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/module.h>
25 #include <linux/usb.h>
27 #include <net/bluetooth/bluetooth.h>
28 #include <net/bluetooth/hci_core.h>
32 static bool ignore_dga;
33 static bool ignore_csr;
34 static bool ignore_sniffer;
35 static bool disable_scofix;
36 static bool force_scofix;
38 static bool reset = 1;
40 static struct usb_driver btusb_driver;
42 #define BTUSB_IGNORE 0x01
43 #define BTUSB_DIGIANSWER 0x02
44 #define BTUSB_CSR 0x04
45 #define BTUSB_SNIFFER 0x08
46 #define BTUSB_BCM92035 0x10
47 #define BTUSB_BROKEN_ISOC 0x20
48 #define BTUSB_WRONG_SCO_MTU 0x40
49 #define BTUSB_ATH3012 0x80
51 static struct usb_device_id btusb_table[] = {
52 /* Generic Bluetooth USB device */
53 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
55 /* Apple-specific (Broadcom) devices */
56 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
58 /* Broadcom SoftSailing reporting vendor specific */
59 { USB_DEVICE(0x0a5c, 0x21e1) },
61 /* Apple MacBookPro 7,1 */
62 { USB_DEVICE(0x05ac, 0x8213) },
65 { USB_DEVICE(0x05ac, 0x8215) },
67 /* Apple MacBookPro6,2 */
68 { USB_DEVICE(0x05ac, 0x8218) },
70 /* Apple MacBookAir3,1, MacBookAir3,2 */
71 { USB_DEVICE(0x05ac, 0x821b) },
73 /* Apple MacBookAir4,1 */
74 { USB_DEVICE(0x05ac, 0x821f) },
76 /* Apple MacBookPro8,2 */
77 { USB_DEVICE(0x05ac, 0x821a) },
79 /* Apple MacMini5,1 */
80 { USB_DEVICE(0x05ac, 0x8281) },
82 /* AVM BlueFRITZ! USB v2.0 */
83 { USB_DEVICE(0x057c, 0x3800) },
85 /* Bluetooth Ultraport Module from IBM */
86 { USB_DEVICE(0x04bf, 0x030a) },
88 /* ALPS Modules with non-standard id */
89 { USB_DEVICE(0x044e, 0x3001) },
90 { USB_DEVICE(0x044e, 0x3002) },
92 /* Ericsson with non-standard id */
93 { USB_DEVICE(0x0bdb, 0x1002) },
95 /* Canyon CN-BTU1 with HID interfaces */
96 { USB_DEVICE(0x0c10, 0x0000) },
98 /* Broadcom BCM20702A0 */
99 { USB_DEVICE(0x0489, 0xe042) },
100 { USB_DEVICE(0x413c, 0x8197) },
102 /* Foxconn - Hon Hai */
103 { USB_DEVICE(0x0489, 0xe033) },
105 /*Broadcom devices with vendor specific id */
106 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
108 { } /* Terminating entry */
111 MODULE_DEVICE_TABLE(usb, btusb_table);
113 static struct usb_device_id blacklist_table[] = {
114 /* CSR BlueCore devices */
115 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
117 /* Broadcom BCM2033 without firmware */
118 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
120 /* Atheros 3011 with sflash firmware */
121 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
122 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
123 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
124 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
125 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
127 /* Atheros AR9285 Malbec with sflash firmware */
128 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
130 /* Atheros 3012 with sflash firmware */
131 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
132 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
133 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
134 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
135 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
136 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
137 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
138 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
140 /* Atheros AR5BBU12 with sflash firmware */
141 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
143 /* Atheros AR5BBU12 with sflash firmware */
144 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
145 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
147 /* Broadcom BCM2035 */
148 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
149 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
150 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
152 /* Broadcom BCM2045 */
153 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
154 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
156 /* IBM/Lenovo ThinkPad with Broadcom chip */
157 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
158 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
160 /* HP laptop with Broadcom chip */
161 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
163 /* Dell laptop with Broadcom chip */
164 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
166 /* Dell Wireless 370 and 410 devices */
167 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
168 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
170 /* Belkin F8T012 and F8T013 devices */
171 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
172 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
174 /* Asus WL-BTD202 device */
175 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
177 /* Kensington Bluetooth USB adapter */
178 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
180 /* RTX Telecom based adapters with buggy SCO support */
181 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
182 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
184 /* CONWISE Technology based adapters with buggy SCO support */
185 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
187 /* Digianswer devices */
188 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
189 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
191 /* CSR BlueCore Bluetooth Sniffer */
192 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
194 /* Frontline ComProbe Bluetooth Sniffer */
195 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
197 { } /* Terminating entry */
200 #define BTUSB_MAX_ISOC_FRAMES 10
202 #define BTUSB_INTR_RUNNING 0
203 #define BTUSB_BULK_RUNNING 1
204 #define BTUSB_ISOC_RUNNING 2
205 #define BTUSB_SUSPENDING 3
206 #define BTUSB_DID_ISO_RESUME 4
209 struct hci_dev *hdev;
210 struct usb_device *udev;
211 struct usb_interface *intf;
212 struct usb_interface *isoc;
218 struct work_struct work;
219 struct work_struct waker;
221 struct usb_anchor tx_anchor;
222 struct usb_anchor intr_anchor;
223 struct usb_anchor bulk_anchor;
224 struct usb_anchor isoc_anchor;
225 struct usb_anchor deferred;
229 struct usb_endpoint_descriptor *intr_ep;
230 struct usb_endpoint_descriptor *bulk_tx_ep;
231 struct usb_endpoint_descriptor *bulk_rx_ep;
232 struct usb_endpoint_descriptor *isoc_tx_ep;
233 struct usb_endpoint_descriptor *isoc_rx_ep;
237 unsigned int sco_num;
242 static int inc_tx(struct btusb_data *data)
247 spin_lock_irqsave(&data->txlock, flags);
248 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
250 data->tx_in_flight++;
251 spin_unlock_irqrestore(&data->txlock, flags);
256 static void btusb_intr_complete(struct urb *urb)
258 struct hci_dev *hdev = urb->context;
259 struct btusb_data *data = hci_get_drvdata(hdev);
262 BT_DBG("%s urb %p status %d count %d", hdev->name,
263 urb, urb->status, urb->actual_length);
265 if (!test_bit(HCI_RUNNING, &hdev->flags))
268 if (urb->status == 0) {
269 hdev->stat.byte_rx += urb->actual_length;
271 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
272 urb->transfer_buffer,
273 urb->actual_length) < 0) {
274 BT_ERR("%s corrupted event packet", hdev->name);
279 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
282 usb_mark_last_busy(data->udev);
283 usb_anchor_urb(urb, &data->intr_anchor);
285 err = usb_submit_urb(urb, GFP_ATOMIC);
287 /* -EPERM: urb is being killed;
288 * -ENODEV: device got disconnected */
289 if (err != -EPERM && err != -ENODEV)
290 BT_ERR("%s urb %p failed to resubmit (%d)",
291 hdev->name, urb, -err);
292 usb_unanchor_urb(urb);
296 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
298 struct btusb_data *data = hci_get_drvdata(hdev);
304 BT_DBG("%s", hdev->name);
309 urb = usb_alloc_urb(0, mem_flags);
313 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
315 buf = kmalloc(size, mem_flags);
321 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
323 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
324 btusb_intr_complete, hdev,
325 data->intr_ep->bInterval);
327 urb->transfer_flags |= URB_FREE_BUFFER;
329 usb_anchor_urb(urb, &data->intr_anchor);
331 err = usb_submit_urb(urb, mem_flags);
333 if (err != -EPERM && err != -ENODEV)
334 BT_ERR("%s urb %p submission failed (%d)",
335 hdev->name, urb, -err);
336 usb_unanchor_urb(urb);
344 static void btusb_bulk_complete(struct urb *urb)
346 struct hci_dev *hdev = urb->context;
347 struct btusb_data *data = hci_get_drvdata(hdev);
350 BT_DBG("%s urb %p status %d count %d", hdev->name,
351 urb, urb->status, urb->actual_length);
353 if (!test_bit(HCI_RUNNING, &hdev->flags))
356 if (urb->status == 0) {
357 hdev->stat.byte_rx += urb->actual_length;
359 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
360 urb->transfer_buffer,
361 urb->actual_length) < 0) {
362 BT_ERR("%s corrupted ACL packet", hdev->name);
367 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
370 usb_anchor_urb(urb, &data->bulk_anchor);
371 usb_mark_last_busy(data->udev);
373 err = usb_submit_urb(urb, GFP_ATOMIC);
375 /* -EPERM: urb is being killed;
376 * -ENODEV: device got disconnected */
377 if (err != -EPERM && err != -ENODEV)
378 BT_ERR("%s urb %p failed to resubmit (%d)",
379 hdev->name, urb, -err);
380 usb_unanchor_urb(urb);
384 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
386 struct btusb_data *data = hci_get_drvdata(hdev);
390 int err, size = HCI_MAX_FRAME_SIZE;
392 BT_DBG("%s", hdev->name);
394 if (!data->bulk_rx_ep)
397 urb = usb_alloc_urb(0, mem_flags);
401 buf = kmalloc(size, mem_flags);
407 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
409 usb_fill_bulk_urb(urb, data->udev, pipe,
410 buf, size, btusb_bulk_complete, hdev);
412 urb->transfer_flags |= URB_FREE_BUFFER;
414 usb_mark_last_busy(data->udev);
415 usb_anchor_urb(urb, &data->bulk_anchor);
417 err = usb_submit_urb(urb, mem_flags);
419 if (err != -EPERM && err != -ENODEV)
420 BT_ERR("%s urb %p submission failed (%d)",
421 hdev->name, urb, -err);
422 usb_unanchor_urb(urb);
430 static void btusb_isoc_complete(struct urb *urb)
432 struct hci_dev *hdev = urb->context;
433 struct btusb_data *data = hci_get_drvdata(hdev);
436 BT_DBG("%s urb %p status %d count %d", hdev->name,
437 urb, urb->status, urb->actual_length);
439 if (!test_bit(HCI_RUNNING, &hdev->flags))
442 if (urb->status == 0) {
443 for (i = 0; i < urb->number_of_packets; i++) {
444 unsigned int offset = urb->iso_frame_desc[i].offset;
445 unsigned int length = urb->iso_frame_desc[i].actual_length;
447 if (urb->iso_frame_desc[i].status)
450 hdev->stat.byte_rx += length;
452 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
453 urb->transfer_buffer + offset,
455 BT_ERR("%s corrupted SCO packet", hdev->name);
461 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
464 usb_anchor_urb(urb, &data->isoc_anchor);
466 err = usb_submit_urb(urb, GFP_ATOMIC);
468 /* -EPERM: urb is being killed;
469 * -ENODEV: device got disconnected */
470 if (err != -EPERM && err != -ENODEV)
471 BT_ERR("%s urb %p failed to resubmit (%d)",
472 hdev->name, urb, -err);
473 usb_unanchor_urb(urb);
477 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
481 BT_DBG("len %d mtu %d", len, mtu);
483 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
484 i++, offset += mtu, len -= mtu) {
485 urb->iso_frame_desc[i].offset = offset;
486 urb->iso_frame_desc[i].length = mtu;
489 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
490 urb->iso_frame_desc[i].offset = offset;
491 urb->iso_frame_desc[i].length = len;
495 urb->number_of_packets = i;
498 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
500 struct btusb_data *data = hci_get_drvdata(hdev);
506 BT_DBG("%s", hdev->name);
508 if (!data->isoc_rx_ep)
511 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
515 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
516 BTUSB_MAX_ISOC_FRAMES;
518 buf = kmalloc(size, mem_flags);
524 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
526 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
527 hdev, data->isoc_rx_ep->bInterval);
529 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
531 __fill_isoc_descriptor(urb, size,
532 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
534 usb_anchor_urb(urb, &data->isoc_anchor);
536 err = usb_submit_urb(urb, mem_flags);
538 if (err != -EPERM && err != -ENODEV)
539 BT_ERR("%s urb %p submission failed (%d)",
540 hdev->name, urb, -err);
541 usb_unanchor_urb(urb);
549 static void btusb_tx_complete(struct urb *urb)
551 struct sk_buff *skb = urb->context;
552 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
553 struct btusb_data *data = hci_get_drvdata(hdev);
555 BT_DBG("%s urb %p status %d count %d", hdev->name,
556 urb, urb->status, urb->actual_length);
558 if (!test_bit(HCI_RUNNING, &hdev->flags))
562 hdev->stat.byte_tx += urb->transfer_buffer_length;
567 spin_lock(&data->txlock);
568 data->tx_in_flight--;
569 spin_unlock(&data->txlock);
571 kfree(urb->setup_packet);
576 static void btusb_isoc_tx_complete(struct urb *urb)
578 struct sk_buff *skb = urb->context;
579 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
581 BT_DBG("%s urb %p status %d count %d", hdev->name,
582 urb, urb->status, urb->actual_length);
584 if (!test_bit(HCI_RUNNING, &hdev->flags))
588 hdev->stat.byte_tx += urb->transfer_buffer_length;
593 kfree(urb->setup_packet);
598 static int btusb_open(struct hci_dev *hdev)
600 struct btusb_data *data = hci_get_drvdata(hdev);
603 BT_DBG("%s", hdev->name);
605 err = usb_autopm_get_interface(data->intf);
609 data->intf->needs_remote_wakeup = 1;
611 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
614 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
617 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
621 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
623 usb_kill_anchored_urbs(&data->intr_anchor);
627 set_bit(BTUSB_BULK_RUNNING, &data->flags);
628 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
631 usb_autopm_put_interface(data->intf);
635 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
636 clear_bit(HCI_RUNNING, &hdev->flags);
637 usb_autopm_put_interface(data->intf);
641 static void btusb_stop_traffic(struct btusb_data *data)
643 usb_kill_anchored_urbs(&data->intr_anchor);
644 usb_kill_anchored_urbs(&data->bulk_anchor);
645 usb_kill_anchored_urbs(&data->isoc_anchor);
648 static int btusb_close(struct hci_dev *hdev)
650 struct btusb_data *data = hci_get_drvdata(hdev);
653 BT_DBG("%s", hdev->name);
655 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
658 cancel_work_sync(&data->work);
659 cancel_work_sync(&data->waker);
661 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
662 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
663 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
665 btusb_stop_traffic(data);
666 err = usb_autopm_get_interface(data->intf);
670 data->intf->needs_remote_wakeup = 0;
671 usb_autopm_put_interface(data->intf);
674 usb_scuttle_anchored_urbs(&data->deferred);
678 static int btusb_flush(struct hci_dev *hdev)
680 struct btusb_data *data = hci_get_drvdata(hdev);
682 BT_DBG("%s", hdev->name);
684 usb_kill_anchored_urbs(&data->tx_anchor);
689 static int btusb_send_frame(struct sk_buff *skb)
691 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
692 struct btusb_data *data = hci_get_drvdata(hdev);
693 struct usb_ctrlrequest *dr;
698 BT_DBG("%s", hdev->name);
700 if (!test_bit(HCI_RUNNING, &hdev->flags))
703 switch (bt_cb(skb)->pkt_type) {
704 case HCI_COMMAND_PKT:
705 urb = usb_alloc_urb(0, GFP_ATOMIC);
709 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
715 dr->bRequestType = data->cmdreq_type;
719 dr->wLength = __cpu_to_le16(skb->len);
721 pipe = usb_sndctrlpipe(data->udev, 0x00);
723 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
724 skb->data, skb->len, btusb_tx_complete, skb);
729 case HCI_ACLDATA_PKT:
730 if (!data->bulk_tx_ep)
733 urb = usb_alloc_urb(0, GFP_ATOMIC);
737 pipe = usb_sndbulkpipe(data->udev,
738 data->bulk_tx_ep->bEndpointAddress);
740 usb_fill_bulk_urb(urb, data->udev, pipe,
741 skb->data, skb->len, btusb_tx_complete, skb);
746 case HCI_SCODATA_PKT:
747 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
750 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
754 pipe = usb_sndisocpipe(data->udev,
755 data->isoc_tx_ep->bEndpointAddress);
757 usb_fill_int_urb(urb, data->udev, pipe,
758 skb->data, skb->len, btusb_isoc_tx_complete,
759 skb, data->isoc_tx_ep->bInterval);
761 urb->transfer_flags = URB_ISO_ASAP;
763 __fill_isoc_descriptor(urb, skb->len,
764 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
775 usb_anchor_urb(urb, &data->deferred);
776 schedule_work(&data->waker);
782 usb_anchor_urb(urb, &data->tx_anchor);
784 err = usb_submit_urb(urb, GFP_ATOMIC);
786 if (err != -EPERM && err != -ENODEV)
787 BT_ERR("%s urb %p submission failed (%d)",
788 hdev->name, urb, -err);
789 kfree(urb->setup_packet);
790 usb_unanchor_urb(urb);
792 usb_mark_last_busy(data->udev);
800 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
802 struct btusb_data *data = hci_get_drvdata(hdev);
804 BT_DBG("%s evt %d", hdev->name, evt);
806 if (hdev->conn_hash.sco_num != data->sco_num) {
807 data->sco_num = hdev->conn_hash.sco_num;
808 schedule_work(&data->work);
812 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
814 struct btusb_data *data = hci_get_drvdata(hdev);
815 struct usb_interface *intf = data->isoc;
816 struct usb_endpoint_descriptor *ep_desc;
822 err = usb_set_interface(data->udev, 1, altsetting);
824 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
828 data->isoc_altsetting = altsetting;
830 data->isoc_tx_ep = NULL;
831 data->isoc_rx_ep = NULL;
833 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
834 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
836 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
837 data->isoc_tx_ep = ep_desc;
841 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
842 data->isoc_rx_ep = ep_desc;
847 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
848 BT_ERR("%s invalid SCO descriptors", hdev->name);
855 static void btusb_work(struct work_struct *work)
857 struct btusb_data *data = container_of(work, struct btusb_data, work);
858 struct hci_dev *hdev = data->hdev;
862 if (hdev->conn_hash.sco_num > 0) {
863 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
864 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
866 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
867 usb_kill_anchored_urbs(&data->isoc_anchor);
871 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
874 if (hdev->voice_setting & 0x0020) {
875 static const int alts[3] = { 2, 4, 5 };
876 new_alts = alts[hdev->conn_hash.sco_num - 1];
878 new_alts = hdev->conn_hash.sco_num;
881 if (data->isoc_altsetting != new_alts) {
882 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
883 usb_kill_anchored_urbs(&data->isoc_anchor);
885 if (__set_isoc_interface(hdev, new_alts) < 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 hci_set_drvdata(hdev, 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->notify = btusb_notify;
1023 /* Interface numbers are hardcoded in the specification */
1024 data->isoc = usb_ifnum_to_if(data->udev, 1);
1027 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1029 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1030 if (!disable_scofix)
1031 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1034 if (id->driver_info & BTUSB_BROKEN_ISOC)
1037 if (id->driver_info & BTUSB_DIGIANSWER) {
1038 data->cmdreq_type = USB_TYPE_VENDOR;
1039 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1042 if (id->driver_info & BTUSB_CSR) {
1043 struct usb_device *udev = data->udev;
1045 /* Old firmware would otherwise execute USB reset */
1046 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1047 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1050 if (id->driver_info & BTUSB_SNIFFER) {
1051 struct usb_device *udev = data->udev;
1053 /* New sniffer firmware has crippled HCI interface */
1054 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1055 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1060 if (id->driver_info & BTUSB_BCM92035) {
1061 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1062 struct sk_buff *skb;
1064 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1066 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1067 skb_queue_tail(&hdev->driver_init, skb);
1072 err = usb_driver_claim_interface(&btusb_driver,
1081 err = hci_register_dev(hdev);
1088 usb_set_intfdata(intf, data);
1093 static void btusb_disconnect(struct usb_interface *intf)
1095 struct btusb_data *data = usb_get_intfdata(intf);
1096 struct hci_dev *hdev;
1098 BT_DBG("intf %p", intf);
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);
1121 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1123 struct btusb_data *data = usb_get_intfdata(intf);
1125 BT_DBG("intf %p", intf);
1127 if (data->suspend_count++)
1130 spin_lock_irq(&data->txlock);
1131 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1132 set_bit(BTUSB_SUSPENDING, &data->flags);
1133 spin_unlock_irq(&data->txlock);
1135 spin_unlock_irq(&data->txlock);
1136 data->suspend_count--;
1140 cancel_work_sync(&data->work);
1142 btusb_stop_traffic(data);
1143 usb_kill_anchored_urbs(&data->tx_anchor);
1148 static void play_deferred(struct btusb_data *data)
1153 while ((urb = usb_get_from_anchor(&data->deferred))) {
1154 err = usb_submit_urb(urb, GFP_ATOMIC);
1158 data->tx_in_flight++;
1160 usb_scuttle_anchored_urbs(&data->deferred);
1163 static int btusb_resume(struct usb_interface *intf)
1165 struct btusb_data *data = usb_get_intfdata(intf);
1166 struct hci_dev *hdev = data->hdev;
1169 BT_DBG("intf %p", intf);
1171 if (--data->suspend_count)
1174 if (!test_bit(HCI_RUNNING, &hdev->flags))
1177 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1178 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1180 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1185 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1186 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1188 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1192 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1195 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1196 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1197 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1199 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1202 spin_lock_irq(&data->txlock);
1203 play_deferred(data);
1204 clear_bit(BTUSB_SUSPENDING, &data->flags);
1205 spin_unlock_irq(&data->txlock);
1206 schedule_work(&data->work);
1211 usb_scuttle_anchored_urbs(&data->deferred);
1213 spin_lock_irq(&data->txlock);
1214 clear_bit(BTUSB_SUSPENDING, &data->flags);
1215 spin_unlock_irq(&data->txlock);
1221 static struct usb_driver btusb_driver = {
1223 .probe = btusb_probe,
1224 .disconnect = btusb_disconnect,
1226 .suspend = btusb_suspend,
1227 .resume = btusb_resume,
1229 .id_table = btusb_table,
1230 .supports_autosuspend = 1,
1231 .disable_hub_initiated_lpm = 1,
1234 module_usb_driver(btusb_driver);
1236 module_param(ignore_dga, bool, 0644);
1237 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1239 module_param(ignore_csr, bool, 0644);
1240 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1242 module_param(ignore_sniffer, bool, 0644);
1243 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1245 module_param(disable_scofix, bool, 0644);
1246 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1248 module_param(force_scofix, bool, 0644);
1249 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1251 module_param(reset, bool, 0644);
1252 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1254 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1255 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1256 MODULE_VERSION(VERSION);
1257 MODULE_LICENSE("GPL");