Bluetooth: Add MacBookAir4,1 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 #define BTUSB_ATH3012           0x80
58
59 static struct usb_device_id btusb_table[] = {
60         /* Generic Bluetooth USB device */
61         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
62
63         /* Apple MacBookPro 7,1 */
64         { USB_DEVICE(0x05ac, 0x8213) },
65
66         /* Apple iMac11,1 */
67         { USB_DEVICE(0x05ac, 0x8215) },
68
69         /* Apple MacBookPro6,2 */
70         { USB_DEVICE(0x05ac, 0x8218) },
71
72         /* Apple MacBookAir3,1, MacBookAir3,2 */
73         { USB_DEVICE(0x05ac, 0x821b) },
74
75         /* Apple MacBookAir4,1 */
76         { USB_DEVICE(0x05ac, 0x821f) },
77
78         /* Apple MacBookPro8,2 */
79         { USB_DEVICE(0x05ac, 0x821a) },
80
81         /* AVM BlueFRITZ! USB v2.0 */
82         { USB_DEVICE(0x057c, 0x3800) },
83
84         /* Bluetooth Ultraport Module from IBM */
85         { USB_DEVICE(0x04bf, 0x030a) },
86
87         /* ALPS Modules with non-standard id */
88         { USB_DEVICE(0x044e, 0x3001) },
89         { USB_DEVICE(0x044e, 0x3002) },
90
91         /* Ericsson with non-standard id */
92         { USB_DEVICE(0x0bdb, 0x1002) },
93
94         /* Canyon CN-BTU1 with HID interfaces */
95         { USB_DEVICE(0x0c10, 0x0000) },
96
97         { }     /* Terminating entry */
98 };
99
100 MODULE_DEVICE_TABLE(usb, btusb_table);
101
102 static struct usb_device_id blacklist_table[] = {
103         /* CSR BlueCore devices */
104         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
105
106         /* Broadcom BCM2033 without firmware */
107         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
108
109         /* Atheros 3011 with sflash firmware */
110         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
111         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
112         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
113
114         /* Atheros AR9285 Malbec with sflash firmware */
115         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
116
117         /* Atheros 3012 with sflash firmware */
118         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
119
120         /* Atheros AR5BBU12 with sflash firmware */
121         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
122
123         /* Broadcom BCM2035 */
124         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
125         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
126         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
127
128         /* Broadcom BCM2045 */
129         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
130         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
131
132         /* IBM/Lenovo ThinkPad with Broadcom chip */
133         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
134         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
135
136         /* HP laptop with Broadcom chip */
137         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
138
139         /* Dell laptop with Broadcom chip */
140         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
141
142         /* Dell Wireless 370 and 410 devices */
143         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
144         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
145
146         /* Belkin F8T012 and F8T013 devices */
147         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
148         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
149
150         /* Asus WL-BTD202 device */
151         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
152
153         /* Kensington Bluetooth USB adapter */
154         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
155
156         /* RTX Telecom based adapters with buggy SCO support */
157         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
158         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
159
160         /* CONWISE Technology based adapters with buggy SCO support */
161         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
162
163         /* Digianswer devices */
164         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
165         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
166
167         /* CSR BlueCore Bluetooth Sniffer */
168         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
169
170         /* Frontline ComProbe Bluetooth Sniffer */
171         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
172
173         { }     /* Terminating entry */
174 };
175
176 #define BTUSB_MAX_ISOC_FRAMES   10
177
178 #define BTUSB_INTR_RUNNING      0
179 #define BTUSB_BULK_RUNNING      1
180 #define BTUSB_ISOC_RUNNING      2
181 #define BTUSB_SUSPENDING        3
182 #define BTUSB_DID_ISO_RESUME    4
183
184 struct btusb_data {
185         struct hci_dev       *hdev;
186         struct usb_device    *udev;
187         struct usb_interface *intf;
188         struct usb_interface *isoc;
189
190         spinlock_t lock;
191
192         unsigned long flags;
193
194         struct work_struct work;
195         struct work_struct waker;
196
197         struct usb_anchor tx_anchor;
198         struct usb_anchor intr_anchor;
199         struct usb_anchor bulk_anchor;
200         struct usb_anchor isoc_anchor;
201         struct usb_anchor deferred;
202         int tx_in_flight;
203         spinlock_t txlock;
204
205         struct usb_endpoint_descriptor *intr_ep;
206         struct usb_endpoint_descriptor *bulk_tx_ep;
207         struct usb_endpoint_descriptor *bulk_rx_ep;
208         struct usb_endpoint_descriptor *isoc_tx_ep;
209         struct usb_endpoint_descriptor *isoc_rx_ep;
210
211         __u8 cmdreq_type;
212
213         unsigned int sco_num;
214         int isoc_altsetting;
215         int suspend_count;
216 };
217
218 static int inc_tx(struct btusb_data *data)
219 {
220         unsigned long flags;
221         int rv;
222
223         spin_lock_irqsave(&data->txlock, flags);
224         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
225         if (!rv)
226                 data->tx_in_flight++;
227         spin_unlock_irqrestore(&data->txlock, flags);
228
229         return rv;
230 }
231
232 static void btusb_intr_complete(struct urb *urb)
233 {
234         struct hci_dev *hdev = urb->context;
235         struct btusb_data *data = hdev->driver_data;
236         int err;
237
238         BT_DBG("%s urb %p status %d count %d", hdev->name,
239                                         urb, urb->status, urb->actual_length);
240
241         if (!test_bit(HCI_RUNNING, &hdev->flags))
242                 return;
243
244         if (urb->status == 0) {
245                 hdev->stat.byte_rx += urb->actual_length;
246
247                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
248                                                 urb->transfer_buffer,
249                                                 urb->actual_length) < 0) {
250                         BT_ERR("%s corrupted event packet", hdev->name);
251                         hdev->stat.err_rx++;
252                 }
253         }
254
255         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
256                 return;
257
258         usb_mark_last_busy(data->udev);
259         usb_anchor_urb(urb, &data->intr_anchor);
260
261         err = usb_submit_urb(urb, GFP_ATOMIC);
262         if (err < 0) {
263                 /* -EPERM: urb is being killed;
264                  * -ENODEV: device got disconnected */
265                 if (err != -EPERM && err != -ENODEV)
266                         BT_ERR("%s urb %p failed to resubmit (%d)",
267                                                 hdev->name, urb, -err);
268                 usb_unanchor_urb(urb);
269         }
270 }
271
272 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
273 {
274         struct btusb_data *data = hdev->driver_data;
275         struct urb *urb;
276         unsigned char *buf;
277         unsigned int pipe;
278         int err, size;
279
280         BT_DBG("%s", hdev->name);
281
282         if (!data->intr_ep)
283                 return -ENODEV;
284
285         urb = usb_alloc_urb(0, mem_flags);
286         if (!urb)
287                 return -ENOMEM;
288
289         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
290
291         buf = kmalloc(size, mem_flags);
292         if (!buf) {
293                 usb_free_urb(urb);
294                 return -ENOMEM;
295         }
296
297         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
298
299         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
300                                                 btusb_intr_complete, hdev,
301                                                 data->intr_ep->bInterval);
302
303         urb->transfer_flags |= URB_FREE_BUFFER;
304
305         usb_anchor_urb(urb, &data->intr_anchor);
306
307         err = usb_submit_urb(urb, mem_flags);
308         if (err < 0) {
309                 BT_ERR("%s urb %p submission failed (%d)",
310                                                 hdev->name, urb, -err);
311                 usb_unanchor_urb(urb);
312         }
313
314         usb_free_urb(urb);
315
316         return err;
317 }
318
319 static void btusb_bulk_complete(struct urb *urb)
320 {
321         struct hci_dev *hdev = urb->context;
322         struct btusb_data *data = hdev->driver_data;
323         int err;
324
325         BT_DBG("%s urb %p status %d count %d", hdev->name,
326                                         urb, urb->status, urb->actual_length);
327
328         if (!test_bit(HCI_RUNNING, &hdev->flags))
329                 return;
330
331         if (urb->status == 0) {
332                 hdev->stat.byte_rx += urb->actual_length;
333
334                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
335                                                 urb->transfer_buffer,
336                                                 urb->actual_length) < 0) {
337                         BT_ERR("%s corrupted ACL packet", hdev->name);
338                         hdev->stat.err_rx++;
339                 }
340         }
341
342         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
343                 return;
344
345         usb_anchor_urb(urb, &data->bulk_anchor);
346         usb_mark_last_busy(data->udev);
347
348         err = usb_submit_urb(urb, GFP_ATOMIC);
349         if (err < 0) {
350                 /* -EPERM: urb is being killed;
351                  * -ENODEV: device got disconnected */
352                 if (err != -EPERM && err != -ENODEV)
353                         BT_ERR("%s urb %p failed to resubmit (%d)",
354                                                 hdev->name, urb, -err);
355                 usb_unanchor_urb(urb);
356         }
357 }
358
359 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
360 {
361         struct btusb_data *data = hdev->driver_data;
362         struct urb *urb;
363         unsigned char *buf;
364         unsigned int pipe;
365         int err, size = HCI_MAX_FRAME_SIZE;
366
367         BT_DBG("%s", hdev->name);
368
369         if (!data->bulk_rx_ep)
370                 return -ENODEV;
371
372         urb = usb_alloc_urb(0, mem_flags);
373         if (!urb)
374                 return -ENOMEM;
375
376         buf = kmalloc(size, mem_flags);
377         if (!buf) {
378                 usb_free_urb(urb);
379                 return -ENOMEM;
380         }
381
382         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
383
384         usb_fill_bulk_urb(urb, data->udev, pipe,
385                                         buf, size, btusb_bulk_complete, hdev);
386
387         urb->transfer_flags |= URB_FREE_BUFFER;
388
389         usb_mark_last_busy(data->udev);
390         usb_anchor_urb(urb, &data->bulk_anchor);
391
392         err = usb_submit_urb(urb, mem_flags);
393         if (err < 0) {
394                 BT_ERR("%s urb %p submission failed (%d)",
395                                                 hdev->name, urb, -err);
396                 usb_unanchor_urb(urb);
397         }
398
399         usb_free_urb(urb);
400
401         return err;
402 }
403
404 static void btusb_isoc_complete(struct urb *urb)
405 {
406         struct hci_dev *hdev = urb->context;
407         struct btusb_data *data = hdev->driver_data;
408         int i, err;
409
410         BT_DBG("%s urb %p status %d count %d", hdev->name,
411                                         urb, urb->status, urb->actual_length);
412
413         if (!test_bit(HCI_RUNNING, &hdev->flags))
414                 return;
415
416         if (urb->status == 0) {
417                 for (i = 0; i < urb->number_of_packets; i++) {
418                         unsigned int offset = urb->iso_frame_desc[i].offset;
419                         unsigned int length = urb->iso_frame_desc[i].actual_length;
420
421                         if (urb->iso_frame_desc[i].status)
422                                 continue;
423
424                         hdev->stat.byte_rx += length;
425
426                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
427                                                 urb->transfer_buffer + offset,
428                                                                 length) < 0) {
429                                 BT_ERR("%s corrupted SCO packet", hdev->name);
430                                 hdev->stat.err_rx++;
431                         }
432                 }
433         }
434
435         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
436                 return;
437
438         usb_anchor_urb(urb, &data->isoc_anchor);
439
440         err = usb_submit_urb(urb, GFP_ATOMIC);
441         if (err < 0) {
442                 /* -EPERM: urb is being killed;
443                  * -ENODEV: device got disconnected */
444                 if (err != -EPERM && err != -ENODEV)
445                         BT_ERR("%s urb %p failed to resubmit (%d)",
446                                                 hdev->name, urb, -err);
447                 usb_unanchor_urb(urb);
448         }
449 }
450
451 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
452 {
453         int i, offset = 0;
454
455         BT_DBG("len %d mtu %d", len, mtu);
456
457         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
458                                         i++, offset += mtu, len -= mtu) {
459                 urb->iso_frame_desc[i].offset = offset;
460                 urb->iso_frame_desc[i].length = mtu;
461         }
462
463         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
464                 urb->iso_frame_desc[i].offset = offset;
465                 urb->iso_frame_desc[i].length = len;
466                 i++;
467         }
468
469         urb->number_of_packets = i;
470 }
471
472 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
473 {
474         struct btusb_data *data = hdev->driver_data;
475         struct urb *urb;
476         unsigned char *buf;
477         unsigned int pipe;
478         int err, size;
479
480         BT_DBG("%s", hdev->name);
481
482         if (!data->isoc_rx_ep)
483                 return -ENODEV;
484
485         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
486         if (!urb)
487                 return -ENOMEM;
488
489         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
490                                                 BTUSB_MAX_ISOC_FRAMES;
491
492         buf = kmalloc(size, mem_flags);
493         if (!buf) {
494                 usb_free_urb(urb);
495                 return -ENOMEM;
496         }
497
498         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
499
500         urb->dev      = data->udev;
501         urb->pipe     = pipe;
502         urb->context  = hdev;
503         urb->complete = btusb_isoc_complete;
504         urb->interval = data->isoc_rx_ep->bInterval;
505
506         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
507         urb->transfer_buffer = buf;
508         urb->transfer_buffer_length = size;
509
510         __fill_isoc_descriptor(urb, size,
511                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
512
513         usb_anchor_urb(urb, &data->isoc_anchor);
514
515         err = usb_submit_urb(urb, mem_flags);
516         if (err < 0) {
517                 BT_ERR("%s urb %p submission failed (%d)",
518                                                 hdev->name, urb, -err);
519                 usb_unanchor_urb(urb);
520         }
521
522         usb_free_urb(urb);
523
524         return err;
525 }
526
527 static void btusb_tx_complete(struct urb *urb)
528 {
529         struct sk_buff *skb = urb->context;
530         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
531         struct btusb_data *data = hdev->driver_data;
532
533         BT_DBG("%s urb %p status %d count %d", hdev->name,
534                                         urb, urb->status, urb->actual_length);
535
536         if (!test_bit(HCI_RUNNING, &hdev->flags))
537                 goto done;
538
539         if (!urb->status)
540                 hdev->stat.byte_tx += urb->transfer_buffer_length;
541         else
542                 hdev->stat.err_tx++;
543
544 done:
545         spin_lock(&data->txlock);
546         data->tx_in_flight--;
547         spin_unlock(&data->txlock);
548
549         kfree(urb->setup_packet);
550
551         kfree_skb(skb);
552 }
553
554 static void btusb_isoc_tx_complete(struct urb *urb)
555 {
556         struct sk_buff *skb = urb->context;
557         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
558
559         BT_DBG("%s urb %p status %d count %d", hdev->name,
560                                         urb, urb->status, urb->actual_length);
561
562         if (!test_bit(HCI_RUNNING, &hdev->flags))
563                 goto done;
564
565         if (!urb->status)
566                 hdev->stat.byte_tx += urb->transfer_buffer_length;
567         else
568                 hdev->stat.err_tx++;
569
570 done:
571         kfree(urb->setup_packet);
572
573         kfree_skb(skb);
574 }
575
576 static int btusb_open(struct hci_dev *hdev)
577 {
578         struct btusb_data *data = hdev->driver_data;
579         int err;
580
581         BT_DBG("%s", hdev->name);
582
583         err = usb_autopm_get_interface(data->intf);
584         if (err < 0)
585                 return err;
586
587         data->intf->needs_remote_wakeup = 1;
588
589         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
590                 goto done;
591
592         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
593                 goto done;
594
595         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
596         if (err < 0)
597                 goto failed;
598
599         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
600         if (err < 0) {
601                 usb_kill_anchored_urbs(&data->intr_anchor);
602                 goto failed;
603         }
604
605         set_bit(BTUSB_BULK_RUNNING, &data->flags);
606         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
607
608 done:
609         usb_autopm_put_interface(data->intf);
610         return 0;
611
612 failed:
613         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
614         clear_bit(HCI_RUNNING, &hdev->flags);
615         usb_autopm_put_interface(data->intf);
616         return err;
617 }
618
619 static void btusb_stop_traffic(struct btusb_data *data)
620 {
621         usb_kill_anchored_urbs(&data->intr_anchor);
622         usb_kill_anchored_urbs(&data->bulk_anchor);
623         usb_kill_anchored_urbs(&data->isoc_anchor);
624 }
625
626 static int btusb_close(struct hci_dev *hdev)
627 {
628         struct btusb_data *data = hdev->driver_data;
629         int err;
630
631         BT_DBG("%s", hdev->name);
632
633         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
634                 return 0;
635
636         cancel_work_sync(&data->work);
637         cancel_work_sync(&data->waker);
638
639         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
640         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
641         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
642
643         btusb_stop_traffic(data);
644         err = usb_autopm_get_interface(data->intf);
645         if (err < 0)
646                 goto failed;
647
648         data->intf->needs_remote_wakeup = 0;
649         usb_autopm_put_interface(data->intf);
650
651 failed:
652         usb_scuttle_anchored_urbs(&data->deferred);
653         return 0;
654 }
655
656 static int btusb_flush(struct hci_dev *hdev)
657 {
658         struct btusb_data *data = hdev->driver_data;
659
660         BT_DBG("%s", hdev->name);
661
662         usb_kill_anchored_urbs(&data->tx_anchor);
663
664         return 0;
665 }
666
667 static int btusb_send_frame(struct sk_buff *skb)
668 {
669         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
670         struct btusb_data *data = hdev->driver_data;
671         struct usb_ctrlrequest *dr;
672         struct urb *urb;
673         unsigned int pipe;
674         int err;
675
676         BT_DBG("%s", hdev->name);
677
678         if (!test_bit(HCI_RUNNING, &hdev->flags))
679                 return -EBUSY;
680
681         switch (bt_cb(skb)->pkt_type) {
682         case HCI_COMMAND_PKT:
683                 urb = usb_alloc_urb(0, GFP_ATOMIC);
684                 if (!urb)
685                         return -ENOMEM;
686
687                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
688                 if (!dr) {
689                         usb_free_urb(urb);
690                         return -ENOMEM;
691                 }
692
693                 dr->bRequestType = data->cmdreq_type;
694                 dr->bRequest     = 0;
695                 dr->wIndex       = 0;
696                 dr->wValue       = 0;
697                 dr->wLength      = __cpu_to_le16(skb->len);
698
699                 pipe = usb_sndctrlpipe(data->udev, 0x00);
700
701                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
702                                 skb->data, skb->len, btusb_tx_complete, skb);
703
704                 hdev->stat.cmd_tx++;
705                 break;
706
707         case HCI_ACLDATA_PKT:
708                 if (!data->bulk_tx_ep || (hdev->conn_hash.acl_num < 1 &&
709                                                 hdev->conn_hash.le_num < 1))
710                         return -ENODEV;
711
712                 urb = usb_alloc_urb(0, GFP_ATOMIC);
713                 if (!urb)
714                         return -ENOMEM;
715
716                 pipe = usb_sndbulkpipe(data->udev,
717                                         data->bulk_tx_ep->bEndpointAddress);
718
719                 usb_fill_bulk_urb(urb, data->udev, pipe,
720                                 skb->data, skb->len, btusb_tx_complete, skb);
721
722                 hdev->stat.acl_tx++;
723                 break;
724
725         case HCI_SCODATA_PKT:
726                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
727                         return -ENODEV;
728
729                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
730                 if (!urb)
731                         return -ENOMEM;
732
733                 pipe = usb_sndisocpipe(data->udev,
734                                         data->isoc_tx_ep->bEndpointAddress);
735
736                 usb_fill_int_urb(urb, data->udev, pipe,
737                                 skb->data, skb->len, btusb_isoc_tx_complete,
738                                 skb, data->isoc_tx_ep->bInterval);
739
740                 urb->transfer_flags  = URB_ISO_ASAP;
741
742                 __fill_isoc_descriptor(urb, skb->len,
743                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
744
745                 hdev->stat.sco_tx++;
746                 goto skip_waking;
747
748         default:
749                 return -EILSEQ;
750         }
751
752         err = inc_tx(data);
753         if (err) {
754                 usb_anchor_urb(urb, &data->deferred);
755                 schedule_work(&data->waker);
756                 err = 0;
757                 goto done;
758         }
759
760 skip_waking:
761         usb_anchor_urb(urb, &data->tx_anchor);
762
763         err = usb_submit_urb(urb, GFP_ATOMIC);
764         if (err < 0) {
765                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
766                 kfree(urb->setup_packet);
767                 usb_unanchor_urb(urb);
768         } else {
769                 usb_mark_last_busy(data->udev);
770         }
771
772         usb_free_urb(urb);
773
774 done:
775         return err;
776 }
777
778 static void btusb_destruct(struct hci_dev *hdev)
779 {
780         struct btusb_data *data = hdev->driver_data;
781
782         BT_DBG("%s", hdev->name);
783
784         kfree(data);
785 }
786
787 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
788 {
789         struct btusb_data *data = hdev->driver_data;
790
791         BT_DBG("%s evt %d", hdev->name, evt);
792
793         if (hdev->conn_hash.sco_num != data->sco_num) {
794                 data->sco_num = hdev->conn_hash.sco_num;
795                 schedule_work(&data->work);
796         }
797 }
798
799 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
800 {
801         struct btusb_data *data = hdev->driver_data;
802         struct usb_interface *intf = data->isoc;
803         struct usb_endpoint_descriptor *ep_desc;
804         int i, err;
805
806         if (!data->isoc)
807                 return -ENODEV;
808
809         err = usb_set_interface(data->udev, 1, altsetting);
810         if (err < 0) {
811                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
812                 return err;
813         }
814
815         data->isoc_altsetting = altsetting;
816
817         data->isoc_tx_ep = NULL;
818         data->isoc_rx_ep = NULL;
819
820         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
821                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
822
823                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
824                         data->isoc_tx_ep = ep_desc;
825                         continue;
826                 }
827
828                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
829                         data->isoc_rx_ep = ep_desc;
830                         continue;
831                 }
832         }
833
834         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
835                 BT_ERR("%s invalid SCO descriptors", hdev->name);
836                 return -ENODEV;
837         }
838
839         return 0;
840 }
841
842 static void btusb_work(struct work_struct *work)
843 {
844         struct btusb_data *data = container_of(work, struct btusb_data, work);
845         struct hci_dev *hdev = data->hdev;
846         int err;
847
848         if (hdev->conn_hash.sco_num > 0) {
849                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
850                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
851                         if (err < 0) {
852                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
853                                 usb_kill_anchored_urbs(&data->isoc_anchor);
854                                 return;
855                         }
856
857                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
858                 }
859                 if (data->isoc_altsetting != 2) {
860                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
861                         usb_kill_anchored_urbs(&data->isoc_anchor);
862
863                         if (__set_isoc_interface(hdev, 2) < 0)
864                                 return;
865                 }
866
867                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
868                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
869                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
870                         else
871                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
872                 }
873         } else {
874                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
875                 usb_kill_anchored_urbs(&data->isoc_anchor);
876
877                 __set_isoc_interface(hdev, 0);
878                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
879                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
880         }
881 }
882
883 static void btusb_waker(struct work_struct *work)
884 {
885         struct btusb_data *data = container_of(work, struct btusb_data, waker);
886         int err;
887
888         err = usb_autopm_get_interface(data->intf);
889         if (err < 0)
890                 return;
891
892         usb_autopm_put_interface(data->intf);
893 }
894
895 static int btusb_probe(struct usb_interface *intf,
896                                 const struct usb_device_id *id)
897 {
898         struct usb_endpoint_descriptor *ep_desc;
899         struct btusb_data *data;
900         struct hci_dev *hdev;
901         int i, err;
902
903         BT_DBG("intf %p id %p", intf, id);
904
905         /* interface numbers are hardcoded in the spec */
906         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
907                 return -ENODEV;
908
909         if (!id->driver_info) {
910                 const struct usb_device_id *match;
911                 match = usb_match_id(intf, blacklist_table);
912                 if (match)
913                         id = match;
914         }
915
916         if (id->driver_info == BTUSB_IGNORE)
917                 return -ENODEV;
918
919         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
920                 return -ENODEV;
921
922         if (ignore_csr && id->driver_info & BTUSB_CSR)
923                 return -ENODEV;
924
925         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
926                 return -ENODEV;
927
928         if (id->driver_info & BTUSB_ATH3012) {
929                 struct usb_device *udev = interface_to_usbdev(intf);
930
931                 /* Old firmware would otherwise let ath3k driver load
932                  * patch and sysconfig files */
933                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
934                         return -ENODEV;
935         }
936
937         data = kzalloc(sizeof(*data), GFP_KERNEL);
938         if (!data)
939                 return -ENOMEM;
940
941         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
942                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
943
944                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
945                         data->intr_ep = ep_desc;
946                         continue;
947                 }
948
949                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
950                         data->bulk_tx_ep = ep_desc;
951                         continue;
952                 }
953
954                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
955                         data->bulk_rx_ep = ep_desc;
956                         continue;
957                 }
958         }
959
960         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
961                 kfree(data);
962                 return -ENODEV;
963         }
964
965         data->cmdreq_type = USB_TYPE_CLASS;
966
967         data->udev = interface_to_usbdev(intf);
968         data->intf = intf;
969
970         spin_lock_init(&data->lock);
971
972         INIT_WORK(&data->work, btusb_work);
973         INIT_WORK(&data->waker, btusb_waker);
974         spin_lock_init(&data->txlock);
975
976         init_usb_anchor(&data->tx_anchor);
977         init_usb_anchor(&data->intr_anchor);
978         init_usb_anchor(&data->bulk_anchor);
979         init_usb_anchor(&data->isoc_anchor);
980         init_usb_anchor(&data->deferred);
981
982         hdev = hci_alloc_dev();
983         if (!hdev) {
984                 kfree(data);
985                 return -ENOMEM;
986         }
987
988         hdev->bus = HCI_USB;
989         hdev->driver_data = data;
990
991         data->hdev = hdev;
992
993         SET_HCIDEV_DEV(hdev, &intf->dev);
994
995         hdev->open     = btusb_open;
996         hdev->close    = btusb_close;
997         hdev->flush    = btusb_flush;
998         hdev->send     = btusb_send_frame;
999         hdev->destruct = btusb_destruct;
1000         hdev->notify   = btusb_notify;
1001
1002         hdev->owner = THIS_MODULE;
1003
1004         /* Interface numbers are hardcoded in the specification */
1005         data->isoc = usb_ifnum_to_if(data->udev, 1);
1006
1007         if (!reset)
1008                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1009
1010         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1011                 if (!disable_scofix)
1012                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1013         }
1014
1015         if (id->driver_info & BTUSB_BROKEN_ISOC)
1016                 data->isoc = NULL;
1017
1018         if (id->driver_info & BTUSB_DIGIANSWER) {
1019                 data->cmdreq_type = USB_TYPE_VENDOR;
1020                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1021         }
1022
1023         if (id->driver_info & BTUSB_CSR) {
1024                 struct usb_device *udev = data->udev;
1025
1026                 /* Old firmware would otherwise execute USB reset */
1027                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1028                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1029         }
1030
1031         if (id->driver_info & BTUSB_SNIFFER) {
1032                 struct usb_device *udev = data->udev;
1033
1034                 /* New sniffer firmware has crippled HCI interface */
1035                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1036                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1037
1038                 data->isoc = NULL;
1039         }
1040
1041         if (id->driver_info & BTUSB_BCM92035) {
1042                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1043                 struct sk_buff *skb;
1044
1045                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1046                 if (skb) {
1047                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1048                         skb_queue_tail(&hdev->driver_init, skb);
1049                 }
1050         }
1051
1052         if (data->isoc) {
1053                 err = usb_driver_claim_interface(&btusb_driver,
1054                                                         data->isoc, data);
1055                 if (err < 0) {
1056                         hci_free_dev(hdev);
1057                         kfree(data);
1058                         return err;
1059                 }
1060         }
1061
1062         err = hci_register_dev(hdev);
1063         if (err < 0) {
1064                 hci_free_dev(hdev);
1065                 kfree(data);
1066                 return err;
1067         }
1068
1069         usb_set_intfdata(intf, data);
1070
1071         return 0;
1072 }
1073
1074 static void btusb_disconnect(struct usb_interface *intf)
1075 {
1076         struct btusb_data *data = usb_get_intfdata(intf);
1077         struct hci_dev *hdev;
1078
1079         BT_DBG("intf %p", intf);
1080
1081         if (!data)
1082                 return;
1083
1084         hdev = data->hdev;
1085
1086         __hci_dev_hold(hdev);
1087
1088         usb_set_intfdata(data->intf, NULL);
1089
1090         if (data->isoc)
1091                 usb_set_intfdata(data->isoc, NULL);
1092
1093         hci_unregister_dev(hdev);
1094
1095         if (intf == data->isoc)
1096                 usb_driver_release_interface(&btusb_driver, data->intf);
1097         else if (data->isoc)
1098                 usb_driver_release_interface(&btusb_driver, data->isoc);
1099
1100         __hci_dev_put(hdev);
1101
1102         hci_free_dev(hdev);
1103 }
1104
1105 #ifdef CONFIG_PM
1106 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1107 {
1108         struct btusb_data *data = usb_get_intfdata(intf);
1109
1110         BT_DBG("intf %p", intf);
1111
1112         if (data->suspend_count++)
1113                 return 0;
1114
1115         spin_lock_irq(&data->txlock);
1116         if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1117                 set_bit(BTUSB_SUSPENDING, &data->flags);
1118                 spin_unlock_irq(&data->txlock);
1119         } else {
1120                 spin_unlock_irq(&data->txlock);
1121                 data->suspend_count--;
1122                 return -EBUSY;
1123         }
1124
1125         cancel_work_sync(&data->work);
1126
1127         btusb_stop_traffic(data);
1128         usb_kill_anchored_urbs(&data->tx_anchor);
1129
1130         return 0;
1131 }
1132
1133 static void play_deferred(struct btusb_data *data)
1134 {
1135         struct urb *urb;
1136         int err;
1137
1138         while ((urb = usb_get_from_anchor(&data->deferred))) {
1139                 err = usb_submit_urb(urb, GFP_ATOMIC);
1140                 if (err < 0)
1141                         break;
1142
1143                 data->tx_in_flight++;
1144         }
1145         usb_scuttle_anchored_urbs(&data->deferred);
1146 }
1147
1148 static int btusb_resume(struct usb_interface *intf)
1149 {
1150         struct btusb_data *data = usb_get_intfdata(intf);
1151         struct hci_dev *hdev = data->hdev;
1152         int err = 0;
1153
1154         BT_DBG("intf %p", intf);
1155
1156         if (--data->suspend_count)
1157                 return 0;
1158
1159         if (!test_bit(HCI_RUNNING, &hdev->flags))
1160                 goto done;
1161
1162         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1163                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1164                 if (err < 0) {
1165                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1166                         goto failed;
1167                 }
1168         }
1169
1170         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1171                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1172                 if (err < 0) {
1173                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1174                         goto failed;
1175                 }
1176
1177                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1178         }
1179
1180         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1181                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1182                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1183                 else
1184                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1185         }
1186
1187         spin_lock_irq(&data->txlock);
1188         play_deferred(data);
1189         clear_bit(BTUSB_SUSPENDING, &data->flags);
1190         spin_unlock_irq(&data->txlock);
1191         schedule_work(&data->work);
1192
1193         return 0;
1194
1195 failed:
1196         usb_scuttle_anchored_urbs(&data->deferred);
1197 done:
1198         spin_lock_irq(&data->txlock);
1199         clear_bit(BTUSB_SUSPENDING, &data->flags);
1200         spin_unlock_irq(&data->txlock);
1201
1202         return err;
1203 }
1204 #endif
1205
1206 static struct usb_driver btusb_driver = {
1207         .name           = "btusb",
1208         .probe          = btusb_probe,
1209         .disconnect     = btusb_disconnect,
1210 #ifdef CONFIG_PM
1211         .suspend        = btusb_suspend,
1212         .resume         = btusb_resume,
1213 #endif
1214         .id_table       = btusb_table,
1215         .supports_autosuspend = 1,
1216 };
1217
1218 static int __init btusb_init(void)
1219 {
1220         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1221
1222         return usb_register(&btusb_driver);
1223 }
1224
1225 static void __exit btusb_exit(void)
1226 {
1227         usb_deregister(&btusb_driver);
1228 }
1229
1230 module_init(btusb_init);
1231 module_exit(btusb_exit);
1232
1233 module_param(ignore_dga, bool, 0644);
1234 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1235
1236 module_param(ignore_csr, bool, 0644);
1237 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1238
1239 module_param(ignore_sniffer, bool, 0644);
1240 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1241
1242 module_param(disable_scofix, bool, 0644);
1243 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1244
1245 module_param(force_scofix, bool, 0644);
1246 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1247
1248 module_param(reset, bool, 0644);
1249 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1250
1251 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1252 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1253 MODULE_VERSION(VERSION);
1254 MODULE_LICENSE("GPL");