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