module_param: make bool parameters really bool (drivers & misc)
[platform/adaptation/renesas_rcar/renesas_kernel.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 bool ignore_dga;
41 static bool ignore_csr;
42 static bool ignore_sniffer;
43 static bool disable_scofix;
44 static bool force_scofix;
45
46 static bool 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         /* Broadcom SoftSailing reporting vendor specific */
64         { USB_DEVICE(0x05ac, 0x21e1) },
65
66         /* Apple MacBookPro 7,1 */
67         { USB_DEVICE(0x05ac, 0x8213) },
68
69         /* Apple iMac11,1 */
70         { USB_DEVICE(0x05ac, 0x8215) },
71
72         /* Apple MacBookPro6,2 */
73         { USB_DEVICE(0x05ac, 0x8218) },
74
75         /* Apple MacBookAir3,1, MacBookAir3,2 */
76         { USB_DEVICE(0x05ac, 0x821b) },
77
78         /* Apple MacBookAir4,1 */
79         { USB_DEVICE(0x05ac, 0x821f) },
80
81         /* Apple MacBookPro8,2 */
82         { USB_DEVICE(0x05ac, 0x821a) },
83
84         /* Apple MacMini5,1 */
85         { USB_DEVICE(0x05ac, 0x8281) },
86
87         /* AVM BlueFRITZ! USB v2.0 */
88         { USB_DEVICE(0x057c, 0x3800) },
89
90         /* Bluetooth Ultraport Module from IBM */
91         { USB_DEVICE(0x04bf, 0x030a) },
92
93         /* ALPS Modules with non-standard id */
94         { USB_DEVICE(0x044e, 0x3001) },
95         { USB_DEVICE(0x044e, 0x3002) },
96
97         /* Ericsson with non-standard id */
98         { USB_DEVICE(0x0bdb, 0x1002) },
99
100         /* Canyon CN-BTU1 with HID interfaces */
101         { USB_DEVICE(0x0c10, 0x0000) },
102
103         /* Broadcom BCM20702A0 */
104         { USB_DEVICE(0x0a5c, 0x21e3) },
105         { USB_DEVICE(0x413c, 0x8197) },
106
107         { }     /* Terminating entry */
108 };
109
110 MODULE_DEVICE_TABLE(usb, btusb_table);
111
112 static struct usb_device_id blacklist_table[] = {
113         /* CSR BlueCore devices */
114         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
115
116         /* Broadcom BCM2033 without firmware */
117         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
118
119         /* Atheros 3011 with sflash firmware */
120         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
121         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
122         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
123
124         /* Atheros AR9285 Malbec with sflash firmware */
125         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
126
127         /* Atheros 3012 with sflash firmware */
128         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
129
130         /* Atheros AR5BBU12 with sflash firmware */
131         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
132
133         /* Broadcom BCM2035 */
134         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
135         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
136         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
137
138         /* Broadcom BCM2045 */
139         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
140         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
141
142         /* IBM/Lenovo ThinkPad with Broadcom chip */
143         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
144         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
145
146         /* HP laptop with Broadcom chip */
147         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
148
149         /* Dell laptop with Broadcom chip */
150         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
151
152         /* Dell Wireless 370 and 410 devices */
153         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
154         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
155
156         /* Belkin F8T012 and F8T013 devices */
157         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
158         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
159
160         /* Asus WL-BTD202 device */
161         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
162
163         /* Kensington Bluetooth USB adapter */
164         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
165
166         /* RTX Telecom based adapters with buggy SCO support */
167         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
168         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
169
170         /* CONWISE Technology based adapters with buggy SCO support */
171         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
172
173         /* Digianswer devices */
174         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
175         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
176
177         /* CSR BlueCore Bluetooth Sniffer */
178         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
179
180         /* Frontline ComProbe Bluetooth Sniffer */
181         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
182
183         { }     /* Terminating entry */
184 };
185
186 #define BTUSB_MAX_ISOC_FRAMES   10
187
188 #define BTUSB_INTR_RUNNING      0
189 #define BTUSB_BULK_RUNNING      1
190 #define BTUSB_ISOC_RUNNING      2
191 #define BTUSB_SUSPENDING        3
192 #define BTUSB_DID_ISO_RESUME    4
193
194 struct btusb_data {
195         struct hci_dev       *hdev;
196         struct usb_device    *udev;
197         struct usb_interface *intf;
198         struct usb_interface *isoc;
199
200         spinlock_t lock;
201
202         unsigned long flags;
203
204         struct work_struct work;
205         struct work_struct waker;
206
207         struct usb_anchor tx_anchor;
208         struct usb_anchor intr_anchor;
209         struct usb_anchor bulk_anchor;
210         struct usb_anchor isoc_anchor;
211         struct usb_anchor deferred;
212         int tx_in_flight;
213         spinlock_t txlock;
214
215         struct usb_endpoint_descriptor *intr_ep;
216         struct usb_endpoint_descriptor *bulk_tx_ep;
217         struct usb_endpoint_descriptor *bulk_rx_ep;
218         struct usb_endpoint_descriptor *isoc_tx_ep;
219         struct usb_endpoint_descriptor *isoc_rx_ep;
220
221         __u8 cmdreq_type;
222
223         unsigned int sco_num;
224         int isoc_altsetting;
225         int suspend_count;
226 };
227
228 static int inc_tx(struct btusb_data *data)
229 {
230         unsigned long flags;
231         int rv;
232
233         spin_lock_irqsave(&data->txlock, flags);
234         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
235         if (!rv)
236                 data->tx_in_flight++;
237         spin_unlock_irqrestore(&data->txlock, flags);
238
239         return rv;
240 }
241
242 static void btusb_intr_complete(struct urb *urb)
243 {
244         struct hci_dev *hdev = urb->context;
245         struct btusb_data *data = hdev->driver_data;
246         int err;
247
248         BT_DBG("%s urb %p status %d count %d", hdev->name,
249                                         urb, urb->status, urb->actual_length);
250
251         if (!test_bit(HCI_RUNNING, &hdev->flags))
252                 return;
253
254         if (urb->status == 0) {
255                 hdev->stat.byte_rx += urb->actual_length;
256
257                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
258                                                 urb->transfer_buffer,
259                                                 urb->actual_length) < 0) {
260                         BT_ERR("%s corrupted event packet", hdev->name);
261                         hdev->stat.err_rx++;
262                 }
263         }
264
265         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
266                 return;
267
268         usb_mark_last_busy(data->udev);
269         usb_anchor_urb(urb, &data->intr_anchor);
270
271         err = usb_submit_urb(urb, GFP_ATOMIC);
272         if (err < 0) {
273                 /* -EPERM: urb is being killed;
274                  * -ENODEV: device got disconnected */
275                 if (err != -EPERM && err != -ENODEV)
276                         BT_ERR("%s urb %p failed to resubmit (%d)",
277                                                 hdev->name, urb, -err);
278                 usb_unanchor_urb(urb);
279         }
280 }
281
282 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
283 {
284         struct btusb_data *data = hdev->driver_data;
285         struct urb *urb;
286         unsigned char *buf;
287         unsigned int pipe;
288         int err, size;
289
290         BT_DBG("%s", hdev->name);
291
292         if (!data->intr_ep)
293                 return -ENODEV;
294
295         urb = usb_alloc_urb(0, mem_flags);
296         if (!urb)
297                 return -ENOMEM;
298
299         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
300
301         buf = kmalloc(size, mem_flags);
302         if (!buf) {
303                 usb_free_urb(urb);
304                 return -ENOMEM;
305         }
306
307         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
308
309         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
310                                                 btusb_intr_complete, hdev,
311                                                 data->intr_ep->bInterval);
312
313         urb->transfer_flags |= URB_FREE_BUFFER;
314
315         usb_anchor_urb(urb, &data->intr_anchor);
316
317         err = usb_submit_urb(urb, mem_flags);
318         if (err < 0) {
319                 if (err != -EPERM && err != -ENODEV)
320                         BT_ERR("%s urb %p submission failed (%d)",
321                                                 hdev->name, urb, -err);
322                 usb_unanchor_urb(urb);
323         }
324
325         usb_free_urb(urb);
326
327         return err;
328 }
329
330 static void btusb_bulk_complete(struct urb *urb)
331 {
332         struct hci_dev *hdev = urb->context;
333         struct btusb_data *data = hdev->driver_data;
334         int err;
335
336         BT_DBG("%s urb %p status %d count %d", hdev->name,
337                                         urb, urb->status, urb->actual_length);
338
339         if (!test_bit(HCI_RUNNING, &hdev->flags))
340                 return;
341
342         if (urb->status == 0) {
343                 hdev->stat.byte_rx += urb->actual_length;
344
345                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
346                                                 urb->transfer_buffer,
347                                                 urb->actual_length) < 0) {
348                         BT_ERR("%s corrupted ACL packet", hdev->name);
349                         hdev->stat.err_rx++;
350                 }
351         }
352
353         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
354                 return;
355
356         usb_anchor_urb(urb, &data->bulk_anchor);
357         usb_mark_last_busy(data->udev);
358
359         err = usb_submit_urb(urb, GFP_ATOMIC);
360         if (err < 0) {
361                 /* -EPERM: urb is being killed;
362                  * -ENODEV: device got disconnected */
363                 if (err != -EPERM && err != -ENODEV)
364                         BT_ERR("%s urb %p failed to resubmit (%d)",
365                                                 hdev->name, urb, -err);
366                 usb_unanchor_urb(urb);
367         }
368 }
369
370 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
371 {
372         struct btusb_data *data = hdev->driver_data;
373         struct urb *urb;
374         unsigned char *buf;
375         unsigned int pipe;
376         int err, size = HCI_MAX_FRAME_SIZE;
377
378         BT_DBG("%s", hdev->name);
379
380         if (!data->bulk_rx_ep)
381                 return -ENODEV;
382
383         urb = usb_alloc_urb(0, mem_flags);
384         if (!urb)
385                 return -ENOMEM;
386
387         buf = kmalloc(size, mem_flags);
388         if (!buf) {
389                 usb_free_urb(urb);
390                 return -ENOMEM;
391         }
392
393         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
394
395         usb_fill_bulk_urb(urb, data->udev, pipe,
396                                         buf, size, btusb_bulk_complete, hdev);
397
398         urb->transfer_flags |= URB_FREE_BUFFER;
399
400         usb_mark_last_busy(data->udev);
401         usb_anchor_urb(urb, &data->bulk_anchor);
402
403         err = usb_submit_urb(urb, mem_flags);
404         if (err < 0) {
405                 if (err != -EPERM && err != -ENODEV)
406                         BT_ERR("%s urb %p submission failed (%d)",
407                                                 hdev->name, urb, -err);
408                 usb_unanchor_urb(urb);
409         }
410
411         usb_free_urb(urb);
412
413         return err;
414 }
415
416 static void btusb_isoc_complete(struct urb *urb)
417 {
418         struct hci_dev *hdev = urb->context;
419         struct btusb_data *data = hdev->driver_data;
420         int i, err;
421
422         BT_DBG("%s urb %p status %d count %d", hdev->name,
423                                         urb, urb->status, urb->actual_length);
424
425         if (!test_bit(HCI_RUNNING, &hdev->flags))
426                 return;
427
428         if (urb->status == 0) {
429                 for (i = 0; i < urb->number_of_packets; i++) {
430                         unsigned int offset = urb->iso_frame_desc[i].offset;
431                         unsigned int length = urb->iso_frame_desc[i].actual_length;
432
433                         if (urb->iso_frame_desc[i].status)
434                                 continue;
435
436                         hdev->stat.byte_rx += length;
437
438                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
439                                                 urb->transfer_buffer + offset,
440                                                                 length) < 0) {
441                                 BT_ERR("%s corrupted SCO packet", hdev->name);
442                                 hdev->stat.err_rx++;
443                         }
444                 }
445         }
446
447         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
448                 return;
449
450         usb_anchor_urb(urb, &data->isoc_anchor);
451
452         err = usb_submit_urb(urb, GFP_ATOMIC);
453         if (err < 0) {
454                 /* -EPERM: urb is being killed;
455                  * -ENODEV: device got disconnected */
456                 if (err != -EPERM && err != -ENODEV)
457                         BT_ERR("%s urb %p failed to resubmit (%d)",
458                                                 hdev->name, urb, -err);
459                 usb_unanchor_urb(urb);
460         }
461 }
462
463 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
464 {
465         int i, offset = 0;
466
467         BT_DBG("len %d mtu %d", len, mtu);
468
469         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
470                                         i++, offset += mtu, len -= mtu) {
471                 urb->iso_frame_desc[i].offset = offset;
472                 urb->iso_frame_desc[i].length = mtu;
473         }
474
475         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
476                 urb->iso_frame_desc[i].offset = offset;
477                 urb->iso_frame_desc[i].length = len;
478                 i++;
479         }
480
481         urb->number_of_packets = i;
482 }
483
484 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
485 {
486         struct btusb_data *data = hdev->driver_data;
487         struct urb *urb;
488         unsigned char *buf;
489         unsigned int pipe;
490         int err, size;
491
492         BT_DBG("%s", hdev->name);
493
494         if (!data->isoc_rx_ep)
495                 return -ENODEV;
496
497         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
498         if (!urb)
499                 return -ENOMEM;
500
501         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
502                                                 BTUSB_MAX_ISOC_FRAMES;
503
504         buf = kmalloc(size, mem_flags);
505         if (!buf) {
506                 usb_free_urb(urb);
507                 return -ENOMEM;
508         }
509
510         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
511
512         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
513                                 hdev, data->isoc_rx_ep->bInterval);
514
515         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
516
517         __fill_isoc_descriptor(urb, size,
518                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
519
520         usb_anchor_urb(urb, &data->isoc_anchor);
521
522         err = usb_submit_urb(urb, mem_flags);
523         if (err < 0) {
524                 if (err != -EPERM && err != -ENODEV)
525                         BT_ERR("%s urb %p submission failed (%d)",
526                                                 hdev->name, urb, -err);
527                 usb_unanchor_urb(urb);
528         }
529
530         usb_free_urb(urb);
531
532         return err;
533 }
534
535 static void btusb_tx_complete(struct urb *urb)
536 {
537         struct sk_buff *skb = urb->context;
538         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
539         struct btusb_data *data = hdev->driver_data;
540
541         BT_DBG("%s urb %p status %d count %d", hdev->name,
542                                         urb, urb->status, urb->actual_length);
543
544         if (!test_bit(HCI_RUNNING, &hdev->flags))
545                 goto done;
546
547         if (!urb->status)
548                 hdev->stat.byte_tx += urb->transfer_buffer_length;
549         else
550                 hdev->stat.err_tx++;
551
552 done:
553         spin_lock(&data->txlock);
554         data->tx_in_flight--;
555         spin_unlock(&data->txlock);
556
557         kfree(urb->setup_packet);
558
559         kfree_skb(skb);
560 }
561
562 static void btusb_isoc_tx_complete(struct urb *urb)
563 {
564         struct sk_buff *skb = urb->context;
565         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
566
567         BT_DBG("%s urb %p status %d count %d", hdev->name,
568                                         urb, urb->status, urb->actual_length);
569
570         if (!test_bit(HCI_RUNNING, &hdev->flags))
571                 goto done;
572
573         if (!urb->status)
574                 hdev->stat.byte_tx += urb->transfer_buffer_length;
575         else
576                 hdev->stat.err_tx++;
577
578 done:
579         kfree(urb->setup_packet);
580
581         kfree_skb(skb);
582 }
583
584 static int btusb_open(struct hci_dev *hdev)
585 {
586         struct btusb_data *data = hdev->driver_data;
587         int err;
588
589         BT_DBG("%s", hdev->name);
590
591         err = usb_autopm_get_interface(data->intf);
592         if (err < 0)
593                 return err;
594
595         data->intf->needs_remote_wakeup = 1;
596
597         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
598                 goto done;
599
600         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
601                 goto done;
602
603         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
604         if (err < 0)
605                 goto failed;
606
607         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
608         if (err < 0) {
609                 usb_kill_anchored_urbs(&data->intr_anchor);
610                 goto failed;
611         }
612
613         set_bit(BTUSB_BULK_RUNNING, &data->flags);
614         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
615
616 done:
617         usb_autopm_put_interface(data->intf);
618         return 0;
619
620 failed:
621         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
622         clear_bit(HCI_RUNNING, &hdev->flags);
623         usb_autopm_put_interface(data->intf);
624         return err;
625 }
626
627 static void btusb_stop_traffic(struct btusb_data *data)
628 {
629         usb_kill_anchored_urbs(&data->intr_anchor);
630         usb_kill_anchored_urbs(&data->bulk_anchor);
631         usb_kill_anchored_urbs(&data->isoc_anchor);
632 }
633
634 static int btusb_close(struct hci_dev *hdev)
635 {
636         struct btusb_data *data = hdev->driver_data;
637         int err;
638
639         BT_DBG("%s", hdev->name);
640
641         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
642                 return 0;
643
644         cancel_work_sync(&data->work);
645         cancel_work_sync(&data->waker);
646
647         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
648         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
649         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
650
651         btusb_stop_traffic(data);
652         err = usb_autopm_get_interface(data->intf);
653         if (err < 0)
654                 goto failed;
655
656         data->intf->needs_remote_wakeup = 0;
657         usb_autopm_put_interface(data->intf);
658
659 failed:
660         usb_scuttle_anchored_urbs(&data->deferred);
661         return 0;
662 }
663
664 static int btusb_flush(struct hci_dev *hdev)
665 {
666         struct btusb_data *data = hdev->driver_data;
667
668         BT_DBG("%s", hdev->name);
669
670         usb_kill_anchored_urbs(&data->tx_anchor);
671
672         return 0;
673 }
674
675 static int btusb_send_frame(struct sk_buff *skb)
676 {
677         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
678         struct btusb_data *data = hdev->driver_data;
679         struct usb_ctrlrequest *dr;
680         struct urb *urb;
681         unsigned int pipe;
682         int err;
683
684         BT_DBG("%s", hdev->name);
685
686         if (!test_bit(HCI_RUNNING, &hdev->flags))
687                 return -EBUSY;
688
689         switch (bt_cb(skb)->pkt_type) {
690         case HCI_COMMAND_PKT:
691                 urb = usb_alloc_urb(0, GFP_ATOMIC);
692                 if (!urb)
693                         return -ENOMEM;
694
695                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
696                 if (!dr) {
697                         usb_free_urb(urb);
698                         return -ENOMEM;
699                 }
700
701                 dr->bRequestType = data->cmdreq_type;
702                 dr->bRequest     = 0;
703                 dr->wIndex       = 0;
704                 dr->wValue       = 0;
705                 dr->wLength      = __cpu_to_le16(skb->len);
706
707                 pipe = usb_sndctrlpipe(data->udev, 0x00);
708
709                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
710                                 skb->data, skb->len, btusb_tx_complete, skb);
711
712                 hdev->stat.cmd_tx++;
713                 break;
714
715         case HCI_ACLDATA_PKT:
716                 if (!data->bulk_tx_ep)
717                         return -ENODEV;
718
719                 urb = usb_alloc_urb(0, GFP_ATOMIC);
720                 if (!urb)
721                         return -ENOMEM;
722
723                 pipe = usb_sndbulkpipe(data->udev,
724                                         data->bulk_tx_ep->bEndpointAddress);
725
726                 usb_fill_bulk_urb(urb, data->udev, pipe,
727                                 skb->data, skb->len, btusb_tx_complete, skb);
728
729                 if (skb->priority >= HCI_PRIO_MAX - 1)
730                         urb->transfer_flags  = URB_ISO_ASAP;
731
732                 hdev->stat.acl_tx++;
733                 break;
734
735         case HCI_SCODATA_PKT:
736                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
737                         return -ENODEV;
738
739                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
740                 if (!urb)
741                         return -ENOMEM;
742
743                 pipe = usb_sndisocpipe(data->udev,
744                                         data->isoc_tx_ep->bEndpointAddress);
745
746                 usb_fill_int_urb(urb, data->udev, pipe,
747                                 skb->data, skb->len, btusb_isoc_tx_complete,
748                                 skb, data->isoc_tx_ep->bInterval);
749
750                 urb->transfer_flags  = URB_ISO_ASAP;
751
752                 __fill_isoc_descriptor(urb, skb->len,
753                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
754
755                 hdev->stat.sco_tx++;
756                 goto skip_waking;
757
758         default:
759                 return -EILSEQ;
760         }
761
762         err = inc_tx(data);
763         if (err) {
764                 usb_anchor_urb(urb, &data->deferred);
765                 schedule_work(&data->waker);
766                 err = 0;
767                 goto done;
768         }
769
770 skip_waking:
771         usb_anchor_urb(urb, &data->tx_anchor);
772
773         err = usb_submit_urb(urb, GFP_ATOMIC);
774         if (err < 0) {
775                 if (err != -EPERM && err != -ENODEV)
776                         BT_ERR("%s urb %p submission failed (%d)",
777                                                 hdev->name, urb, -err);
778                 kfree(urb->setup_packet);
779                 usb_unanchor_urb(urb);
780         } else {
781                 usb_mark_last_busy(data->udev);
782         }
783
784 done:
785         usb_free_urb(urb);
786         return err;
787 }
788
789 static void btusb_destruct(struct hci_dev *hdev)
790 {
791         struct btusb_data *data = hdev->driver_data;
792
793         BT_DBG("%s", hdev->name);
794
795         kfree(data);
796 }
797
798 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
799 {
800         struct btusb_data *data = hdev->driver_data;
801
802         BT_DBG("%s evt %d", hdev->name, evt);
803
804         if (hdev->conn_hash.sco_num != data->sco_num) {
805                 data->sco_num = hdev->conn_hash.sco_num;
806                 schedule_work(&data->work);
807         }
808 }
809
810 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
811 {
812         struct btusb_data *data = hdev->driver_data;
813         struct usb_interface *intf = data->isoc;
814         struct usb_endpoint_descriptor *ep_desc;
815         int i, err;
816
817         if (!data->isoc)
818                 return -ENODEV;
819
820         err = usb_set_interface(data->udev, 1, altsetting);
821         if (err < 0) {
822                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
823                 return err;
824         }
825
826         data->isoc_altsetting = altsetting;
827
828         data->isoc_tx_ep = NULL;
829         data->isoc_rx_ep = NULL;
830
831         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
832                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
833
834                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
835                         data->isoc_tx_ep = ep_desc;
836                         continue;
837                 }
838
839                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
840                         data->isoc_rx_ep = ep_desc;
841                         continue;
842                 }
843         }
844
845         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
846                 BT_ERR("%s invalid SCO descriptors", hdev->name);
847                 return -ENODEV;
848         }
849
850         return 0;
851 }
852
853 static void btusb_work(struct work_struct *work)
854 {
855         struct btusb_data *data = container_of(work, struct btusb_data, work);
856         struct hci_dev *hdev = data->hdev;
857         int err;
858
859         if (hdev->conn_hash.sco_num > 0) {
860                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
861                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
862                         if (err < 0) {
863                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
864                                 usb_kill_anchored_urbs(&data->isoc_anchor);
865                                 return;
866                         }
867
868                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
869                 }
870                 if (data->isoc_altsetting != 2) {
871                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
872                         usb_kill_anchored_urbs(&data->isoc_anchor);
873
874                         if (__set_isoc_interface(hdev, 2) < 0)
875                                 return;
876                 }
877
878                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
879                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
880                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
881                         else
882                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
883                 }
884         } else {
885                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
886                 usb_kill_anchored_urbs(&data->isoc_anchor);
887
888                 __set_isoc_interface(hdev, 0);
889                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
890                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
891         }
892 }
893
894 static void btusb_waker(struct work_struct *work)
895 {
896         struct btusb_data *data = container_of(work, struct btusb_data, waker);
897         int err;
898
899         err = usb_autopm_get_interface(data->intf);
900         if (err < 0)
901                 return;
902
903         usb_autopm_put_interface(data->intf);
904 }
905
906 static int btusb_probe(struct usb_interface *intf,
907                                 const struct usb_device_id *id)
908 {
909         struct usb_endpoint_descriptor *ep_desc;
910         struct btusb_data *data;
911         struct hci_dev *hdev;
912         int i, err;
913
914         BT_DBG("intf %p id %p", intf, id);
915
916         /* interface numbers are hardcoded in the spec */
917         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
918                 return -ENODEV;
919
920         if (!id->driver_info) {
921                 const struct usb_device_id *match;
922                 match = usb_match_id(intf, blacklist_table);
923                 if (match)
924                         id = match;
925         }
926
927         if (id->driver_info == BTUSB_IGNORE)
928                 return -ENODEV;
929
930         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
931                 return -ENODEV;
932
933         if (ignore_csr && id->driver_info & BTUSB_CSR)
934                 return -ENODEV;
935
936         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
937                 return -ENODEV;
938
939         if (id->driver_info & BTUSB_ATH3012) {
940                 struct usb_device *udev = interface_to_usbdev(intf);
941
942                 /* Old firmware would otherwise let ath3k driver load
943                  * patch and sysconfig files */
944                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
945                         return -ENODEV;
946         }
947
948         data = kzalloc(sizeof(*data), GFP_KERNEL);
949         if (!data)
950                 return -ENOMEM;
951
952         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
953                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
954
955                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
956                         data->intr_ep = ep_desc;
957                         continue;
958                 }
959
960                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
961                         data->bulk_tx_ep = ep_desc;
962                         continue;
963                 }
964
965                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
966                         data->bulk_rx_ep = ep_desc;
967                         continue;
968                 }
969         }
970
971         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
972                 kfree(data);
973                 return -ENODEV;
974         }
975
976         data->cmdreq_type = USB_TYPE_CLASS;
977
978         data->udev = interface_to_usbdev(intf);
979         data->intf = intf;
980
981         spin_lock_init(&data->lock);
982
983         INIT_WORK(&data->work, btusb_work);
984         INIT_WORK(&data->waker, btusb_waker);
985         spin_lock_init(&data->txlock);
986
987         init_usb_anchor(&data->tx_anchor);
988         init_usb_anchor(&data->intr_anchor);
989         init_usb_anchor(&data->bulk_anchor);
990         init_usb_anchor(&data->isoc_anchor);
991         init_usb_anchor(&data->deferred);
992
993         hdev = hci_alloc_dev();
994         if (!hdev) {
995                 kfree(data);
996                 return -ENOMEM;
997         }
998
999         hdev->bus = HCI_USB;
1000         hdev->driver_data = data;
1001
1002         data->hdev = hdev;
1003
1004         SET_HCIDEV_DEV(hdev, &intf->dev);
1005
1006         hdev->open     = btusb_open;
1007         hdev->close    = btusb_close;
1008         hdev->flush    = btusb_flush;
1009         hdev->send     = btusb_send_frame;
1010         hdev->destruct = btusb_destruct;
1011         hdev->notify   = btusb_notify;
1012
1013         hdev->owner = THIS_MODULE;
1014
1015         /* Interface numbers are hardcoded in the specification */
1016         data->isoc = usb_ifnum_to_if(data->udev, 1);
1017
1018         if (!reset)
1019                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1020
1021         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1022                 if (!disable_scofix)
1023                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1024         }
1025
1026         if (id->driver_info & BTUSB_BROKEN_ISOC)
1027                 data->isoc = NULL;
1028
1029         if (id->driver_info & BTUSB_DIGIANSWER) {
1030                 data->cmdreq_type = USB_TYPE_VENDOR;
1031                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1032         }
1033
1034         if (id->driver_info & BTUSB_CSR) {
1035                 struct usb_device *udev = data->udev;
1036
1037                 /* Old firmware would otherwise execute USB reset */
1038                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1039                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1040         }
1041
1042         if (id->driver_info & BTUSB_SNIFFER) {
1043                 struct usb_device *udev = data->udev;
1044
1045                 /* New sniffer firmware has crippled HCI interface */
1046                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1047                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1048
1049                 data->isoc = NULL;
1050         }
1051
1052         if (id->driver_info & BTUSB_BCM92035) {
1053                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1054                 struct sk_buff *skb;
1055
1056                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1057                 if (skb) {
1058                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1059                         skb_queue_tail(&hdev->driver_init, skb);
1060                 }
1061         }
1062
1063         if (data->isoc) {
1064                 err = usb_driver_claim_interface(&btusb_driver,
1065                                                         data->isoc, data);
1066                 if (err < 0) {
1067                         hci_free_dev(hdev);
1068                         kfree(data);
1069                         return err;
1070                 }
1071         }
1072
1073         err = hci_register_dev(hdev);
1074         if (err < 0) {
1075                 hci_free_dev(hdev);
1076                 kfree(data);
1077                 return err;
1078         }
1079
1080         usb_set_intfdata(intf, data);
1081
1082         return 0;
1083 }
1084
1085 static void btusb_disconnect(struct usb_interface *intf)
1086 {
1087         struct btusb_data *data = usb_get_intfdata(intf);
1088         struct hci_dev *hdev;
1089
1090         BT_DBG("intf %p", intf);
1091
1092         if (!data)
1093                 return;
1094
1095         hdev = data->hdev;
1096
1097         __hci_dev_hold(hdev);
1098
1099         usb_set_intfdata(data->intf, NULL);
1100
1101         if (data->isoc)
1102                 usb_set_intfdata(data->isoc, NULL);
1103
1104         hci_unregister_dev(hdev);
1105
1106         if (intf == data->isoc)
1107                 usb_driver_release_interface(&btusb_driver, data->intf);
1108         else if (data->isoc)
1109                 usb_driver_release_interface(&btusb_driver, data->isoc);
1110
1111         __hci_dev_put(hdev);
1112
1113         hci_free_dev(hdev);
1114 }
1115
1116 #ifdef CONFIG_PM
1117 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1118 {
1119         struct btusb_data *data = usb_get_intfdata(intf);
1120
1121         BT_DBG("intf %p", intf);
1122
1123         if (data->suspend_count++)
1124                 return 0;
1125
1126         spin_lock_irq(&data->txlock);
1127         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1128                 set_bit(BTUSB_SUSPENDING, &data->flags);
1129                 spin_unlock_irq(&data->txlock);
1130         } else {
1131                 spin_unlock_irq(&data->txlock);
1132                 data->suspend_count--;
1133                 return -EBUSY;
1134         }
1135
1136         cancel_work_sync(&data->work);
1137
1138         btusb_stop_traffic(data);
1139         usb_kill_anchored_urbs(&data->tx_anchor);
1140
1141         return 0;
1142 }
1143
1144 static void play_deferred(struct btusb_data *data)
1145 {
1146         struct urb *urb;
1147         int err;
1148
1149         while ((urb = usb_get_from_anchor(&data->deferred))) {
1150                 err = usb_submit_urb(urb, GFP_ATOMIC);
1151                 if (err < 0)
1152                         break;
1153
1154                 data->tx_in_flight++;
1155         }
1156         usb_scuttle_anchored_urbs(&data->deferred);
1157 }
1158
1159 static int btusb_resume(struct usb_interface *intf)
1160 {
1161         struct btusb_data *data = usb_get_intfdata(intf);
1162         struct hci_dev *hdev = data->hdev;
1163         int err = 0;
1164
1165         BT_DBG("intf %p", intf);
1166
1167         if (--data->suspend_count)
1168                 return 0;
1169
1170         if (!test_bit(HCI_RUNNING, &hdev->flags))
1171                 goto done;
1172
1173         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1174                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1175                 if (err < 0) {
1176                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1177                         goto failed;
1178                 }
1179         }
1180
1181         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1182                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1183                 if (err < 0) {
1184                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1185                         goto failed;
1186                 }
1187
1188                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1189         }
1190
1191         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1192                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1193                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1194                 else
1195                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1196         }
1197
1198         spin_lock_irq(&data->txlock);
1199         play_deferred(data);
1200         clear_bit(BTUSB_SUSPENDING, &data->flags);
1201         spin_unlock_irq(&data->txlock);
1202         schedule_work(&data->work);
1203
1204         return 0;
1205
1206 failed:
1207         usb_scuttle_anchored_urbs(&data->deferred);
1208 done:
1209         spin_lock_irq(&data->txlock);
1210         clear_bit(BTUSB_SUSPENDING, &data->flags);
1211         spin_unlock_irq(&data->txlock);
1212
1213         return err;
1214 }
1215 #endif
1216
1217 static struct usb_driver btusb_driver = {
1218         .name           = "btusb",
1219         .probe          = btusb_probe,
1220         .disconnect     = btusb_disconnect,
1221 #ifdef CONFIG_PM
1222         .suspend        = btusb_suspend,
1223         .resume         = btusb_resume,
1224 #endif
1225         .id_table       = btusb_table,
1226         .supports_autosuspend = 1,
1227 };
1228
1229 module_usb_driver(btusb_driver);
1230
1231 module_param(ignore_dga, bool, 0644);
1232 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1233
1234 module_param(ignore_csr, bool, 0644);
1235 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1236
1237 module_param(ignore_sniffer, bool, 0644);
1238 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1239
1240 module_param(disable_scofix, bool, 0644);
1241 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1242
1243 module_param(force_scofix, bool, 0644);
1244 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1245
1246 module_param(reset, bool, 0644);
1247 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1248
1249 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1250 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1251 MODULE_VERSION(VERSION);
1252 MODULE_LICENSE("GPL");