drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <[email protected]>
   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/module.h>
  25 #include <linux/usb.h>
  26
  27 #include <net/bluetooth/bluetooth.h>
  28 #include <net/bluetooth/hci_core.h>
  29
  30 #define VERSION "0.6"
  31
  32 static bool ignore_dga;
  33 static bool ignore_csr;
  34 static bool ignore_sniffer;
  35 static bool disable_scofix;
  36 static bool force_scofix;
  37
  38 static bool reset = 1;
  39
  40 static struct usb_driver btusb_driver;
  41
  42 #define BTUSB_IGNORE            0x01
  43 #define BTUSB_DIGIANSWER        0x02
  44 #define BTUSB_CSR               0x04
  45 #define BTUSB_SNIFFER           0x08
  46 #define BTUSB_BCM92035          0x10
  47 #define BTUSB_BROKEN_ISOC       0x20
  48 #define BTUSB_WRONG_SCO_MTU     0x40
  49 #define BTUSB_ATH3012           0x80
  50
  51 static struct usb_device_id btusb_table[] = {
  52         /* Generic Bluetooth USB device */
  53         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  54
  55         /* Apple-specific (Broadcom) devices */
  56         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  57
  58         /* Broadcom SoftSailing reporting vendor specific */
  59         { USB_DEVICE(0x0a5c, 0x21e1) },
  60
  61         /* Apple MacBookPro 7,1 */
  62         { USB_DEVICE(0x05ac, 0x8213) },
  63
  64         /* Apple iMac11,1 */
  65         { USB_DEVICE(0x05ac, 0x8215) },
  66
  67         /* Apple MacBookPro6,2 */
  68         { USB_DEVICE(0x05ac, 0x8218) },
  69
  70         /* Apple MacBookAir3,1, MacBookAir3,2 */
  71         { USB_DEVICE(0x05ac, 0x821b) },
  72
  73         /* Apple MacBookAir4,1 */
  74         { USB_DEVICE(0x05ac, 0x821f) },
  75
  76         /* Apple MacBookPro8,2 */
  77         { USB_DEVICE(0x05ac, 0x821a) },
  78
  79         /* Apple MacMini5,1 */
  80         { USB_DEVICE(0x05ac, 0x8281) },
  81
  82         /* AVM BlueFRITZ! USB v2.0 */
  83         { USB_DEVICE(0x057c, 0x3800) },
  84
  85         /* Bluetooth Ultraport Module from IBM */
  86         { USB_DEVICE(0x04bf, 0x030a) },
  87
  88         /* ALPS Modules with non-standard id */
  89         { USB_DEVICE(0x044e, 0x3001) },
  90         { USB_DEVICE(0x044e, 0x3002) },
  91
  92         /* Ericsson with non-standard id */
  93         { USB_DEVICE(0x0bdb, 0x1002) },
  94
  95         /* Canyon CN-BTU1 with HID interfaces */
  96         { USB_DEVICE(0x0c10, 0x0000) },
  97
  98         /* Broadcom BCM20702A0 */
  99         { USB_DEVICE(0x0b05, 0x17b5) },
 100         { USB_DEVICE(0x04ca, 0x2003) },
 101         { USB_DEVICE(0x0489, 0xe042) },
 102         { USB_DEVICE(0x413c, 0x8197) },
 103
 104         /* Foxconn - Hon Hai */
 105         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 106
 107         /*Broadcom devices with vendor specific id */
 108         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 109
 110         { }     /* Terminating entry */
 111 };
 112
 113 MODULE_DEVICE_TABLE(usb, btusb_table);
 114
 115 static struct usb_device_id blacklist_table[] = {
 116         /* CSR BlueCore devices */
 117         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 118
 119         /* Broadcom BCM2033 without firmware */
 120         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 121
 122         /* Atheros 3011 with sflash firmware */
 123         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 124         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 125         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 126         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 127         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 128         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 129
 130         /* Atheros AR9285 Malbec with sflash firmware */
 131         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 132
 133         /* Atheros 3012 with sflash firmware */
 134         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 135         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 136         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 137         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 138         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 139         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 140         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 141         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 142
 143         /* Atheros AR5BBU12 with sflash firmware */
 144         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 145
 146         /* Atheros AR5BBU12 with sflash firmware */
 147         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 149
 150         /* Broadcom BCM2035 */
 151         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 152         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 153         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 154
 155         /* Broadcom BCM2045 */
 156         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 157         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 158
 159         /* IBM/Lenovo ThinkPad with Broadcom chip */
 160         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 161         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 162
 163         /* HP laptop with Broadcom chip */
 164         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 165
 166         /* Dell laptop with Broadcom chip */
 167         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 168
 169         /* Dell Wireless 370 and 410 devices */
 170         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 171         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 172
 173         /* Belkin F8T012 and F8T013 devices */
 174         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 175         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 176
 177         /* Asus WL-BTD202 device */
 178         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 179
 180         /* Kensington Bluetooth USB adapter */
 181         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 182
 183         /* RTX Telecom based adapters with buggy SCO support */
 184         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 185         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 186
 187         /* CONWISE Technology based adapters with buggy SCO support */
 188         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 189
 190         /* Digianswer devices */
 191         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 192         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 193
 194         /* CSR BlueCore Bluetooth Sniffer */
 195         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 196
 197         /* Frontline ComProbe Bluetooth Sniffer */
 198         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 199
 200         { }     /* Terminating entry */
 201 };
 202
 203 #define BTUSB_MAX_ISOC_FRAMES   10
 204
 205 #define BTUSB_INTR_RUNNING      0
 206 #define BTUSB_BULK_RUNNING      1
 207 #define BTUSB_ISOC_RUNNING      2
 208 #define BTUSB_SUSPENDING        3
 209 #define BTUSB_DID_ISO_RESUME    4
 210
 211 struct btusb_data {
 212         struct hci_dev       *hdev;
 213         struct usb_device    *udev;
 214         struct usb_interface *intf;
 215         struct usb_interface *isoc;
 216
 217         spinlock_t lock;
 218
 219         unsigned long flags;
 220
 221         struct work_struct work;
 222         struct work_struct waker;
 223
 224         struct usb_anchor tx_anchor;
 225         struct usb_anchor intr_anchor;
 226         struct usb_anchor bulk_anchor;
 227         struct usb_anchor isoc_anchor;
 228         struct usb_anchor deferred;
 229         int tx_in_flight;
 230         spinlock_t txlock;
 231
 232         struct usb_endpoint_descriptor *intr_ep;
 233         struct usb_endpoint_descriptor *bulk_tx_ep;
 234         struct usb_endpoint_descriptor *bulk_rx_ep;
 235         struct usb_endpoint_descriptor *isoc_tx_ep;
 236         struct usb_endpoint_descriptor *isoc_rx_ep;
 237
 238         __u8 cmdreq_type;
 239
 240         unsigned int sco_num;
 241         int isoc_altsetting;
 242         int suspend_count;
 243 };
 244
 245 static int inc_tx(struct btusb_data *data)
 246 {
 247         unsigned long flags;
 248         int rv;
 249
 250         spin_lock_irqsave(&data->txlock, flags);
 251         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 252         if (!rv)
 253                 data->tx_in_flight++;
 254         spin_unlock_irqrestore(&data->txlock, flags);
 255
 256         return rv;
 257 }
 258
 259 static void btusb_intr_complete(struct urb *urb)
 260 {
 261         struct hci_dev *hdev = urb->context;
 262         struct btusb_data *data = hci_get_drvdata(hdev);
 263         int err;
 264
 265         BT_DBG("%s urb %p status %d count %d", hdev->name,
 266                                         urb, urb->status, urb->actual_length);
 267
 268         if (!test_bit(HCI_RUNNING, &hdev->flags))
 269                 return;
 270
 271         if (urb->status == 0) {
 272                 hdev->stat.byte_rx += urb->actual_length;
 273
 274                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 275                                                 urb->transfer_buffer,
 276                                                 urb->actual_length) < 0) {
 277                         BT_ERR("%s corrupted event packet", hdev->name);
 278                         hdev->stat.err_rx++;
 279                 }
 280         }
 281
 282         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 283                 return;
 284
 285         usb_mark_last_busy(data->udev);
 286         usb_anchor_urb(urb, &data->intr_anchor);
 287
 288         err = usb_submit_urb(urb, GFP_ATOMIC);
 289         if (err < 0) {
 290                 /* -EPERM: urb is being killed;
 291                  * -ENODEV: device got disconnected */
 292                 if (err != -EPERM && err != -ENODEV)
 293                         BT_ERR("%s urb %p failed to resubmit (%d)",
 294                                                 hdev->name, urb, -err);
 295                 usb_unanchor_urb(urb);
 296         }
 297 }
 298
 299 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 300 {
 301         struct btusb_data *data = hci_get_drvdata(hdev);
 302         struct urb *urb;
 303         unsigned char *buf;
 304         unsigned int pipe;
 305         int err, size;
 306
 307         BT_DBG("%s", hdev->name);
 308
 309         if (!data->intr_ep)
 310                 return -ENODEV;
 311
 312         urb = usb_alloc_urb(0, mem_flags);
 313         if (!urb)
 314                 return -ENOMEM;
 315
 316         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 317
 318         buf = kmalloc(size, mem_flags);
 319         if (!buf) {
 320                 usb_free_urb(urb);
 321                 return -ENOMEM;
 322         }
 323
 324         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 325
 326         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 327                                                 btusb_intr_complete, hdev,
 328                                                 data->intr_ep->bInterval);
 329
 330         urb->transfer_flags |= URB_FREE_BUFFER;
 331
 332         usb_anchor_urb(urb, &data->intr_anchor);
 333
 334         err = usb_submit_urb(urb, mem_flags);
 335         if (err < 0) {
 336                 if (err != -EPERM && err != -ENODEV)
 337                         BT_ERR("%s urb %p submission failed (%d)",
 338                                                 hdev->name, urb, -err);
 339                 usb_unanchor_urb(urb);
 340         }
 341
 342         usb_free_urb(urb);
 343
 344         return err;
 345 }
 346
 347 static void btusb_bulk_complete(struct urb *urb)
 348 {
 349         struct hci_dev *hdev = urb->context;
 350         struct btusb_data *data = hci_get_drvdata(hdev);
 351         int err;
 352
 353         BT_DBG("%s urb %p status %d count %d", hdev->name,
 354                                         urb, urb->status, urb->actual_length);
 355
 356         if (!test_bit(HCI_RUNNING, &hdev->flags))
 357                 return;
 358
 359         if (urb->status == 0) {
 360                 hdev->stat.byte_rx += urb->actual_length;
 361
 362                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 363                                                 urb->transfer_buffer,
 364                                                 urb->actual_length) < 0) {
 365                         BT_ERR("%s corrupted ACL packet", hdev->name);
 366                         hdev->stat.err_rx++;
 367                 }
 368         }
 369
 370         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 371                 return;
 372
 373         usb_anchor_urb(urb, &data->bulk_anchor);
 374         usb_mark_last_busy(data->udev);
 375
 376         err = usb_submit_urb(urb, GFP_ATOMIC);
 377         if (err < 0) {
 378                 /* -EPERM: urb is being killed;
 379                  * -ENODEV: device got disconnected */
 380                 if (err != -EPERM && err != -ENODEV)
 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 int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 388 {
 389         struct btusb_data *data = hci_get_drvdata(hdev);
 390         struct urb *urb;
 391         unsigned char *buf;
 392         unsigned int pipe;
 393         int err, size = HCI_MAX_FRAME_SIZE;
 394
 395         BT_DBG("%s", hdev->name);
 396
 397         if (!data->bulk_rx_ep)
 398                 return -ENODEV;
 399
 400         urb = usb_alloc_urb(0, mem_flags);
 401         if (!urb)
 402                 return -ENOMEM;
 403
 404         buf = kmalloc(size, mem_flags);
 405         if (!buf) {
 406                 usb_free_urb(urb);
 407                 return -ENOMEM;
 408         }
 409
 410         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 411
 412         usb_fill_bulk_urb(urb, data->udev, pipe,
 413                                         buf, size, btusb_bulk_complete, hdev);
 414
 415         urb->transfer_flags |= URB_FREE_BUFFER;
 416
 417         usb_mark_last_busy(data->udev);
 418         usb_anchor_urb(urb, &data->bulk_anchor);
 419
 420         err = usb_submit_urb(urb, mem_flags);
 421         if (err < 0) {
 422                 if (err != -EPERM && err != -ENODEV)
 423                         BT_ERR("%s urb %p submission failed (%d)",
 424                                                 hdev->name, urb, -err);
 425                 usb_unanchor_urb(urb);
 426         }
 427
 428         usb_free_urb(urb);
 429
 430         return err;
 431 }
 432
 433 static void btusb_isoc_complete(struct urb *urb)
 434 {
 435         struct hci_dev *hdev = urb->context;
 436         struct btusb_data *data = hci_get_drvdata(hdev);
 437         int i, err;
 438
 439         BT_DBG("%s urb %p status %d count %d", hdev->name,
 440                                         urb, urb->status, urb->actual_length);
 441
 442         if (!test_bit(HCI_RUNNING, &hdev->flags))
 443                 return;
 444
 445         if (urb->status == 0) {
 446                 for (i = 0; i < urb->number_of_packets; i++) {
 447                         unsigned int offset = urb->iso_frame_desc[i].offset;
 448                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 449
 450                         if (urb->iso_frame_desc[i].status)
 451                                 continue;
 452
 453                         hdev->stat.byte_rx += length;
 454
 455                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 456                                                 urb->transfer_buffer + offset,
 457                                                                 length) < 0) {
 458                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 459                                 hdev->stat.err_rx++;
 460                         }
 461                 }
 462         }
 463
 464         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 465                 return;
 466
 467         usb_anchor_urb(urb, &data->isoc_anchor);
 468
 469         err = usb_submit_urb(urb, GFP_ATOMIC);
 470         if (err < 0) {
 471                 /* -EPERM: urb is being killed;
 472                  * -ENODEV: device got disconnected */
 473                 if (err != -EPERM && err != -ENODEV)
 474                         BT_ERR("%s urb %p failed to resubmit (%d)",
 475                                                 hdev->name, urb, -err);
 476                 usb_unanchor_urb(urb);
 477         }
 478 }
 479
 480 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 481 {
 482         int i, offset = 0;
 483
 484         BT_DBG("len %d mtu %d", len, mtu);
 485
 486         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 487                                         i++, offset += mtu, len -= mtu) {
 488                 urb->iso_frame_desc[i].offset = offset;
 489                 urb->iso_frame_desc[i].length = mtu;
 490         }
 491
 492         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 493                 urb->iso_frame_desc[i].offset = offset;
 494                 urb->iso_frame_desc[i].length = len;
 495                 i++;
 496         }
 497
 498         urb->number_of_packets = i;
 499 }
 500
 501 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 502 {
 503         struct btusb_data *data = hci_get_drvdata(hdev);
 504         struct urb *urb;
 505         unsigned char *buf;
 506         unsigned int pipe;
 507         int err, size;
 508
 509         BT_DBG("%s", hdev->name);
 510
 511         if (!data->isoc_rx_ep)
 512                 return -ENODEV;
 513
 514         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 515         if (!urb)
 516                 return -ENOMEM;
 517
 518         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 519                                                 BTUSB_MAX_ISOC_FRAMES;
 520
 521         buf = kmalloc(size, mem_flags);
 522         if (!buf) {
 523                 usb_free_urb(urb);
 524                 return -ENOMEM;
 525         }
 526
 527         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 528
 529         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 530                                 hdev, data->isoc_rx_ep->bInterval);
 531
 532         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 533
 534         __fill_isoc_descriptor(urb, size,
 535                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 536
 537         usb_anchor_urb(urb, &data->isoc_anchor);
 538
 539         err = usb_submit_urb(urb, mem_flags);
 540         if (err < 0) {
 541                 if (err != -EPERM && err != -ENODEV)
 542                         BT_ERR("%s urb %p submission failed (%d)",
 543                                                 hdev->name, urb, -err);
 544                 usb_unanchor_urb(urb);
 545         }
 546
 547         usb_free_urb(urb);
 548
 549         return err;
 550 }
 551
 552 static void btusb_tx_complete(struct urb *urb)
 553 {
 554         struct sk_buff *skb = urb->context;
 555         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 556         struct btusb_data *data = hci_get_drvdata(hdev);
 557
 558         BT_DBG("%s urb %p status %d count %d", hdev->name,
 559                                         urb, urb->status, urb->actual_length);
 560
 561         if (!test_bit(HCI_RUNNING, &hdev->flags))
 562                 goto done;
 563
 564         if (!urb->status)
 565                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 566         else
 567                 hdev->stat.err_tx++;
 568
 569 done:
 570         spin_lock(&data->txlock);
 571         data->tx_in_flight--;
 572         spin_unlock(&data->txlock);
 573
 574         kfree(urb->setup_packet);
 575
 576         kfree_skb(skb);
 577 }
 578
 579 static void btusb_isoc_tx_complete(struct urb *urb)
 580 {
 581         struct sk_buff *skb = urb->context;
 582         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 583
 584         BT_DBG("%s urb %p status %d count %d", hdev->name,
 585                                         urb, urb->status, urb->actual_length);
 586
 587         if (!test_bit(HCI_RUNNING, &hdev->flags))
 588                 goto done;
 589
 590         if (!urb->status)
 591                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 592         else
 593                 hdev->stat.err_tx++;
 594
 595 done:
 596         kfree(urb->setup_packet);
 597
 598         kfree_skb(skb);
 599 }
 600
 601 static int btusb_open(struct hci_dev *hdev)
 602 {
 603         struct btusb_data *data = hci_get_drvdata(hdev);
 604         int err;
 605
 606         BT_DBG("%s", hdev->name);
 607
 608         err = usb_autopm_get_interface(data->intf);
 609         if (err < 0)
 610                 return err;
 611
 612         data->intf->needs_remote_wakeup = 1;
 613
 614         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 615                 goto done;
 616
 617         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 618                 goto done;
 619
 620         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 621         if (err < 0)
 622                 goto failed;
 623
 624         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 625         if (err < 0) {
 626                 usb_kill_anchored_urbs(&data->intr_anchor);
 627                 goto failed;
 628         }
 629
 630         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 631         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 632
 633 done:
 634         usb_autopm_put_interface(data->intf);
 635         return 0;
 636
 637 failed:
 638         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 639         clear_bit(HCI_RUNNING, &hdev->flags);
 640         usb_autopm_put_interface(data->intf);
 641         return err;
 642 }
 643
 644 static void btusb_stop_traffic(struct btusb_data *data)
 645 {
 646         usb_kill_anchored_urbs(&data->intr_anchor);
 647         usb_kill_anchored_urbs(&data->bulk_anchor);
 648         usb_kill_anchored_urbs(&data->isoc_anchor);
 649 }
 650
 651 static int btusb_close(struct hci_dev *hdev)
 652 {
 653         struct btusb_data *data = hci_get_drvdata(hdev);
 654         int err;
 655
 656         BT_DBG("%s", hdev->name);
 657
 658         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 659                 return 0;
 660
 661         cancel_work_sync(&data->work);
 662         cancel_work_sync(&data->waker);
 663
 664         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 665         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 666         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 667
 668         btusb_stop_traffic(data);
 669         err = usb_autopm_get_interface(data->intf);
 670         if (err < 0)
 671                 goto failed;
 672
 673         data->intf->needs_remote_wakeup = 0;
 674         usb_autopm_put_interface(data->intf);
 675
 676 failed:
 677         usb_scuttle_anchored_urbs(&data->deferred);
 678         return 0;
 679 }
 680
 681 static int btusb_flush(struct hci_dev *hdev)
 682 {
 683         struct btusb_data *data = hci_get_drvdata(hdev);
 684
 685         BT_DBG("%s", hdev->name);
 686
 687         usb_kill_anchored_urbs(&data->tx_anchor);
 688
 689         return 0;
 690 }
 691
 692 static int btusb_send_frame(struct sk_buff *skb)
 693 {
 694         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 695         struct btusb_data *data = hci_get_drvdata(hdev);
 696         struct usb_ctrlrequest *dr;
 697         struct urb *urb;
 698         unsigned int pipe;
 699         int err;
 700
 701         BT_DBG("%s", hdev->name);
 702
 703         if (!test_bit(HCI_RUNNING, &hdev->flags))
 704                 return -EBUSY;
 705
 706         switch (bt_cb(skb)->pkt_type) {
 707         case HCI_COMMAND_PKT:
 708                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 709                 if (!urb)
 710                         return -ENOMEM;
 711
 712                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 713                 if (!dr) {
 714                         usb_free_urb(urb);
 715                         return -ENOMEM;
 716                 }
 717
 718                 dr->bRequestType = data->cmdreq_type;
 719                 dr->bRequest     = 0;
 720                 dr->wIndex       = 0;
 721                 dr->wValue       = 0;
 722                 dr->wLength      = __cpu_to_le16(skb->len);
 723
 724                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 725
 726                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 727                                 skb->data, skb->len, btusb_tx_complete, skb);
 728
 729                 hdev->stat.cmd_tx++;
 730                 break;
 731
 732         case HCI_ACLDATA_PKT:
 733                 if (!data->bulk_tx_ep)
 734                         return -ENODEV;
 735
 736                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 737                 if (!urb)
 738                         return -ENOMEM;
 739
 740                 pipe = usb_sndbulkpipe(data->udev,
 741                                         data->bulk_tx_ep->bEndpointAddress);
 742
 743                 usb_fill_bulk_urb(urb, data->udev, pipe,
 744                                 skb->data, skb->len, btusb_tx_complete, skb);
 745
 746                 hdev->stat.acl_tx++;
 747                 break;
 748
 749         case HCI_SCODATA_PKT:
 750                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 751                         return -ENODEV;
 752
 753                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 754                 if (!urb)
 755                         return -ENOMEM;
 756
 757                 pipe = usb_sndisocpipe(data->udev,
 758                                         data->isoc_tx_ep->bEndpointAddress);
 759
 760                 usb_fill_int_urb(urb, data->udev, pipe,
 761                                 skb->data, skb->len, btusb_isoc_tx_complete,
 762                                 skb, data->isoc_tx_ep->bInterval);
 763
 764                 urb->transfer_flags  = URB_ISO_ASAP;
 765
 766                 __fill_isoc_descriptor(urb, skb->len,
 767                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 768
 769                 hdev->stat.sco_tx++;
 770                 goto skip_waking;
 771
 772         default:
 773                 return -EILSEQ;
 774         }
 775
 776         err = inc_tx(data);
 777         if (err) {
 778                 usb_anchor_urb(urb, &data->deferred);
 779                 schedule_work(&data->waker);
 780                 err = 0;
 781                 goto done;
 782         }
 783
 784 skip_waking:
 785         usb_anchor_urb(urb, &data->tx_anchor);
 786
 787         err = usb_submit_urb(urb, GFP_ATOMIC);
 788         if (err < 0) {
 789                 if (err != -EPERM && err != -ENODEV)
 790                         BT_ERR("%s urb %p submission failed (%d)",
 791                                                 hdev->name, urb, -err);
 792                 kfree(urb->setup_packet);
 793                 usb_unanchor_urb(urb);
 794         } else {
 795                 usb_mark_last_busy(data->udev);
 796         }
 797
 798 done:
 799         usb_free_urb(urb);
 800         return err;
 801 }
 802
 803 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 804 {
 805         struct btusb_data *data = hci_get_drvdata(hdev);
 806
 807         BT_DBG("%s evt %d", hdev->name, evt);
 808
 809         if (hdev->conn_hash.sco_num != data->sco_num) {
 810                 data->sco_num = hdev->conn_hash.sco_num;
 811                 schedule_work(&data->work);
 812         }
 813 }
 814
 815 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 816 {
 817         struct btusb_data *data = hci_get_drvdata(hdev);
 818         struct usb_interface *intf = data->isoc;
 819         struct usb_endpoint_descriptor *ep_desc;
 820         int i, err;
 821
 822         if (!data->isoc)
 823                 return -ENODEV;
 824
 825         err = usb_set_interface(data->udev, 1, altsetting);
 826         if (err < 0) {
 827                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 828                 return err;
 829         }
 830
 831         data->isoc_altsetting = altsetting;
 832
 833         data->isoc_tx_ep = NULL;
 834         data->isoc_rx_ep = NULL;
 835
 836         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 837                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 838
 839                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 840                         data->isoc_tx_ep = ep_desc;
 841                         continue;
 842                 }
 843
 844                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 845                         data->isoc_rx_ep = ep_desc;
 846                         continue;
 847                 }
 848         }
 849
 850         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 851                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 852                 return -ENODEV;
 853         }
 854
 855         return 0;
 856 }
 857
 858 static void btusb_work(struct work_struct *work)
 859 {
 860         struct btusb_data *data = container_of(work, struct btusb_data, work);
 861         struct hci_dev *hdev = data->hdev;
 862         int new_alts;
 863         int err;
 864
 865         if (hdev->conn_hash.sco_num > 0) {
 866                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 867                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 868                         if (err < 0) {
 869                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 870                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 871                                 return;
 872                         }
 873
 874                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 875                 }
 876
 877                 if (hdev->voice_setting & 0x0020) {
 878                         static const int alts[3] = { 2, 4, 5 };
 879                         new_alts = alts[hdev->conn_hash.sco_num - 1];
 880                 } else {
 881                         new_alts = hdev->conn_hash.sco_num;
 882                 }
 883
 884                 if (data->isoc_altsetting != new_alts) {
 885                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 886                         usb_kill_anchored_urbs(&data->isoc_anchor);
 887
 888                         if (__set_isoc_interface(hdev, new_alts) < 0)
 889                                 return;
 890                 }
 891
 892                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 893                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 894                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 895                         else
 896                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 897                 }
 898         } else {
 899                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 900                 usb_kill_anchored_urbs(&data->isoc_anchor);
 901
 902                 __set_isoc_interface(hdev, 0);
 903                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 904                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 905         }
 906 }
 907
 908 static void btusb_waker(struct work_struct *work)
 909 {
 910         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 911         int err;
 912
 913         err = usb_autopm_get_interface(data->intf);
 914         if (err < 0)
 915                 return;
 916
 917         usb_autopm_put_interface(data->intf);
 918 }
 919
 920 static int btusb_probe(struct usb_interface *intf,
 921                                 const struct usb_device_id *id)
 922 {
 923         struct usb_endpoint_descriptor *ep_desc;
 924         struct btusb_data *data;
 925         struct hci_dev *hdev;
 926         int i, err;
 927
 928         BT_DBG("intf %p id %p", intf, id);
 929
 930         /* interface numbers are hardcoded in the spec */
 931         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 932                 return -ENODEV;
 933
 934         if (!id->driver_info) {
 935                 const struct usb_device_id *match;
 936                 match = usb_match_id(intf, blacklist_table);
 937                 if (match)
 938                         id = match;
 939         }
 940
 941         if (id->driver_info == BTUSB_IGNORE)
 942                 return -ENODEV;
 943
 944         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 945                 return -ENODEV;
 946
 947         if (ignore_csr && id->driver_info & BTUSB_CSR)
 948                 return -ENODEV;
 949
 950         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 951                 return -ENODEV;
 952
 953         if (id->driver_info & BTUSB_ATH3012) {
 954                 struct usb_device *udev = interface_to_usbdev(intf);
 955
 956                 /* Old firmware would otherwise let ath3k driver load
 957                  * patch and sysconfig files */
 958                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 959                         return -ENODEV;
 960         }
 961
 962         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
 963         if (!data)
 964                 return -ENOMEM;
 965
 966         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 967                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 968
 969                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 970                         data->intr_ep = ep_desc;
 971                         continue;
 972                 }
 973
 974                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 975                         data->bulk_tx_ep = ep_desc;
 976                         continue;
 977                 }
 978
 979                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 980                         data->bulk_rx_ep = ep_desc;
 981                         continue;
 982                 }
 983         }
 984
 985         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
 986                 return -ENODEV;
 987
 988         data->cmdreq_type = USB_TYPE_CLASS;
 989
 990         data->udev = interface_to_usbdev(intf);
 991         data->intf = intf;
 992
 993         spin_lock_init(&data->lock);
 994
 995         INIT_WORK(&data->work, btusb_work);
 996         INIT_WORK(&data->waker, btusb_waker);
 997         spin_lock_init(&data->txlock);
 998
 999         init_usb_anchor(&data->tx_anchor);
1000         init_usb_anchor(&data->intr_anchor);
1001         init_usb_anchor(&data->bulk_anchor);
1002         init_usb_anchor(&data->isoc_anchor);
1003         init_usb_anchor(&data->deferred);
1004
1005         hdev = hci_alloc_dev();
1006         if (!hdev)
1007                 return -ENOMEM;
1008
1009         hdev->bus = HCI_USB;
1010         hci_set_drvdata(hdev, data);
1011
1012         data->hdev = hdev;
1013
1014         SET_HCIDEV_DEV(hdev, &intf->dev);
1015
1016         hdev->open     = btusb_open;
1017         hdev->close    = btusb_close;
1018         hdev->flush    = btusb_flush;
1019         hdev->send     = btusb_send_frame;
1020         hdev->notify   = btusb_notify;
1021
1022         /* Interface numbers are hardcoded in the specification */
1023         data->isoc = usb_ifnum_to_if(data->udev, 1);
1024
1025         if (!reset)
1026                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1027
1028         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1029                 if (!disable_scofix)
1030                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1031         }
1032
1033         if (id->driver_info & BTUSB_BROKEN_ISOC)
1034                 data->isoc = NULL;
1035
1036         if (id->driver_info & BTUSB_DIGIANSWER) {
1037                 data->cmdreq_type = USB_TYPE_VENDOR;
1038                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1039         }
1040
1041         if (id->driver_info & BTUSB_CSR) {
1042                 struct usb_device *udev = data->udev;
1043
1044                 /* Old firmware would otherwise execute USB reset */
1045                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1046                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1047         }
1048
1049         if (id->driver_info & BTUSB_SNIFFER) {
1050                 struct usb_device *udev = data->udev;
1051
1052                 /* New sniffer firmware has crippled HCI interface */
1053                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1054                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1055
1056                 data->isoc = NULL;
1057         }
1058
1059         if (id->driver_info & BTUSB_BCM92035) {
1060                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1061                 struct sk_buff *skb;
1062
1063                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1064                 if (skb) {
1065                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1066                         skb_queue_tail(&hdev->driver_init, skb);
1067                 }
1068         }
1069
1070         if (data->isoc) {
1071                 err = usb_driver_claim_interface(&btusb_driver,
1072                                                         data->isoc, data);
1073                 if (err < 0) {
1074                         hci_free_dev(hdev);
1075                         return err;
1076                 }
1077         }
1078
1079         err = hci_register_dev(hdev);
1080         if (err < 0) {
1081                 hci_free_dev(hdev);
1082                 return err;
1083         }
1084
1085         usb_set_intfdata(intf, data);
1086
1087         return 0;
1088 }
1089
1090 static void btusb_disconnect(struct usb_interface *intf)
1091 {
1092         struct btusb_data *data = usb_get_intfdata(intf);
1093         struct hci_dev *hdev;
1094
1095         BT_DBG("intf %p", intf);
1096
1097         if (!data)
1098                 return;
1099
1100         hdev = data->hdev;
1101         usb_set_intfdata(data->intf, NULL);
1102
1103         if (data->isoc)
1104                 usb_set_intfdata(data->isoc, NULL);
1105
1106         hci_unregister_dev(hdev);
1107
1108         if (intf == data->isoc)
1109                 usb_driver_release_interface(&btusb_driver, data->intf);
1110         else if (data->isoc)
1111                 usb_driver_release_interface(&btusb_driver, data->isoc);
1112
1113         hci_free_dev(hdev);
1114 }
1115
1116 #ifdef CONFIG_PM
1117 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1118 {
1119         struct btusb_data *data = usb_get_intfdata(intf);
1120
1121         BT_DBG("intf %p", intf);
1122
1123         if (data->suspend_count++)
1124                 return 0;
1125
1126         spin_lock_irq(&data->txlock);
1127         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1128                 set_bit(BTUSB_SUSPENDING, &data->flags);
1129                 spin_unlock_irq(&data->txlock);
1130         } else {
1131                 spin_unlock_irq(&data->txlock);
1132                 data->suspend_count--;
1133                 return -EBUSY;
1134         }
1135
1136         cancel_work_sync(&data->work);
1137
1138         btusb_stop_traffic(data);
1139         usb_kill_anchored_urbs(&data->tx_anchor);
1140
1141         return 0;
1142 }
1143
1144 static void play_deferred(struct btusb_data *data)
1145 {
1146         struct urb *urb;
1147         int err;
1148
1149         while ((urb = usb_get_from_anchor(&data->deferred))) {
1150                 err = usb_submit_urb(urb, GFP_ATOMIC);
1151                 if (err < 0)
1152                         break;
1153
1154                 data->tx_in_flight++;
1155         }
1156         usb_scuttle_anchored_urbs(&data->deferred);
1157 }
1158
1159 static int btusb_resume(struct usb_interface *intf)
1160 {
1161         struct btusb_data *data = usb_get_intfdata(intf);
1162         struct hci_dev *hdev = data->hdev;
1163         int err = 0;
1164
1165         BT_DBG("intf %p", intf);
1166
1167         if (--data->suspend_count)
1168                 return 0;
1169
1170         if (!test_bit(HCI_RUNNING, &hdev->flags))
1171                 goto done;
1172
1173         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1174                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1175                 if (err < 0) {
1176                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1177                         goto failed;
1178                 }
1179         }
1180
1181         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1182                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1183                 if (err < 0) {
1184                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1185                         goto failed;
1186                 }
1187
1188                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1189         }
1190
1191         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1192                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1193                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1194                 else
1195                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1196         }
1197
1198         spin_lock_irq(&data->txlock);
1199         play_deferred(data);
1200         clear_bit(BTUSB_SUSPENDING, &data->flags);
1201         spin_unlock_irq(&data->txlock);
1202         schedule_work(&data->work);
1203
1204         return 0;
1205
1206 failed:
1207         usb_scuttle_anchored_urbs(&data->deferred);
1208 done:
1209         spin_lock_irq(&data->txlock);
1210         clear_bit(BTUSB_SUSPENDING, &data->flags);
1211         spin_unlock_irq(&data->txlock);
1212
1213         return err;
1214 }
1215 #endif
1216
1217 static struct usb_driver btusb_driver = {
1218         .name           = "btusb",
1219         .probe          = btusb_probe,
1220         .disconnect     = btusb_disconnect,
1221 #ifdef CONFIG_PM
1222         .suspend        = btusb_suspend,
1223         .resume         = btusb_resume,
1224 #endif
1225         .id_table       = btusb_table,
1226         .supports_autosuspend = 1,
1227         .disable_hub_initiated_lpm = 1,
1228 };
1229
1230 module_usb_driver(btusb_driver);
1231
1232 module_param(ignore_dga, bool, 0644);
1233 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1234
1235 module_param(ignore_csr, bool, 0644);
1236 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1237
1238 module_param(ignore_sniffer, bool, 0644);
1239 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1240
1241 module_param(disable_scofix, bool, 0644);
1242 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1243
1244 module_param(force_scofix, bool, 0644);
1245 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1246
1247 module_param(reset, bool, 0644);
1248 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1249
1250 MODULE_AUTHOR("Marcel Holtmann <[email protected]>");
1251 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1252 MODULE_VERSION(VERSION);
1253 MODULE_LICENSE("GPL");