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