Bluetooth: Add MacBookAir3,1(2) support
[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 "0.6"
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         /* Apple MacBookPro 7,1 */
63         { USB_DEVICE(0x05ac, 0x8213) },
64
65         /* Apple iMac11,1 */
66         { USB_DEVICE(0x05ac, 0x8215) },
67
68         /* Apple MacBookPro6,2 */
69         { USB_DEVICE(0x05ac, 0x8218) },
70
71         /* Apple MacBookAir3,1, MacBookAir3,2 */
72         { USB_DEVICE(0x05ac, 0x821b) },
73
74         /* AVM BlueFRITZ! USB v2.0 */
75         { USB_DEVICE(0x057c, 0x3800) },
76
77         /* Bluetooth Ultraport Module from IBM */
78         { USB_DEVICE(0x04bf, 0x030a) },
79
80         /* ALPS Modules with non-standard id */
81         { USB_DEVICE(0x044e, 0x3001) },
82         { USB_DEVICE(0x044e, 0x3002) },
83
84         /* Ericsson with non-standard id */
85         { USB_DEVICE(0x0bdb, 0x1002) },
86
87         /* Canyon CN-BTU1 with HID interfaces */
88         { USB_DEVICE(0x0c10, 0x0000) },
89
90         { }     /* Terminating entry */
91 };
92
93 MODULE_DEVICE_TABLE(usb, btusb_table);
94
95 static struct usb_device_id blacklist_table[] = {
96         /* CSR BlueCore devices */
97         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
98
99         /* Broadcom BCM2033 without firmware */
100         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
101
102         /* Broadcom BCM2035 */
103         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
104         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
105         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
106
107         /* Broadcom BCM2045 */
108         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
109         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
110
111         /* IBM/Lenovo ThinkPad with Broadcom chip */
112         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
113         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
114
115         /* HP laptop with Broadcom chip */
116         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
117
118         /* Dell laptop with Broadcom chip */
119         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
120
121         /* Dell Wireless 370 and 410 devices */
122         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
123         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
124
125         /* Belkin F8T012 and F8T013 devices */
126         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
127         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
128
129         /* Asus WL-BTD202 device */
130         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
131
132         /* Kensington Bluetooth USB adapter */
133         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
134
135         /* RTX Telecom based adapters with buggy SCO support */
136         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
137         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
138
139         /* CONWISE Technology based adapters with buggy SCO support */
140         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
141
142         /* Digianswer devices */
143         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
144         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
145
146         /* CSR BlueCore Bluetooth Sniffer */
147         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
148
149         /* Frontline ComProbe Bluetooth Sniffer */
150         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
151
152         { }     /* Terminating entry */
153 };
154
155 #define BTUSB_MAX_ISOC_FRAMES   10
156
157 #define BTUSB_INTR_RUNNING      0
158 #define BTUSB_BULK_RUNNING      1
159 #define BTUSB_ISOC_RUNNING      2
160 #define BTUSB_SUSPENDING        3
161 #define BTUSB_DID_ISO_RESUME    4
162
163 struct btusb_data {
164         struct hci_dev       *hdev;
165         struct usb_device    *udev;
166         struct usb_interface *intf;
167         struct usb_interface *isoc;
168
169         spinlock_t lock;
170
171         unsigned long flags;
172
173         struct work_struct work;
174         struct work_struct waker;
175
176         struct usb_anchor tx_anchor;
177         struct usb_anchor intr_anchor;
178         struct usb_anchor bulk_anchor;
179         struct usb_anchor isoc_anchor;
180         struct usb_anchor deferred;
181         int tx_in_flight;
182         spinlock_t txlock;
183
184         struct usb_endpoint_descriptor *intr_ep;
185         struct usb_endpoint_descriptor *bulk_tx_ep;
186         struct usb_endpoint_descriptor *bulk_rx_ep;
187         struct usb_endpoint_descriptor *isoc_tx_ep;
188         struct usb_endpoint_descriptor *isoc_rx_ep;
189
190         __u8 cmdreq_type;
191
192         unsigned int sco_num;
193         int isoc_altsetting;
194         int suspend_count;
195 };
196
197 static int inc_tx(struct btusb_data *data)
198 {
199         unsigned long flags;
200         int rv;
201
202         spin_lock_irqsave(&data->txlock, flags);
203         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
204         if (!rv)
205                 data->tx_in_flight++;
206         spin_unlock_irqrestore(&data->txlock, flags);
207
208         return rv;
209 }
210
211 static void btusb_intr_complete(struct urb *urb)
212 {
213         struct hci_dev *hdev = urb->context;
214         struct btusb_data *data = hdev->driver_data;
215         int err;
216
217         BT_DBG("%s urb %p status %d count %d", hdev->name,
218                                         urb, urb->status, urb->actual_length);
219
220         if (!test_bit(HCI_RUNNING, &hdev->flags))
221                 return;
222
223         if (urb->status == 0) {
224                 hdev->stat.byte_rx += urb->actual_length;
225
226                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
227                                                 urb->transfer_buffer,
228                                                 urb->actual_length) < 0) {
229                         BT_ERR("%s corrupted event packet", hdev->name);
230                         hdev->stat.err_rx++;
231                 }
232         }
233
234         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
235                 return;
236
237         usb_mark_last_busy(data->udev);
238         usb_anchor_urb(urb, &data->intr_anchor);
239
240         err = usb_submit_urb(urb, GFP_ATOMIC);
241         if (err < 0) {
242                 BT_ERR("%s urb %p failed to resubmit (%d)",
243                                                 hdev->name, urb, -err);
244                 usb_unanchor_urb(urb);
245         }
246 }
247
248 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
249 {
250         struct btusb_data *data = hdev->driver_data;
251         struct urb *urb;
252         unsigned char *buf;
253         unsigned int pipe;
254         int err, size;
255
256         BT_DBG("%s", hdev->name);
257
258         if (!data->intr_ep)
259                 return -ENODEV;
260
261         urb = usb_alloc_urb(0, mem_flags);
262         if (!urb)
263                 return -ENOMEM;
264
265         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
266
267         buf = kmalloc(size, mem_flags);
268         if (!buf) {
269                 usb_free_urb(urb);
270                 return -ENOMEM;
271         }
272
273         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
274
275         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
276                                                 btusb_intr_complete, hdev,
277                                                 data->intr_ep->bInterval);
278
279         urb->transfer_flags |= URB_FREE_BUFFER;
280
281         usb_anchor_urb(urb, &data->intr_anchor);
282
283         err = usb_submit_urb(urb, mem_flags);
284         if (err < 0) {
285                 BT_ERR("%s urb %p submission failed (%d)",
286                                                 hdev->name, urb, -err);
287                 usb_unanchor_urb(urb);
288         }
289
290         usb_free_urb(urb);
291
292         return err;
293 }
294
295 static void btusb_bulk_complete(struct urb *urb)
296 {
297         struct hci_dev *hdev = urb->context;
298         struct btusb_data *data = hdev->driver_data;
299         int err;
300
301         BT_DBG("%s urb %p status %d count %d", hdev->name,
302                                         urb, urb->status, urb->actual_length);
303
304         if (!test_bit(HCI_RUNNING, &hdev->flags))
305                 return;
306
307         if (urb->status == 0) {
308                 hdev->stat.byte_rx += urb->actual_length;
309
310                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
311                                                 urb->transfer_buffer,
312                                                 urb->actual_length) < 0) {
313                         BT_ERR("%s corrupted ACL packet", hdev->name);
314                         hdev->stat.err_rx++;
315                 }
316         }
317
318         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
319                 return;
320
321         usb_anchor_urb(urb, &data->bulk_anchor);
322         usb_mark_last_busy(data->udev);
323
324         err = usb_submit_urb(urb, GFP_ATOMIC);
325         if (err < 0) {
326                 BT_ERR("%s urb %p failed to resubmit (%d)",
327                                                 hdev->name, urb, -err);
328                 usb_unanchor_urb(urb);
329         }
330 }
331
332 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
333 {
334         struct btusb_data *data = hdev->driver_data;
335         struct urb *urb;
336         unsigned char *buf;
337         unsigned int pipe;
338         int err, size = HCI_MAX_FRAME_SIZE;
339
340         BT_DBG("%s", hdev->name);
341
342         if (!data->bulk_rx_ep)
343                 return -ENODEV;
344
345         urb = usb_alloc_urb(0, mem_flags);
346         if (!urb)
347                 return -ENOMEM;
348
349         buf = kmalloc(size, mem_flags);
350         if (!buf) {
351                 usb_free_urb(urb);
352                 return -ENOMEM;
353         }
354
355         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
356
357         usb_fill_bulk_urb(urb, data->udev, pipe,
358                                         buf, size, btusb_bulk_complete, hdev);
359
360         urb->transfer_flags |= URB_FREE_BUFFER;
361
362         usb_mark_last_busy(data->udev);
363         usb_anchor_urb(urb, &data->bulk_anchor);
364
365         err = usb_submit_urb(urb, mem_flags);
366         if (err < 0) {
367                 BT_ERR("%s urb %p submission failed (%d)",
368                                                 hdev->name, urb, -err);
369                 usb_unanchor_urb(urb);
370         }
371
372         usb_free_urb(urb);
373
374         return err;
375 }
376
377 static void btusb_isoc_complete(struct urb *urb)
378 {
379         struct hci_dev *hdev = urb->context;
380         struct btusb_data *data = hdev->driver_data;
381         int i, err;
382
383         BT_DBG("%s urb %p status %d count %d", hdev->name,
384                                         urb, urb->status, urb->actual_length);
385
386         if (!test_bit(HCI_RUNNING, &hdev->flags))
387                 return;
388
389         if (urb->status == 0) {
390                 for (i = 0; i < urb->number_of_packets; i++) {
391                         unsigned int offset = urb->iso_frame_desc[i].offset;
392                         unsigned int length = urb->iso_frame_desc[i].actual_length;
393
394                         if (urb->iso_frame_desc[i].status)
395                                 continue;
396
397                         hdev->stat.byte_rx += length;
398
399                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
400                                                 urb->transfer_buffer + offset,
401                                                                 length) < 0) {
402                                 BT_ERR("%s corrupted SCO packet", hdev->name);
403                                 hdev->stat.err_rx++;
404                         }
405                 }
406         }
407
408         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
409                 return;
410
411         usb_anchor_urb(urb, &data->isoc_anchor);
412
413         err = usb_submit_urb(urb, GFP_ATOMIC);
414         if (err < 0) {
415                 BT_ERR("%s urb %p failed to resubmit (%d)",
416                                                 hdev->name, urb, -err);
417                 usb_unanchor_urb(urb);
418         }
419 }
420
421 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
422 {
423         int i, offset = 0;
424
425         BT_DBG("len %d mtu %d", len, mtu);
426
427         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
428                                         i++, offset += mtu, len -= mtu) {
429                 urb->iso_frame_desc[i].offset = offset;
430                 urb->iso_frame_desc[i].length = mtu;
431         }
432
433         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
434                 urb->iso_frame_desc[i].offset = offset;
435                 urb->iso_frame_desc[i].length = len;
436                 i++;
437         }
438
439         urb->number_of_packets = i;
440 }
441
442 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
443 {
444         struct btusb_data *data = hdev->driver_data;
445         struct urb *urb;
446         unsigned char *buf;
447         unsigned int pipe;
448         int err, size;
449
450         BT_DBG("%s", hdev->name);
451
452         if (!data->isoc_rx_ep)
453                 return -ENODEV;
454
455         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
456         if (!urb)
457                 return -ENOMEM;
458
459         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
460                                                 BTUSB_MAX_ISOC_FRAMES;
461
462         buf = kmalloc(size, mem_flags);
463         if (!buf) {
464                 usb_free_urb(urb);
465                 return -ENOMEM;
466         }
467
468         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
469
470         urb->dev      = data->udev;
471         urb->pipe     = pipe;
472         urb->context  = hdev;
473         urb->complete = btusb_isoc_complete;
474         urb->interval = data->isoc_rx_ep->bInterval;
475
476         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
477         urb->transfer_buffer = buf;
478         urb->transfer_buffer_length = size;
479
480         __fill_isoc_descriptor(urb, size,
481                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
482
483         usb_anchor_urb(urb, &data->isoc_anchor);
484
485         err = usb_submit_urb(urb, mem_flags);
486         if (err < 0) {
487                 BT_ERR("%s urb %p submission failed (%d)",
488                                                 hdev->name, urb, -err);
489                 usb_unanchor_urb(urb);
490         }
491
492         usb_free_urb(urb);
493
494         return err;
495 }
496
497 static void btusb_tx_complete(struct urb *urb)
498 {
499         struct sk_buff *skb = urb->context;
500         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
501         struct btusb_data *data = hdev->driver_data;
502
503         BT_DBG("%s urb %p status %d count %d", hdev->name,
504                                         urb, urb->status, urb->actual_length);
505
506         if (!test_bit(HCI_RUNNING, &hdev->flags))
507                 goto done;
508
509         if (!urb->status)
510                 hdev->stat.byte_tx += urb->transfer_buffer_length;
511         else
512                 hdev->stat.err_tx++;
513
514 done:
515         spin_lock(&data->txlock);
516         data->tx_in_flight--;
517         spin_unlock(&data->txlock);
518
519         kfree(urb->setup_packet);
520
521         kfree_skb(skb);
522 }
523
524 static void btusb_isoc_tx_complete(struct urb *urb)
525 {
526         struct sk_buff *skb = urb->context;
527         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
528
529         BT_DBG("%s urb %p status %d count %d", hdev->name,
530                                         urb, urb->status, urb->actual_length);
531
532         if (!test_bit(HCI_RUNNING, &hdev->flags))
533                 goto done;
534
535         if (!urb->status)
536                 hdev->stat.byte_tx += urb->transfer_buffer_length;
537         else
538                 hdev->stat.err_tx++;
539
540 done:
541         kfree(urb->setup_packet);
542
543         kfree_skb(skb);
544 }
545
546 static int btusb_open(struct hci_dev *hdev)
547 {
548         struct btusb_data *data = hdev->driver_data;
549         int err;
550
551         BT_DBG("%s", hdev->name);
552
553         err = usb_autopm_get_interface(data->intf);
554         if (err < 0)
555                 return err;
556
557         data->intf->needs_remote_wakeup = 1;
558
559         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
560                 goto done;
561
562         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
563                 goto done;
564
565         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
566         if (err < 0)
567                 goto failed;
568
569         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
570         if (err < 0) {
571                 usb_kill_anchored_urbs(&data->intr_anchor);
572                 goto failed;
573         }
574
575         set_bit(BTUSB_BULK_RUNNING, &data->flags);
576         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
577
578 done:
579         usb_autopm_put_interface(data->intf);
580         return 0;
581
582 failed:
583         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
584         clear_bit(HCI_RUNNING, &hdev->flags);
585         usb_autopm_put_interface(data->intf);
586         return err;
587 }
588
589 static void btusb_stop_traffic(struct btusb_data *data)
590 {
591         usb_kill_anchored_urbs(&data->intr_anchor);
592         usb_kill_anchored_urbs(&data->bulk_anchor);
593         usb_kill_anchored_urbs(&data->isoc_anchor);
594 }
595
596 static int btusb_close(struct hci_dev *hdev)
597 {
598         struct btusb_data *data = hdev->driver_data;
599         int err;
600
601         BT_DBG("%s", hdev->name);
602
603         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
604                 return 0;
605
606         cancel_work_sync(&data->work);
607         cancel_work_sync(&data->waker);
608
609         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
610         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
611         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
612
613         btusb_stop_traffic(data);
614         err = usb_autopm_get_interface(data->intf);
615         if (err < 0)
616                 goto failed;
617
618         data->intf->needs_remote_wakeup = 0;
619         usb_autopm_put_interface(data->intf);
620
621 failed:
622         usb_scuttle_anchored_urbs(&data->deferred);
623         return 0;
624 }
625
626 static int btusb_flush(struct hci_dev *hdev)
627 {
628         struct btusb_data *data = hdev->driver_data;
629
630         BT_DBG("%s", hdev->name);
631
632         usb_kill_anchored_urbs(&data->tx_anchor);
633
634         return 0;
635 }
636
637 static int btusb_send_frame(struct sk_buff *skb)
638 {
639         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
640         struct btusb_data *data = hdev->driver_data;
641         struct usb_ctrlrequest *dr;
642         struct urb *urb;
643         unsigned int pipe;
644         int err;
645
646         BT_DBG("%s", hdev->name);
647
648         if (!test_bit(HCI_RUNNING, &hdev->flags))
649                 return -EBUSY;
650
651         switch (bt_cb(skb)->pkt_type) {
652         case HCI_COMMAND_PKT:
653                 urb = usb_alloc_urb(0, GFP_ATOMIC);
654                 if (!urb)
655                         return -ENOMEM;
656
657                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
658                 if (!dr) {
659                         usb_free_urb(urb);
660                         return -ENOMEM;
661                 }
662
663                 dr->bRequestType = data->cmdreq_type;
664                 dr->bRequest     = 0;
665                 dr->wIndex       = 0;
666                 dr->wValue       = 0;
667                 dr->wLength      = __cpu_to_le16(skb->len);
668
669                 pipe = usb_sndctrlpipe(data->udev, 0x00);
670
671                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
672                                 skb->data, skb->len, btusb_tx_complete, skb);
673
674                 hdev->stat.cmd_tx++;
675                 break;
676
677         case HCI_ACLDATA_PKT:
678                 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
679                         return -ENODEV;
680
681                 urb = usb_alloc_urb(0, GFP_ATOMIC);
682                 if (!urb)
683                         return -ENOMEM;
684
685                 pipe = usb_sndbulkpipe(data->udev,
686                                         data->bulk_tx_ep->bEndpointAddress);
687
688                 usb_fill_bulk_urb(urb, data->udev, pipe,
689                                 skb->data, skb->len, btusb_tx_complete, skb);
690
691                 hdev->stat.acl_tx++;
692                 break;
693
694         case HCI_SCODATA_PKT:
695                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
696                         return -ENODEV;
697
698                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
699                 if (!urb)
700                         return -ENOMEM;
701
702                 pipe = usb_sndisocpipe(data->udev,
703                                         data->isoc_tx_ep->bEndpointAddress);
704
705                 urb->dev      = data->udev;
706                 urb->pipe     = pipe;
707                 urb->context  = skb;
708                 urb->complete = btusb_isoc_tx_complete;
709                 urb->interval = data->isoc_tx_ep->bInterval;
710
711                 urb->transfer_flags  = URB_ISO_ASAP;
712                 urb->transfer_buffer = skb->data;
713                 urb->transfer_buffer_length = skb->len;
714
715                 __fill_isoc_descriptor(urb, skb->len,
716                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
717
718                 hdev->stat.sco_tx++;
719                 goto skip_waking;
720
721         default:
722                 return -EILSEQ;
723         }
724
725         err = inc_tx(data);
726         if (err) {
727                 usb_anchor_urb(urb, &data->deferred);
728                 schedule_work(&data->waker);
729                 err = 0;
730                 goto done;
731         }
732
733 skip_waking:
734         usb_anchor_urb(urb, &data->tx_anchor);
735
736         err = usb_submit_urb(urb, GFP_ATOMIC);
737         if (err < 0) {
738                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
739                 kfree(urb->setup_packet);
740                 usb_unanchor_urb(urb);
741         } else {
742                 usb_mark_last_busy(data->udev);
743         }
744
745         usb_free_urb(urb);
746
747 done:
748         return err;
749 }
750
751 static void btusb_destruct(struct hci_dev *hdev)
752 {
753         struct btusb_data *data = hdev->driver_data;
754
755         BT_DBG("%s", hdev->name);
756
757         kfree(data);
758 }
759
760 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
761 {
762         struct btusb_data *data = hdev->driver_data;
763
764         BT_DBG("%s evt %d", hdev->name, evt);
765
766         if (hdev->conn_hash.sco_num != data->sco_num) {
767                 data->sco_num = hdev->conn_hash.sco_num;
768                 schedule_work(&data->work);
769         }
770 }
771
772 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
773 {
774         struct btusb_data *data = hdev->driver_data;
775         struct usb_interface *intf = data->isoc;
776         struct usb_endpoint_descriptor *ep_desc;
777         int i, err;
778
779         if (!data->isoc)
780                 return -ENODEV;
781
782         err = usb_set_interface(data->udev, 1, altsetting);
783         if (err < 0) {
784                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
785                 return err;
786         }
787
788         data->isoc_altsetting = altsetting;
789
790         data->isoc_tx_ep = NULL;
791         data->isoc_rx_ep = NULL;
792
793         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
794                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
795
796                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
797                         data->isoc_tx_ep = ep_desc;
798                         continue;
799                 }
800
801                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
802                         data->isoc_rx_ep = ep_desc;
803                         continue;
804                 }
805         }
806
807         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
808                 BT_ERR("%s invalid SCO descriptors", hdev->name);
809                 return -ENODEV;
810         }
811
812         return 0;
813 }
814
815 static void btusb_work(struct work_struct *work)
816 {
817         struct btusb_data *data = container_of(work, struct btusb_data, work);
818         struct hci_dev *hdev = data->hdev;
819         int err;
820
821         if (hdev->conn_hash.sco_num > 0) {
822                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
823                         err = usb_autopm_get_interface(data->isoc);
824                         if (err < 0) {
825                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
826                                 usb_kill_anchored_urbs(&data->isoc_anchor);
827                                 return;
828                         }
829
830                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
831                 }
832                 if (data->isoc_altsetting != 2) {
833                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
834                         usb_kill_anchored_urbs(&data->isoc_anchor);
835
836                         if (__set_isoc_interface(hdev, 2) < 0)
837                                 return;
838                 }
839
840                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
841                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
842                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
843                         else
844                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
845                 }
846         } else {
847                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
848                 usb_kill_anchored_urbs(&data->isoc_anchor);
849
850                 __set_isoc_interface(hdev, 0);
851                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
852                         usb_autopm_put_interface(data->isoc);
853         }
854 }
855
856 static void btusb_waker(struct work_struct *work)
857 {
858         struct btusb_data *data = container_of(work, struct btusb_data, waker);
859         int err;
860
861         err = usb_autopm_get_interface(data->intf);
862         if (err < 0)
863                 return;
864
865         usb_autopm_put_interface(data->intf);
866 }
867
868 static int btusb_probe(struct usb_interface *intf,
869                                 const struct usb_device_id *id)
870 {
871         struct usb_endpoint_descriptor *ep_desc;
872         struct btusb_data *data;
873         struct hci_dev *hdev;
874         int i, err;
875
876         BT_DBG("intf %p id %p", intf, id);
877
878         /* interface numbers are hardcoded in the spec */
879         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
880                 return -ENODEV;
881
882         if (!id->driver_info) {
883                 const struct usb_device_id *match;
884                 match = usb_match_id(intf, blacklist_table);
885                 if (match)
886                         id = match;
887         }
888
889         if (id->driver_info == BTUSB_IGNORE)
890                 return -ENODEV;
891
892         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
893                 return -ENODEV;
894
895         if (ignore_csr && id->driver_info & BTUSB_CSR)
896                 return -ENODEV;
897
898         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
899                 return -ENODEV;
900
901         data = kzalloc(sizeof(*data), GFP_KERNEL);
902         if (!data)
903                 return -ENOMEM;
904
905         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
906                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
907
908                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
909                         data->intr_ep = ep_desc;
910                         continue;
911                 }
912
913                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
914                         data->bulk_tx_ep = ep_desc;
915                         continue;
916                 }
917
918                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
919                         data->bulk_rx_ep = ep_desc;
920                         continue;
921                 }
922         }
923
924         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
925                 kfree(data);
926                 return -ENODEV;
927         }
928
929         data->cmdreq_type = USB_TYPE_CLASS;
930
931         data->udev = interface_to_usbdev(intf);
932         data->intf = intf;
933
934         spin_lock_init(&data->lock);
935
936         INIT_WORK(&data->work, btusb_work);
937         INIT_WORK(&data->waker, btusb_waker);
938         spin_lock_init(&data->txlock);
939
940         init_usb_anchor(&data->tx_anchor);
941         init_usb_anchor(&data->intr_anchor);
942         init_usb_anchor(&data->bulk_anchor);
943         init_usb_anchor(&data->isoc_anchor);
944         init_usb_anchor(&data->deferred);
945
946         hdev = hci_alloc_dev();
947         if (!hdev) {
948                 kfree(data);
949                 return -ENOMEM;
950         }
951
952         hdev->bus = HCI_USB;
953         hdev->driver_data = data;
954
955         data->hdev = hdev;
956
957         SET_HCIDEV_DEV(hdev, &intf->dev);
958
959         hdev->open     = btusb_open;
960         hdev->close    = btusb_close;
961         hdev->flush    = btusb_flush;
962         hdev->send     = btusb_send_frame;
963         hdev->destruct = btusb_destruct;
964         hdev->notify   = btusb_notify;
965
966         hdev->owner = THIS_MODULE;
967
968         /* Interface numbers are hardcoded in the specification */
969         data->isoc = usb_ifnum_to_if(data->udev, 1);
970
971         if (!reset)
972                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
973
974         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
975                 if (!disable_scofix)
976                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
977         }
978
979         if (id->driver_info & BTUSB_BROKEN_ISOC)
980                 data->isoc = NULL;
981
982         if (id->driver_info & BTUSB_DIGIANSWER) {
983                 data->cmdreq_type = USB_TYPE_VENDOR;
984                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
985         }
986
987         if (id->driver_info & BTUSB_CSR) {
988                 struct usb_device *udev = data->udev;
989
990                 /* Old firmware would otherwise execute USB reset */
991                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
992                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
993         }
994
995         if (id->driver_info & BTUSB_SNIFFER) {
996                 struct usb_device *udev = data->udev;
997
998                 /* New sniffer firmware has crippled HCI interface */
999                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1000                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1001
1002                 data->isoc = NULL;
1003         }
1004
1005         if (id->driver_info & BTUSB_BCM92035) {
1006                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1007                 struct sk_buff *skb;
1008
1009                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1010                 if (skb) {
1011                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1012                         skb_queue_tail(&hdev->driver_init, skb);
1013                 }
1014         }
1015
1016         if (data->isoc) {
1017                 err = usb_driver_claim_interface(&btusb_driver,
1018                                                         data->isoc, data);
1019                 if (err < 0) {
1020                         hci_free_dev(hdev);
1021                         kfree(data);
1022                         return err;
1023                 }
1024         }
1025
1026         err = hci_register_dev(hdev);
1027         if (err < 0) {
1028                 hci_free_dev(hdev);
1029                 kfree(data);
1030                 return err;
1031         }
1032
1033         usb_set_intfdata(intf, data);
1034
1035         usb_enable_autosuspend(interface_to_usbdev(intf));
1036
1037         return 0;
1038 }
1039
1040 static void btusb_disconnect(struct usb_interface *intf)
1041 {
1042         struct btusb_data *data = usb_get_intfdata(intf);
1043         struct hci_dev *hdev;
1044
1045         BT_DBG("intf %p", intf);
1046
1047         if (!data)
1048                 return;
1049
1050         hdev = data->hdev;
1051
1052         __hci_dev_hold(hdev);
1053
1054         usb_set_intfdata(data->intf, NULL);
1055
1056         if (data->isoc)
1057                 usb_set_intfdata(data->isoc, NULL);
1058
1059         hci_unregister_dev(hdev);
1060
1061         if (intf == data->isoc)
1062                 usb_driver_release_interface(&btusb_driver, data->intf);
1063         else if (data->isoc)
1064                 usb_driver_release_interface(&btusb_driver, data->isoc);
1065
1066         __hci_dev_put(hdev);
1067
1068         hci_free_dev(hdev);
1069 }
1070
1071 #ifdef CONFIG_PM
1072 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1073 {
1074         struct btusb_data *data = usb_get_intfdata(intf);
1075
1076         BT_DBG("intf %p", intf);
1077
1078         if (data->suspend_count++)
1079                 return 0;
1080
1081         spin_lock_irq(&data->txlock);
1082         if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1083                 set_bit(BTUSB_SUSPENDING, &data->flags);
1084                 spin_unlock_irq(&data->txlock);
1085         } else {
1086                 spin_unlock_irq(&data->txlock);
1087                 data->suspend_count--;
1088                 return -EBUSY;
1089         }
1090
1091         cancel_work_sync(&data->work);
1092
1093         btusb_stop_traffic(data);
1094         usb_kill_anchored_urbs(&data->tx_anchor);
1095
1096         return 0;
1097 }
1098
1099 static void play_deferred(struct btusb_data *data)
1100 {
1101         struct urb *urb;
1102         int err;
1103
1104         while ((urb = usb_get_from_anchor(&data->deferred))) {
1105                 err = usb_submit_urb(urb, GFP_ATOMIC);
1106                 if (err < 0)
1107                         break;
1108
1109                 data->tx_in_flight++;
1110         }
1111         usb_scuttle_anchored_urbs(&data->deferred);
1112 }
1113
1114 static int btusb_resume(struct usb_interface *intf)
1115 {
1116         struct btusb_data *data = usb_get_intfdata(intf);
1117         struct hci_dev *hdev = data->hdev;
1118         int err = 0;
1119
1120         BT_DBG("intf %p", intf);
1121
1122         if (--data->suspend_count)
1123                 return 0;
1124
1125         if (!test_bit(HCI_RUNNING, &hdev->flags))
1126                 goto done;
1127
1128         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1129                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1130                 if (err < 0) {
1131                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1132                         goto failed;
1133                 }
1134         }
1135
1136         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1137                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1138                 if (err < 0) {
1139                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1140                         goto failed;
1141                 }
1142
1143                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1144         }
1145
1146         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1147                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1148                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1149                 else
1150                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1151         }
1152
1153         spin_lock_irq(&data->txlock);
1154         play_deferred(data);
1155         clear_bit(BTUSB_SUSPENDING, &data->flags);
1156         spin_unlock_irq(&data->txlock);
1157         schedule_work(&data->work);
1158
1159         return 0;
1160
1161 failed:
1162         usb_scuttle_anchored_urbs(&data->deferred);
1163 done:
1164         spin_lock_irq(&data->txlock);
1165         clear_bit(BTUSB_SUSPENDING, &data->flags);
1166         spin_unlock_irq(&data->txlock);
1167
1168         return err;
1169 }
1170 #endif
1171
1172 static struct usb_driver btusb_driver = {
1173         .name           = "btusb",
1174         .probe          = btusb_probe,
1175         .disconnect     = btusb_disconnect,
1176 #ifdef CONFIG_PM
1177         .suspend        = btusb_suspend,
1178         .resume         = btusb_resume,
1179 #endif
1180         .id_table       = btusb_table,
1181         .supports_autosuspend = 1,
1182 };
1183
1184 static int __init btusb_init(void)
1185 {
1186         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1187
1188         return usb_register(&btusb_driver);
1189 }
1190
1191 static void __exit btusb_exit(void)
1192 {
1193         usb_deregister(&btusb_driver);
1194 }
1195
1196 module_init(btusb_init);
1197 module_exit(btusb_exit);
1198
1199 module_param(ignore_dga, bool, 0644);
1200 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1201
1202 module_param(ignore_csr, bool, 0644);
1203 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1204
1205 module_param(ignore_sniffer, bool, 0644);
1206 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1207
1208 module_param(disable_scofix, bool, 0644);
1209 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1210
1211 module_param(force_scofix, bool, 0644);
1212 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1213
1214 module_param(reset, bool, 0644);
1215 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1216
1217 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1218 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1219 MODULE_VERSION(VERSION);
1220 MODULE_LICENSE("GPL");