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 };
 202
 203 static void btusb_intr_complete(struct urb *urb)
 204 {
 205         struct hci_dev *hdev = urb->context;
 206         struct btusb_data *data = hdev->driver_data;
 207         int err;
 208
 209         BT_DBG("%s urb %p status %d count %d", hdev->name,
 210                                         urb, urb->status, urb->actual_length);
 211
 212         if (!test_bit(HCI_RUNNING, &hdev->flags))
 213                 return;
 214
 215         if (urb->status == 0) {
 216                 hdev->stat.byte_rx += urb->actual_length;
 217
 218                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 219                                                 urb->transfer_buffer,
 220                                                 urb->actual_length) < 0) {
 221                         BT_ERR("%s corrupted event packet", hdev->name);
 222                         hdev->stat.err_rx++;
 223                 }
 224         }
 225
 226         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 227                 return;
 228
 229         usb_anchor_urb(urb, &data->intr_anchor);
 230
 231         err = usb_submit_urb(urb, GFP_ATOMIC);
 232         if (err < 0) {
 233                 BT_ERR("%s urb %p failed to resubmit (%d)",
 234                                                 hdev->name, urb, -err);
 235                 usb_unanchor_urb(urb);
 236         }
 237 }
 238
 239 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 240 {
 241         struct btusb_data *data = hdev->driver_data;
 242         struct urb *urb;
 243         unsigned char *buf;
 244         unsigned int pipe;
 245         int err, size;
 246
 247         BT_DBG("%s", hdev->name);
 248
 249         if (!data->intr_ep)
 250                 return -ENODEV;
 251
 252         urb = usb_alloc_urb(0, mem_flags);
 253         if (!urb)
 254                 return -ENOMEM;
 255
 256         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 257
 258         buf = kmalloc(size, mem_flags);
 259         if (!buf) {
 260                 usb_free_urb(urb);
 261                 return -ENOMEM;
 262         }
 263
 264         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 265
 266         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 267                                                 btusb_intr_complete, hdev,
 268                                                 data->intr_ep->bInterval);
 269
 270         urb->transfer_flags |= URB_FREE_BUFFER;
 271
 272         usb_anchor_urb(urb, &data->intr_anchor);
 273
 274         err = usb_submit_urb(urb, mem_flags);
 275         if (err < 0) {
 276                 BT_ERR("%s urb %p submission failed (%d)",
 277                                                 hdev->name, urb, -err);
 278                 usb_unanchor_urb(urb);
 279         }
 280
 281         usb_free_urb(urb);
 282
 283         return err;
 284 }
 285
 286 static void btusb_bulk_complete(struct urb *urb)
 287 {
 288         struct hci_dev *hdev = urb->context;
 289         struct btusb_data *data = hdev->driver_data;
 290         int err;
 291
 292         BT_DBG("%s urb %p status %d count %d", hdev->name,
 293                                         urb, urb->status, urb->actual_length);
 294
 295         if (!test_bit(HCI_RUNNING, &hdev->flags))
 296                 return;
 297
 298         if (urb->status == 0) {
 299                 hdev->stat.byte_rx += urb->actual_length;
 300
 301                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 302                                                 urb->transfer_buffer,
 303                                                 urb->actual_length) < 0) {
 304                         BT_ERR("%s corrupted ACL packet", hdev->name);
 305                         hdev->stat.err_rx++;
 306                 }
 307         }
 308
 309         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 310                 return;
 311
 312         usb_anchor_urb(urb, &data->bulk_anchor);
 313
 314         err = usb_submit_urb(urb, GFP_ATOMIC);
 315         if (err < 0) {
 316                 BT_ERR("%s urb %p failed to resubmit (%d)",
 317                                                 hdev->name, urb, -err);
 318                 usb_unanchor_urb(urb);
 319         }
 320 }
 321
 322 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 323 {
 324         struct btusb_data *data = hdev->driver_data;
 325         struct urb *urb;
 326         unsigned char *buf;
 327         unsigned int pipe;
 328         int err, size;
 329
 330         BT_DBG("%s", hdev->name);
 331
 332         if (!data->bulk_rx_ep)
 333                 return -ENODEV;
 334
 335         urb = usb_alloc_urb(0, mem_flags);
 336         if (!urb)
 337                 return -ENOMEM;
 338
 339         size = le16_to_cpu(data->bulk_rx_ep->wMaxPacketSize);
 340
 341         buf = kmalloc(size, mem_flags);
 342         if (!buf) {
 343                 usb_free_urb(urb);
 344                 return -ENOMEM;
 345         }
 346
 347         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 348
 349         usb_fill_bulk_urb(urb, data->udev, pipe,
 350                                         buf, size, btusb_bulk_complete, hdev);
 351
 352         urb->transfer_flags |= URB_FREE_BUFFER;
 353
 354         usb_anchor_urb(urb, &data->bulk_anchor);
 355
 356         err = usb_submit_urb(urb, mem_flags);
 357         if (err < 0) {
 358                 BT_ERR("%s urb %p submission failed (%d)",
 359                                                 hdev->name, urb, -err);
 360                 usb_unanchor_urb(urb);
 361         }
 362
 363         usb_free_urb(urb);
 364
 365         return err;
 366 }
 367
 368 static void btusb_isoc_complete(struct urb *urb)
 369 {
 370         struct hci_dev *hdev = urb->context;
 371         struct btusb_data *data = hdev->driver_data;
 372         int i, err;
 373
 374         BT_DBG("%s urb %p status %d count %d", hdev->name,
 375                                         urb, urb->status, urb->actual_length);
 376
 377         if (!test_bit(HCI_RUNNING, &hdev->flags))
 378                 return;
 379
 380         if (urb->status == 0) {
 381                 for (i = 0; i < urb->number_of_packets; i++) {
 382                         unsigned int offset = urb->iso_frame_desc[i].offset;
 383                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 384
 385                         if (urb->iso_frame_desc[i].status)
 386                                 continue;
 387
 388                         hdev->stat.byte_rx += length;
 389
 390                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 391                                                 urb->transfer_buffer + offset,
 392                                                                 length) < 0) {
 393                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 394                                 hdev->stat.err_rx++;
 395                         }
 396                 }
 397         }
 398
 399         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 400                 return;
 401
 402         usb_anchor_urb(urb, &data->isoc_anchor);
 403
 404         err = usb_submit_urb(urb, GFP_ATOMIC);
 405         if (err < 0) {
 406                 BT_ERR("%s urb %p failed to resubmit (%d)",
 407                                                 hdev->name, urb, -err);
 408                 usb_unanchor_urb(urb);
 409         }
 410 }
 411
 412 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 413 {
 414         int i, offset = 0;
 415
 416         BT_DBG("len %d mtu %d", len, mtu);
 417
 418         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 419                                         i++, offset += mtu, len -= mtu) {
 420                 urb->iso_frame_desc[i].offset = offset;
 421                 urb->iso_frame_desc[i].length = mtu;
 422         }
 423
 424         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 425                 urb->iso_frame_desc[i].offset = offset;
 426                 urb->iso_frame_desc[i].length = len;
 427                 i++;
 428         }
 429
 430         urb->number_of_packets = i;
 431 }
 432
 433 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 434 {
 435         struct btusb_data *data = hdev->driver_data;
 436         struct urb *urb;
 437         unsigned char *buf;
 438         unsigned int pipe;
 439         int err, size;
 440
 441         BT_DBG("%s", hdev->name);
 442
 443         if (!data->isoc_rx_ep)
 444                 return -ENODEV;
 445
 446         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 447         if (!urb)
 448                 return -ENOMEM;
 449
 450         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 451                                                 BTUSB_MAX_ISOC_FRAMES;
 452
 453         buf = kmalloc(size, mem_flags);
 454         if (!buf) {
 455                 usb_free_urb(urb);
 456                 return -ENOMEM;
 457         }
 458
 459         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 460
 461         urb->dev      = data->udev;
 462         urb->pipe     = pipe;
 463         urb->context  = hdev;
 464         urb->complete = btusb_isoc_complete;
 465         urb->interval = data->isoc_rx_ep->bInterval;
 466
 467         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 468         urb->transfer_buffer = buf;
 469         urb->transfer_buffer_length = size;
 470
 471         __fill_isoc_descriptor(urb, size,
 472                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 473
 474         usb_anchor_urb(urb, &data->isoc_anchor);
 475
 476         err = usb_submit_urb(urb, mem_flags);
 477         if (err < 0) {
 478                 BT_ERR("%s urb %p submission failed (%d)",
 479                                                 hdev->name, urb, -err);
 480                 usb_unanchor_urb(urb);
 481         }
 482
 483         usb_free_urb(urb);
 484
 485         return err;
 486 }
 487
 488 static void btusb_tx_complete(struct urb *urb)
 489 {
 490         struct sk_buff *skb = urb->context;
 491         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 492
 493         BT_DBG("%s urb %p status %d count %d", hdev->name,
 494                                         urb, urb->status, urb->actual_length);
 495
 496         if (!test_bit(HCI_RUNNING, &hdev->flags))
 497                 goto done;
 498
 499         if (!urb->status)
 500                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 501         else
 502                 hdev->stat.err_tx++;
 503
 504 done:
 505         kfree(urb->setup_packet);
 506
 507         kfree_skb(skb);
 508 }
 509
 510 static int btusb_open(struct hci_dev *hdev)
 511 {
 512         struct btusb_data *data = hdev->driver_data;
 513         int err;
 514
 515         BT_DBG("%s", hdev->name);
 516
 517         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 518                 return 0;
 519
 520         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 521                 return 0;
 522
 523         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 524         if (err < 0) {
 525                 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 526                 clear_bit(HCI_RUNNING, &hdev->flags);
 527         }
 528
 529         return err;
 530 }
 531
 532 static int btusb_close(struct hci_dev *hdev)
 533 {
 534         struct btusb_data *data = hdev->driver_data;
 535
 536         BT_DBG("%s", hdev->name);
 537
 538         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 539                 return 0;
 540
 541         cancel_work_sync(&data->work);
 542
 543         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 544         usb_kill_anchored_urbs(&data->isoc_anchor);
 545
 546         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 547         usb_kill_anchored_urbs(&data->bulk_anchor);
 548
 549         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 550         usb_kill_anchored_urbs(&data->intr_anchor);
 551
 552         return 0;
 553 }
 554
 555 static int btusb_flush(struct hci_dev *hdev)
 556 {
 557         struct btusb_data *data = hdev->driver_data;
 558
 559         BT_DBG("%s", hdev->name);
 560
 561         usb_kill_anchored_urbs(&data->tx_anchor);
 562
 563         return 0;
 564 }
 565
 566 static int btusb_send_frame(struct sk_buff *skb)
 567 {
 568         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 569         struct btusb_data *data = hdev->driver_data;
 570         struct usb_ctrlrequest *dr;
 571         struct urb *urb;
 572         unsigned int pipe;
 573         int err;
 574
 575         BT_DBG("%s", hdev->name);
 576
 577         if (!test_bit(HCI_RUNNING, &hdev->flags))
 578                 return -EBUSY;
 579
 580         switch (bt_cb(skb)->pkt_type) {
 581         case HCI_COMMAND_PKT:
 582                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 583                 if (!urb)
 584                         return -ENOMEM;
 585
 586                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 587                 if (!dr) {
 588                         usb_free_urb(urb);
 589                         return -ENOMEM;
 590                 }
 591
 592                 dr->bRequestType = USB_TYPE_CLASS;
 593                 dr->bRequest     = 0;
 594                 dr->wIndex       = 0;
 595                 dr->wValue       = 0;
 596                 dr->wLength      = __cpu_to_le16(skb->len);
 597
 598                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 599
 600                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 601                                 skb->data, skb->len, btusb_tx_complete, skb);
 602
 603                 hdev->stat.cmd_tx++;
 604                 break;
 605
 606         case HCI_ACLDATA_PKT:
 607                 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
 608                         return -ENODEV;
 609
 610                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 611                 if (!urb)
 612                         return -ENOMEM;
 613
 614                 pipe = usb_sndbulkpipe(data->udev,
 615                                         data->bulk_tx_ep->bEndpointAddress);
 616
 617                 usb_fill_bulk_urb(urb, data->udev, pipe,
 618                                 skb->data, skb->len, btusb_tx_complete, skb);
 619
 620                 hdev->stat.acl_tx++;
 621                 break;
 622
 623         case HCI_SCODATA_PKT:
 624                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 625                         return -ENODEV;
 626
 627                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 628                 if (!urb)
 629                         return -ENOMEM;
 630
 631                 pipe = usb_sndisocpipe(data->udev,
 632                                         data->isoc_tx_ep->bEndpointAddress);
 633
 634                 urb->dev      = data->udev;
 635                 urb->pipe     = pipe;
 636                 urb->context  = skb;
 637                 urb->complete = btusb_tx_complete;
 638                 urb->interval = data->isoc_tx_ep->bInterval;
 639
 640                 urb->transfer_flags  = URB_ISO_ASAP;
 641                 urb->transfer_buffer = skb->data;
 642                 urb->transfer_buffer_length = skb->len;
 643
 644                 __fill_isoc_descriptor(urb, skb->len,
 645                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 646
 647                 hdev->stat.sco_tx++;
 648                 break;
 649
 650         default:
 651                 return -EILSEQ;
 652         }
 653
 654         usb_anchor_urb(urb, &data->tx_anchor);
 655
 656         err = usb_submit_urb(urb, GFP_ATOMIC);
 657         if (err < 0) {
 658                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 659                 kfree(urb->setup_packet);
 660                 usb_unanchor_urb(urb);
 661         }
 662
 663         usb_free_urb(urb);
 664
 665         return err;
 666 }
 667
 668 static void btusb_destruct(struct hci_dev *hdev)
 669 {
 670         struct btusb_data *data = hdev->driver_data;
 671
 672         BT_DBG("%s", hdev->name);
 673
 674         kfree(data);
 675 }
 676
 677 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 678 {
 679         struct btusb_data *data = hdev->driver_data;
 680
 681         BT_DBG("%s evt %d", hdev->name, evt);
 682
 683         if (hdev->conn_hash.acl_num > 0) {
 684                 if (!test_and_set_bit(BTUSB_BULK_RUNNING, &data->flags)) {
 685                         if (btusb_submit_bulk_urb(hdev, GFP_ATOMIC) < 0)
 686                                 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 687                         else
 688                                 btusb_submit_bulk_urb(hdev, GFP_ATOMIC);
 689                 }
 690         } else {
 691                 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 692                 usb_unlink_anchored_urbs(&data->bulk_anchor);
 693         }
 694
 695         schedule_work(&data->work);
 696 }
 697
 698 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 699 {
 700         struct btusb_data *data = hdev->driver_data;
 701         struct usb_interface *intf = data->isoc;
 702         struct usb_endpoint_descriptor *ep_desc;
 703         int i, err;
 704
 705         if (!data->isoc)
 706                 return -ENODEV;
 707
 708         err = usb_set_interface(data->udev, 1, altsetting);
 709         if (err < 0) {
 710                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 711                 return err;
 712         }
 713
 714         data->isoc_altsetting = altsetting;
 715
 716         data->isoc_tx_ep = NULL;
 717         data->isoc_rx_ep = NULL;
 718
 719         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 720                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 721
 722                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 723                         data->isoc_tx_ep = ep_desc;
 724                         continue;
 725                 }
 726
 727                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 728                         data->isoc_rx_ep = ep_desc;
 729                         continue;
 730                 }
 731         }
 732
 733         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 734                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 735                 return -ENODEV;
 736         }
 737
 738         return 0;
 739 }
 740
 741 static void btusb_work(struct work_struct *work)
 742 {
 743         struct btusb_data *data = container_of(work, struct btusb_data, work);
 744         struct hci_dev *hdev = data->hdev;
 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, GFP_KERNEL) < 0)
 757                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 758                         else
 759                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 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");