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Bluetooth: Remove __hci_dev_put/hold
[GitHub/mt8127/android_kernel_alcatel_ttab.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 /* 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 hdev->stat.acl_tx++;
730 break;
731
732 case HCI_SCODATA_PKT:
733 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
734 return -ENODEV;
735
736 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
737 if (!urb)
738 return -ENOMEM;
739
740 pipe = usb_sndisocpipe(data->udev,
741 data->isoc_tx_ep->bEndpointAddress);
742
743 usb_fill_int_urb(urb, data->udev, pipe,
744 skb->data, skb->len, btusb_isoc_tx_complete,
745 skb, data->isoc_tx_ep->bInterval);
746
747 urb->transfer_flags = URB_ISO_ASAP;
748
749 __fill_isoc_descriptor(urb, skb->len,
750 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
751
752 hdev->stat.sco_tx++;
753 goto skip_waking;
754
755 default:
756 return -EILSEQ;
757 }
758
759 err = inc_tx(data);
760 if (err) {
761 usb_anchor_urb(urb, &data->deferred);
762 schedule_work(&data->waker);
763 err = 0;
764 goto done;
765 }
766
767 skip_waking:
768 usb_anchor_urb(urb, &data->tx_anchor);
769
770 err = usb_submit_urb(urb, GFP_ATOMIC);
771 if (err < 0) {
772 if (err != -EPERM && err != -ENODEV)
773 BT_ERR("%s urb %p submission failed (%d)",
774 hdev->name, urb, -err);
775 kfree(urb->setup_packet);
776 usb_unanchor_urb(urb);
777 } else {
778 usb_mark_last_busy(data->udev);
779 }
780
781 done:
782 usb_free_urb(urb);
783 return err;
784 }
785
786 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
787 {
788 struct btusb_data *data = hdev->driver_data;
789
790 BT_DBG("%s evt %d", hdev->name, evt);
791
792 if (hdev->conn_hash.sco_num != data->sco_num) {
793 data->sco_num = hdev->conn_hash.sco_num;
794 schedule_work(&data->work);
795 }
796 }
797
798 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
799 {
800 struct btusb_data *data = hdev->driver_data;
801 struct usb_interface *intf = data->isoc;
802 struct usb_endpoint_descriptor *ep_desc;
803 int i, err;
804
805 if (!data->isoc)
806 return -ENODEV;
807
808 err = usb_set_interface(data->udev, 1, altsetting);
809 if (err < 0) {
810 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
811 return err;
812 }
813
814 data->isoc_altsetting = altsetting;
815
816 data->isoc_tx_ep = NULL;
817 data->isoc_rx_ep = NULL;
818
819 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
820 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
821
822 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
823 data->isoc_tx_ep = ep_desc;
824 continue;
825 }
826
827 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
828 data->isoc_rx_ep = ep_desc;
829 continue;
830 }
831 }
832
833 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
834 BT_ERR("%s invalid SCO descriptors", hdev->name);
835 return -ENODEV;
836 }
837
838 return 0;
839 }
840
841 static void btusb_work(struct work_struct *work)
842 {
843 struct btusb_data *data = container_of(work, struct btusb_data, work);
844 struct hci_dev *hdev = data->hdev;
845 int err;
846
847 if (hdev->conn_hash.sco_num > 0) {
848 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
849 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
850 if (err < 0) {
851 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
852 usb_kill_anchored_urbs(&data->isoc_anchor);
853 return;
854 }
855
856 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
857 }
858 if (data->isoc_altsetting != 2) {
859 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
860 usb_kill_anchored_urbs(&data->isoc_anchor);
861
862 if (__set_isoc_interface(hdev, 2) < 0)
863 return;
864 }
865
866 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
867 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
868 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
869 else
870 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
871 }
872 } else {
873 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
874 usb_kill_anchored_urbs(&data->isoc_anchor);
875
876 __set_isoc_interface(hdev, 0);
877 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
878 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
879 }
880 }
881
882 static void btusb_waker(struct work_struct *work)
883 {
884 struct btusb_data *data = container_of(work, struct btusb_data, waker);
885 int err;
886
887 err = usb_autopm_get_interface(data->intf);
888 if (err < 0)
889 return;
890
891 usb_autopm_put_interface(data->intf);
892 }
893
894 static int btusb_probe(struct usb_interface *intf,
895 const struct usb_device_id *id)
896 {
897 struct usb_endpoint_descriptor *ep_desc;
898 struct btusb_data *data;
899 struct hci_dev *hdev;
900 int i, err;
901
902 BT_DBG("intf %p id %p", intf, id);
903
904 /* interface numbers are hardcoded in the spec */
905 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
906 return -ENODEV;
907
908 if (!id->driver_info) {
909 const struct usb_device_id *match;
910 match = usb_match_id(intf, blacklist_table);
911 if (match)
912 id = match;
913 }
914
915 if (id->driver_info == BTUSB_IGNORE)
916 return -ENODEV;
917
918 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
919 return -ENODEV;
920
921 if (ignore_csr && id->driver_info & BTUSB_CSR)
922 return -ENODEV;
923
924 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
925 return -ENODEV;
926
927 if (id->driver_info & BTUSB_ATH3012) {
928 struct usb_device *udev = interface_to_usbdev(intf);
929
930 /* Old firmware would otherwise let ath3k driver load
931 * patch and sysconfig files */
932 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
933 return -ENODEV;
934 }
935
936 data = kzalloc(sizeof(*data), GFP_KERNEL);
937 if (!data)
938 return -ENOMEM;
939
940 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
941 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
942
943 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
944 data->intr_ep = ep_desc;
945 continue;
946 }
947
948 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
949 data->bulk_tx_ep = ep_desc;
950 continue;
951 }
952
953 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
954 data->bulk_rx_ep = ep_desc;
955 continue;
956 }
957 }
958
959 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
960 kfree(data);
961 return -ENODEV;
962 }
963
964 data->cmdreq_type = USB_TYPE_CLASS;
965
966 data->udev = interface_to_usbdev(intf);
967 data->intf = intf;
968
969 spin_lock_init(&data->lock);
970
971 INIT_WORK(&data->work, btusb_work);
972 INIT_WORK(&data->waker, btusb_waker);
973 spin_lock_init(&data->txlock);
974
975 init_usb_anchor(&data->tx_anchor);
976 init_usb_anchor(&data->intr_anchor);
977 init_usb_anchor(&data->bulk_anchor);
978 init_usb_anchor(&data->isoc_anchor);
979 init_usb_anchor(&data->deferred);
980
981 hdev = hci_alloc_dev();
982 if (!hdev) {
983 kfree(data);
984 return -ENOMEM;
985 }
986
987 hdev->bus = HCI_USB;
988 hdev->driver_data = data;
989
990 data->hdev = hdev;
991
992 SET_HCIDEV_DEV(hdev, &intf->dev);
993
994 hdev->open = btusb_open;
995 hdev->close = btusb_close;
996 hdev->flush = btusb_flush;
997 hdev->send = btusb_send_frame;
998 hdev->notify = btusb_notify;
999
1000 /* Interface numbers are hardcoded in the specification */
1001 data->isoc = usb_ifnum_to_if(data->udev, 1);
1002
1003 if (!reset)
1004 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1005
1006 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1007 if (!disable_scofix)
1008 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1009 }
1010
1011 if (id->driver_info & BTUSB_BROKEN_ISOC)
1012 data->isoc = NULL;
1013
1014 if (id->driver_info & BTUSB_DIGIANSWER) {
1015 data->cmdreq_type = USB_TYPE_VENDOR;
1016 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1017 }
1018
1019 if (id->driver_info & BTUSB_CSR) {
1020 struct usb_device *udev = data->udev;
1021
1022 /* Old firmware would otherwise execute USB reset */
1023 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1024 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1025 }
1026
1027 if (id->driver_info & BTUSB_SNIFFER) {
1028 struct usb_device *udev = data->udev;
1029
1030 /* New sniffer firmware has crippled HCI interface */
1031 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1032 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1033
1034 data->isoc = NULL;
1035 }
1036
1037 if (id->driver_info & BTUSB_BCM92035) {
1038 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1039 struct sk_buff *skb;
1040
1041 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1042 if (skb) {
1043 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1044 skb_queue_tail(&hdev->driver_init, skb);
1045 }
1046 }
1047
1048 if (data->isoc) {
1049 err = usb_driver_claim_interface(&btusb_driver,
1050 data->isoc, data);
1051 if (err < 0) {
1052 hci_free_dev(hdev);
1053 kfree(data);
1054 return err;
1055 }
1056 }
1057
1058 err = hci_register_dev(hdev);
1059 if (err < 0) {
1060 hci_free_dev(hdev);
1061 kfree(data);
1062 return err;
1063 }
1064
1065 usb_set_intfdata(intf, data);
1066
1067 return 0;
1068 }
1069
1070 static void btusb_disconnect(struct usb_interface *intf)
1071 {
1072 struct btusb_data *data = usb_get_intfdata(intf);
1073 struct hci_dev *hdev;
1074
1075 BT_DBG("intf %p", intf);
1076
1077 if (!data)
1078 return;
1079
1080 hdev = data->hdev;
1081
1082 hci_dev_hold(hdev);
1083
1084 usb_set_intfdata(data->intf, NULL);
1085
1086 if (data->isoc)
1087 usb_set_intfdata(data->isoc, NULL);
1088
1089 hci_unregister_dev(hdev);
1090
1091 if (intf == data->isoc)
1092 usb_driver_release_interface(&btusb_driver, data->intf);
1093 else if (data->isoc)
1094 usb_driver_release_interface(&btusb_driver, data->isoc);
1095
1096 hci_dev_put(hdev);
1097
1098 hci_free_dev(hdev);
1099 kfree(data);
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 (!(PMSG_IS_AUTO(message) && 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 module_usb_driver(btusb_driver);
1216
1217 module_param(ignore_dga, bool, 0644);
1218 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1219
1220 module_param(ignore_csr, bool, 0644);
1221 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1222
1223 module_param(ignore_sniffer, bool, 0644);
1224 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1225
1226 module_param(disable_scofix, bool, 0644);
1227 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1228
1229 module_param(force_scofix, bool, 0644);
1230 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1231
1232 module_param(reset, bool, 0644);
1233 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1234
1235 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1236 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1237 MODULE_VERSION(VERSION);
1238 MODULE_LICENSE("GPL");
kernel source for telekom puls (alcatel/mediatek)