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 /* Apple-specific (Broadcom) devices */
64 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
66 /* Broadcom SoftSailing reporting vendor specific */
67 { USB_DEVICE(0x0a5c, 0x21e1) },
69 /* Apple MacBookPro 7,1 */
70 { USB_DEVICE(0x05ac, 0x8213) },
73 { USB_DEVICE(0x05ac, 0x8215) },
75 /* Apple MacBookPro6,2 */
76 { USB_DEVICE(0x05ac, 0x8218) },
78 /* Apple MacBookAir3,1, MacBookAir3,2 */
79 { USB_DEVICE(0x05ac, 0x821b) },
81 /* Apple MacBookAir4,1 */
82 { USB_DEVICE(0x05ac, 0x821f) },
84 /* Apple MacBookPro8,2 */
85 { USB_DEVICE(0x05ac, 0x821a) },
87 /* Apple MacMini5,1 */
88 { USB_DEVICE(0x05ac, 0x8281) },
90 /* AVM BlueFRITZ! USB v2.0 */
91 { USB_DEVICE(0x057c, 0x3800) },
93 /* Bluetooth Ultraport Module from IBM */
94 { USB_DEVICE(0x04bf, 0x030a) },
96 /* ALPS Modules with non-standard id */
97 { USB_DEVICE(0x044e, 0x3001) },
98 { USB_DEVICE(0x044e, 0x3002) },
100 /* Ericsson with non-standard id */
101 { USB_DEVICE(0x0bdb, 0x1002) },
103 /* Canyon CN-BTU1 with HID interfaces */
104 { USB_DEVICE(0x0c10, 0x0000) },
106 /* Broadcom BCM20702A0 */
107 { USB_DEVICE(0x0489, 0xe042) },
108 { USB_DEVICE(0x413c, 0x8197) },
110 /* Foxconn - Hon Hai */
111 { USB_DEVICE(0x0489, 0xe033) },
113 /*Broadcom devices with vendor specific id */
114 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
116 { } /* Terminating entry */
119 MODULE_DEVICE_TABLE(usb, btusb_table);
121 static struct usb_device_id blacklist_table[] = {
122 /* CSR BlueCore devices */
123 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
125 /* Broadcom BCM2033 without firmware */
126 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
128 /* Atheros 3011 with sflash firmware */
129 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
130 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
131 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
132 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
133 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
135 /* Atheros AR9285 Malbec with sflash firmware */
136 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
138 /* Atheros 3012 with sflash firmware */
139 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
140 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
141 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
142 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
143 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
144 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
146 /* Atheros AR5BBU12 with sflash firmware */
147 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
149 /* Atheros AR5BBU12 with sflash firmware */
150 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
152 /* Broadcom BCM2035 */
153 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
154 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
155 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
157 /* Broadcom BCM2045 */
158 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
159 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
161 /* IBM/Lenovo ThinkPad with Broadcom chip */
162 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
163 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
165 /* HP laptop with Broadcom chip */
166 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
168 /* Dell laptop with Broadcom chip */
169 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
171 /* Dell Wireless 370 and 410 devices */
172 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
173 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
175 /* Belkin F8T012 and F8T013 devices */
176 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
177 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
179 /* Asus WL-BTD202 device */
180 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
182 /* Kensington Bluetooth USB adapter */
183 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
185 /* RTX Telecom based adapters with buggy SCO support */
186 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
187 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
189 /* CONWISE Technology based adapters with buggy SCO support */
190 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
192 /* Digianswer devices */
193 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
194 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
196 /* CSR BlueCore Bluetooth Sniffer */
197 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
199 /* Frontline ComProbe Bluetooth Sniffer */
200 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
202 { } /* Terminating entry */
205 #define BTUSB_MAX_ISOC_FRAMES 10
207 #define BTUSB_INTR_RUNNING 0
208 #define BTUSB_BULK_RUNNING 1
209 #define BTUSB_ISOC_RUNNING 2
210 #define BTUSB_SUSPENDING 3
211 #define BTUSB_DID_ISO_RESUME 4
214 struct hci_dev *hdev;
215 struct usb_device *udev;
216 struct usb_interface *intf;
217 struct usb_interface *isoc;
223 struct work_struct work;
224 struct work_struct waker;
226 struct usb_anchor tx_anchor;
227 struct usb_anchor intr_anchor;
228 struct usb_anchor bulk_anchor;
229 struct usb_anchor isoc_anchor;
230 struct usb_anchor deferred;
234 struct usb_endpoint_descriptor *intr_ep;
235 struct usb_endpoint_descriptor *bulk_tx_ep;
236 struct usb_endpoint_descriptor *bulk_rx_ep;
237 struct usb_endpoint_descriptor *isoc_tx_ep;
238 struct usb_endpoint_descriptor *isoc_rx_ep;
242 unsigned int sco_num;
247 static int inc_tx(struct btusb_data *data)
252 spin_lock_irqsave(&data->txlock, flags);
253 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
255 data->tx_in_flight++;
256 spin_unlock_irqrestore(&data->txlock, flags);
261 static void btusb_intr_complete(struct urb *urb)
263 struct hci_dev *hdev = urb->context;
264 struct btusb_data *data = hdev->driver_data;
267 BT_DBG("%s urb %p status %d count %d", hdev->name,
268 urb, urb->status, urb->actual_length);
270 if (!test_bit(HCI_RUNNING, &hdev->flags))
273 if (urb->status == 0) {
274 hdev->stat.byte_rx += urb->actual_length;
276 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
277 urb->transfer_buffer,
278 urb->actual_length) < 0) {
279 BT_ERR("%s corrupted event packet", hdev->name);
284 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
287 usb_mark_last_busy(data->udev);
288 usb_anchor_urb(urb, &data->intr_anchor);
290 err = usb_submit_urb(urb, GFP_ATOMIC);
292 /* -EPERM: urb is being killed;
293 * -ENODEV: device got disconnected */
294 if (err != -EPERM && err != -ENODEV)
295 BT_ERR("%s urb %p failed to resubmit (%d)",
296 hdev->name, urb, -err);
297 usb_unanchor_urb(urb);
301 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
303 struct btusb_data *data = hdev->driver_data;
309 BT_DBG("%s", hdev->name);
314 urb = usb_alloc_urb(0, mem_flags);
318 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
320 buf = kmalloc(size, mem_flags);
326 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
328 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
329 btusb_intr_complete, hdev,
330 data->intr_ep->bInterval);
332 urb->transfer_flags |= URB_FREE_BUFFER;
334 usb_anchor_urb(urb, &data->intr_anchor);
336 err = usb_submit_urb(urb, mem_flags);
338 BT_ERR("%s urb %p submission failed (%d)",
339 hdev->name, urb, -err);
340 usb_unanchor_urb(urb);
348 static void btusb_bulk_complete(struct urb *urb)
350 struct hci_dev *hdev = urb->context;
351 struct btusb_data *data = hdev->driver_data;
354 BT_DBG("%s urb %p status %d count %d", hdev->name,
355 urb, urb->status, urb->actual_length);
357 if (!test_bit(HCI_RUNNING, &hdev->flags))
360 if (urb->status == 0) {
361 hdev->stat.byte_rx += urb->actual_length;
363 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
364 urb->transfer_buffer,
365 urb->actual_length) < 0) {
366 BT_ERR("%s corrupted ACL packet", hdev->name);
371 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
374 usb_anchor_urb(urb, &data->bulk_anchor);
375 usb_mark_last_busy(data->udev);
377 err = usb_submit_urb(urb, GFP_ATOMIC);
379 /* -EPERM: urb is being killed;
380 * -ENODEV: device got disconnected */
381 if (err != -EPERM && err != -ENODEV)
382 BT_ERR("%s urb %p failed to resubmit (%d)",
383 hdev->name, urb, -err);
384 usb_unanchor_urb(urb);
388 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
390 struct btusb_data *data = hdev->driver_data;
394 int err, size = HCI_MAX_FRAME_SIZE;
396 BT_DBG("%s", hdev->name);
398 if (!data->bulk_rx_ep)
401 urb = usb_alloc_urb(0, mem_flags);
405 buf = kmalloc(size, mem_flags);
411 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
413 usb_fill_bulk_urb(urb, data->udev, pipe,
414 buf, size, btusb_bulk_complete, hdev);
416 urb->transfer_flags |= URB_FREE_BUFFER;
418 usb_mark_last_busy(data->udev);
419 usb_anchor_urb(urb, &data->bulk_anchor);
421 err = usb_submit_urb(urb, mem_flags);
423 BT_ERR("%s urb %p submission failed (%d)",
424 hdev->name, urb, -err);
425 usb_unanchor_urb(urb);
433 static void btusb_isoc_complete(struct urb *urb)
435 struct hci_dev *hdev = urb->context;
436 struct btusb_data *data = hdev->driver_data;
439 BT_DBG("%s urb %p status %d count %d", hdev->name,
440 urb, urb->status, urb->actual_length);
442 if (!test_bit(HCI_RUNNING, &hdev->flags))
445 if (urb->status == 0) {
446 for (i = 0; i < urb->number_of_packets; i++) {
447 unsigned int offset = urb->iso_frame_desc[i].offset;
448 unsigned int length = urb->iso_frame_desc[i].actual_length;
450 if (urb->iso_frame_desc[i].status)
453 hdev->stat.byte_rx += length;
455 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
456 urb->transfer_buffer + offset,
458 BT_ERR("%s corrupted SCO packet", hdev->name);
464 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
467 usb_anchor_urb(urb, &data->isoc_anchor);
469 err = usb_submit_urb(urb, GFP_ATOMIC);
471 /* -EPERM: urb is being killed;
472 * -ENODEV: device got disconnected */
473 if (err != -EPERM && err != -ENODEV)
474 BT_ERR("%s urb %p failed to resubmit (%d)",
475 hdev->name, urb, -err);
476 usb_unanchor_urb(urb);
480 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
484 BT_DBG("len %d mtu %d", len, mtu);
486 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
487 i++, offset += mtu, len -= mtu) {
488 urb->iso_frame_desc[i].offset = offset;
489 urb->iso_frame_desc[i].length = mtu;
492 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
493 urb->iso_frame_desc[i].offset = offset;
494 urb->iso_frame_desc[i].length = len;
498 urb->number_of_packets = i;
501 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
503 struct btusb_data *data = hdev->driver_data;
509 BT_DBG("%s", hdev->name);
511 if (!data->isoc_rx_ep)
514 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
518 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
519 BTUSB_MAX_ISOC_FRAMES;
521 buf = kmalloc(size, mem_flags);
527 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
529 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
530 hdev, data->isoc_rx_ep->bInterval);
532 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
534 __fill_isoc_descriptor(urb, size,
535 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
537 usb_anchor_urb(urb, &data->isoc_anchor);
539 err = usb_submit_urb(urb, mem_flags);
541 BT_ERR("%s urb %p submission failed (%d)",
542 hdev->name, urb, -err);
543 usb_unanchor_urb(urb);
551 static void btusb_tx_complete(struct urb *urb)
553 struct sk_buff *skb = urb->context;
554 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
555 struct btusb_data *data = hdev->driver_data;
557 BT_DBG("%s urb %p status %d count %d", hdev->name,
558 urb, urb->status, urb->actual_length);
560 if (!test_bit(HCI_RUNNING, &hdev->flags))
564 hdev->stat.byte_tx += urb->transfer_buffer_length;
569 spin_lock(&data->txlock);
570 data->tx_in_flight--;
571 spin_unlock(&data->txlock);
573 kfree(urb->setup_packet);
578 static void btusb_isoc_tx_complete(struct urb *urb)
580 struct sk_buff *skb = urb->context;
581 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
583 BT_DBG("%s urb %p status %d count %d", hdev->name,
584 urb, urb->status, urb->actual_length);
586 if (!test_bit(HCI_RUNNING, &hdev->flags))
590 hdev->stat.byte_tx += urb->transfer_buffer_length;
595 kfree(urb->setup_packet);
600 static int btusb_open(struct hci_dev *hdev)
602 struct btusb_data *data = hdev->driver_data;
605 BT_DBG("%s", hdev->name);
607 err = usb_autopm_get_interface(data->intf);
611 data->intf->needs_remote_wakeup = 1;
613 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
616 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
619 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
623 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
625 usb_kill_anchored_urbs(&data->intr_anchor);
629 set_bit(BTUSB_BULK_RUNNING, &data->flags);
630 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
633 usb_autopm_put_interface(data->intf);
637 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
638 clear_bit(HCI_RUNNING, &hdev->flags);
639 usb_autopm_put_interface(data->intf);
643 static void btusb_stop_traffic(struct btusb_data *data)
645 usb_kill_anchored_urbs(&data->intr_anchor);
646 usb_kill_anchored_urbs(&data->bulk_anchor);
647 usb_kill_anchored_urbs(&data->isoc_anchor);
650 static int btusb_close(struct hci_dev *hdev)
652 struct btusb_data *data = hdev->driver_data;
655 BT_DBG("%s", hdev->name);
657 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
660 cancel_work_sync(&data->work);
661 cancel_work_sync(&data->waker);
663 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
664 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
665 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
667 btusb_stop_traffic(data);
668 err = usb_autopm_get_interface(data->intf);
672 data->intf->needs_remote_wakeup = 0;
673 usb_autopm_put_interface(data->intf);
676 usb_scuttle_anchored_urbs(&data->deferred);
680 static int btusb_flush(struct hci_dev *hdev)
682 struct btusb_data *data = hdev->driver_data;
684 BT_DBG("%s", hdev->name);
686 usb_kill_anchored_urbs(&data->tx_anchor);
691 static int btusb_send_frame(struct sk_buff *skb)
693 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
694 struct btusb_data *data = hdev->driver_data;
695 struct usb_ctrlrequest *dr;
700 BT_DBG("%s", hdev->name);
702 if (!test_bit(HCI_RUNNING, &hdev->flags))
705 switch (bt_cb(skb)->pkt_type) {
706 case HCI_COMMAND_PKT:
707 urb = usb_alloc_urb(0, GFP_ATOMIC);
711 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
717 dr->bRequestType = data->cmdreq_type;
721 dr->wLength = __cpu_to_le16(skb->len);
723 pipe = usb_sndctrlpipe(data->udev, 0x00);
725 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
726 skb->data, skb->len, btusb_tx_complete, skb);
731 case HCI_ACLDATA_PKT:
732 if (!data->bulk_tx_ep)
735 urb = usb_alloc_urb(0, GFP_ATOMIC);
739 pipe = usb_sndbulkpipe(data->udev,
740 data->bulk_tx_ep->bEndpointAddress);
742 usb_fill_bulk_urb(urb, data->udev, pipe,
743 skb->data, skb->len, btusb_tx_complete, skb);
748 case HCI_SCODATA_PKT:
749 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
752 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
756 pipe = usb_sndisocpipe(data->udev,
757 data->isoc_tx_ep->bEndpointAddress);
759 usb_fill_int_urb(urb, data->udev, pipe,
760 skb->data, skb->len, btusb_isoc_tx_complete,
761 skb, data->isoc_tx_ep->bInterval);
763 urb->transfer_flags = URB_ISO_ASAP;
765 __fill_isoc_descriptor(urb, skb->len,
766 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
777 usb_anchor_urb(urb, &data->deferred);
778 schedule_work(&data->waker);
784 usb_anchor_urb(urb, &data->tx_anchor);
786 err = usb_submit_urb(urb, GFP_ATOMIC);
788 BT_ERR("%s urb %p submission failed", hdev->name, urb);
789 kfree(urb->setup_packet);
790 usb_unanchor_urb(urb);
792 usb_mark_last_busy(data->udev);
800 static void btusb_destruct(struct hci_dev *hdev)
802 struct btusb_data *data = hdev->driver_data;
804 BT_DBG("%s", hdev->name);
809 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
811 struct btusb_data *data = hdev->driver_data;
813 BT_DBG("%s evt %d", hdev->name, evt);
815 if (hdev->conn_hash.sco_num != data->sco_num) {
816 data->sco_num = hdev->conn_hash.sco_num;
817 schedule_work(&data->work);
821 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
823 struct btusb_data *data = hdev->driver_data;
824 struct usb_interface *intf = data->isoc;
825 struct usb_endpoint_descriptor *ep_desc;
831 err = usb_set_interface(data->udev, 1, altsetting);
833 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
837 data->isoc_altsetting = altsetting;
839 data->isoc_tx_ep = NULL;
840 data->isoc_rx_ep = NULL;
842 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
843 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
845 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
846 data->isoc_tx_ep = ep_desc;
850 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
851 data->isoc_rx_ep = ep_desc;
856 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
857 BT_ERR("%s invalid SCO descriptors", hdev->name);
864 static void btusb_work(struct work_struct *work)
866 struct btusb_data *data = container_of(work, struct btusb_data, work);
867 struct hci_dev *hdev = data->hdev;
870 if (hdev->conn_hash.sco_num > 0) {
871 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
872 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
874 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
875 usb_kill_anchored_urbs(&data->isoc_anchor);
879 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
881 if (data->isoc_altsetting != 2) {
882 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
883 usb_kill_anchored_urbs(&data->isoc_anchor);
885 if (__set_isoc_interface(hdev, 2) < 0)
889 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
890 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
891 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
893 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
896 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
897 usb_kill_anchored_urbs(&data->isoc_anchor);
899 __set_isoc_interface(hdev, 0);
900 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
901 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
905 static void btusb_waker(struct work_struct *work)
907 struct btusb_data *data = container_of(work, struct btusb_data, waker);
910 err = usb_autopm_get_interface(data->intf);
914 usb_autopm_put_interface(data->intf);
917 static int btusb_probe(struct usb_interface *intf,
918 const struct usb_device_id *id)
920 struct usb_endpoint_descriptor *ep_desc;
921 struct btusb_data *data;
922 struct hci_dev *hdev;
925 BT_DBG("intf %p id %p", intf, id);
927 /* interface numbers are hardcoded in the spec */
928 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
931 if (!id->driver_info) {
932 const struct usb_device_id *match;
933 match = usb_match_id(intf, blacklist_table);
938 if (id->driver_info == BTUSB_IGNORE)
941 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
944 if (ignore_csr && id->driver_info & BTUSB_CSR)
947 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
950 if (id->driver_info & BTUSB_ATH3012) {
951 struct usb_device *udev = interface_to_usbdev(intf);
953 /* Old firmware would otherwise let ath3k driver load
954 * patch and sysconfig files */
955 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
959 data = kzalloc(sizeof(*data), GFP_KERNEL);
963 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
964 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
966 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
967 data->intr_ep = ep_desc;
971 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
972 data->bulk_tx_ep = ep_desc;
976 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
977 data->bulk_rx_ep = ep_desc;
982 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
987 data->cmdreq_type = USB_TYPE_CLASS;
989 data->udev = interface_to_usbdev(intf);
992 spin_lock_init(&data->lock);
994 INIT_WORK(&data->work, btusb_work);
995 INIT_WORK(&data->waker, btusb_waker);
996 spin_lock_init(&data->txlock);
998 init_usb_anchor(&data->tx_anchor);
999 init_usb_anchor(&data->intr_anchor);
1000 init_usb_anchor(&data->bulk_anchor);
1001 init_usb_anchor(&data->isoc_anchor);
1002 init_usb_anchor(&data->deferred);
1004 hdev = hci_alloc_dev();
1010 hdev->bus = HCI_USB;
1011 hdev->driver_data = data;
1015 SET_HCIDEV_DEV(hdev, &intf->dev);
1017 hdev->open = btusb_open;
1018 hdev->close = btusb_close;
1019 hdev->flush = btusb_flush;
1020 hdev->send = btusb_send_frame;
1021 hdev->destruct = btusb_destruct;
1022 hdev->notify = btusb_notify;
1024 hdev->owner = THIS_MODULE;
1026 /* Interface numbers are hardcoded in the specification */
1027 data->isoc = usb_ifnum_to_if(data->udev, 1);
1030 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1032 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1033 if (!disable_scofix)
1034 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1037 if (id->driver_info & BTUSB_BROKEN_ISOC)
1040 if (id->driver_info & BTUSB_DIGIANSWER) {
1041 data->cmdreq_type = USB_TYPE_VENDOR;
1042 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1045 if (id->driver_info & BTUSB_CSR) {
1046 struct usb_device *udev = data->udev;
1048 /* Old firmware would otherwise execute USB reset */
1049 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1050 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1053 if (id->driver_info & BTUSB_SNIFFER) {
1054 struct usb_device *udev = data->udev;
1056 /* New sniffer firmware has crippled HCI interface */
1057 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1058 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1063 if (id->driver_info & BTUSB_BCM92035) {
1064 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1065 struct sk_buff *skb;
1067 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1069 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1070 skb_queue_tail(&hdev->driver_init, skb);
1075 err = usb_driver_claim_interface(&btusb_driver,
1084 err = hci_register_dev(hdev);
1091 usb_set_intfdata(intf, data);
1096 static void btusb_disconnect(struct usb_interface *intf)
1098 struct btusb_data *data = usb_get_intfdata(intf);
1099 struct hci_dev *hdev;
1101 BT_DBG("intf %p", intf);
1108 __hci_dev_hold(hdev);
1110 usb_set_intfdata(data->intf, NULL);
1113 usb_set_intfdata(data->isoc, NULL);
1115 hci_unregister_dev(hdev);
1117 if (intf == data->isoc)
1118 usb_driver_release_interface(&btusb_driver, data->intf);
1119 else if (data->isoc)
1120 usb_driver_release_interface(&btusb_driver, data->isoc);
1122 __hci_dev_put(hdev);
1128 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1130 struct btusb_data *data = usb_get_intfdata(intf);
1132 BT_DBG("intf %p", intf);
1134 if (data->suspend_count++)
1137 spin_lock_irq(&data->txlock);
1138 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1139 set_bit(BTUSB_SUSPENDING, &data->flags);
1140 spin_unlock_irq(&data->txlock);
1142 spin_unlock_irq(&data->txlock);
1143 data->suspend_count--;
1147 cancel_work_sync(&data->work);
1149 btusb_stop_traffic(data);
1150 usb_kill_anchored_urbs(&data->tx_anchor);
1155 static void play_deferred(struct btusb_data *data)
1160 while ((urb = usb_get_from_anchor(&data->deferred))) {
1161 err = usb_submit_urb(urb, GFP_ATOMIC);
1165 data->tx_in_flight++;
1167 usb_scuttle_anchored_urbs(&data->deferred);
1170 static int btusb_resume(struct usb_interface *intf)
1172 struct btusb_data *data = usb_get_intfdata(intf);
1173 struct hci_dev *hdev = data->hdev;
1176 BT_DBG("intf %p", intf);
1178 if (--data->suspend_count)
1181 if (!test_bit(HCI_RUNNING, &hdev->flags))
1184 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1185 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1187 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1192 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1193 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1195 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1199 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1202 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1203 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1204 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1206 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1209 spin_lock_irq(&data->txlock);
1210 play_deferred(data);
1211 clear_bit(BTUSB_SUSPENDING, &data->flags);
1212 spin_unlock_irq(&data->txlock);
1213 schedule_work(&data->work);
1218 usb_scuttle_anchored_urbs(&data->deferred);
1220 spin_lock_irq(&data->txlock);
1221 clear_bit(BTUSB_SUSPENDING, &data->flags);
1222 spin_unlock_irq(&data->txlock);
1228 static struct usb_driver btusb_driver = {
1230 .probe = btusb_probe,
1231 .disconnect = btusb_disconnect,
1233 .suspend = btusb_suspend,
1234 .resume = btusb_resume,
1236 .id_table = btusb_table,
1237 .supports_autosuspend = 1,
1240 static int __init btusb_init(void)
1242 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1244 return usb_register(&btusb_driver);
1247 static void __exit btusb_exit(void)
1249 usb_deregister(&btusb_driver);
1252 module_init(btusb_init);
1253 module_exit(btusb_exit);
1255 module_param(ignore_dga, bool, 0644);
1256 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1258 module_param(ignore_csr, bool, 0644);
1259 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1261 module_param(ignore_sniffer, bool, 0644);
1262 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1264 module_param(disable_scofix, bool, 0644);
1265 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1267 module_param(force_scofix, bool, 0644);
1268 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1270 module_param(reset, bool, 0644);
1271 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1273 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1274 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1275 MODULE_VERSION(VERSION);
1276 MODULE_LICENSE("GPL");