124db8cd144c7d020a747742c890d8489f17bfd4
[pandora-kernel.git] / 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 VERSION "0.5"
39
40 static int ignore_dga;
41 static int ignore_csr;
42 static int ignore_sniffer;
43 static int disable_scofix;
44 static int force_scofix;
45
46 static int reset = 1;
47
48 static struct usb_driver btusb_driver;
49
50 #define BTUSB_IGNORE            0x01
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
57
58 static struct usb_device_id btusb_table[] = {
59         /* Generic Bluetooth USB device */
60         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
61
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 */
76         { USB_DEVICE(0x0c10, 0x0000) },
77
78         { }     /* Terminating entry */
79 };
80
81 MODULE_DEVICE_TABLE(usb, btusb_table);
82
83 static struct usb_device_id blacklist_table[] = {
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 */
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 },
94
95         /* Broadcom BCM2045 */
96         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
97         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
98
99         /* IBM/Lenovo ThinkPad with Broadcom chip */
100         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
101         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
102
103         /* HP laptop with Broadcom chip */
104         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
105
106         /* Dell laptop with Broadcom chip */
107         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
108
109         /* Dell Wireless 370 and 410 devices */
110         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
111         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
112
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 },
116
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
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
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
140         { }     /* Terminating entry */
141 };
142
143 #define BTUSB_MAX_ISOC_FRAMES   10
144
145 #define BTUSB_INTR_RUNNING      0
146 #define BTUSB_BULK_RUNNING      1
147 #define BTUSB_ISOC_RUNNING      2
148
149 struct btusb_data {
150         struct hci_dev       *hdev;
151         struct usb_device    *udev;
152         struct usb_interface *intf;
153         struct usb_interface *isoc;
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;
164         struct usb_anchor isoc_anchor;
165
166         struct usb_endpoint_descriptor *intr_ep;
167         struct usb_endpoint_descriptor *bulk_tx_ep;
168         struct usb_endpoint_descriptor *bulk_rx_ep;
169         struct usb_endpoint_descriptor *isoc_tx_ep;
170         struct usb_endpoint_descriptor *isoc_rx_ep;
171
172         __u8 cmdreq_type;
173
174         unsigned int sco_num;
175         int isoc_altsetting;
176         int suspend_count;
177 };
178
179 static void btusb_intr_complete(struct urb *urb)
180 {
181         struct hci_dev *hdev = urb->context;
182         struct btusb_data *data = hdev->driver_data;
183         int err;
184
185         BT_DBG("%s urb %p status %d count %d", hdev->name,
186                                         urb, urb->status, urb->actual_length);
187
188         if (!test_bit(HCI_RUNNING, &hdev->flags))
189                 return;
190
191         if (urb->status == 0) {
192                 hdev->stat.byte_rx += urb->actual_length;
193
194                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
195                                                 urb->transfer_buffer,
196                                                 urb->actual_length) < 0) {
197                         BT_ERR("%s corrupted event packet", hdev->name);
198                         hdev->stat.err_rx++;
199                 }
200         }
201
202         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
203                 return;
204
205         usb_anchor_urb(urb, &data->intr_anchor);
206
207         err = usb_submit_urb(urb, GFP_ATOMIC);
208         if (err < 0) {
209                 BT_ERR("%s urb %p failed to resubmit (%d)",
210                                                 hdev->name, urb, -err);
211                 usb_unanchor_urb(urb);
212         }
213 }
214
215 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
216 {
217         struct btusb_data *data = hdev->driver_data;
218         struct urb *urb;
219         unsigned char *buf;
220         unsigned int pipe;
221         int err, size;
222
223         BT_DBG("%s", hdev->name);
224
225         if (!data->intr_ep)
226                 return -ENODEV;
227
228         urb = usb_alloc_urb(0, mem_flags);
229         if (!urb)
230                 return -ENOMEM;
231
232         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
233
234         buf = kmalloc(size, mem_flags);
235         if (!buf) {
236                 usb_free_urb(urb);
237                 return -ENOMEM;
238         }
239
240         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
241
242         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
243                                                 btusb_intr_complete, hdev,
244                                                 data->intr_ep->bInterval);
245
246         urb->transfer_flags |= URB_FREE_BUFFER;
247
248         usb_anchor_urb(urb, &data->intr_anchor);
249
250         err = usb_submit_urb(urb, mem_flags);
251         if (err < 0) {
252                 BT_ERR("%s urb %p submission failed (%d)",
253                                                 hdev->name, urb, -err);
254                 usb_unanchor_urb(urb);
255         }
256
257         usb_free_urb(urb);
258
259         return err;
260 }
261
262 static void btusb_bulk_complete(struct urb *urb)
263 {
264         struct hci_dev *hdev = urb->context;
265         struct btusb_data *data = hdev->driver_data;
266         int err;
267
268         BT_DBG("%s urb %p status %d count %d", hdev->name,
269                                         urb, urb->status, urb->actual_length);
270
271         if (!test_bit(HCI_RUNNING, &hdev->flags))
272                 return;
273
274         if (urb->status == 0) {
275                 hdev->stat.byte_rx += urb->actual_length;
276
277                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
278                                                 urb->transfer_buffer,
279                                                 urb->actual_length) < 0) {
280                         BT_ERR("%s corrupted ACL packet", hdev->name);
281                         hdev->stat.err_rx++;
282                 }
283         }
284
285         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
286                 return;
287
288         usb_anchor_urb(urb, &data->bulk_anchor);
289
290         err = usb_submit_urb(urb, GFP_ATOMIC);
291         if (err < 0) {
292                 BT_ERR("%s urb %p failed to resubmit (%d)",
293                                                 hdev->name, urb, -err);
294                 usb_unanchor_urb(urb);
295         }
296 }
297
298 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
299 {
300         struct btusb_data *data = hdev->driver_data;
301         struct urb *urb;
302         unsigned char *buf;
303         unsigned int pipe;
304         int err, size = HCI_MAX_FRAME_SIZE;
305
306         BT_DBG("%s", hdev->name);
307
308         if (!data->bulk_rx_ep)
309                 return -ENODEV;
310
311         urb = usb_alloc_urb(0, mem_flags);
312         if (!urb)
313                 return -ENOMEM;
314
315         buf = kmalloc(size, mem_flags);
316         if (!buf) {
317                 usb_free_urb(urb);
318                 return -ENOMEM;
319         }
320
321         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
322
323         usb_fill_bulk_urb(urb, data->udev, pipe,
324                                         buf, size, btusb_bulk_complete, hdev);
325
326         urb->transfer_flags |= URB_FREE_BUFFER;
327
328         usb_anchor_urb(urb, &data->bulk_anchor);
329
330         err = usb_submit_urb(urb, mem_flags);
331         if (err < 0) {
332                 BT_ERR("%s urb %p submission failed (%d)",
333                                                 hdev->name, urb, -err);
334                 usb_unanchor_urb(urb);
335         }
336
337         usb_free_urb(urb);
338
339         return err;
340 }
341
342 static void btusb_isoc_complete(struct urb *urb)
343 {
344         struct hci_dev *hdev = urb->context;
345         struct btusb_data *data = hdev->driver_data;
346         int i, err;
347
348         BT_DBG("%s urb %p status %d count %d", hdev->name,
349                                         urb, urb->status, urb->actual_length);
350
351         if (!test_bit(HCI_RUNNING, &hdev->flags))
352                 return;
353
354         if (urb->status == 0) {
355                 for (i = 0; i < urb->number_of_packets; i++) {
356                         unsigned int offset = urb->iso_frame_desc[i].offset;
357                         unsigned int length = urb->iso_frame_desc[i].actual_length;
358
359                         if (urb->iso_frame_desc[i].status)
360                                 continue;
361
362                         hdev->stat.byte_rx += length;
363
364                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
365                                                 urb->transfer_buffer + offset,
366                                                                 length) < 0) {
367                                 BT_ERR("%s corrupted SCO packet", hdev->name);
368                                 hdev->stat.err_rx++;
369                         }
370                 }
371         }
372
373         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
374                 return;
375
376         usb_anchor_urb(urb, &data->isoc_anchor);
377
378         err = usb_submit_urb(urb, GFP_ATOMIC);
379         if (err < 0) {
380                 BT_ERR("%s urb %p failed to resubmit (%d)",
381                                                 hdev->name, urb, -err);
382                 usb_unanchor_urb(urb);
383         }
384 }
385
386 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
387 {
388         int i, offset = 0;
389
390         BT_DBG("len %d mtu %d", len, mtu);
391
392         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
393                                         i++, offset += mtu, len -= mtu) {
394                 urb->iso_frame_desc[i].offset = offset;
395                 urb->iso_frame_desc[i].length = mtu;
396         }
397
398         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
399                 urb->iso_frame_desc[i].offset = offset;
400                 urb->iso_frame_desc[i].length = len;
401                 i++;
402         }
403
404         urb->number_of_packets = i;
405 }
406
407 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
408 {
409         struct btusb_data *data = hdev->driver_data;
410         struct urb *urb;
411         unsigned char *buf;
412         unsigned int pipe;
413         int err, size;
414
415         BT_DBG("%s", hdev->name);
416
417         if (!data->isoc_rx_ep)
418                 return -ENODEV;
419
420         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
421         if (!urb)
422                 return -ENOMEM;
423
424         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
425                                                 BTUSB_MAX_ISOC_FRAMES;
426
427         buf = kmalloc(size, mem_flags);
428         if (!buf) {
429                 usb_free_urb(urb);
430                 return -ENOMEM;
431         }
432
433         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
434
435         urb->dev      = data->udev;
436         urb->pipe     = pipe;
437         urb->context  = hdev;
438         urb->complete = btusb_isoc_complete;
439         urb->interval = data->isoc_rx_ep->bInterval;
440
441         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
442         urb->transfer_buffer = buf;
443         urb->transfer_buffer_length = size;
444
445         __fill_isoc_descriptor(urb, size,
446                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
447
448         usb_anchor_urb(urb, &data->isoc_anchor);
449
450         err = usb_submit_urb(urb, mem_flags);
451         if (err < 0) {
452                 BT_ERR("%s urb %p submission failed (%d)",
453                                                 hdev->name, urb, -err);
454                 usb_unanchor_urb(urb);
455         }
456
457         usb_free_urb(urb);
458
459         return err;
460 }
461
462 static void btusb_tx_complete(struct urb *urb)
463 {
464         struct sk_buff *skb = urb->context;
465         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
466
467         BT_DBG("%s urb %p status %d count %d", hdev->name,
468                                         urb, urb->status, urb->actual_length);
469
470         if (!test_bit(HCI_RUNNING, &hdev->flags))
471                 goto done;
472
473         if (!urb->status)
474                 hdev->stat.byte_tx += urb->transfer_buffer_length;
475         else
476                 hdev->stat.err_tx++;
477
478 done:
479         kfree(urb->setup_packet);
480
481         kfree_skb(skb);
482 }
483
484 static int btusb_open(struct hci_dev *hdev)
485 {
486         struct btusb_data *data = hdev->driver_data;
487         int err;
488
489         BT_DBG("%s", hdev->name);
490
491         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
492                 return 0;
493
494         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
495                 return 0;
496
497         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
498         if (err < 0)
499                 goto failed;
500
501         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
502         if (err < 0) {
503                 usb_kill_anchored_urbs(&data->intr_anchor);
504                 goto failed;
505         }
506
507         set_bit(BTUSB_BULK_RUNNING, &data->flags);
508         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
509
510         return 0;
511
512 failed:
513         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
514         clear_bit(HCI_RUNNING, &hdev->flags);
515         return err;
516 }
517
518 static int btusb_close(struct hci_dev *hdev)
519 {
520         struct btusb_data *data = hdev->driver_data;
521
522         BT_DBG("%s", hdev->name);
523
524         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
525                 return 0;
526
527         cancel_work_sync(&data->work);
528
529         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
530         usb_kill_anchored_urbs(&data->isoc_anchor);
531
532         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
533         usb_kill_anchored_urbs(&data->bulk_anchor);
534
535         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
536         usb_kill_anchored_urbs(&data->intr_anchor);
537
538         return 0;
539 }
540
541 static int btusb_flush(struct hci_dev *hdev)
542 {
543         struct btusb_data *data = hdev->driver_data;
544
545         BT_DBG("%s", hdev->name);
546
547         usb_kill_anchored_urbs(&data->tx_anchor);
548
549         return 0;
550 }
551
552 static int btusb_send_frame(struct sk_buff *skb)
553 {
554         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
555         struct btusb_data *data = hdev->driver_data;
556         struct usb_ctrlrequest *dr;
557         struct urb *urb;
558         unsigned int pipe;
559         int err;
560
561         BT_DBG("%s", hdev->name);
562
563         if (!test_bit(HCI_RUNNING, &hdev->flags))
564                 return -EBUSY;
565
566         switch (bt_cb(skb)->pkt_type) {
567         case HCI_COMMAND_PKT:
568                 urb = usb_alloc_urb(0, GFP_ATOMIC);
569                 if (!urb)
570                         return -ENOMEM;
571
572                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
573                 if (!dr) {
574                         usb_free_urb(urb);
575                         return -ENOMEM;
576                 }
577
578                 dr->bRequestType = data->cmdreq_type;
579                 dr->bRequest     = 0;
580                 dr->wIndex       = 0;
581                 dr->wValue       = 0;
582                 dr->wLength      = __cpu_to_le16(skb->len);
583
584                 pipe = usb_sndctrlpipe(data->udev, 0x00);
585
586                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
587                                 skb->data, skb->len, btusb_tx_complete, skb);
588
589                 hdev->stat.cmd_tx++;
590                 break;
591
592         case HCI_ACLDATA_PKT:
593                 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
594                         return -ENODEV;
595
596                 urb = usb_alloc_urb(0, GFP_ATOMIC);
597                 if (!urb)
598                         return -ENOMEM;
599
600                 pipe = usb_sndbulkpipe(data->udev,
601                                         data->bulk_tx_ep->bEndpointAddress);
602
603                 usb_fill_bulk_urb(urb, data->udev, pipe,
604                                 skb->data, skb->len, btusb_tx_complete, skb);
605
606                 hdev->stat.acl_tx++;
607                 break;
608
609         case HCI_SCODATA_PKT:
610                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
611                         return -ENODEV;
612
613                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
614                 if (!urb)
615                         return -ENOMEM;
616
617                 pipe = usb_sndisocpipe(data->udev,
618                                         data->isoc_tx_ep->bEndpointAddress);
619
620                 urb->dev      = data->udev;
621                 urb->pipe     = pipe;
622                 urb->context  = skb;
623                 urb->complete = btusb_tx_complete;
624                 urb->interval = data->isoc_tx_ep->bInterval;
625
626                 urb->transfer_flags  = URB_ISO_ASAP;
627                 urb->transfer_buffer = skb->data;
628                 urb->transfer_buffer_length = skb->len;
629
630                 __fill_isoc_descriptor(urb, skb->len,
631                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
632
633                 hdev->stat.sco_tx++;
634                 break;
635
636         default:
637                 return -EILSEQ;
638         }
639
640         usb_anchor_urb(urb, &data->tx_anchor);
641
642         err = usb_submit_urb(urb, GFP_ATOMIC);
643         if (err < 0) {
644                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
645                 kfree(urb->setup_packet);
646                 usb_unanchor_urb(urb);
647         }
648
649         usb_free_urb(urb);
650
651         return err;
652 }
653
654 static void btusb_destruct(struct hci_dev *hdev)
655 {
656         struct btusb_data *data = hdev->driver_data;
657
658         BT_DBG("%s", hdev->name);
659
660         kfree(data);
661 }
662
663 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
664 {
665         struct btusb_data *data = hdev->driver_data;
666
667         BT_DBG("%s evt %d", hdev->name, evt);
668
669         if (hdev->conn_hash.sco_num != data->sco_num) {
670                 data->sco_num = hdev->conn_hash.sco_num;
671                 schedule_work(&data->work);
672         }
673 }
674
675 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
676 {
677         struct btusb_data *data = hdev->driver_data;
678         struct usb_interface *intf = data->isoc;
679         struct usb_endpoint_descriptor *ep_desc;
680         int i, err;
681
682         if (!data->isoc)
683                 return -ENODEV;
684
685         err = usb_set_interface(data->udev, 1, altsetting);
686         if (err < 0) {
687                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
688                 return err;
689         }
690
691         data->isoc_altsetting = altsetting;
692
693         data->isoc_tx_ep = NULL;
694         data->isoc_rx_ep = NULL;
695
696         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
697                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
698
699                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
700                         data->isoc_tx_ep = ep_desc;
701                         continue;
702                 }
703
704                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
705                         data->isoc_rx_ep = ep_desc;
706                         continue;
707                 }
708         }
709
710         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
711                 BT_ERR("%s invalid SCO descriptors", hdev->name);
712                 return -ENODEV;
713         }
714
715         return 0;
716 }
717
718 static void btusb_work(struct work_struct *work)
719 {
720         struct btusb_data *data = container_of(work, struct btusb_data, work);
721         struct hci_dev *hdev = data->hdev;
722
723         if (hdev->conn_hash.sco_num > 0) {
724                 if (data->isoc_altsetting != 2) {
725                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
726                         usb_kill_anchored_urbs(&data->isoc_anchor);
727
728                         if (__set_isoc_interface(hdev, 2) < 0)
729                                 return;
730                 }
731
732                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
733                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
734                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
735                         else
736                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
737                 }
738         } else {
739                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
740                 usb_kill_anchored_urbs(&data->isoc_anchor);
741
742                 __set_isoc_interface(hdev, 0);
743         }
744 }
745
746 static int btusb_probe(struct usb_interface *intf,
747                                 const struct usb_device_id *id)
748 {
749         struct usb_endpoint_descriptor *ep_desc;
750         struct btusb_data *data;
751         struct hci_dev *hdev;
752         int i, err;
753
754         BT_DBG("intf %p id %p", intf, id);
755
756         /* interface numbers are hardcoded in the spec */
757         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
758                 return -ENODEV;
759
760         if (!id->driver_info) {
761                 const struct usb_device_id *match;
762                 match = usb_match_id(intf, blacklist_table);
763                 if (match)
764                         id = match;
765         }
766
767         if (id->driver_info == BTUSB_IGNORE)
768                 return -ENODEV;
769
770         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
771                 return -ENODEV;
772
773         if (ignore_csr && id->driver_info & BTUSB_CSR)
774                 return -ENODEV;
775
776         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
777                 return -ENODEV;
778
779         data = kzalloc(sizeof(*data), GFP_KERNEL);
780         if (!data)
781                 return -ENOMEM;
782
783         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
784                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
785
786                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
787                         data->intr_ep = ep_desc;
788                         continue;
789                 }
790
791                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
792                         data->bulk_tx_ep = ep_desc;
793                         continue;
794                 }
795
796                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
797                         data->bulk_rx_ep = ep_desc;
798                         continue;
799                 }
800         }
801
802         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
803                 kfree(data);
804                 return -ENODEV;
805         }
806
807         data->cmdreq_type = USB_TYPE_CLASS;
808
809         data->udev = interface_to_usbdev(intf);
810         data->intf = intf;
811
812         spin_lock_init(&data->lock);
813
814         INIT_WORK(&data->work, btusb_work);
815
816         init_usb_anchor(&data->tx_anchor);
817         init_usb_anchor(&data->intr_anchor);
818         init_usb_anchor(&data->bulk_anchor);
819         init_usb_anchor(&data->isoc_anchor);
820
821         hdev = hci_alloc_dev();
822         if (!hdev) {
823                 kfree(data);
824                 return -ENOMEM;
825         }
826
827         hdev->type = HCI_USB;
828         hdev->driver_data = data;
829
830         data->hdev = hdev;
831
832         SET_HCIDEV_DEV(hdev, &intf->dev);
833
834         hdev->open     = btusb_open;
835         hdev->close    = btusb_close;
836         hdev->flush    = btusb_flush;
837         hdev->send     = btusb_send_frame;
838         hdev->destruct = btusb_destruct;
839         hdev->notify   = btusb_notify;
840
841         hdev->owner = THIS_MODULE;
842
843         /* Interface numbers are hardcoded in the specification */
844         data->isoc = usb_ifnum_to_if(data->udev, 1);
845
846         if (!reset)
847                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
848
849         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
850                 if (!disable_scofix)
851                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
852         }
853
854         if (id->driver_info & BTUSB_BROKEN_ISOC)
855                 data->isoc = NULL;
856
857         if (id->driver_info & BTUSB_DIGIANSWER) {
858                 data->cmdreq_type = USB_TYPE_VENDOR;
859                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
860         }
861
862         if (id->driver_info & BTUSB_CSR) {
863                 struct usb_device *udev = data->udev;
864
865                 /* Old firmware would otherwise execute USB reset */
866                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
867                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
868         }
869
870         if (id->driver_info & BTUSB_SNIFFER) {
871                 struct usb_device *udev = data->udev;
872
873                 /* New sniffer firmware has crippled HCI interface */
874                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
875                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
876
877                 data->isoc = NULL;
878         }
879
880         if (id->driver_info & BTUSB_BCM92035) {
881                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
882                 struct sk_buff *skb;
883
884                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
885                 if (skb) {
886                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
887                         skb_queue_tail(&hdev->driver_init, skb);
888                 }
889         }
890
891         if (data->isoc) {
892                 err = usb_driver_claim_interface(&btusb_driver,
893                                                         data->isoc, data);
894                 if (err < 0) {
895                         hci_free_dev(hdev);
896                         kfree(data);
897                         return err;
898                 }
899         }
900
901         err = hci_register_dev(hdev);
902         if (err < 0) {
903                 hci_free_dev(hdev);
904                 kfree(data);
905                 return err;
906         }
907
908         usb_set_intfdata(intf, data);
909
910         return 0;
911 }
912
913 static void btusb_disconnect(struct usb_interface *intf)
914 {
915         struct btusb_data *data = usb_get_intfdata(intf);
916         struct hci_dev *hdev;
917
918         BT_DBG("intf %p", intf);
919
920         if (!data)
921                 return;
922
923         hdev = data->hdev;
924
925         __hci_dev_hold(hdev);
926
927         usb_set_intfdata(data->intf, NULL);
928
929         if (data->isoc)
930                 usb_set_intfdata(data->isoc, NULL);
931
932         hci_unregister_dev(hdev);
933
934         if (intf == data->isoc)
935                 usb_driver_release_interface(&btusb_driver, data->intf);
936         else if (data->isoc)
937                 usb_driver_release_interface(&btusb_driver, data->isoc);
938
939         __hci_dev_put(hdev);
940
941         hci_free_dev(hdev);
942 }
943
944 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
945 {
946         struct btusb_data *data = usb_get_intfdata(intf);
947
948         BT_DBG("intf %p", intf);
949
950         if (data->suspend_count++)
951                 return 0;
952
953         cancel_work_sync(&data->work);
954
955         usb_kill_anchored_urbs(&data->tx_anchor);
956
957         usb_kill_anchored_urbs(&data->isoc_anchor);
958         usb_kill_anchored_urbs(&data->bulk_anchor);
959         usb_kill_anchored_urbs(&data->intr_anchor);
960
961         return 0;
962 }
963
964 static int btusb_resume(struct usb_interface *intf)
965 {
966         struct btusb_data *data = usb_get_intfdata(intf);
967         struct hci_dev *hdev = data->hdev;
968         int err;
969
970         BT_DBG("intf %p", intf);
971
972         if (--data->suspend_count)
973                 return 0;
974
975         if (!test_bit(HCI_RUNNING, &hdev->flags))
976                 return 0;
977
978         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
979                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
980                 if (err < 0) {
981                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
982                         return err;
983                 }
984         }
985
986         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
987                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
988                 if (err < 0) {
989                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
990                         return err;
991                 } else
992                         btusb_submit_bulk_urb(hdev, GFP_NOIO);
993         }
994
995         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
996                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
997                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
998                 else
999                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1000         }
1001
1002         return 0;
1003 }
1004
1005 static struct usb_driver btusb_driver = {
1006         .name           = "btusb",
1007         .probe          = btusb_probe,
1008         .disconnect     = btusb_disconnect,
1009         .suspend        = btusb_suspend,
1010         .resume         = btusb_resume,
1011         .id_table       = btusb_table,
1012 };
1013
1014 static int __init btusb_init(void)
1015 {
1016         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1017
1018         return usb_register(&btusb_driver);
1019 }
1020
1021 static void __exit btusb_exit(void)
1022 {
1023         usb_deregister(&btusb_driver);
1024 }
1025
1026 module_init(btusb_init);
1027 module_exit(btusb_exit);
1028
1029 module_param(ignore_dga, bool, 0644);
1030 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1031
1032 module_param(ignore_csr, bool, 0644);
1033 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1034
1035 module_param(ignore_sniffer, bool, 0644);
1036 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1037
1038 module_param(disable_scofix, bool, 0644);
1039 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1040
1041 module_param(force_scofix, bool, 0644);
1042 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1043
1044 module_param(reset, bool, 0644);
1045 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1046
1047 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1048 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1049 MODULE_VERSION(VERSION);
1050 MODULE_LICENSE("GPL");