Bluetooth: Enable per-module dynamic debug messages
[linux-2.6.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 "0.4"
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         int isoc_altsetting;
175         int suspend_count;
176 };
177
178 static 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) {
191                 hdev->stat.byte_rx += urb->actual_length;
192
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
214 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
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
224         if (!data->intr_ep)
225                 return -ENODEV;
226
227         urb = usb_alloc_urb(0, mem_flags);
228         if (!urb)
229                 return -ENOMEM;
230
231         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
232
233         buf = kmalloc(size, mem_flags);
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
249         err = usb_submit_urb(urb, mem_flags);
250         if (err < 0) {
251                 BT_ERR("%s urb %p submission failed (%d)",
252                                                 hdev->name, urb, -err);
253                 usb_unanchor_urb(urb);
254         }
255
256         usb_free_urb(urb);
257
258         return err;
259 }
260
261 static 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) {
274                 hdev->stat.byte_rx += urb->actual_length;
275
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
297 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
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
307         if (!data->bulk_rx_ep)
308                 return -ENODEV;
309
310         urb = usb_alloc_urb(0, mem_flags);
311         if (!urb)
312                 return -ENOMEM;
313
314         size = le16_to_cpu(data->bulk_rx_ep->wMaxPacketSize);
315
316         buf = kmalloc(size, mem_flags);
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
331         err = usb_submit_urb(urb, mem_flags);
332         if (err < 0) {
333                 BT_ERR("%s urb %p submission failed (%d)",
334                                                 hdev->name, urb, -err);
335                 usb_unanchor_urb(urb);
336         }
337
338         usb_free_urb(urb);
339
340         return err;
341 }
342
343 static 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
387 static 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
408 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
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
421         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
422         if (!urb)
423                 return -ENOMEM;
424
425         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
426                                                 BTUSB_MAX_ISOC_FRAMES;
427
428         buf = kmalloc(size, mem_flags);
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
451         err = usb_submit_urb(urb, mem_flags);
452         if (err < 0) {
453                 BT_ERR("%s urb %p submission failed (%d)",
454                                                 hdev->name, urb, -err);
455                 usb_unanchor_urb(urb);
456         }
457
458         usb_free_urb(urb);
459
460         return err;
461 }
462
463 static 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
479 done:
480         kfree(urb->setup_packet);
481
482         kfree_skb(skb);
483 }
484
485 static 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
498         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
499         if (err < 0) {
500                 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
501                 clear_bit(HCI_RUNNING, &hdev->flags);
502         }
503
504         return err;
505 }
506
507 static 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
516         cancel_work_sync(&data->work);
517
518         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
519         usb_kill_anchored_urbs(&data->isoc_anchor);
520
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
530 static 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
541 static 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
567                 dr->bRequestType = data->cmdreq_type;
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:
582                 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
583                         return -ENODEV;
584
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:
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
622                 hdev->stat.sco_tx++;
623                 break;
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
643 static 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
652 static 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
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);
671 }
672
673 static 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
716 static 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
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)) {
731                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
732                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
733                         else
734                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
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);
741         }
742 }
743
744 static 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
754         /* interface numbers are hardcoded in the spec */
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
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
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
805         data->cmdreq_type = USB_TYPE_CLASS;
806
807         data->udev = interface_to_usbdev(intf);
808         data->intf = intf;
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);
817         init_usb_anchor(&data->isoc_anchor);
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
841         /* Interface numbers are hardcoded in the specification */
842         data->isoc = usb_ifnum_to_if(data->udev, 1);
843
844         if (!reset)
845                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
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
852         if (id->driver_info & BTUSB_BROKEN_ISOC)
853                 data->isoc = NULL;
854
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
868         if (id->driver_info & BTUSB_SNIFFER) {
869                 struct usb_device *udev = data->udev;
870
871                 /* New sniffer firmware has crippled HCI interface */
872                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
873                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
874
875                 data->isoc = NULL;
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         }
888
889         if (data->isoc) {
890                 err = usb_driver_claim_interface(&btusb_driver,
891                                                         data->isoc, data);
892                 if (err < 0) {
893                         hci_free_dev(hdev);
894                         kfree(data);
895                         return err;
896                 }
897         }
898
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
911 static 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
923         __hci_dev_hold(hdev);
924
925         usb_set_intfdata(data->intf, NULL);
926
927         if (data->isoc)
928                 usb_set_intfdata(data->isoc, NULL);
929
930         hci_unregister_dev(hdev);
931
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
939         hci_free_dev(hdev);
940 }
941
942 static 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
962 static 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
1001 static struct usb_driver btusb_driver = {
1002         .name           = "btusb",
1003         .probe          = btusb_probe,
1004         .disconnect     = btusb_disconnect,
1005         .suspend        = btusb_suspend,
1006         .resume         = btusb_resume,
1007         .id_table       = btusb_table,
1008 };
1009
1010 static 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
1017 static void __exit btusb_exit(void)
1018 {
1019         usb_deregister(&btusb_driver);
1020 }
1021
1022 module_init(btusb_init);
1023 module_exit(btusb_exit);
1024
1025 module_param(ignore_dga, bool, 0644);
1026 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1027
1028 module_param(ignore_csr, bool, 0644);
1029 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1030
1031 module_param(ignore_sniffer, bool, 0644);
1032 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1033
1034 module_param(disable_scofix, bool, 0644);
1035 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1036
1037 module_param(force_scofix, bool, 0644);
1038 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1039
1040 module_param(reset, bool, 0644);
1041 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1042
1043 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1044 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1045 MODULE_VERSION(VERSION);
1046 MODULE_LICENSE("GPL");