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