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 "0.4"
  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
  52 static int reset = 1;
  53
  54 static struct usb_driver btusb_driver;
  55
  56 #define BTUSB_IGNORE            0x01
  57 #define BTUSB_DIGIANSWER        0x02
  58 #define BTUSB_CSR               0x04
  59 #define BTUSB_SNIFFER           0x08
  60 #define BTUSB_BCM92035          0x10
  61 #define BTUSB_BROKEN_ISOC       0x20
  62 #define BTUSB_WRONG_SCO_MTU     0x40
  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) },
  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_WRONG_SCO_MTU },
  98         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
  99         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 100
 101         /* Broadcom BCM2045 */
 102         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 103         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 104
 105         /* IBM/Lenovo ThinkPad with Broadcom chip */
 106         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 107         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 108
 109         /* HP laptop with Broadcom chip */
 110         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 111
 112         /* Dell laptop with Broadcom chip */
 113         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 114
 115         /* Dell Wireless 370 */
 116         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 117
 118         /* Dell Wireless 410 */
 119         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 120
 121         /* Kensington Bluetooth USB adapter */
 122         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 123
 124         /* Belkin F8T012 and F8T013 devices */
 125         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 126         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 127
 128         /* RTX Telecom based adapters with buggy SCO support */
 129         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 130         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 131
 132         /* CONWISE Technology based adapters with buggy SCO support */
 133         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 134
 135         /* Digianswer devices */
 136         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 137         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 138
 139         /* CSR BlueCore Bluetooth Sniffer */
 140         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 141
 142         /* Frontline ComProbe Bluetooth Sniffer */
 143         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 144
 145         { }     /* Terminating entry */
 146 };
 147
 148 #define BTUSB_MAX_ISOC_FRAMES   10
 149
 150 #define BTUSB_INTR_RUNNING      0
 151 #define BTUSB_BULK_RUNNING      1
 152 #define BTUSB_ISOC_RUNNING      2
 153
 154 struct btusb_data {
 155         struct hci_dev       *hdev;
 156         struct usb_device    *udev;
 157         struct usb_interface *intf;
 158         struct usb_interface *isoc;
 159
 160         spinlock_t lock;
 161
 162         unsigned long flags;
 163
 164         struct work_struct work;
 165
 166         struct usb_anchor tx_anchor;
 167         struct usb_anchor intr_anchor;
 168         struct usb_anchor bulk_anchor;
 169         struct usb_anchor isoc_anchor;
 170
 171         struct usb_endpoint_descriptor *intr_ep;
 172         struct usb_endpoint_descriptor *bulk_tx_ep;
 173         struct usb_endpoint_descriptor *bulk_rx_ep;
 174         struct usb_endpoint_descriptor *isoc_tx_ep;
 175         struct usb_endpoint_descriptor *isoc_rx_ep;
 176
 177         __u8 cmdreq_type;
 178
 179         int isoc_altsetting;
 180         int suspend_count;
 181 };
 182
 183 static void btusb_intr_complete(struct urb *urb)
 184 {
 185         struct hci_dev *hdev = urb->context;
 186         struct btusb_data *data = hdev->driver_data;
 187         int err;
 188
 189         BT_DBG("%s urb %p status %d count %d", hdev->name,
 190                                         urb, urb->status, urb->actual_length);
 191
 192         if (!test_bit(HCI_RUNNING, &hdev->flags))
 193                 return;
 194
 195         if (urb->status == 0) {
 196                 hdev->stat.byte_rx += urb->actual_length;
 197
 198                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 199                                                 urb->transfer_buffer,
 200                                                 urb->actual_length) < 0) {
 201                         BT_ERR("%s corrupted event packet", hdev->name);
 202                         hdev->stat.err_rx++;
 203                 }
 204         }
 205
 206         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 207                 return;
 208
 209         usb_anchor_urb(urb, &data->intr_anchor);
 210
 211         err = usb_submit_urb(urb, GFP_ATOMIC);
 212         if (err < 0) {
 213                 BT_ERR("%s urb %p failed to resubmit (%d)",
 214                                                 hdev->name, urb, -err);
 215                 usb_unanchor_urb(urb);
 216         }
 217 }
 218
 219 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 220 {
 221         struct btusb_data *data = hdev->driver_data;
 222         struct urb *urb;
 223         unsigned char *buf;
 224         unsigned int pipe;
 225         int err, size;
 226
 227         BT_DBG("%s", hdev->name);
 228
 229         if (!data->intr_ep)
 230                 return -ENODEV;
 231
 232         urb = usb_alloc_urb(0, mem_flags);
 233         if (!urb)
 234                 return -ENOMEM;
 235
 236         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 237
 238         buf = kmalloc(size, mem_flags);
 239         if (!buf) {
 240                 usb_free_urb(urb);
 241                 return -ENOMEM;
 242         }
 243
 244         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 245
 246         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 247                                                 btusb_intr_complete, hdev,
 248                                                 data->intr_ep->bInterval);
 249
 250         urb->transfer_flags |= URB_FREE_BUFFER;
 251
 252         usb_anchor_urb(urb, &data->intr_anchor);
 253
 254         err = usb_submit_urb(urb, mem_flags);
 255         if (err < 0) {
 256                 BT_ERR("%s urb %p submission failed (%d)",
 257                                                 hdev->name, urb, -err);
 258                 usb_unanchor_urb(urb);
 259         }
 260
 261         usb_free_urb(urb);
 262
 263         return err;
 264 }
 265
 266 static void btusb_bulk_complete(struct urb *urb)
 267 {
 268         struct hci_dev *hdev = urb->context;
 269         struct btusb_data *data = hdev->driver_data;
 270         int err;
 271
 272         BT_DBG("%s urb %p status %d count %d", hdev->name,
 273                                         urb, urb->status, urb->actual_length);
 274
 275         if (!test_bit(HCI_RUNNING, &hdev->flags))
 276                 return;
 277
 278         if (urb->status == 0) {
 279                 hdev->stat.byte_rx += urb->actual_length;
 280
 281                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 282                                                 urb->transfer_buffer,
 283                                                 urb->actual_length) < 0) {
 284                         BT_ERR("%s corrupted ACL packet", hdev->name);
 285                         hdev->stat.err_rx++;
 286                 }
 287         }
 288
 289         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 290                 return;
 291
 292         usb_anchor_urb(urb, &data->bulk_anchor);
 293
 294         err = usb_submit_urb(urb, GFP_ATOMIC);
 295         if (err < 0) {
 296                 BT_ERR("%s urb %p failed to resubmit (%d)",
 297                                                 hdev->name, urb, -err);
 298                 usb_unanchor_urb(urb);
 299         }
 300 }
 301
 302 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 303 {
 304         struct btusb_data *data = hdev->driver_data;
 305         struct urb *urb;
 306         unsigned char *buf;
 307         unsigned int pipe;
 308         int err, size;
 309
 310         BT_DBG("%s", hdev->name);
 311
 312         if (!data->bulk_rx_ep)
 313                 return -ENODEV;
 314
 315         urb = usb_alloc_urb(0, mem_flags);
 316         if (!urb)
 317                 return -ENOMEM;
 318
 319         size = le16_to_cpu(data->bulk_rx_ep->wMaxPacketSize);
 320
 321         buf = kmalloc(size, mem_flags);
 322         if (!buf) {
 323                 usb_free_urb(urb);
 324                 return -ENOMEM;
 325         }
 326
 327         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 328
 329         usb_fill_bulk_urb(urb, data->udev, pipe,
 330                                         buf, size, btusb_bulk_complete, hdev);
 331
 332         urb->transfer_flags |= URB_FREE_BUFFER;
 333
 334         usb_anchor_urb(urb, &data->bulk_anchor);
 335
 336         err = usb_submit_urb(urb, mem_flags);
 337         if (err < 0) {
 338                 BT_ERR("%s urb %p submission failed (%d)",
 339                                                 hdev->name, urb, -err);
 340                 usb_unanchor_urb(urb);
 341         }
 342
 343         usb_free_urb(urb);
 344
 345         return err;
 346 }
 347
 348 static void btusb_isoc_complete(struct urb *urb)
 349 {
 350         struct hci_dev *hdev = urb->context;
 351         struct btusb_data *data = hdev->driver_data;
 352         int i, err;
 353
 354         BT_DBG("%s urb %p status %d count %d", hdev->name,
 355                                         urb, urb->status, urb->actual_length);
 356
 357         if (!test_bit(HCI_RUNNING, &hdev->flags))
 358                 return;
 359
 360         if (urb->status == 0) {
 361                 for (i = 0; i < urb->number_of_packets; i++) {
 362                         unsigned int offset = urb->iso_frame_desc[i].offset;
 363                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 364
 365                         if (urb->iso_frame_desc[i].status)
 366                                 continue;
 367
 368                         hdev->stat.byte_rx += length;
 369
 370                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 371                                                 urb->transfer_buffer + offset,
 372                                                                 length) < 0) {
 373                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 374                                 hdev->stat.err_rx++;
 375                         }
 376                 }
 377         }
 378
 379         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 380                 return;
 381
 382         usb_anchor_urb(urb, &data->isoc_anchor);
 383
 384         err = usb_submit_urb(urb, GFP_ATOMIC);
 385         if (err < 0) {
 386                 BT_ERR("%s urb %p failed to resubmit (%d)",
 387                                                 hdev->name, urb, -err);
 388                 usb_unanchor_urb(urb);
 389         }
 390 }
 391
 392 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 393 {
 394         int i, offset = 0;
 395
 396         BT_DBG("len %d mtu %d", len, mtu);
 397
 398         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 399                                         i++, offset += mtu, len -= mtu) {
 400                 urb->iso_frame_desc[i].offset = offset;
 401                 urb->iso_frame_desc[i].length = mtu;
 402         }
 403
 404         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 405                 urb->iso_frame_desc[i].offset = offset;
 406                 urb->iso_frame_desc[i].length = len;
 407                 i++;
 408         }
 409
 410         urb->number_of_packets = i;
 411 }
 412
 413 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 414 {
 415         struct btusb_data *data = hdev->driver_data;
 416         struct urb *urb;
 417         unsigned char *buf;
 418         unsigned int pipe;
 419         int err, size;
 420
 421         BT_DBG("%s", hdev->name);
 422
 423         if (!data->isoc_rx_ep)
 424                 return -ENODEV;
 425
 426         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 427         if (!urb)
 428                 return -ENOMEM;
 429
 430         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 431                                                 BTUSB_MAX_ISOC_FRAMES;
 432
 433         buf = kmalloc(size, mem_flags);
 434         if (!buf) {
 435                 usb_free_urb(urb);
 436                 return -ENOMEM;
 437         }
 438
 439         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 440
 441         urb->dev      = data->udev;
 442         urb->pipe     = pipe;
 443         urb->context  = hdev;
 444         urb->complete = btusb_isoc_complete;
 445         urb->interval = data->isoc_rx_ep->bInterval;
 446
 447         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 448         urb->transfer_buffer = buf;
 449         urb->transfer_buffer_length = size;
 450
 451         __fill_isoc_descriptor(urb, size,
 452                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 453
 454         usb_anchor_urb(urb, &data->isoc_anchor);
 455
 456         err = usb_submit_urb(urb, mem_flags);
 457         if (err < 0) {
 458                 BT_ERR("%s urb %p submission failed (%d)",
 459                                                 hdev->name, urb, -err);
 460                 usb_unanchor_urb(urb);
 461         }
 462
 463         usb_free_urb(urb);
 464
 465         return err;
 466 }
 467
 468 static void btusb_tx_complete(struct urb *urb)
 469 {
 470         struct sk_buff *skb = urb->context;
 471         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 472
 473         BT_DBG("%s urb %p status %d count %d", hdev->name,
 474                                         urb, urb->status, urb->actual_length);
 475
 476         if (!test_bit(HCI_RUNNING, &hdev->flags))
 477                 goto done;
 478
 479         if (!urb->status)
 480                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 481         else
 482                 hdev->stat.err_tx++;
 483
 484 done:
 485         kfree(urb->setup_packet);
 486
 487         kfree_skb(skb);
 488 }
 489
 490 static int btusb_open(struct hci_dev *hdev)
 491 {
 492         struct btusb_data *data = hdev->driver_data;
 493         int err;
 494
 495         BT_DBG("%s", hdev->name);
 496
 497         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 498                 return 0;
 499
 500         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 501                 return 0;
 502
 503         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 504         if (err < 0) {
 505                 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 506                 clear_bit(HCI_RUNNING, &hdev->flags);
 507         }
 508
 509         return err;
 510 }
 511
 512 static int btusb_close(struct hci_dev *hdev)
 513 {
 514         struct btusb_data *data = hdev->driver_data;
 515
 516         BT_DBG("%s", hdev->name);
 517
 518         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 519                 return 0;
 520
 521         cancel_work_sync(&data->work);
 522
 523         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 524         usb_kill_anchored_urbs(&data->isoc_anchor);
 525
 526         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 527         usb_kill_anchored_urbs(&data->bulk_anchor);
 528
 529         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 530         usb_kill_anchored_urbs(&data->intr_anchor);
 531
 532         return 0;
 533 }
 534
 535 static int btusb_flush(struct hci_dev *hdev)
 536 {
 537         struct btusb_data *data = hdev->driver_data;
 538
 539         BT_DBG("%s", hdev->name);
 540
 541         usb_kill_anchored_urbs(&data->tx_anchor);
 542
 543         return 0;
 544 }
 545
 546 static int btusb_send_frame(struct sk_buff *skb)
 547 {
 548         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 549         struct btusb_data *data = hdev->driver_data;
 550         struct usb_ctrlrequest *dr;
 551         struct urb *urb;
 552         unsigned int pipe;
 553         int err;
 554
 555         BT_DBG("%s", hdev->name);
 556
 557         if (!test_bit(HCI_RUNNING, &hdev->flags))
 558                 return -EBUSY;
 559
 560         switch (bt_cb(skb)->pkt_type) {
 561         case HCI_COMMAND_PKT:
 562                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 563                 if (!urb)
 564                         return -ENOMEM;
 565
 566                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 567                 if (!dr) {
 568                         usb_free_urb(urb);
 569                         return -ENOMEM;
 570                 }
 571
 572                 dr->bRequestType = data->cmdreq_type;
 573                 dr->bRequest     = 0;
 574                 dr->wIndex       = 0;
 575                 dr->wValue       = 0;
 576                 dr->wLength      = __cpu_to_le16(skb->len);
 577
 578                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 579
 580                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 581                                 skb->data, skb->len, btusb_tx_complete, skb);
 582
 583                 hdev->stat.cmd_tx++;
 584                 break;
 585
 586         case HCI_ACLDATA_PKT:
 587                 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
 588                         return -ENODEV;
 589
 590                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 591                 if (!urb)
 592                         return -ENOMEM;
 593
 594                 pipe = usb_sndbulkpipe(data->udev,
 595                                         data->bulk_tx_ep->bEndpointAddress);
 596
 597                 usb_fill_bulk_urb(urb, data->udev, pipe,
 598                                 skb->data, skb->len, btusb_tx_complete, skb);
 599
 600                 hdev->stat.acl_tx++;
 601                 break;
 602
 603         case HCI_SCODATA_PKT:
 604                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 605                         return -ENODEV;
 606
 607                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 608                 if (!urb)
 609                         return -ENOMEM;
 610
 611                 pipe = usb_sndisocpipe(data->udev,
 612                                         data->isoc_tx_ep->bEndpointAddress);
 613
 614                 urb->dev      = data->udev;
 615                 urb->pipe     = pipe;
 616                 urb->context  = skb;
 617                 urb->complete = btusb_tx_complete;
 618                 urb->interval = data->isoc_tx_ep->bInterval;
 619
 620                 urb->transfer_flags  = URB_ISO_ASAP;
 621                 urb->transfer_buffer = skb->data;
 622                 urb->transfer_buffer_length = skb->len;
 623
 624                 __fill_isoc_descriptor(urb, skb->len,
 625                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 626
 627                 hdev->stat.sco_tx++;
 628                 break;
 629
 630         default:
 631                 return -EILSEQ;
 632         }
 633
 634         usb_anchor_urb(urb, &data->tx_anchor);
 635
 636         err = usb_submit_urb(urb, GFP_ATOMIC);
 637         if (err < 0) {
 638                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 639                 kfree(urb->setup_packet);
 640                 usb_unanchor_urb(urb);
 641         }
 642
 643         usb_free_urb(urb);
 644
 645         return err;
 646 }
 647
 648 static void btusb_destruct(struct hci_dev *hdev)
 649 {
 650         struct btusb_data *data = hdev->driver_data;
 651
 652         BT_DBG("%s", hdev->name);
 653
 654         kfree(data);
 655 }
 656
 657 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 658 {
 659         struct btusb_data *data = hdev->driver_data;
 660
 661         BT_DBG("%s evt %d", hdev->name, evt);
 662
 663         if (hdev->conn_hash.acl_num > 0) {
 664                 if (!test_and_set_bit(BTUSB_BULK_RUNNING, &data->flags)) {
 665                         if (btusb_submit_bulk_urb(hdev, GFP_ATOMIC) < 0)
 666                                 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 667                         else
 668                                 btusb_submit_bulk_urb(hdev, GFP_ATOMIC);
 669                 }
 670         } else {
 671                 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 672                 usb_unlink_anchored_urbs(&data->bulk_anchor);
 673         }
 674
 675         schedule_work(&data->work);
 676 }
 677
 678 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 679 {
 680         struct btusb_data *data = hdev->driver_data;
 681         struct usb_interface *intf = data->isoc;
 682         struct usb_endpoint_descriptor *ep_desc;
 683         int i, err;
 684
 685         if (!data->isoc)
 686                 return -ENODEV;
 687
 688         err = usb_set_interface(data->udev, 1, altsetting);
 689         if (err < 0) {
 690                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 691                 return err;
 692         }
 693
 694         data->isoc_altsetting = altsetting;
 695
 696         data->isoc_tx_ep = NULL;
 697         data->isoc_rx_ep = NULL;
 698
 699         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 700                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 701
 702                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 703                         data->isoc_tx_ep = ep_desc;
 704                         continue;
 705                 }
 706
 707                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 708                         data->isoc_rx_ep = ep_desc;
 709                         continue;
 710                 }
 711         }
 712
 713         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 714                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 715                 return -ENODEV;
 716         }
 717
 718         return 0;
 719 }
 720
 721 static void btusb_work(struct work_struct *work)
 722 {
 723         struct btusb_data *data = container_of(work, struct btusb_data, work);
 724         struct hci_dev *hdev = data->hdev;
 725
 726         if (hdev->conn_hash.sco_num > 0) {
 727                 if (data->isoc_altsetting != 2) {
 728                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 729                         usb_kill_anchored_urbs(&data->isoc_anchor);
 730
 731                         if (__set_isoc_interface(hdev, 2) < 0)
 732                                 return;
 733                 }
 734
 735                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 736                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 737                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 738                         else
 739                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 740                 }
 741         } else {
 742                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 743                 usb_kill_anchored_urbs(&data->isoc_anchor);
 744
 745                 __set_isoc_interface(hdev, 0);
 746         }
 747 }
 748
 749 static int btusb_probe(struct usb_interface *intf,
 750                                 const struct usb_device_id *id)
 751 {
 752         struct usb_endpoint_descriptor *ep_desc;
 753         struct btusb_data *data;
 754         struct hci_dev *hdev;
 755         int i, err;
 756
 757         BT_DBG("intf %p id %p", intf, id);
 758
 759         /* interface numbers are hardcoded in the spec */
 760         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 761                 return -ENODEV;
 762
 763         if (!id->driver_info) {
 764                 const struct usb_device_id *match;
 765                 match = usb_match_id(intf, blacklist_table);
 766                 if (match)
 767                         id = match;
 768         }
 769
 770         if (id->driver_info == BTUSB_IGNORE)
 771                 return -ENODEV;
 772
 773         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 774                 return -ENODEV;
 775
 776         if (ignore_csr && id->driver_info & BTUSB_CSR)
 777                 return -ENODEV;
 778
 779         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 780                 return -ENODEV;
 781
 782         data = kzalloc(sizeof(*data), GFP_KERNEL);
 783         if (!data)
 784                 return -ENOMEM;
 785
 786         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 787                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 788
 789                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 790                         data->intr_ep = ep_desc;
 791                         continue;
 792                 }
 793
 794                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 795                         data->bulk_tx_ep = ep_desc;
 796                         continue;
 797                 }
 798
 799                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 800                         data->bulk_rx_ep = ep_desc;
 801                         continue;
 802                 }
 803         }
 804
 805         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 806                 kfree(data);
 807                 return -ENODEV;
 808         }
 809
 810         data->cmdreq_type = USB_TYPE_CLASS;
 811
 812         data->udev = interface_to_usbdev(intf);
 813         data->intf = intf;
 814
 815         spin_lock_init(&data->lock);
 816
 817         INIT_WORK(&data->work, btusb_work);
 818
 819         init_usb_anchor(&data->tx_anchor);
 820         init_usb_anchor(&data->intr_anchor);
 821         init_usb_anchor(&data->bulk_anchor);
 822         init_usb_anchor(&data->isoc_anchor);
 823
 824         hdev = hci_alloc_dev();
 825         if (!hdev) {
 826                 kfree(data);
 827                 return -ENOMEM;
 828         }
 829
 830         hdev->type = HCI_USB;
 831         hdev->driver_data = data;
 832
 833         data->hdev = hdev;
 834
 835         SET_HCIDEV_DEV(hdev, &intf->dev);
 836
 837         hdev->open     = btusb_open;
 838         hdev->close    = btusb_close;
 839         hdev->flush    = btusb_flush;
 840         hdev->send     = btusb_send_frame;
 841         hdev->destruct = btusb_destruct;
 842         hdev->notify   = btusb_notify;
 843
 844         hdev->owner = THIS_MODULE;
 845
 846         /* Interface numbers are hardcoded in the specification */
 847         data->isoc = usb_ifnum_to_if(data->udev, 1);
 848
 849         if (!reset)
 850                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
 851
 852         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
 853                 if (!disable_scofix)
 854                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
 855         }
 856
 857         if (id->driver_info & BTUSB_BROKEN_ISOC)
 858                 data->isoc = NULL;
 859
 860         if (id->driver_info & BTUSB_DIGIANSWER) {
 861                 data->cmdreq_type = USB_TYPE_VENDOR;
 862                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
 863         }
 864
 865         if (id->driver_info & BTUSB_CSR) {
 866                 struct usb_device *udev = data->udev;
 867
 868                 /* Old firmware would otherwise execute USB reset */
 869                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
 870                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
 871         }
 872
 873         if (id->driver_info & BTUSB_SNIFFER) {
 874                 struct usb_device *udev = data->udev;
 875
 876                 /* New sniffer firmware has crippled HCI interface */
 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 int btusb_suspend(struct usb_interface *intf, pm_message_t message)
 948 {
 949         struct btusb_data *data = usb_get_intfdata(intf);
 950
 951         BT_DBG("intf %p", intf);
 952
 953         if (data->suspend_count++)
 954                 return 0;
 955
 956         cancel_work_sync(&data->work);
 957
 958         usb_kill_anchored_urbs(&data->tx_anchor);
 959
 960         usb_kill_anchored_urbs(&data->isoc_anchor);
 961         usb_kill_anchored_urbs(&data->bulk_anchor);
 962         usb_kill_anchored_urbs(&data->intr_anchor);
 963
 964         return 0;
 965 }
 966
 967 static int btusb_resume(struct usb_interface *intf)
 968 {
 969         struct btusb_data *data = usb_get_intfdata(intf);
 970         struct hci_dev *hdev = data->hdev;
 971         int err;
 972
 973         BT_DBG("intf %p", intf);
 974
 975         if (--data->suspend_count)
 976                 return 0;
 977
 978         if (!test_bit(HCI_RUNNING, &hdev->flags))
 979                 return 0;
 980
 981         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
 982                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
 983                 if (err < 0) {
 984                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 985                         return err;
 986                 }
 987         }
 988
 989         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
 990                 if (btusb_submit_bulk_urb(hdev, GFP_NOIO) < 0)
 991                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 992                 else
 993                         btusb_submit_bulk_urb(hdev, GFP_NOIO);
 994         }
 995
 996         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 997                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
 998                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 999                 else
1000                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1001         }
1002
1003         return 0;
1004 }
1005
1006 static struct usb_driver btusb_driver = {
1007         .name           = "btusb",
1008         .probe          = btusb_probe,
1009         .disconnect     = btusb_disconnect,
1010         .suspend        = btusb_suspend,
1011         .resume         = btusb_resume,
1012         .id_table       = btusb_table,
1013 };
1014
1015 static int __init btusb_init(void)
1016 {
1017         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1018
1019         return usb_register(&btusb_driver);
1020 }
1021
1022 static void __exit btusb_exit(void)
1023 {
1024         usb_deregister(&btusb_driver);
1025 }
1026
1027 module_init(btusb_init);
1028 module_exit(btusb_exit);
1029
1030 module_param(ignore_dga, bool, 0644);
1031 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1032
1033 module_param(ignore_csr, bool, 0644);
1034 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1035
1036 module_param(ignore_sniffer, bool, 0644);
1037 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1038
1039 module_param(disable_scofix, bool, 0644);
1040 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1041
1042 module_param(force_scofix, bool, 0644);
1043 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1044
1045 module_param(reset, bool, 0644);
1046 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1047
1048 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1049 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1050 MODULE_VERSION(VERSION);
1051 MODULE_LICENSE("GPL");