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 "0.6"
  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 #define BTUSB_ATH3012           0x80
  58 #define BTUSB_INTEL_BOOT        0x200
  59
  60 static struct usb_device_id btusb_table[] = {
  61         /* Generic Bluetooth USB device */
  62         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  63
  64         /* Apple-specific (Broadcom) devices */
  65         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  66
  67         /* MediaTek MT76x0E */
  68         { USB_DEVICE(0x0e8d, 0x763f) },
  69
  70         /* Broadcom SoftSailing reporting vendor specific */
  71         { USB_DEVICE(0x0a5c, 0x21e1) },
  72
  73         /* Apple MacBookPro 7,1 */
  74         { USB_DEVICE(0x05ac, 0x8213) },
  75
  76         /* Apple iMac11,1 */
  77         { USB_DEVICE(0x05ac, 0x8215) },
  78
  79         /* Apple MacBookPro6,2 */
  80         { USB_DEVICE(0x05ac, 0x8218) },
  81
  82         /* Apple MacBookAir3,1, MacBookAir3,2 */
  83         { USB_DEVICE(0x05ac, 0x821b) },
  84
  85         /* Apple MacBookAir4,1 */
  86         { USB_DEVICE(0x05ac, 0x821f) },
  87
  88         /* Apple MacBookPro8,2 */
  89         { USB_DEVICE(0x05ac, 0x821a) },
  90
  91         /* Apple MacMini5,1 */
  92         { USB_DEVICE(0x05ac, 0x8281) },
  93
  94         /* AVM BlueFRITZ! USB v2.0 */
  95         { USB_DEVICE(0x057c, 0x3800) },
  96
  97         /* Bluetooth Ultraport Module from IBM */
  98         { USB_DEVICE(0x04bf, 0x030a) },
  99
 100         /* ALPS Modules with non-standard id */
 101         { USB_DEVICE(0x044e, 0x3001) },
 102         { USB_DEVICE(0x044e, 0x3002) },
 103
 104         /* Ericsson with non-standard id */
 105         { USB_DEVICE(0x0bdb, 0x1002) },
 106
 107         /* Canyon CN-BTU1 with HID interfaces */
 108         { USB_DEVICE(0x0c10, 0x0000) },
 109
 110         /* Broadcom BCM20702A0 */
 111         { USB_DEVICE(0x0489, 0xe042) },
 112         { USB_DEVICE(0x04ca, 0x2003) },
 113         { USB_DEVICE(0x0b05, 0x17b5) },
 114         { USB_DEVICE(0x0b05, 0x17cb) },
 115         { USB_DEVICE(0x413c, 0x8197) },
 116
 117         /* Foxconn - Hon Hai */
 118         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 119
 120         /* Broadcom devices with vendor specific id */
 121         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 122
 123         /* ASUSTek Computer - Broadcom based */
 124         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
 125
 126         /* Belkin F8065bf - Broadcom based */
 127         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 128
 129         /* IMC Networks - Broadcom based */
 130         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 131
 132         /* Intel Bluetooth USB Bootloader (RAM module) */
 133         { USB_DEVICE(0x8087, 0x0a5a),
 134           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 135
 136         { }     /* Terminating entry */
 137 };
 138
 139 MODULE_DEVICE_TABLE(usb, btusb_table);
 140
 141 static struct usb_device_id blacklist_table[] = {
 142         /* CSR BlueCore devices */
 143         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 144
 145         /* Broadcom BCM2033 without firmware */
 146         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 147
 148         /* Atheros 3011 with sflash firmware */
 149         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 150         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 151         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 152         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 153         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 154         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 155         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 156
 157         /* Atheros AR9285 Malbec with sflash firmware */
 158         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 159
 160         /* Atheros 3012 with sflash firmware */
 161         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 206
 207         /* Atheros AR5BBU12 with sflash firmware */
 208         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 209
 210         /* Atheros AR5BBU12 with sflash firmware */
 211         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 213
 214         /* Broadcom BCM2035 */
 215         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 216         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 217         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 218
 219         /* Broadcom BCM2045 */
 220         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 221         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 222
 223         /* IBM/Lenovo ThinkPad with Broadcom chip */
 224         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 225         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 226
 227         /* HP laptop with Broadcom chip */
 228         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 229
 230         /* Dell laptop with Broadcom chip */
 231         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 232
 233         /* Dell Wireless 370 and 410 devices */
 234         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 235         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 236
 237         /* Belkin F8T012 and F8T013 devices */
 238         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 239         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 240
 241         /* Asus WL-BTD202 device */
 242         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 243
 244         /* Kensington Bluetooth USB adapter */
 245         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 246
 247         /* RTX Telecom based adapters with buggy SCO support */
 248         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 249         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 250
 251         /* CONWISE Technology based adapters with buggy SCO support */
 252         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 253
 254         /* Digianswer devices */
 255         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 256         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 257
 258         /* CSR BlueCore Bluetooth Sniffer */
 259         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 260
 261         /* Frontline ComProbe Bluetooth Sniffer */
 262         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 263
 264         { }     /* Terminating entry */
 265 };
 266
 267 #define BTUSB_MAX_ISOC_FRAMES   10
 268
 269 #define BTUSB_INTR_RUNNING      0
 270 #define BTUSB_BULK_RUNNING      1
 271 #define BTUSB_ISOC_RUNNING      2
 272 #define BTUSB_SUSPENDING        3
 273 #define BTUSB_DID_ISO_RESUME    4
 274
 275 struct btusb_data {
 276         struct hci_dev       *hdev;
 277         struct usb_device    *udev;
 278         struct usb_interface *intf;
 279         struct usb_interface *isoc;
 280
 281         spinlock_t lock;
 282
 283         unsigned long flags;
 284
 285         struct work_struct work;
 286         struct work_struct waker;
 287
 288         struct usb_anchor tx_anchor;
 289         struct usb_anchor intr_anchor;
 290         struct usb_anchor bulk_anchor;
 291         struct usb_anchor isoc_anchor;
 292         struct usb_anchor deferred;
 293         int tx_in_flight;
 294         spinlock_t txlock;
 295
 296         struct usb_endpoint_descriptor *intr_ep;
 297         struct usb_endpoint_descriptor *bulk_tx_ep;
 298         struct usb_endpoint_descriptor *bulk_rx_ep;
 299         struct usb_endpoint_descriptor *isoc_tx_ep;
 300         struct usb_endpoint_descriptor *isoc_rx_ep;
 301
 302         __u8 cmdreq_type;
 303
 304         unsigned int sco_num;
 305         int isoc_altsetting;
 306         int suspend_count;
 307 };
 308
 309 static int inc_tx(struct btusb_data *data)
 310 {
 311         unsigned long flags;
 312         int rv;
 313
 314         spin_lock_irqsave(&data->txlock, flags);
 315         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 316         if (!rv)
 317                 data->tx_in_flight++;
 318         spin_unlock_irqrestore(&data->txlock, flags);
 319
 320         return rv;
 321 }
 322
 323 static void btusb_intr_complete(struct urb *urb)
 324 {
 325         struct hci_dev *hdev = urb->context;
 326         struct btusb_data *data = hdev->driver_data;
 327         int err;
 328
 329         BT_DBG("%s urb %p status %d count %d", hdev->name,
 330                                         urb, urb->status, urb->actual_length);
 331
 332         if (!test_bit(HCI_RUNNING, &hdev->flags))
 333                 return;
 334
 335         if (urb->status == 0) {
 336                 hdev->stat.byte_rx += urb->actual_length;
 337
 338                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 339                                                 urb->transfer_buffer,
 340                                                 urb->actual_length) < 0) {
 341                         BT_ERR("%s corrupted event packet", hdev->name);
 342                         hdev->stat.err_rx++;
 343                 }
 344         } else if (urb->status == -ENOENT) {
 345                 /* Avoid suspend failed when usb_kill_urb */
 346                 return;
 347         }
 348
 349         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 350                 return;
 351
 352         usb_mark_last_busy(data->udev);
 353         usb_anchor_urb(urb, &data->intr_anchor);
 354
 355         err = usb_submit_urb(urb, GFP_ATOMIC);
 356         if (err < 0) {
 357                 /* -EPERM: urb is being killed;
 358                  * -ENODEV: device got disconnected */
 359                 if (err != -EPERM && err != -ENODEV)
 360                         BT_ERR("%s urb %p failed to resubmit (%d)",
 361                                                 hdev->name, urb, -err);
 362                 usb_unanchor_urb(urb);
 363         }
 364 }
 365
 366 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 367 {
 368         struct btusb_data *data = hdev->driver_data;
 369         struct urb *urb;
 370         unsigned char *buf;
 371         unsigned int pipe;
 372         int err, size;
 373
 374         BT_DBG("%s", hdev->name);
 375
 376         if (!data->intr_ep)
 377                 return -ENODEV;
 378
 379         urb = usb_alloc_urb(0, mem_flags);
 380         if (!urb)
 381                 return -ENOMEM;
 382
 383         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 384
 385         buf = kmalloc(size, mem_flags);
 386         if (!buf) {
 387                 usb_free_urb(urb);
 388                 return -ENOMEM;
 389         }
 390
 391         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 392
 393         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 394                                                 btusb_intr_complete, hdev,
 395                                                 data->intr_ep->bInterval);
 396
 397         urb->transfer_flags |= URB_FREE_BUFFER;
 398
 399         usb_anchor_urb(urb, &data->intr_anchor);
 400
 401         err = usb_submit_urb(urb, mem_flags);
 402         if (err < 0) {
 403                 BT_ERR("%s urb %p submission failed (%d)",
 404                                                 hdev->name, urb, -err);
 405                 usb_unanchor_urb(urb);
 406         }
 407
 408         usb_free_urb(urb);
 409
 410         return err;
 411 }
 412
 413 static void btusb_bulk_complete(struct urb *urb)
 414 {
 415         struct hci_dev *hdev = urb->context;
 416         struct btusb_data *data = hdev->driver_data;
 417         int err;
 418
 419         BT_DBG("%s urb %p status %d count %d", hdev->name,
 420                                         urb, urb->status, urb->actual_length);
 421
 422         if (!test_bit(HCI_RUNNING, &hdev->flags))
 423                 return;
 424
 425         if (urb->status == 0) {
 426                 hdev->stat.byte_rx += urb->actual_length;
 427
 428                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 429                                                 urb->transfer_buffer,
 430                                                 urb->actual_length) < 0) {
 431                         BT_ERR("%s corrupted ACL packet", hdev->name);
 432                         hdev->stat.err_rx++;
 433                 }
 434         } else if (urb->status == -ENOENT) {
 435                 /* Avoid suspend failed when usb_kill_urb */
 436                 return;
 437         }
 438
 439         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 440                 return;
 441
 442         usb_anchor_urb(urb, &data->bulk_anchor);
 443         usb_mark_last_busy(data->udev);
 444
 445         err = usb_submit_urb(urb, GFP_ATOMIC);
 446         if (err < 0) {
 447                 /* -EPERM: urb is being killed;
 448                  * -ENODEV: device got disconnected */
 449                 if (err != -EPERM && err != -ENODEV)
 450                         BT_ERR("%s urb %p failed to resubmit (%d)",
 451                                                 hdev->name, urb, -err);
 452                 usb_unanchor_urb(urb);
 453         }
 454 }
 455
 456 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 457 {
 458         struct btusb_data *data = hdev->driver_data;
 459         struct urb *urb;
 460         unsigned char *buf;
 461         unsigned int pipe;
 462         int err, size = HCI_MAX_FRAME_SIZE;
 463
 464         BT_DBG("%s", hdev->name);
 465
 466         if (!data->bulk_rx_ep)
 467                 return -ENODEV;
 468
 469         urb = usb_alloc_urb(0, mem_flags);
 470         if (!urb)
 471                 return -ENOMEM;
 472
 473         buf = kmalloc(size, mem_flags);
 474         if (!buf) {
 475                 usb_free_urb(urb);
 476                 return -ENOMEM;
 477         }
 478
 479         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 480
 481         usb_fill_bulk_urb(urb, data->udev, pipe,
 482                                         buf, size, btusb_bulk_complete, hdev);
 483
 484         urb->transfer_flags |= URB_FREE_BUFFER;
 485
 486         usb_mark_last_busy(data->udev);
 487         usb_anchor_urb(urb, &data->bulk_anchor);
 488
 489         err = usb_submit_urb(urb, mem_flags);
 490         if (err < 0) {
 491                 BT_ERR("%s urb %p submission failed (%d)",
 492                                                 hdev->name, urb, -err);
 493                 usb_unanchor_urb(urb);
 494         }
 495
 496         usb_free_urb(urb);
 497
 498         return err;
 499 }
 500
 501 static void btusb_isoc_complete(struct urb *urb)
 502 {
 503         struct hci_dev *hdev = urb->context;
 504         struct btusb_data *data = hdev->driver_data;
 505         int i, err;
 506
 507         BT_DBG("%s urb %p status %d count %d", hdev->name,
 508                                         urb, urb->status, urb->actual_length);
 509
 510         if (!test_bit(HCI_RUNNING, &hdev->flags))
 511                 return;
 512
 513         if (urb->status == 0) {
 514                 for (i = 0; i < urb->number_of_packets; i++) {
 515                         unsigned int offset = urb->iso_frame_desc[i].offset;
 516                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 517
 518                         if (urb->iso_frame_desc[i].status)
 519                                 continue;
 520
 521                         hdev->stat.byte_rx += length;
 522
 523                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 524                                                 urb->transfer_buffer + offset,
 525                                                                 length) < 0) {
 526                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 527                                 hdev->stat.err_rx++;
 528                         }
 529                 }
 530         } else if (urb->status == -ENOENT) {
 531                 /* Avoid suspend failed when usb_kill_urb */
 532                 return;
 533         }
 534
 535         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 536                 return;
 537
 538         usb_anchor_urb(urb, &data->isoc_anchor);
 539
 540         err = usb_submit_urb(urb, GFP_ATOMIC);
 541         if (err < 0) {
 542                 /* -EPERM: urb is being killed;
 543                  * -ENODEV: device got disconnected */
 544                 if (err != -EPERM && err != -ENODEV)
 545                         BT_ERR("%s urb %p failed to resubmit (%d)",
 546                                                 hdev->name, urb, -err);
 547                 usb_unanchor_urb(urb);
 548         }
 549 }
 550
 551 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 552 {
 553         int i, offset = 0;
 554
 555         BT_DBG("len %d mtu %d", len, mtu);
 556
 557         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 558                                         i++, offset += mtu, len -= mtu) {
 559                 urb->iso_frame_desc[i].offset = offset;
 560                 urb->iso_frame_desc[i].length = mtu;
 561         }
 562
 563         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 564                 urb->iso_frame_desc[i].offset = offset;
 565                 urb->iso_frame_desc[i].length = len;
 566                 i++;
 567         }
 568
 569         urb->number_of_packets = i;
 570 }
 571
 572 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 573 {
 574         struct btusb_data *data = hdev->driver_data;
 575         struct urb *urb;
 576         unsigned char *buf;
 577         unsigned int pipe;
 578         int err, size;
 579
 580         BT_DBG("%s", hdev->name);
 581
 582         if (!data->isoc_rx_ep)
 583                 return -ENODEV;
 584
 585         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 586         if (!urb)
 587                 return -ENOMEM;
 588
 589         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 590                                                 BTUSB_MAX_ISOC_FRAMES;
 591
 592         buf = kmalloc(size, mem_flags);
 593         if (!buf) {
 594                 usb_free_urb(urb);
 595                 return -ENOMEM;
 596         }
 597
 598         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 599
 600         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 601                                 hdev, data->isoc_rx_ep->bInterval);
 602
 603         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 604
 605         __fill_isoc_descriptor(urb, size,
 606                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 607
 608         usb_anchor_urb(urb, &data->isoc_anchor);
 609
 610         err = usb_submit_urb(urb, mem_flags);
 611         if (err < 0) {
 612                 BT_ERR("%s urb %p submission failed (%d)",
 613                                                 hdev->name, urb, -err);
 614                 usb_unanchor_urb(urb);
 615         }
 616
 617         usb_free_urb(urb);
 618
 619         return err;
 620 }
 621
 622 static void btusb_tx_complete(struct urb *urb)
 623 {
 624         struct sk_buff *skb = urb->context;
 625         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 626         struct btusb_data *data = hdev->driver_data;
 627
 628         BT_DBG("%s urb %p status %d count %d", hdev->name,
 629                                         urb, urb->status, urb->actual_length);
 630
 631         if (!test_bit(HCI_RUNNING, &hdev->flags))
 632                 goto done;
 633
 634         if (!urb->status)
 635                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 636         else
 637                 hdev->stat.err_tx++;
 638
 639 done:
 640         spin_lock(&data->txlock);
 641         data->tx_in_flight--;
 642         spin_unlock(&data->txlock);
 643
 644         kfree(urb->setup_packet);
 645
 646         kfree_skb(skb);
 647 }
 648
 649 static void btusb_isoc_tx_complete(struct urb *urb)
 650 {
 651         struct sk_buff *skb = urb->context;
 652         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 653
 654         BT_DBG("%s urb %p status %d count %d", hdev->name,
 655                                         urb, urb->status, urb->actual_length);
 656
 657         if (!test_bit(HCI_RUNNING, &hdev->flags))
 658                 goto done;
 659
 660         if (!urb->status)
 661                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 662         else
 663                 hdev->stat.err_tx++;
 664
 665 done:
 666         kfree(urb->setup_packet);
 667
 668         kfree_skb(skb);
 669 }
 670
 671 static int btusb_open(struct hci_dev *hdev)
 672 {
 673         struct btusb_data *data = hdev->driver_data;
 674         int err;
 675
 676         BT_DBG("%s", hdev->name);
 677
 678         err = usb_autopm_get_interface(data->intf);
 679         if (err < 0)
 680                 return err;
 681
 682         data->intf->needs_remote_wakeup = 1;
 683
 684         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 685                 goto done;
 686
 687         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 688                 goto done;
 689
 690         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 691         if (err < 0)
 692                 goto failed;
 693
 694         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 695         if (err < 0) {
 696                 usb_kill_anchored_urbs(&data->intr_anchor);
 697                 goto failed;
 698         }
 699
 700         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 701         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 702
 703 done:
 704         usb_autopm_put_interface(data->intf);
 705         return 0;
 706
 707 failed:
 708         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 709         clear_bit(HCI_RUNNING, &hdev->flags);
 710         usb_autopm_put_interface(data->intf);
 711         return err;
 712 }
 713
 714 static void btusb_stop_traffic(struct btusb_data *data)
 715 {
 716         usb_kill_anchored_urbs(&data->intr_anchor);
 717         usb_kill_anchored_urbs(&data->bulk_anchor);
 718         usb_kill_anchored_urbs(&data->isoc_anchor);
 719 }
 720
 721 static int btusb_close(struct hci_dev *hdev)
 722 {
 723         struct btusb_data *data = hdev->driver_data;
 724         int err;
 725
 726         BT_DBG("%s", hdev->name);
 727
 728         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 729                 return 0;
 730
 731         cancel_work_sync(&data->work);
 732         cancel_work_sync(&data->waker);
 733
 734         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 735         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 736         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 737
 738         btusb_stop_traffic(data);
 739         err = usb_autopm_get_interface(data->intf);
 740         if (err < 0)
 741                 goto failed;
 742
 743         data->intf->needs_remote_wakeup = 0;
 744         usb_autopm_put_interface(data->intf);
 745
 746 failed:
 747         usb_scuttle_anchored_urbs(&data->deferred);
 748         return 0;
 749 }
 750
 751 static int btusb_flush(struct hci_dev *hdev)
 752 {
 753         struct btusb_data *data = hdev->driver_data;
 754
 755         BT_DBG("%s", hdev->name);
 756
 757         usb_kill_anchored_urbs(&data->tx_anchor);
 758
 759         return 0;
 760 }
 761
 762 static int btusb_send_frame(struct sk_buff *skb)
 763 {
 764         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 765         struct btusb_data *data = hdev->driver_data;
 766         struct usb_ctrlrequest *dr;
 767         struct urb *urb;
 768         unsigned int pipe;
 769         int err;
 770
 771         BT_DBG("%s", hdev->name);
 772
 773         if (!test_bit(HCI_RUNNING, &hdev->flags))
 774                 return -EBUSY;
 775
 776         switch (bt_cb(skb)->pkt_type) {
 777         case HCI_COMMAND_PKT:
 778                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 779                 if (!urb)
 780                         return -ENOMEM;
 781
 782                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 783                 if (!dr) {
 784                         usb_free_urb(urb);
 785                         return -ENOMEM;
 786                 }
 787
 788                 dr->bRequestType = data->cmdreq_type;
 789                 dr->bRequest     = 0;
 790                 dr->wIndex       = 0;
 791                 dr->wValue       = 0;
 792                 dr->wLength      = __cpu_to_le16(skb->len);
 793
 794                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 795
 796                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 797                                 skb->data, skb->len, btusb_tx_complete, skb);
 798
 799                 hdev->stat.cmd_tx++;
 800                 break;
 801
 802         case HCI_ACLDATA_PKT:
 803                 if (!data->bulk_tx_ep)
 804                         return -ENODEV;
 805
 806                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 807                 if (!urb)
 808                         return -ENOMEM;
 809
 810                 pipe = usb_sndbulkpipe(data->udev,
 811                                         data->bulk_tx_ep->bEndpointAddress);
 812
 813                 usb_fill_bulk_urb(urb, data->udev, pipe,
 814                                 skb->data, skb->len, btusb_tx_complete, skb);
 815
 816                 hdev->stat.acl_tx++;
 817                 break;
 818
 819         case HCI_SCODATA_PKT:
 820                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 821                         return -ENODEV;
 822
 823                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 824                 if (!urb)
 825                         return -ENOMEM;
 826
 827                 pipe = usb_sndisocpipe(data->udev,
 828                                         data->isoc_tx_ep->bEndpointAddress);
 829
 830                 usb_fill_int_urb(urb, data->udev, pipe,
 831                                 skb->data, skb->len, btusb_isoc_tx_complete,
 832                                 skb, data->isoc_tx_ep->bInterval);
 833
 834                 urb->transfer_flags  = URB_ISO_ASAP;
 835
 836                 __fill_isoc_descriptor(urb, skb->len,
 837                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 838
 839                 hdev->stat.sco_tx++;
 840                 goto skip_waking;
 841
 842         default:
 843                 return -EILSEQ;
 844         }
 845
 846         err = inc_tx(data);
 847         if (err) {
 848                 usb_anchor_urb(urb, &data->deferred);
 849                 schedule_work(&data->waker);
 850                 err = 0;
 851                 goto done;
 852         }
 853
 854 skip_waking:
 855         usb_anchor_urb(urb, &data->tx_anchor);
 856
 857         err = usb_submit_urb(urb, GFP_ATOMIC);
 858         if (err < 0) {
 859                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 860                 kfree(urb->setup_packet);
 861                 usb_unanchor_urb(urb);
 862         } else {
 863                 usb_mark_last_busy(data->udev);
 864         }
 865
 866 done:
 867         usb_free_urb(urb);
 868         return err;
 869 }
 870
 871 static void btusb_destruct(struct hci_dev *hdev)
 872 {
 873         struct btusb_data *data = hdev->driver_data;
 874
 875         BT_DBG("%s", hdev->name);
 876
 877         kfree(data);
 878 }
 879
 880 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 881 {
 882         struct btusb_data *data = hdev->driver_data;
 883
 884         BT_DBG("%s evt %d", hdev->name, evt);
 885
 886         if (hdev->conn_hash.sco_num != data->sco_num) {
 887                 data->sco_num = hdev->conn_hash.sco_num;
 888                 schedule_work(&data->work);
 889         }
 890 }
 891
 892 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 893 {
 894         struct btusb_data *data = hdev->driver_data;
 895         struct usb_interface *intf = data->isoc;
 896         struct usb_endpoint_descriptor *ep_desc;
 897         int i, err;
 898
 899         if (!data->isoc)
 900                 return -ENODEV;
 901
 902         err = usb_set_interface(data->udev, 1, altsetting);
 903         if (err < 0) {
 904                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 905                 return err;
 906         }
 907
 908         data->isoc_altsetting = altsetting;
 909
 910         data->isoc_tx_ep = NULL;
 911         data->isoc_rx_ep = NULL;
 912
 913         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 914                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 915
 916                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 917                         data->isoc_tx_ep = ep_desc;
 918                         continue;
 919                 }
 920
 921                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 922                         data->isoc_rx_ep = ep_desc;
 923                         continue;
 924                 }
 925         }
 926
 927         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 928                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 929                 return -ENODEV;
 930         }
 931
 932         return 0;
 933 }
 934
 935 static void btusb_work(struct work_struct *work)
 936 {
 937         struct btusb_data *data = container_of(work, struct btusb_data, work);
 938         struct hci_dev *hdev = data->hdev;
 939         int err;
 940
 941         if (hdev->conn_hash.sco_num > 0) {
 942                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 943                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 944                         if (err < 0) {
 945                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 946                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 947                                 return;
 948                         }
 949
 950                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 951                 }
 952                 if (data->isoc_altsetting != 2) {
 953                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 954                         usb_kill_anchored_urbs(&data->isoc_anchor);
 955
 956                         if (__set_isoc_interface(hdev, 2) < 0)
 957                                 return;
 958                 }
 959
 960                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 961                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 962                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 963                         else
 964                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 965                 }
 966         } else {
 967                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 968                 usb_kill_anchored_urbs(&data->isoc_anchor);
 969
 970                 __set_isoc_interface(hdev, 0);
 971                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 972                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 973         }
 974 }
 975
 976 static void btusb_waker(struct work_struct *work)
 977 {
 978         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 979         int err;
 980
 981         err = usb_autopm_get_interface(data->intf);
 982         if (err < 0)
 983                 return;
 984
 985         usb_autopm_put_interface(data->intf);
 986 }
 987
 988 static int btusb_probe(struct usb_interface *intf,
 989                                 const struct usb_device_id *id)
 990 {
 991         struct usb_endpoint_descriptor *ep_desc;
 992         struct btusb_data *data;
 993         struct hci_dev *hdev;
 994         int i, err;
 995
 996         BT_DBG("intf %p id %p", intf, id);
 997
 998         /* interface numbers are hardcoded in the spec */
 999         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1000                 return -ENODEV;
1001
1002         if (!id->driver_info) {
1003                 const struct usb_device_id *match;
1004                 match = usb_match_id(intf, blacklist_table);
1005                 if (match)
1006                         id = match;
1007         }
1008
1009         if (id->driver_info == BTUSB_IGNORE)
1010                 return -ENODEV;
1011
1012         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1013                 return -ENODEV;
1014
1015         if (ignore_csr && id->driver_info & BTUSB_CSR)
1016                 return -ENODEV;
1017
1018         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1019                 return -ENODEV;
1020
1021         if (id->driver_info & BTUSB_ATH3012) {
1022                 struct usb_device *udev = interface_to_usbdev(intf);
1023
1024                 /* Old firmware would otherwise let ath3k driver load
1025                  * patch and sysconfig files */
1026                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1027                         return -ENODEV;
1028         }
1029
1030         data = kzalloc(sizeof(*data), GFP_KERNEL);
1031         if (!data)
1032                 return -ENOMEM;
1033
1034         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1035                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1036
1037                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1038                         data->intr_ep = ep_desc;
1039                         continue;
1040                 }
1041
1042                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1043                         data->bulk_tx_ep = ep_desc;
1044                         continue;
1045                 }
1046
1047                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1048                         data->bulk_rx_ep = ep_desc;
1049                         continue;
1050                 }
1051         }
1052
1053         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1054                 kfree(data);
1055                 return -ENODEV;
1056         }
1057
1058         data->cmdreq_type = USB_TYPE_CLASS;
1059
1060         data->udev = interface_to_usbdev(intf);
1061         data->intf = intf;
1062
1063         spin_lock_init(&data->lock);
1064
1065         INIT_WORK(&data->work, btusb_work);
1066         INIT_WORK(&data->waker, btusb_waker);
1067         spin_lock_init(&data->txlock);
1068
1069         init_usb_anchor(&data->tx_anchor);
1070         init_usb_anchor(&data->intr_anchor);
1071         init_usb_anchor(&data->bulk_anchor);
1072         init_usb_anchor(&data->isoc_anchor);
1073         init_usb_anchor(&data->deferred);
1074
1075         hdev = hci_alloc_dev();
1076         if (!hdev) {
1077                 kfree(data);
1078                 return -ENOMEM;
1079         }
1080
1081         hdev->bus = HCI_USB;
1082         hdev->driver_data = data;
1083
1084         data->hdev = hdev;
1085
1086         SET_HCIDEV_DEV(hdev, &intf->dev);
1087
1088         hdev->open     = btusb_open;
1089         hdev->close    = btusb_close;
1090         hdev->flush    = btusb_flush;
1091         hdev->send     = btusb_send_frame;
1092         hdev->destruct = btusb_destruct;
1093         hdev->notify   = btusb_notify;
1094
1095         hdev->owner = THIS_MODULE;
1096
1097         if (id->driver_info & BTUSB_INTEL_BOOT)
1098                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1099
1100         /* Interface numbers are hardcoded in the specification */
1101         data->isoc = usb_ifnum_to_if(data->udev, 1);
1102
1103         if (!reset)
1104                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1105
1106         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1107                 if (!disable_scofix)
1108                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1109         }
1110
1111         if (id->driver_info & BTUSB_BROKEN_ISOC)
1112                 data->isoc = NULL;
1113
1114         if (id->driver_info & BTUSB_DIGIANSWER) {
1115                 data->cmdreq_type = USB_TYPE_VENDOR;
1116                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1117         }
1118
1119         if (id->driver_info & BTUSB_CSR) {
1120                 struct usb_device *udev = data->udev;
1121
1122                 /* Old firmware would otherwise execute USB reset */
1123                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1124                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1125         }
1126
1127         if (id->driver_info & BTUSB_SNIFFER) {
1128                 struct usb_device *udev = data->udev;
1129
1130                 /* New sniffer firmware has crippled HCI interface */
1131                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1132                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1133
1134                 data->isoc = NULL;
1135         }
1136
1137         if (id->driver_info & BTUSB_BCM92035) {
1138                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1139                 struct sk_buff *skb;
1140
1141                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1142                 if (skb) {
1143                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1144                         skb_queue_tail(&hdev->driver_init, skb);
1145                 }
1146         }
1147
1148         if (data->isoc) {
1149                 err = usb_driver_claim_interface(&btusb_driver,
1150                                                         data->isoc, data);
1151                 if (err < 0) {
1152                         hci_free_dev(hdev);
1153                         kfree(data);
1154                         return err;
1155                 }
1156         }
1157
1158         err = hci_register_dev(hdev);
1159         if (err < 0) {
1160                 hci_free_dev(hdev);
1161                 kfree(data);
1162                 return err;
1163         }
1164
1165         usb_set_intfdata(intf, data);
1166
1167         return 0;
1168 }
1169
1170 static void btusb_disconnect(struct usb_interface *intf)
1171 {
1172         struct btusb_data *data = usb_get_intfdata(intf);
1173         struct hci_dev *hdev;
1174
1175         BT_DBG("intf %p", intf);
1176
1177         if (!data)
1178                 return;
1179
1180         hdev = data->hdev;
1181
1182         __hci_dev_hold(hdev);
1183
1184         usb_set_intfdata(data->intf, NULL);
1185
1186         if (data->isoc)
1187                 usb_set_intfdata(data->isoc, NULL);
1188
1189         hci_unregister_dev(hdev);
1190
1191         if (intf == data->isoc)
1192                 usb_driver_release_interface(&btusb_driver, data->intf);
1193         else if (data->isoc)
1194                 usb_driver_release_interface(&btusb_driver, data->isoc);
1195
1196         __hci_dev_put(hdev);
1197
1198         hci_free_dev(hdev);
1199 }
1200
1201 #ifdef CONFIG_PM
1202 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1203 {
1204         struct btusb_data *data = usb_get_intfdata(intf);
1205
1206         BT_DBG("intf %p", intf);
1207
1208         if (data->suspend_count++)
1209                 return 0;
1210
1211         spin_lock_irq(&data->txlock);
1212         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1213                 set_bit(BTUSB_SUSPENDING, &data->flags);
1214                 spin_unlock_irq(&data->txlock);
1215         } else {
1216                 spin_unlock_irq(&data->txlock);
1217                 data->suspend_count--;
1218                 return -EBUSY;
1219         }
1220
1221         cancel_work_sync(&data->work);
1222
1223         btusb_stop_traffic(data);
1224         usb_kill_anchored_urbs(&data->tx_anchor);
1225
1226         return 0;
1227 }
1228
1229 static void play_deferred(struct btusb_data *data)
1230 {
1231         struct urb *urb;
1232         int err;
1233
1234         while ((urb = usb_get_from_anchor(&data->deferred))) {
1235                 err = usb_submit_urb(urb, GFP_ATOMIC);
1236                 if (err < 0)
1237                         break;
1238
1239                 data->tx_in_flight++;
1240         }
1241         usb_scuttle_anchored_urbs(&data->deferred);
1242 }
1243
1244 static int btusb_resume(struct usb_interface *intf)
1245 {
1246         struct btusb_data *data = usb_get_intfdata(intf);
1247         struct hci_dev *hdev = data->hdev;
1248         int err = 0;
1249
1250         BT_DBG("intf %p", intf);
1251
1252         if (--data->suspend_count)
1253                 return 0;
1254
1255         if (!test_bit(HCI_RUNNING, &hdev->flags))
1256                 goto done;
1257
1258         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1259                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1260                 if (err < 0) {
1261                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1262                         goto failed;
1263                 }
1264         }
1265
1266         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1267                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1268                 if (err < 0) {
1269                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1270                         goto failed;
1271                 }
1272
1273                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1274         }
1275
1276         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1277                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1278                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1279                 else
1280                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1281         }
1282
1283         spin_lock_irq(&data->txlock);
1284         play_deferred(data);
1285         clear_bit(BTUSB_SUSPENDING, &data->flags);
1286         spin_unlock_irq(&data->txlock);
1287         schedule_work(&data->work);
1288
1289         return 0;
1290
1291 failed:
1292         usb_scuttle_anchored_urbs(&data->deferred);
1293 done:
1294         spin_lock_irq(&data->txlock);
1295         clear_bit(BTUSB_SUSPENDING, &data->flags);
1296         spin_unlock_irq(&data->txlock);
1297
1298         return err;
1299 }
1300 #endif
1301
1302 static struct usb_driver btusb_driver = {
1303         .name           = "btusb",
1304         .probe          = btusb_probe,
1305         .disconnect     = btusb_disconnect,
1306 #ifdef CONFIG_PM
1307         .suspend        = btusb_suspend,
1308         .resume         = btusb_resume,
1309 #endif
1310         .id_table       = btusb_table,
1311         .supports_autosuspend = 1,
1312 };
1313
1314 static int __init btusb_init(void)
1315 {
1316         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1317
1318         return usb_register(&btusb_driver);
1319 }
1320
1321 static void __exit btusb_exit(void)
1322 {
1323         usb_deregister(&btusb_driver);
1324 }
1325
1326 module_init(btusb_init);
1327 module_exit(btusb_exit);
1328
1329 module_param(ignore_dga, bool, 0644);
1330 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1331
1332 module_param(ignore_csr, bool, 0644);
1333 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1334
1335 module_param(ignore_sniffer, bool, 0644);
1336 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1337
1338 module_param(disable_scofix, bool, 0644);
1339 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1340
1341 module_param(force_scofix, bool, 0644);
1342 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1343
1344 module_param(reset, bool, 0644);
1345 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1346
1347 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1348 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1349 MODULE_VERSION(VERSION);
1350 MODULE_LICENSE("GPL");