3 * Generic Bluetooth USB driver
5 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
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.
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.
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
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>
33 #include <linux/usb.h>
35 #include <net/bluetooth/bluetooth.h>
36 #include <net/bluetooth/hci_core.h>
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
;
48 static struct usb_driver btusb_driver
;
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
58 static struct usb_device_id btusb_table
[] = {
59 /* Generic Bluetooth USB device */
60 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
62 /* Apple MacBookPro 7,1 */
63 { USB_DEVICE(0x05ac, 0x8213) },
66 { USB_DEVICE(0x05ac, 0x8215) },
68 /* Apple MacBookPro6,2 */
69 { USB_DEVICE(0x05ac, 0x8218) },
71 /* AVM BlueFRITZ! USB v2.0 */
72 { USB_DEVICE(0x057c, 0x3800) },
74 /* Bluetooth Ultraport Module from IBM */
75 { USB_DEVICE(0x04bf, 0x030a) },
77 /* ALPS Modules with non-standard id */
78 { USB_DEVICE(0x044e, 0x3001) },
79 { USB_DEVICE(0x044e, 0x3002) },
81 /* Ericsson with non-standard id */
82 { USB_DEVICE(0x0bdb, 0x1002) },
84 /* Canyon CN-BTU1 with HID interfaces */
85 { USB_DEVICE(0x0c10, 0x0000) },
87 { } /* Terminating entry */
90 MODULE_DEVICE_TABLE(usb
, btusb_table
);
92 static struct usb_device_id blacklist_table
[] = {
93 /* CSR BlueCore devices */
94 { USB_DEVICE(0x0a12, 0x0001), .driver_info
= BTUSB_CSR
},
96 /* Broadcom BCM2033 without firmware */
97 { USB_DEVICE(0x0a5c, 0x2033), .driver_info
= BTUSB_IGNORE
},
99 /* Broadcom BCM2035 */
100 { USB_DEVICE(0x0a5c, 0x2035), .driver_info
= BTUSB_WRONG_SCO_MTU
},
101 { USB_DEVICE(0x0a5c, 0x200a), .driver_info
= BTUSB_WRONG_SCO_MTU
},
102 { USB_DEVICE(0x0a5c, 0x2009), .driver_info
= BTUSB_BCM92035
},
104 /* Broadcom BCM2045 */
105 { USB_DEVICE(0x0a5c, 0x2039), .driver_info
= BTUSB_WRONG_SCO_MTU
},
106 { USB_DEVICE(0x0a5c, 0x2101), .driver_info
= BTUSB_WRONG_SCO_MTU
},
108 /* IBM/Lenovo ThinkPad with Broadcom chip */
109 { USB_DEVICE(0x0a5c, 0x201e), .driver_info
= BTUSB_WRONG_SCO_MTU
},
110 { USB_DEVICE(0x0a5c, 0x2110), .driver_info
= BTUSB_WRONG_SCO_MTU
},
112 /* HP laptop with Broadcom chip */
113 { USB_DEVICE(0x03f0, 0x171d), .driver_info
= BTUSB_WRONG_SCO_MTU
},
115 /* Dell laptop with Broadcom chip */
116 { USB_DEVICE(0x413c, 0x8126), .driver_info
= BTUSB_WRONG_SCO_MTU
},
118 /* Dell Wireless 370 and 410 devices */
119 { USB_DEVICE(0x413c, 0x8152), .driver_info
= BTUSB_WRONG_SCO_MTU
},
120 { USB_DEVICE(0x413c, 0x8156), .driver_info
= BTUSB_WRONG_SCO_MTU
},
122 /* Belkin F8T012 and F8T013 devices */
123 { USB_DEVICE(0x050d, 0x0012), .driver_info
= BTUSB_WRONG_SCO_MTU
},
124 { USB_DEVICE(0x050d, 0x0013), .driver_info
= BTUSB_WRONG_SCO_MTU
},
126 /* Asus WL-BTD202 device */
127 { USB_DEVICE(0x0b05, 0x1715), .driver_info
= BTUSB_WRONG_SCO_MTU
},
129 /* Kensington Bluetooth USB adapter */
130 { USB_DEVICE(0x047d, 0x105e), .driver_info
= BTUSB_WRONG_SCO_MTU
},
132 /* RTX Telecom based adapters with buggy SCO support */
133 { USB_DEVICE(0x0400, 0x0807), .driver_info
= BTUSB_BROKEN_ISOC
},
134 { USB_DEVICE(0x0400, 0x080a), .driver_info
= BTUSB_BROKEN_ISOC
},
136 /* CONWISE Technology based adapters with buggy SCO support */
137 { USB_DEVICE(0x0e5e, 0x6622), .driver_info
= BTUSB_BROKEN_ISOC
},
139 /* Digianswer devices */
140 { USB_DEVICE(0x08fd, 0x0001), .driver_info
= BTUSB_DIGIANSWER
},
141 { USB_DEVICE(0x08fd, 0x0002), .driver_info
= BTUSB_IGNORE
},
143 /* CSR BlueCore Bluetooth Sniffer */
144 { USB_DEVICE(0x0a12, 0x0002), .driver_info
= BTUSB_SNIFFER
},
146 /* Frontline ComProbe Bluetooth Sniffer */
147 { USB_DEVICE(0x16d3, 0x0002), .driver_info
= BTUSB_SNIFFER
},
149 { } /* Terminating entry */
152 #define BTUSB_MAX_ISOC_FRAMES 10
154 #define BTUSB_INTR_RUNNING 0
155 #define BTUSB_BULK_RUNNING 1
156 #define BTUSB_ISOC_RUNNING 2
157 #define BTUSB_SUSPENDING 3
158 #define BTUSB_DID_ISO_RESUME 4
161 struct hci_dev
*hdev
;
162 struct usb_device
*udev
;
163 struct usb_interface
*intf
;
164 struct usb_interface
*isoc
;
170 struct work_struct work
;
171 struct work_struct waker
;
173 struct usb_anchor tx_anchor
;
174 struct usb_anchor intr_anchor
;
175 struct usb_anchor bulk_anchor
;
176 struct usb_anchor isoc_anchor
;
177 struct usb_anchor deferred
;
181 struct usb_endpoint_descriptor
*intr_ep
;
182 struct usb_endpoint_descriptor
*bulk_tx_ep
;
183 struct usb_endpoint_descriptor
*bulk_rx_ep
;
184 struct usb_endpoint_descriptor
*isoc_tx_ep
;
185 struct usb_endpoint_descriptor
*isoc_rx_ep
;
189 unsigned int sco_num
;
194 static int inc_tx(struct btusb_data
*data
)
199 spin_lock_irqsave(&data
->txlock
, flags
);
200 rv
= test_bit(BTUSB_SUSPENDING
, &data
->flags
);
202 data
->tx_in_flight
++;
203 spin_unlock_irqrestore(&data
->txlock
, flags
);
208 static void btusb_intr_complete(struct urb
*urb
)
210 struct hci_dev
*hdev
= urb
->context
;
211 struct btusb_data
*data
= hdev
->driver_data
;
214 BT_DBG("%s urb %p status %d count %d", hdev
->name
,
215 urb
, urb
->status
, urb
->actual_length
);
217 if (!test_bit(HCI_RUNNING
, &hdev
->flags
))
220 if (urb
->status
== 0) {
221 hdev
->stat
.byte_rx
+= urb
->actual_length
;
223 if (hci_recv_fragment(hdev
, HCI_EVENT_PKT
,
224 urb
->transfer_buffer
,
225 urb
->actual_length
) < 0) {
226 BT_ERR("%s corrupted event packet", hdev
->name
);
231 if (!test_bit(BTUSB_INTR_RUNNING
, &data
->flags
))
234 usb_mark_last_busy(data
->udev
);
235 usb_anchor_urb(urb
, &data
->intr_anchor
);
237 err
= usb_submit_urb(urb
, GFP_ATOMIC
);
239 BT_ERR("%s urb %p failed to resubmit (%d)",
240 hdev
->name
, urb
, -err
);
241 usb_unanchor_urb(urb
);
245 static int btusb_submit_intr_urb(struct hci_dev
*hdev
, gfp_t mem_flags
)
247 struct btusb_data
*data
= hdev
->driver_data
;
253 BT_DBG("%s", hdev
->name
);
258 urb
= usb_alloc_urb(0, mem_flags
);
262 size
= le16_to_cpu(data
->intr_ep
->wMaxPacketSize
);
264 buf
= kmalloc(size
, mem_flags
);
270 pipe
= usb_rcvintpipe(data
->udev
, data
->intr_ep
->bEndpointAddress
);
272 usb_fill_int_urb(urb
, data
->udev
, pipe
, buf
, size
,
273 btusb_intr_complete
, hdev
,
274 data
->intr_ep
->bInterval
);
276 urb
->transfer_flags
|= URB_FREE_BUFFER
;
278 usb_anchor_urb(urb
, &data
->intr_anchor
);
280 err
= usb_submit_urb(urb
, mem_flags
);
282 BT_ERR("%s urb %p submission failed (%d)",
283 hdev
->name
, urb
, -err
);
284 usb_unanchor_urb(urb
);
292 static void btusb_bulk_complete(struct urb
*urb
)
294 struct hci_dev
*hdev
= urb
->context
;
295 struct btusb_data
*data
= hdev
->driver_data
;
298 BT_DBG("%s urb %p status %d count %d", hdev
->name
,
299 urb
, urb
->status
, urb
->actual_length
);
301 if (!test_bit(HCI_RUNNING
, &hdev
->flags
))
304 if (urb
->status
== 0) {
305 hdev
->stat
.byte_rx
+= urb
->actual_length
;
307 if (hci_recv_fragment(hdev
, HCI_ACLDATA_PKT
,
308 urb
->transfer_buffer
,
309 urb
->actual_length
) < 0) {
310 BT_ERR("%s corrupted ACL packet", hdev
->name
);
315 if (!test_bit(BTUSB_BULK_RUNNING
, &data
->flags
))
318 usb_anchor_urb(urb
, &data
->bulk_anchor
);
319 usb_mark_last_busy(data
->udev
);
321 err
= usb_submit_urb(urb
, GFP_ATOMIC
);
323 BT_ERR("%s urb %p failed to resubmit (%d)",
324 hdev
->name
, urb
, -err
);
325 usb_unanchor_urb(urb
);
329 static int btusb_submit_bulk_urb(struct hci_dev
*hdev
, gfp_t mem_flags
)
331 struct btusb_data
*data
= hdev
->driver_data
;
335 int err
, size
= HCI_MAX_FRAME_SIZE
;
337 BT_DBG("%s", hdev
->name
);
339 if (!data
->bulk_rx_ep
)
342 urb
= usb_alloc_urb(0, mem_flags
);
346 buf
= kmalloc(size
, mem_flags
);
352 pipe
= usb_rcvbulkpipe(data
->udev
, data
->bulk_rx_ep
->bEndpointAddress
);
354 usb_fill_bulk_urb(urb
, data
->udev
, pipe
,
355 buf
, size
, btusb_bulk_complete
, hdev
);
357 urb
->transfer_flags
|= URB_FREE_BUFFER
;
359 usb_mark_last_busy(data
->udev
);
360 usb_anchor_urb(urb
, &data
->bulk_anchor
);
362 err
= usb_submit_urb(urb
, mem_flags
);
364 BT_ERR("%s urb %p submission failed (%d)",
365 hdev
->name
, urb
, -err
);
366 usb_unanchor_urb(urb
);
374 static void btusb_isoc_complete(struct urb
*urb
)
376 struct hci_dev
*hdev
= urb
->context
;
377 struct btusb_data
*data
= hdev
->driver_data
;
380 BT_DBG("%s urb %p status %d count %d", hdev
->name
,
381 urb
, urb
->status
, urb
->actual_length
);
383 if (!test_bit(HCI_RUNNING
, &hdev
->flags
))
386 if (urb
->status
== 0) {
387 for (i
= 0; i
< urb
->number_of_packets
; i
++) {
388 unsigned int offset
= urb
->iso_frame_desc
[i
].offset
;
389 unsigned int length
= urb
->iso_frame_desc
[i
].actual_length
;
391 if (urb
->iso_frame_desc
[i
].status
)
394 hdev
->stat
.byte_rx
+= length
;
396 if (hci_recv_fragment(hdev
, HCI_SCODATA_PKT
,
397 urb
->transfer_buffer
+ offset
,
399 BT_ERR("%s corrupted SCO packet", hdev
->name
);
405 if (!test_bit(BTUSB_ISOC_RUNNING
, &data
->flags
))
408 usb_anchor_urb(urb
, &data
->isoc_anchor
);
410 err
= usb_submit_urb(urb
, GFP_ATOMIC
);
412 BT_ERR("%s urb %p failed to resubmit (%d)",
413 hdev
->name
, urb
, -err
);
414 usb_unanchor_urb(urb
);
418 static void inline __fill_isoc_descriptor(struct urb
*urb
, int len
, int mtu
)
422 BT_DBG("len %d mtu %d", len
, mtu
);
424 for (i
= 0; i
< BTUSB_MAX_ISOC_FRAMES
&& len
>= mtu
;
425 i
++, offset
+= mtu
, len
-= mtu
) {
426 urb
->iso_frame_desc
[i
].offset
= offset
;
427 urb
->iso_frame_desc
[i
].length
= mtu
;
430 if (len
&& i
< BTUSB_MAX_ISOC_FRAMES
) {
431 urb
->iso_frame_desc
[i
].offset
= offset
;
432 urb
->iso_frame_desc
[i
].length
= len
;
436 urb
->number_of_packets
= i
;
439 static int btusb_submit_isoc_urb(struct hci_dev
*hdev
, gfp_t mem_flags
)
441 struct btusb_data
*data
= hdev
->driver_data
;
447 BT_DBG("%s", hdev
->name
);
449 if (!data
->isoc_rx_ep
)
452 urb
= usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES
, mem_flags
);
456 size
= le16_to_cpu(data
->isoc_rx_ep
->wMaxPacketSize
) *
457 BTUSB_MAX_ISOC_FRAMES
;
459 buf
= kmalloc(size
, mem_flags
);
465 pipe
= usb_rcvisocpipe(data
->udev
, data
->isoc_rx_ep
->bEndpointAddress
);
467 urb
->dev
= data
->udev
;
470 urb
->complete
= btusb_isoc_complete
;
471 urb
->interval
= data
->isoc_rx_ep
->bInterval
;
473 urb
->transfer_flags
= URB_FREE_BUFFER
| URB_ISO_ASAP
;
474 urb
->transfer_buffer
= buf
;
475 urb
->transfer_buffer_length
= size
;
477 __fill_isoc_descriptor(urb
, size
,
478 le16_to_cpu(data
->isoc_rx_ep
->wMaxPacketSize
));
480 usb_anchor_urb(urb
, &data
->isoc_anchor
);
482 err
= usb_submit_urb(urb
, mem_flags
);
484 BT_ERR("%s urb %p submission failed (%d)",
485 hdev
->name
, urb
, -err
);
486 usb_unanchor_urb(urb
);
494 static void btusb_tx_complete(struct urb
*urb
)
496 struct sk_buff
*skb
= urb
->context
;
497 struct hci_dev
*hdev
= (struct hci_dev
*) skb
->dev
;
498 struct btusb_data
*data
= hdev
->driver_data
;
500 BT_DBG("%s urb %p status %d count %d", hdev
->name
,
501 urb
, urb
->status
, urb
->actual_length
);
503 if (!test_bit(HCI_RUNNING
, &hdev
->flags
))
507 hdev
->stat
.byte_tx
+= urb
->transfer_buffer_length
;
512 spin_lock(&data
->txlock
);
513 data
->tx_in_flight
--;
514 spin_unlock(&data
->txlock
);
516 kfree(urb
->setup_packet
);
521 static void btusb_isoc_tx_complete(struct urb
*urb
)
523 struct sk_buff
*skb
= urb
->context
;
524 struct hci_dev
*hdev
= (struct hci_dev
*) skb
->dev
;
526 BT_DBG("%s urb %p status %d count %d", hdev
->name
,
527 urb
, urb
->status
, urb
->actual_length
);
529 if (!test_bit(HCI_RUNNING
, &hdev
->flags
))
533 hdev
->stat
.byte_tx
+= urb
->transfer_buffer_length
;
538 kfree(urb
->setup_packet
);
543 static int btusb_open(struct hci_dev
*hdev
)
545 struct btusb_data
*data
= hdev
->driver_data
;
548 BT_DBG("%s", hdev
->name
);
550 err
= usb_autopm_get_interface(data
->intf
);
554 data
->intf
->needs_remote_wakeup
= 1;
556 if (test_and_set_bit(HCI_RUNNING
, &hdev
->flags
))
559 if (test_and_set_bit(BTUSB_INTR_RUNNING
, &data
->flags
))
562 err
= btusb_submit_intr_urb(hdev
, GFP_KERNEL
);
566 err
= btusb_submit_bulk_urb(hdev
, GFP_KERNEL
);
568 usb_kill_anchored_urbs(&data
->intr_anchor
);
572 set_bit(BTUSB_BULK_RUNNING
, &data
->flags
);
573 btusb_submit_bulk_urb(hdev
, GFP_KERNEL
);
576 usb_autopm_put_interface(data
->intf
);
580 clear_bit(BTUSB_INTR_RUNNING
, &data
->flags
);
581 clear_bit(HCI_RUNNING
, &hdev
->flags
);
582 usb_autopm_put_interface(data
->intf
);
586 static void btusb_stop_traffic(struct btusb_data
*data
)
588 usb_kill_anchored_urbs(&data
->intr_anchor
);
589 usb_kill_anchored_urbs(&data
->bulk_anchor
);
590 usb_kill_anchored_urbs(&data
->isoc_anchor
);
593 static int btusb_close(struct hci_dev
*hdev
)
595 struct btusb_data
*data
= hdev
->driver_data
;
598 BT_DBG("%s", hdev
->name
);
600 if (!test_and_clear_bit(HCI_RUNNING
, &hdev
->flags
))
603 cancel_work_sync(&data
->work
);
604 cancel_work_sync(&data
->waker
);
606 clear_bit(BTUSB_ISOC_RUNNING
, &data
->flags
);
607 clear_bit(BTUSB_BULK_RUNNING
, &data
->flags
);
608 clear_bit(BTUSB_INTR_RUNNING
, &data
->flags
);
610 btusb_stop_traffic(data
);
611 err
= usb_autopm_get_interface(data
->intf
);
615 data
->intf
->needs_remote_wakeup
= 0;
616 usb_autopm_put_interface(data
->intf
);
619 usb_scuttle_anchored_urbs(&data
->deferred
);
623 static int btusb_flush(struct hci_dev
*hdev
)
625 struct btusb_data
*data
= hdev
->driver_data
;
627 BT_DBG("%s", hdev
->name
);
629 usb_kill_anchored_urbs(&data
->tx_anchor
);
634 static int btusb_send_frame(struct sk_buff
*skb
)
636 struct hci_dev
*hdev
= (struct hci_dev
*) skb
->dev
;
637 struct btusb_data
*data
= hdev
->driver_data
;
638 struct usb_ctrlrequest
*dr
;
643 BT_DBG("%s", hdev
->name
);
645 if (!test_bit(HCI_RUNNING
, &hdev
->flags
))
648 switch (bt_cb(skb
)->pkt_type
) {
649 case HCI_COMMAND_PKT
:
650 urb
= usb_alloc_urb(0, GFP_ATOMIC
);
654 dr
= kmalloc(sizeof(*dr
), GFP_ATOMIC
);
660 dr
->bRequestType
= data
->cmdreq_type
;
664 dr
->wLength
= __cpu_to_le16(skb
->len
);
666 pipe
= usb_sndctrlpipe(data
->udev
, 0x00);
668 usb_fill_control_urb(urb
, data
->udev
, pipe
, (void *) dr
,
669 skb
->data
, skb
->len
, btusb_tx_complete
, skb
);
674 case HCI_ACLDATA_PKT
:
675 if (!data
->bulk_tx_ep
|| hdev
->conn_hash
.acl_num
< 1)
678 urb
= usb_alloc_urb(0, GFP_ATOMIC
);
682 pipe
= usb_sndbulkpipe(data
->udev
,
683 data
->bulk_tx_ep
->bEndpointAddress
);
685 usb_fill_bulk_urb(urb
, data
->udev
, pipe
,
686 skb
->data
, skb
->len
, btusb_tx_complete
, skb
);
691 case HCI_SCODATA_PKT
:
692 if (!data
->isoc_tx_ep
|| hdev
->conn_hash
.sco_num
< 1)
695 urb
= usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES
, GFP_ATOMIC
);
699 pipe
= usb_sndisocpipe(data
->udev
,
700 data
->isoc_tx_ep
->bEndpointAddress
);
702 urb
->dev
= data
->udev
;
705 urb
->complete
= btusb_isoc_tx_complete
;
706 urb
->interval
= data
->isoc_tx_ep
->bInterval
;
708 urb
->transfer_flags
= URB_ISO_ASAP
;
709 urb
->transfer_buffer
= skb
->data
;
710 urb
->transfer_buffer_length
= skb
->len
;
712 __fill_isoc_descriptor(urb
, skb
->len
,
713 le16_to_cpu(data
->isoc_tx_ep
->wMaxPacketSize
));
724 usb_anchor_urb(urb
, &data
->deferred
);
725 schedule_work(&data
->waker
);
731 usb_anchor_urb(urb
, &data
->tx_anchor
);
733 err
= usb_submit_urb(urb
, GFP_ATOMIC
);
735 BT_ERR("%s urb %p submission failed", hdev
->name
, urb
);
736 kfree(urb
->setup_packet
);
737 usb_unanchor_urb(urb
);
739 usb_mark_last_busy(data
->udev
);
748 static void btusb_destruct(struct hci_dev
*hdev
)
750 struct btusb_data
*data
= hdev
->driver_data
;
752 BT_DBG("%s", hdev
->name
);
757 static void btusb_notify(struct hci_dev
*hdev
, unsigned int evt
)
759 struct btusb_data
*data
= hdev
->driver_data
;
761 BT_DBG("%s evt %d", hdev
->name
, evt
);
763 if (hdev
->conn_hash
.sco_num
!= data
->sco_num
) {
764 data
->sco_num
= hdev
->conn_hash
.sco_num
;
765 schedule_work(&data
->work
);
769 static int inline __set_isoc_interface(struct hci_dev
*hdev
, int altsetting
)
771 struct btusb_data
*data
= hdev
->driver_data
;
772 struct usb_interface
*intf
= data
->isoc
;
773 struct usb_endpoint_descriptor
*ep_desc
;
779 err
= usb_set_interface(data
->udev
, 1, altsetting
);
781 BT_ERR("%s setting interface failed (%d)", hdev
->name
, -err
);
785 data
->isoc_altsetting
= altsetting
;
787 data
->isoc_tx_ep
= NULL
;
788 data
->isoc_rx_ep
= NULL
;
790 for (i
= 0; i
< intf
->cur_altsetting
->desc
.bNumEndpoints
; i
++) {
791 ep_desc
= &intf
->cur_altsetting
->endpoint
[i
].desc
;
793 if (!data
->isoc_tx_ep
&& usb_endpoint_is_isoc_out(ep_desc
)) {
794 data
->isoc_tx_ep
= ep_desc
;
798 if (!data
->isoc_rx_ep
&& usb_endpoint_is_isoc_in(ep_desc
)) {
799 data
->isoc_rx_ep
= ep_desc
;
804 if (!data
->isoc_tx_ep
|| !data
->isoc_rx_ep
) {
805 BT_ERR("%s invalid SCO descriptors", hdev
->name
);
812 static void btusb_work(struct work_struct
*work
)
814 struct btusb_data
*data
= container_of(work
, struct btusb_data
, work
);
815 struct hci_dev
*hdev
= data
->hdev
;
818 if (hdev
->conn_hash
.sco_num
> 0) {
819 if (!test_bit(BTUSB_DID_ISO_RESUME
, &data
->flags
)) {
820 err
= usb_autopm_get_interface(data
->isoc
);
822 clear_bit(BTUSB_ISOC_RUNNING
, &data
->flags
);
823 usb_kill_anchored_urbs(&data
->isoc_anchor
);
827 set_bit(BTUSB_DID_ISO_RESUME
, &data
->flags
);
829 if (data
->isoc_altsetting
!= 2) {
830 clear_bit(BTUSB_ISOC_RUNNING
, &data
->flags
);
831 usb_kill_anchored_urbs(&data
->isoc_anchor
);
833 if (__set_isoc_interface(hdev
, 2) < 0)
837 if (!test_and_set_bit(BTUSB_ISOC_RUNNING
, &data
->flags
)) {
838 if (btusb_submit_isoc_urb(hdev
, GFP_KERNEL
) < 0)
839 clear_bit(BTUSB_ISOC_RUNNING
, &data
->flags
);
841 btusb_submit_isoc_urb(hdev
, GFP_KERNEL
);
844 clear_bit(BTUSB_ISOC_RUNNING
, &data
->flags
);
845 usb_kill_anchored_urbs(&data
->isoc_anchor
);
847 __set_isoc_interface(hdev
, 0);
848 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME
, &data
->flags
))
849 usb_autopm_put_interface(data
->isoc
);
853 static void btusb_waker(struct work_struct
*work
)
855 struct btusb_data
*data
= container_of(work
, struct btusb_data
, waker
);
858 err
= usb_autopm_get_interface(data
->intf
);
862 usb_autopm_put_interface(data
->intf
);
865 static int btusb_probe(struct usb_interface
*intf
,
866 const struct usb_device_id
*id
)
868 struct usb_endpoint_descriptor
*ep_desc
;
869 struct btusb_data
*data
;
870 struct hci_dev
*hdev
;
873 BT_DBG("intf %p id %p", intf
, id
);
875 /* interface numbers are hardcoded in the spec */
876 if (intf
->cur_altsetting
->desc
.bInterfaceNumber
!= 0)
879 if (!id
->driver_info
) {
880 const struct usb_device_id
*match
;
881 match
= usb_match_id(intf
, blacklist_table
);
886 if (id
->driver_info
== BTUSB_IGNORE
)
889 if (ignore_dga
&& id
->driver_info
& BTUSB_DIGIANSWER
)
892 if (ignore_csr
&& id
->driver_info
& BTUSB_CSR
)
895 if (ignore_sniffer
&& id
->driver_info
& BTUSB_SNIFFER
)
898 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
902 for (i
= 0; i
< intf
->cur_altsetting
->desc
.bNumEndpoints
; i
++) {
903 ep_desc
= &intf
->cur_altsetting
->endpoint
[i
].desc
;
905 if (!data
->intr_ep
&& usb_endpoint_is_int_in(ep_desc
)) {
906 data
->intr_ep
= ep_desc
;
910 if (!data
->bulk_tx_ep
&& usb_endpoint_is_bulk_out(ep_desc
)) {
911 data
->bulk_tx_ep
= ep_desc
;
915 if (!data
->bulk_rx_ep
&& usb_endpoint_is_bulk_in(ep_desc
)) {
916 data
->bulk_rx_ep
= ep_desc
;
921 if (!data
->intr_ep
|| !data
->bulk_tx_ep
|| !data
->bulk_rx_ep
) {
926 data
->cmdreq_type
= USB_TYPE_CLASS
;
928 data
->udev
= interface_to_usbdev(intf
);
931 spin_lock_init(&data
->lock
);
933 INIT_WORK(&data
->work
, btusb_work
);
934 INIT_WORK(&data
->waker
, btusb_waker
);
935 spin_lock_init(&data
->txlock
);
937 init_usb_anchor(&data
->tx_anchor
);
938 init_usb_anchor(&data
->intr_anchor
);
939 init_usb_anchor(&data
->bulk_anchor
);
940 init_usb_anchor(&data
->isoc_anchor
);
941 init_usb_anchor(&data
->deferred
);
943 hdev
= hci_alloc_dev();
950 hdev
->driver_data
= data
;
954 SET_HCIDEV_DEV(hdev
, &intf
->dev
);
956 hdev
->open
= btusb_open
;
957 hdev
->close
= btusb_close
;
958 hdev
->flush
= btusb_flush
;
959 hdev
->send
= btusb_send_frame
;
960 hdev
->destruct
= btusb_destruct
;
961 hdev
->notify
= btusb_notify
;
963 hdev
->owner
= THIS_MODULE
;
965 /* Interface numbers are hardcoded in the specification */
966 data
->isoc
= usb_ifnum_to_if(data
->udev
, 1);
969 set_bit(HCI_QUIRK_NO_RESET
, &hdev
->quirks
);
971 if (force_scofix
|| id
->driver_info
& BTUSB_WRONG_SCO_MTU
) {
973 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE
, &hdev
->quirks
);
976 if (id
->driver_info
& BTUSB_BROKEN_ISOC
)
979 if (id
->driver_info
& BTUSB_DIGIANSWER
) {
980 data
->cmdreq_type
= USB_TYPE_VENDOR
;
981 set_bit(HCI_QUIRK_NO_RESET
, &hdev
->quirks
);
984 if (id
->driver_info
& BTUSB_CSR
) {
985 struct usb_device
*udev
= data
->udev
;
987 /* Old firmware would otherwise execute USB reset */
988 if (le16_to_cpu(udev
->descriptor
.bcdDevice
) < 0x117)
989 set_bit(HCI_QUIRK_NO_RESET
, &hdev
->quirks
);
992 if (id
->driver_info
& BTUSB_SNIFFER
) {
993 struct usb_device
*udev
= data
->udev
;
995 /* New sniffer firmware has crippled HCI interface */
996 if (le16_to_cpu(udev
->descriptor
.bcdDevice
) > 0x997)
997 set_bit(HCI_QUIRK_RAW_DEVICE
, &hdev
->quirks
);
1002 if (id
->driver_info
& BTUSB_BCM92035
) {
1003 unsigned char cmd
[] = { 0x3b, 0xfc, 0x01, 0x00 };
1004 struct sk_buff
*skb
;
1006 skb
= bt_skb_alloc(sizeof(cmd
), GFP_KERNEL
);
1008 memcpy(skb_put(skb
, sizeof(cmd
)), cmd
, sizeof(cmd
));
1009 skb_queue_tail(&hdev
->driver_init
, skb
);
1014 err
= usb_driver_claim_interface(&btusb_driver
,
1023 err
= hci_register_dev(hdev
);
1030 usb_set_intfdata(intf
, data
);
1035 static void btusb_disconnect(struct usb_interface
*intf
)
1037 struct btusb_data
*data
= usb_get_intfdata(intf
);
1038 struct hci_dev
*hdev
;
1040 BT_DBG("intf %p", intf
);
1047 __hci_dev_hold(hdev
);
1049 usb_set_intfdata(data
->intf
, NULL
);
1052 usb_set_intfdata(data
->isoc
, NULL
);
1054 hci_unregister_dev(hdev
);
1056 if (intf
== data
->isoc
)
1057 usb_driver_release_interface(&btusb_driver
, data
->intf
);
1058 else if (data
->isoc
)
1059 usb_driver_release_interface(&btusb_driver
, data
->isoc
);
1061 __hci_dev_put(hdev
);
1067 static int btusb_suspend(struct usb_interface
*intf
, pm_message_t message
)
1069 struct btusb_data
*data
= usb_get_intfdata(intf
);
1071 BT_DBG("intf %p", intf
);
1073 if (data
->suspend_count
++)
1076 spin_lock_irq(&data
->txlock
);
1077 if (!((message
.event
& PM_EVENT_AUTO
) && data
->tx_in_flight
)) {
1078 set_bit(BTUSB_SUSPENDING
, &data
->flags
);
1079 spin_unlock_irq(&data
->txlock
);
1081 spin_unlock_irq(&data
->txlock
);
1082 data
->suspend_count
--;
1086 cancel_work_sync(&data
->work
);
1088 btusb_stop_traffic(data
);
1089 usb_kill_anchored_urbs(&data
->tx_anchor
);
1094 static void play_deferred(struct btusb_data
*data
)
1099 while ((urb
= usb_get_from_anchor(&data
->deferred
))) {
1100 err
= usb_submit_urb(urb
, GFP_ATOMIC
);
1104 data
->tx_in_flight
++;
1106 usb_scuttle_anchored_urbs(&data
->deferred
);
1109 static int btusb_resume(struct usb_interface
*intf
)
1111 struct btusb_data
*data
= usb_get_intfdata(intf
);
1112 struct hci_dev
*hdev
= data
->hdev
;
1115 BT_DBG("intf %p", intf
);
1117 if (--data
->suspend_count
)
1120 if (!test_bit(HCI_RUNNING
, &hdev
->flags
))
1123 if (test_bit(BTUSB_INTR_RUNNING
, &data
->flags
)) {
1124 err
= btusb_submit_intr_urb(hdev
, GFP_NOIO
);
1126 clear_bit(BTUSB_INTR_RUNNING
, &data
->flags
);
1131 if (test_bit(BTUSB_BULK_RUNNING
, &data
->flags
)) {
1132 err
= btusb_submit_bulk_urb(hdev
, GFP_NOIO
);
1134 clear_bit(BTUSB_BULK_RUNNING
, &data
->flags
);
1138 btusb_submit_bulk_urb(hdev
, GFP_NOIO
);
1141 if (test_bit(BTUSB_ISOC_RUNNING
, &data
->flags
)) {
1142 if (btusb_submit_isoc_urb(hdev
, GFP_NOIO
) < 0)
1143 clear_bit(BTUSB_ISOC_RUNNING
, &data
->flags
);
1145 btusb_submit_isoc_urb(hdev
, GFP_NOIO
);
1148 spin_lock_irq(&data
->txlock
);
1149 play_deferred(data
);
1150 clear_bit(BTUSB_SUSPENDING
, &data
->flags
);
1151 spin_unlock_irq(&data
->txlock
);
1152 schedule_work(&data
->work
);
1157 usb_scuttle_anchored_urbs(&data
->deferred
);
1159 spin_lock_irq(&data
->txlock
);
1160 clear_bit(BTUSB_SUSPENDING
, &data
->flags
);
1161 spin_unlock_irq(&data
->txlock
);
1167 static struct usb_driver btusb_driver
= {
1169 .probe
= btusb_probe
,
1170 .disconnect
= btusb_disconnect
,
1172 .suspend
= btusb_suspend
,
1173 .resume
= btusb_resume
,
1175 .id_table
= btusb_table
,
1176 .supports_autosuspend
= 1,
1179 static int __init
btusb_init(void)
1181 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION
);
1183 return usb_register(&btusb_driver
);
1186 static void __exit
btusb_exit(void)
1188 usb_deregister(&btusb_driver
);
1191 module_init(btusb_init
);
1192 module_exit(btusb_exit
);
1194 module_param(ignore_dga
, bool, 0644);
1195 MODULE_PARM_DESC(ignore_dga
, "Ignore devices with id 08fd:0001");
1197 module_param(ignore_csr
, bool, 0644);
1198 MODULE_PARM_DESC(ignore_csr
, "Ignore devices with id 0a12:0001");
1200 module_param(ignore_sniffer
, bool, 0644);
1201 MODULE_PARM_DESC(ignore_sniffer
, "Ignore devices with id 0a12:0002");
1203 module_param(disable_scofix
, bool, 0644);
1204 MODULE_PARM_DESC(disable_scofix
, "Disable fixup of wrong SCO buffer size");
1206 module_param(force_scofix
, bool, 0644);
1207 MODULE_PARM_DESC(force_scofix
, "Force fixup of wrong SCO buffers size");
1209 module_param(reset
, bool, 0644);
1210 MODULE_PARM_DESC(reset
, "Send HCI reset command on initialization");
1212 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1213 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION
);
1214 MODULE_VERSION(VERSION
);
1215 MODULE_LICENSE("GPL");