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