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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
40static int ignore_dga;
41static int ignore_csr;
42static int ignore_sniffer;
43static int disable_scofix;
44static int force_scofix;
45
46static int reset = 1;
47
48static 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
58static struct usb_device_id btusb_table[] = {
59
60 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
61
62
63 { USB_DEVICE(0x05ac, 0x8213) },
64
65
66 { USB_DEVICE(0x05ac, 0x8215) },
67
68
69 { USB_DEVICE(0x05ac, 0x8218) },
70
71
72 { USB_DEVICE(0x05ac, 0x821b) },
73
74
75 { USB_DEVICE(0x057c, 0x3800) },
76
77
78 { USB_DEVICE(0x04bf, 0x030a) },
79
80
81 { USB_DEVICE(0x044e, 0x3001) },
82 { USB_DEVICE(0x044e, 0x3002) },
83
84
85 { USB_DEVICE(0x0bdb, 0x1002) },
86
87
88 { USB_DEVICE(0x0c10, 0x0000) },
89
90 { }
91};
92
93MODULE_DEVICE_TABLE(usb, btusb_table);
94
95static struct usb_device_id blacklist_table[] = {
96
97 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
98
99
100 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
101
102
103 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
104
105
106 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
107
108
109 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
110
111
112 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
113 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
114 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
115
116
117 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
118 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
119
120
121 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
122 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
123
124
125 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
126
127
128 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
129
130
131 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
132 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
133
134
135 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
136 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
137
138
139 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
140
141
142 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
143
144
145 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
146 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
147
148
149 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
150
151
152 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
153 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
154
155
156 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
157
158
159 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
160
161 { }
162};
163
164#define BTUSB_MAX_ISOC_FRAMES 10
165
166#define BTUSB_INTR_RUNNING 0
167#define BTUSB_BULK_RUNNING 1
168#define BTUSB_ISOC_RUNNING 2
169#define BTUSB_SUSPENDING 3
170#define BTUSB_DID_ISO_RESUME 4
171
172struct btusb_data {
173 struct hci_dev *hdev;
174 struct usb_device *udev;
175 struct usb_interface *intf;
176 struct usb_interface *isoc;
177
178 spinlock_t lock;
179
180 unsigned long flags;
181
182 struct work_struct work;
183 struct work_struct waker;
184
185 struct usb_anchor tx_anchor;
186 struct usb_anchor intr_anchor;
187 struct usb_anchor bulk_anchor;
188 struct usb_anchor isoc_anchor;
189 struct usb_anchor deferred;
190 int tx_in_flight;
191 spinlock_t txlock;
192
193 struct usb_endpoint_descriptor *intr_ep;
194 struct usb_endpoint_descriptor *bulk_tx_ep;
195 struct usb_endpoint_descriptor *bulk_rx_ep;
196 struct usb_endpoint_descriptor *isoc_tx_ep;
197 struct usb_endpoint_descriptor *isoc_rx_ep;
198
199 __u8 cmdreq_type;
200
201 unsigned int sco_num;
202 int isoc_altsetting;
203 int suspend_count;
204};
205
206static int inc_tx(struct btusb_data *data)
207{
208 unsigned long flags;
209 int rv;
210
211 spin_lock_irqsave(&data->txlock, flags);
212 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
213 if (!rv)
214 data->tx_in_flight++;
215 spin_unlock_irqrestore(&data->txlock, flags);
216
217 return rv;
218}
219
220static void btusb_intr_complete(struct urb *urb)
221{
222 struct hci_dev *hdev = urb->context;
223 struct btusb_data *data = hdev->driver_data;
224 int err;
225
226 BT_DBG("%s urb %p status %d count %d", hdev->name,
227 urb, urb->status, urb->actual_length);
228
229 if (!test_bit(HCI_RUNNING, &hdev->flags))
230 return;
231
232 if (urb->status == 0) {
233 hdev->stat.byte_rx += urb->actual_length;
234
235 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
236 urb->transfer_buffer,
237 urb->actual_length) < 0) {
238 BT_ERR("%s corrupted event packet", hdev->name);
239 hdev->stat.err_rx++;
240 }
241 }
242
243 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
244 return;
245
246 usb_mark_last_busy(data->udev);
247 usb_anchor_urb(urb, &data->intr_anchor);
248
249 err = usb_submit_urb(urb, GFP_ATOMIC);
250 if (err < 0) {
251 if (err != -EPERM)
252 BT_ERR("%s urb %p failed to resubmit (%d)",
253 hdev->name, urb, -err);
254 usb_unanchor_urb(urb);
255 }
256}
257
258static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
259{
260 struct btusb_data *data = hdev->driver_data;
261 struct urb *urb;
262 unsigned char *buf;
263 unsigned int pipe;
264 int err, size;
265
266 BT_DBG("%s", hdev->name);
267
268 if (!data->intr_ep)
269 return -ENODEV;
270
271 urb = usb_alloc_urb(0, mem_flags);
272 if (!urb)
273 return -ENOMEM;
274
275 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
276
277 buf = kmalloc(size, mem_flags);
278 if (!buf) {
279 usb_free_urb(urb);
280 return -ENOMEM;
281 }
282
283 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
284
285 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
286 btusb_intr_complete, hdev,
287 data->intr_ep->bInterval);
288
289 urb->transfer_flags |= URB_FREE_BUFFER;
290
291 usb_anchor_urb(urb, &data->intr_anchor);
292
293 err = usb_submit_urb(urb, mem_flags);
294 if (err < 0) {
295 BT_ERR("%s urb %p submission failed (%d)",
296 hdev->name, urb, -err);
297 usb_unanchor_urb(urb);
298 }
299
300 usb_free_urb(urb);
301
302 return err;
303}
304
305static void btusb_bulk_complete(struct urb *urb)
306{
307 struct hci_dev *hdev = urb->context;
308 struct btusb_data *data = hdev->driver_data;
309 int err;
310
311 BT_DBG("%s urb %p status %d count %d", hdev->name,
312 urb, urb->status, urb->actual_length);
313
314 if (!test_bit(HCI_RUNNING, &hdev->flags))
315 return;
316
317 if (urb->status == 0) {
318 hdev->stat.byte_rx += urb->actual_length;
319
320 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
321 urb->transfer_buffer,
322 urb->actual_length) < 0) {
323 BT_ERR("%s corrupted ACL packet", hdev->name);
324 hdev->stat.err_rx++;
325 }
326 }
327
328 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
329 return;
330
331 usb_anchor_urb(urb, &data->bulk_anchor);
332 usb_mark_last_busy(data->udev);
333
334 err = usb_submit_urb(urb, GFP_ATOMIC);
335 if (err < 0) {
336 if (err != -EPERM)
337 BT_ERR("%s urb %p failed to resubmit (%d)",
338 hdev->name, urb, -err);
339 usb_unanchor_urb(urb);
340 }
341}
342
343static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
344{
345 struct btusb_data *data = hdev->driver_data;
346 struct urb *urb;
347 unsigned char *buf;
348 unsigned int pipe;
349 int err, size = HCI_MAX_FRAME_SIZE;
350
351 BT_DBG("%s", hdev->name);
352
353 if (!data->bulk_rx_ep)
354 return -ENODEV;
355
356 urb = usb_alloc_urb(0, mem_flags);
357 if (!urb)
358 return -ENOMEM;
359
360 buf = kmalloc(size, mem_flags);
361 if (!buf) {
362 usb_free_urb(urb);
363 return -ENOMEM;
364 }
365
366 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
367
368 usb_fill_bulk_urb(urb, data->udev, pipe,
369 buf, size, btusb_bulk_complete, hdev);
370
371 urb->transfer_flags |= URB_FREE_BUFFER;
372
373 usb_mark_last_busy(data->udev);
374 usb_anchor_urb(urb, &data->bulk_anchor);
375
376 err = usb_submit_urb(urb, mem_flags);
377 if (err < 0) {
378 BT_ERR("%s urb %p submission failed (%d)",
379 hdev->name, urb, -err);
380 usb_unanchor_urb(urb);
381 }
382
383 usb_free_urb(urb);
384
385 return err;
386}
387
388static void btusb_isoc_complete(struct urb *urb)
389{
390 struct hci_dev *hdev = urb->context;
391 struct btusb_data *data = hdev->driver_data;
392 int i, err;
393
394 BT_DBG("%s urb %p status %d count %d", hdev->name,
395 urb, urb->status, urb->actual_length);
396
397 if (!test_bit(HCI_RUNNING, &hdev->flags))
398 return;
399
400 if (urb->status == 0) {
401 for (i = 0; i < urb->number_of_packets; i++) {
402 unsigned int offset = urb->iso_frame_desc[i].offset;
403 unsigned int length = urb->iso_frame_desc[i].actual_length;
404
405 if (urb->iso_frame_desc[i].status)
406 continue;
407
408 hdev->stat.byte_rx += length;
409
410 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
411 urb->transfer_buffer + offset,
412 length) < 0) {
413 BT_ERR("%s corrupted SCO packet", hdev->name);
414 hdev->stat.err_rx++;
415 }
416 }
417 }
418
419 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
420 return;
421
422 usb_anchor_urb(urb, &data->isoc_anchor);
423
424 err = usb_submit_urb(urb, GFP_ATOMIC);
425 if (err < 0) {
426 if (err != -EPERM)
427 BT_ERR("%s urb %p failed to resubmit (%d)",
428 hdev->name, urb, -err);
429 usb_unanchor_urb(urb);
430 }
431}
432
433static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
434{
435 int i, offset = 0;
436
437 BT_DBG("len %d mtu %d", len, mtu);
438
439 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
440 i++, offset += mtu, len -= mtu) {
441 urb->iso_frame_desc[i].offset = offset;
442 urb->iso_frame_desc[i].length = mtu;
443 }
444
445 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
446 urb->iso_frame_desc[i].offset = offset;
447 urb->iso_frame_desc[i].length = len;
448 i++;
449 }
450
451 urb->number_of_packets = i;
452}
453
454static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
455{
456 struct btusb_data *data = hdev->driver_data;
457 struct urb *urb;
458 unsigned char *buf;
459 unsigned int pipe;
460 int err, size;
461
462 BT_DBG("%s", hdev->name);
463
464 if (!data->isoc_rx_ep)
465 return -ENODEV;
466
467 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
468 if (!urb)
469 return -ENOMEM;
470
471 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
472 BTUSB_MAX_ISOC_FRAMES;
473
474 buf = kmalloc(size, mem_flags);
475 if (!buf) {
476 usb_free_urb(urb);
477 return -ENOMEM;
478 }
479
480 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
481
482 urb->dev = data->udev;
483 urb->pipe = pipe;
484 urb->context = hdev;
485 urb->complete = btusb_isoc_complete;
486 urb->interval = data->isoc_rx_ep->bInterval;
487
488 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
489 urb->transfer_buffer = buf;
490 urb->transfer_buffer_length = size;
491
492 __fill_isoc_descriptor(urb, size,
493 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
494
495 usb_anchor_urb(urb, &data->isoc_anchor);
496
497 err = usb_submit_urb(urb, mem_flags);
498 if (err < 0) {
499 BT_ERR("%s urb %p submission failed (%d)",
500 hdev->name, urb, -err);
501 usb_unanchor_urb(urb);
502 }
503
504 usb_free_urb(urb);
505
506 return err;
507}
508
509static void btusb_tx_complete(struct urb *urb)
510{
511 struct sk_buff *skb = urb->context;
512 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
513 struct btusb_data *data = hdev->driver_data;
514
515 BT_DBG("%s urb %p status %d count %d", hdev->name,
516 urb, urb->status, urb->actual_length);
517
518 if (!test_bit(HCI_RUNNING, &hdev->flags))
519 goto done;
520
521 if (!urb->status)
522 hdev->stat.byte_tx += urb->transfer_buffer_length;
523 else
524 hdev->stat.err_tx++;
525
526done:
527 spin_lock(&data->txlock);
528 data->tx_in_flight--;
529 spin_unlock(&data->txlock);
530
531 kfree(urb->setup_packet);
532
533 kfree_skb(skb);
534}
535
536static void btusb_isoc_tx_complete(struct urb *urb)
537{
538 struct sk_buff *skb = urb->context;
539 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
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
552done:
553 kfree(urb->setup_packet);
554
555 kfree_skb(skb);
556}
557
558static int btusb_open(struct hci_dev *hdev)
559{
560 struct btusb_data *data = hdev->driver_data;
561 int err;
562
563 BT_DBG("%s", hdev->name);
564
565 err = usb_autopm_get_interface(data->intf);
566 if (err < 0)
567 return err;
568
569 data->intf->needs_remote_wakeup = 1;
570
571 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
572 goto done;
573
574 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
575 goto done;
576
577 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
578 if (err < 0)
579 goto failed;
580
581 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
582 if (err < 0) {
583 usb_kill_anchored_urbs(&data->intr_anchor);
584 goto failed;
585 }
586
587 set_bit(BTUSB_BULK_RUNNING, &data->flags);
588 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
589
590done:
591 usb_autopm_put_interface(data->intf);
592 return 0;
593
594failed:
595 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
596 clear_bit(HCI_RUNNING, &hdev->flags);
597 usb_autopm_put_interface(data->intf);
598 return err;
599}
600
601static void btusb_stop_traffic(struct btusb_data *data)
602{
603 usb_kill_anchored_urbs(&data->intr_anchor);
604 usb_kill_anchored_urbs(&data->bulk_anchor);
605 usb_kill_anchored_urbs(&data->isoc_anchor);
606}
607
608static int btusb_close(struct hci_dev *hdev)
609{
610 struct btusb_data *data = hdev->driver_data;
611 int err;
612
613 BT_DBG("%s", hdev->name);
614
615 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
616 return 0;
617
618 cancel_work_sync(&data->work);
619 cancel_work_sync(&data->waker);
620
621 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
622 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
623 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
624
625 btusb_stop_traffic(data);
626 err = usb_autopm_get_interface(data->intf);
627 if (err < 0)
628 goto failed;
629
630 data->intf->needs_remote_wakeup = 0;
631 usb_autopm_put_interface(data->intf);
632
633failed:
634 usb_scuttle_anchored_urbs(&data->deferred);
635 return 0;
636}
637
638static int btusb_flush(struct hci_dev *hdev)
639{
640 struct btusb_data *data = hdev->driver_data;
641
642 BT_DBG("%s", hdev->name);
643
644 usb_kill_anchored_urbs(&data->tx_anchor);
645
646 return 0;
647}
648
649static int btusb_send_frame(struct sk_buff *skb)
650{
651 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
652 struct btusb_data *data = hdev->driver_data;
653 struct usb_ctrlrequest *dr;
654 struct urb *urb;
655 unsigned int pipe;
656 int err;
657
658 BT_DBG("%s", hdev->name);
659
660 if (!test_bit(HCI_RUNNING, &hdev->flags))
661 return -EBUSY;
662
663 switch (bt_cb(skb)->pkt_type) {
664 case HCI_COMMAND_PKT:
665 urb = usb_alloc_urb(0, GFP_ATOMIC);
666 if (!urb)
667 return -ENOMEM;
668
669 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
670 if (!dr) {
671 usb_free_urb(urb);
672 return -ENOMEM;
673 }
674
675 dr->bRequestType = data->cmdreq_type;
676 dr->bRequest = 0;
677 dr->wIndex = 0;
678 dr->wValue = 0;
679 dr->wLength = __cpu_to_le16(skb->len);
680
681 pipe = usb_sndctrlpipe(data->udev, 0x00);
682
683 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
684 skb->data, skb->len, btusb_tx_complete, skb);
685
686 hdev->stat.cmd_tx++;
687 break;
688
689 case HCI_ACLDATA_PKT:
690 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
691 return -ENODEV;
692
693 urb = usb_alloc_urb(0, GFP_ATOMIC);
694 if (!urb)
695 return -ENOMEM;
696
697 pipe = usb_sndbulkpipe(data->udev,
698 data->bulk_tx_ep->bEndpointAddress);
699
700 usb_fill_bulk_urb(urb, data->udev, pipe,
701 skb->data, skb->len, btusb_tx_complete, skb);
702
703 hdev->stat.acl_tx++;
704 break;
705
706 case HCI_SCODATA_PKT:
707 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
708 return -ENODEV;
709
710 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
711 if (!urb)
712 return -ENOMEM;
713
714 pipe = usb_sndisocpipe(data->udev,
715 data->isoc_tx_ep->bEndpointAddress);
716
717 urb->dev = data->udev;
718 urb->pipe = pipe;
719 urb->context = skb;
720 urb->complete = btusb_isoc_tx_complete;
721 urb->interval = data->isoc_tx_ep->bInterval;
722
723 urb->transfer_flags = URB_ISO_ASAP;
724 urb->transfer_buffer = skb->data;
725 urb->transfer_buffer_length = skb->len;
726
727 __fill_isoc_descriptor(urb, skb->len,
728 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
729
730 hdev->stat.sco_tx++;
731 goto skip_waking;
732
733 default:
734 return -EILSEQ;
735 }
736
737 err = inc_tx(data);
738 if (err) {
739 usb_anchor_urb(urb, &data->deferred);
740 schedule_work(&data->waker);
741 err = 0;
742 goto done;
743 }
744
745skip_waking:
746 usb_anchor_urb(urb, &data->tx_anchor);
747
748 err = usb_submit_urb(urb, GFP_ATOMIC);
749 if (err < 0) {
750 BT_ERR("%s urb %p submission failed", hdev->name, urb);
751 kfree(urb->setup_packet);
752 usb_unanchor_urb(urb);
753 } else {
754 usb_mark_last_busy(data->udev);
755 }
756
757 usb_free_urb(urb);
758
759done:
760 return err;
761}
762
763static void btusb_destruct(struct hci_dev *hdev)
764{
765 struct btusb_data *data = hdev->driver_data;
766
767 BT_DBG("%s", hdev->name);
768
769 kfree(data);
770}
771
772static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
773{
774 struct btusb_data *data = hdev->driver_data;
775
776 BT_DBG("%s evt %d", hdev->name, evt);
777
778 if (hdev->conn_hash.sco_num != data->sco_num) {
779 data->sco_num = hdev->conn_hash.sco_num;
780 schedule_work(&data->work);
781 }
782}
783
784static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
785{
786 struct btusb_data *data = hdev->driver_data;
787 struct usb_interface *intf = data->isoc;
788 struct usb_endpoint_descriptor *ep_desc;
789 int i, err;
790
791 if (!data->isoc)
792 return -ENODEV;
793
794 err = usb_set_interface(data->udev, 1, altsetting);
795 if (err < 0) {
796 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
797 return err;
798 }
799
800 data->isoc_altsetting = altsetting;
801
802 data->isoc_tx_ep = NULL;
803 data->isoc_rx_ep = NULL;
804
805 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
806 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
807
808 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
809 data->isoc_tx_ep = ep_desc;
810 continue;
811 }
812
813 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
814 data->isoc_rx_ep = ep_desc;
815 continue;
816 }
817 }
818
819 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
820 BT_ERR("%s invalid SCO descriptors", hdev->name);
821 return -ENODEV;
822 }
823
824 return 0;
825}
826
827static void btusb_work(struct work_struct *work)
828{
829 struct btusb_data *data = container_of(work, struct btusb_data, work);
830 struct hci_dev *hdev = data->hdev;
831 int err;
832
833 if (hdev->conn_hash.sco_num > 0) {
834 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
835 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
836 if (err < 0) {
837 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
838 usb_kill_anchored_urbs(&data->isoc_anchor);
839 return;
840 }
841
842 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
843 }
844 if (data->isoc_altsetting != 2) {
845 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
846 usb_kill_anchored_urbs(&data->isoc_anchor);
847
848 if (__set_isoc_interface(hdev, 2) < 0)
849 return;
850 }
851
852 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
853 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
854 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
855 else
856 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
857 }
858 } else {
859 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
860 usb_kill_anchored_urbs(&data->isoc_anchor);
861
862 __set_isoc_interface(hdev, 0);
863 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
864 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
865 }
866}
867
868static void btusb_waker(struct work_struct *work)
869{
870 struct btusb_data *data = container_of(work, struct btusb_data, waker);
871 int err;
872
873 err = usb_autopm_get_interface(data->intf);
874 if (err < 0)
875 return;
876
877 usb_autopm_put_interface(data->intf);
878}
879
880static int btusb_probe(struct usb_interface *intf,
881 const struct usb_device_id *id)
882{
883 struct usb_endpoint_descriptor *ep_desc;
884 struct btusb_data *data;
885 struct hci_dev *hdev;
886 int i, err;
887
888 BT_DBG("intf %p id %p", intf, id);
889
890
891 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
892 return -ENODEV;
893
894 if (!id->driver_info) {
895 const struct usb_device_id *match;
896 match = usb_match_id(intf, blacklist_table);
897 if (match)
898 id = match;
899 }
900
901 if (id->driver_info == BTUSB_IGNORE)
902 return -ENODEV;
903
904 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
905 return -ENODEV;
906
907 if (ignore_csr && id->driver_info & BTUSB_CSR)
908 return -ENODEV;
909
910 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
911 return -ENODEV;
912
913 data = kzalloc(sizeof(*data), GFP_KERNEL);
914 if (!data)
915 return -ENOMEM;
916
917 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
918 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
919
920 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
921 data->intr_ep = ep_desc;
922 continue;
923 }
924
925 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
926 data->bulk_tx_ep = ep_desc;
927 continue;
928 }
929
930 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
931 data->bulk_rx_ep = ep_desc;
932 continue;
933 }
934 }
935
936 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
937 kfree(data);
938 return -ENODEV;
939 }
940
941 data->cmdreq_type = USB_TYPE_CLASS;
942
943 data->udev = interface_to_usbdev(intf);
944 data->intf = intf;
945
946 spin_lock_init(&data->lock);
947
948 INIT_WORK(&data->work, btusb_work);
949 INIT_WORK(&data->waker, btusb_waker);
950 spin_lock_init(&data->txlock);
951
952 init_usb_anchor(&data->tx_anchor);
953 init_usb_anchor(&data->intr_anchor);
954 init_usb_anchor(&data->bulk_anchor);
955 init_usb_anchor(&data->isoc_anchor);
956 init_usb_anchor(&data->deferred);
957
958 hdev = hci_alloc_dev();
959 if (!hdev) {
960 kfree(data);
961 return -ENOMEM;
962 }
963
964 hdev->bus = HCI_USB;
965 hdev->driver_data = data;
966
967 data->hdev = hdev;
968
969 SET_HCIDEV_DEV(hdev, &intf->dev);
970
971 hdev->open = btusb_open;
972 hdev->close = btusb_close;
973 hdev->flush = btusb_flush;
974 hdev->send = btusb_send_frame;
975 hdev->destruct = btusb_destruct;
976 hdev->notify = btusb_notify;
977
978 hdev->owner = THIS_MODULE;
979
980
981 data->isoc = usb_ifnum_to_if(data->udev, 1);
982
983 if (!reset)
984 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
985
986 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
987 if (!disable_scofix)
988 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
989 }
990
991 if (id->driver_info & BTUSB_BROKEN_ISOC)
992 data->isoc = NULL;
993
994 if (id->driver_info & BTUSB_DIGIANSWER) {
995 data->cmdreq_type = USB_TYPE_VENDOR;
996 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
997 }
998
999 if (id->driver_info & BTUSB_CSR) {
1000 struct usb_device *udev = data->udev;
1001
1002
1003 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1004 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1005 }
1006
1007 if (id->driver_info & BTUSB_SNIFFER) {
1008 struct usb_device *udev = data->udev;
1009
1010
1011 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1012 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1013
1014 data->isoc = NULL;
1015 }
1016
1017 if (id->driver_info & BTUSB_BCM92035) {
1018 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1019 struct sk_buff *skb;
1020
1021 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1022 if (skb) {
1023 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1024 skb_queue_tail(&hdev->driver_init, skb);
1025 }
1026 }
1027
1028 if (data->isoc) {
1029 err = usb_driver_claim_interface(&btusb_driver,
1030 data->isoc, data);
1031 if (err < 0) {
1032 hci_free_dev(hdev);
1033 kfree(data);
1034 return err;
1035 }
1036 }
1037
1038 err = hci_register_dev(hdev);
1039 if (err < 0) {
1040 hci_free_dev(hdev);
1041 kfree(data);
1042 return err;
1043 }
1044
1045 usb_set_intfdata(intf, data);
1046
1047 return 0;
1048}
1049
1050static void btusb_disconnect(struct usb_interface *intf)
1051{
1052 struct btusb_data *data = usb_get_intfdata(intf);
1053 struct hci_dev *hdev;
1054
1055 BT_DBG("intf %p", intf);
1056
1057 if (!data)
1058 return;
1059
1060 hdev = data->hdev;
1061
1062 __hci_dev_hold(hdev);
1063
1064 usb_set_intfdata(data->intf, NULL);
1065
1066 if (data->isoc)
1067 usb_set_intfdata(data->isoc, NULL);
1068
1069 hci_unregister_dev(hdev);
1070
1071 if (intf == data->isoc)
1072 usb_driver_release_interface(&btusb_driver, data->intf);
1073 else if (data->isoc)
1074 usb_driver_release_interface(&btusb_driver, data->isoc);
1075
1076 __hci_dev_put(hdev);
1077
1078 hci_free_dev(hdev);
1079}
1080
1081#ifdef CONFIG_PM
1082static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1083{
1084 struct btusb_data *data = usb_get_intfdata(intf);
1085
1086 BT_DBG("intf %p", intf);
1087
1088 if (data->suspend_count++)
1089 return 0;
1090
1091 spin_lock_irq(&data->txlock);
1092 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1093 set_bit(BTUSB_SUSPENDING, &data->flags);
1094 spin_unlock_irq(&data->txlock);
1095 } else {
1096 spin_unlock_irq(&data->txlock);
1097 data->suspend_count--;
1098 return -EBUSY;
1099 }
1100
1101 cancel_work_sync(&data->work);
1102
1103 btusb_stop_traffic(data);
1104 usb_kill_anchored_urbs(&data->tx_anchor);
1105
1106 return 0;
1107}
1108
1109static void play_deferred(struct btusb_data *data)
1110{
1111 struct urb *urb;
1112 int err;
1113
1114 while ((urb = usb_get_from_anchor(&data->deferred))) {
1115 err = usb_submit_urb(urb, GFP_ATOMIC);
1116 if (err < 0)
1117 break;
1118
1119 data->tx_in_flight++;
1120 }
1121 usb_scuttle_anchored_urbs(&data->deferred);
1122}
1123
1124static int btusb_resume(struct usb_interface *intf)
1125{
1126 struct btusb_data *data = usb_get_intfdata(intf);
1127 struct hci_dev *hdev = data->hdev;
1128 int err = 0;
1129
1130 BT_DBG("intf %p", intf);
1131
1132 if (--data->suspend_count)
1133 return 0;
1134
1135 if (!test_bit(HCI_RUNNING, &hdev->flags))
1136 goto done;
1137
1138 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1139 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1140 if (err < 0) {
1141 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1142 goto failed;
1143 }
1144 }
1145
1146 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1147 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1148 if (err < 0) {
1149 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1150 goto failed;
1151 }
1152
1153 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1154 }
1155
1156 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1157 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1158 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1159 else
1160 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1161 }
1162
1163 spin_lock_irq(&data->txlock);
1164 play_deferred(data);
1165 clear_bit(BTUSB_SUSPENDING, &data->flags);
1166 spin_unlock_irq(&data->txlock);
1167 schedule_work(&data->work);
1168
1169 return 0;
1170
1171failed:
1172 usb_scuttle_anchored_urbs(&data->deferred);
1173done:
1174 spin_lock_irq(&data->txlock);
1175 clear_bit(BTUSB_SUSPENDING, &data->flags);
1176 spin_unlock_irq(&data->txlock);
1177
1178 return err;
1179}
1180#endif
1181
1182static struct usb_driver btusb_driver = {
1183 .name = "btusb",
1184 .probe = btusb_probe,
1185 .disconnect = btusb_disconnect,
1186#ifdef CONFIG_PM
1187 .suspend = btusb_suspend,
1188 .resume = btusb_resume,
1189#endif
1190 .id_table = btusb_table,
1191 .supports_autosuspend = 1,
1192};
1193
1194static int __init btusb_init(void)
1195{
1196 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1197
1198 return usb_register(&btusb_driver);
1199}
1200
1201static void __exit btusb_exit(void)
1202{
1203 usb_deregister(&btusb_driver);
1204}
1205
1206module_init(btusb_init);
1207module_exit(btusb_exit);
1208
1209module_param(ignore_dga, bool, 0644);
1210MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1211
1212module_param(ignore_csr, bool, 0644);
1213MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1214
1215module_param(ignore_sniffer, bool, 0644);
1216MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1217
1218module_param(disable_scofix, bool, 0644);
1219MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1220
1221module_param(force_scofix, bool, 0644);
1222MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1223
1224module_param(reset, bool, 0644);
1225MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1226
1227MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1228MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1229MODULE_VERSION(VERSION);
1230MODULE_LICENSE("GPL");
1231
