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) },
63 { USB_DEVICE(0x05ac, 0x8215) },
65 /* AVM BlueFRITZ! USB v2.0 */
66 { USB_DEVICE(0x057c, 0x3800) },
68 /* Bluetooth Ultraport Module from IBM */
69 { USB_DEVICE(0x04bf, 0x030a) },
71 /* ALPS Modules with non-standard id */
72 { USB_DEVICE(0x044e, 0x3001) },
73 { USB_DEVICE(0x044e, 0x3002) },
75 /* Ericsson with non-standard id */
76 { USB_DEVICE(0x0bdb, 0x1002) },
78 /* Canyon CN-BTU1 with HID interfaces */
79 { USB_DEVICE(0x0c10, 0x0000) },
81 { } /* Terminating entry */
84 MODULE_DEVICE_TABLE(usb, btusb_table);
86 static struct usb_device_id blacklist_table[] = {
87 /* CSR BlueCore devices */
88 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
90 /* Broadcom BCM2033 without firmware */
91 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
93 /* Broadcom BCM2035 */
94 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
95 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
96 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
98 /* Broadcom BCM2045 */
99 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
100 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
102 /* IBM/Lenovo ThinkPad with Broadcom chip */
103 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
104 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
106 /* HP laptop with Broadcom chip */
107 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
109 /* Dell laptop with Broadcom chip */
110 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
112 /* Dell Wireless 370 and 410 devices */
113 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
114 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
116 /* Belkin F8T012 and F8T013 devices */
117 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
118 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
120 /* Asus WL-BTD202 device */
121 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
123 /* Kensington Bluetooth USB adapter */
124 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
126 /* RTX Telecom based adapters with buggy SCO support */
127 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
128 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
130 /* CONWISE Technology based adapters with buggy SCO support */
131 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
133 /* Digianswer devices */
134 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
135 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
137 /* CSR BlueCore Bluetooth Sniffer */
138 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
140 /* Frontline ComProbe Bluetooth Sniffer */
141 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
143 { } /* Terminating entry */
146 #define BTUSB_MAX_ISOC_FRAMES 10
148 #define BTUSB_INTR_RUNNING 0
149 #define BTUSB_BULK_RUNNING 1
150 #define BTUSB_ISOC_RUNNING 2
151 #define BTUSB_SUSPENDING 3
154 struct hci_dev *hdev;
155 struct usb_device *udev;
156 struct usb_interface *intf;
157 struct usb_interface *isoc;
163 struct work_struct work;
164 struct work_struct waker;
166 struct usb_anchor tx_anchor;
167 struct usb_anchor intr_anchor;
168 struct usb_anchor bulk_anchor;
169 struct usb_anchor isoc_anchor;
170 struct usb_anchor deferred;
174 struct usb_endpoint_descriptor *intr_ep;
175 struct usb_endpoint_descriptor *bulk_tx_ep;
176 struct usb_endpoint_descriptor *bulk_rx_ep;
177 struct usb_endpoint_descriptor *isoc_tx_ep;
178 struct usb_endpoint_descriptor *isoc_rx_ep;
182 unsigned int sco_num;
185 int did_iso_resume:1;
188 static int inc_tx(struct btusb_data *data)
193 spin_lock_irqsave(&data->txlock, flags);
194 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
196 data->tx_in_flight++;
197 spin_unlock_irqrestore(&data->txlock, flags);
202 static void btusb_intr_complete(struct urb *urb)
204 struct hci_dev *hdev = urb->context;
205 struct btusb_data *data = hdev->driver_data;
208 BT_DBG("%s urb %p status %d count %d", hdev->name,
209 urb, urb->status, urb->actual_length);
211 if (!test_bit(HCI_RUNNING, &hdev->flags))
214 if (urb->status == 0) {
215 hdev->stat.byte_rx += urb->actual_length;
217 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
218 urb->transfer_buffer,
219 urb->actual_length) < 0) {
220 BT_ERR("%s corrupted event packet", hdev->name);
225 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
228 usb_mark_last_busy(data->udev);
229 usb_anchor_urb(urb, &data->intr_anchor);
231 err = usb_submit_urb(urb, GFP_ATOMIC);
233 BT_ERR("%s urb %p failed to resubmit (%d)",
234 hdev->name, urb, -err);
235 usb_unanchor_urb(urb);
239 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
241 struct btusb_data *data = hdev->driver_data;
247 BT_DBG("%s", hdev->name);
252 urb = usb_alloc_urb(0, mem_flags);
256 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
258 buf = kmalloc(size, mem_flags);
264 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
266 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
267 btusb_intr_complete, hdev,
268 data->intr_ep->bInterval);
270 urb->transfer_flags |= URB_FREE_BUFFER;
272 usb_anchor_urb(urb, &data->intr_anchor);
274 err = usb_submit_urb(urb, mem_flags);
276 BT_ERR("%s urb %p submission failed (%d)",
277 hdev->name, urb, -err);
278 usb_unanchor_urb(urb);
286 static void btusb_bulk_complete(struct urb *urb)
288 struct hci_dev *hdev = urb->context;
289 struct btusb_data *data = hdev->driver_data;
292 BT_DBG("%s urb %p status %d count %d", hdev->name,
293 urb, urb->status, urb->actual_length);
295 if (!test_bit(HCI_RUNNING, &hdev->flags))
298 if (urb->status == 0) {
299 hdev->stat.byte_rx += urb->actual_length;
301 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
302 urb->transfer_buffer,
303 urb->actual_length) < 0) {
304 BT_ERR("%s corrupted ACL packet", hdev->name);
309 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
312 usb_anchor_urb(urb, &data->bulk_anchor);
313 usb_mark_last_busy(data->udev);
315 err = usb_submit_urb(urb, GFP_ATOMIC);
317 BT_ERR("%s urb %p failed to resubmit (%d)",
318 hdev->name, urb, -err);
319 usb_unanchor_urb(urb);
323 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
325 struct btusb_data *data = hdev->driver_data;
329 int err, size = HCI_MAX_FRAME_SIZE;
331 BT_DBG("%s", hdev->name);
333 if (!data->bulk_rx_ep)
336 urb = usb_alloc_urb(0, mem_flags);
340 buf = kmalloc(size, mem_flags);
346 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
348 usb_fill_bulk_urb(urb, data->udev, pipe,
349 buf, size, btusb_bulk_complete, hdev);
351 urb->transfer_flags |= URB_FREE_BUFFER;
353 usb_mark_last_busy(data->udev);
354 usb_anchor_urb(urb, &data->bulk_anchor);
356 err = usb_submit_urb(urb, mem_flags);
358 BT_ERR("%s urb %p submission failed (%d)",
359 hdev->name, urb, -err);
360 usb_unanchor_urb(urb);
368 static void btusb_isoc_complete(struct urb *urb)
370 struct hci_dev *hdev = urb->context;
371 struct btusb_data *data = hdev->driver_data;
374 BT_DBG("%s urb %p status %d count %d", hdev->name,
375 urb, urb->status, urb->actual_length);
377 if (!test_bit(HCI_RUNNING, &hdev->flags))
380 if (urb->status == 0) {
381 for (i = 0; i < urb->number_of_packets; i++) {
382 unsigned int offset = urb->iso_frame_desc[i].offset;
383 unsigned int length = urb->iso_frame_desc[i].actual_length;
385 if (urb->iso_frame_desc[i].status)
388 hdev->stat.byte_rx += length;
390 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
391 urb->transfer_buffer + offset,
393 BT_ERR("%s corrupted SCO packet", hdev->name);
399 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
402 usb_anchor_urb(urb, &data->isoc_anchor);
404 err = usb_submit_urb(urb, GFP_ATOMIC);
406 BT_ERR("%s urb %p failed to resubmit (%d)",
407 hdev->name, urb, -err);
408 usb_unanchor_urb(urb);
412 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
416 BT_DBG("len %d mtu %d", len, mtu);
418 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
419 i++, offset += mtu, len -= mtu) {
420 urb->iso_frame_desc[i].offset = offset;
421 urb->iso_frame_desc[i].length = mtu;
424 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
425 urb->iso_frame_desc[i].offset = offset;
426 urb->iso_frame_desc[i].length = len;
430 urb->number_of_packets = i;
433 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
435 struct btusb_data *data = hdev->driver_data;
441 BT_DBG("%s", hdev->name);
443 if (!data->isoc_rx_ep)
446 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
450 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
451 BTUSB_MAX_ISOC_FRAMES;
453 buf = kmalloc(size, mem_flags);
459 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
461 urb->dev = data->udev;
464 urb->complete = btusb_isoc_complete;
465 urb->interval = data->isoc_rx_ep->bInterval;
467 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
468 urb->transfer_buffer = buf;
469 urb->transfer_buffer_length = size;
471 __fill_isoc_descriptor(urb, size,
472 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
474 usb_anchor_urb(urb, &data->isoc_anchor);
476 err = usb_submit_urb(urb, mem_flags);
478 BT_ERR("%s urb %p submission failed (%d)",
479 hdev->name, urb, -err);
480 usb_unanchor_urb(urb);
488 static void btusb_tx_complete(struct urb *urb)
490 struct sk_buff *skb = urb->context;
491 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
492 struct btusb_data *data = hdev->driver_data;
494 BT_DBG("%s urb %p status %d count %d", hdev->name,
495 urb, urb->status, urb->actual_length);
497 if (!test_bit(HCI_RUNNING, &hdev->flags))
501 hdev->stat.byte_tx += urb->transfer_buffer_length;
506 spin_lock(&data->txlock);
507 data->tx_in_flight--;
508 spin_unlock(&data->txlock);
510 kfree(urb->setup_packet);
515 static void btusb_isoc_tx_complete(struct urb *urb)
517 struct sk_buff *skb = urb->context;
518 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
520 BT_DBG("%s urb %p status %d count %d", hdev->name,
521 urb, urb->status, urb->actual_length);
523 if (!test_bit(HCI_RUNNING, &hdev->flags))
527 hdev->stat.byte_tx += urb->transfer_buffer_length;
532 kfree(urb->setup_packet);
537 static int btusb_open(struct hci_dev *hdev)
539 struct btusb_data *data = hdev->driver_data;
542 BT_DBG("%s", hdev->name);
544 err = usb_autopm_get_interface(data->intf);
548 data->intf->needs_remote_wakeup = 1;
550 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
553 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
556 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
560 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
562 usb_kill_anchored_urbs(&data->intr_anchor);
566 set_bit(BTUSB_BULK_RUNNING, &data->flags);
567 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
570 usb_autopm_put_interface(data->intf);
574 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
575 clear_bit(HCI_RUNNING, &hdev->flags);
576 usb_autopm_put_interface(data->intf);
580 static void btusb_stop_traffic(struct btusb_data *data)
582 usb_kill_anchored_urbs(&data->intr_anchor);
583 usb_kill_anchored_urbs(&data->bulk_anchor);
584 usb_kill_anchored_urbs(&data->isoc_anchor);
587 static int btusb_close(struct hci_dev *hdev)
589 struct btusb_data *data = hdev->driver_data;
592 BT_DBG("%s", hdev->name);
594 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
597 cancel_work_sync(&data->work);
598 cancel_work_sync(&data->waker);
600 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
601 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
602 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
604 btusb_stop_traffic(data);
605 err = usb_autopm_get_interface(data->intf);
609 data->intf->needs_remote_wakeup = 0;
610 usb_autopm_put_interface(data->intf);
613 usb_scuttle_anchored_urbs(&data->deferred);
617 static int btusb_flush(struct hci_dev *hdev)
619 struct btusb_data *data = hdev->driver_data;
621 BT_DBG("%s", hdev->name);
623 usb_kill_anchored_urbs(&data->tx_anchor);
628 static int btusb_send_frame(struct sk_buff *skb)
630 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
631 struct btusb_data *data = hdev->driver_data;
632 struct usb_ctrlrequest *dr;
637 BT_DBG("%s", hdev->name);
639 if (!test_bit(HCI_RUNNING, &hdev->flags))
642 switch (bt_cb(skb)->pkt_type) {
643 case HCI_COMMAND_PKT:
644 urb = usb_alloc_urb(0, GFP_ATOMIC);
648 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
654 dr->bRequestType = data->cmdreq_type;
658 dr->wLength = __cpu_to_le16(skb->len);
660 pipe = usb_sndctrlpipe(data->udev, 0x00);
662 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
663 skb->data, skb->len, btusb_tx_complete, skb);
668 case HCI_ACLDATA_PKT:
669 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
672 urb = usb_alloc_urb(0, GFP_ATOMIC);
676 pipe = usb_sndbulkpipe(data->udev,
677 data->bulk_tx_ep->bEndpointAddress);
679 usb_fill_bulk_urb(urb, data->udev, pipe,
680 skb->data, skb->len, btusb_tx_complete, skb);
685 case HCI_SCODATA_PKT:
686 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
689 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
693 pipe = usb_sndisocpipe(data->udev,
694 data->isoc_tx_ep->bEndpointAddress);
696 urb->dev = data->udev;
699 urb->complete = btusb_isoc_tx_complete;
700 urb->interval = data->isoc_tx_ep->bInterval;
702 urb->transfer_flags = URB_ISO_ASAP;
703 urb->transfer_buffer = skb->data;
704 urb->transfer_buffer_length = skb->len;
706 __fill_isoc_descriptor(urb, skb->len,
707 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
718 usb_anchor_urb(urb, &data->deferred);
719 schedule_work(&data->waker);
725 usb_anchor_urb(urb, &data->tx_anchor);
727 err = usb_submit_urb(urb, GFP_ATOMIC);
729 BT_ERR("%s urb %p submission failed", hdev->name, urb);
730 kfree(urb->setup_packet);
731 usb_unanchor_urb(urb);
733 usb_mark_last_busy(data->udev);
742 static void btusb_destruct(struct hci_dev *hdev)
744 struct btusb_data *data = hdev->driver_data;
746 BT_DBG("%s", hdev->name);
751 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
753 struct btusb_data *data = hdev->driver_data;
755 BT_DBG("%s evt %d", hdev->name, evt);
757 if (hdev->conn_hash.sco_num != data->sco_num) {
758 data->sco_num = hdev->conn_hash.sco_num;
759 schedule_work(&data->work);
763 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
765 struct btusb_data *data = hdev->driver_data;
766 struct usb_interface *intf = data->isoc;
767 struct usb_endpoint_descriptor *ep_desc;
773 err = usb_set_interface(data->udev, 1, altsetting);
775 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
779 data->isoc_altsetting = altsetting;
781 data->isoc_tx_ep = NULL;
782 data->isoc_rx_ep = NULL;
784 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
785 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
787 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
788 data->isoc_tx_ep = ep_desc;
792 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
793 data->isoc_rx_ep = ep_desc;
798 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
799 BT_ERR("%s invalid SCO descriptors", hdev->name);
806 static void btusb_work(struct work_struct *work)
808 struct btusb_data *data = container_of(work, struct btusb_data, work);
809 struct hci_dev *hdev = data->hdev;
812 if (hdev->conn_hash.sco_num > 0) {
813 if (!data->did_iso_resume) {
814 err = usb_autopm_get_interface(data->isoc);
816 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
817 usb_kill_anchored_urbs(&data->isoc_anchor);
821 data->did_iso_resume = 1;
823 if (data->isoc_altsetting != 2) {
824 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
825 usb_kill_anchored_urbs(&data->isoc_anchor);
827 if (__set_isoc_interface(hdev, 2) < 0)
831 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
832 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
833 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
835 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
838 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
839 usb_kill_anchored_urbs(&data->isoc_anchor);
841 __set_isoc_interface(hdev, 0);
842 if (data->did_iso_resume) {
843 data->did_iso_resume = 0;
844 usb_autopm_put_interface(data->isoc);
849 static void btusb_waker(struct work_struct *work)
851 struct btusb_data *data = container_of(work, struct btusb_data, waker);
854 err = usb_autopm_get_interface(data->intf);
858 usb_autopm_put_interface(data->intf);
861 static int btusb_probe(struct usb_interface *intf,
862 const struct usb_device_id *id)
864 struct usb_endpoint_descriptor *ep_desc;
865 struct btusb_data *data;
866 struct hci_dev *hdev;
869 BT_DBG("intf %p id %p", intf, id);
871 /* interface numbers are hardcoded in the spec */
872 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
875 if (!id->driver_info) {
876 const struct usb_device_id *match;
877 match = usb_match_id(intf, blacklist_table);
882 if (id->driver_info == BTUSB_IGNORE)
885 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
888 if (ignore_csr && id->driver_info & BTUSB_CSR)
891 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
894 data = kzalloc(sizeof(*data), GFP_KERNEL);
898 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
899 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
901 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
902 data->intr_ep = ep_desc;
906 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
907 data->bulk_tx_ep = ep_desc;
911 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
912 data->bulk_rx_ep = ep_desc;
917 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
922 data->cmdreq_type = USB_TYPE_CLASS;
924 data->udev = interface_to_usbdev(intf);
927 spin_lock_init(&data->lock);
929 INIT_WORK(&data->work, btusb_work);
930 INIT_WORK(&data->waker, btusb_waker);
931 spin_lock_init(&data->txlock);
933 init_usb_anchor(&data->tx_anchor);
934 init_usb_anchor(&data->intr_anchor);
935 init_usb_anchor(&data->bulk_anchor);
936 init_usb_anchor(&data->isoc_anchor);
937 init_usb_anchor(&data->deferred);
939 hdev = hci_alloc_dev();
945 hdev->type = HCI_USB;
946 hdev->driver_data = data;
950 SET_HCIDEV_DEV(hdev, &intf->dev);
952 hdev->open = btusb_open;
953 hdev->close = btusb_close;
954 hdev->flush = btusb_flush;
955 hdev->send = btusb_send_frame;
956 hdev->destruct = btusb_destruct;
957 hdev->notify = btusb_notify;
959 hdev->owner = THIS_MODULE;
961 /* Interface numbers are hardcoded in the specification */
962 data->isoc = usb_ifnum_to_if(data->udev, 1);
965 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
967 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
969 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
972 if (id->driver_info & BTUSB_BROKEN_ISOC)
975 if (id->driver_info & BTUSB_DIGIANSWER) {
976 data->cmdreq_type = USB_TYPE_VENDOR;
977 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
980 if (id->driver_info & BTUSB_CSR) {
981 struct usb_device *udev = data->udev;
983 /* Old firmware would otherwise execute USB reset */
984 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
985 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
988 if (id->driver_info & BTUSB_SNIFFER) {
989 struct usb_device *udev = data->udev;
991 /* New sniffer firmware has crippled HCI interface */
992 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
993 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
998 if (id->driver_info & BTUSB_BCM92035) {
999 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1000 struct sk_buff *skb;
1002 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1004 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1005 skb_queue_tail(&hdev->driver_init, skb);
1010 err = usb_driver_claim_interface(&btusb_driver,
1019 err = hci_register_dev(hdev);
1026 usb_set_intfdata(intf, data);
1031 static void btusb_disconnect(struct usb_interface *intf)
1033 struct btusb_data *data = usb_get_intfdata(intf);
1034 struct hci_dev *hdev;
1036 BT_DBG("intf %p", intf);
1043 __hci_dev_hold(hdev);
1045 usb_set_intfdata(data->intf, NULL);
1048 usb_set_intfdata(data->isoc, NULL);
1050 hci_unregister_dev(hdev);
1052 if (intf == data->isoc)
1053 usb_driver_release_interface(&btusb_driver, data->intf);
1054 else if (data->isoc)
1055 usb_driver_release_interface(&btusb_driver, data->isoc);
1057 __hci_dev_put(hdev);
1063 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1065 struct btusb_data *data = usb_get_intfdata(intf);
1067 BT_DBG("intf %p", intf);
1069 if (data->suspend_count++)
1072 spin_lock_irq(&data->txlock);
1073 if (!(interface_to_usbdev(intf)->auto_pm && data->tx_in_flight)) {
1074 set_bit(BTUSB_SUSPENDING, &data->flags);
1075 spin_unlock_irq(&data->txlock);
1077 spin_unlock_irq(&data->txlock);
1078 data->suspend_count--;
1082 cancel_work_sync(&data->work);
1084 btusb_stop_traffic(data);
1085 usb_kill_anchored_urbs(&data->tx_anchor);
1090 static void play_deferred(struct btusb_data *data)
1095 while ((urb = usb_get_from_anchor(&data->deferred))) {
1096 err = usb_submit_urb(urb, GFP_ATOMIC);
1100 data->tx_in_flight++;
1102 usb_scuttle_anchored_urbs(&data->deferred);
1105 static int btusb_resume(struct usb_interface *intf)
1107 struct btusb_data *data = usb_get_intfdata(intf);
1108 struct hci_dev *hdev = data->hdev;
1111 BT_DBG("intf %p", intf);
1113 if (--data->suspend_count)
1116 if (!test_bit(HCI_RUNNING, &hdev->flags))
1119 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1120 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1122 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1127 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1128 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1130 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1134 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1137 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1138 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1139 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1141 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1144 spin_lock_irq(&data->txlock);
1145 play_deferred(data);
1146 clear_bit(BTUSB_SUSPENDING, &data->flags);
1147 spin_unlock_irq(&data->txlock);
1148 schedule_work(&data->work);
1153 usb_scuttle_anchored_urbs(&data->deferred);
1155 spin_lock_irq(&data->txlock);
1156 clear_bit(BTUSB_SUSPENDING, &data->flags);
1157 spin_unlock_irq(&data->txlock);
1163 static struct usb_driver btusb_driver = {
1165 .probe = btusb_probe,
1166 .disconnect = btusb_disconnect,
1168 .suspend = btusb_suspend,
1169 .resume = btusb_resume,
1171 .id_table = btusb_table,
1172 .supports_autosuspend = 1,
1175 static int __init btusb_init(void)
1177 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1179 return usb_register(&btusb_driver);
1182 static void __exit btusb_exit(void)
1184 usb_deregister(&btusb_driver);
1187 module_init(btusb_init);
1188 module_exit(btusb_exit);
1190 module_param(ignore_dga, bool, 0644);
1191 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1193 module_param(ignore_csr, bool, 0644);
1194 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1196 module_param(ignore_sniffer, bool, 0644);
1197 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1199 module_param(disable_scofix, bool, 0644);
1200 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1202 module_param(force_scofix, bool, 0644);
1203 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1205 module_param(reset, bool, 0644);
1206 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1208 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1209 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1210 MODULE_VERSION(VERSION);
1211 MODULE_LICENSE("GPL");