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);
243 BT_ERR("%s urb %p failed to resubmit (%d)",
244 hdev->name, urb, -err);
245 usb_unanchor_urb(urb);
249 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
251 struct btusb_data *data = hdev->driver_data;
257 BT_DBG("%s", hdev->name);
262 urb = usb_alloc_urb(0, mem_flags);
266 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
268 buf = kmalloc(size, mem_flags);
274 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
276 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
277 btusb_intr_complete, hdev,
278 data->intr_ep->bInterval);
280 urb->transfer_flags |= URB_FREE_BUFFER;
282 usb_anchor_urb(urb, &data->intr_anchor);
284 err = usb_submit_urb(urb, mem_flags);
286 BT_ERR("%s urb %p submission failed (%d)",
287 hdev->name, urb, -err);
288 usb_unanchor_urb(urb);
296 static void btusb_bulk_complete(struct urb *urb)
298 struct hci_dev *hdev = urb->context;
299 struct btusb_data *data = hdev->driver_data;
302 BT_DBG("%s urb %p status %d count %d", hdev->name,
303 urb, urb->status, urb->actual_length);
305 if (!test_bit(HCI_RUNNING, &hdev->flags))
308 if (urb->status == 0) {
309 hdev->stat.byte_rx += urb->actual_length;
311 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
312 urb->transfer_buffer,
313 urb->actual_length) < 0) {
314 BT_ERR("%s corrupted ACL packet", hdev->name);
319 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
322 usb_anchor_urb(urb, &data->bulk_anchor);
323 usb_mark_last_busy(data->udev);
325 err = usb_submit_urb(urb, GFP_ATOMIC);
328 BT_ERR("%s urb %p failed to resubmit (%d)",
329 hdev->name, urb, -err);
330 usb_unanchor_urb(urb);
334 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
336 struct btusb_data *data = hdev->driver_data;
340 int err, size = HCI_MAX_FRAME_SIZE;
342 BT_DBG("%s", hdev->name);
344 if (!data->bulk_rx_ep)
347 urb = usb_alloc_urb(0, mem_flags);
351 buf = kmalloc(size, mem_flags);
357 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
359 usb_fill_bulk_urb(urb, data->udev, pipe,
360 buf, size, btusb_bulk_complete, hdev);
362 urb->transfer_flags |= URB_FREE_BUFFER;
364 usb_mark_last_busy(data->udev);
365 usb_anchor_urb(urb, &data->bulk_anchor);
367 err = usb_submit_urb(urb, mem_flags);
369 BT_ERR("%s urb %p submission failed (%d)",
370 hdev->name, urb, -err);
371 usb_unanchor_urb(urb);
379 static void btusb_isoc_complete(struct urb *urb)
381 struct hci_dev *hdev = urb->context;
382 struct btusb_data *data = hdev->driver_data;
385 BT_DBG("%s urb %p status %d count %d", hdev->name,
386 urb, urb->status, urb->actual_length);
388 if (!test_bit(HCI_RUNNING, &hdev->flags))
391 if (urb->status == 0) {
392 for (i = 0; i < urb->number_of_packets; i++) {
393 unsigned int offset = urb->iso_frame_desc[i].offset;
394 unsigned int length = urb->iso_frame_desc[i].actual_length;
396 if (urb->iso_frame_desc[i].status)
399 hdev->stat.byte_rx += length;
401 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
402 urb->transfer_buffer + offset,
404 BT_ERR("%s corrupted SCO packet", hdev->name);
410 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
413 usb_anchor_urb(urb, &data->isoc_anchor);
415 err = usb_submit_urb(urb, GFP_ATOMIC);
418 BT_ERR("%s urb %p failed to resubmit (%d)",
419 hdev->name, urb, -err);
420 usb_unanchor_urb(urb);
424 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
428 BT_DBG("len %d mtu %d", len, mtu);
430 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
431 i++, offset += mtu, len -= mtu) {
432 urb->iso_frame_desc[i].offset = offset;
433 urb->iso_frame_desc[i].length = mtu;
436 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
437 urb->iso_frame_desc[i].offset = offset;
438 urb->iso_frame_desc[i].length = len;
442 urb->number_of_packets = i;
445 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
447 struct btusb_data *data = hdev->driver_data;
453 BT_DBG("%s", hdev->name);
455 if (!data->isoc_rx_ep)
458 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
462 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
463 BTUSB_MAX_ISOC_FRAMES;
465 buf = kmalloc(size, mem_flags);
471 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
473 urb->dev = data->udev;
476 urb->complete = btusb_isoc_complete;
477 urb->interval = data->isoc_rx_ep->bInterval;
479 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
480 urb->transfer_buffer = buf;
481 urb->transfer_buffer_length = size;
483 __fill_isoc_descriptor(urb, size,
484 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
486 usb_anchor_urb(urb, &data->isoc_anchor);
488 err = usb_submit_urb(urb, mem_flags);
490 BT_ERR("%s urb %p submission failed (%d)",
491 hdev->name, urb, -err);
492 usb_unanchor_urb(urb);
500 static void btusb_tx_complete(struct urb *urb)
502 struct sk_buff *skb = urb->context;
503 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
504 struct btusb_data *data = hdev->driver_data;
506 BT_DBG("%s urb %p status %d count %d", hdev->name,
507 urb, urb->status, urb->actual_length);
509 if (!test_bit(HCI_RUNNING, &hdev->flags))
513 hdev->stat.byte_tx += urb->transfer_buffer_length;
518 spin_lock(&data->txlock);
519 data->tx_in_flight--;
520 spin_unlock(&data->txlock);
522 kfree(urb->setup_packet);
527 static void btusb_isoc_tx_complete(struct urb *urb)
529 struct sk_buff *skb = urb->context;
530 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
532 BT_DBG("%s urb %p status %d count %d", hdev->name,
533 urb, urb->status, urb->actual_length);
535 if (!test_bit(HCI_RUNNING, &hdev->flags))
539 hdev->stat.byte_tx += urb->transfer_buffer_length;
544 kfree(urb->setup_packet);
549 static int btusb_open(struct hci_dev *hdev)
551 struct btusb_data *data = hdev->driver_data;
554 BT_DBG("%s", hdev->name);
556 err = usb_autopm_get_interface(data->intf);
560 data->intf->needs_remote_wakeup = 1;
562 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
565 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
568 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
572 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
574 usb_kill_anchored_urbs(&data->intr_anchor);
578 set_bit(BTUSB_BULK_RUNNING, &data->flags);
579 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
582 usb_autopm_put_interface(data->intf);
586 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
587 clear_bit(HCI_RUNNING, &hdev->flags);
588 usb_autopm_put_interface(data->intf);
592 static void btusb_stop_traffic(struct btusb_data *data)
594 usb_kill_anchored_urbs(&data->intr_anchor);
595 usb_kill_anchored_urbs(&data->bulk_anchor);
596 usb_kill_anchored_urbs(&data->isoc_anchor);
599 static int btusb_close(struct hci_dev *hdev)
601 struct btusb_data *data = hdev->driver_data;
604 BT_DBG("%s", hdev->name);
606 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
609 cancel_work_sync(&data->work);
610 cancel_work_sync(&data->waker);
612 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
613 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
614 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
616 btusb_stop_traffic(data);
617 err = usb_autopm_get_interface(data->intf);
621 data->intf->needs_remote_wakeup = 0;
622 usb_autopm_put_interface(data->intf);
625 usb_scuttle_anchored_urbs(&data->deferred);
629 static int btusb_flush(struct hci_dev *hdev)
631 struct btusb_data *data = hdev->driver_data;
633 BT_DBG("%s", hdev->name);
635 usb_kill_anchored_urbs(&data->tx_anchor);
640 static int btusb_send_frame(struct sk_buff *skb)
642 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
643 struct btusb_data *data = hdev->driver_data;
644 struct usb_ctrlrequest *dr;
649 BT_DBG("%s", hdev->name);
651 if (!test_bit(HCI_RUNNING, &hdev->flags))
654 switch (bt_cb(skb)->pkt_type) {
655 case HCI_COMMAND_PKT:
656 urb = usb_alloc_urb(0, GFP_ATOMIC);
660 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
666 dr->bRequestType = data->cmdreq_type;
670 dr->wLength = __cpu_to_le16(skb->len);
672 pipe = usb_sndctrlpipe(data->udev, 0x00);
674 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
675 skb->data, skb->len, btusb_tx_complete, skb);
680 case HCI_ACLDATA_PKT:
681 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
684 urb = usb_alloc_urb(0, GFP_ATOMIC);
688 pipe = usb_sndbulkpipe(data->udev,
689 data->bulk_tx_ep->bEndpointAddress);
691 usb_fill_bulk_urb(urb, data->udev, pipe,
692 skb->data, skb->len, btusb_tx_complete, skb);
697 case HCI_SCODATA_PKT:
698 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
701 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
705 pipe = usb_sndisocpipe(data->udev,
706 data->isoc_tx_ep->bEndpointAddress);
708 urb->dev = data->udev;
711 urb->complete = btusb_isoc_tx_complete;
712 urb->interval = data->isoc_tx_ep->bInterval;
714 urb->transfer_flags = URB_ISO_ASAP;
715 urb->transfer_buffer = skb->data;
716 urb->transfer_buffer_length = skb->len;
718 __fill_isoc_descriptor(urb, skb->len,
719 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
730 usb_anchor_urb(urb, &data->deferred);
731 schedule_work(&data->waker);
737 usb_anchor_urb(urb, &data->tx_anchor);
739 err = usb_submit_urb(urb, GFP_ATOMIC);
741 BT_ERR("%s urb %p submission failed", hdev->name, urb);
742 kfree(urb->setup_packet);
743 usb_unanchor_urb(urb);
745 usb_mark_last_busy(data->udev);
754 static void btusb_destruct(struct hci_dev *hdev)
756 struct btusb_data *data = hdev->driver_data;
758 BT_DBG("%s", hdev->name);
763 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
765 struct btusb_data *data = hdev->driver_data;
767 BT_DBG("%s evt %d", hdev->name, evt);
769 if (hdev->conn_hash.sco_num != data->sco_num) {
770 data->sco_num = hdev->conn_hash.sco_num;
771 schedule_work(&data->work);
775 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
777 struct btusb_data *data = hdev->driver_data;
778 struct usb_interface *intf = data->isoc;
779 struct usb_endpoint_descriptor *ep_desc;
785 err = usb_set_interface(data->udev, 1, altsetting);
787 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
791 data->isoc_altsetting = altsetting;
793 data->isoc_tx_ep = NULL;
794 data->isoc_rx_ep = NULL;
796 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
797 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
799 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
800 data->isoc_tx_ep = ep_desc;
804 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
805 data->isoc_rx_ep = ep_desc;
810 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
811 BT_ERR("%s invalid SCO descriptors", hdev->name);
818 static void btusb_work(struct work_struct *work)
820 struct btusb_data *data = container_of(work, struct btusb_data, work);
821 struct hci_dev *hdev = data->hdev;
824 if (hdev->conn_hash.sco_num > 0) {
825 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
826 err = usb_autopm_get_interface(data->isoc);
828 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
829 usb_kill_anchored_urbs(&data->isoc_anchor);
833 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
835 if (data->isoc_altsetting != 2) {
836 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
837 usb_kill_anchored_urbs(&data->isoc_anchor);
839 if (__set_isoc_interface(hdev, 2) < 0)
843 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
844 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
845 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
847 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
850 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
851 usb_kill_anchored_urbs(&data->isoc_anchor);
853 __set_isoc_interface(hdev, 0);
854 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
855 usb_autopm_put_interface(data->isoc);
859 static void btusb_waker(struct work_struct *work)
861 struct btusb_data *data = container_of(work, struct btusb_data, waker);
864 err = usb_autopm_get_interface(data->intf);
868 usb_autopm_put_interface(data->intf);
871 static int btusb_probe(struct usb_interface *intf,
872 const struct usb_device_id *id)
874 struct usb_endpoint_descriptor *ep_desc;
875 struct btusb_data *data;
876 struct hci_dev *hdev;
879 BT_DBG("intf %p id %p", intf, id);
881 /* interface numbers are hardcoded in the spec */
882 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
885 if (!id->driver_info) {
886 const struct usb_device_id *match;
887 match = usb_match_id(intf, blacklist_table);
892 if (id->driver_info == BTUSB_IGNORE)
895 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
898 if (ignore_csr && id->driver_info & BTUSB_CSR)
901 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
904 data = kzalloc(sizeof(*data), GFP_KERNEL);
908 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
909 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
911 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
912 data->intr_ep = ep_desc;
916 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
917 data->bulk_tx_ep = ep_desc;
921 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
922 data->bulk_rx_ep = ep_desc;
927 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
932 data->cmdreq_type = USB_TYPE_CLASS;
934 data->udev = interface_to_usbdev(intf);
937 spin_lock_init(&data->lock);
939 INIT_WORK(&data->work, btusb_work);
940 INIT_WORK(&data->waker, btusb_waker);
941 spin_lock_init(&data->txlock);
943 init_usb_anchor(&data->tx_anchor);
944 init_usb_anchor(&data->intr_anchor);
945 init_usb_anchor(&data->bulk_anchor);
946 init_usb_anchor(&data->isoc_anchor);
947 init_usb_anchor(&data->deferred);
949 hdev = hci_alloc_dev();
956 hdev->driver_data = data;
960 SET_HCIDEV_DEV(hdev, &intf->dev);
962 hdev->open = btusb_open;
963 hdev->close = btusb_close;
964 hdev->flush = btusb_flush;
965 hdev->send = btusb_send_frame;
966 hdev->destruct = btusb_destruct;
967 hdev->notify = btusb_notify;
969 hdev->owner = THIS_MODULE;
971 /* Interface numbers are hardcoded in the specification */
972 data->isoc = usb_ifnum_to_if(data->udev, 1);
975 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
977 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
979 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
982 if (id->driver_info & BTUSB_BROKEN_ISOC)
985 if (id->driver_info & BTUSB_DIGIANSWER) {
986 data->cmdreq_type = USB_TYPE_VENDOR;
987 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
990 if (id->driver_info & BTUSB_CSR) {
991 struct usb_device *udev = data->udev;
993 /* Old firmware would otherwise execute USB reset */
994 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
995 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
998 if (id->driver_info & BTUSB_SNIFFER) {
999 struct usb_device *udev = data->udev;
1001 /* New sniffer firmware has crippled HCI interface */
1002 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1003 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1008 if (id->driver_info & BTUSB_BCM92035) {
1009 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1010 struct sk_buff *skb;
1012 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1014 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1015 skb_queue_tail(&hdev->driver_init, skb);
1020 err = usb_driver_claim_interface(&btusb_driver,
1029 err = hci_register_dev(hdev);
1036 usb_set_intfdata(intf, data);
1038 usb_enable_autosuspend(interface_to_usbdev(intf));
1043 static void btusb_disconnect(struct usb_interface *intf)
1045 struct btusb_data *data = usb_get_intfdata(intf);
1046 struct hci_dev *hdev;
1048 BT_DBG("intf %p", intf);
1055 __hci_dev_hold(hdev);
1057 usb_set_intfdata(data->intf, NULL);
1060 usb_set_intfdata(data->isoc, NULL);
1062 hci_unregister_dev(hdev);
1064 if (intf == data->isoc)
1065 usb_driver_release_interface(&btusb_driver, data->intf);
1066 else if (data->isoc)
1067 usb_driver_release_interface(&btusb_driver, data->isoc);
1069 __hci_dev_put(hdev);
1075 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1077 struct btusb_data *data = usb_get_intfdata(intf);
1079 BT_DBG("intf %p", intf);
1081 if (data->suspend_count++)
1084 spin_lock_irq(&data->txlock);
1085 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1086 set_bit(BTUSB_SUSPENDING, &data->flags);
1087 spin_unlock_irq(&data->txlock);
1089 spin_unlock_irq(&data->txlock);
1090 data->suspend_count--;
1094 cancel_work_sync(&data->work);
1096 btusb_stop_traffic(data);
1097 usb_kill_anchored_urbs(&data->tx_anchor);
1102 static void play_deferred(struct btusb_data *data)
1107 while ((urb = usb_get_from_anchor(&data->deferred))) {
1108 err = usb_submit_urb(urb, GFP_ATOMIC);
1112 data->tx_in_flight++;
1114 usb_scuttle_anchored_urbs(&data->deferred);
1117 static int btusb_resume(struct usb_interface *intf)
1119 struct btusb_data *data = usb_get_intfdata(intf);
1120 struct hci_dev *hdev = data->hdev;
1123 BT_DBG("intf %p", intf);
1125 if (--data->suspend_count)
1128 if (!test_bit(HCI_RUNNING, &hdev->flags))
1131 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1132 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1134 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1139 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1140 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1142 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1146 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1149 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1150 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1151 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1153 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1156 spin_lock_irq(&data->txlock);
1157 play_deferred(data);
1158 clear_bit(BTUSB_SUSPENDING, &data->flags);
1159 spin_unlock_irq(&data->txlock);
1160 schedule_work(&data->work);
1165 usb_scuttle_anchored_urbs(&data->deferred);
1167 spin_lock_irq(&data->txlock);
1168 clear_bit(BTUSB_SUSPENDING, &data->flags);
1169 spin_unlock_irq(&data->txlock);
1175 static struct usb_driver btusb_driver = {
1177 .probe = btusb_probe,
1178 .disconnect = btusb_disconnect,
1180 .suspend = btusb_suspend,
1181 .resume = btusb_resume,
1183 .id_table = btusb_table,
1184 .supports_autosuspend = 1,
1187 static int __init btusb_init(void)
1189 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1191 return usb_register(&btusb_driver);
1194 static void __exit btusb_exit(void)
1196 usb_deregister(&btusb_driver);
1199 module_init(btusb_init);
1200 module_exit(btusb_exit);
1202 module_param(ignore_dga, bool, 0644);
1203 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1205 module_param(ignore_csr, bool, 0644);
1206 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1208 module_param(ignore_sniffer, bool, 0644);
1209 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1211 module_param(disable_scofix, bool, 0644);
1212 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1214 module_param(force_scofix, bool, 0644);
1215 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1217 module_param(reset, bool, 0644);
1218 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1220 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1221 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1222 MODULE_VERSION(VERSION);
1223 MODULE_LICENSE("GPL");