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 VERSION "0.5"
  39
  40 static int ignore_dga;
  41 static int ignore_csr;
  42 static int ignore_sniffer;
  43 static int disable_scofix;
  44 static int force_scofix;
  45
  46 static int reset = 1;
  47
  48 static struct usb_driver btusb_driver;
  49
  50 #define BTUSB_IGNORE            0x01
  51 #define BTUSB_DIGIANSWER        0x02
  52 #define BTUSB_CSR               0x04
  53 #define BTUSB_SNIFFER           0x08
  54 #define BTUSB_BCM92035          0x10
  55 #define BTUSB_BROKEN_ISOC       0x20
  56 #define BTUSB_WRONG_SCO_MTU     0x40
  57
  58 static struct usb_device_id btusb_table[] = {
  59         /* Generic Bluetooth USB device */
  60         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  61
  62         /* AVM BlueFRITZ! USB v2.0 */
  63         { USB_DEVICE(0x057c, 0x3800) },
  64
  65         /* Bluetooth Ultraport Module from IBM */
  66         { USB_DEVICE(0x04bf, 0x030a) },
  67
  68         /* ALPS Modules with non-standard id */
  69         { USB_DEVICE(0x044e, 0x3001) },
  70         { USB_DEVICE(0x044e, 0x3002) },
  71
  72         /* Ericsson with non-standard id */
  73         { USB_DEVICE(0x0bdb, 0x1002) },
  74
  75         /* Canyon CN-BTU1 with HID interfaces */
  76         { USB_DEVICE(0x0c10, 0x0000) },
  77
  78         { }     /* Terminating entry */
  79 };
  80
  81 MODULE_DEVICE_TABLE(usb, btusb_table);
  82
  83 static struct usb_device_id blacklist_table[] = {
  84         /* CSR BlueCore devices */
  85         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
  86
  87         /* Broadcom BCM2033 without firmware */
  88         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
  89
  90         /* Broadcom BCM2035 */
  91         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
  92         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
  93         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
  94
  95         /* Broadcom BCM2045 */
  96         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
  97         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
  98
  99         /* IBM/Lenovo ThinkPad with Broadcom chip */
 100         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 101         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 102
 103         /* HP laptop with Broadcom chip */
 104         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 105
 106         /* Dell laptop with Broadcom chip */
 107         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 108
 109         /* Dell Wireless 370 and 410 devices */
 110         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 111         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 112
 113         /* Belkin F8T012 and F8T013 devices */
 114         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 115         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 116
 117         /* Asus WL-BTD202 device */
 118         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 119
 120         /* Kensington Bluetooth USB adapter */
 121         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 122
 123         /* RTX Telecom based adapters with buggy SCO support */
 124         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 125         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 126
 127         /* CONWISE Technology based adapters with buggy SCO support */
 128         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 129
 130         /* Digianswer devices */
 131         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 132         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 133
 134         /* CSR BlueCore Bluetooth Sniffer */
 135         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 136
 137         /* Frontline ComProbe Bluetooth Sniffer */
 138         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 139
 140         { }     /* Terminating entry */
 141 };
 142
 143 #define BTUSB_MAX_ISOC_FRAMES   10
 144
 145 #define BTUSB_INTR_RUNNING      0
 146 #define BTUSB_BULK_RUNNING      1
 147 #define BTUSB_ISOC_RUNNING      2
 148
 149 struct btusb_data {
 150         struct hci_dev       *hdev;
 151         struct usb_device    *udev;
 152         struct usb_interface *intf;
 153         struct usb_interface *isoc;
 154
 155         spinlock_t lock;
 156
 157         unsigned long flags;
 158
 159         struct work_struct work;
 160
 161         struct usb_anchor tx_anchor;
 162         struct usb_anchor intr_anchor;
 163         struct usb_anchor bulk_anchor;
 164         struct usb_anchor isoc_anchor;
 165
 166         struct usb_endpoint_descriptor *intr_ep;
 167         struct usb_endpoint_descriptor *bulk_tx_ep;
 168         struct usb_endpoint_descriptor *bulk_rx_ep;
 169         struct usb_endpoint_descriptor *isoc_tx_ep;
 170         struct usb_endpoint_descriptor *isoc_rx_ep;
 171
 172         __u8 cmdreq_type;
 173
 174         unsigned int sco_num;
 175         int isoc_altsetting;
 176         int suspend_count;
 177 };
 178
 179 static void btusb_intr_complete(struct urb *urb)
 180 {
 181         struct hci_dev *hdev = urb->context;
 182         struct btusb_data *data = hdev->driver_data;
 183         int err;
 184
 185         BT_DBG("%s urb %p status %d count %d", hdev->name,
 186                                         urb, urb->status, urb->actual_length);
 187
 188         if (!test_bit(HCI_RUNNING, &hdev->flags))
 189                 return;
 190
 191         if (urb->status == 0) {
 192                 hdev->stat.byte_rx += urb->actual_length;
 193
 194                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 195                                                 urb->transfer_buffer,
 196                                                 urb->actual_length) < 0) {
 197                         BT_ERR("%s corrupted event packet", hdev->name);
 198                         hdev->stat.err_rx++;
 199                 }
 200         }
 201
 202         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 203                 return;
 204
 205         usb_anchor_urb(urb, &data->intr_anchor);
 206
 207         err = usb_submit_urb(urb, GFP_ATOMIC);
 208         if (err < 0) {
 209                 BT_ERR("%s urb %p failed to resubmit (%d)",
 210                                                 hdev->name, urb, -err);
 211                 usb_unanchor_urb(urb);
 212         }
 213 }
 214
 215 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 216 {
 217         struct btusb_data *data = hdev->driver_data;
 218         struct urb *urb;
 219         unsigned char *buf;
 220         unsigned int pipe;
 221         int err, size;
 222
 223         BT_DBG("%s", hdev->name);
 224
 225         if (!data->intr_ep)
 226                 return -ENODEV;
 227
 228         urb = usb_alloc_urb(0, mem_flags);
 229         if (!urb)
 230                 return -ENOMEM;
 231
 232         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 233
 234         buf = kmalloc(size, mem_flags);
 235         if (!buf) {
 236                 usb_free_urb(urb);
 237                 return -ENOMEM;
 238         }
 239
 240         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 241
 242         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 243                                                 btusb_intr_complete, hdev,
 244                                                 data->intr_ep->bInterval);
 245
 246         urb->transfer_flags |= URB_FREE_BUFFER;
 247
 248         usb_anchor_urb(urb, &data->intr_anchor);
 249
 250         err = usb_submit_urb(urb, mem_flags);
 251         if (err < 0) {
 252                 BT_ERR("%s urb %p submission failed (%d)",
 253                                                 hdev->name, urb, -err);
 254                 usb_unanchor_urb(urb);
 255         }
 256
 257         usb_free_urb(urb);
 258
 259         return err;
 260 }
 261
 262 static void btusb_bulk_complete(struct urb *urb)
 263 {
 264         struct hci_dev *hdev = urb->context;
 265         struct btusb_data *data = hdev->driver_data;
 266         int err;
 267
 268         BT_DBG("%s urb %p status %d count %d", hdev->name,
 269                                         urb, urb->status, urb->actual_length);
 270
 271         if (!test_bit(HCI_RUNNING, &hdev->flags))
 272                 return;
 273
 274         if (urb->status == 0) {
 275                 hdev->stat.byte_rx += urb->actual_length;
 276
 277                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 278                                                 urb->transfer_buffer,
 279                                                 urb->actual_length) < 0) {
 280                         BT_ERR("%s corrupted ACL packet", hdev->name);
 281                         hdev->stat.err_rx++;
 282                 }
 283         }
 284
 285         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 286                 return;
 287
 288         usb_anchor_urb(urb, &data->bulk_anchor);
 289
 290         err = usb_submit_urb(urb, GFP_ATOMIC);
 291         if (err < 0) {
 292                 BT_ERR("%s urb %p failed to resubmit (%d)",
 293                                                 hdev->name, urb, -err);
 294                 usb_unanchor_urb(urb);
 295         }
 296 }
 297
 298 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 299 {
 300         struct btusb_data *data = hdev->driver_data;
 301         struct urb *urb;
 302         unsigned char *buf;
 303         unsigned int pipe;
 304         int err, size;
 305
 306         BT_DBG("%s", hdev->name);
 307
 308         if (!data->bulk_rx_ep)
 309                 return -ENODEV;
 310
 311         urb = usb_alloc_urb(0, mem_flags);
 312         if (!urb)
 313                 return -ENOMEM;
 314
 315         size = le16_to_cpu(data->bulk_rx_ep->wMaxPacketSize);
 316
 317         buf = kmalloc(size, mem_flags);
 318         if (!buf) {
 319                 usb_free_urb(urb);
 320                 return -ENOMEM;
 321         }
 322
 323         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 324
 325         usb_fill_bulk_urb(urb, data->udev, pipe,
 326                                         buf, size, btusb_bulk_complete, hdev);
 327
 328         urb->transfer_flags |= URB_FREE_BUFFER;
 329
 330         usb_anchor_urb(urb, &data->bulk_anchor);
 331
 332         err = usb_submit_urb(urb, mem_flags);
 333         if (err < 0) {
 334                 BT_ERR("%s urb %p submission failed (%d)",
 335                                                 hdev->name, urb, -err);
 336                 usb_unanchor_urb(urb);
 337         }
 338
 339         usb_free_urb(urb);
 340
 341         return err;
 342 }
 343
 344 static void btusb_isoc_complete(struct urb *urb)
 345 {
 346         struct hci_dev *hdev = urb->context;
 347         struct btusb_data *data = hdev->driver_data;
 348         int i, err;
 349
 350         BT_DBG("%s urb %p status %d count %d", hdev->name,
 351                                         urb, urb->status, urb->actual_length);
 352
 353         if (!test_bit(HCI_RUNNING, &hdev->flags))
 354                 return;
 355
 356         if (urb->status == 0) {
 357                 for (i = 0; i < urb->number_of_packets; i++) {
 358                         unsigned int offset = urb->iso_frame_desc[i].offset;
 359                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 360
 361                         if (urb->iso_frame_desc[i].status)
 362                                 continue;
 363
 364                         hdev->stat.byte_rx += length;
 365
 366                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 367                                                 urb->transfer_buffer + offset,
 368                                                                 length) < 0) {
 369                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 370                                 hdev->stat.err_rx++;
 371                         }
 372                 }
 373         }
 374
 375         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 376                 return;
 377
 378         usb_anchor_urb(urb, &data->isoc_anchor);
 379
 380         err = usb_submit_urb(urb, GFP_ATOMIC);
 381         if (err < 0) {
 382                 BT_ERR("%s urb %p failed to resubmit (%d)",
 383                                                 hdev->name, urb, -err);
 384                 usb_unanchor_urb(urb);
 385         }
 386 }
 387
 388 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 389 {
 390         int i, offset = 0;
 391
 392         BT_DBG("len %d mtu %d", len, mtu);
 393
 394         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 395                                         i++, offset += mtu, len -= mtu) {
 396                 urb->iso_frame_desc[i].offset = offset;
 397                 urb->iso_frame_desc[i].length = mtu;
 398         }
 399
 400         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 401                 urb->iso_frame_desc[i].offset = offset;
 402                 urb->iso_frame_desc[i].length = len;
 403                 i++;
 404         }
 405
 406         urb->number_of_packets = i;
 407 }
 408
 409 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 410 {
 411         struct btusb_data *data = hdev->driver_data;
 412         struct urb *urb;
 413         unsigned char *buf;
 414         unsigned int pipe;
 415         int err, size;
 416
 417         BT_DBG("%s", hdev->name);
 418
 419         if (!data->isoc_rx_ep)
 420                 return -ENODEV;
 421
 422         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 423         if (!urb)
 424                 return -ENOMEM;
 425
 426         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 427                                                 BTUSB_MAX_ISOC_FRAMES;
 428
 429         buf = kmalloc(size, mem_flags);
 430         if (!buf) {
 431                 usb_free_urb(urb);
 432                 return -ENOMEM;
 433         }
 434
 435         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 436
 437         urb->dev      = data->udev;
 438         urb->pipe     = pipe;
 439         urb->context  = hdev;
 440         urb->complete = btusb_isoc_complete;
 441         urb->interval = data->isoc_rx_ep->bInterval;
 442
 443         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 444         urb->transfer_buffer = buf;
 445         urb->transfer_buffer_length = size;
 446
 447         __fill_isoc_descriptor(urb, size,
 448                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 449
 450         usb_anchor_urb(urb, &data->isoc_anchor);
 451
 452         err = usb_submit_urb(urb, mem_flags);
 453         if (err < 0) {
 454                 BT_ERR("%s urb %p submission failed (%d)",
 455                                                 hdev->name, urb, -err);
 456                 usb_unanchor_urb(urb);
 457         }
 458
 459         usb_free_urb(urb);
 460
 461         return err;
 462 }
 463
 464 static void btusb_tx_complete(struct urb *urb)
 465 {
 466         struct sk_buff *skb = urb->context;
 467         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 468
 469         BT_DBG("%s urb %p status %d count %d", hdev->name,
 470                                         urb, urb->status, urb->actual_length);
 471
 472         if (!test_bit(HCI_RUNNING, &hdev->flags))
 473                 goto done;
 474
 475         if (!urb->status)
 476                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 477         else
 478                 hdev->stat.err_tx++;
 479
 480 done:
 481         kfree(urb->setup_packet);
 482
 483         kfree_skb(skb);
 484 }
 485
 486 static int btusb_open(struct hci_dev *hdev)
 487 {
 488         struct btusb_data *data = hdev->driver_data;
 489         int err;
 490
 491         BT_DBG("%s", hdev->name);
 492
 493         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 494                 return 0;
 495
 496         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 497                 return 0;
 498
 499         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 500         if (err < 0)
 501                 goto failed;
 502
 503         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 504         if (err < 0) {
 505                 usb_kill_anchored_urbs(&data->intr_anchor);
 506                 goto failed;
 507         }
 508
 509         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 510         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 511
 512         return 0;
 513
 514 failed:
 515         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 516         clear_bit(HCI_RUNNING, &hdev->flags);
 517         return err;
 518 }
 519
 520 static int btusb_close(struct hci_dev *hdev)
 521 {
 522         struct btusb_data *data = hdev->driver_data;
 523
 524         BT_DBG("%s", hdev->name);
 525
 526         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 527                 return 0;
 528
 529         cancel_work_sync(&data->work);
 530
 531         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 532         usb_kill_anchored_urbs(&data->isoc_anchor);
 533
 534         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 535         usb_kill_anchored_urbs(&data->bulk_anchor);
 536
 537         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 538         usb_kill_anchored_urbs(&data->intr_anchor);
 539
 540         return 0;
 541 }
 542
 543 static int btusb_flush(struct hci_dev *hdev)
 544 {
 545         struct btusb_data *data = hdev->driver_data;
 546
 547         BT_DBG("%s", hdev->name);
 548
 549         usb_kill_anchored_urbs(&data->tx_anchor);
 550
 551         return 0;
 552 }
 553
 554 static int btusb_send_frame(struct sk_buff *skb)
 555 {
 556         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 557         struct btusb_data *data = hdev->driver_data;
 558         struct usb_ctrlrequest *dr;
 559         struct urb *urb;
 560         unsigned int pipe;
 561         int err;
 562
 563         BT_DBG("%s", hdev->name);
 564
 565         if (!test_bit(HCI_RUNNING, &hdev->flags))
 566                 return -EBUSY;
 567
 568         switch (bt_cb(skb)->pkt_type) {
 569         case HCI_COMMAND_PKT:
 570                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 571                 if (!urb)
 572                         return -ENOMEM;
 573
 574                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 575                 if (!dr) {
 576                         usb_free_urb(urb);
 577                         return -ENOMEM;
 578                 }
 579
 580                 dr->bRequestType = data->cmdreq_type;
 581                 dr->bRequest     = 0;
 582                 dr->wIndex       = 0;
 583                 dr->wValue       = 0;
 584                 dr->wLength      = __cpu_to_le16(skb->len);
 585
 586                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 587
 588                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 589                                 skb->data, skb->len, btusb_tx_complete, skb);
 590
 591                 hdev->stat.cmd_tx++;
 592                 break;
 593
 594         case HCI_ACLDATA_PKT:
 595                 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
 596                         return -ENODEV;
 597
 598                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 599                 if (!urb)
 600                         return -ENOMEM;
 601
 602                 pipe = usb_sndbulkpipe(data->udev,
 603                                         data->bulk_tx_ep->bEndpointAddress);
 604
 605                 usb_fill_bulk_urb(urb, data->udev, pipe,
 606                                 skb->data, skb->len, btusb_tx_complete, skb);
 607
 608                 hdev->stat.acl_tx++;
 609                 break;
 610
 611         case HCI_SCODATA_PKT:
 612                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 613                         return -ENODEV;
 614
 615                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 616                 if (!urb)
 617                         return -ENOMEM;
 618
 619                 pipe = usb_sndisocpipe(data->udev,
 620                                         data->isoc_tx_ep->bEndpointAddress);
 621
 622                 urb->dev      = data->udev;
 623                 urb->pipe     = pipe;
 624                 urb->context  = skb;
 625                 urb->complete = btusb_tx_complete;
 626                 urb->interval = data->isoc_tx_ep->bInterval;
 627
 628                 urb->transfer_flags  = URB_ISO_ASAP;
 629                 urb->transfer_buffer = skb->data;
 630                 urb->transfer_buffer_length = skb->len;
 631
 632                 __fill_isoc_descriptor(urb, skb->len,
 633                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 634
 635                 hdev->stat.sco_tx++;
 636                 break;
 637
 638         default:
 639                 return -EILSEQ;
 640         }
 641
 642         usb_anchor_urb(urb, &data->tx_anchor);
 643
 644         err = usb_submit_urb(urb, GFP_ATOMIC);
 645         if (err < 0) {
 646                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 647                 kfree(urb->setup_packet);
 648                 usb_unanchor_urb(urb);
 649         }
 650
 651         usb_free_urb(urb);
 652
 653         return err;
 654 }
 655
 656 static void btusb_destruct(struct hci_dev *hdev)
 657 {
 658         struct btusb_data *data = hdev->driver_data;
 659
 660         BT_DBG("%s", hdev->name);
 661
 662         kfree(data);
 663 }
 664
 665 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 666 {
 667         struct btusb_data *data = hdev->driver_data;
 668
 669         BT_DBG("%s evt %d", hdev->name, evt);
 670
 671         if (hdev->conn_hash.sco_num != data->sco_num) {
 672                 data->sco_num = hdev->conn_hash.sco_num;
 673                 schedule_work(&data->work);
 674         }
 675 }
 676
 677 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 678 {
 679         struct btusb_data *data = hdev->driver_data;
 680         struct usb_interface *intf = data->isoc;
 681         struct usb_endpoint_descriptor *ep_desc;
 682         int i, err;
 683
 684         if (!data->isoc)
 685                 return -ENODEV;
 686
 687         err = usb_set_interface(data->udev, 1, altsetting);
 688         if (err < 0) {
 689                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 690                 return err;
 691         }
 692
 693         data->isoc_altsetting = altsetting;
 694
 695         data->isoc_tx_ep = NULL;
 696         data->isoc_rx_ep = NULL;
 697
 698         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 699                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 700
 701                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 702                         data->isoc_tx_ep = ep_desc;
 703                         continue;
 704                 }
 705
 706                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 707                         data->isoc_rx_ep = ep_desc;
 708                         continue;
 709                 }
 710         }
 711
 712         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 713                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 714                 return -ENODEV;
 715         }
 716
 717         return 0;
 718 }
 719
 720 static void btusb_work(struct work_struct *work)
 721 {
 722         struct btusb_data *data = container_of(work, struct btusb_data, work);
 723         struct hci_dev *hdev = data->hdev;
 724
 725         if (hdev->conn_hash.sco_num > 0) {
 726                 if (data->isoc_altsetting != 2) {
 727                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 728                         usb_kill_anchored_urbs(&data->isoc_anchor);
 729
 730                         if (__set_isoc_interface(hdev, 2) < 0)
 731                                 return;
 732                 }
 733
 734                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 735                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 736                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 737                         else
 738                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 739                 }
 740         } else {
 741                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 742                 usb_kill_anchored_urbs(&data->isoc_anchor);
 743
 744                 __set_isoc_interface(hdev, 0);
 745         }
 746 }
 747
 748 static int btusb_probe(struct usb_interface *intf,
 749                                 const struct usb_device_id *id)
 750 {
 751         struct usb_endpoint_descriptor *ep_desc;
 752         struct btusb_data *data;
 753         struct hci_dev *hdev;
 754         int i, err;
 755
 756         BT_DBG("intf %p id %p", intf, id);
 757
 758         /* interface numbers are hardcoded in the spec */
 759         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 760                 return -ENODEV;
 761
 762         if (!id->driver_info) {
 763                 const struct usb_device_id *match;
 764                 match = usb_match_id(intf, blacklist_table);
 765                 if (match)
 766                         id = match;
 767         }
 768
 769         if (id->driver_info == BTUSB_IGNORE)
 770                 return -ENODEV;
 771
 772         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 773                 return -ENODEV;
 774
 775         if (ignore_csr && id->driver_info & BTUSB_CSR)
 776                 return -ENODEV;
 777
 778         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 779                 return -ENODEV;
 780
 781         data = kzalloc(sizeof(*data), GFP_KERNEL);
 782         if (!data)
 783                 return -ENOMEM;
 784
 785         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 786                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 787
 788                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 789                         data->intr_ep = ep_desc;
 790                         continue;
 791                 }
 792
 793                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 794                         data->bulk_tx_ep = ep_desc;
 795                         continue;
 796                 }
 797
 798                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 799                         data->bulk_rx_ep = ep_desc;
 800                         continue;
 801                 }
 802         }
 803
 804         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 805                 kfree(data);
 806                 return -ENODEV;
 807         }
 808
 809         data->cmdreq_type = USB_TYPE_CLASS;
 810
 811         data->udev = interface_to_usbdev(intf);
 812         data->intf = intf;
 813
 814         spin_lock_init(&data->lock);
 815
 816         INIT_WORK(&data->work, btusb_work);
 817
 818         init_usb_anchor(&data->tx_anchor);
 819         init_usb_anchor(&data->intr_anchor);
 820         init_usb_anchor(&data->bulk_anchor);
 821         init_usb_anchor(&data->isoc_anchor);
 822
 823         hdev = hci_alloc_dev();
 824         if (!hdev) {
 825                 kfree(data);
 826                 return -ENOMEM;
 827         }
 828
 829         hdev->type = HCI_USB;
 830         hdev->driver_data = data;
 831
 832         data->hdev = hdev;
 833
 834         SET_HCIDEV_DEV(hdev, &intf->dev);
 835
 836         hdev->open     = btusb_open;
 837         hdev->close    = btusb_close;
 838         hdev->flush    = btusb_flush;
 839         hdev->send     = btusb_send_frame;
 840         hdev->destruct = btusb_destruct;
 841         hdev->notify   = btusb_notify;
 842
 843         hdev->owner = THIS_MODULE;
 844
 845         /* Interface numbers are hardcoded in the specification */
 846         data->isoc = usb_ifnum_to_if(data->udev, 1);
 847
 848         if (!reset)
 849                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
 850
 851         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
 852                 if (!disable_scofix)
 853                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
 854         }
 855
 856         if (id->driver_info & BTUSB_BROKEN_ISOC)
 857                 data->isoc = NULL;
 858
 859         if (id->driver_info & BTUSB_DIGIANSWER) {
 860                 data->cmdreq_type = USB_TYPE_VENDOR;
 861                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
 862         }
 863
 864         if (id->driver_info & BTUSB_CSR) {
 865                 struct usb_device *udev = data->udev;
 866
 867                 /* Old firmware would otherwise execute USB reset */
 868                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
 869                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
 870         }
 871
 872         if (id->driver_info & BTUSB_SNIFFER) {
 873                 struct usb_device *udev = data->udev;
 874
 875                 /* New sniffer firmware has crippled HCI interface */
 876                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
 877                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
 878
 879                 data->isoc = NULL;
 880         }
 881
 882         if (id->driver_info & BTUSB_BCM92035) {
 883                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
 884                 struct sk_buff *skb;
 885
 886                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
 887                 if (skb) {
 888                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
 889                         skb_queue_tail(&hdev->driver_init, skb);
 890                 }
 891         }
 892
 893         if (data->isoc) {
 894                 err = usb_driver_claim_interface(&btusb_driver,
 895                                                         data->isoc, data);
 896                 if (err < 0) {
 897                         hci_free_dev(hdev);
 898                         kfree(data);
 899                         return err;
 900                 }
 901         }
 902
 903         err = hci_register_dev(hdev);
 904         if (err < 0) {
 905                 hci_free_dev(hdev);
 906                 kfree(data);
 907                 return err;
 908         }
 909
 910         usb_set_intfdata(intf, data);
 911
 912         return 0;
 913 }
 914
 915 static void btusb_disconnect(struct usb_interface *intf)
 916 {
 917         struct btusb_data *data = usb_get_intfdata(intf);
 918         struct hci_dev *hdev;
 919
 920         BT_DBG("intf %p", intf);
 921
 922         if (!data)
 923                 return;
 924
 925         hdev = data->hdev;
 926
 927         __hci_dev_hold(hdev);
 928
 929         usb_set_intfdata(data->intf, NULL);
 930
 931         if (data->isoc)
 932                 usb_set_intfdata(data->isoc, NULL);
 933
 934         hci_unregister_dev(hdev);
 935
 936         if (intf == data->isoc)
 937                 usb_driver_release_interface(&btusb_driver, data->intf);
 938         else if (data->isoc)
 939                 usb_driver_release_interface(&btusb_driver, data->isoc);
 940
 941         __hci_dev_put(hdev);
 942
 943         hci_free_dev(hdev);
 944 }
 945
 946 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
 947 {
 948         struct btusb_data *data = usb_get_intfdata(intf);
 949
 950         BT_DBG("intf %p", intf);
 951
 952         if (data->suspend_count++)
 953                 return 0;
 954
 955         cancel_work_sync(&data->work);
 956
 957         usb_kill_anchored_urbs(&data->tx_anchor);
 958
 959         usb_kill_anchored_urbs(&data->isoc_anchor);
 960         usb_kill_anchored_urbs(&data->bulk_anchor);
 961         usb_kill_anchored_urbs(&data->intr_anchor);
 962
 963         return 0;
 964 }
 965
 966 static int btusb_resume(struct usb_interface *intf)
 967 {
 968         struct btusb_data *data = usb_get_intfdata(intf);
 969         struct hci_dev *hdev = data->hdev;
 970         int err;
 971
 972         BT_DBG("intf %p", intf);
 973
 974         if (--data->suspend_count)
 975                 return 0;
 976
 977         if (!test_bit(HCI_RUNNING, &hdev->flags))
 978                 return 0;
 979
 980         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
 981                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
 982                 if (err < 0) {
 983                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 984                         return err;
 985                 }
 986         }
 987
 988         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
 989                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
 990                 if (err < 0) {
 991                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 992                         return err;
 993                 } else
 994                         btusb_submit_bulk_urb(hdev, GFP_NOIO);
 995         }
 996
 997         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 998                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
 999                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1000                 else
1001                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1002         }
1003
1004         return 0;
1005 }
1006
1007 static struct usb_driver btusb_driver = {
1008         .name           = "btusb",
1009         .probe          = btusb_probe,
1010         .disconnect     = btusb_disconnect,
1011         .suspend        = btusb_suspend,
1012         .resume         = btusb_resume,
1013         .id_table       = btusb_table,
1014 };
1015
1016 static int __init btusb_init(void)
1017 {
1018         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1019
1020         return usb_register(&btusb_driver);
1021 }
1022
1023 static void __exit btusb_exit(void)
1024 {
1025         usb_deregister(&btusb_driver);
1026 }
1027
1028 module_init(btusb_init);
1029 module_exit(btusb_exit);
1030
1031 module_param(ignore_dga, bool, 0644);
1032 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1033
1034 module_param(ignore_csr, bool, 0644);
1035 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1036
1037 module_param(ignore_sniffer, bool, 0644);
1038 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1039
1040 module_param(disable_scofix, bool, 0644);
1041 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1042
1043 module_param(force_scofix, bool, 0644);
1044 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1045
1046 module_param(reset, bool, 0644);
1047 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1048
1049 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1050 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1051 MODULE_VERSION(VERSION);
1052 MODULE_LICENSE("GPL");