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 },
141 /* Atheros AR5BBU12 with sflash firmware */
142 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
144 /* Broadcom BCM2035 */
145 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
146 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
147 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
149 /* Broadcom BCM2045 */
150 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
151 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
153 /* IBM/Lenovo ThinkPad with Broadcom chip */
154 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
155 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
157 /* HP laptop with Broadcom chip */
158 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
160 /* Dell laptop with Broadcom chip */
161 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
163 /* Dell Wireless 370 and 410 devices */
164 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
165 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
167 /* Belkin F8T012 and F8T013 devices */
168 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
169 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
171 /* Asus WL-BTD202 device */
172 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
174 /* Kensington Bluetooth USB adapter */
175 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
177 /* RTX Telecom based adapters with buggy SCO support */
178 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
179 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
181 /* CONWISE Technology based adapters with buggy SCO support */
182 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
184 /* Digianswer devices */
185 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
186 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
188 /* CSR BlueCore Bluetooth Sniffer */
189 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
191 /* Frontline ComProbe Bluetooth Sniffer */
192 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
194 { } /* Terminating entry */
197 #define BTUSB_MAX_ISOC_FRAMES 10
199 #define BTUSB_INTR_RUNNING 0
200 #define BTUSB_BULK_RUNNING 1
201 #define BTUSB_ISOC_RUNNING 2
202 #define BTUSB_SUSPENDING 3
203 #define BTUSB_DID_ISO_RESUME 4
206 struct hci_dev *hdev;
207 struct usb_device *udev;
208 struct usb_interface *intf;
209 struct usb_interface *isoc;
215 struct work_struct work;
216 struct work_struct waker;
218 struct usb_anchor tx_anchor;
219 struct usb_anchor intr_anchor;
220 struct usb_anchor bulk_anchor;
221 struct usb_anchor isoc_anchor;
222 struct usb_anchor deferred;
226 struct usb_endpoint_descriptor *intr_ep;
227 struct usb_endpoint_descriptor *bulk_tx_ep;
228 struct usb_endpoint_descriptor *bulk_rx_ep;
229 struct usb_endpoint_descriptor *isoc_tx_ep;
230 struct usb_endpoint_descriptor *isoc_rx_ep;
234 unsigned int sco_num;
239 static int inc_tx(struct btusb_data *data)
244 spin_lock_irqsave(&data->txlock, flags);
245 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
247 data->tx_in_flight++;
248 spin_unlock_irqrestore(&data->txlock, flags);
253 static void btusb_intr_complete(struct urb *urb)
255 struct hci_dev *hdev = urb->context;
256 struct btusb_data *data = hdev->driver_data;
259 BT_DBG("%s urb %p status %d count %d", hdev->name,
260 urb, urb->status, urb->actual_length);
262 if (!test_bit(HCI_RUNNING, &hdev->flags))
265 if (urb->status == 0) {
266 hdev->stat.byte_rx += urb->actual_length;
268 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
269 urb->transfer_buffer,
270 urb->actual_length) < 0) {
271 BT_ERR("%s corrupted event packet", hdev->name);
276 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
279 usb_mark_last_busy(data->udev);
280 usb_anchor_urb(urb, &data->intr_anchor);
282 err = usb_submit_urb(urb, GFP_ATOMIC);
285 BT_ERR("%s urb %p failed to resubmit (%d)",
286 hdev->name, urb, -err);
287 usb_unanchor_urb(urb);
291 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
293 struct btusb_data *data = hdev->driver_data;
299 BT_DBG("%s", hdev->name);
304 urb = usb_alloc_urb(0, mem_flags);
308 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
310 buf = kmalloc(size, mem_flags);
316 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
318 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
319 btusb_intr_complete, hdev,
320 data->intr_ep->bInterval);
322 urb->transfer_flags |= URB_FREE_BUFFER;
324 usb_anchor_urb(urb, &data->intr_anchor);
326 err = usb_submit_urb(urb, mem_flags);
328 BT_ERR("%s urb %p submission failed (%d)",
329 hdev->name, urb, -err);
330 usb_unanchor_urb(urb);
338 static void btusb_bulk_complete(struct urb *urb)
340 struct hci_dev *hdev = urb->context;
341 struct btusb_data *data = hdev->driver_data;
344 BT_DBG("%s urb %p status %d count %d", hdev->name,
345 urb, urb->status, urb->actual_length);
347 if (!test_bit(HCI_RUNNING, &hdev->flags))
350 if (urb->status == 0) {
351 hdev->stat.byte_rx += urb->actual_length;
353 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
354 urb->transfer_buffer,
355 urb->actual_length) < 0) {
356 BT_ERR("%s corrupted ACL packet", hdev->name);
361 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
364 usb_anchor_urb(urb, &data->bulk_anchor);
365 usb_mark_last_busy(data->udev);
367 err = usb_submit_urb(urb, GFP_ATOMIC);
370 BT_ERR("%s urb %p failed to resubmit (%d)",
371 hdev->name, urb, -err);
372 usb_unanchor_urb(urb);
376 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
378 struct btusb_data *data = hdev->driver_data;
382 int err, size = HCI_MAX_FRAME_SIZE;
384 BT_DBG("%s", hdev->name);
386 if (!data->bulk_rx_ep)
389 urb = usb_alloc_urb(0, mem_flags);
393 buf = kmalloc(size, mem_flags);
399 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
401 usb_fill_bulk_urb(urb, data->udev, pipe,
402 buf, size, btusb_bulk_complete, hdev);
404 urb->transfer_flags |= URB_FREE_BUFFER;
406 usb_mark_last_busy(data->udev);
407 usb_anchor_urb(urb, &data->bulk_anchor);
409 err = usb_submit_urb(urb, mem_flags);
411 BT_ERR("%s urb %p submission failed (%d)",
412 hdev->name, urb, -err);
413 usb_unanchor_urb(urb);
421 static void btusb_isoc_complete(struct urb *urb)
423 struct hci_dev *hdev = urb->context;
424 struct btusb_data *data = hdev->driver_data;
427 BT_DBG("%s urb %p status %d count %d", hdev->name,
428 urb, urb->status, urb->actual_length);
430 if (!test_bit(HCI_RUNNING, &hdev->flags))
433 if (urb->status == 0) {
434 for (i = 0; i < urb->number_of_packets; i++) {
435 unsigned int offset = urb->iso_frame_desc[i].offset;
436 unsigned int length = urb->iso_frame_desc[i].actual_length;
438 if (urb->iso_frame_desc[i].status)
441 hdev->stat.byte_rx += length;
443 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
444 urb->transfer_buffer + offset,
446 BT_ERR("%s corrupted SCO packet", hdev->name);
452 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
455 usb_anchor_urb(urb, &data->isoc_anchor);
457 err = usb_submit_urb(urb, GFP_ATOMIC);
460 BT_ERR("%s urb %p failed to resubmit (%d)",
461 hdev->name, urb, -err);
462 usb_unanchor_urb(urb);
466 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
470 BT_DBG("len %d mtu %d", len, mtu);
472 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
473 i++, offset += mtu, len -= mtu) {
474 urb->iso_frame_desc[i].offset = offset;
475 urb->iso_frame_desc[i].length = mtu;
478 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
479 urb->iso_frame_desc[i].offset = offset;
480 urb->iso_frame_desc[i].length = len;
484 urb->number_of_packets = i;
487 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
489 struct btusb_data *data = hdev->driver_data;
495 BT_DBG("%s", hdev->name);
497 if (!data->isoc_rx_ep)
500 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
504 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
505 BTUSB_MAX_ISOC_FRAMES;
507 buf = kmalloc(size, mem_flags);
513 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
515 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
516 hdev, data->isoc_rx_ep->bInterval);
518 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
520 __fill_isoc_descriptor(urb, size,
521 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
523 usb_anchor_urb(urb, &data->isoc_anchor);
525 err = usb_submit_urb(urb, mem_flags);
527 BT_ERR("%s urb %p submission failed (%d)",
528 hdev->name, urb, -err);
529 usb_unanchor_urb(urb);
537 static void btusb_tx_complete(struct urb *urb)
539 struct sk_buff *skb = urb->context;
540 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
541 struct btusb_data *data = hdev->driver_data;
543 BT_DBG("%s urb %p status %d count %d", hdev->name,
544 urb, urb->status, urb->actual_length);
546 if (!test_bit(HCI_RUNNING, &hdev->flags))
550 hdev->stat.byte_tx += urb->transfer_buffer_length;
555 spin_lock(&data->txlock);
556 data->tx_in_flight--;
557 spin_unlock(&data->txlock);
559 kfree(urb->setup_packet);
564 static void btusb_isoc_tx_complete(struct urb *urb)
566 struct sk_buff *skb = urb->context;
567 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
569 BT_DBG("%s urb %p status %d count %d", hdev->name,
570 urb, urb->status, urb->actual_length);
572 if (!test_bit(HCI_RUNNING, &hdev->flags))
576 hdev->stat.byte_tx += urb->transfer_buffer_length;
581 kfree(urb->setup_packet);
586 static int btusb_open(struct hci_dev *hdev)
588 struct btusb_data *data = hdev->driver_data;
591 BT_DBG("%s", hdev->name);
593 err = usb_autopm_get_interface(data->intf);
597 data->intf->needs_remote_wakeup = 1;
599 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
602 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
605 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
609 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
611 usb_kill_anchored_urbs(&data->intr_anchor);
615 set_bit(BTUSB_BULK_RUNNING, &data->flags);
616 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
619 usb_autopm_put_interface(data->intf);
623 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
624 clear_bit(HCI_RUNNING, &hdev->flags);
625 usb_autopm_put_interface(data->intf);
629 static void btusb_stop_traffic(struct btusb_data *data)
631 usb_kill_anchored_urbs(&data->intr_anchor);
632 usb_kill_anchored_urbs(&data->bulk_anchor);
633 usb_kill_anchored_urbs(&data->isoc_anchor);
636 static int btusb_close(struct hci_dev *hdev)
638 struct btusb_data *data = hdev->driver_data;
641 BT_DBG("%s", hdev->name);
643 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
646 cancel_work_sync(&data->work);
647 cancel_work_sync(&data->waker);
649 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
650 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
651 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
653 btusb_stop_traffic(data);
654 err = usb_autopm_get_interface(data->intf);
658 data->intf->needs_remote_wakeup = 0;
659 usb_autopm_put_interface(data->intf);
662 usb_scuttle_anchored_urbs(&data->deferred);
666 static int btusb_flush(struct hci_dev *hdev)
668 struct btusb_data *data = hdev->driver_data;
670 BT_DBG("%s", hdev->name);
672 usb_kill_anchored_urbs(&data->tx_anchor);
677 static int btusb_send_frame(struct sk_buff *skb)
679 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
680 struct btusb_data *data = hdev->driver_data;
681 struct usb_ctrlrequest *dr;
686 BT_DBG("%s", hdev->name);
688 if (!test_bit(HCI_RUNNING, &hdev->flags))
691 switch (bt_cb(skb)->pkt_type) {
692 case HCI_COMMAND_PKT:
693 urb = usb_alloc_urb(0, GFP_ATOMIC);
697 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
703 dr->bRequestType = data->cmdreq_type;
707 dr->wLength = __cpu_to_le16(skb->len);
709 pipe = usb_sndctrlpipe(data->udev, 0x00);
711 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
712 skb->data, skb->len, btusb_tx_complete, skb);
717 case HCI_ACLDATA_PKT:
718 if (!data->bulk_tx_ep || (hdev->conn_hash.acl_num < 1 &&
719 hdev->conn_hash.le_num < 1))
722 urb = usb_alloc_urb(0, GFP_ATOMIC);
726 pipe = usb_sndbulkpipe(data->udev,
727 data->bulk_tx_ep->bEndpointAddress);
729 usb_fill_bulk_urb(urb, data->udev, pipe,
730 skb->data, skb->len, btusb_tx_complete, skb);
735 case HCI_SCODATA_PKT:
736 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
739 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
743 pipe = usb_sndisocpipe(data->udev,
744 data->isoc_tx_ep->bEndpointAddress);
746 usb_fill_int_urb(urb, data->udev, pipe,
747 skb->data, skb->len, btusb_isoc_tx_complete,
748 skb, data->isoc_tx_ep->bInterval);
750 urb->transfer_flags = URB_ISO_ASAP;
752 __fill_isoc_descriptor(urb, skb->len,
753 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
764 usb_anchor_urb(urb, &data->deferred);
765 schedule_work(&data->waker);
771 usb_anchor_urb(urb, &data->tx_anchor);
773 err = usb_submit_urb(urb, GFP_ATOMIC);
775 BT_ERR("%s urb %p submission failed", hdev->name, urb);
776 kfree(urb->setup_packet);
777 usb_unanchor_urb(urb);
779 usb_mark_last_busy(data->udev);
788 static void btusb_destruct(struct hci_dev *hdev)
790 struct btusb_data *data = hdev->driver_data;
792 BT_DBG("%s", hdev->name);
797 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
799 struct btusb_data *data = hdev->driver_data;
801 BT_DBG("%s evt %d", hdev->name, evt);
803 if (hdev->conn_hash.sco_num != data->sco_num) {
804 data->sco_num = hdev->conn_hash.sco_num;
805 schedule_work(&data->work);
809 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
811 struct btusb_data *data = hdev->driver_data;
812 struct usb_interface *intf = data->isoc;
813 struct usb_endpoint_descriptor *ep_desc;
819 err = usb_set_interface(data->udev, 1, altsetting);
821 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
825 data->isoc_altsetting = altsetting;
827 data->isoc_tx_ep = NULL;
828 data->isoc_rx_ep = NULL;
830 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
831 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
833 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
834 data->isoc_tx_ep = ep_desc;
838 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
839 data->isoc_rx_ep = ep_desc;
844 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
845 BT_ERR("%s invalid SCO descriptors", hdev->name);
852 static void btusb_work(struct work_struct *work)
854 struct btusb_data *data = container_of(work, struct btusb_data, work);
855 struct hci_dev *hdev = data->hdev;
858 if (hdev->conn_hash.sco_num > 0) {
859 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
860 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
862 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
863 usb_kill_anchored_urbs(&data->isoc_anchor);
867 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
869 if (data->isoc_altsetting != 2) {
870 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
871 usb_kill_anchored_urbs(&data->isoc_anchor);
873 if (__set_isoc_interface(hdev, 2) < 0)
877 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
878 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
879 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
881 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
884 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
885 usb_kill_anchored_urbs(&data->isoc_anchor);
887 __set_isoc_interface(hdev, 0);
888 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
889 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
893 static void btusb_waker(struct work_struct *work)
895 struct btusb_data *data = container_of(work, struct btusb_data, waker);
898 err = usb_autopm_get_interface(data->intf);
902 usb_autopm_put_interface(data->intf);
905 static int btusb_probe(struct usb_interface *intf,
906 const struct usb_device_id *id)
908 struct usb_endpoint_descriptor *ep_desc;
909 struct btusb_data *data;
910 struct hci_dev *hdev;
913 BT_DBG("intf %p id %p", intf, id);
915 /* interface numbers are hardcoded in the spec */
916 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
919 if (!id->driver_info) {
920 const struct usb_device_id *match;
921 match = usb_match_id(intf, blacklist_table);
926 if (id->driver_info == BTUSB_IGNORE)
929 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
932 if (ignore_csr && id->driver_info & BTUSB_CSR)
935 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
938 if (id->driver_info & BTUSB_ATH3012) {
939 struct usb_device *udev = interface_to_usbdev(intf);
941 /* Old firmware would otherwise let ath3k driver load
942 * patch and sysconfig files */
943 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
947 data = kzalloc(sizeof(*data), GFP_KERNEL);
951 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
952 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
954 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
955 data->intr_ep = ep_desc;
959 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
960 data->bulk_tx_ep = ep_desc;
964 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
965 data->bulk_rx_ep = ep_desc;
970 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
975 data->cmdreq_type = USB_TYPE_CLASS;
977 data->udev = interface_to_usbdev(intf);
980 spin_lock_init(&data->lock);
982 INIT_WORK(&data->work, btusb_work);
983 INIT_WORK(&data->waker, btusb_waker);
984 spin_lock_init(&data->txlock);
986 init_usb_anchor(&data->tx_anchor);
987 init_usb_anchor(&data->intr_anchor);
988 init_usb_anchor(&data->bulk_anchor);
989 init_usb_anchor(&data->isoc_anchor);
990 init_usb_anchor(&data->deferred);
992 hdev = hci_alloc_dev();
999 hdev->driver_data = data;
1003 SET_HCIDEV_DEV(hdev, &intf->dev);
1005 hdev->open = btusb_open;
1006 hdev->close = btusb_close;
1007 hdev->flush = btusb_flush;
1008 hdev->send = btusb_send_frame;
1009 hdev->destruct = btusb_destruct;
1010 hdev->notify = btusb_notify;
1012 hdev->owner = THIS_MODULE;
1014 /* Interface numbers are hardcoded in the specification */
1015 data->isoc = usb_ifnum_to_if(data->udev, 1);
1018 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1020 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1021 if (!disable_scofix)
1022 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1025 if (id->driver_info & BTUSB_BROKEN_ISOC)
1028 if (id->driver_info & BTUSB_DIGIANSWER) {
1029 data->cmdreq_type = USB_TYPE_VENDOR;
1030 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1033 if (id->driver_info & BTUSB_CSR) {
1034 struct usb_device *udev = data->udev;
1036 /* Old firmware would otherwise execute USB reset */
1037 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1038 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1041 if (id->driver_info & BTUSB_SNIFFER) {
1042 struct usb_device *udev = data->udev;
1044 /* New sniffer firmware has crippled HCI interface */
1045 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1046 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1051 if (id->driver_info & BTUSB_BCM92035) {
1052 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1053 struct sk_buff *skb;
1055 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1057 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1058 skb_queue_tail(&hdev->driver_init, skb);
1063 err = usb_driver_claim_interface(&btusb_driver,
1072 err = hci_register_dev(hdev);
1079 usb_set_intfdata(intf, data);
1084 static void btusb_disconnect(struct usb_interface *intf)
1086 struct btusb_data *data = usb_get_intfdata(intf);
1087 struct hci_dev *hdev;
1089 BT_DBG("intf %p", intf);
1096 __hci_dev_hold(hdev);
1098 usb_set_intfdata(data->intf, NULL);
1101 usb_set_intfdata(data->isoc, NULL);
1103 hci_unregister_dev(hdev);
1105 if (intf == data->isoc)
1106 usb_driver_release_interface(&btusb_driver, data->intf);
1107 else if (data->isoc)
1108 usb_driver_release_interface(&btusb_driver, data->isoc);
1110 __hci_dev_put(hdev);
1116 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1118 struct btusb_data *data = usb_get_intfdata(intf);
1120 BT_DBG("intf %p", intf);
1122 if (data->suspend_count++)
1125 spin_lock_irq(&data->txlock);
1126 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1127 set_bit(BTUSB_SUSPENDING, &data->flags);
1128 spin_unlock_irq(&data->txlock);
1130 spin_unlock_irq(&data->txlock);
1131 data->suspend_count--;
1135 cancel_work_sync(&data->work);
1137 btusb_stop_traffic(data);
1138 usb_kill_anchored_urbs(&data->tx_anchor);
1143 static void play_deferred(struct btusb_data *data)
1148 while ((urb = usb_get_from_anchor(&data->deferred))) {
1149 err = usb_submit_urb(urb, GFP_ATOMIC);
1153 data->tx_in_flight++;
1155 usb_scuttle_anchored_urbs(&data->deferred);
1158 static int btusb_resume(struct usb_interface *intf)
1160 struct btusb_data *data = usb_get_intfdata(intf);
1161 struct hci_dev *hdev = data->hdev;
1164 BT_DBG("intf %p", intf);
1166 if (--data->suspend_count)
1169 if (!test_bit(HCI_RUNNING, &hdev->flags))
1172 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1173 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1175 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1180 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1181 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1183 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1187 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1190 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1191 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1192 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1194 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1197 spin_lock_irq(&data->txlock);
1198 play_deferred(data);
1199 clear_bit(BTUSB_SUSPENDING, &data->flags);
1200 spin_unlock_irq(&data->txlock);
1201 schedule_work(&data->work);
1206 usb_scuttle_anchored_urbs(&data->deferred);
1208 spin_lock_irq(&data->txlock);
1209 clear_bit(BTUSB_SUSPENDING, &data->flags);
1210 spin_unlock_irq(&data->txlock);
1216 static struct usb_driver btusb_driver = {
1218 .probe = btusb_probe,
1219 .disconnect = btusb_disconnect,
1221 .suspend = btusb_suspend,
1222 .resume = btusb_resume,
1224 .id_table = btusb_table,
1225 .supports_autosuspend = 1,
1228 static int __init btusb_init(void)
1230 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1232 return usb_register(&btusb_driver);
1235 static void __exit btusb_exit(void)
1237 usb_deregister(&btusb_driver);
1240 module_init(btusb_init);
1241 module_exit(btusb_exit);
1243 module_param(ignore_dga, bool, 0644);
1244 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1246 module_param(ignore_csr, bool, 0644);
1247 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1249 module_param(ignore_sniffer, bool, 0644);
1250 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1252 module_param(disable_scofix, bool, 0644);
1253 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1255 module_param(force_scofix, bool, 0644);
1256 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1258 module_param(reset, bool, 0644);
1259 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1261 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1262 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1263 MODULE_VERSION(VERSION);
1264 MODULE_LICENSE("GPL");