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