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 "0.4"
  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         int isoc_altsetting;
 175         int suspend_count;
 176 };
 177
 178 static void btusb_intr_complete(struct urb *urb)
 179 {
 180         struct hci_dev *hdev = urb->context;
 181         struct btusb_data *data = hdev->driver_data;
 182         int err;
 183
 184         BT_DBG("%s urb %p status %d count %d", hdev->name,
 185                                         urb, urb->status, urb->actual_length);
 186
 187         if (!test_bit(HCI_RUNNING, &hdev->flags))
 188                 return;
 189
 190         if (urb->status == 0) {
 191                 hdev->stat.byte_rx += urb->actual_length;
 192
 193                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 194                                                 urb->transfer_buffer,
 195                                                 urb->actual_length) < 0) {
 196                         BT_ERR("%s corrupted event packet", hdev->name);
 197                         hdev->stat.err_rx++;
 198                 }
 199         }
 200
 201         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 202                 return;
 203
 204         usb_anchor_urb(urb, &data->intr_anchor);
 205
 206         err = usb_submit_urb(urb, GFP_ATOMIC);
 207         if (err < 0) {
 208                 BT_ERR("%s urb %p failed to resubmit (%d)",
 209                                                 hdev->name, urb, -err);
 210                 usb_unanchor_urb(urb);
 211         }
 212 }
 213
 214 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 215 {
 216         struct btusb_data *data = hdev->driver_data;
 217         struct urb *urb;
 218         unsigned char *buf;
 219         unsigned int pipe;
 220         int err, size;
 221
 222         BT_DBG("%s", hdev->name);
 223
 224         if (!data->intr_ep)
 225                 return -ENODEV;
 226
 227         urb = usb_alloc_urb(0, mem_flags);
 228         if (!urb)
 229                 return -ENOMEM;
 230
 231         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 232
 233         buf = kmalloc(size, mem_flags);
 234         if (!buf) {
 235                 usb_free_urb(urb);
 236                 return -ENOMEM;
 237         }
 238
 239         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 240
 241         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 242                                                 btusb_intr_complete, hdev,
 243                                                 data->intr_ep->bInterval);
 244
 245         urb->transfer_flags |= URB_FREE_BUFFER;
 246
 247         usb_anchor_urb(urb, &data->intr_anchor);
 248
 249         err = usb_submit_urb(urb, mem_flags);
 250         if (err < 0) {
 251                 BT_ERR("%s urb %p submission failed (%d)",
 252                                                 hdev->name, urb, -err);
 253                 usb_unanchor_urb(urb);
 254         }
 255
 256         usb_free_urb(urb);
 257
 258         return err;
 259 }
 260
 261 static void btusb_bulk_complete(struct urb *urb)
 262 {
 263         struct hci_dev *hdev = urb->context;
 264         struct btusb_data *data = hdev->driver_data;
 265         int err;
 266
 267         BT_DBG("%s urb %p status %d count %d", hdev->name,
 268                                         urb, urb->status, urb->actual_length);
 269
 270         if (!test_bit(HCI_RUNNING, &hdev->flags))
 271                 return;
 272
 273         if (urb->status == 0) {
 274                 hdev->stat.byte_rx += urb->actual_length;
 275
 276                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 277                                                 urb->transfer_buffer,
 278                                                 urb->actual_length) < 0) {
 279                         BT_ERR("%s corrupted ACL packet", hdev->name);
 280                         hdev->stat.err_rx++;
 281                 }
 282         }
 283
 284         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 285                 return;
 286
 287         usb_anchor_urb(urb, &data->bulk_anchor);
 288
 289         err = usb_submit_urb(urb, GFP_ATOMIC);
 290         if (err < 0) {
 291                 BT_ERR("%s urb %p failed to resubmit (%d)",
 292                                                 hdev->name, urb, -err);
 293                 usb_unanchor_urb(urb);
 294         }
 295 }
 296
 297 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 298 {
 299         struct btusb_data *data = hdev->driver_data;
 300         struct urb *urb;
 301         unsigned char *buf;
 302         unsigned int pipe;
 303         int err, size;
 304
 305         BT_DBG("%s", hdev->name);
 306
 307         if (!data->bulk_rx_ep)
 308                 return -ENODEV;
 309
 310         urb = usb_alloc_urb(0, mem_flags);
 311         if (!urb)
 312                 return -ENOMEM;
 313
 314         size = le16_to_cpu(data->bulk_rx_ep->wMaxPacketSize);
 315
 316         buf = kmalloc(size, mem_flags);
 317         if (!buf) {
 318                 usb_free_urb(urb);
 319                 return -ENOMEM;
 320         }
 321
 322         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 323
 324         usb_fill_bulk_urb(urb, data->udev, pipe,
 325                                         buf, size, btusb_bulk_complete, hdev);
 326
 327         urb->transfer_flags |= URB_FREE_BUFFER;
 328
 329         usb_anchor_urb(urb, &data->bulk_anchor);
 330
 331         err = usb_submit_urb(urb, mem_flags);
 332         if (err < 0) {
 333                 BT_ERR("%s urb %p submission failed (%d)",
 334                                                 hdev->name, urb, -err);
 335                 usb_unanchor_urb(urb);
 336         }
 337
 338         usb_free_urb(urb);
 339
 340         return err;
 341 }
 342
 343 static void btusb_isoc_complete(struct urb *urb)
 344 {
 345         struct hci_dev *hdev = urb->context;
 346         struct btusb_data *data = hdev->driver_data;
 347         int i, err;
 348
 349         BT_DBG("%s urb %p status %d count %d", hdev->name,
 350                                         urb, urb->status, urb->actual_length);
 351
 352         if (!test_bit(HCI_RUNNING, &hdev->flags))
 353                 return;
 354
 355         if (urb->status == 0) {
 356                 for (i = 0; i < urb->number_of_packets; i++) {
 357                         unsigned int offset = urb->iso_frame_desc[i].offset;
 358                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 359
 360                         if (urb->iso_frame_desc[i].status)
 361                                 continue;
 362
 363                         hdev->stat.byte_rx += length;
 364
 365                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 366                                                 urb->transfer_buffer + offset,
 367                                                                 length) < 0) {
 368                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 369                                 hdev->stat.err_rx++;
 370                         }
 371                 }
 372         }
 373
 374         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 375                 return;
 376
 377         usb_anchor_urb(urb, &data->isoc_anchor);
 378
 379         err = usb_submit_urb(urb, GFP_ATOMIC);
 380         if (err < 0) {
 381                 BT_ERR("%s urb %p failed to resubmit (%d)",
 382                                                 hdev->name, urb, -err);
 383                 usb_unanchor_urb(urb);
 384         }
 385 }
 386
 387 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 388 {
 389         int i, offset = 0;
 390
 391         BT_DBG("len %d mtu %d", len, mtu);
 392
 393         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 394                                         i++, offset += mtu, len -= mtu) {
 395                 urb->iso_frame_desc[i].offset = offset;
 396                 urb->iso_frame_desc[i].length = mtu;
 397         }
 398
 399         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 400                 urb->iso_frame_desc[i].offset = offset;
 401                 urb->iso_frame_desc[i].length = len;
 402                 i++;
 403         }
 404
 405         urb->number_of_packets = i;
 406 }
 407
 408 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 409 {
 410         struct btusb_data *data = hdev->driver_data;
 411         struct urb *urb;
 412         unsigned char *buf;
 413         unsigned int pipe;
 414         int err, size;
 415
 416         BT_DBG("%s", hdev->name);
 417
 418         if (!data->isoc_rx_ep)
 419                 return -ENODEV;
 420
 421         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 422         if (!urb)
 423                 return -ENOMEM;
 424
 425         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 426                                                 BTUSB_MAX_ISOC_FRAMES;
 427
 428         buf = kmalloc(size, mem_flags);
 429         if (!buf) {
 430                 usb_free_urb(urb);
 431                 return -ENOMEM;
 432         }
 433
 434         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 435
 436         urb->dev      = data->udev;
 437         urb->pipe     = pipe;
 438         urb->context  = hdev;
 439         urb->complete = btusb_isoc_complete;
 440         urb->interval = data->isoc_rx_ep->bInterval;
 441
 442         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 443         urb->transfer_buffer = buf;
 444         urb->transfer_buffer_length = size;
 445
 446         __fill_isoc_descriptor(urb, size,
 447                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 448
 449         usb_anchor_urb(urb, &data->isoc_anchor);
 450
 451         err = usb_submit_urb(urb, mem_flags);
 452         if (err < 0) {
 453                 BT_ERR("%s urb %p submission failed (%d)",
 454                                                 hdev->name, urb, -err);
 455                 usb_unanchor_urb(urb);
 456         }
 457
 458         usb_free_urb(urb);
 459
 460         return err;
 461 }
 462
 463 static void btusb_tx_complete(struct urb *urb)
 464 {
 465         struct sk_buff *skb = urb->context;
 466         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 467
 468         BT_DBG("%s urb %p status %d count %d", hdev->name,
 469                                         urb, urb->status, urb->actual_length);
 470
 471         if (!test_bit(HCI_RUNNING, &hdev->flags))
 472                 goto done;
 473
 474         if (!urb->status)
 475                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 476         else
 477                 hdev->stat.err_tx++;
 478
 479 done:
 480         kfree(urb->setup_packet);
 481
 482         kfree_skb(skb);
 483 }
 484
 485 static int btusb_open(struct hci_dev *hdev)
 486 {
 487         struct btusb_data *data = hdev->driver_data;
 488         int err;
 489
 490         BT_DBG("%s", hdev->name);
 491
 492         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 493                 return 0;
 494
 495         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 496                 return 0;
 497
 498         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 499         if (err < 0) {
 500                 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 501                 clear_bit(HCI_RUNNING, &hdev->flags);
 502         }
 503
 504         return err;
 505 }
 506
 507 static int btusb_close(struct hci_dev *hdev)
 508 {
 509         struct btusb_data *data = hdev->driver_data;
 510
 511         BT_DBG("%s", hdev->name);
 512
 513         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 514                 return 0;
 515
 516         cancel_work_sync(&data->work);
 517
 518         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 519         usb_kill_anchored_urbs(&data->isoc_anchor);
 520
 521         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 522         usb_kill_anchored_urbs(&data->bulk_anchor);
 523
 524         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 525         usb_kill_anchored_urbs(&data->intr_anchor);
 526
 527         return 0;
 528 }
 529
 530 static int btusb_flush(struct hci_dev *hdev)
 531 {
 532         struct btusb_data *data = hdev->driver_data;
 533
 534         BT_DBG("%s", hdev->name);
 535
 536         usb_kill_anchored_urbs(&data->tx_anchor);
 537
 538         return 0;
 539 }
 540
 541 static int btusb_send_frame(struct sk_buff *skb)
 542 {
 543         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 544         struct btusb_data *data = hdev->driver_data;
 545         struct usb_ctrlrequest *dr;
 546         struct urb *urb;
 547         unsigned int pipe;
 548         int err;
 549
 550         BT_DBG("%s", hdev->name);
 551
 552         if (!test_bit(HCI_RUNNING, &hdev->flags))
 553                 return -EBUSY;
 554
 555         switch (bt_cb(skb)->pkt_type) {
 556         case HCI_COMMAND_PKT:
 557                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 558                 if (!urb)
 559                         return -ENOMEM;
 560
 561                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 562                 if (!dr) {
 563                         usb_free_urb(urb);
 564                         return -ENOMEM;
 565                 }
 566
 567                 dr->bRequestType = data->cmdreq_type;
 568                 dr->bRequest     = 0;
 569                 dr->wIndex       = 0;
 570                 dr->wValue       = 0;
 571                 dr->wLength      = __cpu_to_le16(skb->len);
 572
 573                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 574
 575                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 576                                 skb->data, skb->len, btusb_tx_complete, skb);
 577
 578                 hdev->stat.cmd_tx++;
 579                 break;
 580
 581         case HCI_ACLDATA_PKT:
 582                 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
 583                         return -ENODEV;
 584
 585                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 586                 if (!urb)
 587                         return -ENOMEM;
 588
 589                 pipe = usb_sndbulkpipe(data->udev,
 590                                         data->bulk_tx_ep->bEndpointAddress);
 591
 592                 usb_fill_bulk_urb(urb, data->udev, pipe,
 593                                 skb->data, skb->len, btusb_tx_complete, skb);
 594
 595                 hdev->stat.acl_tx++;
 596                 break;
 597
 598         case HCI_SCODATA_PKT:
 599                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 600                         return -ENODEV;
 601
 602                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 603                 if (!urb)
 604                         return -ENOMEM;
 605
 606                 pipe = usb_sndisocpipe(data->udev,
 607                                         data->isoc_tx_ep->bEndpointAddress);
 608
 609                 urb->dev      = data->udev;
 610                 urb->pipe     = pipe;
 611                 urb->context  = skb;
 612                 urb->complete = btusb_tx_complete;
 613                 urb->interval = data->isoc_tx_ep->bInterval;
 614
 615                 urb->transfer_flags  = URB_ISO_ASAP;
 616                 urb->transfer_buffer = skb->data;
 617                 urb->transfer_buffer_length = skb->len;
 618
 619                 __fill_isoc_descriptor(urb, skb->len,
 620                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 621
 622                 hdev->stat.sco_tx++;
 623                 break;
 624
 625         default:
 626                 return -EILSEQ;
 627         }
 628
 629         usb_anchor_urb(urb, &data->tx_anchor);
 630
 631         err = usb_submit_urb(urb, GFP_ATOMIC);
 632         if (err < 0) {
 633                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 634                 kfree(urb->setup_packet);
 635                 usb_unanchor_urb(urb);
 636         }
 637
 638         usb_free_urb(urb);
 639
 640         return err;
 641 }
 642
 643 static void btusb_destruct(struct hci_dev *hdev)
 644 {
 645         struct btusb_data *data = hdev->driver_data;
 646
 647         BT_DBG("%s", hdev->name);
 648
 649         kfree(data);
 650 }
 651
 652 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 653 {
 654         struct btusb_data *data = hdev->driver_data;
 655
 656         BT_DBG("%s evt %d", hdev->name, evt);
 657
 658         if (hdev->conn_hash.acl_num > 0) {
 659                 if (!test_and_set_bit(BTUSB_BULK_RUNNING, &data->flags)) {
 660                         if (btusb_submit_bulk_urb(hdev, GFP_ATOMIC) < 0)
 661                                 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 662                         else
 663                                 btusb_submit_bulk_urb(hdev, GFP_ATOMIC);
 664                 }
 665         } else {
 666                 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 667                 usb_unlink_anchored_urbs(&data->bulk_anchor);
 668         }
 669
 670         schedule_work(&data->work);
 671 }
 672
 673 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 674 {
 675         struct btusb_data *data = hdev->driver_data;
 676         struct usb_interface *intf = data->isoc;
 677         struct usb_endpoint_descriptor *ep_desc;
 678         int i, err;
 679
 680         if (!data->isoc)
 681                 return -ENODEV;
 682
 683         err = usb_set_interface(data->udev, 1, altsetting);
 684         if (err < 0) {
 685                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 686                 return err;
 687         }
 688
 689         data->isoc_altsetting = altsetting;
 690
 691         data->isoc_tx_ep = NULL;
 692         data->isoc_rx_ep = NULL;
 693
 694         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 695                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 696
 697                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 698                         data->isoc_tx_ep = ep_desc;
 699                         continue;
 700                 }
 701
 702                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 703                         data->isoc_rx_ep = ep_desc;
 704                         continue;
 705                 }
 706         }
 707
 708         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 709                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 710                 return -ENODEV;
 711         }
 712
 713         return 0;
 714 }
 715
 716 static void btusb_work(struct work_struct *work)
 717 {
 718         struct btusb_data *data = container_of(work, struct btusb_data, work);
 719         struct hci_dev *hdev = data->hdev;
 720
 721         if (hdev->conn_hash.sco_num > 0) {
 722                 if (data->isoc_altsetting != 2) {
 723                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 724                         usb_kill_anchored_urbs(&data->isoc_anchor);
 725
 726                         if (__set_isoc_interface(hdev, 2) < 0)
 727                                 return;
 728                 }
 729
 730                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 731                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 732                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 733                         else
 734                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 735                 }
 736         } else {
 737                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 738                 usb_kill_anchored_urbs(&data->isoc_anchor);
 739
 740                 __set_isoc_interface(hdev, 0);
 741         }
 742 }
 743
 744 static int btusb_probe(struct usb_interface *intf,
 745                                 const struct usb_device_id *id)
 746 {
 747         struct usb_endpoint_descriptor *ep_desc;
 748         struct btusb_data *data;
 749         struct hci_dev *hdev;
 750         int i, err;
 751
 752         BT_DBG("intf %p id %p", intf, id);
 753
 754         /* interface numbers are hardcoded in the spec */
 755         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 756                 return -ENODEV;
 757
 758         if (!id->driver_info) {
 759                 const struct usb_device_id *match;
 760                 match = usb_match_id(intf, blacklist_table);
 761                 if (match)
 762                         id = match;
 763         }
 764
 765         if (id->driver_info == BTUSB_IGNORE)
 766                 return -ENODEV;
 767
 768         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 769                 return -ENODEV;
 770
 771         if (ignore_csr && id->driver_info & BTUSB_CSR)
 772                 return -ENODEV;
 773
 774         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 775                 return -ENODEV;
 776
 777         data = kzalloc(sizeof(*data), GFP_KERNEL);
 778         if (!data)
 779                 return -ENOMEM;
 780
 781         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 782                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 783
 784                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 785                         data->intr_ep = ep_desc;
 786                         continue;
 787                 }
 788
 789                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 790                         data->bulk_tx_ep = ep_desc;
 791                         continue;
 792                 }
 793
 794                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 795                         data->bulk_rx_ep = ep_desc;
 796                         continue;
 797                 }
 798         }
 799
 800         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 801                 kfree(data);
 802                 return -ENODEV;
 803         }
 804
 805         data->cmdreq_type = USB_TYPE_CLASS;
 806
 807         data->udev = interface_to_usbdev(intf);
 808         data->intf = intf;
 809
 810         spin_lock_init(&data->lock);
 811
 812         INIT_WORK(&data->work, btusb_work);
 813
 814         init_usb_anchor(&data->tx_anchor);
 815         init_usb_anchor(&data->intr_anchor);
 816         init_usb_anchor(&data->bulk_anchor);
 817         init_usb_anchor(&data->isoc_anchor);
 818
 819         hdev = hci_alloc_dev();
 820         if (!hdev) {
 821                 kfree(data);
 822                 return -ENOMEM;
 823         }
 824
 825         hdev->type = HCI_USB;
 826         hdev->driver_data = data;
 827
 828         data->hdev = hdev;
 829
 830         SET_HCIDEV_DEV(hdev, &intf->dev);
 831
 832         hdev->open     = btusb_open;
 833         hdev->close    = btusb_close;
 834         hdev->flush    = btusb_flush;
 835         hdev->send     = btusb_send_frame;
 836         hdev->destruct = btusb_destruct;
 837         hdev->notify   = btusb_notify;
 838
 839         hdev->owner = THIS_MODULE;
 840
 841         /* Interface numbers are hardcoded in the specification */
 842         data->isoc = usb_ifnum_to_if(data->udev, 1);
 843
 844         if (!reset)
 845                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
 846
 847         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
 848                 if (!disable_scofix)
 849                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
 850         }
 851
 852         if (id->driver_info & BTUSB_BROKEN_ISOC)
 853                 data->isoc = NULL;
 854
 855         if (id->driver_info & BTUSB_DIGIANSWER) {
 856                 data->cmdreq_type = USB_TYPE_VENDOR;
 857                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
 858         }
 859
 860         if (id->driver_info & BTUSB_CSR) {
 861                 struct usb_device *udev = data->udev;
 862
 863                 /* Old firmware would otherwise execute USB reset */
 864                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
 865                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
 866         }
 867
 868         if (id->driver_info & BTUSB_SNIFFER) {
 869                 struct usb_device *udev = data->udev;
 870
 871                 /* New sniffer firmware has crippled HCI interface */
 872                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
 873                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
 874
 875                 data->isoc = NULL;
 876         }
 877
 878         if (id->driver_info & BTUSB_BCM92035) {
 879                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
 880                 struct sk_buff *skb;
 881
 882                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
 883                 if (skb) {
 884                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
 885                         skb_queue_tail(&hdev->driver_init, skb);
 886                 }
 887         }
 888
 889         if (data->isoc) {
 890                 err = usb_driver_claim_interface(&btusb_driver,
 891                                                         data->isoc, data);
 892                 if (err < 0) {
 893                         hci_free_dev(hdev);
 894                         kfree(data);
 895                         return err;
 896                 }
 897         }
 898
 899         err = hci_register_dev(hdev);
 900         if (err < 0) {
 901                 hci_free_dev(hdev);
 902                 kfree(data);
 903                 return err;
 904         }
 905
 906         usb_set_intfdata(intf, data);
 907
 908         return 0;
 909 }
 910
 911 static void btusb_disconnect(struct usb_interface *intf)
 912 {
 913         struct btusb_data *data = usb_get_intfdata(intf);
 914         struct hci_dev *hdev;
 915
 916         BT_DBG("intf %p", intf);
 917
 918         if (!data)
 919                 return;
 920
 921         hdev = data->hdev;
 922
 923         __hci_dev_hold(hdev);
 924
 925         usb_set_intfdata(data->intf, NULL);
 926
 927         if (data->isoc)
 928                 usb_set_intfdata(data->isoc, NULL);
 929
 930         hci_unregister_dev(hdev);
 931
 932         if (intf == data->isoc)
 933                 usb_driver_release_interface(&btusb_driver, data->intf);
 934         else if (data->isoc)
 935                 usb_driver_release_interface(&btusb_driver, data->isoc);
 936
 937         __hci_dev_put(hdev);
 938
 939         hci_free_dev(hdev);
 940 }
 941
 942 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
 943 {
 944         struct btusb_data *data = usb_get_intfdata(intf);
 945
 946         BT_DBG("intf %p", intf);
 947
 948         if (data->suspend_count++)
 949                 return 0;
 950
 951         cancel_work_sync(&data->work);
 952
 953         usb_kill_anchored_urbs(&data->tx_anchor);
 954
 955         usb_kill_anchored_urbs(&data->isoc_anchor);
 956         usb_kill_anchored_urbs(&data->bulk_anchor);
 957         usb_kill_anchored_urbs(&data->intr_anchor);
 958
 959         return 0;
 960 }
 961
 962 static int btusb_resume(struct usb_interface *intf)
 963 {
 964         struct btusb_data *data = usb_get_intfdata(intf);
 965         struct hci_dev *hdev = data->hdev;
 966         int err;
 967
 968         BT_DBG("intf %p", intf);
 969
 970         if (--data->suspend_count)
 971                 return 0;
 972
 973         if (!test_bit(HCI_RUNNING, &hdev->flags))
 974                 return 0;
 975
 976         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
 977                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
 978                 if (err < 0) {
 979                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 980                         return err;
 981                 }
 982         }
 983
 984         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
 985                 if (btusb_submit_bulk_urb(hdev, GFP_NOIO) < 0)
 986                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 987                 else
 988                         btusb_submit_bulk_urb(hdev, GFP_NOIO);
 989         }
 990
 991         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 992                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
 993                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 994                 else
 995                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
 996         }
 997
 998         return 0;
 999 }
1000
1001 static struct usb_driver btusb_driver = {
1002         .name           = "btusb",
1003         .probe          = btusb_probe,
1004         .disconnect     = btusb_disconnect,
1005         .suspend        = btusb_suspend,
1006         .resume         = btusb_resume,
1007         .id_table       = btusb_table,
1008 };
1009
1010 static int __init btusb_init(void)
1011 {
1012         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1013
1014         return usb_register(&btusb_driver);
1015 }
1016
1017 static void __exit btusb_exit(void)
1018 {
1019         usb_deregister(&btusb_driver);
1020 }
1021
1022 module_init(btusb_init);
1023 module_exit(btusb_exit);
1024
1025 module_param(ignore_dga, bool, 0644);
1026 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1027
1028 module_param(ignore_csr, bool, 0644);
1029 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1030
1031 module_param(ignore_sniffer, bool, 0644);
1032 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1033
1034 module_param(disable_scofix, bool, 0644);
1035 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1036
1037 module_param(force_scofix, bool, 0644);
1038 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1039
1040 module_param(reset, bool, 0644);
1041 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1042
1043 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1044 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1045 MODULE_VERSION(VERSION);
1046 MODULE_LICENSE("GPL");