Bluetooth: Handle bulk URBs in btusb driver from notify callback
[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 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, 0x2146), .driver_info = BTUSB_RESET },
106         { USB_DEVICE(0x0a5c, 0x2151), .driver_info = BTUSB_RESET },
107
108         /* Apple MacBook Pro with Broadcom chip */
109         { USB_DEVICE(0x05ac, 0x820f), .driver_info = BTUSB_RESET },
110
111         /* IBM/Lenovo ThinkPad with Broadcom chip */
112         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
113         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
114
115         /* Targus ACB10US */
116         { USB_DEVICE(0x0a5c, 0x2100), .driver_info = BTUSB_RESET },
117         { USB_DEVICE(0x0a5c, 0x2154), .driver_info = BTUSB_RESET },
118
119         /* ANYCOM Bluetooth USB-200 and USB-250 */
120         { USB_DEVICE(0x0a5c, 0x2111), .driver_info = BTUSB_RESET },
121
122         /* HP laptop with Broadcom chip */
123         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
124
125         /* Dell laptop with Broadcom chip */
126         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
127
128         /* Dell Wireless 370 */
129         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
130
131         /* Dell Wireless 410 */
132         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
133
134         /* Microsoft Wireless Transceiver for Bluetooth 2.0 */
135         { USB_DEVICE(0x045e, 0x009c), .driver_info = BTUSB_RESET },
136
137         /* Kensington Bluetooth USB adapter */
138         { USB_DEVICE(0x047d, 0x105d), .driver_info = BTUSB_RESET },
139         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
140
141         /* ISSC Bluetooth Adapter v3.1 */
142         { USB_DEVICE(0x1131, 0x1001), .driver_info = BTUSB_RESET },
143
144         /* RTX Telecom based adapters with buggy SCO support */
145         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
146         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
147
148         /* CONWISE Technology based adapters with buggy SCO support */
149         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
150
151         /* Belkin F8T012 and F8T013 devices */
152         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
153         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
154
155         /* Belkin F8T016 device */
156         { USB_DEVICE(0x050d, 0x016a), .driver_info = BTUSB_RESET },
157
158         /* Digianswer devices */
159         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
160         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
161
162         /* CSR BlueCore Bluetooth Sniffer */
163         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
164
165         /* Frontline ComProbe Bluetooth Sniffer */
166         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
167
168         { }     /* Terminating entry */
169 };
170
171 #define BTUSB_MAX_ISOC_FRAMES   10
172
173 #define BTUSB_INTR_RUNNING      0
174 #define BTUSB_BULK_RUNNING      1
175 #define BTUSB_ISOC_RUNNING      2
176
177 struct btusb_data {
178         struct hci_dev       *hdev;
179         struct usb_device    *udev;
180         struct usb_interface *intf;
181         struct usb_interface *isoc;
182
183         spinlock_t lock;
184
185         unsigned long flags;
186
187         struct work_struct work;
188
189         struct usb_anchor tx_anchor;
190         struct usb_anchor intr_anchor;
191         struct usb_anchor bulk_anchor;
192         struct usb_anchor isoc_anchor;
193
194         struct usb_endpoint_descriptor *intr_ep;
195         struct usb_endpoint_descriptor *bulk_tx_ep;
196         struct usb_endpoint_descriptor *bulk_rx_ep;
197         struct usb_endpoint_descriptor *isoc_tx_ep;
198         struct usb_endpoint_descriptor *isoc_rx_ep;
199
200         int isoc_altsetting;
201 };
202
203 static void btusb_intr_complete(struct urb *urb)
204 {
205         struct hci_dev *hdev = urb->context;
206         struct btusb_data *data = hdev->driver_data;
207         int err;
208
209         BT_DBG("%s urb %p status %d count %d", hdev->name,
210                                         urb, urb->status, urb->actual_length);
211
212         if (!test_bit(HCI_RUNNING, &hdev->flags))
213                 return;
214
215         if (urb->status == 0) {
216                 hdev->stat.byte_rx += urb->actual_length;
217
218                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
219                                                 urb->transfer_buffer,
220                                                 urb->actual_length) < 0) {
221                         BT_ERR("%s corrupted event packet", hdev->name);
222                         hdev->stat.err_rx++;
223                 }
224         }
225
226         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
227                 return;
228
229         usb_anchor_urb(urb, &data->intr_anchor);
230
231         err = usb_submit_urb(urb, GFP_ATOMIC);
232         if (err < 0) {
233                 BT_ERR("%s urb %p failed to resubmit (%d)",
234                                                 hdev->name, urb, -err);
235                 usb_unanchor_urb(urb);
236         }
237 }
238
239 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
240 {
241         struct btusb_data *data = hdev->driver_data;
242         struct urb *urb;
243         unsigned char *buf;
244         unsigned int pipe;
245         int err, size;
246
247         BT_DBG("%s", hdev->name);
248
249         if (!data->intr_ep)
250                 return -ENODEV;
251
252         urb = usb_alloc_urb(0, mem_flags);
253         if (!urb)
254                 return -ENOMEM;
255
256         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
257
258         buf = kmalloc(size, mem_flags);
259         if (!buf) {
260                 usb_free_urb(urb);
261                 return -ENOMEM;
262         }
263
264         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
265
266         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
267                                                 btusb_intr_complete, hdev,
268                                                 data->intr_ep->bInterval);
269
270         urb->transfer_flags |= URB_FREE_BUFFER;
271
272         usb_anchor_urb(urb, &data->intr_anchor);
273
274         err = usb_submit_urb(urb, mem_flags);
275         if (err < 0) {
276                 BT_ERR("%s urb %p submission failed (%d)",
277                                                 hdev->name, urb, -err);
278                 usb_unanchor_urb(urb);
279         }
280
281         usb_free_urb(urb);
282
283         return err;
284 }
285
286 static void btusb_bulk_complete(struct urb *urb)
287 {
288         struct hci_dev *hdev = urb->context;
289         struct btusb_data *data = hdev->driver_data;
290         int err;
291
292         BT_DBG("%s urb %p status %d count %d", hdev->name,
293                                         urb, urb->status, urb->actual_length);
294
295         if (!test_bit(HCI_RUNNING, &hdev->flags))
296                 return;
297
298         if (urb->status == 0) {
299                 hdev->stat.byte_rx += urb->actual_length;
300
301                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
302                                                 urb->transfer_buffer,
303                                                 urb->actual_length) < 0) {
304                         BT_ERR("%s corrupted ACL packet", hdev->name);
305                         hdev->stat.err_rx++;
306                 }
307         }
308
309         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
310                 return;
311
312         usb_anchor_urb(urb, &data->bulk_anchor);
313
314         err = usb_submit_urb(urb, GFP_ATOMIC);
315         if (err < 0) {
316                 BT_ERR("%s urb %p failed to resubmit (%d)",
317                                                 hdev->name, urb, -err);
318                 usb_unanchor_urb(urb);
319         }
320 }
321
322 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
323 {
324         struct btusb_data *data = hdev->driver_data;
325         struct urb *urb;
326         unsigned char *buf;
327         unsigned int pipe;
328         int err, size;
329
330         BT_DBG("%s", hdev->name);
331
332         if (!data->bulk_rx_ep)
333                 return -ENODEV;
334
335         urb = usb_alloc_urb(0, mem_flags);
336         if (!urb)
337                 return -ENOMEM;
338
339         size = le16_to_cpu(data->bulk_rx_ep->wMaxPacketSize);
340
341         buf = kmalloc(size, mem_flags);
342         if (!buf) {
343                 usb_free_urb(urb);
344                 return -ENOMEM;
345         }
346
347         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
348
349         usb_fill_bulk_urb(urb, data->udev, pipe,
350                                         buf, size, btusb_bulk_complete, hdev);
351
352         urb->transfer_flags |= URB_FREE_BUFFER;
353
354         usb_anchor_urb(urb, &data->bulk_anchor);
355
356         err = usb_submit_urb(urb, mem_flags);
357         if (err < 0) {
358                 BT_ERR("%s urb %p submission failed (%d)",
359                                                 hdev->name, urb, -err);
360                 usb_unanchor_urb(urb);
361         }
362
363         usb_free_urb(urb);
364
365         return err;
366 }
367
368 static void btusb_isoc_complete(struct urb *urb)
369 {
370         struct hci_dev *hdev = urb->context;
371         struct btusb_data *data = hdev->driver_data;
372         int i, err;
373
374         BT_DBG("%s urb %p status %d count %d", hdev->name,
375                                         urb, urb->status, urb->actual_length);
376
377         if (!test_bit(HCI_RUNNING, &hdev->flags))
378                 return;
379
380         if (urb->status == 0) {
381                 for (i = 0; i < urb->number_of_packets; i++) {
382                         unsigned int offset = urb->iso_frame_desc[i].offset;
383                         unsigned int length = urb->iso_frame_desc[i].actual_length;
384
385                         if (urb->iso_frame_desc[i].status)
386                                 continue;
387
388                         hdev->stat.byte_rx += length;
389
390                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
391                                                 urb->transfer_buffer + offset,
392                                                                 length) < 0) {
393                                 BT_ERR("%s corrupted SCO packet", hdev->name);
394                                 hdev->stat.err_rx++;
395                         }
396                 }
397         }
398
399         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
400                 return;
401
402         usb_anchor_urb(urb, &data->isoc_anchor);
403
404         err = usb_submit_urb(urb, GFP_ATOMIC);
405         if (err < 0) {
406                 BT_ERR("%s urb %p failed to resubmit (%d)",
407                                                 hdev->name, urb, -err);
408                 usb_unanchor_urb(urb);
409         }
410 }
411
412 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
413 {
414         int i, offset = 0;
415
416         BT_DBG("len %d mtu %d", len, mtu);
417
418         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
419                                         i++, offset += mtu, len -= mtu) {
420                 urb->iso_frame_desc[i].offset = offset;
421                 urb->iso_frame_desc[i].length = mtu;
422         }
423
424         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
425                 urb->iso_frame_desc[i].offset = offset;
426                 urb->iso_frame_desc[i].length = len;
427                 i++;
428         }
429
430         urb->number_of_packets = i;
431 }
432
433 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
434 {
435         struct btusb_data *data = hdev->driver_data;
436         struct urb *urb;
437         unsigned char *buf;
438         unsigned int pipe;
439         int err, size;
440
441         BT_DBG("%s", hdev->name);
442
443         if (!data->isoc_rx_ep)
444                 return -ENODEV;
445
446         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
447         if (!urb)
448                 return -ENOMEM;
449
450         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
451                                                 BTUSB_MAX_ISOC_FRAMES;
452
453         buf = kmalloc(size, mem_flags);
454         if (!buf) {
455                 usb_free_urb(urb);
456                 return -ENOMEM;
457         }
458
459         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
460
461         urb->dev      = data->udev;
462         urb->pipe     = pipe;
463         urb->context  = hdev;
464         urb->complete = btusb_isoc_complete;
465         urb->interval = data->isoc_rx_ep->bInterval;
466
467         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
468         urb->transfer_buffer = buf;
469         urb->transfer_buffer_length = size;
470
471         __fill_isoc_descriptor(urb, size,
472                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
473
474         usb_anchor_urb(urb, &data->isoc_anchor);
475
476         err = usb_submit_urb(urb, mem_flags);
477         if (err < 0) {
478                 BT_ERR("%s urb %p submission failed (%d)",
479                                                 hdev->name, urb, -err);
480                 usb_unanchor_urb(urb);
481         }
482
483         usb_free_urb(urb);
484
485         return err;
486 }
487
488 static void btusb_tx_complete(struct urb *urb)
489 {
490         struct sk_buff *skb = urb->context;
491         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
492
493         BT_DBG("%s urb %p status %d count %d", hdev->name,
494                                         urb, urb->status, urb->actual_length);
495
496         if (!test_bit(HCI_RUNNING, &hdev->flags))
497                 goto done;
498
499         if (!urb->status)
500                 hdev->stat.byte_tx += urb->transfer_buffer_length;
501         else
502                 hdev->stat.err_tx++;
503
504 done:
505         kfree(urb->setup_packet);
506
507         kfree_skb(skb);
508 }
509
510 static int btusb_open(struct hci_dev *hdev)
511 {
512         struct btusb_data *data = hdev->driver_data;
513         int err;
514
515         BT_DBG("%s", hdev->name);
516
517         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
518                 return 0;
519
520         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
521                 return 0;
522
523         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
524         if (err < 0) {
525                 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
526                 clear_bit(HCI_RUNNING, &hdev->flags);
527         }
528
529         return err;
530 }
531
532 static int btusb_close(struct hci_dev *hdev)
533 {
534         struct btusb_data *data = hdev->driver_data;
535
536         BT_DBG("%s", hdev->name);
537
538         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
539                 return 0;
540
541         cancel_work_sync(&data->work);
542
543         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
544         usb_kill_anchored_urbs(&data->isoc_anchor);
545
546         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
547         usb_kill_anchored_urbs(&data->bulk_anchor);
548
549         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
550         usb_kill_anchored_urbs(&data->intr_anchor);
551
552         return 0;
553 }
554
555 static int btusb_flush(struct hci_dev *hdev)
556 {
557         struct btusb_data *data = hdev->driver_data;
558
559         BT_DBG("%s", hdev->name);
560
561         usb_kill_anchored_urbs(&data->tx_anchor);
562
563         return 0;
564 }
565
566 static int btusb_send_frame(struct sk_buff *skb)
567 {
568         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
569         struct btusb_data *data = hdev->driver_data;
570         struct usb_ctrlrequest *dr;
571         struct urb *urb;
572         unsigned int pipe;
573         int err;
574
575         BT_DBG("%s", hdev->name);
576
577         if (!test_bit(HCI_RUNNING, &hdev->flags))
578                 return -EBUSY;
579
580         switch (bt_cb(skb)->pkt_type) {
581         case HCI_COMMAND_PKT:
582                 urb = usb_alloc_urb(0, GFP_ATOMIC);
583                 if (!urb)
584                         return -ENOMEM;
585
586                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
587                 if (!dr) {
588                         usb_free_urb(urb);
589                         return -ENOMEM;
590                 }
591
592                 dr->bRequestType = USB_TYPE_CLASS;
593                 dr->bRequest     = 0;
594                 dr->wIndex       = 0;
595                 dr->wValue       = 0;
596                 dr->wLength      = __cpu_to_le16(skb->len);
597
598                 pipe = usb_sndctrlpipe(data->udev, 0x00);
599
600                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
601                                 skb->data, skb->len, btusb_tx_complete, skb);
602
603                 hdev->stat.cmd_tx++;
604                 break;
605
606         case HCI_ACLDATA_PKT:
607                 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
608                         return -ENODEV;
609
610                 urb = usb_alloc_urb(0, GFP_ATOMIC);
611                 if (!urb)
612                         return -ENOMEM;
613
614                 pipe = usb_sndbulkpipe(data->udev,
615                                         data->bulk_tx_ep->bEndpointAddress);
616
617                 usb_fill_bulk_urb(urb, data->udev, pipe,
618                                 skb->data, skb->len, btusb_tx_complete, skb);
619
620                 hdev->stat.acl_tx++;
621                 break;
622
623         case HCI_SCODATA_PKT:
624                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
625                         return -ENODEV;
626
627                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
628                 if (!urb)
629                         return -ENOMEM;
630
631                 pipe = usb_sndisocpipe(data->udev,
632                                         data->isoc_tx_ep->bEndpointAddress);
633
634                 urb->dev      = data->udev;
635                 urb->pipe     = pipe;
636                 urb->context  = skb;
637                 urb->complete = btusb_tx_complete;
638                 urb->interval = data->isoc_tx_ep->bInterval;
639
640                 urb->transfer_flags  = URB_ISO_ASAP;
641                 urb->transfer_buffer = skb->data;
642                 urb->transfer_buffer_length = skb->len;
643
644                 __fill_isoc_descriptor(urb, skb->len,
645                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
646
647                 hdev->stat.sco_tx++;
648                 break;
649
650         default:
651                 return -EILSEQ;
652         }
653
654         usb_anchor_urb(urb, &data->tx_anchor);
655
656         err = usb_submit_urb(urb, GFP_ATOMIC);
657         if (err < 0) {
658                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
659                 kfree(urb->setup_packet);
660                 usb_unanchor_urb(urb);
661         }
662
663         usb_free_urb(urb);
664
665         return err;
666 }
667
668 static void btusb_destruct(struct hci_dev *hdev)
669 {
670         struct btusb_data *data = hdev->driver_data;
671
672         BT_DBG("%s", hdev->name);
673
674         kfree(data);
675 }
676
677 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
678 {
679         struct btusb_data *data = hdev->driver_data;
680
681         BT_DBG("%s evt %d", hdev->name, evt);
682
683         if (hdev->conn_hash.acl_num > 0) {
684                 if (!test_and_set_bit(BTUSB_BULK_RUNNING, &data->flags)) {
685                         if (btusb_submit_bulk_urb(hdev, GFP_ATOMIC) < 0)
686                                 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
687                         else
688                                 btusb_submit_bulk_urb(hdev, GFP_ATOMIC);
689                 }
690         } else {
691                 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
692                 usb_unlink_anchored_urbs(&data->bulk_anchor);
693         }
694
695         schedule_work(&data->work);
696 }
697
698 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
699 {
700         struct btusb_data *data = hdev->driver_data;
701         struct usb_interface *intf = data->isoc;
702         struct usb_endpoint_descriptor *ep_desc;
703         int i, err;
704
705         if (!data->isoc)
706                 return -ENODEV;
707
708         err = usb_set_interface(data->udev, 1, altsetting);
709         if (err < 0) {
710                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
711                 return err;
712         }
713
714         data->isoc_altsetting = altsetting;
715
716         data->isoc_tx_ep = NULL;
717         data->isoc_rx_ep = NULL;
718
719         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
720                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
721
722                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
723                         data->isoc_tx_ep = ep_desc;
724                         continue;
725                 }
726
727                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
728                         data->isoc_rx_ep = ep_desc;
729                         continue;
730                 }
731         }
732
733         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
734                 BT_ERR("%s invalid SCO descriptors", hdev->name);
735                 return -ENODEV;
736         }
737
738         return 0;
739 }
740
741 static void btusb_work(struct work_struct *work)
742 {
743         struct btusb_data *data = container_of(work, struct btusb_data, work);
744         struct hci_dev *hdev = data->hdev;
745
746         if (hdev->conn_hash.sco_num > 0) {
747                 if (data->isoc_altsetting != 2) {
748                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
749                         usb_kill_anchored_urbs(&data->isoc_anchor);
750
751                         if (__set_isoc_interface(hdev, 2) < 0)
752                                 return;
753                 }
754
755                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
756                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
757                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
758                         else
759                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
760                 }
761         } else {
762                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
763                 usb_kill_anchored_urbs(&data->isoc_anchor);
764
765                 __set_isoc_interface(hdev, 0);
766         }
767 }
768
769 static int btusb_probe(struct usb_interface *intf,
770                                 const struct usb_device_id *id)
771 {
772         struct usb_endpoint_descriptor *ep_desc;
773         struct btusb_data *data;
774         struct hci_dev *hdev;
775         int i, err;
776
777         BT_DBG("intf %p id %p", intf, id);
778
779         /* interface numbers are hardcoded in the spec */
780         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
781                 return -ENODEV;
782
783         if (!id->driver_info) {
784                 const struct usb_device_id *match;
785                 match = usb_match_id(intf, blacklist_table);
786                 if (match)
787                         id = match;
788         }
789
790         if (id->driver_info == BTUSB_IGNORE)
791                 return -ENODEV;
792
793         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
794                 return -ENODEV;
795
796         if (ignore_csr && id->driver_info & BTUSB_CSR)
797                 return -ENODEV;
798
799         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
800                 return -ENODEV;
801
802         data = kzalloc(sizeof(*data), GFP_KERNEL);
803         if (!data)
804                 return -ENOMEM;
805
806         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
807                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
808
809                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
810                         data->intr_ep = ep_desc;
811                         continue;
812                 }
813
814                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
815                         data->bulk_tx_ep = ep_desc;
816                         continue;
817                 }
818
819                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
820                         data->bulk_rx_ep = ep_desc;
821                         continue;
822                 }
823         }
824
825         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
826                 kfree(data);
827                 return -ENODEV;
828         }
829
830         data->udev = interface_to_usbdev(intf);
831         data->intf = intf;
832
833         spin_lock_init(&data->lock);
834
835         INIT_WORK(&data->work, btusb_work);
836
837         init_usb_anchor(&data->tx_anchor);
838         init_usb_anchor(&data->intr_anchor);
839         init_usb_anchor(&data->bulk_anchor);
840         init_usb_anchor(&data->isoc_anchor);
841
842         hdev = hci_alloc_dev();
843         if (!hdev) {
844                 kfree(data);
845                 return -ENOMEM;
846         }
847
848         hdev->type = HCI_USB;
849         hdev->driver_data = data;
850
851         data->hdev = hdev;
852
853         SET_HCIDEV_DEV(hdev, &intf->dev);
854
855         hdev->open     = btusb_open;
856         hdev->close    = btusb_close;
857         hdev->flush    = btusb_flush;
858         hdev->send     = btusb_send_frame;
859         hdev->destruct = btusb_destruct;
860         hdev->notify   = btusb_notify;
861
862         hdev->owner = THIS_MODULE;
863
864         /* interface numbers are hardcoded in the spec */
865         data->isoc = usb_ifnum_to_if(data->udev, 1);
866
867         if (reset || id->driver_info & BTUSB_RESET)
868                 set_bit(HCI_QUIRK_RESET_ON_INIT, &hdev->quirks);
869
870         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
871                 if (!disable_scofix)
872                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
873         }
874
875         if (id->driver_info & BTUSB_BROKEN_ISOC)
876                 data->isoc = NULL;
877
878         if (id->driver_info & BTUSB_SNIFFER) {
879                 struct usb_device *udev = data->udev;
880
881                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
882                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
883
884                 data->isoc = NULL;
885         }
886
887         if (id->driver_info & BTUSB_BCM92035) {
888                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
889                 struct sk_buff *skb;
890
891                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
892                 if (skb) {
893                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
894                         skb_queue_tail(&hdev->driver_init, skb);
895                 }
896         }
897
898         if (data->isoc) {
899                 err = usb_driver_claim_interface(&btusb_driver,
900                                                         data->isoc, data);
901                 if (err < 0) {
902                         hci_free_dev(hdev);
903                         kfree(data);
904                         return err;
905                 }
906         }
907
908         err = hci_register_dev(hdev);
909         if (err < 0) {
910                 hci_free_dev(hdev);
911                 kfree(data);
912                 return err;
913         }
914
915         usb_set_intfdata(intf, data);
916
917         return 0;
918 }
919
920 static void btusb_disconnect(struct usb_interface *intf)
921 {
922         struct btusb_data *data = usb_get_intfdata(intf);
923         struct hci_dev *hdev;
924
925         BT_DBG("intf %p", intf);
926
927         if (!data)
928                 return;
929
930         hdev = data->hdev;
931
932         __hci_dev_hold(hdev);
933
934         usb_set_intfdata(data->intf, NULL);
935
936         if (data->isoc)
937                 usb_set_intfdata(data->isoc, NULL);
938
939         hci_unregister_dev(hdev);
940
941         if (intf == data->isoc)
942                 usb_driver_release_interface(&btusb_driver, data->intf);
943         else if (data->isoc)
944                 usb_driver_release_interface(&btusb_driver, data->isoc);
945
946         __hci_dev_put(hdev);
947
948         hci_free_dev(hdev);
949 }
950
951 static struct usb_driver btusb_driver = {
952         .name           = "btusb",
953         .probe          = btusb_probe,
954         .disconnect     = btusb_disconnect,
955         .id_table       = btusb_table,
956 };
957
958 static int __init btusb_init(void)
959 {
960         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
961
962         return usb_register(&btusb_driver);
963 }
964
965 static void __exit btusb_exit(void)
966 {
967         usb_deregister(&btusb_driver);
968 }
969
970 module_init(btusb_init);
971 module_exit(btusb_exit);
972
973 module_param(ignore_dga, bool, 0644);
974 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
975
976 module_param(ignore_csr, bool, 0644);
977 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
978
979 module_param(ignore_sniffer, bool, 0644);
980 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
981
982 module_param(disable_scofix, bool, 0644);
983 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
984
985 module_param(force_scofix, bool, 0644);
986 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
987
988 module_param(reset, bool, 0644);
989 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
990
991 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
992 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
993 MODULE_VERSION(VERSION);
994 MODULE_LICENSE("GPL");