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, 0x2146), .driver_info = BTUSB_RESET },
 106         { USB_DEVICE(0x0a5c, 0x2151), .driver_info = BTUSB_RESET },
 107
 108         /* Apple MacBook Pro with Broadcom chip */
 109         { USB_DEVICE(0x05ac, 0x820f), .driver_info = BTUSB_RESET },
 110
 111         /* IBM/Lenovo ThinkPad with Broadcom chip */
 112         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 113         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 114
 115         /* Targus ACB10US */
 116         { USB_DEVICE(0x0a5c, 0x2100), .driver_info = BTUSB_RESET },
 117         { USB_DEVICE(0x0a5c, 0x2154), .driver_info = BTUSB_RESET },
 118
 119         /* ANYCOM Bluetooth USB-200 and USB-250 */
 120         { USB_DEVICE(0x0a5c, 0x2111), .driver_info = BTUSB_RESET },
 121
 122         /* HP laptop with Broadcom chip */
 123         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 124
 125         /* Dell laptop with Broadcom chip */
 126         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 127
 128         /* Dell Wireless 370 */
 129         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 130
 131         /* Dell Wireless 410 */
 132         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 133
 134         /* Microsoft Wireless Transceiver for Bluetooth 2.0 */
 135         { USB_DEVICE(0x045e, 0x009c), .driver_info = BTUSB_RESET },
 136
 137         /* Kensington Bluetooth USB adapter */
 138         { USB_DEVICE(0x047d, 0x105d), .driver_info = BTUSB_RESET },
 139         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 140
 141         /* ISSC Bluetooth Adapter v3.1 */
 142         { USB_DEVICE(0x1131, 0x1001), .driver_info = BTUSB_RESET },
 143
 144         /* RTX Telecom based adapters with buggy SCO support */
 145         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 146         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 147
 148         /* CONWISE Technology based adapters with buggy SCO support */
 149         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 150
 151         /* Belkin F8T012 and F8T013 devices */
 152         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 153         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_RESET | BTUSB_WRONG_SCO_MTU },
 154
 155         /* Belkin F8T016 device */
 156         { USB_DEVICE(0x050d, 0x016a), .driver_info = BTUSB_RESET },
 157
 158         /* Digianswer devices */
 159         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 160         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 161
 162         /* CSR BlueCore Bluetooth Sniffer */
 163         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 164
 165         /* Frontline ComProbe Bluetooth Sniffer */
 166         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 167
 168         { }     /* Terminating entry */
 169 };
 170
 171 #define BTUSB_MAX_ISOC_FRAMES   10
 172
 173 #define BTUSB_INTR_RUNNING      0
 174 #define BTUSB_BULK_RUNNING      1
 175 #define BTUSB_ISOC_RUNNING      2
 176
 177 struct btusb_data {
 178         struct hci_dev       *hdev;
 179         struct usb_device    *udev;
 180         struct usb_interface *intf;
 181         struct usb_interface *isoc;
 182
 183         spinlock_t lock;
 184
 185         unsigned long flags;
 186
 187         struct work_struct work;
 188
 189         struct usb_anchor tx_anchor;
 190         struct usb_anchor intr_anchor;
 191         struct usb_anchor bulk_anchor;
 192         struct usb_anchor isoc_anchor;
 193
 194         struct usb_endpoint_descriptor *intr_ep;
 195         struct usb_endpoint_descriptor *bulk_tx_ep;
 196         struct usb_endpoint_descriptor *bulk_rx_ep;
 197         struct usb_endpoint_descriptor *isoc_tx_ep;
 198         struct usb_endpoint_descriptor *isoc_rx_ep;
 199
 200         int isoc_altsetting;
 201         int suspend_count;
 202 };
 203
 204 static void btusb_intr_complete(struct urb *urb)
 205 {
 206         struct hci_dev *hdev = urb->context;
 207         struct btusb_data *data = hdev->driver_data;
 208         int err;
 209
 210         BT_DBG("%s urb %p status %d count %d", hdev->name,
 211                                         urb, urb->status, urb->actual_length);
 212
 213         if (!test_bit(HCI_RUNNING, &hdev->flags))
 214                 return;
 215
 216         if (urb->status == 0) {
 217                 hdev->stat.byte_rx += urb->actual_length;
 218
 219                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 220                                                 urb->transfer_buffer,
 221                                                 urb->actual_length) < 0) {
 222                         BT_ERR("%s corrupted event packet", hdev->name);
 223                         hdev->stat.err_rx++;
 224                 }
 225         }
 226
 227         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 228                 return;
 229
 230         usb_anchor_urb(urb, &data->intr_anchor);
 231
 232         err = usb_submit_urb(urb, GFP_ATOMIC);
 233         if (err < 0) {
 234                 BT_ERR("%s urb %p failed to resubmit (%d)",
 235                                                 hdev->name, urb, -err);
 236                 usb_unanchor_urb(urb);
 237         }
 238 }
 239
 240 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 241 {
 242         struct btusb_data *data = hdev->driver_data;
 243         struct urb *urb;
 244         unsigned char *buf;
 245         unsigned int pipe;
 246         int err, size;
 247
 248         BT_DBG("%s", hdev->name);
 249
 250         if (!data->intr_ep)
 251                 return -ENODEV;
 252
 253         urb = usb_alloc_urb(0, mem_flags);
 254         if (!urb)
 255                 return -ENOMEM;
 256
 257         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 258
 259         buf = kmalloc(size, mem_flags);
 260         if (!buf) {
 261                 usb_free_urb(urb);
 262                 return -ENOMEM;
 263         }
 264
 265         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 266
 267         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 268                                                 btusb_intr_complete, hdev,
 269                                                 data->intr_ep->bInterval);
 270
 271         urb->transfer_flags |= URB_FREE_BUFFER;
 272
 273         usb_anchor_urb(urb, &data->intr_anchor);
 274
 275         err = usb_submit_urb(urb, mem_flags);
 276         if (err < 0) {
 277                 BT_ERR("%s urb %p submission failed (%d)",
 278                                                 hdev->name, urb, -err);
 279                 usb_unanchor_urb(urb);
 280         }
 281
 282         usb_free_urb(urb);
 283
 284         return err;
 285 }
 286
 287 static void btusb_bulk_complete(struct urb *urb)
 288 {
 289         struct hci_dev *hdev = urb->context;
 290         struct btusb_data *data = hdev->driver_data;
 291         int err;
 292
 293         BT_DBG("%s urb %p status %d count %d", hdev->name,
 294                                         urb, urb->status, urb->actual_length);
 295
 296         if (!test_bit(HCI_RUNNING, &hdev->flags))
 297                 return;
 298
 299         if (urb->status == 0) {
 300                 hdev->stat.byte_rx += urb->actual_length;
 301
 302                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 303                                                 urb->transfer_buffer,
 304                                                 urb->actual_length) < 0) {
 305                         BT_ERR("%s corrupted ACL packet", hdev->name);
 306                         hdev->stat.err_rx++;
 307                 }
 308         }
 309
 310         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 311                 return;
 312
 313         usb_anchor_urb(urb, &data->bulk_anchor);
 314
 315         err = usb_submit_urb(urb, GFP_ATOMIC);
 316         if (err < 0) {
 317                 BT_ERR("%s urb %p failed to resubmit (%d)",
 318                                                 hdev->name, urb, -err);
 319                 usb_unanchor_urb(urb);
 320         }
 321 }
 322
 323 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 324 {
 325         struct btusb_data *data = hdev->driver_data;
 326         struct urb *urb;
 327         unsigned char *buf;
 328         unsigned int pipe;
 329         int err, size;
 330
 331         BT_DBG("%s", hdev->name);
 332
 333         if (!data->bulk_rx_ep)
 334                 return -ENODEV;
 335
 336         urb = usb_alloc_urb(0, mem_flags);
 337         if (!urb)
 338                 return -ENOMEM;
 339
 340         size = le16_to_cpu(data->bulk_rx_ep->wMaxPacketSize);
 341
 342         buf = kmalloc(size, mem_flags);
 343         if (!buf) {
 344                 usb_free_urb(urb);
 345                 return -ENOMEM;
 346         }
 347
 348         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 349
 350         usb_fill_bulk_urb(urb, data->udev, pipe,
 351                                         buf, size, btusb_bulk_complete, hdev);
 352
 353         urb->transfer_flags |= URB_FREE_BUFFER;
 354
 355         usb_anchor_urb(urb, &data->bulk_anchor);
 356
 357         err = usb_submit_urb(urb, mem_flags);
 358         if (err < 0) {
 359                 BT_ERR("%s urb %p submission failed (%d)",
 360                                                 hdev->name, urb, -err);
 361                 usb_unanchor_urb(urb);
 362         }
 363
 364         usb_free_urb(urb);
 365
 366         return err;
 367 }
 368
 369 static void btusb_isoc_complete(struct urb *urb)
 370 {
 371         struct hci_dev *hdev = urb->context;
 372         struct btusb_data *data = hdev->driver_data;
 373         int i, err;
 374
 375         BT_DBG("%s urb %p status %d count %d", hdev->name,
 376                                         urb, urb->status, urb->actual_length);
 377
 378         if (!test_bit(HCI_RUNNING, &hdev->flags))
 379                 return;
 380
 381         if (urb->status == 0) {
 382                 for (i = 0; i < urb->number_of_packets; i++) {
 383                         unsigned int offset = urb->iso_frame_desc[i].offset;
 384                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 385
 386                         if (urb->iso_frame_desc[i].status)
 387                                 continue;
 388
 389                         hdev->stat.byte_rx += length;
 390
 391                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 392                                                 urb->transfer_buffer + offset,
 393                                                                 length) < 0) {
 394                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 395                                 hdev->stat.err_rx++;
 396                         }
 397                 }
 398         }
 399
 400         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 401                 return;
 402
 403         usb_anchor_urb(urb, &data->isoc_anchor);
 404
 405         err = usb_submit_urb(urb, GFP_ATOMIC);
 406         if (err < 0) {
 407                 BT_ERR("%s urb %p failed to resubmit (%d)",
 408                                                 hdev->name, urb, -err);
 409                 usb_unanchor_urb(urb);
 410         }
 411 }
 412
 413 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 414 {
 415         int i, offset = 0;
 416
 417         BT_DBG("len %d mtu %d", len, mtu);
 418
 419         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 420                                         i++, offset += mtu, len -= mtu) {
 421                 urb->iso_frame_desc[i].offset = offset;
 422                 urb->iso_frame_desc[i].length = mtu;
 423         }
 424
 425         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 426                 urb->iso_frame_desc[i].offset = offset;
 427                 urb->iso_frame_desc[i].length = len;
 428                 i++;
 429         }
 430
 431         urb->number_of_packets = i;
 432 }
 433
 434 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 435 {
 436         struct btusb_data *data = hdev->driver_data;
 437         struct urb *urb;
 438         unsigned char *buf;
 439         unsigned int pipe;
 440         int err, size;
 441
 442         BT_DBG("%s", hdev->name);
 443
 444         if (!data->isoc_rx_ep)
 445                 return -ENODEV;
 446
 447         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 448         if (!urb)
 449                 return -ENOMEM;
 450
 451         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 452                                                 BTUSB_MAX_ISOC_FRAMES;
 453
 454         buf = kmalloc(size, mem_flags);
 455         if (!buf) {
 456                 usb_free_urb(urb);
 457                 return -ENOMEM;
 458         }
 459
 460         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 461
 462         urb->dev      = data->udev;
 463         urb->pipe     = pipe;
 464         urb->context  = hdev;
 465         urb->complete = btusb_isoc_complete;
 466         urb->interval = data->isoc_rx_ep->bInterval;
 467
 468         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 469         urb->transfer_buffer = buf;
 470         urb->transfer_buffer_length = size;
 471
 472         __fill_isoc_descriptor(urb, size,
 473                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 474
 475         usb_anchor_urb(urb, &data->isoc_anchor);
 476
 477         err = usb_submit_urb(urb, mem_flags);
 478         if (err < 0) {
 479                 BT_ERR("%s urb %p submission failed (%d)",
 480                                                 hdev->name, urb, -err);
 481                 usb_unanchor_urb(urb);
 482         }
 483
 484         usb_free_urb(urb);
 485
 486         return err;
 487 }
 488
 489 static void btusb_tx_complete(struct urb *urb)
 490 {
 491         struct sk_buff *skb = urb->context;
 492         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 493
 494         BT_DBG("%s urb %p status %d count %d", hdev->name,
 495                                         urb, urb->status, urb->actual_length);
 496
 497         if (!test_bit(HCI_RUNNING, &hdev->flags))
 498                 goto done;
 499
 500         if (!urb->status)
 501                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 502         else
 503                 hdev->stat.err_tx++;
 504
 505 done:
 506         kfree(urb->setup_packet);
 507
 508         kfree_skb(skb);
 509 }
 510
 511 static int btusb_open(struct hci_dev *hdev)
 512 {
 513         struct btusb_data *data = hdev->driver_data;
 514         int err;
 515
 516         BT_DBG("%s", hdev->name);
 517
 518         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 519                 return 0;
 520
 521         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 522                 return 0;
 523
 524         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 525         if (err < 0) {
 526                 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 527                 clear_bit(HCI_RUNNING, &hdev->flags);
 528         }
 529
 530         return err;
 531 }
 532
 533 static int btusb_close(struct hci_dev *hdev)
 534 {
 535         struct btusb_data *data = hdev->driver_data;
 536
 537         BT_DBG("%s", hdev->name);
 538
 539         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 540                 return 0;
 541
 542         cancel_work_sync(&data->work);
 543
 544         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 545         usb_kill_anchored_urbs(&data->isoc_anchor);
 546
 547         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 548         usb_kill_anchored_urbs(&data->bulk_anchor);
 549
 550         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 551         usb_kill_anchored_urbs(&data->intr_anchor);
 552
 553         return 0;
 554 }
 555
 556 static int btusb_flush(struct hci_dev *hdev)
 557 {
 558         struct btusb_data *data = hdev->driver_data;
 559
 560         BT_DBG("%s", hdev->name);
 561
 562         usb_kill_anchored_urbs(&data->tx_anchor);
 563
 564         return 0;
 565 }
 566
 567 static int btusb_send_frame(struct sk_buff *skb)
 568 {
 569         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 570         struct btusb_data *data = hdev->driver_data;
 571         struct usb_ctrlrequest *dr;
 572         struct urb *urb;
 573         unsigned int pipe;
 574         int err;
 575
 576         BT_DBG("%s", hdev->name);
 577
 578         if (!test_bit(HCI_RUNNING, &hdev->flags))
 579                 return -EBUSY;
 580
 581         switch (bt_cb(skb)->pkt_type) {
 582         case HCI_COMMAND_PKT:
 583                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 584                 if (!urb)
 585                         return -ENOMEM;
 586
 587                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 588                 if (!dr) {
 589                         usb_free_urb(urb);
 590                         return -ENOMEM;
 591                 }
 592
 593                 dr->bRequestType = USB_TYPE_CLASS;
 594                 dr->bRequest     = 0;
 595                 dr->wIndex       = 0;
 596                 dr->wValue       = 0;
 597                 dr->wLength      = __cpu_to_le16(skb->len);
 598
 599                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 600
 601                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 602                                 skb->data, skb->len, btusb_tx_complete, skb);
 603
 604                 hdev->stat.cmd_tx++;
 605                 break;
 606
 607         case HCI_ACLDATA_PKT:
 608                 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
 609                         return -ENODEV;
 610
 611                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 612                 if (!urb)
 613                         return -ENOMEM;
 614
 615                 pipe = usb_sndbulkpipe(data->udev,
 616                                         data->bulk_tx_ep->bEndpointAddress);
 617
 618                 usb_fill_bulk_urb(urb, data->udev, pipe,
 619                                 skb->data, skb->len, btusb_tx_complete, skb);
 620
 621                 hdev->stat.acl_tx++;
 622                 break;
 623
 624         case HCI_SCODATA_PKT:
 625                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 626                         return -ENODEV;
 627
 628                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 629                 if (!urb)
 630                         return -ENOMEM;
 631
 632                 pipe = usb_sndisocpipe(data->udev,
 633                                         data->isoc_tx_ep->bEndpointAddress);
 634
 635                 urb->dev      = data->udev;
 636                 urb->pipe     = pipe;
 637                 urb->context  = skb;
 638                 urb->complete = btusb_tx_complete;
 639                 urb->interval = data->isoc_tx_ep->bInterval;
 640
 641                 urb->transfer_flags  = URB_ISO_ASAP;
 642                 urb->transfer_buffer = skb->data;
 643                 urb->transfer_buffer_length = skb->len;
 644
 645                 __fill_isoc_descriptor(urb, skb->len,
 646                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 647
 648                 hdev->stat.sco_tx++;
 649                 break;
 650
 651         default:
 652                 return -EILSEQ;
 653         }
 654
 655         usb_anchor_urb(urb, &data->tx_anchor);
 656
 657         err = usb_submit_urb(urb, GFP_ATOMIC);
 658         if (err < 0) {
 659                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 660                 kfree(urb->setup_packet);
 661                 usb_unanchor_urb(urb);
 662         }
 663
 664         usb_free_urb(urb);
 665
 666         return err;
 667 }
 668
 669 static void btusb_destruct(struct hci_dev *hdev)
 670 {
 671         struct btusb_data *data = hdev->driver_data;
 672
 673         BT_DBG("%s", hdev->name);
 674
 675         kfree(data);
 676 }
 677
 678 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 679 {
 680         struct btusb_data *data = hdev->driver_data;
 681
 682         BT_DBG("%s evt %d", hdev->name, evt);
 683
 684         if (hdev->conn_hash.acl_num > 0) {
 685                 if (!test_and_set_bit(BTUSB_BULK_RUNNING, &data->flags)) {
 686                         if (btusb_submit_bulk_urb(hdev, GFP_ATOMIC) < 0)
 687                                 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 688                         else
 689                                 btusb_submit_bulk_urb(hdev, GFP_ATOMIC);
 690                 }
 691         } else {
 692                 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 693                 usb_unlink_anchored_urbs(&data->bulk_anchor);
 694         }
 695
 696         schedule_work(&data->work);
 697 }
 698
 699 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 700 {
 701         struct btusb_data *data = hdev->driver_data;
 702         struct usb_interface *intf = data->isoc;
 703         struct usb_endpoint_descriptor *ep_desc;
 704         int i, err;
 705
 706         if (!data->isoc)
 707                 return -ENODEV;
 708
 709         err = usb_set_interface(data->udev, 1, altsetting);
 710         if (err < 0) {
 711                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 712                 return err;
 713         }
 714
 715         data->isoc_altsetting = altsetting;
 716
 717         data->isoc_tx_ep = NULL;
 718         data->isoc_rx_ep = NULL;
 719
 720         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 721                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 722
 723                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 724                         data->isoc_tx_ep = ep_desc;
 725                         continue;
 726                 }
 727
 728                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 729                         data->isoc_rx_ep = ep_desc;
 730                         continue;
 731                 }
 732         }
 733
 734         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 735                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 736                 return -ENODEV;
 737         }
 738
 739         return 0;
 740 }
 741
 742 static void btusb_work(struct work_struct *work)
 743 {
 744         struct btusb_data *data = container_of(work, struct btusb_data, work);
 745         struct hci_dev *hdev = data->hdev;
 746
 747         if (hdev->conn_hash.sco_num > 0) {
 748                 if (data->isoc_altsetting != 2) {
 749                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 750                         usb_kill_anchored_urbs(&data->isoc_anchor);
 751
 752                         if (__set_isoc_interface(hdev, 2) < 0)
 753                                 return;
 754                 }
 755
 756                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 757                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 758                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 759                         else
 760                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 761                 }
 762         } else {
 763                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 764                 usb_kill_anchored_urbs(&data->isoc_anchor);
 765
 766                 __set_isoc_interface(hdev, 0);
 767         }
 768 }
 769
 770 static int btusb_probe(struct usb_interface *intf,
 771                                 const struct usb_device_id *id)
 772 {
 773         struct usb_endpoint_descriptor *ep_desc;
 774         struct btusb_data *data;
 775         struct hci_dev *hdev;
 776         int i, err;
 777
 778         BT_DBG("intf %p id %p", intf, id);
 779
 780         /* interface numbers are hardcoded in the spec */
 781         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 782                 return -ENODEV;
 783
 784         if (!id->driver_info) {
 785                 const struct usb_device_id *match;
 786                 match = usb_match_id(intf, blacklist_table);
 787                 if (match)
 788                         id = match;
 789         }
 790
 791         if (id->driver_info == BTUSB_IGNORE)
 792                 return -ENODEV;
 793
 794         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 795                 return -ENODEV;
 796
 797         if (ignore_csr && id->driver_info & BTUSB_CSR)
 798                 return -ENODEV;
 799
 800         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 801                 return -ENODEV;
 802
 803         data = kzalloc(sizeof(*data), GFP_KERNEL);
 804         if (!data)
 805                 return -ENOMEM;
 806
 807         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 808                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 809
 810                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 811                         data->intr_ep = ep_desc;
 812                         continue;
 813                 }
 814
 815                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 816                         data->bulk_tx_ep = ep_desc;
 817                         continue;
 818                 }
 819
 820                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 821                         data->bulk_rx_ep = ep_desc;
 822                         continue;
 823                 }
 824         }
 825
 826         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 827                 kfree(data);
 828                 return -ENODEV;
 829         }
 830
 831         data->udev = interface_to_usbdev(intf);
 832         data->intf = intf;
 833
 834         spin_lock_init(&data->lock);
 835
 836         INIT_WORK(&data->work, btusb_work);
 837
 838         init_usb_anchor(&data->tx_anchor);
 839         init_usb_anchor(&data->intr_anchor);
 840         init_usb_anchor(&data->bulk_anchor);
 841         init_usb_anchor(&data->isoc_anchor);
 842
 843         hdev = hci_alloc_dev();
 844         if (!hdev) {
 845                 kfree(data);
 846                 return -ENOMEM;
 847         }
 848
 849         hdev->type = HCI_USB;
 850         hdev->driver_data = data;
 851
 852         data->hdev = hdev;
 853
 854         SET_HCIDEV_DEV(hdev, &intf->dev);
 855
 856         hdev->open     = btusb_open;
 857         hdev->close    = btusb_close;
 858         hdev->flush    = btusb_flush;
 859         hdev->send     = btusb_send_frame;
 860         hdev->destruct = btusb_destruct;
 861         hdev->notify   = btusb_notify;
 862
 863         hdev->owner = THIS_MODULE;
 864
 865         /* interface numbers are hardcoded in the spec */
 866         data->isoc = usb_ifnum_to_if(data->udev, 1);
 867
 868         if (reset || id->driver_info & BTUSB_RESET)
 869                 set_bit(HCI_QUIRK_RESET_ON_INIT, &hdev->quirks);
 870
 871         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
 872                 if (!disable_scofix)
 873                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
 874         }
 875
 876         if (id->driver_info & BTUSB_BROKEN_ISOC)
 877                 data->isoc = NULL;
 878
 879         if (id->driver_info & BTUSB_SNIFFER) {
 880                 struct usb_device *udev = data->udev;
 881
 882                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
 883                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
 884
 885                 data->isoc = NULL;
 886         }
 887
 888         if (id->driver_info & BTUSB_BCM92035) {
 889                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
 890                 struct sk_buff *skb;
 891
 892                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
 893                 if (skb) {
 894                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
 895                         skb_queue_tail(&hdev->driver_init, skb);
 896                 }
 897         }
 898
 899         if (data->isoc) {
 900                 err = usb_driver_claim_interface(&btusb_driver,
 901                                                         data->isoc, data);
 902                 if (err < 0) {
 903                         hci_free_dev(hdev);
 904                         kfree(data);
 905                         return err;
 906                 }
 907         }
 908
 909         err = hci_register_dev(hdev);
 910         if (err < 0) {
 911                 hci_free_dev(hdev);
 912                 kfree(data);
 913                 return err;
 914         }
 915
 916         usb_set_intfdata(intf, data);
 917
 918         return 0;
 919 }
 920
 921 static void btusb_disconnect(struct usb_interface *intf)
 922 {
 923         struct btusb_data *data = usb_get_intfdata(intf);
 924         struct hci_dev *hdev;
 925
 926         BT_DBG("intf %p", intf);
 927
 928         if (!data)
 929                 return;
 930
 931         hdev = data->hdev;
 932
 933         __hci_dev_hold(hdev);
 934
 935         usb_set_intfdata(data->intf, NULL);
 936
 937         if (data->isoc)
 938                 usb_set_intfdata(data->isoc, NULL);
 939
 940         hci_unregister_dev(hdev);
 941
 942         if (intf == data->isoc)
 943                 usb_driver_release_interface(&btusb_driver, data->intf);
 944         else if (data->isoc)
 945                 usb_driver_release_interface(&btusb_driver, data->isoc);
 946
 947         __hci_dev_put(hdev);
 948
 949         hci_free_dev(hdev);
 950 }
 951
 952 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
 953 {
 954         struct btusb_data *data = usb_get_intfdata(intf);
 955
 956         BT_DBG("intf %p", intf);
 957
 958         if (data->suspend_count++)
 959                 return 0;
 960
 961         cancel_work_sync(&data->work);
 962
 963         usb_kill_anchored_urbs(&data->tx_anchor);
 964
 965         usb_kill_anchored_urbs(&data->isoc_anchor);
 966         usb_kill_anchored_urbs(&data->bulk_anchor);
 967         usb_kill_anchored_urbs(&data->intr_anchor);
 968
 969         return 0;
 970 }
 971
 972 static int btusb_resume(struct usb_interface *intf)
 973 {
 974         struct btusb_data *data = usb_get_intfdata(intf);
 975         struct hci_dev *hdev = data->hdev;
 976         int err;
 977
 978         BT_DBG("intf %p", intf);
 979
 980         if (--data->suspend_count)
 981                 return 0;
 982
 983         if (!test_bit(HCI_RUNNING, &hdev->flags))
 984                 return 0;
 985
 986         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
 987                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
 988                 if (err < 0) {
 989                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 990                         return err;
 991                 }
 992         }
 993
 994         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
 995                 if (btusb_submit_bulk_urb(hdev, GFP_NOIO) < 0)
 996                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 997                 else
 998                         btusb_submit_bulk_urb(hdev, GFP_NOIO);
 999         }
1000
1001         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1002                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1003                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1004                 else
1005                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1006         }
1007
1008         return 0;
1009 }
1010
1011 static struct usb_driver btusb_driver = {
1012         .name           = "btusb",
1013         .probe          = btusb_probe,
1014         .disconnect     = btusb_disconnect,
1015         .suspend        = btusb_suspend,
1016         .resume         = btusb_resume,
1017         .id_table       = btusb_table,
1018 };
1019
1020 static int __init btusb_init(void)
1021 {
1022         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1023
1024         return usb_register(&btusb_driver);
1025 }
1026
1027 static void __exit btusb_exit(void)
1028 {
1029         usb_deregister(&btusb_driver);
1030 }
1031
1032 module_init(btusb_init);
1033 module_exit(btusb_exit);
1034
1035 module_param(ignore_dga, bool, 0644);
1036 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1037
1038 module_param(ignore_csr, bool, 0644);
1039 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1040
1041 module_param(ignore_sniffer, bool, 0644);
1042 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1043
1044 module_param(disable_scofix, bool, 0644);
1045 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1046
1047 module_param(force_scofix, bool, 0644);
1048 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1049
1050 module_param(reset, bool, 0644);
1051 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1052
1053 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1054 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1055 MODULE_VERSION(VERSION);
1056 MODULE_LICENSE("GPL");