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 CONFIG_BT_HCIBTUSB_DEBUG
  39 #ifndef CONFIG_BT_HCIBTUSB_DEBUG
  40 #undef  BT_DBG
  41 #define BT_DBG(D...)
  42 #endif
  43
  44 #define VERSION "0.3"
  45
  46 static int ignore_dga;
  47 static int ignore_csr;
  48 static int ignore_sniffer;
  49 static int disable_scofix;
  50 static int force_scofix;
  51 static int reset;
  52
  53 static struct usb_driver btusb_driver;
  54
  55 #define BTUSB_IGNORE            0x01
  56 #define BTUSB_RESET             0x02
  57 #define BTUSB_DIGIANSWER        0x04
  58 #define BTUSB_CSR               0x08
  59 #define BTUSB_SNIFFER           0x10
  60 #define BTUSB_BCM92035          0x20
  61 #define BTUSB_BROKEN_ISOC       0x40
  62 #define BTUSB_WRONG_SCO_MTU     0x80
  63
  64 static struct usb_device_id btusb_table[] = {
  65         /* Generic Bluetooth USB device */
  66         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  67
  68         /* AVM BlueFRITZ! USB v2.0 */
  69         { USB_DEVICE(0x057c, 0x3800) },
  70
  71         /* Bluetooth Ultraport Module from IBM */
  72         { USB_DEVICE(0x04bf, 0x030a) },
  73
  74         /* ALPS Modules with non-standard id */
  75         { USB_DEVICE(0x044e, 0x3001) },
  76         { USB_DEVICE(0x044e, 0x3002) },
  77
  78         /* Ericsson with non-standard id */
  79         { USB_DEVICE(0x0bdb, 0x1002) },
  80
  81         /* Canyon CN-BTU1 with HID interfaces */
  82         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_RESET },
  83
  84         { }     /* Terminating entry */
  85 };
  86
  87 MODULE_DEVICE_TABLE(usb, btusb_table);
  88
  89 static struct usb_device_id blacklist_table[] = {
  90         /* CSR BlueCore devices */
  91         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
  92
  93         /* Broadcom BCM2033 without firmware */
  94         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
  95
  96         /* Broadcom BCM2035 */
  97         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
  98         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
  99
 100         /* Broadcom BCM2045 */
 101         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 102         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 103
 104         /* Broadcom BCM2046 */
 105         { USB_DEVICE(0x0a5c, 0x2151), .driver_info = BTUSB_RESET },
 106
 107         /* Apple MacBook Pro with Broadcom chip */
 108         { USB_DEVICE(0x05ac, 0x820f), .driver_info = BTUSB_RESET },
 109
 110         /* IBM/Lenovo ThinkPad with Broadcom chip */
 111         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 112         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 113
 114         /* Targus ACB10US */
 115         { USB_DEVICE(0x0a5c, 0x2100), .driver_info = BTUSB_RESET },
 116         { USB_DEVICE(0x0a5c, 0x2154), .driver_info = BTUSB_RESET },
 117
 118         /* ANYCOM Bluetooth USB-200 and USB-250 */
 119         { USB_DEVICE(0x0a5c, 0x2111), .driver_info = BTUSB_RESET },
 120
 121         /* HP laptop with Broadcom chip */
 122         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 123
 124         /* Dell laptop with Broadcom chip */
 125         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 126
 127         /* Dell Wireless 370 */
 128         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 129
 130         /* Dell Wireless 410 */
 131         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 132
 133         /* Microsoft Wireless Transceiver for Bluetooth 2.0 */
 134         { USB_DEVICE(0x045e, 0x009c), .driver_info = BTUSB_RESET },
 135
 136         /* Kensington Bluetooth USB adapter */
 137         { USB_DEVICE(0x047d, 0x105d), .driver_info = BTUSB_RESET },
 138         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 139
 140         /* ISSC Bluetooth Adapter v3.1 */
 141         { USB_DEVICE(0x1131, 0x1001), .driver_info = BTUSB_RESET },
 142
 143         /* RTX Telecom based adapters with buggy SCO support */
 144         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 145         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 146
 147         /* CONWISE Technology based adapters with buggy SCO support */
 148         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 149
 150         /* Belkin F8T012 and F8T013 devices */
 151         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 152         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 153
 154         /* Belkin F8T016 device */
 155         { USB_DEVICE(0x050d, 0x016a), .driver_info = BTUSB_RESET },
 156
 157         /* Digianswer devices */
 158         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 159         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 160
 161         /* CSR BlueCore Bluetooth Sniffer */
 162         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 163
 164         /* Frontline ComProbe Bluetooth Sniffer */
 165         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 166
 167         { }     /* Terminating entry */
 168 };
 169
 170 #define BTUSB_MAX_ISOC_FRAMES   10
 171
 172 #define BTUSB_INTR_RUNNING      0
 173 #define BTUSB_BULK_RUNNING      1
 174 #define BTUSB_ISOC_RUNNING      2
 175
 176 struct btusb_data {
 177         struct hci_dev       *hdev;
 178         struct usb_device    *udev;
 179         struct usb_interface *intf;
 180         struct usb_interface *isoc;
 181
 182         spinlock_t lock;
 183
 184         unsigned long flags;
 185
 186         struct work_struct work;
 187
 188         struct usb_anchor tx_anchor;
 189         struct usb_anchor intr_anchor;
 190         struct usb_anchor bulk_anchor;
 191         struct usb_anchor isoc_anchor;
 192
 193         struct usb_endpoint_descriptor *intr_ep;
 194         struct usb_endpoint_descriptor *bulk_tx_ep;
 195         struct usb_endpoint_descriptor *bulk_rx_ep;
 196         struct usb_endpoint_descriptor *isoc_tx_ep;
 197         struct usb_endpoint_descriptor *isoc_rx_ep;
 198
 199         int isoc_altsetting;
 200 };
 201
 202 static void btusb_intr_complete(struct urb *urb)
 203 {
 204         struct hci_dev *hdev = urb->context;
 205         struct btusb_data *data = hdev->driver_data;
 206         int err;
 207
 208         BT_DBG("%s urb %p status %d count %d", hdev->name,
 209                                         urb, urb->status, urb->actual_length);
 210
 211         if (!test_bit(HCI_RUNNING, &hdev->flags))
 212                 return;
 213
 214         if (urb->status == 0) {
 215                 hdev->stat.byte_rx += urb->actual_length;
 216
 217                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 218                                                 urb->transfer_buffer,
 219                                                 urb->actual_length) < 0) {
 220                         BT_ERR("%s corrupted event packet", hdev->name);
 221                         hdev->stat.err_rx++;
 222                 }
 223         }
 224
 225         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 226                 return;
 227
 228         usb_anchor_urb(urb, &data->intr_anchor);
 229
 230         err = usb_submit_urb(urb, GFP_ATOMIC);
 231         if (err < 0) {
 232                 BT_ERR("%s urb %p failed to resubmit (%d)",
 233                                                 hdev->name, urb, -err);
 234                 usb_unanchor_urb(urb);
 235         }
 236 }
 237
 238 static int btusb_submit_intr_urb(struct hci_dev *hdev)
 239 {
 240         struct btusb_data *data = hdev->driver_data;
 241         struct urb *urb;
 242         unsigned char *buf;
 243         unsigned int pipe;
 244         int err, size;
 245
 246         BT_DBG("%s", hdev->name);
 247
 248         if (!data->intr_ep)
 249                 return -ENODEV;
 250
 251         urb = usb_alloc_urb(0, GFP_ATOMIC);
 252         if (!urb)
 253                 return -ENOMEM;
 254
 255         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 256
 257         buf = kmalloc(size, GFP_ATOMIC);
 258         if (!buf) {
 259                 usb_free_urb(urb);
 260                 return -ENOMEM;
 261         }
 262
 263         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 264
 265         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 266                                                 btusb_intr_complete, hdev,
 267                                                 data->intr_ep->bInterval);
 268
 269         urb->transfer_flags |= URB_FREE_BUFFER;
 270
 271         usb_anchor_urb(urb, &data->intr_anchor);
 272
 273         err = usb_submit_urb(urb, GFP_ATOMIC);
 274         if (err < 0) {
 275                 BT_ERR("%s urb %p submission failed (%d)",
 276                                                 hdev->name, urb, -err);
 277                 usb_unanchor_urb(urb);
 278         }
 279
 280         usb_free_urb(urb);
 281
 282         return err;
 283 }
 284
 285 static void btusb_bulk_complete(struct urb *urb)
 286 {
 287         struct hci_dev *hdev = urb->context;
 288         struct btusb_data *data = hdev->driver_data;
 289         int err;
 290
 291         BT_DBG("%s urb %p status %d count %d", hdev->name,
 292                                         urb, urb->status, urb->actual_length);
 293
 294         if (!test_bit(HCI_RUNNING, &hdev->flags))
 295                 return;
 296
 297         if (urb->status == 0) {
 298                 hdev->stat.byte_rx += urb->actual_length;
 299
 300                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 301                                                 urb->transfer_buffer,
 302                                                 urb->actual_length) < 0) {
 303                         BT_ERR("%s corrupted ACL packet", hdev->name);
 304                         hdev->stat.err_rx++;
 305                 }
 306         }
 307
 308         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 309                 return;
 310
 311         usb_anchor_urb(urb, &data->bulk_anchor);
 312
 313         err = usb_submit_urb(urb, GFP_ATOMIC);
 314         if (err < 0) {
 315                 BT_ERR("%s urb %p failed to resubmit (%d)",
 316                                                 hdev->name, urb, -err);
 317                 usb_unanchor_urb(urb);
 318         }
 319 }
 320
 321 static int btusb_submit_bulk_urb(struct hci_dev *hdev)
 322 {
 323         struct btusb_data *data = hdev->driver_data;
 324         struct urb *urb;
 325         unsigned char *buf;
 326         unsigned int pipe;
 327         int err, size;
 328
 329         BT_DBG("%s", hdev->name);
 330
 331         if (!data->bulk_rx_ep)
 332                 return -ENODEV;
 333
 334         urb = usb_alloc_urb(0, GFP_KERNEL);
 335         if (!urb)
 336                 return -ENOMEM;
 337
 338         size = le16_to_cpu(data->bulk_rx_ep->wMaxPacketSize);
 339
 340         buf = kmalloc(size, GFP_KERNEL);
 341         if (!buf) {
 342                 usb_free_urb(urb);
 343                 return -ENOMEM;
 344         }
 345
 346         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 347
 348         usb_fill_bulk_urb(urb, data->udev, pipe,
 349                                         buf, size, btusb_bulk_complete, hdev);
 350
 351         urb->transfer_flags |= URB_FREE_BUFFER;
 352
 353         usb_anchor_urb(urb, &data->bulk_anchor);
 354
 355         err = usb_submit_urb(urb, GFP_KERNEL);
 356         if (err < 0) {
 357                 BT_ERR("%s urb %p submission failed (%d)",
 358                                                 hdev->name, urb, -err);
 359                 usb_unanchor_urb(urb);
 360         }
 361
 362         usb_free_urb(urb);
 363
 364         return err;
 365 }
 366
 367 static void btusb_isoc_complete(struct urb *urb)
 368 {
 369         struct hci_dev *hdev = urb->context;
 370         struct btusb_data *data = hdev->driver_data;
 371         int i, err;
 372
 373         BT_DBG("%s urb %p status %d count %d", hdev->name,
 374                                         urb, urb->status, urb->actual_length);
 375
 376         if (!test_bit(HCI_RUNNING, &hdev->flags))
 377                 return;
 378
 379         if (urb->status == 0) {
 380                 for (i = 0; i < urb->number_of_packets; i++) {
 381                         unsigned int offset = urb->iso_frame_desc[i].offset;
 382                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 383
 384                         if (urb->iso_frame_desc[i].status)
 385                                 continue;
 386
 387                         hdev->stat.byte_rx += length;
 388
 389                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 390                                                 urb->transfer_buffer + offset,
 391                                                                 length) < 0) {
 392                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 393                                 hdev->stat.err_rx++;
 394                         }
 395                 }
 396         }
 397
 398         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 399                 return;
 400
 401         usb_anchor_urb(urb, &data->isoc_anchor);
 402
 403         err = usb_submit_urb(urb, GFP_ATOMIC);
 404         if (err < 0) {
 405                 BT_ERR("%s urb %p failed to resubmit (%d)",
 406                                                 hdev->name, urb, -err);
 407                 usb_unanchor_urb(urb);
 408         }
 409 }
 410
 411 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 412 {
 413         int i, offset = 0;
 414
 415         BT_DBG("len %d mtu %d", len, mtu);
 416
 417         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 418                                         i++, offset += mtu, len -= mtu) {
 419                 urb->iso_frame_desc[i].offset = offset;
 420                 urb->iso_frame_desc[i].length = mtu;
 421         }
 422
 423         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 424                 urb->iso_frame_desc[i].offset = offset;
 425                 urb->iso_frame_desc[i].length = len;
 426                 i++;
 427         }
 428
 429         urb->number_of_packets = i;
 430 }
 431
 432 static int btusb_submit_isoc_urb(struct hci_dev *hdev)
 433 {
 434         struct btusb_data *data = hdev->driver_data;
 435         struct urb *urb;
 436         unsigned char *buf;
 437         unsigned int pipe;
 438         int err, size;
 439
 440         BT_DBG("%s", hdev->name);
 441
 442         if (!data->isoc_rx_ep)
 443                 return -ENODEV;
 444
 445         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
 446         if (!urb)
 447                 return -ENOMEM;
 448
 449         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 450                                                 BTUSB_MAX_ISOC_FRAMES;
 451
 452         buf = kmalloc(size, GFP_KERNEL);
 453         if (!buf) {
 454                 usb_free_urb(urb);
 455                 return -ENOMEM;
 456         }
 457
 458         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 459
 460         urb->dev      = data->udev;
 461         urb->pipe     = pipe;
 462         urb->context  = hdev;
 463         urb->complete = btusb_isoc_complete;
 464         urb->interval = data->isoc_rx_ep->bInterval;
 465
 466         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 467         urb->transfer_buffer = buf;
 468         urb->transfer_buffer_length = size;
 469
 470         __fill_isoc_descriptor(urb, size,
 471                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 472
 473         usb_anchor_urb(urb, &data->isoc_anchor);
 474
 475         err = usb_submit_urb(urb, GFP_KERNEL);
 476         if (err < 0) {
 477                 BT_ERR("%s urb %p submission failed (%d)",
 478                                                 hdev->name, urb, -err);
 479                 usb_unanchor_urb(urb);
 480         }
 481
 482         usb_free_urb(urb);
 483
 484         return err;
 485 }
 486
 487 static void btusb_tx_complete(struct urb *urb)
 488 {
 489         struct sk_buff *skb = urb->context;
 490         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 491
 492         BT_DBG("%s urb %p status %d count %d", hdev->name,
 493                                         urb, urb->status, urb->actual_length);
 494
 495         if (!test_bit(HCI_RUNNING, &hdev->flags))
 496                 goto done;
 497
 498         if (!urb->status)
 499                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 500         else
 501                 hdev->stat.err_tx++;
 502
 503 done:
 504         kfree(urb->setup_packet);
 505
 506         kfree_skb(skb);
 507 }
 508
 509 static int btusb_open(struct hci_dev *hdev)
 510 {
 511         struct btusb_data *data = hdev->driver_data;
 512         int err;
 513
 514         BT_DBG("%s", hdev->name);
 515
 516         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 517                 return 0;
 518
 519         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 520                 return 0;
 521
 522         err = btusb_submit_intr_urb(hdev);
 523         if (err < 0) {
 524                 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 525                 clear_bit(HCI_RUNNING, &hdev->flags);
 526         }
 527
 528         return err;
 529 }
 530
 531 static int btusb_close(struct hci_dev *hdev)
 532 {
 533         struct btusb_data *data = hdev->driver_data;
 534
 535         BT_DBG("%s", hdev->name);
 536
 537         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 538                 return 0;
 539
 540         cancel_work_sync(&data->work);
 541
 542         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 543         usb_kill_anchored_urbs(&data->isoc_anchor);
 544
 545         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 546         usb_kill_anchored_urbs(&data->bulk_anchor);
 547
 548         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 549         usb_kill_anchored_urbs(&data->intr_anchor);
 550
 551         return 0;
 552 }
 553
 554 static int btusb_flush(struct hci_dev *hdev)
 555 {
 556         struct btusb_data *data = hdev->driver_data;
 557
 558         BT_DBG("%s", hdev->name);
 559
 560         usb_kill_anchored_urbs(&data->tx_anchor);
 561
 562         return 0;
 563 }
 564
 565 static int btusb_send_frame(struct sk_buff *skb)
 566 {
 567         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 568         struct btusb_data *data = hdev->driver_data;
 569         struct usb_ctrlrequest *dr;
 570         struct urb *urb;
 571         unsigned int pipe;
 572         int err;
 573
 574         BT_DBG("%s", hdev->name);
 575
 576         if (!test_bit(HCI_RUNNING, &hdev->flags))
 577                 return -EBUSY;
 578
 579         switch (bt_cb(skb)->pkt_type) {
 580         case HCI_COMMAND_PKT:
 581                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 582                 if (!urb)
 583                         return -ENOMEM;
 584
 585                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 586                 if (!dr) {
 587                         usb_free_urb(urb);
 588                         return -ENOMEM;
 589                 }
 590
 591                 dr->bRequestType = USB_TYPE_CLASS;
 592                 dr->bRequest     = 0;
 593                 dr->wIndex       = 0;
 594                 dr->wValue       = 0;
 595                 dr->wLength      = __cpu_to_le16(skb->len);
 596
 597                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 598
 599                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 600                                 skb->data, skb->len, btusb_tx_complete, skb);
 601
 602                 hdev->stat.cmd_tx++;
 603                 break;
 604
 605         case HCI_ACLDATA_PKT:
 606                 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
 607                         return -ENODEV;
 608
 609                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 610                 if (!urb)
 611                         return -ENOMEM;
 612
 613                 pipe = usb_sndbulkpipe(data->udev,
 614                                         data->bulk_tx_ep->bEndpointAddress);
 615
 616                 usb_fill_bulk_urb(urb, data->udev, pipe,
 617                                 skb->data, skb->len, btusb_tx_complete, skb);
 618
 619                 hdev->stat.acl_tx++;
 620                 break;
 621
 622         case HCI_SCODATA_PKT:
 623                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 624                         return -ENODEV;
 625
 626                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 627                 if (!urb)
 628                         return -ENOMEM;
 629
 630                 pipe = usb_sndisocpipe(data->udev,
 631                                         data->isoc_tx_ep->bEndpointAddress);
 632
 633                 urb->dev      = data->udev;
 634                 urb->pipe     = pipe;
 635                 urb->context  = skb;
 636                 urb->complete = btusb_tx_complete;
 637                 urb->interval = data->isoc_tx_ep->bInterval;
 638
 639                 urb->transfer_flags  = URB_ISO_ASAP;
 640                 urb->transfer_buffer = skb->data;
 641                 urb->transfer_buffer_length = skb->len;
 642
 643                 __fill_isoc_descriptor(urb, skb->len,
 644                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 645
 646                 hdev->stat.sco_tx++;
 647                 break;
 648
 649         default:
 650                 return -EILSEQ;
 651         }
 652
 653         usb_anchor_urb(urb, &data->tx_anchor);
 654
 655         err = usb_submit_urb(urb, GFP_ATOMIC);
 656         if (err < 0) {
 657                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 658                 kfree(urb->setup_packet);
 659                 usb_unanchor_urb(urb);
 660         }
 661
 662         usb_free_urb(urb);
 663
 664         return err;
 665 }
 666
 667 static void btusb_destruct(struct hci_dev *hdev)
 668 {
 669         struct btusb_data *data = hdev->driver_data;
 670
 671         BT_DBG("%s", hdev->name);
 672
 673         kfree(data);
 674 }
 675
 676 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 677 {
 678         struct btusb_data *data = hdev->driver_data;
 679
 680         BT_DBG("%s evt %d", hdev->name, evt);
 681
 682         if (evt == HCI_NOTIFY_CONN_ADD || evt == HCI_NOTIFY_CONN_DEL)
 683                 schedule_work(&data->work);
 684 }
 685
 686 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 687 {
 688         struct btusb_data *data = hdev->driver_data;
 689         struct usb_interface *intf = data->isoc;
 690         struct usb_endpoint_descriptor *ep_desc;
 691         int i, err;
 692
 693         if (!data->isoc)
 694                 return -ENODEV;
 695
 696         err = usb_set_interface(data->udev, 1, altsetting);
 697         if (err < 0) {
 698                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 699                 return err;
 700         }
 701
 702         data->isoc_altsetting = altsetting;
 703
 704         data->isoc_tx_ep = NULL;
 705         data->isoc_rx_ep = NULL;
 706
 707         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 708                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 709
 710                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 711                         data->isoc_tx_ep = ep_desc;
 712                         continue;
 713                 }
 714
 715                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 716                         data->isoc_rx_ep = ep_desc;
 717                         continue;
 718                 }
 719         }
 720
 721         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 722                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 723                 return -ENODEV;
 724         }
 725
 726         return 0;
 727 }
 728
 729 static void btusb_work(struct work_struct *work)
 730 {
 731         struct btusb_data *data = container_of(work, struct btusb_data, work);
 732         struct hci_dev *hdev = data->hdev;
 733
 734         if (hdev->conn_hash.acl_num > 0) {
 735                 if (!test_and_set_bit(BTUSB_BULK_RUNNING, &data->flags)) {
 736                         if (btusb_submit_bulk_urb(hdev) < 0)
 737                                 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 738                         else
 739                                 btusb_submit_bulk_urb(hdev);
 740                 }
 741         } else {
 742                 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 743                 usb_kill_anchored_urbs(&data->bulk_anchor);
 744         }
 745
 746         if (hdev->conn_hash.sco_num > 0) {
 747                 if (data->isoc_altsetting != 2) {
 748                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 749                         usb_kill_anchored_urbs(&data->isoc_anchor);
 750
 751                         if (__set_isoc_interface(hdev, 2) < 0)
 752                                 return;
 753                 }
 754
 755                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 756                         if (btusb_submit_isoc_urb(hdev) < 0)
 757                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 758                         else
 759                                 btusb_submit_isoc_urb(hdev);
 760                 }
 761         } else {
 762                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 763                 usb_kill_anchored_urbs(&data->isoc_anchor);
 764
 765                 __set_isoc_interface(hdev, 0);
 766         }
 767 }
 768
 769 static int btusb_probe(struct usb_interface *intf,
 770                                 const struct usb_device_id *id)
 771 {
 772         struct usb_endpoint_descriptor *ep_desc;
 773         struct btusb_data *data;
 774         struct hci_dev *hdev;
 775         int i, err;
 776
 777         BT_DBG("intf %p id %p", intf, id);
 778
 779         /* interface numbers are hardcoded in the spec */
 780         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 781                 return -ENODEV;
 782
 783         if (!id->driver_info) {
 784                 const struct usb_device_id *match;
 785                 match = usb_match_id(intf, blacklist_table);
 786                 if (match)
 787                         id = match;
 788         }
 789
 790         if (id->driver_info == BTUSB_IGNORE)
 791                 return -ENODEV;
 792
 793         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 794                 return -ENODEV;
 795
 796         if (ignore_csr && id->driver_info & BTUSB_CSR)
 797                 return -ENODEV;
 798
 799         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 800                 return -ENODEV;
 801
 802         data = kzalloc(sizeof(*data), GFP_KERNEL);
 803         if (!data)
 804                 return -ENOMEM;
 805
 806         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 807                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 808
 809                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 810                         data->intr_ep = ep_desc;
 811                         continue;
 812                 }
 813
 814                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 815                         data->bulk_tx_ep = ep_desc;
 816                         continue;
 817                 }
 818
 819                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 820                         data->bulk_rx_ep = ep_desc;
 821                         continue;
 822                 }
 823         }
 824
 825         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 826                 kfree(data);
 827                 return -ENODEV;
 828         }
 829
 830         data->udev = interface_to_usbdev(intf);
 831         data->intf = intf;
 832
 833         spin_lock_init(&data->lock);
 834
 835         INIT_WORK(&data->work, btusb_work);
 836
 837         init_usb_anchor(&data->tx_anchor);
 838         init_usb_anchor(&data->intr_anchor);
 839         init_usb_anchor(&data->bulk_anchor);
 840         init_usb_anchor(&data->isoc_anchor);
 841
 842         hdev = hci_alloc_dev();
 843         if (!hdev) {
 844                 kfree(data);
 845                 return -ENOMEM;
 846         }
 847
 848         hdev->type = HCI_USB;
 849         hdev->driver_data = data;
 850
 851         data->hdev = hdev;
 852
 853         SET_HCIDEV_DEV(hdev, &intf->dev);
 854
 855         hdev->open     = btusb_open;
 856         hdev->close    = btusb_close;
 857         hdev->flush    = btusb_flush;
 858         hdev->send     = btusb_send_frame;
 859         hdev->destruct = btusb_destruct;
 860         hdev->notify   = btusb_notify;
 861
 862         hdev->owner = THIS_MODULE;
 863
 864         /* interface numbers are hardcoded in the spec */
 865         data->isoc = usb_ifnum_to_if(data->udev, 1);
 866
 867         if (reset || id->driver_info & BTUSB_RESET)
 868                 set_bit(HCI_QUIRK_RESET_ON_INIT, &hdev->quirks);
 869
 870         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
 871                 if (!disable_scofix)
 872                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
 873         }
 874
 875         if (id->driver_info & BTUSB_BROKEN_ISOC)
 876                 data->isoc = NULL;
 877
 878         if (id->driver_info & BTUSB_SNIFFER) {
 879                 struct usb_device *udev = data->udev;
 880
 881                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
 882                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
 883
 884                 data->isoc = NULL;
 885         }
 886
 887         if (id->driver_info & BTUSB_BCM92035) {
 888                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
 889                 struct sk_buff *skb;
 890
 891                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
 892                 if (skb) {
 893                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
 894                         skb_queue_tail(&hdev->driver_init, skb);
 895                 }
 896         }
 897
 898         if (data->isoc) {
 899                 err = usb_driver_claim_interface(&btusb_driver,
 900                                                         data->isoc, data);
 901                 if (err < 0) {
 902                         hci_free_dev(hdev);
 903                         kfree(data);
 904                         return err;
 905                 }
 906         }
 907
 908         err = hci_register_dev(hdev);
 909         if (err < 0) {
 910                 hci_free_dev(hdev);
 911                 kfree(data);
 912                 return err;
 913         }
 914
 915         usb_set_intfdata(intf, data);
 916
 917         return 0;
 918 }
 919
 920 static void btusb_disconnect(struct usb_interface *intf)
 921 {
 922         struct btusb_data *data = usb_get_intfdata(intf);
 923         struct hci_dev *hdev;
 924
 925         BT_DBG("intf %p", intf);
 926
 927         if (!data)
 928                 return;
 929
 930         hdev = data->hdev;
 931
 932         __hci_dev_hold(hdev);
 933
 934         usb_set_intfdata(data->intf, NULL);
 935
 936         if (data->isoc)
 937                 usb_set_intfdata(data->isoc, NULL);
 938
 939         hci_unregister_dev(hdev);
 940
 941         if (intf == data->isoc)
 942                 usb_driver_release_interface(&btusb_driver, data->intf);
 943         else if (data->isoc)
 944                 usb_driver_release_interface(&btusb_driver, data->isoc);
 945
 946         __hci_dev_put(hdev);
 947
 948         hci_free_dev(hdev);
 949 }
 950
 951 static struct usb_driver btusb_driver = {
 952         .name           = "btusb",
 953         .probe          = btusb_probe,
 954         .disconnect     = btusb_disconnect,
 955         .id_table       = btusb_table,
 956 };
 957
 958 static int __init btusb_init(void)
 959 {
 960         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
 961
 962         return usb_register(&btusb_driver);
 963 }
 964
 965 static void __exit btusb_exit(void)
 966 {
 967         usb_deregister(&btusb_driver);
 968 }
 969
 970 module_init(btusb_init);
 971 module_exit(btusb_exit);
 972
 973 module_param(ignore_dga, bool, 0644);
 974 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
 975
 976 module_param(ignore_csr, bool, 0644);
 977 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
 978
 979 module_param(ignore_sniffer, bool, 0644);
 980 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
 981
 982 module_param(disable_scofix, bool, 0644);
 983 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
 984
 985 module_param(force_scofix, bool, 0644);
 986 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
 987
 988 module_param(reset, bool, 0644);
 989 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
 990
 991 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
 992 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
 993 MODULE_VERSION(VERSION);
 994 MODULE_LICENSE("GPL");