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OMAP3: PM: Prevented DVFS state switches when enabling off-mode
[linux-ginger.git] / drivers / bluetooth / btusb.c
blob7ba91aa3fe8b8898cad41d96f35f1bd9bf221f3b
1 /*
2 *
3 * Generic Bluetooth USB driver
4 *
5 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
6 *
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/slab.h>
28 #include <linux/types.h>
29 #include <linux/sched.h>
30 #include <linux/errno.h>
31 #include <linux/skbuff.h>
32
33 #include <linux/usb.h>
34
35 #include <net/bluetooth/bluetooth.h>
36 #include <net/bluetooth/hci_core.h>
37
38 #define VERSION "0.6"
39
40 static int ignore_dga;
41 static int ignore_csr;
42 static int ignore_sniffer;
43 static int disable_scofix;
44 static int force_scofix;
45
46 static int reset = 1;
47
48 static struct usb_driver btusb_driver;
49
50 #define BTUSB_IGNORE 0x01
51 #define BTUSB_DIGIANSWER 0x02
52 #define BTUSB_CSR 0x04
53 #define BTUSB_SNIFFER 0x08
54 #define BTUSB_BCM92035 0x10
55 #define BTUSB_BROKEN_ISOC 0x20
56 #define BTUSB_WRONG_SCO_MTU 0x40
57
58 static struct usb_device_id btusb_table[] = {
59 /* Generic Bluetooth USB device */
60 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
61
62 /* AVM BlueFRITZ! USB v2.0 */
63 { USB_DEVICE(0x057c, 0x3800) },
64
65 /* Bluetooth Ultraport Module from IBM */
66 { USB_DEVICE(0x04bf, 0x030a) },
67
68 /* ALPS Modules with non-standard id */
69 { USB_DEVICE(0x044e, 0x3001) },
70 { USB_DEVICE(0x044e, 0x3002) },
71
72 /* Ericsson with non-standard id */
73 { USB_DEVICE(0x0bdb, 0x1002) },
74
75 /* Canyon CN-BTU1 with HID interfaces */
76 { USB_DEVICE(0x0c10, 0x0000) },
77
78 { } /* Terminating entry */
79 };
80
81 MODULE_DEVICE_TABLE(usb, btusb_table);
82
83 static struct usb_device_id blacklist_table[] = {
84 /* CSR BlueCore devices */
85 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
86
87 /* Broadcom BCM2033 without firmware */
88 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
89
90 /* Broadcom BCM2035 */
91 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
92 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
93 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
94
95 /* Broadcom BCM2045 */
96 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
97 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
98
99 /* IBM/Lenovo ThinkPad with Broadcom chip */
100 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
101 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
102
103 /* HP laptop with Broadcom chip */
104 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
105
106 /* Dell laptop with Broadcom chip */
107 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
108
109 /* Dell Wireless 370 and 410 devices */
110 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
111 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
112
113 /* Belkin F8T012 and F8T013 devices */
114 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
115 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
116
117 /* Asus WL-BTD202 device */
118 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
119
120 /* Kensington Bluetooth USB adapter */
121 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
122
123 /* RTX Telecom based adapters with buggy SCO support */
124 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
125 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
126
127 /* CONWISE Technology based adapters with buggy SCO support */
128 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
129
130 /* Digianswer devices */
131 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
132 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
133
134 /* CSR BlueCore Bluetooth Sniffer */
135 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
136
137 /* Frontline ComProbe Bluetooth Sniffer */
138 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
139
140 { } /* Terminating entry */
141 };
142
143 #define BTUSB_MAX_ISOC_FRAMES 10
144
145 #define BTUSB_INTR_RUNNING 0
146 #define BTUSB_BULK_RUNNING 1
147 #define BTUSB_ISOC_RUNNING 2
148 #define BTUSB_SUSPENDING 3
149
150 struct btusb_data {
151 struct hci_dev *hdev;
152 struct usb_device *udev;
153 struct usb_interface *intf;
154 struct usb_interface *isoc;
155
156 spinlock_t lock;
157
158 unsigned long flags;
159
160 struct work_struct work;
161 struct work_struct waker;
162
163 struct usb_anchor tx_anchor;
164 struct usb_anchor intr_anchor;
165 struct usb_anchor bulk_anchor;
166 struct usb_anchor isoc_anchor;
167 struct usb_anchor deferred;
168 int tx_in_flight;
169 spinlock_t txlock;
170
171 struct usb_endpoint_descriptor *intr_ep;
172 struct usb_endpoint_descriptor *bulk_tx_ep;
173 struct usb_endpoint_descriptor *bulk_rx_ep;
174 struct usb_endpoint_descriptor *isoc_tx_ep;
175 struct usb_endpoint_descriptor *isoc_rx_ep;
176
177 __u8 cmdreq_type;
178
179 unsigned int sco_num;
180 int isoc_altsetting;
181 int suspend_count;
182 int did_iso_resume:1;
183 };
184
185 static int inc_tx(struct btusb_data *data)
186 {
187 unsigned long flags;
188 int rv;
189
190 spin_lock_irqsave(&data->txlock, flags);
191 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
192 if (!rv)
193 data->tx_in_flight++;
194 spin_unlock_irqrestore(&data->txlock, flags);
195
196 return rv;
197 }
198
199 static void btusb_intr_complete(struct urb *urb)
200 {
201 struct hci_dev *hdev = urb->context;
202 struct btusb_data *data = hdev->driver_data;
203 int err;
204
205 BT_DBG("%s urb %p status %d count %d", hdev->name,
206 urb, urb->status, urb->actual_length);
207
208 if (!test_bit(HCI_RUNNING, &hdev->flags))
209 return;
210
211 if (urb->status == 0) {
212 hdev->stat.byte_rx += urb->actual_length;
213
214 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
215 urb->transfer_buffer,
216 urb->actual_length) < 0) {
217 BT_ERR("%s corrupted event packet", hdev->name);
218 hdev->stat.err_rx++;
219 }
220 }
221
222 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
223 return;
224
225 usb_mark_last_busy(data->udev);
226 usb_anchor_urb(urb, &data->intr_anchor);
227
228 err = usb_submit_urb(urb, GFP_ATOMIC);
229 if (err < 0) {
230 BT_ERR("%s urb %p failed to resubmit (%d)",
231 hdev->name, urb, -err);
232 usb_unanchor_urb(urb);
233 }
234 }
235
236 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
237 {
238 struct btusb_data *data = hdev->driver_data;
239 struct urb *urb;
240 unsigned char *buf;
241 unsigned int pipe;
242 int err, size;
243
244 BT_DBG("%s", hdev->name);
245
246 if (!data->intr_ep)
247 return -ENODEV;
248
249 urb = usb_alloc_urb(0, mem_flags);
250 if (!urb)
251 return -ENOMEM;
252
253 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
254
255 buf = kmalloc(size, mem_flags);
256 if (!buf) {
257 usb_free_urb(urb);
258 return -ENOMEM;
259 }
260
261 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
262
263 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
264 btusb_intr_complete, hdev,
265 data->intr_ep->bInterval);
266
267 urb->transfer_flags |= URB_FREE_BUFFER;
268
269 usb_anchor_urb(urb, &data->intr_anchor);
270
271 err = usb_submit_urb(urb, mem_flags);
272 if (err < 0) {
273 BT_ERR("%s urb %p submission failed (%d)",
274 hdev->name, urb, -err);
275 usb_unanchor_urb(urb);
276 }
277
278 usb_free_urb(urb);
279
280 return err;
281 }
282
283 static void btusb_bulk_complete(struct urb *urb)
284 {
285 struct hci_dev *hdev = urb->context;
286 struct btusb_data *data = hdev->driver_data;
287 int err;
288
289 BT_DBG("%s urb %p status %d count %d", hdev->name,
290 urb, urb->status, urb->actual_length);
291
292 if (!test_bit(HCI_RUNNING, &hdev->flags))
293 return;
294
295 if (urb->status == 0) {
296 hdev->stat.byte_rx += urb->actual_length;
297
298 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
299 urb->transfer_buffer,
300 urb->actual_length) < 0) {
301 BT_ERR("%s corrupted ACL packet", hdev->name);
302 hdev->stat.err_rx++;
303 }
304 }
305
306 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
307 return;
308
309 usb_anchor_urb(urb, &data->bulk_anchor);
310
311 err = usb_submit_urb(urb, GFP_ATOMIC);
312 if (err < 0) {
313 BT_ERR("%s urb %p failed to resubmit (%d)",
314 hdev->name, urb, -err);
315 usb_unanchor_urb(urb);
316 }
317 }
318
319 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
320 {
321 struct btusb_data *data = hdev->driver_data;
322 struct urb *urb;
323 unsigned char *buf;
324 unsigned int pipe;
325 int err, size = HCI_MAX_FRAME_SIZE;
326
327 BT_DBG("%s", hdev->name);
328
329 if (!data->bulk_rx_ep)
330 return -ENODEV;
331
332 urb = usb_alloc_urb(0, mem_flags);
333 if (!urb)
334 return -ENOMEM;
335
336 buf = kmalloc(size, mem_flags);
337 if (!buf) {
338 usb_free_urb(urb);
339 return -ENOMEM;
340 }
341
342 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
343
344 usb_fill_bulk_urb(urb, data->udev, pipe,
345 buf, size, btusb_bulk_complete, hdev);
346
347 urb->transfer_flags |= URB_FREE_BUFFER;
348
349 usb_mark_last_busy(data->udev);
350 usb_anchor_urb(urb, &data->bulk_anchor);
351
352 err = usb_submit_urb(urb, mem_flags);
353 if (err < 0) {
354 BT_ERR("%s urb %p submission failed (%d)",
355 hdev->name, urb, -err);
356 usb_unanchor_urb(urb);
357 }
358
359 usb_free_urb(urb);
360
361 return err;
362 }
363
364 static void btusb_isoc_complete(struct urb *urb)
365 {
366 struct hci_dev *hdev = urb->context;
367 struct btusb_data *data = hdev->driver_data;
368 int i, err;
369
370 BT_DBG("%s urb %p status %d count %d", hdev->name,
371 urb, urb->status, urb->actual_length);
372
373 if (!test_bit(HCI_RUNNING, &hdev->flags))
374 return;
375
376 if (urb->status == 0) {
377 for (i = 0; i < urb->number_of_packets; i++) {
378 unsigned int offset = urb->iso_frame_desc[i].offset;
379 unsigned int length = urb->iso_frame_desc[i].actual_length;
380
381 if (urb->iso_frame_desc[i].status)
382 continue;
383
384 hdev->stat.byte_rx += length;
385
386 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
387 urb->transfer_buffer + offset,
388 length) < 0) {
389 BT_ERR("%s corrupted SCO packet", hdev->name);
390 hdev->stat.err_rx++;
391 }
392 }
393 }
394
395 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
396 return;
397
398 usb_anchor_urb(urb, &data->isoc_anchor);
399
400 err = usb_submit_urb(urb, GFP_ATOMIC);
401 if (err < 0) {
402 BT_ERR("%s urb %p failed to resubmit (%d)",
403 hdev->name, urb, -err);
404 usb_unanchor_urb(urb);
405 }
406 }
407
408 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
409 {
410 int i, offset = 0;
411
412 BT_DBG("len %d mtu %d", len, mtu);
413
414 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
415 i++, offset += mtu, len -= mtu) {
416 urb->iso_frame_desc[i].offset = offset;
417 urb->iso_frame_desc[i].length = mtu;
418 }
419
420 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
421 urb->iso_frame_desc[i].offset = offset;
422 urb->iso_frame_desc[i].length = len;
423 i++;
424 }
425
426 urb->number_of_packets = i;
427 }
428
429 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
430 {
431 struct btusb_data *data = hdev->driver_data;
432 struct urb *urb;
433 unsigned char *buf;
434 unsigned int pipe;
435 int err, size;
436
437 BT_DBG("%s", hdev->name);
438
439 if (!data->isoc_rx_ep)
440 return -ENODEV;
441
442 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
443 if (!urb)
444 return -ENOMEM;
445
446 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
447 BTUSB_MAX_ISOC_FRAMES;
448
449 buf = kmalloc(size, mem_flags);
450 if (!buf) {
451 usb_free_urb(urb);
452 return -ENOMEM;
453 }
454
455 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
456
457 urb->dev = data->udev;
458 urb->pipe = pipe;
459 urb->context = hdev;
460 urb->complete = btusb_isoc_complete;
461 urb->interval = data->isoc_rx_ep->bInterval;
462
463 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
464 urb->transfer_buffer = buf;
465 urb->transfer_buffer_length = size;
466
467 __fill_isoc_descriptor(urb, size,
468 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
469
470 usb_anchor_urb(urb, &data->isoc_anchor);
471
472 err = usb_submit_urb(urb, mem_flags);
473 if (err < 0) {
474 BT_ERR("%s urb %p submission failed (%d)",
475 hdev->name, urb, -err);
476 usb_unanchor_urb(urb);
477 }
478
479 usb_free_urb(urb);
480
481 return err;
482 }
483
484 static void btusb_tx_complete(struct urb *urb)
485 {
486 struct sk_buff *skb = urb->context;
487 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
488 struct btusb_data *data = hdev->driver_data;
489
490 BT_DBG("%s urb %p status %d count %d", hdev->name,
491 urb, urb->status, urb->actual_length);
492
493 if (!test_bit(HCI_RUNNING, &hdev->flags))
494 goto done;
495
496 if (!urb->status)
497 hdev->stat.byte_tx += urb->transfer_buffer_length;
498 else
499 hdev->stat.err_tx++;
500
501 done:
502 spin_lock(&data->txlock);
503 data->tx_in_flight--;
504 spin_unlock(&data->txlock);
505
506 kfree(urb->setup_packet);
507
508 kfree_skb(skb);
509 }
510
511 static void btusb_isoc_tx_complete(struct urb *urb)
512 {
513 struct sk_buff *skb = urb->context;
514 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
515
516 BT_DBG("%s urb %p status %d count %d", hdev->name,
517 urb, urb->status, urb->actual_length);
518
519 if (!test_bit(HCI_RUNNING, &hdev->flags))
520 goto done;
521
522 if (!urb->status)
523 hdev->stat.byte_tx += urb->transfer_buffer_length;
524 else
525 hdev->stat.err_tx++;
526
527 done:
528 kfree(urb->setup_packet);
529
530 kfree_skb(skb);
531 }
532
533 static int btusb_open(struct hci_dev *hdev)
534 {
535 struct btusb_data *data = hdev->driver_data;
536 int err;
537
538 BT_DBG("%s", hdev->name);
539
540 err = usb_autopm_get_interface(data->intf);
541 if (err < 0)
542 return err;
543
544 data->intf->needs_remote_wakeup = 1;
545
546 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
547 goto done;
548
549 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
550 goto done;
551
552 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
553 if (err < 0)
554 goto failed;
555
556 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
557 if (err < 0) {
558 usb_kill_anchored_urbs(&data->intr_anchor);
559 goto failed;
560 }
561
562 set_bit(BTUSB_BULK_RUNNING, &data->flags);
563 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
564
565 done:
566 usb_autopm_put_interface(data->intf);
567 return 0;
568
569 failed:
570 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
571 clear_bit(HCI_RUNNING, &hdev->flags);
572 usb_autopm_put_interface(data->intf);
573 return err;
574 }
575
576 static void btusb_stop_traffic(struct btusb_data *data)
577 {
578 usb_kill_anchored_urbs(&data->intr_anchor);
579 usb_kill_anchored_urbs(&data->bulk_anchor);
580 usb_kill_anchored_urbs(&data->isoc_anchor);
581 }
582
583 static int btusb_close(struct hci_dev *hdev)
584 {
585 struct btusb_data *data = hdev->driver_data;
586 int err;
587
588 BT_DBG("%s", hdev->name);
589
590 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
591 return 0;
592
593 cancel_work_sync(&data->work);
594
595 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
596 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
597 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
598
599 btusb_stop_traffic(data);
600 err = usb_autopm_get_interface(data->intf);
601 if (err < 0)
602 return 0;
603
604 data->intf->needs_remote_wakeup = 0;
605 usb_autopm_put_interface(data->intf);
606
607 return 0;
608 }
609
610 static int btusb_flush(struct hci_dev *hdev)
611 {
612 struct btusb_data *data = hdev->driver_data;
613
614 BT_DBG("%s", hdev->name);
615
616 usb_kill_anchored_urbs(&data->tx_anchor);
617
618 return 0;
619 }
620
621 static int btusb_send_frame(struct sk_buff *skb)
622 {
623 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
624 struct btusb_data *data = hdev->driver_data;
625 struct usb_ctrlrequest *dr;
626 struct urb *urb;
627 unsigned int pipe;
628 int err;
629
630 BT_DBG("%s", hdev->name);
631
632 if (!test_bit(HCI_RUNNING, &hdev->flags))
633 return -EBUSY;
634
635 switch (bt_cb(skb)->pkt_type) {
636 case HCI_COMMAND_PKT:
637 urb = usb_alloc_urb(0, GFP_ATOMIC);
638 if (!urb)
639 return -ENOMEM;
640
641 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
642 if (!dr) {
643 usb_free_urb(urb);
644 return -ENOMEM;
645 }
646
647 dr->bRequestType = data->cmdreq_type;
648 dr->bRequest = 0;
649 dr->wIndex = 0;
650 dr->wValue = 0;
651 dr->wLength = __cpu_to_le16(skb->len);
652
653 pipe = usb_sndctrlpipe(data->udev, 0x00);
654
655 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
656 skb->data, skb->len, btusb_tx_complete, skb);
657
658 hdev->stat.cmd_tx++;
659 break;
660
661 case HCI_ACLDATA_PKT:
662 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
663 return -ENODEV;
664
665 urb = usb_alloc_urb(0, GFP_ATOMIC);
666 if (!urb)
667 return -ENOMEM;
668
669 pipe = usb_sndbulkpipe(data->udev,
670 data->bulk_tx_ep->bEndpointAddress);
671
672 usb_fill_bulk_urb(urb, data->udev, pipe,
673 skb->data, skb->len, btusb_tx_complete, skb);
674
675 hdev->stat.acl_tx++;
676 break;
677
678 case HCI_SCODATA_PKT:
679 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
680 return -ENODEV;
681
682 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
683 if (!urb)
684 return -ENOMEM;
685
686 pipe = usb_sndisocpipe(data->udev,
687 data->isoc_tx_ep->bEndpointAddress);
688
689 urb->dev = data->udev;
690 urb->pipe = pipe;
691 urb->context = skb;
692 urb->complete = btusb_isoc_tx_complete;
693 urb->interval = data->isoc_tx_ep->bInterval;
694
695 urb->transfer_flags = URB_ISO_ASAP;
696 urb->transfer_buffer = skb->data;
697 urb->transfer_buffer_length = skb->len;
698
699 __fill_isoc_descriptor(urb, skb->len,
700 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
701
702 hdev->stat.sco_tx++;
703 goto skip_waking;
704
705 default:
706 return -EILSEQ;
707 }
708
709 err = inc_tx(data);
710 if (err) {
711 usb_anchor_urb(urb, &data->deferred);
712 schedule_work(&data->waker);
713 err = 0;
714 goto done;
715 }
716
717 skip_waking:
718 usb_anchor_urb(urb, &data->tx_anchor);
719
720 err = usb_submit_urb(urb, GFP_ATOMIC);
721 if (err < 0) {
722 BT_ERR("%s urb %p submission failed", hdev->name, urb);
723 kfree(urb->setup_packet);
724 usb_unanchor_urb(urb);
725 } else {
726 usb_mark_last_busy(data->udev);
727 }
728
729 usb_free_urb(urb);
730
731 done:
732 return err;
733 }
734
735 static void btusb_destruct(struct hci_dev *hdev)
736 {
737 struct btusb_data *data = hdev->driver_data;
738
739 BT_DBG("%s", hdev->name);
740
741 kfree(data);
742 }
743
744 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
745 {
746 struct btusb_data *data = hdev->driver_data;
747
748 BT_DBG("%s evt %d", hdev->name, evt);
749
750 if (hdev->conn_hash.sco_num != data->sco_num) {
751 data->sco_num = hdev->conn_hash.sco_num;
752 schedule_work(&data->work);
753 }
754 }
755
756 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
757 {
758 struct btusb_data *data = hdev->driver_data;
759 struct usb_interface *intf = data->isoc;
760 struct usb_endpoint_descriptor *ep_desc;
761 int i, err;
762
763 if (!data->isoc)
764 return -ENODEV;
765
766 err = usb_set_interface(data->udev, 1, altsetting);
767 if (err < 0) {
768 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
769 return err;
770 }
771
772 data->isoc_altsetting = altsetting;
773
774 data->isoc_tx_ep = NULL;
775 data->isoc_rx_ep = NULL;
776
777 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
778 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
779
780 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
781 data->isoc_tx_ep = ep_desc;
782 continue;
783 }
784
785 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
786 data->isoc_rx_ep = ep_desc;
787 continue;
788 }
789 }
790
791 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
792 BT_ERR("%s invalid SCO descriptors", hdev->name);
793 return -ENODEV;
794 }
795
796 return 0;
797 }
798
799 static void btusb_work(struct work_struct *work)
800 {
801 struct btusb_data *data = container_of(work, struct btusb_data, work);
802 struct hci_dev *hdev = data->hdev;
803 int err;
804
805 if (hdev->conn_hash.sco_num > 0) {
806 if (!data->did_iso_resume) {
807 err = usb_autopm_get_interface(data->isoc);
808 if (err < 0) {
809 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
810 usb_kill_anchored_urbs(&data->isoc_anchor);
811 return;
812 }
813
814 data->did_iso_resume = 1;
815 }
816 if (data->isoc_altsetting != 2) {
817 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
818 usb_kill_anchored_urbs(&data->isoc_anchor);
819
820 if (__set_isoc_interface(hdev, 2) < 0)
821 return;
822 }
823
824 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
825 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
826 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
827 else
828 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
829 }
830 } else {
831 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
832 usb_kill_anchored_urbs(&data->isoc_anchor);
833
834 __set_isoc_interface(hdev, 0);
835 if (data->did_iso_resume) {
836 data->did_iso_resume = 0;
837 usb_autopm_put_interface(data->isoc);
838 }
839 }
840 }
841
842 static void btusb_waker(struct work_struct *work)
843 {
844 struct btusb_data *data = container_of(work, struct btusb_data, waker);
845 int err;
846
847 err = usb_autopm_get_interface(data->intf);
848 if (err < 0)
849 return;
850
851 usb_autopm_put_interface(data->intf);
852 }
853
854 static int btusb_probe(struct usb_interface *intf,
855 const struct usb_device_id *id)
856 {
857 struct usb_endpoint_descriptor *ep_desc;
858 struct btusb_data *data;
859 struct hci_dev *hdev;
860 int i, err;
861
862 BT_DBG("intf %p id %p", intf, id);
863
864 /* interface numbers are hardcoded in the spec */
865 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
866 return -ENODEV;
867
868 if (!id->driver_info) {
869 const struct usb_device_id *match;
870 match = usb_match_id(intf, blacklist_table);
871 if (match)
872 id = match;
873 }
874
875 if (id->driver_info == BTUSB_IGNORE)
876 return -ENODEV;
877
878 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
879 return -ENODEV;
880
881 if (ignore_csr && id->driver_info & BTUSB_CSR)
882 return -ENODEV;
883
884 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
885 return -ENODEV;
886
887 data = kzalloc(sizeof(*data), GFP_KERNEL);
888 if (!data)
889 return -ENOMEM;
890
891 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
892 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
893
894 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
895 data->intr_ep = ep_desc;
896 continue;
897 }
898
899 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
900 data->bulk_tx_ep = ep_desc;
901 continue;
902 }
903
904 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
905 data->bulk_rx_ep = ep_desc;
906 continue;
907 }
908 }
909
910 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
911 kfree(data);
912 return -ENODEV;
913 }
914
915 data->cmdreq_type = USB_TYPE_CLASS;
916
917 data->udev = interface_to_usbdev(intf);
918 data->intf = intf;
919
920 spin_lock_init(&data->lock);
921
922 INIT_WORK(&data->work, btusb_work);
923 INIT_WORK(&data->waker, btusb_waker);
924 spin_lock_init(&data->txlock);
925
926 init_usb_anchor(&data->tx_anchor);
927 init_usb_anchor(&data->intr_anchor);
928 init_usb_anchor(&data->bulk_anchor);
929 init_usb_anchor(&data->isoc_anchor);
930 init_usb_anchor(&data->deferred);
931
932 hdev = hci_alloc_dev();
933 if (!hdev) {
934 kfree(data);
935 return -ENOMEM;
936 }
937
938 hdev->type = HCI_USB;
939 hdev->driver_data = data;
940
941 data->hdev = hdev;
942
943 SET_HCIDEV_DEV(hdev, &intf->dev);
944
945 hdev->open = btusb_open;
946 hdev->close = btusb_close;
947 hdev->flush = btusb_flush;
948 hdev->send = btusb_send_frame;
949 hdev->destruct = btusb_destruct;
950 hdev->notify = btusb_notify;
951
952 hdev->owner = THIS_MODULE;
953
954 /* Interface numbers are hardcoded in the specification */
955 data->isoc = usb_ifnum_to_if(data->udev, 1);
956
957 if (!reset)
958 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
959
960 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
961 if (!disable_scofix)
962 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
963 }
964
965 if (id->driver_info & BTUSB_BROKEN_ISOC)
966 data->isoc = NULL;
967
968 if (id->driver_info & BTUSB_DIGIANSWER) {
969 data->cmdreq_type = USB_TYPE_VENDOR;
970 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
971 }
972
973 if (id->driver_info & BTUSB_CSR) {
974 struct usb_device *udev = data->udev;
975
976 /* Old firmware would otherwise execute USB reset */
977 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
978 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
979 }
980
981 if (id->driver_info & BTUSB_SNIFFER) {
982 struct usb_device *udev = data->udev;
983
984 /* New sniffer firmware has crippled HCI interface */
985 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
986 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
987
988 data->isoc = NULL;
989 }
990
991 if (id->driver_info & BTUSB_BCM92035) {
992 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
993 struct sk_buff *skb;
994
995 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
996 if (skb) {
997 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
998 skb_queue_tail(&hdev->driver_init, skb);
999 }
1000 }
1001
1002 if (data->isoc) {
1003 err = usb_driver_claim_interface(&btusb_driver,
1004 data->isoc, data);
1005 if (err < 0) {
1006 hci_free_dev(hdev);
1007 kfree(data);
1008 return err;
1009 }
1010 }
1011
1012 err = hci_register_dev(hdev);
1013 if (err < 0) {
1014 hci_free_dev(hdev);
1015 kfree(data);
1016 return err;
1017 }
1018
1019 usb_set_intfdata(intf, data);
1020
1021 return 0;
1022 }
1023
1024 static void btusb_disconnect(struct usb_interface *intf)
1025 {
1026 struct btusb_data *data = usb_get_intfdata(intf);
1027 struct hci_dev *hdev;
1028
1029 BT_DBG("intf %p", intf);
1030
1031 if (!data)
1032 return;
1033
1034 hdev = data->hdev;
1035
1036 __hci_dev_hold(hdev);
1037
1038 usb_set_intfdata(data->intf, NULL);
1039
1040 if (data->isoc)
1041 usb_set_intfdata(data->isoc, NULL);
1042
1043 hci_unregister_dev(hdev);
1044
1045 if (intf == data->isoc)
1046 usb_driver_release_interface(&btusb_driver, data->intf);
1047 else if (data->isoc)
1048 usb_driver_release_interface(&btusb_driver, data->isoc);
1049
1050 __hci_dev_put(hdev);
1051
1052 hci_free_dev(hdev);
1053 }
1054
1055 #ifdef CONFIG_PM
1056 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1057 {
1058 struct btusb_data *data = usb_get_intfdata(intf);
1059
1060 BT_DBG("intf %p", intf);
1061
1062 if (data->suspend_count++)
1063 return 0;
1064
1065 spin_lock_irq(&data->txlock);
1066 if (!(interface_to_usbdev(intf)->auto_pm && data->tx_in_flight)) {
1067 set_bit(BTUSB_SUSPENDING, &data->flags);
1068 spin_unlock_irq(&data->txlock);
1069 } else {
1070 spin_unlock_irq(&data->txlock);
1071 data->suspend_count--;
1072 return -EBUSY;
1073 }
1074
1075 cancel_work_sync(&data->work);
1076
1077 btusb_stop_traffic(data);
1078 usb_kill_anchored_urbs(&data->tx_anchor);
1079
1080 return 0;
1081 }
1082
1083 static void play_deferred(struct btusb_data *data)
1084 {
1085 struct urb *urb;
1086 int err;
1087
1088 while ((urb = usb_get_from_anchor(&data->deferred))) {
1089 err = usb_submit_urb(urb, GFP_ATOMIC);
1090 if (err < 0)
1091 break;
1092
1093 data->tx_in_flight++;
1094 }
1095 usb_scuttle_anchored_urbs(&data->deferred);
1096 }
1097
1098 static int btusb_resume(struct usb_interface *intf)
1099 {
1100 struct btusb_data *data = usb_get_intfdata(intf);
1101 struct hci_dev *hdev = data->hdev;
1102 int err = 0;
1103
1104 BT_DBG("intf %p", intf);
1105
1106 if (--data->suspend_count)
1107 return 0;
1108
1109 if (!test_bit(HCI_RUNNING, &hdev->flags))
1110 goto done;
1111
1112 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1113 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1114 if (err < 0) {
1115 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1116 goto failed;
1117 }
1118 }
1119
1120 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1121 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1122 if (err < 0) {
1123 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1124 goto failed;
1125 }
1126
1127 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1128 }
1129
1130 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1131 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1132 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1133 else
1134 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1135 }
1136
1137 spin_lock_irq(&data->txlock);
1138 play_deferred(data);
1139 clear_bit(BTUSB_SUSPENDING, &data->flags);
1140 spin_unlock_irq(&data->txlock);
1141 schedule_work(&data->work);
1142
1143 return 0;
1144
1145 failed:
1146 usb_scuttle_anchored_urbs(&data->deferred);
1147 done:
1148 spin_lock_irq(&data->txlock);
1149 clear_bit(BTUSB_SUSPENDING, &data->flags);
1150 spin_unlock_irq(&data->txlock);
1151
1152 return err;
1153 }
1154 #endif
1155
1156 static struct usb_driver btusb_driver = {
1157 .name = "btusb",
1158 .probe = btusb_probe,
1159 .disconnect = btusb_disconnect,
1160 #ifdef CONFIG_PM
1161 .suspend = btusb_suspend,
1162 .resume = btusb_resume,
1163 #endif
1164 .id_table = btusb_table,
1165 .supports_autosuspend = 1,
1166 };
1167
1168 static int __init btusb_init(void)
1169 {
1170 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1171
1172 return usb_register(&btusb_driver);
1173 }
1174
1175 static void __exit btusb_exit(void)
1176 {
1177 usb_deregister(&btusb_driver);
1178 }
1179
1180 module_init(btusb_init);
1181 module_exit(btusb_exit);
1182
1183 module_param(ignore_dga, bool, 0644);
1184 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1185
1186 module_param(ignore_csr, bool, 0644);
1187 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1188
1189 module_param(ignore_sniffer, bool, 0644);
1190 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1191
1192 module_param(disable_scofix, bool, 0644);
1193 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1194
1195 module_param(force_scofix, bool, 0644);
1196 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1197
1198 module_param(reset, bool, 0644);
1199 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1200
1201 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1202 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1203 MODULE_VERSION(VERSION);
1204 MODULE_LICENSE("GPL");
Linux for Ginger Game Console