Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-2.6] / drivers / bluetooth / btusb.c
1 /*
2  *
3  *  Generic Bluetooth USB driver
4  *
5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
6  *
7  *
8  *  This program is free software; you can redistribute it and/or modify
9  *  it under the terms of the GNU General Public License as published by
10  *  the Free Software Foundation; either version 2 of the License, or
11  *  (at your option) any later version.
12  *
13  *  This program is distributed in the hope that it will be useful,
14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  *  GNU General Public License for more details.
17  *
18  *  You should have received a copy of the GNU General Public License
19  *  along with this program; if not, write to the Free Software
20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
21  *
22  */
23
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/slab.h>
28 #include <linux/types.h>
29 #include <linux/sched.h>
30 #include <linux/errno.h>
31 #include <linux/skbuff.h>
32
33 #include <linux/usb.h>
34
35 #include <net/bluetooth/bluetooth.h>
36 #include <net/bluetooth/hci_core.h>
37
38 //#define CONFIG_BT_HCIBTUSB_DEBUG
39 #ifndef CONFIG_BT_HCIBTUSB_DEBUG
40 #undef  BT_DBG
41 #define BT_DBG(D...)
42 #endif
43
44 #define VERSION "0.3"
45
46 static int ignore_dga;
47 static int ignore_csr;
48 static int ignore_sniffer;
49 static int disable_scofix;
50 static int force_scofix;
51 static int reset;
52
53 static struct usb_driver btusb_driver;
54
55 #define BTUSB_IGNORE            0x01
56 #define BTUSB_RESET             0x02
57 #define BTUSB_DIGIANSWER        0x04
58 #define BTUSB_CSR               0x08
59 #define BTUSB_SNIFFER           0x10
60 #define BTUSB_BCM92035          0x20
61 #define BTUSB_BROKEN_ISOC       0x40
62 #define BTUSB_WRONG_SCO_MTU     0x80
63
64 static struct usb_device_id btusb_table[] = {
65         /* Generic Bluetooth USB device */
66         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
67
68         /* AVM BlueFRITZ! USB v2.0 */
69         { USB_DEVICE(0x057c, 0x3800) },
70
71         /* Bluetooth Ultraport Module from IBM */
72         { USB_DEVICE(0x04bf, 0x030a) },
73
74         /* ALPS Modules with non-standard id */
75         { USB_DEVICE(0x044e, 0x3001) },
76         { USB_DEVICE(0x044e, 0x3002) },
77
78         /* Ericsson with non-standard id */
79         { USB_DEVICE(0x0bdb, 0x1002) },
80
81         /* Canyon CN-BTU1 with HID interfaces */
82         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_RESET },
83
84         { }     /* Terminating entry */
85 };
86
87 MODULE_DEVICE_TABLE(usb, btusb_table);
88
89 static struct usb_device_id blacklist_table[] = {
90         /* CSR BlueCore devices */
91         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
92
93         /* Broadcom BCM2033 without firmware */
94         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
95
96         /* Broadcom BCM2035 */
97         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
98         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
99
100         /* Broadcom BCM2045 */
101         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
102         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
103
104         /* Broadcom BCM2046 */
105         { USB_DEVICE(0x0a5c, 0x2151), .driver_info = BTUSB_RESET },
106
107         /* IBM/Lenovo ThinkPad with Broadcom chip */
108         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
109         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
110
111         /* Targus ACB10US */
112         { USB_DEVICE(0x0a5c, 0x2100), .driver_info = BTUSB_RESET },
113
114         /* ANYCOM Bluetooth USB-200 and USB-250 */
115         { USB_DEVICE(0x0a5c, 0x2111), .driver_info = BTUSB_RESET },
116
117         /* HP laptop with Broadcom chip */
118         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
119
120         /* Dell laptop with Broadcom chip */
121         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
122
123         /* Dell Wireless 370 */
124         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
125
126         /* Dell Wireless 410 */
127         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
128
129         /* Microsoft Wireless Transceiver for Bluetooth 2.0 */
130         { USB_DEVICE(0x045e, 0x009c), .driver_info = BTUSB_RESET },
131
132         /* Kensington Bluetooth USB adapter */
133         { USB_DEVICE(0x047d, 0x105d), .driver_info = BTUSB_RESET },
134         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
135
136         /* ISSC Bluetooth Adapter v3.1 */
137         { USB_DEVICE(0x1131, 0x1001), .driver_info = BTUSB_RESET },
138
139         /* RTX Telecom based adapters with buggy SCO support */
140         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
141         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
142
143         /* CONWISE Technology based adapters with buggy SCO support */
144         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
145
146         /* Belkin F8T012 and F8T013 devices */
147         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
148         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
149
150         /* Digianswer devices */
151         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
152         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
153
154         /* CSR BlueCore Bluetooth Sniffer */
155         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
156
157         /* Frontline ComProbe Bluetooth Sniffer */
158         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
159
160         { }     /* Terminating entry */
161 };
162
163 #define BTUSB_MAX_ISOC_FRAMES   10
164
165 #define BTUSB_INTR_RUNNING      0
166 #define BTUSB_BULK_RUNNING      1
167 #define BTUSB_ISOC_RUNNING      2
168
169 struct btusb_data {
170         struct hci_dev       *hdev;
171         struct usb_device    *udev;
172         struct usb_interface *isoc;
173
174         spinlock_t lock;
175
176         unsigned long flags;
177
178         struct work_struct work;
179
180         struct usb_anchor tx_anchor;
181         struct usb_anchor intr_anchor;
182         struct usb_anchor bulk_anchor;
183         struct usb_anchor isoc_anchor;
184
185         struct usb_endpoint_descriptor *intr_ep;
186         struct usb_endpoint_descriptor *bulk_tx_ep;
187         struct usb_endpoint_descriptor *bulk_rx_ep;
188         struct usb_endpoint_descriptor *isoc_tx_ep;
189         struct usb_endpoint_descriptor *isoc_rx_ep;
190
191         int isoc_altsetting;
192 };
193
194 static void btusb_intr_complete(struct urb *urb)
195 {
196         struct hci_dev *hdev = urb->context;
197         struct btusb_data *data = hdev->driver_data;
198         int err;
199
200         BT_DBG("%s urb %p status %d count %d", hdev->name,
201                                         urb, urb->status, urb->actual_length);
202
203         if (!test_bit(HCI_RUNNING, &hdev->flags))
204                 return;
205
206         if (urb->status == 0) {
207                 hdev->stat.byte_rx += urb->actual_length;
208
209                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
210                                                 urb->transfer_buffer,
211                                                 urb->actual_length) < 0) {
212                         BT_ERR("%s corrupted event packet", hdev->name);
213                         hdev->stat.err_rx++;
214                 }
215         }
216
217         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
218                 return;
219
220         usb_anchor_urb(urb, &data->intr_anchor);
221
222         err = usb_submit_urb(urb, GFP_ATOMIC);
223         if (err < 0) {
224                 BT_ERR("%s urb %p failed to resubmit (%d)",
225                                                 hdev->name, urb, -err);
226                 usb_unanchor_urb(urb);
227         }
228 }
229
230 static int btusb_submit_intr_urb(struct hci_dev *hdev)
231 {
232         struct btusb_data *data = hdev->driver_data;
233         struct urb *urb;
234         unsigned char *buf;
235         unsigned int pipe;
236         int err, size;
237
238         BT_DBG("%s", hdev->name);
239
240         if (!data->intr_ep)
241                 return -ENODEV;
242
243         urb = usb_alloc_urb(0, GFP_ATOMIC);
244         if (!urb)
245                 return -ENOMEM;
246
247         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
248
249         buf = kmalloc(size, GFP_ATOMIC);
250         if (!buf) {
251                 usb_free_urb(urb);
252                 return -ENOMEM;
253         }
254
255         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
256
257         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
258                                                 btusb_intr_complete, hdev,
259                                                 data->intr_ep->bInterval);
260
261         urb->transfer_flags |= URB_FREE_BUFFER;
262
263         usb_anchor_urb(urb, &data->intr_anchor);
264
265         err = usb_submit_urb(urb, GFP_ATOMIC);
266         if (err < 0) {
267                 BT_ERR("%s urb %p submission failed (%d)",
268                                                 hdev->name, urb, -err);
269                 usb_unanchor_urb(urb);
270                 kfree(buf);
271         }
272
273         usb_free_urb(urb);
274
275         return err;
276 }
277
278 static void btusb_bulk_complete(struct urb *urb)
279 {
280         struct hci_dev *hdev = urb->context;
281         struct btusb_data *data = hdev->driver_data;
282         int err;
283
284         BT_DBG("%s urb %p status %d count %d", hdev->name,
285                                         urb, urb->status, urb->actual_length);
286
287         if (!test_bit(HCI_RUNNING, &hdev->flags))
288                 return;
289
290         if (urb->status == 0) {
291                 hdev->stat.byte_rx += urb->actual_length;
292
293                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
294                                                 urb->transfer_buffer,
295                                                 urb->actual_length) < 0) {
296                         BT_ERR("%s corrupted ACL packet", hdev->name);
297                         hdev->stat.err_rx++;
298                 }
299         }
300
301         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
302                 return;
303
304         usb_anchor_urb(urb, &data->bulk_anchor);
305
306         err = usb_submit_urb(urb, GFP_ATOMIC);
307         if (err < 0) {
308                 BT_ERR("%s urb %p failed to resubmit (%d)",
309                                                 hdev->name, urb, -err);
310                 usb_unanchor_urb(urb);
311         }
312 }
313
314 static int btusb_submit_bulk_urb(struct hci_dev *hdev)
315 {
316         struct btusb_data *data = hdev->driver_data;
317         struct urb *urb;
318         unsigned char *buf;
319         unsigned int pipe;
320         int err, size;
321
322         BT_DBG("%s", hdev->name);
323
324         if (!data->bulk_rx_ep)
325                 return -ENODEV;
326
327         urb = usb_alloc_urb(0, GFP_KERNEL);
328         if (!urb)
329                 return -ENOMEM;
330
331         size = le16_to_cpu(data->bulk_rx_ep->wMaxPacketSize);
332
333         buf = kmalloc(size, GFP_KERNEL);
334         if (!buf) {
335                 usb_free_urb(urb);
336                 return -ENOMEM;
337         }
338
339         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
340
341         usb_fill_bulk_urb(urb, data->udev, pipe,
342                                         buf, size, btusb_bulk_complete, hdev);
343
344         urb->transfer_flags |= URB_FREE_BUFFER;
345
346         usb_anchor_urb(urb, &data->bulk_anchor);
347
348         err = usb_submit_urb(urb, GFP_KERNEL);
349         if (err < 0) {
350                 BT_ERR("%s urb %p submission failed (%d)",
351                                                 hdev->name, urb, -err);
352                 usb_unanchor_urb(urb);
353                 kfree(buf);
354         }
355
356         usb_free_urb(urb);
357
358         return err;
359 }
360
361 static void btusb_isoc_complete(struct urb *urb)
362 {
363         struct hci_dev *hdev = urb->context;
364         struct btusb_data *data = hdev->driver_data;
365         int i, err;
366
367         BT_DBG("%s urb %p status %d count %d", hdev->name,
368                                         urb, urb->status, urb->actual_length);
369
370         if (!test_bit(HCI_RUNNING, &hdev->flags))
371                 return;
372
373         if (urb->status == 0) {
374                 for (i = 0; i < urb->number_of_packets; i++) {
375                         unsigned int offset = urb->iso_frame_desc[i].offset;
376                         unsigned int length = urb->iso_frame_desc[i].actual_length;
377
378                         if (urb->iso_frame_desc[i].status)
379                                 continue;
380
381                         hdev->stat.byte_rx += length;
382
383                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
384                                                 urb->transfer_buffer + offset,
385                                                                 length) < 0) {
386                                 BT_ERR("%s corrupted SCO packet", hdev->name);
387                                 hdev->stat.err_rx++;
388                         }
389                 }
390         }
391
392         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
393                 return;
394
395         usb_anchor_urb(urb, &data->isoc_anchor);
396
397         err = usb_submit_urb(urb, GFP_ATOMIC);
398         if (err < 0) {
399                 BT_ERR("%s urb %p failed to resubmit (%d)",
400                                                 hdev->name, urb, -err);
401                 usb_unanchor_urb(urb);
402         }
403 }
404
405 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
406 {
407         int i, offset = 0;
408
409         BT_DBG("len %d mtu %d", len, mtu);
410
411         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
412                                         i++, offset += mtu, len -= mtu) {
413                 urb->iso_frame_desc[i].offset = offset;
414                 urb->iso_frame_desc[i].length = mtu;
415         }
416
417         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
418                 urb->iso_frame_desc[i].offset = offset;
419                 urb->iso_frame_desc[i].length = len;
420                 i++;
421         }
422
423         urb->number_of_packets = i;
424 }
425
426 static int btusb_submit_isoc_urb(struct hci_dev *hdev)
427 {
428         struct btusb_data *data = hdev->driver_data;
429         struct urb *urb;
430         unsigned char *buf;
431         unsigned int pipe;
432         int err, size;
433
434         BT_DBG("%s", hdev->name);
435
436         if (!data->isoc_rx_ep)
437                 return -ENODEV;
438
439         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
440         if (!urb)
441                 return -ENOMEM;
442
443         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
444                                                 BTUSB_MAX_ISOC_FRAMES;
445
446         buf = kmalloc(size, GFP_KERNEL);
447         if (!buf) {
448                 usb_free_urb(urb);
449                 return -ENOMEM;
450         }
451
452         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
453
454         urb->dev      = data->udev;
455         urb->pipe     = pipe;
456         urb->context  = hdev;
457         urb->complete = btusb_isoc_complete;
458         urb->interval = data->isoc_rx_ep->bInterval;
459
460         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
461         urb->transfer_buffer = buf;
462         urb->transfer_buffer_length = size;
463
464         __fill_isoc_descriptor(urb, size,
465                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
466
467         usb_anchor_urb(urb, &data->isoc_anchor);
468
469         err = usb_submit_urb(urb, GFP_KERNEL);
470         if (err < 0) {
471                 BT_ERR("%s urb %p submission failed (%d)",
472                                                 hdev->name, urb, -err);
473                 usb_unanchor_urb(urb);
474                 kfree(buf);
475         }
476
477         usb_free_urb(urb);
478
479         return err;
480 }
481
482 static void btusb_tx_complete(struct urb *urb)
483 {
484         struct sk_buff *skb = urb->context;
485         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
486
487         BT_DBG("%s urb %p status %d count %d", hdev->name,
488                                         urb, urb->status, urb->actual_length);
489
490         if (!test_bit(HCI_RUNNING, &hdev->flags))
491                 goto done;
492
493         if (!urb->status)
494                 hdev->stat.byte_tx += urb->transfer_buffer_length;
495         else
496                 hdev->stat.err_tx++;
497
498 done:
499         kfree(urb->setup_packet);
500
501         kfree_skb(skb);
502 }
503
504 static int btusb_open(struct hci_dev *hdev)
505 {
506         struct btusb_data *data = hdev->driver_data;
507         int err;
508
509         BT_DBG("%s", hdev->name);
510
511         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
512                 return 0;
513
514         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
515                 return 0;
516
517         err = btusb_submit_intr_urb(hdev);
518         if (err < 0) {
519                 clear_bit(BTUSB_INTR_RUNNING, &hdev->flags);
520                 clear_bit(HCI_RUNNING, &hdev->flags);
521         }
522
523         return err;
524 }
525
526 static int btusb_close(struct hci_dev *hdev)
527 {
528         struct btusb_data *data = hdev->driver_data;
529
530         BT_DBG("%s", hdev->name);
531
532         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
533                 return 0;
534
535         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
536         usb_kill_anchored_urbs(&data->intr_anchor);
537
538         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
539         usb_kill_anchored_urbs(&data->bulk_anchor);
540
541         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
542         usb_kill_anchored_urbs(&data->intr_anchor);
543
544         return 0;
545 }
546
547 static int btusb_flush(struct hci_dev *hdev)
548 {
549         struct btusb_data *data = hdev->driver_data;
550
551         BT_DBG("%s", hdev->name);
552
553         usb_kill_anchored_urbs(&data->tx_anchor);
554
555         return 0;
556 }
557
558 static int btusb_send_frame(struct sk_buff *skb)
559 {
560         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
561         struct btusb_data *data = hdev->driver_data;
562         struct usb_ctrlrequest *dr;
563         struct urb *urb;
564         unsigned int pipe;
565         int err;
566
567         BT_DBG("%s", hdev->name);
568
569         if (!test_bit(HCI_RUNNING, &hdev->flags))
570                 return -EBUSY;
571
572         switch (bt_cb(skb)->pkt_type) {
573         case HCI_COMMAND_PKT:
574                 urb = usb_alloc_urb(0, GFP_ATOMIC);
575                 if (!urb)
576                         return -ENOMEM;
577
578                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
579                 if (!dr) {
580                         usb_free_urb(urb);
581                         return -ENOMEM;
582                 }
583
584                 dr->bRequestType = USB_TYPE_CLASS;
585                 dr->bRequest     = 0;
586                 dr->wIndex       = 0;
587                 dr->wValue       = 0;
588                 dr->wLength      = __cpu_to_le16(skb->len);
589
590                 pipe = usb_sndctrlpipe(data->udev, 0x00);
591
592                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
593                                 skb->data, skb->len, btusb_tx_complete, skb);
594
595                 hdev->stat.cmd_tx++;
596                 break;
597
598         case HCI_ACLDATA_PKT:
599                 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
600                         return -ENODEV;
601
602                 urb = usb_alloc_urb(0, GFP_ATOMIC);
603                 if (!urb)
604                         return -ENOMEM;
605
606                 pipe = usb_sndbulkpipe(data->udev,
607                                         data->bulk_tx_ep->bEndpointAddress);
608
609                 usb_fill_bulk_urb(urb, data->udev, pipe,
610                                 skb->data, skb->len, btusb_tx_complete, skb);
611
612                 hdev->stat.acl_tx++;
613                 break;
614
615         case HCI_SCODATA_PKT:
616                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
617                         return -ENODEV;
618
619                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
620                 if (!urb)
621                         return -ENOMEM;
622
623                 pipe = usb_sndisocpipe(data->udev,
624                                         data->isoc_tx_ep->bEndpointAddress);
625
626                 urb->dev      = data->udev;
627                 urb->pipe     = pipe;
628                 urb->context  = skb;
629                 urb->complete = btusb_tx_complete;
630                 urb->interval = data->isoc_tx_ep->bInterval;
631
632                 urb->transfer_flags  = URB_ISO_ASAP;
633                 urb->transfer_buffer = skb->data;
634                 urb->transfer_buffer_length = skb->len;
635
636                 __fill_isoc_descriptor(urb, skb->len,
637                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
638
639                 hdev->stat.sco_tx++;
640                 break;
641
642         default:
643                 return -EILSEQ;
644         }
645
646         usb_anchor_urb(urb, &data->tx_anchor);
647
648         err = usb_submit_urb(urb, GFP_ATOMIC);
649         if (err < 0) {
650                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
651                 kfree(urb->setup_packet);
652                 usb_unanchor_urb(urb);
653         }
654
655         usb_free_urb(urb);
656
657         return err;
658 }
659
660 static void btusb_destruct(struct hci_dev *hdev)
661 {
662         struct btusb_data *data = hdev->driver_data;
663
664         BT_DBG("%s", hdev->name);
665
666         kfree(data);
667 }
668
669 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
670 {
671         struct btusb_data *data = hdev->driver_data;
672
673         BT_DBG("%s evt %d", hdev->name, evt);
674
675         if (evt == HCI_NOTIFY_CONN_ADD || evt == HCI_NOTIFY_CONN_DEL)
676                 schedule_work(&data->work);
677 }
678
679 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
680 {
681         struct btusb_data *data = hdev->driver_data;
682         struct usb_interface *intf = data->isoc;
683         struct usb_endpoint_descriptor *ep_desc;
684         int i, err;
685
686         if (!data->isoc)
687                 return -ENODEV;
688
689         err = usb_set_interface(data->udev, 1, altsetting);
690         if (err < 0) {
691                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
692                 return err;
693         }
694
695         data->isoc_altsetting = altsetting;
696
697         data->isoc_tx_ep = NULL;
698         data->isoc_rx_ep = NULL;
699
700         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
701                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
702
703                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
704                         data->isoc_tx_ep = ep_desc;
705                         continue;
706                 }
707
708                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
709                         data->isoc_rx_ep = ep_desc;
710                         continue;
711                 }
712         }
713
714         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
715                 BT_ERR("%s invalid SCO descriptors", hdev->name);
716                 return -ENODEV;
717         }
718
719         return 0;
720 }
721
722 static void btusb_work(struct work_struct *work)
723 {
724         struct btusb_data *data = container_of(work, struct btusb_data, work);
725         struct hci_dev *hdev = data->hdev;
726
727         if (hdev->conn_hash.acl_num > 0) {
728                 if (!test_and_set_bit(BTUSB_BULK_RUNNING, &data->flags)) {
729                         if (btusb_submit_bulk_urb(hdev) < 0)
730                                 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
731                         else
732                                 btusb_submit_bulk_urb(hdev);
733                 }
734         } else {
735                 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
736                 usb_kill_anchored_urbs(&data->bulk_anchor);
737         }
738
739         if (hdev->conn_hash.sco_num > 0) {
740                 if (data->isoc_altsetting != 2) {
741                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
742                         usb_kill_anchored_urbs(&data->isoc_anchor);
743
744                         if (__set_isoc_interface(hdev, 2) < 0)
745                                 return;
746                 }
747
748                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
749                         if (btusb_submit_isoc_urb(hdev) < 0)
750                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
751                         else
752                                 btusb_submit_isoc_urb(hdev);
753                 }
754         } else {
755                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
756                 usb_kill_anchored_urbs(&data->isoc_anchor);
757
758                 __set_isoc_interface(hdev, 0);
759         }
760 }
761
762 static int btusb_probe(struct usb_interface *intf,
763                                 const struct usb_device_id *id)
764 {
765         struct usb_endpoint_descriptor *ep_desc;
766         struct btusb_data *data;
767         struct hci_dev *hdev;
768         int i, err;
769
770         BT_DBG("intf %p id %p", intf, id);
771
772         /* interface numbers are hardcoded in the spec */
773         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
774                 return -ENODEV;
775
776         if (!id->driver_info) {
777                 const struct usb_device_id *match;
778                 match = usb_match_id(intf, blacklist_table);
779                 if (match)
780                         id = match;
781         }
782
783         if (id->driver_info == BTUSB_IGNORE)
784                 return -ENODEV;
785
786         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
787                 return -ENODEV;
788
789         if (ignore_csr && id->driver_info & BTUSB_CSR)
790                 return -ENODEV;
791
792         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
793                 return -ENODEV;
794
795         data = kzalloc(sizeof(*data), GFP_KERNEL);
796         if (!data)
797                 return -ENOMEM;
798
799         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
800                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
801
802                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
803                         data->intr_ep = ep_desc;
804                         continue;
805                 }
806
807                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
808                         data->bulk_tx_ep = ep_desc;
809                         continue;
810                 }
811
812                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
813                         data->bulk_rx_ep = ep_desc;
814                         continue;
815                 }
816         }
817
818         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
819                 kfree(data);
820                 return -ENODEV;
821         }
822
823         data->udev = interface_to_usbdev(intf);
824
825         spin_lock_init(&data->lock);
826
827         INIT_WORK(&data->work, btusb_work);
828
829         init_usb_anchor(&data->tx_anchor);
830         init_usb_anchor(&data->intr_anchor);
831         init_usb_anchor(&data->bulk_anchor);
832         init_usb_anchor(&data->isoc_anchor);
833
834         hdev = hci_alloc_dev();
835         if (!hdev) {
836                 kfree(data);
837                 return -ENOMEM;
838         }
839
840         hdev->type = HCI_USB;
841         hdev->driver_data = data;
842
843         data->hdev = hdev;
844
845         SET_HCIDEV_DEV(hdev, &intf->dev);
846
847         hdev->open     = btusb_open;
848         hdev->close    = btusb_close;
849         hdev->flush    = btusb_flush;
850         hdev->send     = btusb_send_frame;
851         hdev->destruct = btusb_destruct;
852         hdev->notify   = btusb_notify;
853
854         hdev->owner = THIS_MODULE;
855
856         /* interface numbers are hardcoded in the spec */
857         data->isoc = usb_ifnum_to_if(data->udev, 1);
858
859         if (reset || id->driver_info & BTUSB_RESET)
860                 set_bit(HCI_QUIRK_RESET_ON_INIT, &hdev->quirks);
861
862         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
863                 if (!disable_scofix)
864                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
865         }
866
867         if (id->driver_info & BTUSB_BROKEN_ISOC)
868                 data->isoc = NULL;
869
870         if (id->driver_info & BTUSB_SNIFFER) {
871                 struct usb_device *udev = data->udev;
872
873                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
874                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
875
876                 data->isoc = NULL;
877         }
878
879         if (id->driver_info & BTUSB_BCM92035) {
880                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
881                 struct sk_buff *skb;
882
883                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
884                 if (skb) {
885                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
886                         skb_queue_tail(&hdev->driver_init, skb);
887                 }
888         }
889
890         if (data->isoc) {
891                 err = usb_driver_claim_interface(&btusb_driver,
892                                                         data->isoc, NULL);
893                 if (err < 0) {
894                         hci_free_dev(hdev);
895                         kfree(data);
896                         return err;
897                 }
898         }
899
900         err = hci_register_dev(hdev);
901         if (err < 0) {
902                 hci_free_dev(hdev);
903                 kfree(data);
904                 return err;
905         }
906
907         usb_set_intfdata(intf, data);
908
909         return 0;
910 }
911
912 static void btusb_disconnect(struct usb_interface *intf)
913 {
914         struct btusb_data *data = usb_get_intfdata(intf);
915         struct hci_dev *hdev;
916
917         BT_DBG("intf %p", intf);
918
919         if (!data)
920                 return;
921
922         hdev = data->hdev;
923
924         if (data->isoc)
925                 usb_driver_release_interface(&btusb_driver, data->isoc);
926
927         usb_set_intfdata(intf, NULL);
928
929         hci_unregister_dev(hdev);
930
931         hci_free_dev(hdev);
932 }
933
934 static struct usb_driver btusb_driver = {
935         .name           = "btusb",
936         .probe          = btusb_probe,
937         .disconnect     = btusb_disconnect,
938         .id_table       = btusb_table,
939 };
940
941 static int __init btusb_init(void)
942 {
943         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
944
945         return usb_register(&btusb_driver);
946 }
947
948 static void __exit btusb_exit(void)
949 {
950         usb_deregister(&btusb_driver);
951 }
952
953 module_init(btusb_init);
954 module_exit(btusb_exit);
955
956 module_param(ignore_dga, bool, 0644);
957 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
958
959 module_param(ignore_csr, bool, 0644);
960 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
961
962 module_param(ignore_sniffer, bool, 0644);
963 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
964
965 module_param(disable_scofix, bool, 0644);
966 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
967
968 module_param(force_scofix, bool, 0644);
969 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
970
971 module_param(reset, bool, 0644);
972 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
973
974 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
975 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
976 MODULE_VERSION(VERSION);
977 MODULE_LICENSE("GPL");