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 /* Apple MacBookAir3,1, MacBookAir3,2 */
72 { USB_DEVICE(0x05ac, 0x821b) },
74 /* AVM BlueFRITZ! USB v2.0 */
75 { USB_DEVICE(0x057c, 0x3800) },
77 /* Bluetooth Ultraport Module from IBM */
78 { USB_DEVICE(0x04bf, 0x030a) },
80 /* ALPS Modules with non-standard id */
81 { USB_DEVICE(0x044e, 0x3001) },
82 { USB_DEVICE(0x044e, 0x3002) },
84 /* Ericsson with non-standard id */
85 { USB_DEVICE(0x0bdb, 0x1002) },
87 /* Canyon CN-BTU1 with HID interfaces */
88 { USB_DEVICE(0x0c10, 0x0000) },
90 { } /* Terminating entry */
93 MODULE_DEVICE_TABLE(usb, btusb_table);
95 static struct usb_device_id blacklist_table[] = {
96 /* CSR BlueCore devices */
97 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
99 /* Broadcom BCM2033 without firmware */
100 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
102 /* Broadcom BCM2035 */
103 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
104 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
105 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
107 /* Broadcom BCM2045 */
108 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
109 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
111 /* IBM/Lenovo ThinkPad with Broadcom chip */
112 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
113 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
115 /* HP laptop with Broadcom chip */
116 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
118 /* Dell laptop with Broadcom chip */
119 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
121 /* Dell Wireless 370 and 410 devices */
122 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
123 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
125 /* Belkin F8T012 and F8T013 devices */
126 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
127 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
129 /* Asus WL-BTD202 device */
130 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
132 /* Kensington Bluetooth USB adapter */
133 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
135 /* RTX Telecom based adapters with buggy SCO support */
136 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
137 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
139 /* CONWISE Technology based adapters with buggy SCO support */
140 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
142 /* Digianswer devices */
143 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
144 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
146 /* CSR BlueCore Bluetooth Sniffer */
147 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
149 /* Frontline ComProbe Bluetooth Sniffer */
150 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
152 { } /* Terminating entry */
155 #define BTUSB_MAX_ISOC_FRAMES 10
157 #define BTUSB_INTR_RUNNING 0
158 #define BTUSB_BULK_RUNNING 1
159 #define BTUSB_ISOC_RUNNING 2
160 #define BTUSB_SUSPENDING 3
161 #define BTUSB_DID_ISO_RESUME 4
164 struct hci_dev *hdev;
165 struct usb_device *udev;
166 struct usb_interface *intf;
167 struct usb_interface *isoc;
173 struct work_struct work;
174 struct work_struct waker;
176 struct usb_anchor tx_anchor;
177 struct usb_anchor intr_anchor;
178 struct usb_anchor bulk_anchor;
179 struct usb_anchor isoc_anchor;
180 struct usb_anchor deferred;
184 struct usb_endpoint_descriptor *intr_ep;
185 struct usb_endpoint_descriptor *bulk_tx_ep;
186 struct usb_endpoint_descriptor *bulk_rx_ep;
187 struct usb_endpoint_descriptor *isoc_tx_ep;
188 struct usb_endpoint_descriptor *isoc_rx_ep;
192 unsigned int sco_num;
197 static int inc_tx(struct btusb_data *data)
202 spin_lock_irqsave(&data->txlock, flags);
203 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
205 data->tx_in_flight++;
206 spin_unlock_irqrestore(&data->txlock, flags);
211 static void btusb_intr_complete(struct urb *urb)
213 struct hci_dev *hdev = urb->context;
214 struct btusb_data *data = hdev->driver_data;
217 BT_DBG("%s urb %p status %d count %d", hdev->name,
218 urb, urb->status, urb->actual_length);
220 if (!test_bit(HCI_RUNNING, &hdev->flags))
223 if (urb->status == 0) {
224 hdev->stat.byte_rx += urb->actual_length;
226 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
227 urb->transfer_buffer,
228 urb->actual_length) < 0) {
229 BT_ERR("%s corrupted event packet", hdev->name);
234 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
237 usb_mark_last_busy(data->udev);
238 usb_anchor_urb(urb, &data->intr_anchor);
240 err = usb_submit_urb(urb, GFP_ATOMIC);
242 BT_ERR("%s urb %p failed to resubmit (%d)",
243 hdev->name, urb, -err);
244 usb_unanchor_urb(urb);
248 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
250 struct btusb_data *data = hdev->driver_data;
256 BT_DBG("%s", hdev->name);
261 urb = usb_alloc_urb(0, mem_flags);
265 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
267 buf = kmalloc(size, mem_flags);
273 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
275 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
276 btusb_intr_complete, hdev,
277 data->intr_ep->bInterval);
279 urb->transfer_flags |= URB_FREE_BUFFER;
281 usb_anchor_urb(urb, &data->intr_anchor);
283 err = usb_submit_urb(urb, mem_flags);
285 BT_ERR("%s urb %p submission failed (%d)",
286 hdev->name, urb, -err);
287 usb_unanchor_urb(urb);
295 static void btusb_bulk_complete(struct urb *urb)
297 struct hci_dev *hdev = urb->context;
298 struct btusb_data *data = hdev->driver_data;
301 BT_DBG("%s urb %p status %d count %d", hdev->name,
302 urb, urb->status, urb->actual_length);
304 if (!test_bit(HCI_RUNNING, &hdev->flags))
307 if (urb->status == 0) {
308 hdev->stat.byte_rx += urb->actual_length;
310 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
311 urb->transfer_buffer,
312 urb->actual_length) < 0) {
313 BT_ERR("%s corrupted ACL packet", hdev->name);
318 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
321 usb_anchor_urb(urb, &data->bulk_anchor);
322 usb_mark_last_busy(data->udev);
324 err = usb_submit_urb(urb, GFP_ATOMIC);
326 BT_ERR("%s urb %p failed to resubmit (%d)",
327 hdev->name, urb, -err);
328 usb_unanchor_urb(urb);
332 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
334 struct btusb_data *data = hdev->driver_data;
338 int err, size = HCI_MAX_FRAME_SIZE;
340 BT_DBG("%s", hdev->name);
342 if (!data->bulk_rx_ep)
345 urb = usb_alloc_urb(0, mem_flags);
349 buf = kmalloc(size, mem_flags);
355 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
357 usb_fill_bulk_urb(urb, data->udev, pipe,
358 buf, size, btusb_bulk_complete, hdev);
360 urb->transfer_flags |= URB_FREE_BUFFER;
362 usb_mark_last_busy(data->udev);
363 usb_anchor_urb(urb, &data->bulk_anchor);
365 err = usb_submit_urb(urb, mem_flags);
367 BT_ERR("%s urb %p submission failed (%d)",
368 hdev->name, urb, -err);
369 usb_unanchor_urb(urb);
377 static void btusb_isoc_complete(struct urb *urb)
379 struct hci_dev *hdev = urb->context;
380 struct btusb_data *data = hdev->driver_data;
383 BT_DBG("%s urb %p status %d count %d", hdev->name,
384 urb, urb->status, urb->actual_length);
386 if (!test_bit(HCI_RUNNING, &hdev->flags))
389 if (urb->status == 0) {
390 for (i = 0; i < urb->number_of_packets; i++) {
391 unsigned int offset = urb->iso_frame_desc[i].offset;
392 unsigned int length = urb->iso_frame_desc[i].actual_length;
394 if (urb->iso_frame_desc[i].status)
397 hdev->stat.byte_rx += length;
399 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
400 urb->transfer_buffer + offset,
402 BT_ERR("%s corrupted SCO packet", hdev->name);
408 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
411 usb_anchor_urb(urb, &data->isoc_anchor);
413 err = usb_submit_urb(urb, GFP_ATOMIC);
415 BT_ERR("%s urb %p failed to resubmit (%d)",
416 hdev->name, urb, -err);
417 usb_unanchor_urb(urb);
421 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
425 BT_DBG("len %d mtu %d", len, mtu);
427 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
428 i++, offset += mtu, len -= mtu) {
429 urb->iso_frame_desc[i].offset = offset;
430 urb->iso_frame_desc[i].length = mtu;
433 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
434 urb->iso_frame_desc[i].offset = offset;
435 urb->iso_frame_desc[i].length = len;
439 urb->number_of_packets = i;
442 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
444 struct btusb_data *data = hdev->driver_data;
450 BT_DBG("%s", hdev->name);
452 if (!data->isoc_rx_ep)
455 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
459 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
460 BTUSB_MAX_ISOC_FRAMES;
462 buf = kmalloc(size, mem_flags);
468 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
470 urb->dev = data->udev;
473 urb->complete = btusb_isoc_complete;
474 urb->interval = data->isoc_rx_ep->bInterval;
476 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
477 urb->transfer_buffer = buf;
478 urb->transfer_buffer_length = size;
480 __fill_isoc_descriptor(urb, size,
481 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
483 usb_anchor_urb(urb, &data->isoc_anchor);
485 err = usb_submit_urb(urb, mem_flags);
487 BT_ERR("%s urb %p submission failed (%d)",
488 hdev->name, urb, -err);
489 usb_unanchor_urb(urb);
497 static void btusb_tx_complete(struct urb *urb)
499 struct sk_buff *skb = urb->context;
500 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
501 struct btusb_data *data = hdev->driver_data;
503 BT_DBG("%s urb %p status %d count %d", hdev->name,
504 urb, urb->status, urb->actual_length);
506 if (!test_bit(HCI_RUNNING, &hdev->flags))
510 hdev->stat.byte_tx += urb->transfer_buffer_length;
515 spin_lock(&data->txlock);
516 data->tx_in_flight--;
517 spin_unlock(&data->txlock);
519 kfree(urb->setup_packet);
524 static void btusb_isoc_tx_complete(struct urb *urb)
526 struct sk_buff *skb = urb->context;
527 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
529 BT_DBG("%s urb %p status %d count %d", hdev->name,
530 urb, urb->status, urb->actual_length);
532 if (!test_bit(HCI_RUNNING, &hdev->flags))
536 hdev->stat.byte_tx += urb->transfer_buffer_length;
541 kfree(urb->setup_packet);
546 static int btusb_open(struct hci_dev *hdev)
548 struct btusb_data *data = hdev->driver_data;
551 BT_DBG("%s", hdev->name);
553 err = usb_autopm_get_interface(data->intf);
557 data->intf->needs_remote_wakeup = 1;
559 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
562 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
565 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
569 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
571 usb_kill_anchored_urbs(&data->intr_anchor);
575 set_bit(BTUSB_BULK_RUNNING, &data->flags);
576 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
579 usb_autopm_put_interface(data->intf);
583 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
584 clear_bit(HCI_RUNNING, &hdev->flags);
585 usb_autopm_put_interface(data->intf);
589 static void btusb_stop_traffic(struct btusb_data *data)
591 usb_kill_anchored_urbs(&data->intr_anchor);
592 usb_kill_anchored_urbs(&data->bulk_anchor);
593 usb_kill_anchored_urbs(&data->isoc_anchor);
596 static int btusb_close(struct hci_dev *hdev)
598 struct btusb_data *data = hdev->driver_data;
601 BT_DBG("%s", hdev->name);
603 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
606 cancel_work_sync(&data->work);
607 cancel_work_sync(&data->waker);
609 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
610 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
611 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
613 btusb_stop_traffic(data);
614 err = usb_autopm_get_interface(data->intf);
618 data->intf->needs_remote_wakeup = 0;
619 usb_autopm_put_interface(data->intf);
622 usb_scuttle_anchored_urbs(&data->deferred);
626 static int btusb_flush(struct hci_dev *hdev)
628 struct btusb_data *data = hdev->driver_data;
630 BT_DBG("%s", hdev->name);
632 usb_kill_anchored_urbs(&data->tx_anchor);
637 static int btusb_send_frame(struct sk_buff *skb)
639 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
640 struct btusb_data *data = hdev->driver_data;
641 struct usb_ctrlrequest *dr;
646 BT_DBG("%s", hdev->name);
648 if (!test_bit(HCI_RUNNING, &hdev->flags))
651 switch (bt_cb(skb)->pkt_type) {
652 case HCI_COMMAND_PKT:
653 urb = usb_alloc_urb(0, GFP_ATOMIC);
657 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
663 dr->bRequestType = data->cmdreq_type;
667 dr->wLength = __cpu_to_le16(skb->len);
669 pipe = usb_sndctrlpipe(data->udev, 0x00);
671 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
672 skb->data, skb->len, btusb_tx_complete, skb);
677 case HCI_ACLDATA_PKT:
678 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
681 urb = usb_alloc_urb(0, GFP_ATOMIC);
685 pipe = usb_sndbulkpipe(data->udev,
686 data->bulk_tx_ep->bEndpointAddress);
688 usb_fill_bulk_urb(urb, data->udev, pipe,
689 skb->data, skb->len, btusb_tx_complete, skb);
694 case HCI_SCODATA_PKT:
695 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
698 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
702 pipe = usb_sndisocpipe(data->udev,
703 data->isoc_tx_ep->bEndpointAddress);
705 urb->dev = data->udev;
708 urb->complete = btusb_isoc_tx_complete;
709 urb->interval = data->isoc_tx_ep->bInterval;
711 urb->transfer_flags = URB_ISO_ASAP;
712 urb->transfer_buffer = skb->data;
713 urb->transfer_buffer_length = skb->len;
715 __fill_isoc_descriptor(urb, skb->len,
716 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
727 usb_anchor_urb(urb, &data->deferred);
728 schedule_work(&data->waker);
734 usb_anchor_urb(urb, &data->tx_anchor);
736 err = usb_submit_urb(urb, GFP_ATOMIC);
738 BT_ERR("%s urb %p submission failed", hdev->name, urb);
739 kfree(urb->setup_packet);
740 usb_unanchor_urb(urb);
742 usb_mark_last_busy(data->udev);
751 static void btusb_destruct(struct hci_dev *hdev)
753 struct btusb_data *data = hdev->driver_data;
755 BT_DBG("%s", hdev->name);
760 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
762 struct btusb_data *data = hdev->driver_data;
764 BT_DBG("%s evt %d", hdev->name, evt);
766 if (hdev->conn_hash.sco_num != data->sco_num) {
767 data->sco_num = hdev->conn_hash.sco_num;
768 schedule_work(&data->work);
772 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
774 struct btusb_data *data = hdev->driver_data;
775 struct usb_interface *intf = data->isoc;
776 struct usb_endpoint_descriptor *ep_desc;
782 err = usb_set_interface(data->udev, 1, altsetting);
784 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
788 data->isoc_altsetting = altsetting;
790 data->isoc_tx_ep = NULL;
791 data->isoc_rx_ep = NULL;
793 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
794 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
796 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
797 data->isoc_tx_ep = ep_desc;
801 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
802 data->isoc_rx_ep = ep_desc;
807 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
808 BT_ERR("%s invalid SCO descriptors", hdev->name);
815 static void btusb_work(struct work_struct *work)
817 struct btusb_data *data = container_of(work, struct btusb_data, work);
818 struct hci_dev *hdev = data->hdev;
821 if (hdev->conn_hash.sco_num > 0) {
822 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
823 err = usb_autopm_get_interface(data->isoc);
825 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
826 usb_kill_anchored_urbs(&data->isoc_anchor);
830 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
832 if (data->isoc_altsetting != 2) {
833 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
834 usb_kill_anchored_urbs(&data->isoc_anchor);
836 if (__set_isoc_interface(hdev, 2) < 0)
840 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
841 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
842 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
844 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
847 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
848 usb_kill_anchored_urbs(&data->isoc_anchor);
850 __set_isoc_interface(hdev, 0);
851 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
852 usb_autopm_put_interface(data->isoc);
856 static void btusb_waker(struct work_struct *work)
858 struct btusb_data *data = container_of(work, struct btusb_data, waker);
861 err = usb_autopm_get_interface(data->intf);
865 usb_autopm_put_interface(data->intf);
868 static int btusb_probe(struct usb_interface *intf,
869 const struct usb_device_id *id)
871 struct usb_endpoint_descriptor *ep_desc;
872 struct btusb_data *data;
873 struct hci_dev *hdev;
876 BT_DBG("intf %p id %p", intf, id);
878 /* interface numbers are hardcoded in the spec */
879 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
882 if (!id->driver_info) {
883 const struct usb_device_id *match;
884 match = usb_match_id(intf, blacklist_table);
889 if (id->driver_info == BTUSB_IGNORE)
892 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
895 if (ignore_csr && id->driver_info & BTUSB_CSR)
898 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
901 data = kzalloc(sizeof(*data), GFP_KERNEL);
905 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
906 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
908 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
909 data->intr_ep = ep_desc;
913 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
914 data->bulk_tx_ep = ep_desc;
918 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
919 data->bulk_rx_ep = ep_desc;
924 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
929 data->cmdreq_type = USB_TYPE_CLASS;
931 data->udev = interface_to_usbdev(intf);
934 spin_lock_init(&data->lock);
936 INIT_WORK(&data->work, btusb_work);
937 INIT_WORK(&data->waker, btusb_waker);
938 spin_lock_init(&data->txlock);
940 init_usb_anchor(&data->tx_anchor);
941 init_usb_anchor(&data->intr_anchor);
942 init_usb_anchor(&data->bulk_anchor);
943 init_usb_anchor(&data->isoc_anchor);
944 init_usb_anchor(&data->deferred);
946 hdev = hci_alloc_dev();
953 hdev->driver_data = data;
957 SET_HCIDEV_DEV(hdev, &intf->dev);
959 hdev->open = btusb_open;
960 hdev->close = btusb_close;
961 hdev->flush = btusb_flush;
962 hdev->send = btusb_send_frame;
963 hdev->destruct = btusb_destruct;
964 hdev->notify = btusb_notify;
966 hdev->owner = THIS_MODULE;
968 /* Interface numbers are hardcoded in the specification */
969 data->isoc = usb_ifnum_to_if(data->udev, 1);
972 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
974 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
976 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
979 if (id->driver_info & BTUSB_BROKEN_ISOC)
982 if (id->driver_info & BTUSB_DIGIANSWER) {
983 data->cmdreq_type = USB_TYPE_VENDOR;
984 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
987 if (id->driver_info & BTUSB_CSR) {
988 struct usb_device *udev = data->udev;
990 /* Old firmware would otherwise execute USB reset */
991 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
992 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
995 if (id->driver_info & BTUSB_SNIFFER) {
996 struct usb_device *udev = data->udev;
998 /* New sniffer firmware has crippled HCI interface */
999 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1000 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1005 if (id->driver_info & BTUSB_BCM92035) {
1006 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1007 struct sk_buff *skb;
1009 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1011 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1012 skb_queue_tail(&hdev->driver_init, skb);
1017 err = usb_driver_claim_interface(&btusb_driver,
1026 err = hci_register_dev(hdev);
1033 usb_set_intfdata(intf, data);
1035 usb_enable_autosuspend(interface_to_usbdev(intf));
1040 static void btusb_disconnect(struct usb_interface *intf)
1042 struct btusb_data *data = usb_get_intfdata(intf);
1043 struct hci_dev *hdev;
1045 BT_DBG("intf %p", intf);
1052 __hci_dev_hold(hdev);
1054 usb_set_intfdata(data->intf, NULL);
1057 usb_set_intfdata(data->isoc, NULL);
1059 hci_unregister_dev(hdev);
1061 if (intf == data->isoc)
1062 usb_driver_release_interface(&btusb_driver, data->intf);
1063 else if (data->isoc)
1064 usb_driver_release_interface(&btusb_driver, data->isoc);
1066 __hci_dev_put(hdev);
1072 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1074 struct btusb_data *data = usb_get_intfdata(intf);
1076 BT_DBG("intf %p", intf);
1078 if (data->suspend_count++)
1081 spin_lock_irq(&data->txlock);
1082 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1083 set_bit(BTUSB_SUSPENDING, &data->flags);
1084 spin_unlock_irq(&data->txlock);
1086 spin_unlock_irq(&data->txlock);
1087 data->suspend_count--;
1091 cancel_work_sync(&data->work);
1093 btusb_stop_traffic(data);
1094 usb_kill_anchored_urbs(&data->tx_anchor);
1099 static void play_deferred(struct btusb_data *data)
1104 while ((urb = usb_get_from_anchor(&data->deferred))) {
1105 err = usb_submit_urb(urb, GFP_ATOMIC);
1109 data->tx_in_flight++;
1111 usb_scuttle_anchored_urbs(&data->deferred);
1114 static int btusb_resume(struct usb_interface *intf)
1116 struct btusb_data *data = usb_get_intfdata(intf);
1117 struct hci_dev *hdev = data->hdev;
1120 BT_DBG("intf %p", intf);
1122 if (--data->suspend_count)
1125 if (!test_bit(HCI_RUNNING, &hdev->flags))
1128 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1129 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1131 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1136 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1137 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1139 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1143 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1146 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1147 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1148 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1150 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1153 spin_lock_irq(&data->txlock);
1154 play_deferred(data);
1155 clear_bit(BTUSB_SUSPENDING, &data->flags);
1156 spin_unlock_irq(&data->txlock);
1157 schedule_work(&data->work);
1162 usb_scuttle_anchored_urbs(&data->deferred);
1164 spin_lock_irq(&data->txlock);
1165 clear_bit(BTUSB_SUSPENDING, &data->flags);
1166 spin_unlock_irq(&data->txlock);
1172 static struct usb_driver btusb_driver = {
1174 .probe = btusb_probe,
1175 .disconnect = btusb_disconnect,
1177 .suspend = btusb_suspend,
1178 .resume = btusb_resume,
1180 .id_table = btusb_table,
1181 .supports_autosuspend = 1,
1184 static int __init btusb_init(void)
1186 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1188 return usb_register(&btusb_driver);
1191 static void __exit btusb_exit(void)
1193 usb_deregister(&btusb_driver);
1196 module_init(btusb_init);
1197 module_exit(btusb_exit);
1199 module_param(ignore_dga, bool, 0644);
1200 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1202 module_param(ignore_csr, bool, 0644);
1203 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1205 module_param(ignore_sniffer, bool, 0644);
1206 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1208 module_param(disable_scofix, bool, 0644);
1209 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1211 module_param(force_scofix, bool, 0644);
1212 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1214 module_param(reset, bool, 0644);
1215 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1217 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1218 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1219 MODULE_VERSION(VERSION);
1220 MODULE_LICENSE("GPL");