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
57 #define BTUSB_ATH3012 0x80
59 static struct usb_device_id btusb_table[] = {
60 /* Generic Bluetooth USB device */
61 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
63 /* Broadcom SoftSailing reporting vendor specific */
64 { USB_DEVICE(0x0a5c, 0x21e1) },
66 /* Apple MacBookPro 7,1 */
67 { USB_DEVICE(0x05ac, 0x8213) },
70 { USB_DEVICE(0x05ac, 0x8215) },
72 /* Apple MacBookPro6,2 */
73 { USB_DEVICE(0x05ac, 0x8218) },
75 /* Apple MacBookAir3,1, MacBookAir3,2 */
76 { USB_DEVICE(0x05ac, 0x821b) },
78 /* Apple MacBookAir4,1 */
79 { USB_DEVICE(0x05ac, 0x821f) },
81 /* Apple MacBookPro8,2 */
82 { USB_DEVICE(0x05ac, 0x821a) },
84 /* Apple MacMini5,1 */
85 { USB_DEVICE(0x05ac, 0x8281) },
87 /* AVM BlueFRITZ! USB v2.0 */
88 { USB_DEVICE(0x057c, 0x3800) },
90 /* Bluetooth Ultraport Module from IBM */
91 { USB_DEVICE(0x04bf, 0x030a) },
93 /* ALPS Modules with non-standard id */
94 { USB_DEVICE(0x044e, 0x3001) },
95 { USB_DEVICE(0x044e, 0x3002) },
97 /* Ericsson with non-standard id */
98 { USB_DEVICE(0x0bdb, 0x1002) },
100 /* Canyon CN-BTU1 with HID interfaces */
101 { USB_DEVICE(0x0c10, 0x0000) },
103 /* Broadcom BCM20702A0 */
104 { USB_DEVICE(0x0489, 0xe042) },
105 { USB_DEVICE(0x0a5c, 0x21e3) },
106 { USB_DEVICE(0x0a5c, 0x21e6) },
107 { USB_DEVICE(0x0a5c, 0x21e8) },
108 { USB_DEVICE(0x0a5c, 0x21f3) },
109 { USB_DEVICE(0x413c, 0x8197) },
111 /* Foxconn - Hon Hai */
112 { USB_DEVICE(0x0489, 0xe033) },
114 { } /* Terminating entry */
117 MODULE_DEVICE_TABLE(usb, btusb_table);
119 static struct usb_device_id blacklist_table[] = {
120 /* CSR BlueCore devices */
121 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
123 /* Broadcom BCM2033 without firmware */
124 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
126 /* Atheros 3011 with sflash firmware */
127 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
128 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
129 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
130 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
132 /* Atheros AR9285 Malbec with sflash firmware */
133 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
135 /* Atheros 3012 with sflash firmware */
136 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
137 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
138 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
139 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
140 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
141 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
143 /* Atheros AR5BBU12 with sflash firmware */
144 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
146 /* Broadcom BCM2035 */
147 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
148 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
149 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
151 /* Broadcom BCM2045 */
152 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
153 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
155 /* IBM/Lenovo ThinkPad with Broadcom chip */
156 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
157 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
159 /* HP laptop with Broadcom chip */
160 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
162 /* Dell laptop with Broadcom chip */
163 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
165 /* Dell Wireless 370 and 410 devices */
166 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
167 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
169 /* Belkin F8T012 and F8T013 devices */
170 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
171 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
173 /* Asus WL-BTD202 device */
174 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
176 /* Kensington Bluetooth USB adapter */
177 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
179 /* RTX Telecom based adapters with buggy SCO support */
180 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
181 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
183 /* CONWISE Technology based adapters with buggy SCO support */
184 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
186 /* Digianswer devices */
187 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
188 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
190 /* CSR BlueCore Bluetooth Sniffer */
191 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
193 /* Frontline ComProbe Bluetooth Sniffer */
194 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
196 { } /* Terminating entry */
199 #define BTUSB_MAX_ISOC_FRAMES 10
201 #define BTUSB_INTR_RUNNING 0
202 #define BTUSB_BULK_RUNNING 1
203 #define BTUSB_ISOC_RUNNING 2
204 #define BTUSB_SUSPENDING 3
205 #define BTUSB_DID_ISO_RESUME 4
208 struct hci_dev *hdev;
209 struct usb_device *udev;
210 struct usb_interface *intf;
211 struct usb_interface *isoc;
217 struct work_struct work;
218 struct work_struct waker;
220 struct usb_anchor tx_anchor;
221 struct usb_anchor intr_anchor;
222 struct usb_anchor bulk_anchor;
223 struct usb_anchor isoc_anchor;
224 struct usb_anchor deferred;
228 struct usb_endpoint_descriptor *intr_ep;
229 struct usb_endpoint_descriptor *bulk_tx_ep;
230 struct usb_endpoint_descriptor *bulk_rx_ep;
231 struct usb_endpoint_descriptor *isoc_tx_ep;
232 struct usb_endpoint_descriptor *isoc_rx_ep;
236 unsigned int sco_num;
241 static int inc_tx(struct btusb_data *data)
246 spin_lock_irqsave(&data->txlock, flags);
247 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
249 data->tx_in_flight++;
250 spin_unlock_irqrestore(&data->txlock, flags);
255 static void btusb_intr_complete(struct urb *urb)
257 struct hci_dev *hdev = urb->context;
258 struct btusb_data *data = hdev->driver_data;
261 BT_DBG("%s urb %p status %d count %d", hdev->name,
262 urb, urb->status, urb->actual_length);
264 if (!test_bit(HCI_RUNNING, &hdev->flags))
267 if (urb->status == 0) {
268 hdev->stat.byte_rx += urb->actual_length;
270 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
271 urb->transfer_buffer,
272 urb->actual_length) < 0) {
273 BT_ERR("%s corrupted event packet", hdev->name);
278 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
281 usb_mark_last_busy(data->udev);
282 usb_anchor_urb(urb, &data->intr_anchor);
284 err = usb_submit_urb(urb, GFP_ATOMIC);
286 /* -EPERM: urb is being killed;
287 * -ENODEV: device got disconnected */
288 if (err != -EPERM && err != -ENODEV)
289 BT_ERR("%s urb %p failed to resubmit (%d)",
290 hdev->name, urb, -err);
291 usb_unanchor_urb(urb);
295 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
297 struct btusb_data *data = hdev->driver_data;
303 BT_DBG("%s", hdev->name);
308 urb = usb_alloc_urb(0, mem_flags);
312 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
314 buf = kmalloc(size, mem_flags);
320 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
322 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
323 btusb_intr_complete, hdev,
324 data->intr_ep->bInterval);
326 urb->transfer_flags |= URB_FREE_BUFFER;
328 usb_anchor_urb(urb, &data->intr_anchor);
330 err = usb_submit_urb(urb, mem_flags);
332 BT_ERR("%s urb %p submission failed (%d)",
333 hdev->name, urb, -err);
334 usb_unanchor_urb(urb);
342 static void btusb_bulk_complete(struct urb *urb)
344 struct hci_dev *hdev = urb->context;
345 struct btusb_data *data = hdev->driver_data;
348 BT_DBG("%s urb %p status %d count %d", hdev->name,
349 urb, urb->status, urb->actual_length);
351 if (!test_bit(HCI_RUNNING, &hdev->flags))
354 if (urb->status == 0) {
355 hdev->stat.byte_rx += urb->actual_length;
357 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
358 urb->transfer_buffer,
359 urb->actual_length) < 0) {
360 BT_ERR("%s corrupted ACL packet", hdev->name);
365 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
368 usb_anchor_urb(urb, &data->bulk_anchor);
369 usb_mark_last_busy(data->udev);
371 err = usb_submit_urb(urb, GFP_ATOMIC);
373 /* -EPERM: urb is being killed;
374 * -ENODEV: device got disconnected */
375 if (err != -EPERM && err != -ENODEV)
376 BT_ERR("%s urb %p failed to resubmit (%d)",
377 hdev->name, urb, -err);
378 usb_unanchor_urb(urb);
382 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
384 struct btusb_data *data = hdev->driver_data;
388 int err, size = HCI_MAX_FRAME_SIZE;
390 BT_DBG("%s", hdev->name);
392 if (!data->bulk_rx_ep)
395 urb = usb_alloc_urb(0, mem_flags);
399 buf = kmalloc(size, mem_flags);
405 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
407 usb_fill_bulk_urb(urb, data->udev, pipe,
408 buf, size, btusb_bulk_complete, hdev);
410 urb->transfer_flags |= URB_FREE_BUFFER;
412 usb_mark_last_busy(data->udev);
413 usb_anchor_urb(urb, &data->bulk_anchor);
415 err = usb_submit_urb(urb, mem_flags);
417 BT_ERR("%s urb %p submission failed (%d)",
418 hdev->name, urb, -err);
419 usb_unanchor_urb(urb);
427 static void btusb_isoc_complete(struct urb *urb)
429 struct hci_dev *hdev = urb->context;
430 struct btusb_data *data = hdev->driver_data;
433 BT_DBG("%s urb %p status %d count %d", hdev->name,
434 urb, urb->status, urb->actual_length);
436 if (!test_bit(HCI_RUNNING, &hdev->flags))
439 if (urb->status == 0) {
440 for (i = 0; i < urb->number_of_packets; i++) {
441 unsigned int offset = urb->iso_frame_desc[i].offset;
442 unsigned int length = urb->iso_frame_desc[i].actual_length;
444 if (urb->iso_frame_desc[i].status)
447 hdev->stat.byte_rx += length;
449 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
450 urb->transfer_buffer + offset,
452 BT_ERR("%s corrupted SCO packet", hdev->name);
458 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
461 usb_anchor_urb(urb, &data->isoc_anchor);
463 err = usb_submit_urb(urb, GFP_ATOMIC);
465 /* -EPERM: urb is being killed;
466 * -ENODEV: device got disconnected */
467 if (err != -EPERM && err != -ENODEV)
468 BT_ERR("%s urb %p failed to resubmit (%d)",
469 hdev->name, urb, -err);
470 usb_unanchor_urb(urb);
474 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
478 BT_DBG("len %d mtu %d", len, mtu);
480 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
481 i++, offset += mtu, len -= mtu) {
482 urb->iso_frame_desc[i].offset = offset;
483 urb->iso_frame_desc[i].length = mtu;
486 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
487 urb->iso_frame_desc[i].offset = offset;
488 urb->iso_frame_desc[i].length = len;
492 urb->number_of_packets = i;
495 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
497 struct btusb_data *data = hdev->driver_data;
503 BT_DBG("%s", hdev->name);
505 if (!data->isoc_rx_ep)
508 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
512 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
513 BTUSB_MAX_ISOC_FRAMES;
515 buf = kmalloc(size, mem_flags);
521 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
523 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
524 hdev, data->isoc_rx_ep->bInterval);
526 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
528 __fill_isoc_descriptor(urb, size,
529 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
531 usb_anchor_urb(urb, &data->isoc_anchor);
533 err = usb_submit_urb(urb, mem_flags);
535 BT_ERR("%s urb %p submission failed (%d)",
536 hdev->name, urb, -err);
537 usb_unanchor_urb(urb);
545 static void btusb_tx_complete(struct urb *urb)
547 struct sk_buff *skb = urb->context;
548 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
549 struct btusb_data *data = hdev->driver_data;
551 BT_DBG("%s urb %p status %d count %d", hdev->name,
552 urb, urb->status, urb->actual_length);
554 if (!test_bit(HCI_RUNNING, &hdev->flags))
558 hdev->stat.byte_tx += urb->transfer_buffer_length;
563 spin_lock(&data->txlock);
564 data->tx_in_flight--;
565 spin_unlock(&data->txlock);
567 kfree(urb->setup_packet);
572 static void btusb_isoc_tx_complete(struct urb *urb)
574 struct sk_buff *skb = urb->context;
575 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
577 BT_DBG("%s urb %p status %d count %d", hdev->name,
578 urb, urb->status, urb->actual_length);
580 if (!test_bit(HCI_RUNNING, &hdev->flags))
584 hdev->stat.byte_tx += urb->transfer_buffer_length;
589 kfree(urb->setup_packet);
594 static int btusb_open(struct hci_dev *hdev)
596 struct btusb_data *data = hdev->driver_data;
599 BT_DBG("%s", hdev->name);
601 err = usb_autopm_get_interface(data->intf);
605 data->intf->needs_remote_wakeup = 1;
607 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
610 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
613 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
617 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
619 usb_kill_anchored_urbs(&data->intr_anchor);
623 set_bit(BTUSB_BULK_RUNNING, &data->flags);
624 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
627 usb_autopm_put_interface(data->intf);
631 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
632 clear_bit(HCI_RUNNING, &hdev->flags);
633 usb_autopm_put_interface(data->intf);
637 static void btusb_stop_traffic(struct btusb_data *data)
639 usb_kill_anchored_urbs(&data->intr_anchor);
640 usb_kill_anchored_urbs(&data->bulk_anchor);
641 usb_kill_anchored_urbs(&data->isoc_anchor);
644 static int btusb_close(struct hci_dev *hdev)
646 struct btusb_data *data = hdev->driver_data;
649 BT_DBG("%s", hdev->name);
651 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
654 cancel_work_sync(&data->work);
655 cancel_work_sync(&data->waker);
657 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
658 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
659 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
661 btusb_stop_traffic(data);
662 err = usb_autopm_get_interface(data->intf);
666 data->intf->needs_remote_wakeup = 0;
667 usb_autopm_put_interface(data->intf);
670 usb_scuttle_anchored_urbs(&data->deferred);
674 static int btusb_flush(struct hci_dev *hdev)
676 struct btusb_data *data = hdev->driver_data;
678 BT_DBG("%s", hdev->name);
680 usb_kill_anchored_urbs(&data->tx_anchor);
685 static int btusb_send_frame(struct sk_buff *skb)
687 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
688 struct btusb_data *data = hdev->driver_data;
689 struct usb_ctrlrequest *dr;
694 BT_DBG("%s", hdev->name);
696 if (!test_bit(HCI_RUNNING, &hdev->flags))
699 switch (bt_cb(skb)->pkt_type) {
700 case HCI_COMMAND_PKT:
701 urb = usb_alloc_urb(0, GFP_ATOMIC);
705 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
711 dr->bRequestType = data->cmdreq_type;
715 dr->wLength = __cpu_to_le16(skb->len);
717 pipe = usb_sndctrlpipe(data->udev, 0x00);
719 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
720 skb->data, skb->len, btusb_tx_complete, skb);
725 case HCI_ACLDATA_PKT:
726 if (!data->bulk_tx_ep)
729 urb = usb_alloc_urb(0, GFP_ATOMIC);
733 pipe = usb_sndbulkpipe(data->udev,
734 data->bulk_tx_ep->bEndpointAddress);
736 usb_fill_bulk_urb(urb, data->udev, pipe,
737 skb->data, skb->len, btusb_tx_complete, skb);
742 case HCI_SCODATA_PKT:
743 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
746 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
750 pipe = usb_sndisocpipe(data->udev,
751 data->isoc_tx_ep->bEndpointAddress);
753 usb_fill_int_urb(urb, data->udev, pipe,
754 skb->data, skb->len, btusb_isoc_tx_complete,
755 skb, data->isoc_tx_ep->bInterval);
757 urb->transfer_flags = URB_ISO_ASAP;
759 __fill_isoc_descriptor(urb, skb->len,
760 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
771 usb_anchor_urb(urb, &data->deferred);
772 schedule_work(&data->waker);
778 usb_anchor_urb(urb, &data->tx_anchor);
780 err = usb_submit_urb(urb, GFP_ATOMIC);
782 BT_ERR("%s urb %p submission failed", hdev->name, urb);
783 kfree(urb->setup_packet);
784 usb_unanchor_urb(urb);
786 usb_mark_last_busy(data->udev);
794 static void btusb_destruct(struct hci_dev *hdev)
796 struct btusb_data *data = hdev->driver_data;
798 BT_DBG("%s", hdev->name);
803 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
805 struct btusb_data *data = hdev->driver_data;
807 BT_DBG("%s evt %d", hdev->name, evt);
809 if (hdev->conn_hash.sco_num != data->sco_num) {
810 data->sco_num = hdev->conn_hash.sco_num;
811 schedule_work(&data->work);
815 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
817 struct btusb_data *data = hdev->driver_data;
818 struct usb_interface *intf = data->isoc;
819 struct usb_endpoint_descriptor *ep_desc;
825 err = usb_set_interface(data->udev, 1, altsetting);
827 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
831 data->isoc_altsetting = altsetting;
833 data->isoc_tx_ep = NULL;
834 data->isoc_rx_ep = NULL;
836 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
837 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
839 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
840 data->isoc_tx_ep = ep_desc;
844 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
845 data->isoc_rx_ep = ep_desc;
850 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
851 BT_ERR("%s invalid SCO descriptors", hdev->name);
858 static void btusb_work(struct work_struct *work)
860 struct btusb_data *data = container_of(work, struct btusb_data, work);
861 struct hci_dev *hdev = data->hdev;
864 if (hdev->conn_hash.sco_num > 0) {
865 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
866 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
868 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
869 usb_kill_anchored_urbs(&data->isoc_anchor);
873 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
875 if (data->isoc_altsetting != 2) {
876 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
877 usb_kill_anchored_urbs(&data->isoc_anchor);
879 if (__set_isoc_interface(hdev, 2) < 0)
883 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
884 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
885 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
887 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
890 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
891 usb_kill_anchored_urbs(&data->isoc_anchor);
893 __set_isoc_interface(hdev, 0);
894 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
895 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
899 static void btusb_waker(struct work_struct *work)
901 struct btusb_data *data = container_of(work, struct btusb_data, waker);
904 err = usb_autopm_get_interface(data->intf);
908 usb_autopm_put_interface(data->intf);
911 static int btusb_probe(struct usb_interface *intf,
912 const struct usb_device_id *id)
914 struct usb_endpoint_descriptor *ep_desc;
915 struct btusb_data *data;
916 struct hci_dev *hdev;
919 BT_DBG("intf %p id %p", intf, id);
921 /* interface numbers are hardcoded in the spec */
922 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
925 if (!id->driver_info) {
926 const struct usb_device_id *match;
927 match = usb_match_id(intf, blacklist_table);
932 if (id->driver_info == BTUSB_IGNORE)
935 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
938 if (ignore_csr && id->driver_info & BTUSB_CSR)
941 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
944 if (id->driver_info & BTUSB_ATH3012) {
945 struct usb_device *udev = interface_to_usbdev(intf);
947 /* Old firmware would otherwise let ath3k driver load
948 * patch and sysconfig files */
949 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
953 data = kzalloc(sizeof(*data), GFP_KERNEL);
957 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
958 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
960 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
961 data->intr_ep = ep_desc;
965 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
966 data->bulk_tx_ep = ep_desc;
970 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
971 data->bulk_rx_ep = ep_desc;
976 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
981 data->cmdreq_type = USB_TYPE_CLASS;
983 data->udev = interface_to_usbdev(intf);
986 spin_lock_init(&data->lock);
988 INIT_WORK(&data->work, btusb_work);
989 INIT_WORK(&data->waker, btusb_waker);
990 spin_lock_init(&data->txlock);
992 init_usb_anchor(&data->tx_anchor);
993 init_usb_anchor(&data->intr_anchor);
994 init_usb_anchor(&data->bulk_anchor);
995 init_usb_anchor(&data->isoc_anchor);
996 init_usb_anchor(&data->deferred);
998 hdev = hci_alloc_dev();
1004 hdev->bus = HCI_USB;
1005 hdev->driver_data = data;
1009 SET_HCIDEV_DEV(hdev, &intf->dev);
1011 hdev->open = btusb_open;
1012 hdev->close = btusb_close;
1013 hdev->flush = btusb_flush;
1014 hdev->send = btusb_send_frame;
1015 hdev->destruct = btusb_destruct;
1016 hdev->notify = btusb_notify;
1018 hdev->owner = THIS_MODULE;
1020 /* Interface numbers are hardcoded in the specification */
1021 data->isoc = usb_ifnum_to_if(data->udev, 1);
1024 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1026 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1027 if (!disable_scofix)
1028 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1031 if (id->driver_info & BTUSB_BROKEN_ISOC)
1034 if (id->driver_info & BTUSB_DIGIANSWER) {
1035 data->cmdreq_type = USB_TYPE_VENDOR;
1036 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1039 if (id->driver_info & BTUSB_CSR) {
1040 struct usb_device *udev = data->udev;
1042 /* Old firmware would otherwise execute USB reset */
1043 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1044 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1047 if (id->driver_info & BTUSB_SNIFFER) {
1048 struct usb_device *udev = data->udev;
1050 /* New sniffer firmware has crippled HCI interface */
1051 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1052 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1057 if (id->driver_info & BTUSB_BCM92035) {
1058 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1059 struct sk_buff *skb;
1061 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1063 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1064 skb_queue_tail(&hdev->driver_init, skb);
1069 err = usb_driver_claim_interface(&btusb_driver,
1078 err = hci_register_dev(hdev);
1085 usb_set_intfdata(intf, data);
1090 static void btusb_disconnect(struct usb_interface *intf)
1092 struct btusb_data *data = usb_get_intfdata(intf);
1093 struct hci_dev *hdev;
1095 BT_DBG("intf %p", intf);
1102 __hci_dev_hold(hdev);
1104 usb_set_intfdata(data->intf, NULL);
1107 usb_set_intfdata(data->isoc, NULL);
1109 hci_unregister_dev(hdev);
1111 if (intf == data->isoc)
1112 usb_driver_release_interface(&btusb_driver, data->intf);
1113 else if (data->isoc)
1114 usb_driver_release_interface(&btusb_driver, data->isoc);
1116 __hci_dev_put(hdev);
1122 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1124 struct btusb_data *data = usb_get_intfdata(intf);
1126 BT_DBG("intf %p", intf);
1128 if (data->suspend_count++)
1131 spin_lock_irq(&data->txlock);
1132 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1133 set_bit(BTUSB_SUSPENDING, &data->flags);
1134 spin_unlock_irq(&data->txlock);
1136 spin_unlock_irq(&data->txlock);
1137 data->suspend_count--;
1141 cancel_work_sync(&data->work);
1143 btusb_stop_traffic(data);
1144 usb_kill_anchored_urbs(&data->tx_anchor);
1149 static void play_deferred(struct btusb_data *data)
1154 while ((urb = usb_get_from_anchor(&data->deferred))) {
1155 err = usb_submit_urb(urb, GFP_ATOMIC);
1159 data->tx_in_flight++;
1161 usb_scuttle_anchored_urbs(&data->deferred);
1164 static int btusb_resume(struct usb_interface *intf)
1166 struct btusb_data *data = usb_get_intfdata(intf);
1167 struct hci_dev *hdev = data->hdev;
1170 BT_DBG("intf %p", intf);
1172 if (--data->suspend_count)
1175 if (!test_bit(HCI_RUNNING, &hdev->flags))
1178 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1179 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1181 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1186 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1187 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1189 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1193 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1196 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1197 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1198 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1200 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1203 spin_lock_irq(&data->txlock);
1204 play_deferred(data);
1205 clear_bit(BTUSB_SUSPENDING, &data->flags);
1206 spin_unlock_irq(&data->txlock);
1207 schedule_work(&data->work);
1212 usb_scuttle_anchored_urbs(&data->deferred);
1214 spin_lock_irq(&data->txlock);
1215 clear_bit(BTUSB_SUSPENDING, &data->flags);
1216 spin_unlock_irq(&data->txlock);
1222 static struct usb_driver btusb_driver = {
1224 .probe = btusb_probe,
1225 .disconnect = btusb_disconnect,
1227 .suspend = btusb_suspend,
1228 .resume = btusb_resume,
1230 .id_table = btusb_table,
1231 .supports_autosuspend = 1,
1234 static int __init btusb_init(void)
1236 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1238 return usb_register(&btusb_driver);
1241 static void __exit btusb_exit(void)
1243 usb_deregister(&btusb_driver);
1246 module_init(btusb_init);
1247 module_exit(btusb_exit);
1249 module_param(ignore_dga, bool, 0644);
1250 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1252 module_param(ignore_csr, bool, 0644);
1253 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1255 module_param(ignore_sniffer, bool, 0644);
1256 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1258 module_param(disable_scofix, bool, 0644);
1259 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1261 module_param(force_scofix, bool, 0644);
1262 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1264 module_param(reset, bool, 0644);
1265 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1267 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1268 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1269 MODULE_VERSION(VERSION);
1270 MODULE_LICENSE("GPL");