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 /* Apple MacBookPro8,2 */
75 { USB_DEVICE(0x05ac, 0x821a) },
77 /* AVM BlueFRITZ! USB v2.0 */
78 { USB_DEVICE(0x057c, 0x3800) },
80 /* Bluetooth Ultraport Module from IBM */
81 { USB_DEVICE(0x04bf, 0x030a) },
83 /* ALPS Modules with non-standard id */
84 { USB_DEVICE(0x044e, 0x3001) },
85 { USB_DEVICE(0x044e, 0x3002) },
87 /* Ericsson with non-standard id */
88 { USB_DEVICE(0x0bdb, 0x1002) },
90 /* Canyon CN-BTU1 with HID interfaces */
91 { USB_DEVICE(0x0c10, 0x0000) },
93 { } /* Terminating entry */
96 MODULE_DEVICE_TABLE(usb, btusb_table);
98 static struct usb_device_id blacklist_table[] = {
99 /* CSR BlueCore devices */
100 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
102 /* Broadcom BCM2033 without firmware */
103 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
105 /* Atheros 3011 with sflash firmware */
106 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
108 /* Atheros AR9285 Malbec with sflash firmware */
109 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
111 /* Atheros 3012 with sflash firmware */
112 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_IGNORE },
114 /* Atheros AR5BBU12 with sflash firmware */
115 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
117 /* Broadcom BCM2035 */
118 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
119 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
120 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
122 /* Broadcom BCM2045 */
123 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
124 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
126 /* IBM/Lenovo ThinkPad with Broadcom chip */
127 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
128 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
130 /* HP laptop with Broadcom chip */
131 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
133 /* Dell laptop with Broadcom chip */
134 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
136 /* Dell Wireless 370 and 410 devices */
137 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
138 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
140 /* Belkin F8T012 and F8T013 devices */
141 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
142 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
144 /* Asus WL-BTD202 device */
145 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
147 /* Kensington Bluetooth USB adapter */
148 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
150 /* RTX Telecom based adapters with buggy SCO support */
151 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
152 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
154 /* CONWISE Technology based adapters with buggy SCO support */
155 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
157 /* Digianswer devices */
158 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
159 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
161 /* CSR BlueCore Bluetooth Sniffer */
162 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
164 /* Frontline ComProbe Bluetooth Sniffer */
165 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
167 { } /* Terminating entry */
170 #define BTUSB_MAX_ISOC_FRAMES 10
172 #define BTUSB_INTR_RUNNING 0
173 #define BTUSB_BULK_RUNNING 1
174 #define BTUSB_ISOC_RUNNING 2
175 #define BTUSB_SUSPENDING 3
176 #define BTUSB_DID_ISO_RESUME 4
179 struct hci_dev *hdev;
180 struct usb_device *udev;
181 struct usb_interface *intf;
182 struct usb_interface *isoc;
188 struct work_struct work;
189 struct work_struct waker;
191 struct usb_anchor tx_anchor;
192 struct usb_anchor intr_anchor;
193 struct usb_anchor bulk_anchor;
194 struct usb_anchor isoc_anchor;
195 struct usb_anchor deferred;
199 struct usb_endpoint_descriptor *intr_ep;
200 struct usb_endpoint_descriptor *bulk_tx_ep;
201 struct usb_endpoint_descriptor *bulk_rx_ep;
202 struct usb_endpoint_descriptor *isoc_tx_ep;
203 struct usb_endpoint_descriptor *isoc_rx_ep;
207 unsigned int sco_num;
212 static int inc_tx(struct btusb_data *data)
217 spin_lock_irqsave(&data->txlock, flags);
218 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
220 data->tx_in_flight++;
221 spin_unlock_irqrestore(&data->txlock, flags);
226 static void btusb_intr_complete(struct urb *urb)
228 struct hci_dev *hdev = urb->context;
229 struct btusb_data *data = hdev->driver_data;
232 BT_DBG("%s urb %p status %d count %d", hdev->name,
233 urb, urb->status, urb->actual_length);
235 if (!test_bit(HCI_RUNNING, &hdev->flags))
238 if (urb->status == 0) {
239 hdev->stat.byte_rx += urb->actual_length;
241 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
242 urb->transfer_buffer,
243 urb->actual_length) < 0) {
244 BT_ERR("%s corrupted event packet", hdev->name);
249 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
252 usb_mark_last_busy(data->udev);
253 usb_anchor_urb(urb, &data->intr_anchor);
255 err = usb_submit_urb(urb, GFP_ATOMIC);
258 BT_ERR("%s urb %p failed to resubmit (%d)",
259 hdev->name, urb, -err);
260 usb_unanchor_urb(urb);
264 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
266 struct btusb_data *data = hdev->driver_data;
272 BT_DBG("%s", hdev->name);
277 urb = usb_alloc_urb(0, mem_flags);
281 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
283 buf = kmalloc(size, mem_flags);
289 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
291 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
292 btusb_intr_complete, hdev,
293 data->intr_ep->bInterval);
295 urb->transfer_flags |= URB_FREE_BUFFER;
297 usb_anchor_urb(urb, &data->intr_anchor);
299 err = usb_submit_urb(urb, mem_flags);
301 BT_ERR("%s urb %p submission failed (%d)",
302 hdev->name, urb, -err);
303 usb_unanchor_urb(urb);
311 static void btusb_bulk_complete(struct urb *urb)
313 struct hci_dev *hdev = urb->context;
314 struct btusb_data *data = hdev->driver_data;
317 BT_DBG("%s urb %p status %d count %d", hdev->name,
318 urb, urb->status, urb->actual_length);
320 if (!test_bit(HCI_RUNNING, &hdev->flags))
323 if (urb->status == 0) {
324 hdev->stat.byte_rx += urb->actual_length;
326 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
327 urb->transfer_buffer,
328 urb->actual_length) < 0) {
329 BT_ERR("%s corrupted ACL packet", hdev->name);
334 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
337 usb_anchor_urb(urb, &data->bulk_anchor);
338 usb_mark_last_busy(data->udev);
340 err = usb_submit_urb(urb, GFP_ATOMIC);
343 BT_ERR("%s urb %p failed to resubmit (%d)",
344 hdev->name, urb, -err);
345 usb_unanchor_urb(urb);
349 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
351 struct btusb_data *data = hdev->driver_data;
355 int err, size = HCI_MAX_FRAME_SIZE;
357 BT_DBG("%s", hdev->name);
359 if (!data->bulk_rx_ep)
362 urb = usb_alloc_urb(0, mem_flags);
366 buf = kmalloc(size, mem_flags);
372 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
374 usb_fill_bulk_urb(urb, data->udev, pipe,
375 buf, size, btusb_bulk_complete, hdev);
377 urb->transfer_flags |= URB_FREE_BUFFER;
379 usb_mark_last_busy(data->udev);
380 usb_anchor_urb(urb, &data->bulk_anchor);
382 err = usb_submit_urb(urb, mem_flags);
384 BT_ERR("%s urb %p submission failed (%d)",
385 hdev->name, urb, -err);
386 usb_unanchor_urb(urb);
394 static void btusb_isoc_complete(struct urb *urb)
396 struct hci_dev *hdev = urb->context;
397 struct btusb_data *data = hdev->driver_data;
400 BT_DBG("%s urb %p status %d count %d", hdev->name,
401 urb, urb->status, urb->actual_length);
403 if (!test_bit(HCI_RUNNING, &hdev->flags))
406 if (urb->status == 0) {
407 for (i = 0; i < urb->number_of_packets; i++) {
408 unsigned int offset = urb->iso_frame_desc[i].offset;
409 unsigned int length = urb->iso_frame_desc[i].actual_length;
411 if (urb->iso_frame_desc[i].status)
414 hdev->stat.byte_rx += length;
416 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
417 urb->transfer_buffer + offset,
419 BT_ERR("%s corrupted SCO packet", hdev->name);
425 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
428 usb_anchor_urb(urb, &data->isoc_anchor);
430 err = usb_submit_urb(urb, GFP_ATOMIC);
433 BT_ERR("%s urb %p failed to resubmit (%d)",
434 hdev->name, urb, -err);
435 usb_unanchor_urb(urb);
439 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
443 BT_DBG("len %d mtu %d", len, mtu);
445 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
446 i++, offset += mtu, len -= mtu) {
447 urb->iso_frame_desc[i].offset = offset;
448 urb->iso_frame_desc[i].length = mtu;
451 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
452 urb->iso_frame_desc[i].offset = offset;
453 urb->iso_frame_desc[i].length = len;
457 urb->number_of_packets = i;
460 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
462 struct btusb_data *data = hdev->driver_data;
468 BT_DBG("%s", hdev->name);
470 if (!data->isoc_rx_ep)
473 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
477 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
478 BTUSB_MAX_ISOC_FRAMES;
480 buf = kmalloc(size, mem_flags);
486 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
488 urb->dev = data->udev;
491 urb->complete = btusb_isoc_complete;
492 urb->interval = data->isoc_rx_ep->bInterval;
494 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
495 urb->transfer_buffer = buf;
496 urb->transfer_buffer_length = size;
498 __fill_isoc_descriptor(urb, size,
499 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
501 usb_anchor_urb(urb, &data->isoc_anchor);
503 err = usb_submit_urb(urb, mem_flags);
505 BT_ERR("%s urb %p submission failed (%d)",
506 hdev->name, urb, -err);
507 usb_unanchor_urb(urb);
515 static void btusb_tx_complete(struct urb *urb)
517 struct sk_buff *skb = urb->context;
518 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
519 struct btusb_data *data = hdev->driver_data;
521 BT_DBG("%s urb %p status %d count %d", hdev->name,
522 urb, urb->status, urb->actual_length);
524 if (!test_bit(HCI_RUNNING, &hdev->flags))
528 hdev->stat.byte_tx += urb->transfer_buffer_length;
533 spin_lock(&data->txlock);
534 data->tx_in_flight--;
535 spin_unlock(&data->txlock);
537 kfree(urb->setup_packet);
542 static void btusb_isoc_tx_complete(struct urb *urb)
544 struct sk_buff *skb = urb->context;
545 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
547 BT_DBG("%s urb %p status %d count %d", hdev->name,
548 urb, urb->status, urb->actual_length);
550 if (!test_bit(HCI_RUNNING, &hdev->flags))
554 hdev->stat.byte_tx += urb->transfer_buffer_length;
559 kfree(urb->setup_packet);
564 static int btusb_open(struct hci_dev *hdev)
566 struct btusb_data *data = hdev->driver_data;
569 BT_DBG("%s", hdev->name);
571 err = usb_autopm_get_interface(data->intf);
575 data->intf->needs_remote_wakeup = 1;
577 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
580 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
583 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
587 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
589 usb_kill_anchored_urbs(&data->intr_anchor);
593 set_bit(BTUSB_BULK_RUNNING, &data->flags);
594 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
597 usb_autopm_put_interface(data->intf);
601 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
602 clear_bit(HCI_RUNNING, &hdev->flags);
603 usb_autopm_put_interface(data->intf);
607 static void btusb_stop_traffic(struct btusb_data *data)
609 usb_kill_anchored_urbs(&data->intr_anchor);
610 usb_kill_anchored_urbs(&data->bulk_anchor);
611 usb_kill_anchored_urbs(&data->isoc_anchor);
614 static int btusb_close(struct hci_dev *hdev)
616 struct btusb_data *data = hdev->driver_data;
619 BT_DBG("%s", hdev->name);
621 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
624 cancel_work_sync(&data->work);
625 cancel_work_sync(&data->waker);
627 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
628 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
629 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
631 btusb_stop_traffic(data);
632 err = usb_autopm_get_interface(data->intf);
636 data->intf->needs_remote_wakeup = 0;
637 usb_autopm_put_interface(data->intf);
640 usb_scuttle_anchored_urbs(&data->deferred);
644 static int btusb_flush(struct hci_dev *hdev)
646 struct btusb_data *data = hdev->driver_data;
648 BT_DBG("%s", hdev->name);
650 usb_kill_anchored_urbs(&data->tx_anchor);
655 static int btusb_send_frame(struct sk_buff *skb)
657 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
658 struct btusb_data *data = hdev->driver_data;
659 struct usb_ctrlrequest *dr;
664 BT_DBG("%s", hdev->name);
666 if (!test_bit(HCI_RUNNING, &hdev->flags))
669 switch (bt_cb(skb)->pkt_type) {
670 case HCI_COMMAND_PKT:
671 urb = usb_alloc_urb(0, GFP_ATOMIC);
675 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
681 dr->bRequestType = data->cmdreq_type;
685 dr->wLength = __cpu_to_le16(skb->len);
687 pipe = usb_sndctrlpipe(data->udev, 0x00);
689 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
690 skb->data, skb->len, btusb_tx_complete, skb);
695 case HCI_ACLDATA_PKT:
696 if (!data->bulk_tx_ep || (hdev->conn_hash.acl_num < 1 &&
697 hdev->conn_hash.le_num < 1))
700 urb = usb_alloc_urb(0, GFP_ATOMIC);
704 pipe = usb_sndbulkpipe(data->udev,
705 data->bulk_tx_ep->bEndpointAddress);
707 usb_fill_bulk_urb(urb, data->udev, pipe,
708 skb->data, skb->len, btusb_tx_complete, skb);
713 case HCI_SCODATA_PKT:
714 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
717 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
721 pipe = usb_sndisocpipe(data->udev,
722 data->isoc_tx_ep->bEndpointAddress);
724 usb_fill_int_urb(urb, data->udev, pipe,
725 skb->data, skb->len, btusb_isoc_tx_complete,
726 skb, data->isoc_tx_ep->bInterval);
728 urb->transfer_flags = URB_ISO_ASAP;
730 __fill_isoc_descriptor(urb, skb->len,
731 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
742 usb_anchor_urb(urb, &data->deferred);
743 schedule_work(&data->waker);
749 usb_anchor_urb(urb, &data->tx_anchor);
751 err = usb_submit_urb(urb, GFP_ATOMIC);
753 BT_ERR("%s urb %p submission failed", hdev->name, urb);
754 kfree(urb->setup_packet);
755 usb_unanchor_urb(urb);
757 usb_mark_last_busy(data->udev);
766 static void btusb_destruct(struct hci_dev *hdev)
768 struct btusb_data *data = hdev->driver_data;
770 BT_DBG("%s", hdev->name);
775 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
777 struct btusb_data *data = hdev->driver_data;
779 BT_DBG("%s evt %d", hdev->name, evt);
781 if (hdev->conn_hash.sco_num != data->sco_num) {
782 data->sco_num = hdev->conn_hash.sco_num;
783 schedule_work(&data->work);
787 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
789 struct btusb_data *data = hdev->driver_data;
790 struct usb_interface *intf = data->isoc;
791 struct usb_endpoint_descriptor *ep_desc;
797 err = usb_set_interface(data->udev, 1, altsetting);
799 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
803 data->isoc_altsetting = altsetting;
805 data->isoc_tx_ep = NULL;
806 data->isoc_rx_ep = NULL;
808 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
809 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
811 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
812 data->isoc_tx_ep = ep_desc;
816 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
817 data->isoc_rx_ep = ep_desc;
822 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
823 BT_ERR("%s invalid SCO descriptors", hdev->name);
830 static void btusb_work(struct work_struct *work)
832 struct btusb_data *data = container_of(work, struct btusb_data, work);
833 struct hci_dev *hdev = data->hdev;
836 if (hdev->conn_hash.sco_num > 0) {
837 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
838 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
840 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
841 usb_kill_anchored_urbs(&data->isoc_anchor);
845 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
847 if (data->isoc_altsetting != 2) {
848 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
849 usb_kill_anchored_urbs(&data->isoc_anchor);
851 if (__set_isoc_interface(hdev, 2) < 0)
855 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
856 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
857 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
859 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
862 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
863 usb_kill_anchored_urbs(&data->isoc_anchor);
865 __set_isoc_interface(hdev, 0);
866 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
867 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
871 static void btusb_waker(struct work_struct *work)
873 struct btusb_data *data = container_of(work, struct btusb_data, waker);
876 err = usb_autopm_get_interface(data->intf);
880 usb_autopm_put_interface(data->intf);
883 static int btusb_probe(struct usb_interface *intf,
884 const struct usb_device_id *id)
886 struct usb_endpoint_descriptor *ep_desc;
887 struct btusb_data *data;
888 struct hci_dev *hdev;
891 BT_DBG("intf %p id %p", intf, id);
893 /* interface numbers are hardcoded in the spec */
894 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
897 if (!id->driver_info) {
898 const struct usb_device_id *match;
899 match = usb_match_id(intf, blacklist_table);
904 if (id->driver_info == BTUSB_IGNORE)
907 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
910 if (ignore_csr && id->driver_info & BTUSB_CSR)
913 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
916 data = kzalloc(sizeof(*data), GFP_KERNEL);
920 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
921 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
923 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
924 data->intr_ep = ep_desc;
928 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
929 data->bulk_tx_ep = ep_desc;
933 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
934 data->bulk_rx_ep = ep_desc;
939 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
944 data->cmdreq_type = USB_TYPE_CLASS;
946 data->udev = interface_to_usbdev(intf);
949 spin_lock_init(&data->lock);
951 INIT_WORK(&data->work, btusb_work);
952 INIT_WORK(&data->waker, btusb_waker);
953 spin_lock_init(&data->txlock);
955 init_usb_anchor(&data->tx_anchor);
956 init_usb_anchor(&data->intr_anchor);
957 init_usb_anchor(&data->bulk_anchor);
958 init_usb_anchor(&data->isoc_anchor);
959 init_usb_anchor(&data->deferred);
961 hdev = hci_alloc_dev();
968 hdev->driver_data = data;
972 SET_HCIDEV_DEV(hdev, &intf->dev);
974 hdev->open = btusb_open;
975 hdev->close = btusb_close;
976 hdev->flush = btusb_flush;
977 hdev->send = btusb_send_frame;
978 hdev->destruct = btusb_destruct;
979 hdev->notify = btusb_notify;
981 hdev->owner = THIS_MODULE;
983 /* Interface numbers are hardcoded in the specification */
984 data->isoc = usb_ifnum_to_if(data->udev, 1);
987 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
989 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
991 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
994 if (id->driver_info & BTUSB_BROKEN_ISOC)
997 if (id->driver_info & BTUSB_DIGIANSWER) {
998 data->cmdreq_type = USB_TYPE_VENDOR;
999 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1002 if (id->driver_info & BTUSB_CSR) {
1003 struct usb_device *udev = data->udev;
1005 /* Old firmware would otherwise execute USB reset */
1006 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1007 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1010 if (id->driver_info & BTUSB_SNIFFER) {
1011 struct usb_device *udev = data->udev;
1013 /* New sniffer firmware has crippled HCI interface */
1014 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1015 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1020 if (id->driver_info & BTUSB_BCM92035) {
1021 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1022 struct sk_buff *skb;
1024 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1026 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1027 skb_queue_tail(&hdev->driver_init, skb);
1032 err = usb_driver_claim_interface(&btusb_driver,
1041 err = hci_register_dev(hdev);
1048 usb_set_intfdata(intf, data);
1053 static void btusb_disconnect(struct usb_interface *intf)
1055 struct btusb_data *data = usb_get_intfdata(intf);
1056 struct hci_dev *hdev;
1058 BT_DBG("intf %p", intf);
1065 __hci_dev_hold(hdev);
1067 usb_set_intfdata(data->intf, NULL);
1070 usb_set_intfdata(data->isoc, NULL);
1072 hci_unregister_dev(hdev);
1074 if (intf == data->isoc)
1075 usb_driver_release_interface(&btusb_driver, data->intf);
1076 else if (data->isoc)
1077 usb_driver_release_interface(&btusb_driver, data->isoc);
1079 __hci_dev_put(hdev);
1085 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1087 struct btusb_data *data = usb_get_intfdata(intf);
1089 BT_DBG("intf %p", intf);
1091 if (data->suspend_count++)
1094 spin_lock_irq(&data->txlock);
1095 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1096 set_bit(BTUSB_SUSPENDING, &data->flags);
1097 spin_unlock_irq(&data->txlock);
1099 spin_unlock_irq(&data->txlock);
1100 data->suspend_count--;
1104 cancel_work_sync(&data->work);
1106 btusb_stop_traffic(data);
1107 usb_kill_anchored_urbs(&data->tx_anchor);
1112 static void play_deferred(struct btusb_data *data)
1117 while ((urb = usb_get_from_anchor(&data->deferred))) {
1118 err = usb_submit_urb(urb, GFP_ATOMIC);
1122 data->tx_in_flight++;
1124 usb_scuttle_anchored_urbs(&data->deferred);
1127 static int btusb_resume(struct usb_interface *intf)
1129 struct btusb_data *data = usb_get_intfdata(intf);
1130 struct hci_dev *hdev = data->hdev;
1133 BT_DBG("intf %p", intf);
1135 if (--data->suspend_count)
1138 if (!test_bit(HCI_RUNNING, &hdev->flags))
1141 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1142 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1144 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1149 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1150 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1152 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1156 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1159 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1160 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1161 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1163 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1166 spin_lock_irq(&data->txlock);
1167 play_deferred(data);
1168 clear_bit(BTUSB_SUSPENDING, &data->flags);
1169 spin_unlock_irq(&data->txlock);
1170 schedule_work(&data->work);
1175 usb_scuttle_anchored_urbs(&data->deferred);
1177 spin_lock_irq(&data->txlock);
1178 clear_bit(BTUSB_SUSPENDING, &data->flags);
1179 spin_unlock_irq(&data->txlock);
1185 static struct usb_driver btusb_driver = {
1187 .probe = btusb_probe,
1188 .disconnect = btusb_disconnect,
1190 .suspend = btusb_suspend,
1191 .resume = btusb_resume,
1193 .id_table = btusb_table,
1194 .supports_autosuspend = 1,
1197 static int __init btusb_init(void)
1199 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1201 return usb_register(&btusb_driver);
1204 static void __exit btusb_exit(void)
1206 usb_deregister(&btusb_driver);
1209 module_init(btusb_init);
1210 module_exit(btusb_exit);
1212 module_param(ignore_dga, bool, 0644);
1213 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1215 module_param(ignore_csr, bool, 0644);
1216 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1218 module_param(ignore_sniffer, bool, 0644);
1219 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1221 module_param(disable_scofix, bool, 0644);
1222 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1224 module_param(force_scofix, bool, 0644);
1225 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1227 module_param(reset, bool, 0644);
1228 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1230 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1231 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1232 MODULE_VERSION(VERSION);
1233 MODULE_LICENSE("GPL");