Merge git://bedivere.hansenpartnership.com/git/scsi-rc-fixes-2.6
[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 MacBookPro8,2 */
76         { USB_DEVICE(0x05ac, 0x821a) },
77
78         /* AVM BlueFRITZ! USB v2.0 */
79         { USB_DEVICE(0x057c, 0x3800) },
80
81         /* Bluetooth Ultraport Module from IBM */
82         { USB_DEVICE(0x04bf, 0x030a) },
83
84         /* ALPS Modules with non-standard id */
85         { USB_DEVICE(0x044e, 0x3001) },
86         { USB_DEVICE(0x044e, 0x3002) },
87
88         /* Ericsson with non-standard id */
89         { USB_DEVICE(0x0bdb, 0x1002) },
90
91         /* Canyon CN-BTU1 with HID interfaces */
92         { USB_DEVICE(0x0c10, 0x0000) },
93
94         { }     /* Terminating entry */
95 };
96
97 MODULE_DEVICE_TABLE(usb, btusb_table);
98
99 static struct usb_device_id blacklist_table[] = {
100         /* CSR BlueCore devices */
101         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
102
103         /* Broadcom BCM2033 without firmware */
104         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
105
106         /* Atheros 3011 with sflash firmware */
107         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
108         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
109         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
110
111         /* Atheros AR9285 Malbec with sflash firmware */
112         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
113
114         /* Atheros 3012 with sflash firmware */
115         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
116
117         /* Atheros AR5BBU12 with sflash firmware */
118         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
119
120         /* Broadcom BCM2035 */
121         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
122         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
123         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
124
125         /* Broadcom BCM2045 */
126         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
127         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
128
129         /* IBM/Lenovo ThinkPad with Broadcom chip */
130         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
131         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
132
133         /* HP laptop with Broadcom chip */
134         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
135
136         /* Dell laptop with Broadcom chip */
137         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
138
139         /* Dell Wireless 370 and 410 devices */
140         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
141         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
142
143         /* Belkin F8T012 and F8T013 devices */
144         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
145         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
146
147         /* Asus WL-BTD202 device */
148         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
149
150         /* Kensington Bluetooth USB adapter */
151         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
152
153         /* RTX Telecom based adapters with buggy SCO support */
154         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
155         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
156
157         /* CONWISE Technology based adapters with buggy SCO support */
158         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
159
160         /* Digianswer devices */
161         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
162         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
163
164         /* CSR BlueCore Bluetooth Sniffer */
165         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
166
167         /* Frontline ComProbe Bluetooth Sniffer */
168         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
169
170         { }     /* Terminating entry */
171 };
172
173 #define BTUSB_MAX_ISOC_FRAMES   10
174
175 #define BTUSB_INTR_RUNNING      0
176 #define BTUSB_BULK_RUNNING      1
177 #define BTUSB_ISOC_RUNNING      2
178 #define BTUSB_SUSPENDING        3
179 #define BTUSB_DID_ISO_RESUME    4
180
181 struct btusb_data {
182         struct hci_dev       *hdev;
183         struct usb_device    *udev;
184         struct usb_interface *intf;
185         struct usb_interface *isoc;
186
187         spinlock_t lock;
188
189         unsigned long flags;
190
191         struct work_struct work;
192         struct work_struct waker;
193
194         struct usb_anchor tx_anchor;
195         struct usb_anchor intr_anchor;
196         struct usb_anchor bulk_anchor;
197         struct usb_anchor isoc_anchor;
198         struct usb_anchor deferred;
199         int tx_in_flight;
200         spinlock_t txlock;
201
202         struct usb_endpoint_descriptor *intr_ep;
203         struct usb_endpoint_descriptor *bulk_tx_ep;
204         struct usb_endpoint_descriptor *bulk_rx_ep;
205         struct usb_endpoint_descriptor *isoc_tx_ep;
206         struct usb_endpoint_descriptor *isoc_rx_ep;
207
208         __u8 cmdreq_type;
209
210         unsigned int sco_num;
211         int isoc_altsetting;
212         int suspend_count;
213 };
214
215 static int inc_tx(struct btusb_data *data)
216 {
217         unsigned long flags;
218         int rv;
219
220         spin_lock_irqsave(&data->txlock, flags);
221         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
222         if (!rv)
223                 data->tx_in_flight++;
224         spin_unlock_irqrestore(&data->txlock, flags);
225
226         return rv;
227 }
228
229 static void btusb_intr_complete(struct urb *urb)
230 {
231         struct hci_dev *hdev = urb->context;
232         struct btusb_data *data = hdev->driver_data;
233         int err;
234
235         BT_DBG("%s urb %p status %d count %d", hdev->name,
236                                         urb, urb->status, urb->actual_length);
237
238         if (!test_bit(HCI_RUNNING, &hdev->flags))
239                 return;
240
241         if (urb->status == 0) {
242                 hdev->stat.byte_rx += urb->actual_length;
243
244                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
245                                                 urb->transfer_buffer,
246                                                 urb->actual_length) < 0) {
247                         BT_ERR("%s corrupted event packet", hdev->name);
248                         hdev->stat.err_rx++;
249                 }
250         }
251
252         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
253                 return;
254
255         usb_mark_last_busy(data->udev);
256         usb_anchor_urb(urb, &data->intr_anchor);
257
258         err = usb_submit_urb(urb, GFP_ATOMIC);
259         if (err < 0) {
260                 /* -EPERM: urb is being killed;
261                  * -ENODEV: device got disconnected */
262                 if (err != -EPERM && err != -ENODEV)
263                         BT_ERR("%s urb %p failed to resubmit (%d)",
264                                                 hdev->name, urb, -err);
265                 usb_unanchor_urb(urb);
266         }
267 }
268
269 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
270 {
271         struct btusb_data *data = hdev->driver_data;
272         struct urb *urb;
273         unsigned char *buf;
274         unsigned int pipe;
275         int err, size;
276
277         BT_DBG("%s", hdev->name);
278
279         if (!data->intr_ep)
280                 return -ENODEV;
281
282         urb = usb_alloc_urb(0, mem_flags);
283         if (!urb)
284                 return -ENOMEM;
285
286         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
287
288         buf = kmalloc(size, mem_flags);
289         if (!buf) {
290                 usb_free_urb(urb);
291                 return -ENOMEM;
292         }
293
294         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
295
296         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
297                                                 btusb_intr_complete, hdev,
298                                                 data->intr_ep->bInterval);
299
300         urb->transfer_flags |= URB_FREE_BUFFER;
301
302         usb_anchor_urb(urb, &data->intr_anchor);
303
304         err = usb_submit_urb(urb, mem_flags);
305         if (err < 0) {
306                 BT_ERR("%s urb %p submission failed (%d)",
307                                                 hdev->name, urb, -err);
308                 usb_unanchor_urb(urb);
309         }
310
311         usb_free_urb(urb);
312
313         return err;
314 }
315
316 static void btusb_bulk_complete(struct urb *urb)
317 {
318         struct hci_dev *hdev = urb->context;
319         struct btusb_data *data = hdev->driver_data;
320         int err;
321
322         BT_DBG("%s urb %p status %d count %d", hdev->name,
323                                         urb, urb->status, urb->actual_length);
324
325         if (!test_bit(HCI_RUNNING, &hdev->flags))
326                 return;
327
328         if (urb->status == 0) {
329                 hdev->stat.byte_rx += urb->actual_length;
330
331                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
332                                                 urb->transfer_buffer,
333                                                 urb->actual_length) < 0) {
334                         BT_ERR("%s corrupted ACL packet", hdev->name);
335                         hdev->stat.err_rx++;
336                 }
337         }
338
339         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
340                 return;
341
342         usb_anchor_urb(urb, &data->bulk_anchor);
343         usb_mark_last_busy(data->udev);
344
345         err = usb_submit_urb(urb, GFP_ATOMIC);
346         if (err < 0) {
347                 /* -EPERM: urb is being killed;
348                  * -ENODEV: device got disconnected */
349                 if (err != -EPERM && err != -ENODEV)
350                         BT_ERR("%s urb %p failed to resubmit (%d)",
351                                                 hdev->name, urb, -err);
352                 usb_unanchor_urb(urb);
353         }
354 }
355
356 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
357 {
358         struct btusb_data *data = hdev->driver_data;
359         struct urb *urb;
360         unsigned char *buf;
361         unsigned int pipe;
362         int err, size = HCI_MAX_FRAME_SIZE;
363
364         BT_DBG("%s", hdev->name);
365
366         if (!data->bulk_rx_ep)
367                 return -ENODEV;
368
369         urb = usb_alloc_urb(0, mem_flags);
370         if (!urb)
371                 return -ENOMEM;
372
373         buf = kmalloc(size, mem_flags);
374         if (!buf) {
375                 usb_free_urb(urb);
376                 return -ENOMEM;
377         }
378
379         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
380
381         usb_fill_bulk_urb(urb, data->udev, pipe,
382                                         buf, size, btusb_bulk_complete, hdev);
383
384         urb->transfer_flags |= URB_FREE_BUFFER;
385
386         usb_mark_last_busy(data->udev);
387         usb_anchor_urb(urb, &data->bulk_anchor);
388
389         err = usb_submit_urb(urb, mem_flags);
390         if (err < 0) {
391                 BT_ERR("%s urb %p submission failed (%d)",
392                                                 hdev->name, urb, -err);
393                 usb_unanchor_urb(urb);
394         }
395
396         usb_free_urb(urb);
397
398         return err;
399 }
400
401 static void btusb_isoc_complete(struct urb *urb)
402 {
403         struct hci_dev *hdev = urb->context;
404         struct btusb_data *data = hdev->driver_data;
405         int i, err;
406
407         BT_DBG("%s urb %p status %d count %d", hdev->name,
408                                         urb, urb->status, urb->actual_length);
409
410         if (!test_bit(HCI_RUNNING, &hdev->flags))
411                 return;
412
413         if (urb->status == 0) {
414                 for (i = 0; i < urb->number_of_packets; i++) {
415                         unsigned int offset = urb->iso_frame_desc[i].offset;
416                         unsigned int length = urb->iso_frame_desc[i].actual_length;
417
418                         if (urb->iso_frame_desc[i].status)
419                                 continue;
420
421                         hdev->stat.byte_rx += length;
422
423                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
424                                                 urb->transfer_buffer + offset,
425                                                                 length) < 0) {
426                                 BT_ERR("%s corrupted SCO packet", hdev->name);
427                                 hdev->stat.err_rx++;
428                         }
429                 }
430         }
431
432         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
433                 return;
434
435         usb_anchor_urb(urb, &data->isoc_anchor);
436
437         err = usb_submit_urb(urb, GFP_ATOMIC);
438         if (err < 0) {
439                 /* -EPERM: urb is being killed;
440                  * -ENODEV: device got disconnected */
441                 if (err != -EPERM && err != -ENODEV)
442                         BT_ERR("%s urb %p failed to resubmit (%d)",
443                                                 hdev->name, urb, -err);
444                 usb_unanchor_urb(urb);
445         }
446 }
447
448 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
449 {
450         int i, offset = 0;
451
452         BT_DBG("len %d mtu %d", len, mtu);
453
454         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
455                                         i++, offset += mtu, len -= mtu) {
456                 urb->iso_frame_desc[i].offset = offset;
457                 urb->iso_frame_desc[i].length = mtu;
458         }
459
460         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
461                 urb->iso_frame_desc[i].offset = offset;
462                 urb->iso_frame_desc[i].length = len;
463                 i++;
464         }
465
466         urb->number_of_packets = i;
467 }
468
469 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
470 {
471         struct btusb_data *data = hdev->driver_data;
472         struct urb *urb;
473         unsigned char *buf;
474         unsigned int pipe;
475         int err, size;
476
477         BT_DBG("%s", hdev->name);
478
479         if (!data->isoc_rx_ep)
480                 return -ENODEV;
481
482         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
483         if (!urb)
484                 return -ENOMEM;
485
486         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
487                                                 BTUSB_MAX_ISOC_FRAMES;
488
489         buf = kmalloc(size, mem_flags);
490         if (!buf) {
491                 usb_free_urb(urb);
492                 return -ENOMEM;
493         }
494
495         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
496
497         urb->dev      = data->udev;
498         urb->pipe     = pipe;
499         urb->context  = hdev;
500         urb->complete = btusb_isoc_complete;
501         urb->interval = data->isoc_rx_ep->bInterval;
502
503         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
504         urb->transfer_buffer = buf;
505         urb->transfer_buffer_length = size;
506
507         __fill_isoc_descriptor(urb, size,
508                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
509
510         usb_anchor_urb(urb, &data->isoc_anchor);
511
512         err = usb_submit_urb(urb, mem_flags);
513         if (err < 0) {
514                 BT_ERR("%s urb %p submission failed (%d)",
515                                                 hdev->name, urb, -err);
516                 usb_unanchor_urb(urb);
517         }
518
519         usb_free_urb(urb);
520
521         return err;
522 }
523
524 static void btusb_tx_complete(struct urb *urb)
525 {
526         struct sk_buff *skb = urb->context;
527         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
528         struct btusb_data *data = hdev->driver_data;
529
530         BT_DBG("%s urb %p status %d count %d", hdev->name,
531                                         urb, urb->status, urb->actual_length);
532
533         if (!test_bit(HCI_RUNNING, &hdev->flags))
534                 goto done;
535
536         if (!urb->status)
537                 hdev->stat.byte_tx += urb->transfer_buffer_length;
538         else
539                 hdev->stat.err_tx++;
540
541 done:
542         spin_lock(&data->txlock);
543         data->tx_in_flight--;
544         spin_unlock(&data->txlock);
545
546         kfree(urb->setup_packet);
547
548         kfree_skb(skb);
549 }
550
551 static void btusb_isoc_tx_complete(struct urb *urb)
552 {
553         struct sk_buff *skb = urb->context;
554         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
555
556         BT_DBG("%s urb %p status %d count %d", hdev->name,
557                                         urb, urb->status, urb->actual_length);
558
559         if (!test_bit(HCI_RUNNING, &hdev->flags))
560                 goto done;
561
562         if (!urb->status)
563                 hdev->stat.byte_tx += urb->transfer_buffer_length;
564         else
565                 hdev->stat.err_tx++;
566
567 done:
568         kfree(urb->setup_packet);
569
570         kfree_skb(skb);
571 }
572
573 static int btusb_open(struct hci_dev *hdev)
574 {
575         struct btusb_data *data = hdev->driver_data;
576         int err;
577
578         BT_DBG("%s", hdev->name);
579
580         err = usb_autopm_get_interface(data->intf);
581         if (err < 0)
582                 return err;
583
584         data->intf->needs_remote_wakeup = 1;
585
586         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
587                 goto done;
588
589         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
590                 goto done;
591
592         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
593         if (err < 0)
594                 goto failed;
595
596         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
597         if (err < 0) {
598                 usb_kill_anchored_urbs(&data->intr_anchor);
599                 goto failed;
600         }
601
602         set_bit(BTUSB_BULK_RUNNING, &data->flags);
603         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
604
605 done:
606         usb_autopm_put_interface(data->intf);
607         return 0;
608
609 failed:
610         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
611         clear_bit(HCI_RUNNING, &hdev->flags);
612         usb_autopm_put_interface(data->intf);
613         return err;
614 }
615
616 static void btusb_stop_traffic(struct btusb_data *data)
617 {
618         usb_kill_anchored_urbs(&data->intr_anchor);
619         usb_kill_anchored_urbs(&data->bulk_anchor);
620         usb_kill_anchored_urbs(&data->isoc_anchor);
621 }
622
623 static int btusb_close(struct hci_dev *hdev)
624 {
625         struct btusb_data *data = hdev->driver_data;
626         int err;
627
628         BT_DBG("%s", hdev->name);
629
630         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
631                 return 0;
632
633         cancel_work_sync(&data->work);
634         cancel_work_sync(&data->waker);
635
636         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
637         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
638         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
639
640         btusb_stop_traffic(data);
641         err = usb_autopm_get_interface(data->intf);
642         if (err < 0)
643                 goto failed;
644
645         data->intf->needs_remote_wakeup = 0;
646         usb_autopm_put_interface(data->intf);
647
648 failed:
649         usb_scuttle_anchored_urbs(&data->deferred);
650         return 0;
651 }
652
653 static int btusb_flush(struct hci_dev *hdev)
654 {
655         struct btusb_data *data = hdev->driver_data;
656
657         BT_DBG("%s", hdev->name);
658
659         usb_kill_anchored_urbs(&data->tx_anchor);
660
661         return 0;
662 }
663
664 static int btusb_send_frame(struct sk_buff *skb)
665 {
666         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
667         struct btusb_data *data = hdev->driver_data;
668         struct usb_ctrlrequest *dr;
669         struct urb *urb;
670         unsigned int pipe;
671         int err;
672
673         BT_DBG("%s", hdev->name);
674
675         if (!test_bit(HCI_RUNNING, &hdev->flags))
676                 return -EBUSY;
677
678         switch (bt_cb(skb)->pkt_type) {
679         case HCI_COMMAND_PKT:
680                 urb = usb_alloc_urb(0, GFP_ATOMIC);
681                 if (!urb)
682                         return -ENOMEM;
683
684                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
685                 if (!dr) {
686                         usb_free_urb(urb);
687                         return -ENOMEM;
688                 }
689
690                 dr->bRequestType = data->cmdreq_type;
691                 dr->bRequest     = 0;
692                 dr->wIndex       = 0;
693                 dr->wValue       = 0;
694                 dr->wLength      = __cpu_to_le16(skb->len);
695
696                 pipe = usb_sndctrlpipe(data->udev, 0x00);
697
698                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
699                                 skb->data, skb->len, btusb_tx_complete, skb);
700
701                 hdev->stat.cmd_tx++;
702                 break;
703
704         case HCI_ACLDATA_PKT:
705                 if (!data->bulk_tx_ep || (hdev->conn_hash.acl_num < 1 &&
706                                                 hdev->conn_hash.le_num < 1))
707                         return -ENODEV;
708
709                 urb = usb_alloc_urb(0, GFP_ATOMIC);
710                 if (!urb)
711                         return -ENOMEM;
712
713                 pipe = usb_sndbulkpipe(data->udev,
714                                         data->bulk_tx_ep->bEndpointAddress);
715
716                 usb_fill_bulk_urb(urb, data->udev, pipe,
717                                 skb->data, skb->len, btusb_tx_complete, skb);
718
719                 hdev->stat.acl_tx++;
720                 break;
721
722         case HCI_SCODATA_PKT:
723                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
724                         return -ENODEV;
725
726                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
727                 if (!urb)
728                         return -ENOMEM;
729
730                 pipe = usb_sndisocpipe(data->udev,
731                                         data->isoc_tx_ep->bEndpointAddress);
732
733                 usb_fill_int_urb(urb, data->udev, pipe,
734                                 skb->data, skb->len, btusb_isoc_tx_complete,
735                                 skb, data->isoc_tx_ep->bInterval);
736
737                 urb->transfer_flags  = URB_ISO_ASAP;
738
739                 __fill_isoc_descriptor(urb, skb->len,
740                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
741
742                 hdev->stat.sco_tx++;
743                 goto skip_waking;
744
745         default:
746                 return -EILSEQ;
747         }
748
749         err = inc_tx(data);
750         if (err) {
751                 usb_anchor_urb(urb, &data->deferred);
752                 schedule_work(&data->waker);
753                 err = 0;
754                 goto done;
755         }
756
757 skip_waking:
758         usb_anchor_urb(urb, &data->tx_anchor);
759
760         err = usb_submit_urb(urb, GFP_ATOMIC);
761         if (err < 0) {
762                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
763                 kfree(urb->setup_packet);
764                 usb_unanchor_urb(urb);
765         } else {
766                 usb_mark_last_busy(data->udev);
767         }
768
769         usb_free_urb(urb);
770
771 done:
772         return err;
773 }
774
775 static void btusb_destruct(struct hci_dev *hdev)
776 {
777         struct btusb_data *data = hdev->driver_data;
778
779         BT_DBG("%s", hdev->name);
780
781         kfree(data);
782 }
783
784 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
785 {
786         struct btusb_data *data = hdev->driver_data;
787
788         BT_DBG("%s evt %d", hdev->name, evt);
789
790         if (hdev->conn_hash.sco_num != data->sco_num) {
791                 data->sco_num = hdev->conn_hash.sco_num;
792                 schedule_work(&data->work);
793         }
794 }
795
796 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
797 {
798         struct btusb_data *data = hdev->driver_data;
799         struct usb_interface *intf = data->isoc;
800         struct usb_endpoint_descriptor *ep_desc;
801         int i, err;
802
803         if (!data->isoc)
804                 return -ENODEV;
805
806         err = usb_set_interface(data->udev, 1, altsetting);
807         if (err < 0) {
808                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
809                 return err;
810         }
811
812         data->isoc_altsetting = altsetting;
813
814         data->isoc_tx_ep = NULL;
815         data->isoc_rx_ep = NULL;
816
817         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
818                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
819
820                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
821                         data->isoc_tx_ep = ep_desc;
822                         continue;
823                 }
824
825                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
826                         data->isoc_rx_ep = ep_desc;
827                         continue;
828                 }
829         }
830
831         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
832                 BT_ERR("%s invalid SCO descriptors", hdev->name);
833                 return -ENODEV;
834         }
835
836         return 0;
837 }
838
839 static void btusb_work(struct work_struct *work)
840 {
841         struct btusb_data *data = container_of(work, struct btusb_data, work);
842         struct hci_dev *hdev = data->hdev;
843         int err;
844
845         if (hdev->conn_hash.sco_num > 0) {
846                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
847                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
848                         if (err < 0) {
849                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
850                                 usb_kill_anchored_urbs(&data->isoc_anchor);
851                                 return;
852                         }
853
854                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
855                 }
856                 if (data->isoc_altsetting != 2) {
857                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
858                         usb_kill_anchored_urbs(&data->isoc_anchor);
859
860                         if (__set_isoc_interface(hdev, 2) < 0)
861                                 return;
862                 }
863
864                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
865                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
866                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
867                         else
868                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
869                 }
870         } else {
871                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
872                 usb_kill_anchored_urbs(&data->isoc_anchor);
873
874                 __set_isoc_interface(hdev, 0);
875                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
876                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
877         }
878 }
879
880 static void btusb_waker(struct work_struct *work)
881 {
882         struct btusb_data *data = container_of(work, struct btusb_data, waker);
883         int err;
884
885         err = usb_autopm_get_interface(data->intf);
886         if (err < 0)
887                 return;
888
889         usb_autopm_put_interface(data->intf);
890 }
891
892 static int btusb_probe(struct usb_interface *intf,
893                                 const struct usb_device_id *id)
894 {
895         struct usb_endpoint_descriptor *ep_desc;
896         struct btusb_data *data;
897         struct hci_dev *hdev;
898         int i, err;
899
900         BT_DBG("intf %p id %p", intf, id);
901
902         /* interface numbers are hardcoded in the spec */
903         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
904                 return -ENODEV;
905
906         if (!id->driver_info) {
907                 const struct usb_device_id *match;
908                 match = usb_match_id(intf, blacklist_table);
909                 if (match)
910                         id = match;
911         }
912
913         if (id->driver_info == BTUSB_IGNORE)
914                 return -ENODEV;
915
916         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
917                 return -ENODEV;
918
919         if (ignore_csr && id->driver_info & BTUSB_CSR)
920                 return -ENODEV;
921
922         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
923                 return -ENODEV;
924
925         if (id->driver_info & BTUSB_ATH3012) {
926                 struct usb_device *udev = interface_to_usbdev(intf);
927
928                 /* Old firmware would otherwise let ath3k driver load
929                  * patch and sysconfig files */
930                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
931                         return -ENODEV;
932         }
933
934         data = kzalloc(sizeof(*data), GFP_KERNEL);
935         if (!data)
936                 return -ENOMEM;
937
938         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
939                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
940
941                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
942                         data->intr_ep = ep_desc;
943                         continue;
944                 }
945
946                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
947                         data->bulk_tx_ep = ep_desc;
948                         continue;
949                 }
950
951                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
952                         data->bulk_rx_ep = ep_desc;
953                         continue;
954                 }
955         }
956
957         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
958                 kfree(data);
959                 return -ENODEV;
960         }
961
962         data->cmdreq_type = USB_TYPE_CLASS;
963
964         data->udev = interface_to_usbdev(intf);
965         data->intf = intf;
966
967         spin_lock_init(&data->lock);
968
969         INIT_WORK(&data->work, btusb_work);
970         INIT_WORK(&data->waker, btusb_waker);
971         spin_lock_init(&data->txlock);
972
973         init_usb_anchor(&data->tx_anchor);
974         init_usb_anchor(&data->intr_anchor);
975         init_usb_anchor(&data->bulk_anchor);
976         init_usb_anchor(&data->isoc_anchor);
977         init_usb_anchor(&data->deferred);
978
979         hdev = hci_alloc_dev();
980         if (!hdev) {
981                 kfree(data);
982                 return -ENOMEM;
983         }
984
985         hdev->bus = HCI_USB;
986         hdev->driver_data = data;
987
988         data->hdev = hdev;
989
990         SET_HCIDEV_DEV(hdev, &intf->dev);
991
992         hdev->open     = btusb_open;
993         hdev->close    = btusb_close;
994         hdev->flush    = btusb_flush;
995         hdev->send     = btusb_send_frame;
996         hdev->destruct = btusb_destruct;
997         hdev->notify   = btusb_notify;
998
999         hdev->owner = THIS_MODULE;
1000
1001         /* Interface numbers are hardcoded in the specification */
1002         data->isoc = usb_ifnum_to_if(data->udev, 1);
1003
1004         if (!reset)
1005                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1006
1007         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1008                 if (!disable_scofix)
1009                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1010         }
1011
1012         if (id->driver_info & BTUSB_BROKEN_ISOC)
1013                 data->isoc = NULL;
1014
1015         if (id->driver_info & BTUSB_DIGIANSWER) {
1016                 data->cmdreq_type = USB_TYPE_VENDOR;
1017                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1018         }
1019
1020         if (id->driver_info & BTUSB_CSR) {
1021                 struct usb_device *udev = data->udev;
1022
1023                 /* Old firmware would otherwise execute USB reset */
1024                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1025                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1026         }
1027
1028         if (id->driver_info & BTUSB_SNIFFER) {
1029                 struct usb_device *udev = data->udev;
1030
1031                 /* New sniffer firmware has crippled HCI interface */
1032                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1033                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1034
1035                 data->isoc = NULL;
1036         }
1037
1038         if (id->driver_info & BTUSB_BCM92035) {
1039                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1040                 struct sk_buff *skb;
1041
1042                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1043                 if (skb) {
1044                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1045                         skb_queue_tail(&hdev->driver_init, skb);
1046                 }
1047         }
1048
1049         if (data->isoc) {
1050                 err = usb_driver_claim_interface(&btusb_driver,
1051                                                         data->isoc, data);
1052                 if (err < 0) {
1053                         hci_free_dev(hdev);
1054                         kfree(data);
1055                         return err;
1056                 }
1057         }
1058
1059         err = hci_register_dev(hdev);
1060         if (err < 0) {
1061                 hci_free_dev(hdev);
1062                 kfree(data);
1063                 return err;
1064         }
1065
1066         usb_set_intfdata(intf, data);
1067
1068         return 0;
1069 }
1070
1071 static void btusb_disconnect(struct usb_interface *intf)
1072 {
1073         struct btusb_data *data = usb_get_intfdata(intf);
1074         struct hci_dev *hdev;
1075
1076         BT_DBG("intf %p", intf);
1077
1078         if (!data)
1079                 return;
1080
1081         hdev = data->hdev;
1082
1083         __hci_dev_hold(hdev);
1084
1085         usb_set_intfdata(data->intf, NULL);
1086
1087         if (data->isoc)
1088                 usb_set_intfdata(data->isoc, NULL);
1089
1090         hci_unregister_dev(hdev);
1091
1092         if (intf == data->isoc)
1093                 usb_driver_release_interface(&btusb_driver, data->intf);
1094         else if (data->isoc)
1095                 usb_driver_release_interface(&btusb_driver, data->isoc);
1096
1097         __hci_dev_put(hdev);
1098
1099         hci_free_dev(hdev);
1100 }
1101
1102 #ifdef CONFIG_PM
1103 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1104 {
1105         struct btusb_data *data = usb_get_intfdata(intf);
1106
1107         BT_DBG("intf %p", intf);
1108
1109         if (data->suspend_count++)
1110                 return 0;
1111
1112         spin_lock_irq(&data->txlock);
1113         if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1114                 set_bit(BTUSB_SUSPENDING, &data->flags);
1115                 spin_unlock_irq(&data->txlock);
1116         } else {
1117                 spin_unlock_irq(&data->txlock);
1118                 data->suspend_count--;
1119                 return -EBUSY;
1120         }
1121
1122         cancel_work_sync(&data->work);
1123
1124         btusb_stop_traffic(data);
1125         usb_kill_anchored_urbs(&data->tx_anchor);
1126
1127         return 0;
1128 }
1129
1130 static void play_deferred(struct btusb_data *data)
1131 {
1132         struct urb *urb;
1133         int err;
1134
1135         while ((urb = usb_get_from_anchor(&data->deferred))) {
1136                 err = usb_submit_urb(urb, GFP_ATOMIC);
1137                 if (err < 0)
1138                         break;
1139
1140                 data->tx_in_flight++;
1141         }
1142         usb_scuttle_anchored_urbs(&data->deferred);
1143 }
1144
1145 static int btusb_resume(struct usb_interface *intf)
1146 {
1147         struct btusb_data *data = usb_get_intfdata(intf);
1148         struct hci_dev *hdev = data->hdev;
1149         int err = 0;
1150
1151         BT_DBG("intf %p", intf);
1152
1153         if (--data->suspend_count)
1154                 return 0;
1155
1156         if (!test_bit(HCI_RUNNING, &hdev->flags))
1157                 goto done;
1158
1159         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1160                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1161                 if (err < 0) {
1162                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1163                         goto failed;
1164                 }
1165         }
1166
1167         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1168                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1169                 if (err < 0) {
1170                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1171                         goto failed;
1172                 }
1173
1174                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1175         }
1176
1177         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1178                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1179                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1180                 else
1181                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1182         }
1183
1184         spin_lock_irq(&data->txlock);
1185         play_deferred(data);
1186         clear_bit(BTUSB_SUSPENDING, &data->flags);
1187         spin_unlock_irq(&data->txlock);
1188         schedule_work(&data->work);
1189
1190         return 0;
1191
1192 failed:
1193         usb_scuttle_anchored_urbs(&data->deferred);
1194 done:
1195         spin_lock_irq(&data->txlock);
1196         clear_bit(BTUSB_SUSPENDING, &data->flags);
1197         spin_unlock_irq(&data->txlock);
1198
1199         return err;
1200 }
1201 #endif
1202
1203 static struct usb_driver btusb_driver = {
1204         .name           = "btusb",
1205         .probe          = btusb_probe,
1206         .disconnect     = btusb_disconnect,
1207 #ifdef CONFIG_PM
1208         .suspend        = btusb_suspend,
1209         .resume         = btusb_resume,
1210 #endif
1211         .id_table       = btusb_table,
1212         .supports_autosuspend = 1,
1213 };
1214
1215 static int __init btusb_init(void)
1216 {
1217         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1218
1219         return usb_register(&btusb_driver);
1220 }
1221
1222 static void __exit btusb_exit(void)
1223 {
1224         usb_deregister(&btusb_driver);
1225 }
1226
1227 module_init(btusb_init);
1228 module_exit(btusb_exit);
1229
1230 module_param(ignore_dga, bool, 0644);
1231 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1232
1233 module_param(ignore_csr, bool, 0644);
1234 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1235
1236 module_param(ignore_sniffer, bool, 0644);
1237 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1238
1239 module_param(disable_scofix, bool, 0644);
1240 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1241
1242 module_param(force_scofix, bool, 0644);
1243 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1244
1245 module_param(reset, bool, 0644);
1246 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1247
1248 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1249 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1250 MODULE_VERSION(VERSION);
1251 MODULE_LICENSE("GPL");