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