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