT_DBG("%s urb %p status %d count %d", hdev->name,
469 urb, urb->status, urb->actual_length);
470
471 if (!test_bit(HCI_RUNNING, &hdev->flags))
472 goto done;
473
474 if (!urb->status)
475 hdev->stat.byte_tx += urb->transfer_buffer_length;
476 else
477 hdev->stat.err_tx++;
478
479done:
480 kfree(urb->setup_packet);
481
482 kfree_skb(skb);
483}
484
485static int btusb_open(struct hci_dev *hdev)
486{
487 struct btusb_data *data = hdev->driver_data;
488 int err;
489
490 BT_DBG("%s", hdev->name);
491
492 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
493 return 0;
494
495 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
496 return 0;
497
2eda66f4 498 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
5e23b923 499 if (err < 0) {
e8c3c3d2 500 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
5e23b923
MH		 501 clear_bit(HCI_RUNNING, &hdev->flags);
502 }
503
504 return err;
505}
506
507static int btusb_close(struct hci_dev *hdev)
508{
509 struct btusb_data *data = hdev->driver_data;
510
511 BT_DBG("%s", hdev->name);
512
513 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
514 return 0;
515
e8c3c3d2
MH		 516 cancel_work_sync(&data->work);
517
9bfa35fe 518 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
e8c3c3d2 519 usb_kill_anchored_urbs(&data->isoc_anchor);
9bfa35fe 520
5e23b923
MH		 521 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
522 usb_kill_anchored_urbs(&data->bulk_anchor);
523
524 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
525 usb_kill_anchored_urbs(&data->intr_anchor);
526
527 return 0;
528}
529
530static int btusb_flush(struct hci_dev *hdev)
531{
532 struct btusb_data *data = hdev->driver_data;
533
534 BT_DBG("%s", hdev->name);
535
536 usb_kill_anchored_urbs(&data->tx_anchor);
537
538 return 0;
539}
540
541static int btusb_send_frame(struct sk_buff *skb)
542{
543 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
544 struct btusb_data *data = hdev->driver_data;
545 struct usb_ctrlrequest *dr;
546 struct urb *urb;
547 unsigned int pipe;
548 int err;
549
550 BT_DBG("%s", hdev->name);
551
552 if (!test_bit(HCI_RUNNING, &hdev->flags))
553 return -EBUSY;
554
555 switch (bt_cb(skb)->pkt_type) {
556 case HCI_COMMAND_PKT:
557 urb = usb_alloc_urb(0, GFP_ATOMIC);
558 if (!urb)
559 return -ENOMEM;
560
561 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
562 if (!dr) {
563 usb_free_urb(urb);
564 return -ENOMEM;
565 }
566
7a9d4020 567 dr->bRequestType = data->cmdreq_type;
5e23b923
MH		 568 dr->bRequest = 0;
569 dr->wIndex = 0;
570 dr->wValue = 0;
571 dr->wLength = __cpu_to_le16(skb->len);
572
573 pipe = usb_sndctrlpipe(data->udev, 0x00);
574
575 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
576 skb->data, skb->len, btusb_tx_complete, skb);
577
578 hdev->stat.cmd_tx++;
579 break;
580
581 case HCI_ACLDATA_PKT:
9bfa35fe
MH		 582 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
583 return -ENODEV;
584
5e23b923
MH		 585 urb = usb_alloc_urb(0, GFP_ATOMIC);
586 if (!urb)
587 return -ENOMEM;
588
589 pipe = usb_sndbulkpipe(data->udev,
590 data->bulk_tx_ep->bEndpointAddress);
591
592 usb_fill_bulk_urb(urb, data->udev, pipe,
593 skb->data, skb->len, btusb_tx_complete, skb);
594
595 hdev->stat.acl_tx++;
596 break;
597
598 case HCI_SCODATA_PKT:
9bfa35fe
MH		 599 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
600 return -ENODEV;
601
602 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
603 if (!urb)
604 return -ENOMEM;
605
606 pipe = usb_sndisocpipe(data->udev,
607 data->isoc_tx_ep->bEndpointAddress);
608
609 urb->dev = data->udev;
610 urb->pipe = pipe;
611 urb->context = skb;
612 urb->complete = btusb_tx_complete;
613 urb->interval = data->isoc_tx_ep->bInterval;
614
615 urb->transfer_flags = URB_ISO_ASAP;
616 urb->transfer_buffer = skb->data;
617 urb->transfer_buffer_length = skb->len;
618
619 __fill_isoc_descriptor(urb, skb->len,
620 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
621
5e23b923 622 hdev->stat.sco_tx++;
9bfa35fe 623 break;
5e23b923
MH		 624
625 default:
626 return -EILSEQ;
627 }
628
629 usb_anchor_urb(urb, &data->tx_anchor);
630
631 err = usb_submit_urb(urb, GFP_ATOMIC);
632 if (err < 0) {
633 BT_ERR("%s urb %p submission failed", hdev->name, urb);
634 kfree(urb->setup_packet);
635 usb_unanchor_urb(urb);
636 }
637
638 usb_free_urb(urb);
639
640 return err;
641}
642
643static void btusb_destruct(struct hci_dev *hdev)
644{
645 struct btusb_data *data = hdev->driver_data;
646
647 BT_DBG("%s", hdev->name);
648
649 kfree(data);
650}
651
652static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
653{
654 struct btusb_data *data = hdev->driver_data;
655
656 BT_DBG("%s evt %d", hdev->name, evt);
657
a780efa8
MH		 658 if (hdev->conn_hash.acl_num > 0) {
659 if (!test_and_set_bit(BTUSB_BULK_RUNNING, &data->flags)) {
660 if (btusb_submit_bulk_urb(hdev, GFP_ATOMIC) < 0)
661 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
662 else
663 btusb_submit_bulk_urb(hdev, GFP_ATOMIC);
664 }
665 } else {
666 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
667 usb_unlink_anchored_urbs(&data->bulk_anchor);
668 }
669
670 schedule_work(&data->work);
5e23b923
MH		 671}
672
9bfa35fe
MH		 673static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
674{
675 struct btusb_data *data = hdev->driver_data;
676 struct usb_interface *intf = data->isoc;
677 struct usb_endpoint_descriptor *ep_desc;
678 int i, err;
679
680 if (!data->isoc)
681 return -ENODEV;
682
683 err = usb_set_interface(data->udev, 1, altsetting);
684 if (err < 0) {
685 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
686 return err;
687 }
688
689 data->isoc_altsetting = altsetting;
690
691 data->isoc_tx_ep = NULL;
692 data->isoc_rx_ep = NULL;
693
694 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
695 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
696
697 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
698 data->isoc_tx_ep = ep_desc;
699 continue;
700 }
701
702 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
703 data->isoc_rx_ep = ep_desc;
704 continue;
705 }
706 }
707
708 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
709 BT_ERR("%s invalid SCO descriptors", hdev->name);
710 return -ENODEV;
711 }
712
713 return 0;
714}
715
5e23b923
MH		 716static void btusb_work(struct work_struct *work)
717{
718 struct btusb_data *data = container_of(work, struct btusb_data, work);
719 struct hci_dev *hdev = data->hdev;
720
9bfa35fe
MH		 721 if (hdev->conn_hash.sco_num > 0) {
722 if (data->isoc_altsetting != 2) {
723 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
724 usb_kill_anchored_urbs(&data->isoc_anchor);
725
726 if (__set_isoc_interface(hdev, 2) < 0)
727 return;
728 }
729
730 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2eda66f4 731 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
9bfa35fe
MH		 732 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
733 else
2eda66f4 734 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
9bfa35fe
MH		 735 }
736 } else {
737 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
738 usb_kill_anchored_urbs(&data->isoc_anchor);
739
740 __set_isoc_interface(hdev, 0);
5e23b923
MH		 741 }
742}
743
744static int btusb_probe(struct usb_interface *intf,
745 const struct usb_device_id *id)
746{
747 struct usb_endpoint_descriptor *ep_desc;
748 struct btusb_data *data;
749 struct hci_dev *hdev;
750 int i, err;
751
752 BT_DBG("intf %p id %p", intf, id);
753
cfeb4145 754 /* interface numbers are hardcoded in the spec */
5e23b923
MH		 755 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
756 return -ENODEV;
757
758 if (!id->driver_info) {
759 const struct usb_device_id *match;
760 match = usb_match_id(intf, blacklist_table);
761 if (match)
762 id = match;
763 }
764
cfeb4145
MH		 765 if (id->driver_info == BTUSB_IGNORE)
766 return -ENODEV;
767
768 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
769 return -ENODEV;
770
771 if (ignore_csr && id->driver_info & BTUSB_CSR)
772 return -ENODEV;
773
774 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
775 return -ENODEV;
776
5e23b923
MH		 777 data = kzalloc(sizeof(*data), GFP_KERNEL);
778 if (!data)
779 return -ENOMEM;
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->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
785 data->intr_ep = ep_desc;
786 continue;
787 }
788
789 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
790 data->bulk_tx_ep = ep_desc;
791 continue;
792 }
793
794 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
795 data->bulk_rx_ep = ep_desc;
796 continue;
797 }
798 }
799
800 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
801 kfree(data);
802 return -ENODEV;
803 }
804
7a9d4020
MH		 805 data->cmdreq_type = USB_TYPE_CLASS;
806
5e23b923 807 data->udev = interface_to_usbdev(intf);
5fbcd260 808 data->intf = intf;
5e23b923
MH		 809
810 spin_lock_init(&data->lock);
811
812 INIT_WORK(&data->work, btusb_work);
813
814 init_usb_anchor(&data->tx_anchor);
815 init_usb_anchor(&data->intr_anchor);
816 init_usb_anchor(&data->bulk_anchor);
9bfa35fe 817 init_usb_anchor(&data->isoc_anchor);
5e23b923
MH		 818
819 hdev = hci_alloc_dev();
820 if (!hdev) {
821 kfree(data);
822 return -ENOMEM;
823 }
824
825 hdev->type = HCI_USB;
826 hdev->driver_data = data;
827
828 data->hdev = hdev;
829
830 SET_HCIDEV_DEV(hdev, &intf->dev);
831
832 hdev->open = btusb_open;
833 hdev->close = btusb_close;
834 hdev->flush = btusb_flush;
835 hdev->send = btusb_send_frame;
836 hdev->destruct = btusb_destruct;
837 hdev->notify = btusb_notify;
838
839 hdev->owner = THIS_MODULE;
840
7a9d4020 841 /* Interface numbers are hardcoded in the specification */
9bfa35fe
MH		 842 data->isoc = usb_ifnum_to_if(data->udev, 1);
843
7a9d4020
MH		 844 if (!reset)
845 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
cfeb4145
MH		 846
847 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
848 if (!disable_scofix)
849 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
850 }
851
9bfa35fe
MH		 852 if (id->driver_info & BTUSB_BROKEN_ISOC)
853 data->isoc = NULL;
854
7a9d4020
MH		 855 if (id->driver_info & BTUSB_DIGIANSWER) {
856 data->cmdreq_type = USB_TYPE_VENDOR;
857 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
858 }
859
860 if (id->driver_info & BTUSB_CSR) {
861 struct usb_device *udev = data->udev;
862
863 /* Old firmware would otherwise execute USB reset */
864 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
865 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
866 }
867
cfeb4145 868 if (id->driver_info & BTUSB_SNIFFER) {
9bfa35fe 869 struct usb_device *udev = data->udev;
cfeb4145 870
7a9d4020 871 /* New sniffer firmware has crippled HCI interface */
cfeb4145
MH		 872 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
873 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
9bfa35fe
MH		 874
875 data->isoc = NULL;
cfeb4145
MH		 876 }
877
878 if (id->driver_info & BTUSB_BCM92035) {
879 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
880 struct sk_buff *skb;
881
882 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
883 if (skb) {
884 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
885 skb_queue_tail(&hdev->driver_init, skb);
886 }
887 }
5e23b923 888
9bfa35fe
MH		 889 if (data->isoc) {
890 err = usb_driver_claim_interface(&btusb_driver,
5fbcd260 891 data->isoc, data);
9bfa35fe
MH		 892 if (err < 0) {
893 hci_free_dev(hdev);
894 kfree(data);
895 return err;
896 }
897 }
898
5e23b923
MH		 899 err = hci_register_dev(hdev);
900 if (err < 0) {
901 hci_free_dev(hdev);
902 kfree(data);
903 return err;
904 }
905
906 usb_set_intfdata(intf, data);
907
908 return 0;
909}
910
911static void btusb_disconnect(struct usb_interface *intf)
912{
913 struct btusb_data *data = usb_get_intfdata(intf);
914 struct hci_dev *hdev;
915
916 BT_DBG("intf %p", intf);
917
918 if (!data)
919 return;
920
921 hdev = data->hdev;
922
5fbcd260 923 __hci_dev_hold(hdev);
9bfa35fe 924
5fbcd260
MH		 925 usb_set_intfdata(data->intf, NULL);
926
927 if (data->isoc)
928 usb_set_intfdata(data->isoc, NULL);
5e23b923
MH		 929
930 hci_unregister_dev(hdev);
931
5fbcd260
MH		 932 if (intf == data->isoc)
933 usb_driver_release_interface(&btusb_driver, data->intf);
934 else if (data->isoc)
935 usb_driver_release_interface(&btusb_driver, data->isoc);
936
937 __hci_dev_put(hdev);
938
5e23b923
MH		 939 hci_free_dev(hdev);
940}
941
6a88adf2
MH		 942static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
943{
944 struct btusb_data *data = usb_get_intfdata(intf);
945
946 BT_DBG("intf %p", intf);
947
948 if (data->suspend_count++)
949 return 0;
950
951 cancel_work_sync(&data->work);
952
953 usb_kill_anchored_urbs(&data->tx_anchor);
954
955 usb_kill_anchored_urbs(&data->isoc_anchor);
956 usb_kill_anchored_urbs(&data->bulk_anchor);
957 usb_kill_anchored_urbs(&data->intr_anchor);
958
959 return 0;
960}
961
962static int btusb_resume(struct usb_interface *intf)
963{
964 struct btusb_data *data = usb_get_intfdata(intf);
965 struct hci_dev *hdev = data->hdev;
966 int err;
967
968 BT_DBG("intf %p", intf);
969
970 if (--data->suspend_count)
971 return 0;
972
973 if (!test_bit(HCI_RUNNING, &hdev->flags))
974 return 0;
975
976 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
977 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
978 if (err < 0) {
979 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
980 return err;
981 }
982 }
983
984 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
985 if (btusb_submit_bulk_urb(hdev, GFP_NOIO) < 0)
986 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
987 else
988 btusb_submit_bulk_urb(hdev, GFP_NOIO);
989 }
990
991 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
992 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
993 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
994 else
995 btusb_submit_isoc_urb(hdev, GFP_NOIO);
996 }
997
998 return 0;
999}
1000
5e23b923
MH		 1001static struct usb_driver btusb_driver = {
1002 .name = "btusb",
1003 .probe = btusb_probe,
1004 .disconnect = btusb_disconnect,
6a88adf2
MH		 1005 .suspend = btusb_suspend,
1006 .resume = btusb_resume,
5e23b923
MH		 1007 .id_table = btusb_table,
1008};
1009
1010static int __init btusb_init(void)
1011{
1012 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1013
1014 return usb_register(&btusb_driver);
1015}
1016
1017static void __exit btusb_exit(void)
1018{
1019 usb_deregister(&btusb_driver);
1020}
1021
1022module_init(btusb_init);
1023module_exit(btusb_exit);
1024
cfeb4145
MH		 1025module_param(ignore_dga, bool, 0644);
1026MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1027
1028module_param(ignore_csr, bool, 0644);
1029MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1030
1031module_param(ignore_sniffer, bool, 0644);
1032MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1033
1034module_param(disable_scofix, bool, 0644);
1035MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1036
1037module_param(force_scofix, bool, 0644);
1038MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1039
1040module_param(reset, bool, 0644);
1041MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1042
5e23b923
MH		 1043MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1044MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1045MODULE_VERSION(VERSION);
1046MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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