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