drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   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.
  12  *
  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.
  17  *
  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
  21  *
  22  */
  23
  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>
  32
  33 #include <linux/usb.h>
  34
  35 #include <net/bluetooth/bluetooth.h>
  36 #include <net/bluetooth/hci_core.h>
  37
  38 #define VERSION "0.6"
  39
  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;
  45
  46 static int reset = 1;
  47
  48 static struct usb_driver btusb_driver;
  49
  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
  58 static struct usb_device_id btusb_table[] = {
  59         /* Generic Bluetooth USB device */
  60         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  61
  62         /* AVM BlueFRITZ! USB v2.0 */
  63         { USB_DEVICE(0x057c, 0x3800) },
  64
  65         /* Bluetooth Ultraport Module from IBM */
  66         { USB_DEVICE(0x04bf, 0x030a) },
  67
  68         /* ALPS Modules with non-standard id */
  69         { USB_DEVICE(0x044e, 0x3001) },
  70         { USB_DEVICE(0x044e, 0x3002) },
  71
  72         /* Ericsson with non-standard id */
  73         { USB_DEVICE(0x0bdb, 0x1002) },
  74
  75         /* Canyon CN-BTU1 with HID interfaces */
  76         { USB_DEVICE(0x0c10, 0x0000) },
  77
  78         { }     /* Terminating entry */
  79 };
  80
  81 MODULE_DEVICE_TABLE(usb, btusb_table);
  82
  83 static struct usb_device_id blacklist_table[] = {
  84         /* CSR BlueCore devices */
  85         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
  86
  87         /* Broadcom BCM2033 without firmware */
  88         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
  89
  90         /* Broadcom BCM2035 */
  91         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
  92         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
  93         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
  94
  95         /* Broadcom BCM2045 */
  96         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
  97         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
  98
  99         /* IBM/Lenovo ThinkPad with Broadcom chip */
 100         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 101         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 102
 103         /* HP laptop with Broadcom chip */
 104         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 105
 106         /* Dell laptop with Broadcom chip */
 107         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 108
 109         /* Dell Wireless 370 and 410 devices */
 110         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 111         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 112
 113         /* Belkin F8T012 and F8T013 devices */
 114         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 115         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 116
 117         /* Asus WL-BTD202 device */
 118         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 119
 120         /* Kensington Bluetooth USB adapter */
 121         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 122
 123         /* RTX Telecom based adapters with buggy SCO support */
 124         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 125         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 126
 127         /* CONWISE Technology based adapters with buggy SCO support */
 128         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 129
 130         /* Digianswer devices */
 131         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 132         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 133
 134         /* CSR BlueCore Bluetooth Sniffer */
 135         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 136
 137         /* Frontline ComProbe Bluetooth Sniffer */
 138         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 139
 140         { }     /* Terminating entry */
 141 };
 142
 143 #define BTUSB_MAX_ISOC_FRAMES   10
 144
 145 #define BTUSB_INTR_RUNNING      0
 146 #define BTUSB_BULK_RUNNING      1
 147 #define BTUSB_ISOC_RUNNING      2
 148 #define BTUSB_SUSPENDING        3
 149
 150 struct btusb_data {
 151         struct hci_dev       *hdev;
 152         struct usb_device    *udev;
 153         struct usb_interface *intf;
 154         struct usb_interface *isoc;
 155
 156         spinlock_t lock;
 157
 158         unsigned long flags;
 159
 160         struct work_struct work;
 161         struct work_struct waker;
 162
 163         struct usb_anchor tx_anchor;
 164         struct usb_anchor intr_anchor;
 165         struct usb_anchor bulk_anchor;
 166         struct usb_anchor isoc_anchor;
 167         struct usb_anchor deferred;
 168         int tx_in_flight;
 169         spinlock_t txlock;
 170
 171         struct usb_endpoint_descriptor *intr_ep;
 172         struct usb_endpoint_descriptor *bulk_tx_ep;
 173         struct usb_endpoint_descriptor *bulk_rx_ep;
 174         struct usb_endpoint_descriptor *isoc_tx_ep;
 175         struct usb_endpoint_descriptor *isoc_rx_ep;
 176
 177         __u8 cmdreq_type;
 178
 179         unsigned int sco_num;
 180         int isoc_altsetting;
 181         int suspend_count;
 182         int did_iso_resume:1;
 183 };
 184
 185 static int inc_tx(struct btusb_data *data)
 186 {
 187         unsigned long flags;
 188         int rv;
 189
 190         spin_lock_irqsave(&data->txlock, flags);
 191         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 192         if (!rv)
 193                 data->tx_in_flight++;
 194         spin_unlock_irqrestore(&data->txlock, flags);
 195
 196         return rv;
 197 }
 198
 199 static void btusb_intr_complete(struct urb *urb)
 200 {
 201         struct hci_dev *hdev = urb->context;
 202         struct btusb_data *data = hdev->driver_data;
 203         int err;
 204
 205         BT_DBG("%s urb %p status %d count %d", hdev->name,
 206                                         urb, urb->status, urb->actual_length);
 207
 208         if (!test_bit(HCI_RUNNING, &hdev->flags))
 209                 return;
 210
 211         if (urb->status == 0) {
 212                 hdev->stat.byte_rx += urb->actual_length;
 213
 214                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 215                                                 urb->transfer_buffer,
 216                                                 urb->actual_length) < 0) {
 217                         BT_ERR("%s corrupted event packet", hdev->name);
 218                         hdev->stat.err_rx++;
 219                 }
 220         }
 221
 222         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 223                 return;
 224
 225         usb_mark_last_busy(data->udev);
 226         usb_anchor_urb(urb, &data->intr_anchor);
 227
 228         err = usb_submit_urb(urb, GFP_ATOMIC);
 229         if (err < 0) {
 230                 BT_ERR("%s urb %p failed to resubmit (%d)",
 231                                                 hdev->name, urb, -err);
 232                 usb_unanchor_urb(urb);
 233         }
 234 }
 235
 236 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 237 {
 238         struct btusb_data *data = hdev->driver_data;
 239         struct urb *urb;
 240         unsigned char *buf;
 241         unsigned int pipe;
 242         int err, size;
 243
 244         BT_DBG("%s", hdev->name);
 245
 246         if (!data->intr_ep)
 247                 return -ENODEV;
 248
 249         urb = usb_alloc_urb(0, mem_flags);
 250         if (!urb)
 251                 return -ENOMEM;
 252
 253         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 254
 255         buf = kmalloc(size, mem_flags);
 256         if (!buf) {
 257                 usb_free_urb(urb);
 258                 return -ENOMEM;
 259         }
 260
 261         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 262
 263         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 264                                                 btusb_intr_complete, hdev,
 265                                                 data->intr_ep->bInterval);
 266
 267         urb->transfer_flags |= URB_FREE_BUFFER;
 268
 269         usb_anchor_urb(urb, &data->intr_anchor);
 270
 271         err = usb_submit_urb(urb, mem_flags);
 272         if (err < 0) {
 273                 BT_ERR("%s urb %p submission failed (%d)",
 274                                                 hdev->name, urb, -err);
 275                 usb_unanchor_urb(urb);
 276         }
 277
 278         usb_free_urb(urb);
 279
 280         return err;
 281 }
 282
 283 static void btusb_bulk_complete(struct urb *urb)
 284 {
 285         struct hci_dev *hdev = urb->context;
 286         struct btusb_data *data = hdev->driver_data;
 287         int err;
 288
 289         BT_DBG("%s urb %p status %d count %d", hdev->name,
 290                                         urb, urb->status, urb->actual_length);
 291
 292         if (!test_bit(HCI_RUNNING, &hdev->flags))
 293                 return;
 294
 295         if (urb->status == 0) {
 296                 hdev->stat.byte_rx += urb->actual_length;
 297
 298                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 299                                                 urb->transfer_buffer,
 300                                                 urb->actual_length) < 0) {
 301                         BT_ERR("%s corrupted ACL packet", hdev->name);
 302                         hdev->stat.err_rx++;
 303                 }
 304         }
 305
 306         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 307                 return;
 308
 309         usb_anchor_urb(urb, &data->bulk_anchor);
 310         usb_mark_last_busy(data->udev);
 311
 312         err = usb_submit_urb(urb, GFP_ATOMIC);
 313         if (err < 0) {
 314                 BT_ERR("%s urb %p failed to resubmit (%d)",
 315                                                 hdev->name, urb, -err);
 316                 usb_unanchor_urb(urb);
 317         }
 318 }
 319
 320 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 321 {
 322         struct btusb_data *data = hdev->driver_data;
 323         struct urb *urb;
 324         unsigned char *buf;
 325         unsigned int pipe;
 326         int err, size = HCI_MAX_FRAME_SIZE;
 327
 328         BT_DBG("%s", hdev->name);
 329
 330         if (!data->bulk_rx_ep)
 331                 return -ENODEV;
 332
 333         urb = usb_alloc_urb(0, mem_flags);
 334         if (!urb)
 335                 return -ENOMEM;
 336
 337         buf = kmalloc(size, mem_flags);
 338         if (!buf) {
 339                 usb_free_urb(urb);
 340                 return -ENOMEM;
 341         }
 342
 343         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 344
 345         usb_fill_bulk_urb(urb, data->udev, pipe,
 346                                         buf, size, btusb_bulk_complete, hdev);
 347
 348         urb->transfer_flags |= URB_FREE_BUFFER;
 349
 350         usb_mark_last_busy(data->udev);
 351         usb_anchor_urb(urb, &data->bulk_anchor);
 352
 353         err = usb_submit_urb(urb, mem_flags);
 354         if (err < 0) {
 355                 BT_ERR("%s urb %p submission failed (%d)",
 356                                                 hdev->name, urb, -err);
 357                 usb_unanchor_urb(urb);
 358         }
 359
 360         usb_free_urb(urb);
 361
 362         return err;
 363 }
 364
 365 static void btusb_isoc_complete(struct urb *urb)
 366 {
 367         struct hci_dev *hdev = urb->context;
 368         struct btusb_data *data = hdev->driver_data;
 369         int i, err;
 370
 371         BT_DBG("%s urb %p status %d count %d", hdev->name,
 372                                         urb, urb->status, urb->actual_length);
 373
 374         if (!test_bit(HCI_RUNNING, &hdev->flags))
 375                 return;
 376
 377         if (urb->status == 0) {
 378                 for (i = 0; i < urb->number_of_packets; i++) {
 379                         unsigned int offset = urb->iso_frame_desc[i].offset;
 380                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 381
 382                         if (urb->iso_frame_desc[i].status)
 383                                 continue;
 384
 385                         hdev->stat.byte_rx += length;
 386
 387                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 388                                                 urb->transfer_buffer + offset,
 389                                                                 length) < 0) {
 390                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 391                                 hdev->stat.err_rx++;
 392                         }
 393                 }
 394         }
 395
 396         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 397                 return;
 398
 399         usb_anchor_urb(urb, &data->isoc_anchor);
 400
 401         err = usb_submit_urb(urb, GFP_ATOMIC);
 402         if (err < 0) {
 403                 BT_ERR("%s urb %p failed to resubmit (%d)",
 404                                                 hdev->name, urb, -err);
 405                 usb_unanchor_urb(urb);
 406         }
 407 }
 408
 409 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 410 {
 411         int i, offset = 0;
 412
 413         BT_DBG("len %d mtu %d", len, mtu);
 414
 415         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 416                                         i++, offset += mtu, len -= mtu) {
 417                 urb->iso_frame_desc[i].offset = offset;
 418                 urb->iso_frame_desc[i].length = mtu;
 419         }
 420
 421         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 422                 urb->iso_frame_desc[i].offset = offset;
 423                 urb->iso_frame_desc[i].length = len;
 424                 i++;
 425         }
 426
 427         urb->number_of_packets = i;
 428 }
 429
 430 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 431 {
 432         struct btusb_data *data = hdev->driver_data;
 433         struct urb *urb;
 434         unsigned char *buf;
 435         unsigned int pipe;
 436         int err, size;
 437
 438         BT_DBG("%s", hdev->name);
 439
 440         if (!data->isoc_rx_ep)
 441                 return -ENODEV;
 442
 443         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 444         if (!urb)
 445                 return -ENOMEM;
 446
 447         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 448                                                 BTUSB_MAX_ISOC_FRAMES;
 449
 450         buf = kmalloc(size, mem_flags);
 451         if (!buf) {
 452                 usb_free_urb(urb);
 453                 return -ENOMEM;
 454         }
 455
 456         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 457
 458         urb->dev      = data->udev;
 459         urb->pipe     = pipe;
 460         urb->context  = hdev;
 461         urb->complete = btusb_isoc_complete;
 462         urb->interval = data->isoc_rx_ep->bInterval;
 463
 464         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 465         urb->transfer_buffer = buf;
 466         urb->transfer_buffer_length = size;
 467
 468         __fill_isoc_descriptor(urb, size,
 469                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 470
 471         usb_anchor_urb(urb, &data->isoc_anchor);
 472
 473         err = usb_submit_urb(urb, mem_flags);
 474         if (err < 0) {
 475                 BT_ERR("%s urb %p submission failed (%d)",
 476                                                 hdev->name, urb, -err);
 477                 usb_unanchor_urb(urb);
 478         }
 479
 480         usb_free_urb(urb);
 481
 482         return err;
 483 }
 484
 485 static void btusb_tx_complete(struct urb *urb)
 486 {
 487         struct sk_buff *skb = urb->context;
 488         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 489         struct btusb_data *data = hdev->driver_data;
 490
 491         BT_DBG("%s urb %p status %d count %d", hdev->name,
 492                                         urb, urb->status, urb->actual_length);
 493
 494         if (!test_bit(HCI_RUNNING, &hdev->flags))
 495                 goto done;
 496
 497         if (!urb->status)
 498                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 499         else
 500                 hdev->stat.err_tx++;
 501
 502 done:
 503         spin_lock(&data->txlock);
 504         data->tx_in_flight--;
 505         spin_unlock(&data->txlock);
 506
 507         kfree(urb->setup_packet);
 508
 509         kfree_skb(skb);
 510 }
 511
 512 static void btusb_isoc_tx_complete(struct urb *urb)
 513 {
 514         struct sk_buff *skb = urb->context;
 515         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 516
 517         BT_DBG("%s urb %p status %d count %d", hdev->name,
 518                                         urb, urb->status, urb->actual_length);
 519
 520         if (!test_bit(HCI_RUNNING, &hdev->flags))
 521                 goto done;
 522
 523         if (!urb->status)
 524                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 525         else
 526                 hdev->stat.err_tx++;
 527
 528 done:
 529         kfree(urb->setup_packet);
 530
 531         kfree_skb(skb);
 532 }
 533
 534 static int btusb_open(struct hci_dev *hdev)
 535 {
 536         struct btusb_data *data = hdev->driver_data;
 537         int err;
 538
 539         BT_DBG("%s", hdev->name);
 540
 541         err = usb_autopm_get_interface(data->intf);
 542         if (err < 0)
 543                 return err;
 544
 545         data->intf->needs_remote_wakeup = 1;
 546
 547         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 548                 goto done;
 549
 550         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 551                 goto done;
 552
 553         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 554         if (err < 0)
 555                 goto failed;
 556
 557         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 558         if (err < 0) {
 559                 usb_kill_anchored_urbs(&data->intr_anchor);
 560                 goto failed;
 561         }
 562
 563         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 564         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 565
 566 done:
 567         usb_autopm_put_interface(data->intf);
 568         return 0;
 569
 570 failed:
 571         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 572         clear_bit(HCI_RUNNING, &hdev->flags);
 573         usb_autopm_put_interface(data->intf);
 574         return err;
 575 }
 576
 577 static void btusb_stop_traffic(struct btusb_data *data)
 578 {
 579         usb_kill_anchored_urbs(&data->intr_anchor);
 580         usb_kill_anchored_urbs(&data->bulk_anchor);
 581         usb_kill_anchored_urbs(&data->isoc_anchor);
 582 }
 583
 584 static int btusb_close(struct hci_dev *hdev)
 585 {
 586         struct btusb_data *data = hdev->driver_data;
 587         int err;
 588
 589         BT_DBG("%s", hdev->name);
 590
 591         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 592                 return 0;
 593
 594         cancel_work_sync(&data->work);
 595         cancel_work_sync(&data->waker);
 596
 597         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 598         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 599         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 600
 601         btusb_stop_traffic(data);
 602         err = usb_autopm_get_interface(data->intf);
 603         if (err < 0)
 604                 goto failed;
 605
 606         data->intf->needs_remote_wakeup = 0;
 607         usb_autopm_put_interface(data->intf);
 608
 609 failed:
 610         usb_scuttle_anchored_urbs(&data->deferred);
 611         return 0;
 612 }
 613
 614 static int btusb_flush(struct hci_dev *hdev)
 615 {
 616         struct btusb_data *data = hdev->driver_data;
 617
 618         BT_DBG("%s", hdev->name);
 619
 620         usb_kill_anchored_urbs(&data->tx_anchor);
 621
 622         return 0;
 623 }
 624
 625 static int btusb_send_frame(struct sk_buff *skb)
 626 {
 627         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 628         struct btusb_data *data = hdev->driver_data;
 629         struct usb_ctrlrequest *dr;
 630         struct urb *urb;
 631         unsigned int pipe;
 632         int err;
 633
 634         BT_DBG("%s", hdev->name);
 635
 636         if (!test_bit(HCI_RUNNING, &hdev->flags))
 637                 return -EBUSY;
 638
 639         switch (bt_cb(skb)->pkt_type) {
 640         case HCI_COMMAND_PKT:
 641                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 642                 if (!urb)
 643                         return -ENOMEM;
 644
 645                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 646                 if (!dr) {
 647                         usb_free_urb(urb);
 648                         return -ENOMEM;
 649                 }
 650
 651                 dr->bRequestType = data->cmdreq_type;
 652                 dr->bRequest     = 0;
 653                 dr->wIndex       = 0;
 654                 dr->wValue       = 0;
 655                 dr->wLength      = __cpu_to_le16(skb->len);
 656
 657                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 658
 659                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 660                                 skb->data, skb->len, btusb_tx_complete, skb);
 661
 662                 hdev->stat.cmd_tx++;
 663                 break;
 664
 665         case HCI_ACLDATA_PKT:
 666                 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
 667                         return -ENODEV;
 668
 669                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 670                 if (!urb)
 671                         return -ENOMEM;
 672
 673                 pipe = usb_sndbulkpipe(data->udev,
 674                                         data->bulk_tx_ep->bEndpointAddress);
 675
 676                 usb_fill_bulk_urb(urb, data->udev, pipe,
 677                                 skb->data, skb->len, btusb_tx_complete, skb);
 678
 679                 hdev->stat.acl_tx++;
 680                 break;
 681
 682         case HCI_SCODATA_PKT:
 683                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 684                         return -ENODEV;
 685
 686                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 687                 if (!urb)
 688                         return -ENOMEM;
 689
 690                 pipe = usb_sndisocpipe(data->udev,
 691                                         data->isoc_tx_ep->bEndpointAddress);
 692
 693                 urb->dev      = data->udev;
 694                 urb->pipe     = pipe;
 695                 urb->context  = skb;
 696                 urb->complete = btusb_isoc_tx_complete;
 697                 urb->interval = data->isoc_tx_ep->bInterval;
 698
 699                 urb->transfer_flags  = URB_ISO_ASAP;
 700                 urb->transfer_buffer = skb->data;
 701                 urb->transfer_buffer_length = skb->len;
 702
 703                 __fill_isoc_descriptor(urb, skb->len,
 704                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 705
 706                 hdev->stat.sco_tx++;
 707                 goto skip_waking;
 708
 709         default:
 710                 return -EILSEQ;
 711         }
 712
 713         err = inc_tx(data);
 714         if (err) {
 715                 usb_anchor_urb(urb, &data->deferred);
 716                 schedule_work(&data->waker);
 717                 err = 0;
 718                 goto done;
 719         }
 720
 721 skip_waking:
 722         usb_anchor_urb(urb, &data->tx_anchor);
 723
 724         err = usb_submit_urb(urb, GFP_ATOMIC);
 725         if (err < 0) {
 726                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 727                 kfree(urb->setup_packet);
 728                 usb_unanchor_urb(urb);
 729         } else {
 730                 usb_mark_last_busy(data->udev);
 731         }
 732
 733         usb_free_urb(urb);
 734
 735 done:
 736         return err;
 737 }
 738
 739 static void btusb_destruct(struct hci_dev *hdev)
 740 {
 741         struct btusb_data *data = hdev->driver_data;
 742
 743         BT_DBG("%s", hdev->name);
 744
 745         kfree(data);
 746 }
 747
 748 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 749 {
 750         struct btusb_data *data = hdev->driver_data;
 751
 752         BT_DBG("%s evt %d", hdev->name, evt);
 753
 754         if (hdev->conn_hash.sco_num != data->sco_num) {
 755                 data->sco_num = hdev->conn_hash.sco_num;
 756                 schedule_work(&data->work);
 757         }
 758 }
 759
 760 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 761 {
 762         struct btusb_data *data = hdev->driver_data;
 763         struct usb_interface *intf = data->isoc;
 764         struct usb_endpoint_descriptor *ep_desc;
 765         int i, err;
 766
 767         if (!data->isoc)
 768                 return -ENODEV;
 769
 770         err = usb_set_interface(data->udev, 1, altsetting);
 771         if (err < 0) {
 772                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 773                 return err;
 774         }
 775
 776         data->isoc_altsetting = altsetting;
 777
 778         data->isoc_tx_ep = NULL;
 779         data->isoc_rx_ep = NULL;
 780
 781         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 782                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 783
 784                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 785                         data->isoc_tx_ep = ep_desc;
 786                         continue;
 787                 }
 788
 789                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 790                         data->isoc_rx_ep = ep_desc;
 791                         continue;
 792                 }
 793         }
 794
 795         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 796                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 797                 return -ENODEV;
 798         }
 799
 800         return 0;
 801 }
 802
 803 static void btusb_work(struct work_struct *work)
 804 {
 805         struct btusb_data *data = container_of(work, struct btusb_data, work);
 806         struct hci_dev *hdev = data->hdev;
 807         int err;
 808
 809         if (hdev->conn_hash.sco_num > 0) {
 810                 if (!data->did_iso_resume) {
 811                         err = usb_autopm_get_interface(data->isoc);
 812                         if (err < 0) {
 813                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 814                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 815                                 return;
 816                         }
 817
 818                         data->did_iso_resume = 1;
 819                 }
 820                 if (data->isoc_altsetting != 2) {
 821                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 822                         usb_kill_anchored_urbs(&data->isoc_anchor);
 823
 824                         if (__set_isoc_interface(hdev, 2) < 0)
 825                                 return;
 826                 }
 827
 828                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 829                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 830                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 831                         else
 832                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 833                 }
 834         } else {
 835                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 836                 usb_kill_anchored_urbs(&data->isoc_anchor);
 837
 838                 __set_isoc_interface(hdev, 0);
 839                 if (data->did_iso_resume) {
 840                         data->did_iso_resume = 0;
 841                         usb_autopm_put_interface(data->isoc);
 842                 }
 843         }
 844 }
 845
 846 static void btusb_waker(struct work_struct *work)
 847 {
 848         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 849         int err;
 850
 851         err = usb_autopm_get_interface(data->intf);
 852         if (err < 0)
 853                 return;
 854
 855         usb_autopm_put_interface(data->intf);
 856 }
 857
 858 static int btusb_probe(struct usb_interface *intf,
 859                                 const struct usb_device_id *id)
 860 {
 861         struct usb_endpoint_descriptor *ep_desc;
 862         struct btusb_data *data;
 863         struct hci_dev *hdev;
 864         int i, err;
 865
 866         BT_DBG("intf %p id %p", intf, id);
 867
 868         /* interface numbers are hardcoded in the spec */
 869         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 870                 return -ENODEV;
 871
 872         if (!id->driver_info) {
 873                 const struct usb_device_id *match;
 874                 match = usb_match_id(intf, blacklist_table);
 875                 if (match)
 876                         id = match;
 877         }
 878
 879         if (id->driver_info == BTUSB_IGNORE)
 880                 return -ENODEV;
 881
 882         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 883                 return -ENODEV;
 884
 885         if (ignore_csr && id->driver_info & BTUSB_CSR)
 886                 return -ENODEV;
 887
 888         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 889                 return -ENODEV;
 890
 891         data = kzalloc(sizeof(*data), GFP_KERNEL);
 892         if (!data)
 893                 return -ENOMEM;
 894
 895         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 896                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 897
 898                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 899                         data->intr_ep = ep_desc;
 900                         continue;
 901                 }
 902
 903                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 904                         data->bulk_tx_ep = ep_desc;
 905                         continue;
 906                 }
 907
 908                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 909                         data->bulk_rx_ep = ep_desc;
 910                         continue;
 911                 }
 912         }
 913
 914         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 915                 kfree(data);
 916                 return -ENODEV;
 917         }
 918
 919         data->cmdreq_type = USB_TYPE_CLASS;
 920
 921         data->udev = interface_to_usbdev(intf);
 922         data->intf = intf;
 923
 924         spin_lock_init(&data->lock);
 925
 926         INIT_WORK(&data->work, btusb_work);
 927         INIT_WORK(&data->waker, btusb_waker);
 928         spin_lock_init(&data->txlock);
 929
 930         init_usb_anchor(&data->tx_anchor);
 931         init_usb_anchor(&data->intr_anchor);
 932         init_usb_anchor(&data->bulk_anchor);
 933         init_usb_anchor(&data->isoc_anchor);
 934         init_usb_anchor(&data->deferred);
 935
 936         hdev = hci_alloc_dev();
 937         if (!hdev) {
 938                 kfree(data);
 939                 return -ENOMEM;
 940         }
 941
 942         hdev->type = HCI_USB;
 943         hdev->driver_data = data;
 944
 945         data->hdev = hdev;
 946
 947         SET_HCIDEV_DEV(hdev, &intf->dev);
 948
 949         hdev->open     = btusb_open;
 950         hdev->close    = btusb_close;
 951         hdev->flush    = btusb_flush;
 952         hdev->send     = btusb_send_frame;
 953         hdev->destruct = btusb_destruct;
 954         hdev->notify   = btusb_notify;
 955
 956         hdev->owner = THIS_MODULE;
 957
 958         /* Interface numbers are hardcoded in the specification */
 959         data->isoc = usb_ifnum_to_if(data->udev, 1);
 960
 961         if (!reset)
 962                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
 963
 964         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
 965                 if (!disable_scofix)
 966                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
 967         }
 968
 969         if (id->driver_info & BTUSB_BROKEN_ISOC)
 970                 data->isoc = NULL;
 971
 972         if (id->driver_info & BTUSB_DIGIANSWER) {
 973                 data->cmdreq_type = USB_TYPE_VENDOR;
 974                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
 975         }
 976
 977         if (id->driver_info & BTUSB_CSR) {
 978                 struct usb_device *udev = data->udev;
 979
 980                 /* Old firmware would otherwise execute USB reset */
 981                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
 982                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
 983         }
 984
 985         if (id->driver_info & BTUSB_SNIFFER) {
 986                 struct usb_device *udev = data->udev;
 987
 988                 /* New sniffer firmware has crippled HCI interface */
 989                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
 990                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
 991
 992                 data->isoc = NULL;
 993         }
 994
 995         if (id->driver_info & BTUSB_BCM92035) {
 996                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
 997                 struct sk_buff *skb;
 998
 999                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1000                 if (skb) {
1001                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1002                         skb_queue_tail(&hdev->driver_init, skb);
1003                 }
1004         }
1005
1006         if (data->isoc) {
1007                 err = usb_driver_claim_interface(&btusb_driver,
1008                                                         data->isoc, data);
1009                 if (err < 0) {
1010                         hci_free_dev(hdev);
1011                         kfree(data);
1012                         return err;
1013                 }
1014         }
1015
1016         err = hci_register_dev(hdev);
1017         if (err < 0) {
1018                 hci_free_dev(hdev);
1019                 kfree(data);
1020                 return err;
1021         }
1022
1023         usb_set_intfdata(intf, data);
1024
1025         return 0;
1026 }
1027
1028 static void btusb_disconnect(struct usb_interface *intf)
1029 {
1030         struct btusb_data *data = usb_get_intfdata(intf);
1031         struct hci_dev *hdev;
1032
1033         BT_DBG("intf %p", intf);
1034
1035         if (!data)
1036                 return;
1037
1038         hdev = data->hdev;
1039
1040         __hci_dev_hold(hdev);
1041
1042         usb_set_intfdata(data->intf, NULL);
1043
1044         if (data->isoc)
1045                 usb_set_intfdata(data->isoc, NULL);
1046
1047         hci_unregister_dev(hdev);
1048
1049         if (intf == data->isoc)
1050                 usb_driver_release_interface(&btusb_driver, data->intf);
1051         else if (data->isoc)
1052                 usb_driver_release_interface(&btusb_driver, data->isoc);
1053
1054         __hci_dev_put(hdev);
1055
1056         hci_free_dev(hdev);
1057 }
1058
1059 #ifdef CONFIG_PM
1060 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1061 {
1062         struct btusb_data *data = usb_get_intfdata(intf);
1063
1064         BT_DBG("intf %p", intf);
1065
1066         if (data->suspend_count++)
1067                 return 0;
1068
1069         spin_lock_irq(&data->txlock);
1070         if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1071                 set_bit(BTUSB_SUSPENDING, &data->flags);
1072                 spin_unlock_irq(&data->txlock);
1073         } else {
1074                 spin_unlock_irq(&data->txlock);
1075                 data->suspend_count--;
1076                 return -EBUSY;
1077         }
1078
1079         cancel_work_sync(&data->work);
1080
1081         btusb_stop_traffic(data);
1082         usb_kill_anchored_urbs(&data->tx_anchor);
1083
1084         return 0;
1085 }
1086
1087 static void play_deferred(struct btusb_data *data)
1088 {
1089         struct urb *urb;
1090         int err;
1091
1092         while ((urb = usb_get_from_anchor(&data->deferred))) {
1093                 err = usb_submit_urb(urb, GFP_ATOMIC);
1094                 if (err < 0)
1095                         break;
1096
1097                 data->tx_in_flight++;
1098         }
1099         usb_scuttle_anchored_urbs(&data->deferred);
1100 }
1101
1102 static int btusb_resume(struct usb_interface *intf)
1103 {
1104         struct btusb_data *data = usb_get_intfdata(intf);
1105         struct hci_dev *hdev = data->hdev;
1106         int err = 0;
1107
1108         BT_DBG("intf %p", intf);
1109
1110         if (--data->suspend_count)
1111                 return 0;
1112
1113         if (!test_bit(HCI_RUNNING, &hdev->flags))
1114                 goto done;
1115
1116         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1117                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1118                 if (err < 0) {
1119                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1120                         goto failed;
1121                 }
1122         }
1123
1124         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1125                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1126                 if (err < 0) {
1127                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1128                         goto failed;
1129                 }
1130
1131                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1132         }
1133
1134         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1135                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1136                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1137                 else
1138                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1139         }
1140
1141         spin_lock_irq(&data->txlock);
1142         play_deferred(data);
1143         clear_bit(BTUSB_SUSPENDING, &data->flags);
1144         spin_unlock_irq(&data->txlock);
1145         schedule_work(&data->work);
1146
1147         return 0;
1148
1149 failed:
1150         usb_scuttle_anchored_urbs(&data->deferred);
1151 done:
1152         spin_lock_irq(&data->txlock);
1153         clear_bit(BTUSB_SUSPENDING, &data->flags);
1154         spin_unlock_irq(&data->txlock);
1155
1156         return err;
1157 }
1158 #endif
1159
1160 static struct usb_driver btusb_driver = {
1161         .name           = "btusb",
1162         .probe          = btusb_probe,
1163         .disconnect     = btusb_disconnect,
1164 #ifdef CONFIG_PM
1165         .suspend        = btusb_suspend,
1166         .resume         = btusb_resume,
1167 #endif
1168         .id_table       = btusb_table,
1169         .supports_autosuspend = 1,
1170 };
1171
1172 static int __init btusb_init(void)
1173 {
1174         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1175
1176         return usb_register(&btusb_driver);
1177 }
1178
1179 static void __exit btusb_exit(void)
1180 {
1181         usb_deregister(&btusb_driver);
1182 }
1183
1184 module_init(btusb_init);
1185 module_exit(btusb_exit);
1186
1187 module_param(ignore_dga, bool, 0644);
1188 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1189
1190 module_param(ignore_csr, bool, 0644);
1191 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1192
1193 module_param(ignore_sniffer, bool, 0644);
1194 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1195
1196 module_param(disable_scofix, bool, 0644);
1197 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1198
1199 module_param(force_scofix, bool, 0644);
1200 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1201
1202 module_param(reset, bool, 0644);
1203 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1204
1205 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1206 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1207 MODULE_VERSION(VERSION);
1208 MODULE_LICENSE("GPL");