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