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/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27
  28 #include <net/bluetooth/bluetooth.h>
  29 #include <net/bluetooth/hci_core.h>
  30
  31 #define VERSION "0.6"
  32
  33 static bool ignore_dga;
  34 static bool ignore_csr;
  35 static bool ignore_sniffer;
  36 static bool disable_scofix;
  37 static bool force_scofix;
  38
  39 static bool reset = 1;
  40
  41 static struct usb_driver btusb_driver;
  42
  43 #define BTUSB_IGNORE            0x01
  44 #define BTUSB_DIGIANSWER        0x02
  45 #define BTUSB_CSR               0x04
  46 #define BTUSB_SNIFFER           0x08
  47 #define BTUSB_BCM92035          0x10
  48 #define BTUSB_BROKEN_ISOC       0x20
  49 #define BTUSB_WRONG_SCO_MTU     0x40
  50 #define BTUSB_ATH3012           0x80
  51 #define BTUSB_INTEL             0x100
  52 #define BTUSB_BCM_PATCHRAM      0x200
  53
  54 static const struct usb_device_id btusb_table[] = {
  55         /* Generic Bluetooth USB device */
  56         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  57
  58         /* Apple-specific (Broadcom) devices */
  59         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  60
  61         /* MediaTek MT76x0E */
  62         { USB_DEVICE(0x0e8d, 0x763f) },
  63
  64         /* Broadcom SoftSailing reporting vendor specific */
  65         { USB_DEVICE(0x0a5c, 0x21e1) },
  66
  67         /* Apple MacBookPro 7,1 */
  68         { USB_DEVICE(0x05ac, 0x8213) },
  69
  70         /* Apple iMac11,1 */
  71         { USB_DEVICE(0x05ac, 0x8215) },
  72
  73         /* Apple MacBookPro6,2 */
  74         { USB_DEVICE(0x05ac, 0x8218) },
  75
  76         /* Apple MacBookAir3,1, MacBookAir3,2 */
  77         { USB_DEVICE(0x05ac, 0x821b) },
  78
  79         /* Apple MacBookAir4,1 */
  80         { USB_DEVICE(0x05ac, 0x821f) },
  81
  82         /* Apple MacBookPro8,2 */
  83         { USB_DEVICE(0x05ac, 0x821a) },
  84
  85         /* Apple MacMini5,1 */
  86         { USB_DEVICE(0x05ac, 0x8281) },
  87
  88         /* AVM BlueFRITZ! USB v2.0 */
  89         { USB_DEVICE(0x057c, 0x3800) },
  90
  91         /* Bluetooth Ultraport Module from IBM */
  92         { USB_DEVICE(0x04bf, 0x030a) },
  93
  94         /* ALPS Modules with non-standard id */
  95         { USB_DEVICE(0x044e, 0x3001) },
  96         { USB_DEVICE(0x044e, 0x3002) },
  97
  98         /* Ericsson with non-standard id */
  99         { USB_DEVICE(0x0bdb, 0x1002) },
 100
 101         /* Canyon CN-BTU1 with HID interfaces */
 102         { USB_DEVICE(0x0c10, 0x0000) },
 103
 104         /* Broadcom BCM20702A0 */
 105         { USB_DEVICE(0x0489, 0xe042) },
 106         { USB_DEVICE(0x04ca, 0x2003) },
 107         { USB_DEVICE(0x0b05, 0x17b5) },
 108         { USB_DEVICE(0x0b05, 0x17cb) },
 109         { USB_DEVICE(0x413c, 0x8197) },
 110
 111         /* Foxconn - Hon Hai */
 112         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 113
 114         /* Broadcom devices with vendor specific id */
 115         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 116           .driver_info = BTUSB_BCM_PATCHRAM },
 117
 118         /* Belkin F8065bf - Broadcom based */
 119         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 120
 121         /* IMC Networks - Broadcom based */
 122         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 123
 124         { }     /* Terminating entry */
 125 };
 126
 127 MODULE_DEVICE_TABLE(usb, btusb_table);
 128
 129 static const struct usb_device_id blacklist_table[] = {
 130         /* CSR BlueCore devices */
 131         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 132
 133         /* Broadcom BCM2033 without firmware */
 134         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 135
 136         /* Atheros 3011 with sflash firmware */
 137         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 138         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 139         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 140         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 141         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 142         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 143
 144         /* Atheros AR9285 Malbec with sflash firmware */
 145         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 146
 147         /* Atheros 3012 with sflash firmware */
 148         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0cf3, 0x3005), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 179
 180         /* Atheros AR5BBU12 with sflash firmware */
 181         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 182
 183         /* Atheros AR5BBU12 with sflash firmware */
 184         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 186
 187         /* Broadcom BCM2035 */
 188         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 189         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 190         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 191
 192         /* Broadcom BCM2045 */
 193         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 194         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 195
 196         /* IBM/Lenovo ThinkPad with Broadcom chip */
 197         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 198         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 199
 200         /* HP laptop with Broadcom chip */
 201         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 202
 203         /* Dell laptop with Broadcom chip */
 204         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 205
 206         /* Dell Wireless 370 and 410 devices */
 207         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 208         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 209
 210         /* Belkin F8T012 and F8T013 devices */
 211         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 212         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 213
 214         /* Asus WL-BTD202 device */
 215         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 216
 217         /* Kensington Bluetooth USB adapter */
 218         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 219
 220         /* RTX Telecom based adapters with buggy SCO support */
 221         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 222         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 223
 224         /* CONWISE Technology based adapters with buggy SCO support */
 225         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 226
 227         /* Digianswer devices */
 228         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 229         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 230
 231         /* CSR BlueCore Bluetooth Sniffer */
 232         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 233
 234         /* Frontline ComProbe Bluetooth Sniffer */
 235         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 236
 237         /* Intel Bluetooth device */
 238         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 239         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 240
 241         { }     /* Terminating entry */
 242 };
 243
 244 #define BTUSB_MAX_ISOC_FRAMES   10
 245
 246 #define BTUSB_INTR_RUNNING      0
 247 #define BTUSB_BULK_RUNNING      1
 248 #define BTUSB_ISOC_RUNNING      2
 249 #define BTUSB_SUSPENDING        3
 250 #define BTUSB_DID_ISO_RESUME    4
 251
 252 struct btusb_data {
 253         struct hci_dev       *hdev;
 254         struct usb_device    *udev;
 255         struct usb_interface *intf;
 256         struct usb_interface *isoc;
 257
 258         spinlock_t lock;
 259
 260         unsigned long flags;
 261
 262         struct work_struct work;
 263         struct work_struct waker;
 264
 265         struct usb_anchor tx_anchor;
 266         struct usb_anchor intr_anchor;
 267         struct usb_anchor bulk_anchor;
 268         struct usb_anchor isoc_anchor;
 269         struct usb_anchor deferred;
 270         int tx_in_flight;
 271         spinlock_t txlock;
 272
 273         struct usb_endpoint_descriptor *intr_ep;
 274         struct usb_endpoint_descriptor *bulk_tx_ep;
 275         struct usb_endpoint_descriptor *bulk_rx_ep;
 276         struct usb_endpoint_descriptor *isoc_tx_ep;
 277         struct usb_endpoint_descriptor *isoc_rx_ep;
 278
 279         __u8 cmdreq_type;
 280
 281         unsigned int sco_num;
 282         int isoc_altsetting;
 283         int suspend_count;
 284 };
 285
 286 static int inc_tx(struct btusb_data *data)
 287 {
 288         unsigned long flags;
 289         int rv;
 290
 291         spin_lock_irqsave(&data->txlock, flags);
 292         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 293         if (!rv)
 294                 data->tx_in_flight++;
 295         spin_unlock_irqrestore(&data->txlock, flags);
 296
 297         return rv;
 298 }
 299
 300 static void btusb_intr_complete(struct urb *urb)
 301 {
 302         struct hci_dev *hdev = urb->context;
 303         struct btusb_data *data = hci_get_drvdata(hdev);
 304         int err;
 305
 306         BT_DBG("%s urb %p status %d count %d", hdev->name,
 307                                         urb, urb->status, urb->actual_length);
 308
 309         if (!test_bit(HCI_RUNNING, &hdev->flags))
 310                 return;
 311
 312         if (urb->status == 0) {
 313                 hdev->stat.byte_rx += urb->actual_length;
 314
 315                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 316                                                 urb->transfer_buffer,
 317                                                 urb->actual_length) < 0) {
 318                         BT_ERR("%s corrupted event packet", hdev->name);
 319                         hdev->stat.err_rx++;
 320                 }
 321         }
 322
 323         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 324                 return;
 325
 326         usb_mark_last_busy(data->udev);
 327         usb_anchor_urb(urb, &data->intr_anchor);
 328
 329         err = usb_submit_urb(urb, GFP_ATOMIC);
 330         if (err < 0) {
 331                 /* -EPERM: urb is being killed;
 332                  * -ENODEV: device got disconnected */
 333                 if (err != -EPERM && err != -ENODEV)
 334                         BT_ERR("%s urb %p failed to resubmit (%d)",
 335                                                 hdev->name, urb, -err);
 336                 usb_unanchor_urb(urb);
 337         }
 338 }
 339
 340 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 341 {
 342         struct btusb_data *data = hci_get_drvdata(hdev);
 343         struct urb *urb;
 344         unsigned char *buf;
 345         unsigned int pipe;
 346         int err, size;
 347
 348         BT_DBG("%s", hdev->name);
 349
 350         if (!data->intr_ep)
 351                 return -ENODEV;
 352
 353         urb = usb_alloc_urb(0, mem_flags);
 354         if (!urb)
 355                 return -ENOMEM;
 356
 357         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 358
 359         buf = kmalloc(size, mem_flags);
 360         if (!buf) {
 361                 usb_free_urb(urb);
 362                 return -ENOMEM;
 363         }
 364
 365         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 366
 367         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 368                                                 btusb_intr_complete, hdev,
 369                                                 data->intr_ep->bInterval);
 370
 371         urb->transfer_flags |= URB_FREE_BUFFER;
 372
 373         usb_anchor_urb(urb, &data->intr_anchor);
 374
 375         err = usb_submit_urb(urb, mem_flags);
 376         if (err < 0) {
 377                 if (err != -EPERM && err != -ENODEV)
 378                         BT_ERR("%s urb %p submission failed (%d)",
 379                                                 hdev->name, urb, -err);
 380                 usb_unanchor_urb(urb);
 381         }
 382
 383         usb_free_urb(urb);
 384
 385         return err;
 386 }
 387
 388 static void btusb_bulk_complete(struct urb *urb)
 389 {
 390         struct hci_dev *hdev = urb->context;
 391         struct btusb_data *data = hci_get_drvdata(hdev);
 392         int err;
 393
 394         BT_DBG("%s urb %p status %d count %d", hdev->name,
 395                                         urb, urb->status, urb->actual_length);
 396
 397         if (!test_bit(HCI_RUNNING, &hdev->flags))
 398                 return;
 399
 400         if (urb->status == 0) {
 401                 hdev->stat.byte_rx += urb->actual_length;
 402
 403                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 404                                                 urb->transfer_buffer,
 405                                                 urb->actual_length) < 0) {
 406                         BT_ERR("%s corrupted ACL packet", hdev->name);
 407                         hdev->stat.err_rx++;
 408                 }
 409         }
 410
 411         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 412                 return;
 413
 414         usb_anchor_urb(urb, &data->bulk_anchor);
 415         usb_mark_last_busy(data->udev);
 416
 417         err = usb_submit_urb(urb, GFP_ATOMIC);
 418         if (err < 0) {
 419                 /* -EPERM: urb is being killed;
 420                  * -ENODEV: device got disconnected */
 421                 if (err != -EPERM && err != -ENODEV)
 422                         BT_ERR("%s urb %p failed to resubmit (%d)",
 423                                                 hdev->name, urb, -err);
 424                 usb_unanchor_urb(urb);
 425         }
 426 }
 427
 428 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 429 {
 430         struct btusb_data *data = hci_get_drvdata(hdev);
 431         struct urb *urb;
 432         unsigned char *buf;
 433         unsigned int pipe;
 434         int err, size = HCI_MAX_FRAME_SIZE;
 435
 436         BT_DBG("%s", hdev->name);
 437
 438         if (!data->bulk_rx_ep)
 439                 return -ENODEV;
 440
 441         urb = usb_alloc_urb(0, mem_flags);
 442         if (!urb)
 443                 return -ENOMEM;
 444
 445         buf = kmalloc(size, mem_flags);
 446         if (!buf) {
 447                 usb_free_urb(urb);
 448                 return -ENOMEM;
 449         }
 450
 451         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 452
 453         usb_fill_bulk_urb(urb, data->udev, pipe,
 454                                         buf, size, btusb_bulk_complete, hdev);
 455
 456         urb->transfer_flags |= URB_FREE_BUFFER;
 457
 458         usb_mark_last_busy(data->udev);
 459         usb_anchor_urb(urb, &data->bulk_anchor);
 460
 461         err = usb_submit_urb(urb, mem_flags);
 462         if (err < 0) {
 463                 if (err != -EPERM && err != -ENODEV)
 464                         BT_ERR("%s urb %p submission failed (%d)",
 465                                                 hdev->name, urb, -err);
 466                 usb_unanchor_urb(urb);
 467         }
 468
 469         usb_free_urb(urb);
 470
 471         return err;
 472 }
 473
 474 static void btusb_isoc_complete(struct urb *urb)
 475 {
 476         struct hci_dev *hdev = urb->context;
 477         struct btusb_data *data = hci_get_drvdata(hdev);
 478         int i, err;
 479
 480         BT_DBG("%s urb %p status %d count %d", hdev->name,
 481                                         urb, urb->status, urb->actual_length);
 482
 483         if (!test_bit(HCI_RUNNING, &hdev->flags))
 484                 return;
 485
 486         if (urb->status == 0) {
 487                 for (i = 0; i < urb->number_of_packets; i++) {
 488                         unsigned int offset = urb->iso_frame_desc[i].offset;
 489                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 490
 491                         if (urb->iso_frame_desc[i].status)
 492                                 continue;
 493
 494                         hdev->stat.byte_rx += length;
 495
 496                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 497                                                 urb->transfer_buffer + offset,
 498                                                                 length) < 0) {
 499                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 500                                 hdev->stat.err_rx++;
 501                         }
 502                 }
 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 = hci_get_drvdata(hdev);
 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                 if (err != -EPERM && err != -ENODEV)
 583                         BT_ERR("%s urb %p submission failed (%d)",
 584                                                 hdev->name, urb, -err);
 585                 usb_unanchor_urb(urb);
 586         }
 587
 588         usb_free_urb(urb);
 589
 590         return err;
 591 }
 592
 593 static void btusb_tx_complete(struct urb *urb)
 594 {
 595         struct sk_buff *skb = urb->context;
 596         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 597         struct btusb_data *data = hci_get_drvdata(hdev);
 598
 599         BT_DBG("%s urb %p status %d count %d", hdev->name,
 600                                         urb, urb->status, urb->actual_length);
 601
 602         if (!test_bit(HCI_RUNNING, &hdev->flags))
 603                 goto done;
 604
 605         if (!urb->status)
 606                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 607         else
 608                 hdev->stat.err_tx++;
 609
 610 done:
 611         spin_lock(&data->txlock);
 612         data->tx_in_flight--;
 613         spin_unlock(&data->txlock);
 614
 615         kfree(urb->setup_packet);
 616
 617         kfree_skb(skb);
 618 }
 619
 620 static void btusb_isoc_tx_complete(struct urb *urb)
 621 {
 622         struct sk_buff *skb = urb->context;
 623         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 624
 625         BT_DBG("%s urb %p status %d count %d", hdev->name,
 626                                         urb, urb->status, urb->actual_length);
 627
 628         if (!test_bit(HCI_RUNNING, &hdev->flags))
 629                 goto done;
 630
 631         if (!urb->status)
 632                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 633         else
 634                 hdev->stat.err_tx++;
 635
 636 done:
 637         kfree(urb->setup_packet);
 638
 639         kfree_skb(skb);
 640 }
 641
 642 static int btusb_open(struct hci_dev *hdev)
 643 {
 644         struct btusb_data *data = hci_get_drvdata(hdev);
 645         int err;
 646
 647         BT_DBG("%s", hdev->name);
 648
 649         err = usb_autopm_get_interface(data->intf);
 650         if (err < 0)
 651                 return err;
 652
 653         data->intf->needs_remote_wakeup = 1;
 654
 655         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 656                 goto done;
 657
 658         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 659                 goto done;
 660
 661         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 662         if (err < 0)
 663                 goto failed;
 664
 665         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 666         if (err < 0) {
 667                 usb_kill_anchored_urbs(&data->intr_anchor);
 668                 goto failed;
 669         }
 670
 671         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 672         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 673
 674 done:
 675         usb_autopm_put_interface(data->intf);
 676         return 0;
 677
 678 failed:
 679         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 680         clear_bit(HCI_RUNNING, &hdev->flags);
 681         usb_autopm_put_interface(data->intf);
 682         return err;
 683 }
 684
 685 static void btusb_stop_traffic(struct btusb_data *data)
 686 {
 687         usb_kill_anchored_urbs(&data->intr_anchor);
 688         usb_kill_anchored_urbs(&data->bulk_anchor);
 689         usb_kill_anchored_urbs(&data->isoc_anchor);
 690 }
 691
 692 static int btusb_close(struct hci_dev *hdev)
 693 {
 694         struct btusb_data *data = hci_get_drvdata(hdev);
 695         int err;
 696
 697         BT_DBG("%s", hdev->name);
 698
 699         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 700                 return 0;
 701
 702         cancel_work_sync(&data->work);
 703         cancel_work_sync(&data->waker);
 704
 705         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 706         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 707         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 708
 709         btusb_stop_traffic(data);
 710         err = usb_autopm_get_interface(data->intf);
 711         if (err < 0)
 712                 goto failed;
 713
 714         data->intf->needs_remote_wakeup = 0;
 715         usb_autopm_put_interface(data->intf);
 716
 717 failed:
 718         usb_scuttle_anchored_urbs(&data->deferred);
 719         return 0;
 720 }
 721
 722 static int btusb_flush(struct hci_dev *hdev)
 723 {
 724         struct btusb_data *data = hci_get_drvdata(hdev);
 725
 726         BT_DBG("%s", hdev->name);
 727
 728         usb_kill_anchored_urbs(&data->tx_anchor);
 729
 730         return 0;
 731 }
 732
 733 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 734 {
 735         struct btusb_data *data = hci_get_drvdata(hdev);
 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         skb->dev = (void *) hdev;
 747
 748         switch (bt_cb(skb)->pkt_type) {
 749         case HCI_COMMAND_PKT:
 750                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 751                 if (!urb)
 752                         return -ENOMEM;
 753
 754                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 755                 if (!dr) {
 756                         usb_free_urb(urb);
 757                         return -ENOMEM;
 758                 }
 759
 760                 dr->bRequestType = data->cmdreq_type;
 761                 dr->bRequest     = 0;
 762                 dr->wIndex       = 0;
 763                 dr->wValue       = 0;
 764                 dr->wLength      = __cpu_to_le16(skb->len);
 765
 766                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 767
 768                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 769                                 skb->data, skb->len, btusb_tx_complete, skb);
 770
 771                 hdev->stat.cmd_tx++;
 772                 break;
 773
 774         case HCI_ACLDATA_PKT:
 775                 if (!data->bulk_tx_ep)
 776                         return -ENODEV;
 777
 778                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 779                 if (!urb)
 780                         return -ENOMEM;
 781
 782                 pipe = usb_sndbulkpipe(data->udev,
 783                                         data->bulk_tx_ep->bEndpointAddress);
 784
 785                 usb_fill_bulk_urb(urb, data->udev, pipe,
 786                                 skb->data, skb->len, btusb_tx_complete, skb);
 787
 788                 hdev->stat.acl_tx++;
 789                 break;
 790
 791         case HCI_SCODATA_PKT:
 792                 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
 793                         return -ENODEV;
 794
 795                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 796                 if (!urb)
 797                         return -ENOMEM;
 798
 799                 pipe = usb_sndisocpipe(data->udev,
 800                                         data->isoc_tx_ep->bEndpointAddress);
 801
 802                 usb_fill_int_urb(urb, data->udev, pipe,
 803                                 skb->data, skb->len, btusb_isoc_tx_complete,
 804                                 skb, data->isoc_tx_ep->bInterval);
 805
 806                 urb->transfer_flags  = URB_ISO_ASAP;
 807
 808                 __fill_isoc_descriptor(urb, skb->len,
 809                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 810
 811                 hdev->stat.sco_tx++;
 812                 goto skip_waking;
 813
 814         default:
 815                 return -EILSEQ;
 816         }
 817
 818         err = inc_tx(data);
 819         if (err) {
 820                 usb_anchor_urb(urb, &data->deferred);
 821                 schedule_work(&data->waker);
 822                 err = 0;
 823                 goto done;
 824         }
 825
 826 skip_waking:
 827         usb_anchor_urb(urb, &data->tx_anchor);
 828
 829         err = usb_submit_urb(urb, GFP_ATOMIC);
 830         if (err < 0) {
 831                 if (err != -EPERM && err != -ENODEV)
 832                         BT_ERR("%s urb %p submission failed (%d)",
 833                                                 hdev->name, urb, -err);
 834                 kfree(urb->setup_packet);
 835                 usb_unanchor_urb(urb);
 836         } else {
 837                 usb_mark_last_busy(data->udev);
 838         }
 839
 840 done:
 841         usb_free_urb(urb);
 842         return err;
 843 }
 844
 845 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 846 {
 847         struct btusb_data *data = hci_get_drvdata(hdev);
 848
 849         BT_DBG("%s evt %d", hdev->name, evt);
 850
 851         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
 852                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
 853                 schedule_work(&data->work);
 854         }
 855 }
 856
 857 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 858 {
 859         struct btusb_data *data = hci_get_drvdata(hdev);
 860         struct usb_interface *intf = data->isoc;
 861         struct usb_endpoint_descriptor *ep_desc;
 862         int i, err;
 863
 864         if (!data->isoc)
 865                 return -ENODEV;
 866
 867         err = usb_set_interface(data->udev, 1, altsetting);
 868         if (err < 0) {
 869                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 870                 return err;
 871         }
 872
 873         data->isoc_altsetting = altsetting;
 874
 875         data->isoc_tx_ep = NULL;
 876         data->isoc_rx_ep = NULL;
 877
 878         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 879                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 880
 881                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 882                         data->isoc_tx_ep = ep_desc;
 883                         continue;
 884                 }
 885
 886                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 887                         data->isoc_rx_ep = ep_desc;
 888                         continue;
 889                 }
 890         }
 891
 892         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 893                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 894                 return -ENODEV;
 895         }
 896
 897         return 0;
 898 }
 899
 900 static void btusb_work(struct work_struct *work)
 901 {
 902         struct btusb_data *data = container_of(work, struct btusb_data, work);
 903         struct hci_dev *hdev = data->hdev;
 904         int new_alts;
 905         int err;
 906
 907         if (data->sco_num > 0) {
 908                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 909                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 910                         if (err < 0) {
 911                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 912                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 913                                 return;
 914                         }
 915
 916                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 917                 }
 918
 919                 if (hdev->voice_setting & 0x0020) {
 920                         static const int alts[3] = { 2, 4, 5 };
 921                         new_alts = alts[data->sco_num - 1];
 922                 } else {
 923                         new_alts = data->sco_num;
 924                 }
 925
 926                 if (data->isoc_altsetting != new_alts) {
 927                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 928                         usb_kill_anchored_urbs(&data->isoc_anchor);
 929
 930                         if (__set_isoc_interface(hdev, new_alts) < 0)
 931                                 return;
 932                 }
 933
 934                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 935                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 936                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 937                         else
 938                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 939                 }
 940         } else {
 941                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 942                 usb_kill_anchored_urbs(&data->isoc_anchor);
 943
 944                 __set_isoc_interface(hdev, 0);
 945                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 946                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 947         }
 948 }
 949
 950 static void btusb_waker(struct work_struct *work)
 951 {
 952         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 953         int err;
 954
 955         err = usb_autopm_get_interface(data->intf);
 956         if (err < 0)
 957                 return;
 958
 959         usb_autopm_put_interface(data->intf);
 960 }
 961
 962 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 963 {
 964         struct sk_buff *skb;
 965         u8 val = 0x00;
 966
 967         BT_DBG("%s", hdev->name);
 968
 969         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 970         if (IS_ERR(skb))
 971                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 972         else
 973                 kfree_skb(skb);
 974
 975         return 0;
 976 }
 977
 978 static int btusb_setup_csr(struct hci_dev *hdev)
 979 {
 980         struct hci_rp_read_local_version *rp;
 981         struct sk_buff *skb;
 982         int ret;
 983
 984         BT_DBG("%s", hdev->name);
 985
 986         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
 987                              HCI_INIT_TIMEOUT);
 988         if (IS_ERR(skb)) {
 989                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
 990                 return -PTR_ERR(skb);
 991         }
 992
 993         rp = (struct hci_rp_read_local_version *) skb->data;
 994
 995         if (!rp->status) {
 996                 if (le16_to_cpu(rp->manufacturer) != 10) {
 997                         /* Clear the reset quirk since this is not an actual
 998                          * early Bluetooth 1.1 device from CSR.
 999                          */
1000                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1001
1002                         /* These fake CSR controllers have all a broken
1003                          * stored link key handling and so just disable it.
1004                          */
1005                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1006                                 &hdev->quirks);
1007                 }
1008         }
1009
1010         ret = -bt_to_errno(rp->status);
1011
1012         kfree_skb(skb);
1013
1014         return ret;
1015 }
1016
1017 struct intel_version {
1018         u8 status;
1019         u8 hw_platform;
1020         u8 hw_variant;
1021         u8 hw_revision;
1022         u8 fw_variant;
1023         u8 fw_revision;
1024         u8 fw_build_num;
1025         u8 fw_build_ww;
1026         u8 fw_build_yy;
1027         u8 fw_patch_num;
1028 } __packed;
1029
1030 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1031                                                 struct intel_version *ver)
1032 {
1033         const struct firmware *fw;
1034         char fwname[64];
1035         int ret;
1036
1037         snprintf(fwname, sizeof(fwname),
1038                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1039                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1040                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1041                  ver->fw_build_ww, ver->fw_build_yy);
1042
1043         ret = request_firmware(&fw, fwname, &hdev->dev);
1044         if (ret < 0) {
1045                 if (ret == -EINVAL) {
1046                         BT_ERR("%s Intel firmware file request failed (%d)",
1047                                hdev->name, ret);
1048                         return NULL;
1049                 }
1050
1051                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1052                        hdev->name, fwname, ret);
1053
1054                 /* If the correct firmware patch file is not found, use the
1055                  * default firmware patch file instead
1056                  */
1057                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1058                          ver->hw_platform, ver->hw_variant);
1059                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1060                         BT_ERR("%s failed to open default Intel fw file: %s",
1061                                hdev->name, fwname);
1062                         return NULL;
1063                 }
1064         }
1065
1066         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1067
1068         return fw;
1069 }
1070
1071 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1072                                       const struct firmware *fw,
1073                                       const u8 **fw_ptr, int *disable_patch)
1074 {
1075         struct sk_buff *skb;
1076         struct hci_command_hdr *cmd;
1077         const u8 *cmd_param;
1078         struct hci_event_hdr *evt = NULL;
1079         const u8 *evt_param = NULL;
1080         int remain = fw->size - (*fw_ptr - fw->data);
1081
1082         /* The first byte indicates the types of the patch command or event.
1083          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1084          * in the current firmware buffer doesn't start with 0x01 or
1085          * the size of remain buffer is smaller than HCI command header,
1086          * the firmware file is corrupted and it should stop the patching
1087          * process.
1088          */
1089         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1090                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1091                 return -EINVAL;
1092         }
1093         (*fw_ptr)++;
1094         remain--;
1095
1096         cmd = (struct hci_command_hdr *)(*fw_ptr);
1097         *fw_ptr += sizeof(*cmd);
1098         remain -= sizeof(*cmd);
1099
1100         /* Ensure that the remain firmware data is long enough than the length
1101          * of command parameter. If not, the firmware file is corrupted.
1102          */
1103         if (remain < cmd->plen) {
1104                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1105                 return -EFAULT;
1106         }
1107
1108         /* If there is a command that loads a patch in the firmware
1109          * file, then enable the patch upon success, otherwise just
1110          * disable the manufacturer mode, for example patch activation
1111          * is not required when the default firmware patch file is used
1112          * because there are no patch data to load.
1113          */
1114         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1115                 *disable_patch = 0;
1116
1117         cmd_param = *fw_ptr;
1118         *fw_ptr += cmd->plen;
1119         remain -= cmd->plen;
1120
1121         /* This reads the expected events when the above command is sent to the
1122          * device. Some vendor commands expects more than one events, for
1123          * example command status event followed by vendor specific event.
1124          * For this case, it only keeps the last expected event. so the command
1125          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1126          * last expected event.
1127          */
1128         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1129                 (*fw_ptr)++;
1130                 remain--;
1131
1132                 evt = (struct hci_event_hdr *)(*fw_ptr);
1133                 *fw_ptr += sizeof(*evt);
1134                 remain -= sizeof(*evt);
1135
1136                 if (remain < evt->plen) {
1137                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1138                                hdev->name);
1139                         return -EFAULT;
1140                 }
1141
1142                 evt_param = *fw_ptr;
1143                 *fw_ptr += evt->plen;
1144                 remain -= evt->plen;
1145         }
1146
1147         /* Every HCI commands in the firmware file has its correspond event.
1148          * If event is not found or remain is smaller than zero, the firmware
1149          * file is corrupted.
1150          */
1151         if (!evt || !evt_param || remain < 0) {
1152                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1153                 return -EFAULT;
1154         }
1155
1156         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1157                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1158         if (IS_ERR(skb)) {
1159                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1160                        hdev->name, cmd->opcode, PTR_ERR(skb));
1161                 return PTR_ERR(skb);
1162         }
1163
1164         /* It ensures that the returned event matches the event data read from
1165          * the firmware file. At fist, it checks the length and then
1166          * the contents of the event.
1167          */
1168         if (skb->len != evt->plen) {
1169                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1170                        le16_to_cpu(cmd->opcode));
1171                 kfree_skb(skb);
1172                 return -EFAULT;
1173         }
1174
1175         if (memcmp(skb->data, evt_param, evt->plen)) {
1176                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1177                        hdev->name, le16_to_cpu(cmd->opcode));
1178                 kfree_skb(skb);
1179                 return -EFAULT;
1180         }
1181         kfree_skb(skb);
1182
1183         return 0;
1184 }
1185
1186 static int btusb_setup_intel(struct hci_dev *hdev)
1187 {
1188         struct sk_buff *skb;
1189         const struct firmware *fw;
1190         const u8 *fw_ptr;
1191         int disable_patch;
1192         struct intel_version *ver;
1193
1194         const u8 mfg_enable[] = { 0x01, 0x00 };
1195         const u8 mfg_disable[] = { 0x00, 0x00 };
1196         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1197         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1198
1199         BT_DBG("%s", hdev->name);
1200
1201         /* The controller has a bug with the first HCI command sent to it
1202          * returning number of completed commands as zero. This would stall the
1203          * command processing in the Bluetooth core.
1204          *
1205          * As a workaround, send HCI Reset command first which will reset the
1206          * number of completed commands and allow normal command processing
1207          * from now on.
1208          */
1209         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1210         if (IS_ERR(skb)) {
1211                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1212                        hdev->name, PTR_ERR(skb));
1213                 return PTR_ERR(skb);
1214         }
1215         kfree_skb(skb);
1216
1217         /* Read Intel specific controller version first to allow selection of
1218          * which firmware file to load.
1219          *
1220          * The returned information are hardware variant and revision plus
1221          * firmware variant, revision and build number.
1222          */
1223         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1224         if (IS_ERR(skb)) {
1225                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1226                        hdev->name, PTR_ERR(skb));
1227                 return PTR_ERR(skb);
1228         }
1229
1230         if (skb->len != sizeof(*ver)) {
1231                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1232                 kfree_skb(skb);
1233                 return -EIO;
1234         }
1235
1236         ver = (struct intel_version *)skb->data;
1237         if (ver->status) {
1238                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1239                        ver->status);
1240                 kfree_skb(skb);
1241                 return -bt_to_errno(ver->status);
1242         }
1243
1244         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1245                 hdev->name, ver->hw_platform, ver->hw_variant,
1246                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1247                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1248                 ver->fw_patch_num);
1249
1250         /* fw_patch_num indicates the version of patch the device currently
1251          * have. If there is no patch data in the device, it is always 0x00.
1252          * So, if it is other than 0x00, no need to patch the deivce again.
1253          */
1254         if (ver->fw_patch_num) {
1255                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1256                         hdev->name, ver->fw_patch_num);
1257                 kfree_skb(skb);
1258                 return 0;
1259         }
1260
1261         /* Opens the firmware patch file based on the firmware version read
1262          * from the controller. If it fails to open the matching firmware
1263          * patch file, it tries to open the default firmware patch file.
1264          * If no patch file is found, allow the device to operate without
1265          * a patch.
1266          */
1267         fw = btusb_setup_intel_get_fw(hdev, ver);
1268         if (!fw) {
1269                 kfree_skb(skb);
1270                 return 0;
1271         }
1272         fw_ptr = fw->data;
1273
1274         /* This Intel specific command enables the manufacturer mode of the
1275          * controller.
1276          *
1277          * Only while this mode is enabled, the driver can download the
1278          * firmware patch data and configuration parameters.
1279          */
1280         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1281         if (IS_ERR(skb)) {
1282                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1283                        hdev->name, PTR_ERR(skb));
1284                 release_firmware(fw);
1285                 return PTR_ERR(skb);
1286         }
1287
1288         if (skb->data[0]) {
1289                 u8 evt_status = skb->data[0];
1290                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1291                        hdev->name, evt_status);
1292                 kfree_skb(skb);
1293                 release_firmware(fw);
1294                 return -bt_to_errno(evt_status);
1295         }
1296         kfree_skb(skb);
1297
1298         disable_patch = 1;
1299
1300         /* The firmware data file consists of list of Intel specific HCI
1301          * commands and its expected events. The first byte indicates the
1302          * type of the message, either HCI command or HCI event.
1303          *
1304          * It reads the command and its expected event from the firmware file,
1305          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1306          * the returned event is compared with the event read from the firmware
1307          * file and it will continue until all the messages are downloaded to
1308          * the controller.
1309          *
1310          * Once the firmware patching is completed successfully,
1311          * the manufacturer mode is disabled with reset and activating the
1312          * downloaded patch.
1313          *
1314          * If the firmware patching fails, the manufacturer mode is
1315          * disabled with reset and deactivating the patch.
1316          *
1317          * If the default patch file is used, no reset is done when disabling
1318          * the manufacturer.
1319          */
1320         while (fw->size > fw_ptr - fw->data) {
1321                 int ret;
1322
1323                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1324                                                  &disable_patch);
1325                 if (ret < 0)
1326                         goto exit_mfg_deactivate;
1327         }
1328
1329         release_firmware(fw);
1330
1331         if (disable_patch)
1332                 goto exit_mfg_disable;
1333
1334         /* Patching completed successfully and disable the manufacturer mode
1335          * with reset and activate the downloaded firmware patches.
1336          */
1337         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1338                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1339         if (IS_ERR(skb)) {
1340                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1341                        hdev->name, PTR_ERR(skb));
1342                 return PTR_ERR(skb);
1343         }
1344         kfree_skb(skb);
1345
1346         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1347                 hdev->name);
1348
1349         return 0;
1350
1351 exit_mfg_disable:
1352         /* Disable the manufacturer mode without reset */
1353         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1354                              HCI_INIT_TIMEOUT);
1355         if (IS_ERR(skb)) {
1356                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1357                        hdev->name, PTR_ERR(skb));
1358                 return PTR_ERR(skb);
1359         }
1360         kfree_skb(skb);
1361
1362         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1363         return 0;
1364
1365 exit_mfg_deactivate:
1366         release_firmware(fw);
1367
1368         /* Patching failed. Disable the manufacturer mode with reset and
1369          * deactivate the downloaded firmware patches.
1370          */
1371         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1372                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1373         if (IS_ERR(skb)) {
1374                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1375                        hdev->name, PTR_ERR(skb));
1376                 return PTR_ERR(skb);
1377         }
1378         kfree_skb(skb);
1379
1380         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1381                 hdev->name);
1382
1383         return 0;
1384 }
1385
1386 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1387 {
1388         struct btusb_data *data = hci_get_drvdata(hdev);
1389         struct usb_device *udev = data->udev;
1390         char fw_name[64];
1391         const struct firmware *fw;
1392         const u8 *fw_ptr;
1393         size_t fw_size;
1394         const struct hci_command_hdr *cmd;
1395         const u8 *cmd_param;
1396         u16 opcode;
1397         struct sk_buff *skb;
1398         struct hci_rp_read_local_version *ver;
1399         long ret;
1400
1401         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1402                  udev->product ? udev->product : "BCM",
1403                  le16_to_cpu(udev->descriptor.idVendor),
1404                  le16_to_cpu(udev->descriptor.idProduct));
1405
1406         ret = request_firmware(&fw, fw_name, &hdev->dev);
1407         if (ret < 0) {
1408                 BT_INFO("%s: BCM: patch %s not found", hdev->name,
1409                         fw_name);
1410                 return 0;
1411         }
1412
1413         /* Reset */
1414         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1415         if (IS_ERR(skb)) {
1416                 ret = PTR_ERR(skb);
1417                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1418                 goto done;
1419         }
1420         kfree_skb(skb);
1421
1422         /* Read Local Version Info */
1423         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1424                              HCI_INIT_TIMEOUT);
1425         if (IS_ERR(skb)) {
1426                 ret = PTR_ERR(skb);
1427                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1428                         hdev->name, ret);
1429                 goto done;
1430         }
1431
1432         if (skb->len != sizeof(*ver)) {
1433                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1434                         hdev->name);
1435                 kfree_skb(skb);
1436                 ret = -EIO;
1437                 goto done;
1438         }
1439
1440         ver = (struct hci_rp_read_local_version *) skb->data;
1441         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1442                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1443                 ver->lmp_ver, ver->lmp_subver);
1444         kfree_skb(skb);
1445
1446         /* Start Download */
1447         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1448         if (IS_ERR(skb)) {
1449                 ret = PTR_ERR(skb);
1450                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1451                         hdev->name, ret);
1452                 goto reset_fw;
1453         }
1454         kfree_skb(skb);
1455
1456         /* 50 msec delay after Download Minidrv completes */
1457         msleep(50);
1458
1459         fw_ptr = fw->data;
1460         fw_size = fw->size;
1461
1462         while (fw_size >= sizeof(*cmd)) {
1463                 cmd = (struct hci_command_hdr *) fw_ptr;
1464                 fw_ptr += sizeof(*cmd);
1465                 fw_size -= sizeof(*cmd);
1466
1467                 if (fw_size < cmd->plen) {
1468                         BT_ERR("%s: BCM: patch %s is corrupted",
1469                                 hdev->name, fw_name);
1470                         ret = -EINVAL;
1471                         goto reset_fw;
1472                 }
1473
1474                 cmd_param = fw_ptr;
1475                 fw_ptr += cmd->plen;
1476                 fw_size -= cmd->plen;
1477
1478                 opcode = le16_to_cpu(cmd->opcode);
1479
1480                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1481                                      HCI_INIT_TIMEOUT);
1482                 if (IS_ERR(skb)) {
1483                         ret = PTR_ERR(skb);
1484                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1485                                 hdev->name, opcode, ret);
1486                         goto reset_fw;
1487                 }
1488                 kfree_skb(skb);
1489         }
1490
1491         /* 250 msec delay after Launch Ram completes */
1492         msleep(250);
1493
1494 reset_fw:
1495         /* Reset */
1496         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1497         if (IS_ERR(skb)) {
1498                 ret = PTR_ERR(skb);
1499                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1500                 goto done;
1501         }
1502         kfree_skb(skb);
1503
1504         /* Read Local Version Info */
1505         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1506                              HCI_INIT_TIMEOUT);
1507         if (IS_ERR(skb)) {
1508                 ret = PTR_ERR(skb);
1509                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1510                         hdev->name, ret);
1511                 goto done;
1512         }
1513
1514         if (skb->len != sizeof(*ver)) {
1515                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1516                         hdev->name);
1517                 kfree_skb(skb);
1518                 ret = -EIO;
1519                 goto done;
1520         }
1521
1522         ver = (struct hci_rp_read_local_version *) skb->data;
1523         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1524                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1525                 ver->lmp_ver, ver->lmp_subver);
1526         kfree_skb(skb);
1527
1528 done:
1529         release_firmware(fw);
1530
1531         return ret;
1532 }
1533
1534 static int btusb_probe(struct usb_interface *intf,
1535                                 const struct usb_device_id *id)
1536 {
1537         struct usb_endpoint_descriptor *ep_desc;
1538         struct btusb_data *data;
1539         struct hci_dev *hdev;
1540         int i, err;
1541
1542         BT_DBG("intf %p id %p", intf, id);
1543
1544         /* interface numbers are hardcoded in the spec */
1545         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1546                 return -ENODEV;
1547
1548         if (!id->driver_info) {
1549                 const struct usb_device_id *match;
1550                 match = usb_match_id(intf, blacklist_table);
1551                 if (match)
1552                         id = match;
1553         }
1554
1555         if (id->driver_info == BTUSB_IGNORE)
1556                 return -ENODEV;
1557
1558         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1559                 return -ENODEV;
1560
1561         if (ignore_csr && id->driver_info & BTUSB_CSR)
1562                 return -ENODEV;
1563
1564         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1565                 return -ENODEV;
1566
1567         if (id->driver_info & BTUSB_ATH3012) {
1568                 struct usb_device *udev = interface_to_usbdev(intf);
1569
1570                 /* Old firmware would otherwise let ath3k driver load
1571                  * patch and sysconfig files */
1572                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1573                         return -ENODEV;
1574         }
1575
1576         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1577         if (!data)
1578                 return -ENOMEM;
1579
1580         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1581                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1582
1583                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1584                         data->intr_ep = ep_desc;
1585                         continue;
1586                 }
1587
1588                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1589                         data->bulk_tx_ep = ep_desc;
1590                         continue;
1591                 }
1592
1593                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1594                         data->bulk_rx_ep = ep_desc;
1595                         continue;
1596                 }
1597         }
1598
1599         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1600                 return -ENODEV;
1601
1602         data->cmdreq_type = USB_TYPE_CLASS;
1603
1604         data->udev = interface_to_usbdev(intf);
1605         data->intf = intf;
1606
1607         spin_lock_init(&data->lock);
1608
1609         INIT_WORK(&data->work, btusb_work);
1610         INIT_WORK(&data->waker, btusb_waker);
1611         spin_lock_init(&data->txlock);
1612
1613         init_usb_anchor(&data->tx_anchor);
1614         init_usb_anchor(&data->intr_anchor);
1615         init_usb_anchor(&data->bulk_anchor);
1616         init_usb_anchor(&data->isoc_anchor);
1617         init_usb_anchor(&data->deferred);
1618
1619         hdev = hci_alloc_dev();
1620         if (!hdev)
1621                 return -ENOMEM;
1622
1623         hdev->bus = HCI_USB;
1624         hci_set_drvdata(hdev, data);
1625
1626         data->hdev = hdev;
1627
1628         SET_HCIDEV_DEV(hdev, &intf->dev);
1629
1630         hdev->open   = btusb_open;
1631         hdev->close  = btusb_close;
1632         hdev->flush  = btusb_flush;
1633         hdev->send   = btusb_send_frame;
1634         hdev->notify = btusb_notify;
1635
1636         if (id->driver_info & BTUSB_BCM92035)
1637                 hdev->setup = btusb_setup_bcm92035;
1638
1639         if (id->driver_info & BTUSB_BCM_PATCHRAM)
1640                 hdev->setup = btusb_setup_bcm_patchram;
1641
1642         if (id->driver_info & BTUSB_INTEL)
1643                 hdev->setup = btusb_setup_intel;
1644
1645         /* Interface numbers are hardcoded in the specification */
1646         data->isoc = usb_ifnum_to_if(data->udev, 1);
1647
1648         if (!reset)
1649                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1650
1651         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1652                 if (!disable_scofix)
1653                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1654         }
1655
1656         if (id->driver_info & BTUSB_BROKEN_ISOC)
1657                 data->isoc = NULL;
1658
1659         if (id->driver_info & BTUSB_DIGIANSWER) {
1660                 data->cmdreq_type = USB_TYPE_VENDOR;
1661                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1662         }
1663
1664         if (id->driver_info & BTUSB_CSR) {
1665                 struct usb_device *udev = data->udev;
1666                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1667
1668                 /* Old firmware would otherwise execute USB reset */
1669                 if (bcdDevice < 0x117)
1670                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1671
1672                 /* Fake CSR devices with broken commands */
1673                 if (bcdDevice <= 0x100)
1674                         hdev->setup = btusb_setup_csr;
1675         }
1676
1677         if (id->driver_info & BTUSB_SNIFFER) {
1678                 struct usb_device *udev = data->udev;
1679
1680                 /* New sniffer firmware has crippled HCI interface */
1681                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1682                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1683
1684                 data->isoc = NULL;
1685         }
1686
1687         if (data->isoc) {
1688                 err = usb_driver_claim_interface(&btusb_driver,
1689                                                         data->isoc, data);
1690                 if (err < 0) {
1691                         hci_free_dev(hdev);
1692                         return err;
1693                 }
1694         }
1695
1696         err = hci_register_dev(hdev);
1697         if (err < 0) {
1698                 hci_free_dev(hdev);
1699                 return err;
1700         }
1701
1702         usb_set_intfdata(intf, data);
1703
1704         return 0;
1705 }
1706
1707 static void btusb_disconnect(struct usb_interface *intf)
1708 {
1709         struct btusb_data *data = usb_get_intfdata(intf);
1710         struct hci_dev *hdev;
1711
1712         BT_DBG("intf %p", intf);
1713
1714         if (!data)
1715                 return;
1716
1717         hdev = data->hdev;
1718         usb_set_intfdata(data->intf, NULL);
1719
1720         if (data->isoc)
1721                 usb_set_intfdata(data->isoc, NULL);
1722
1723         hci_unregister_dev(hdev);
1724
1725         if (intf == data->isoc)
1726                 usb_driver_release_interface(&btusb_driver, data->intf);
1727         else if (data->isoc)
1728                 usb_driver_release_interface(&btusb_driver, data->isoc);
1729
1730         hci_free_dev(hdev);
1731 }
1732
1733 #ifdef CONFIG_PM
1734 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1735 {
1736         struct btusb_data *data = usb_get_intfdata(intf);
1737
1738         BT_DBG("intf %p", intf);
1739
1740         if (data->suspend_count++)
1741                 return 0;
1742
1743         spin_lock_irq(&data->txlock);
1744         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1745                 set_bit(BTUSB_SUSPENDING, &data->flags);
1746                 spin_unlock_irq(&data->txlock);
1747         } else {
1748                 spin_unlock_irq(&data->txlock);
1749                 data->suspend_count--;
1750                 return -EBUSY;
1751         }
1752
1753         cancel_work_sync(&data->work);
1754
1755         btusb_stop_traffic(data);
1756         usb_kill_anchored_urbs(&data->tx_anchor);
1757
1758         return 0;
1759 }
1760
1761 static void play_deferred(struct btusb_data *data)
1762 {
1763         struct urb *urb;
1764         int err;
1765
1766         while ((urb = usb_get_from_anchor(&data->deferred))) {
1767                 err = usb_submit_urb(urb, GFP_ATOMIC);
1768                 if (err < 0)
1769                         break;
1770
1771                 data->tx_in_flight++;
1772         }
1773         usb_scuttle_anchored_urbs(&data->deferred);
1774 }
1775
1776 static int btusb_resume(struct usb_interface *intf)
1777 {
1778         struct btusb_data *data = usb_get_intfdata(intf);
1779         struct hci_dev *hdev = data->hdev;
1780         int err = 0;
1781
1782         BT_DBG("intf %p", intf);
1783
1784         if (--data->suspend_count)
1785                 return 0;
1786
1787         if (!test_bit(HCI_RUNNING, &hdev->flags))
1788                 goto done;
1789
1790         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1791                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1792                 if (err < 0) {
1793                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1794                         goto failed;
1795                 }
1796         }
1797
1798         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1799                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1800                 if (err < 0) {
1801                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1802                         goto failed;
1803                 }
1804
1805                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1806         }
1807
1808         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1809                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1810                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1811                 else
1812                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1813         }
1814
1815         spin_lock_irq(&data->txlock);
1816         play_deferred(data);
1817         clear_bit(BTUSB_SUSPENDING, &data->flags);
1818         spin_unlock_irq(&data->txlock);
1819         schedule_work(&data->work);
1820
1821         return 0;
1822
1823 failed:
1824         usb_scuttle_anchored_urbs(&data->deferred);
1825 done:
1826         spin_lock_irq(&data->txlock);
1827         clear_bit(BTUSB_SUSPENDING, &data->flags);
1828         spin_unlock_irq(&data->txlock);
1829
1830         return err;
1831 }
1832 #endif
1833
1834 static struct usb_driver btusb_driver = {
1835         .name           = "btusb",
1836         .probe          = btusb_probe,
1837         .disconnect     = btusb_disconnect,
1838 #ifdef CONFIG_PM
1839         .suspend        = btusb_suspend,
1840         .resume         = btusb_resume,
1841 #endif
1842         .id_table       = btusb_table,
1843         .supports_autosuspend = 1,
1844         .disable_hub_initiated_lpm = 1,
1845 };
1846
1847 module_usb_driver(btusb_driver);
1848
1849 module_param(ignore_dga, bool, 0644);
1850 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1851
1852 module_param(ignore_csr, bool, 0644);
1853 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1854
1855 module_param(ignore_sniffer, bool, 0644);
1856 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1857
1858 module_param(disable_scofix, bool, 0644);
1859 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1860
1861 module_param(force_scofix, bool, 0644);
1862 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1863
1864 module_param(reset, bool, 0644);
1865 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1866
1867 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1868 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1869 MODULE_VERSION(VERSION);
1870 MODULE_LICENSE("GPL");