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, 0x3008), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 178
 179         /* Atheros AR5BBU12 with sflash firmware */
 180         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 181
 182         /* Atheros AR5BBU12 with sflash firmware */
 183         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 185
 186         /* Broadcom BCM2035 */
 187         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 188         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 189         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 190
 191         /* Broadcom BCM2045 */
 192         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 193         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 194
 195         /* IBM/Lenovo ThinkPad with Broadcom chip */
 196         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 197         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 198
 199         /* HP laptop with Broadcom chip */
 200         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 201
 202         /* Dell laptop with Broadcom chip */
 203         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 204
 205         /* Dell Wireless 370 and 410 devices */
 206         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 207         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 208
 209         /* Belkin F8T012 and F8T013 devices */
 210         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 211         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 212
 213         /* Asus WL-BTD202 device */
 214         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 215
 216         /* Kensington Bluetooth USB adapter */
 217         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 218
 219         /* RTX Telecom based adapters with buggy SCO support */
 220         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 221         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 222
 223         /* CONWISE Technology based adapters with buggy SCO support */
 224         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 225
 226         /* Digianswer devices */
 227         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 228         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 229
 230         /* CSR BlueCore Bluetooth Sniffer */
 231         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 232
 233         /* Frontline ComProbe Bluetooth Sniffer */
 234         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 235
 236         /* Intel Bluetooth device */
 237         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 238         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 239
 240         { }     /* Terminating entry */
 241 };
 242
 243 #define BTUSB_MAX_ISOC_FRAMES   10
 244
 245 #define BTUSB_INTR_RUNNING      0
 246 #define BTUSB_BULK_RUNNING      1
 247 #define BTUSB_ISOC_RUNNING      2
 248 #define BTUSB_SUSPENDING        3
 249 #define BTUSB_DID_ISO_RESUME    4
 250
 251 struct btusb_data {
 252         struct hci_dev       *hdev;
 253         struct usb_device    *udev;
 254         struct usb_interface *intf;
 255         struct usb_interface *isoc;
 256
 257         spinlock_t lock;
 258
 259         unsigned long flags;
 260
 261         struct work_struct work;
 262         struct work_struct waker;
 263
 264         struct usb_anchor tx_anchor;
 265         struct usb_anchor intr_anchor;
 266         struct usb_anchor bulk_anchor;
 267         struct usb_anchor isoc_anchor;
 268         struct usb_anchor deferred;
 269         int tx_in_flight;
 270         spinlock_t txlock;
 271
 272         struct usb_endpoint_descriptor *intr_ep;
 273         struct usb_endpoint_descriptor *bulk_tx_ep;
 274         struct usb_endpoint_descriptor *bulk_rx_ep;
 275         struct usb_endpoint_descriptor *isoc_tx_ep;
 276         struct usb_endpoint_descriptor *isoc_rx_ep;
 277
 278         __u8 cmdreq_type;
 279
 280         unsigned int sco_num;
 281         int isoc_altsetting;
 282         int suspend_count;
 283 };
 284
 285 static int inc_tx(struct btusb_data *data)
 286 {
 287         unsigned long flags;
 288         int rv;
 289
 290         spin_lock_irqsave(&data->txlock, flags);
 291         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 292         if (!rv)
 293                 data->tx_in_flight++;
 294         spin_unlock_irqrestore(&data->txlock, flags);
 295
 296         return rv;
 297 }
 298
 299 static void btusb_intr_complete(struct urb *urb)
 300 {
 301         struct hci_dev *hdev = urb->context;
 302         struct btusb_data *data = hci_get_drvdata(hdev);
 303         int err;
 304
 305         BT_DBG("%s urb %p status %d count %d", hdev->name,
 306                                         urb, urb->status, urb->actual_length);
 307
 308         if (!test_bit(HCI_RUNNING, &hdev->flags))
 309                 return;
 310
 311         if (urb->status == 0) {
 312                 hdev->stat.byte_rx += urb->actual_length;
 313
 314                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 315                                                 urb->transfer_buffer,
 316                                                 urb->actual_length) < 0) {
 317                         BT_ERR("%s corrupted event packet", hdev->name);
 318                         hdev->stat.err_rx++;
 319                 }
 320         }
 321
 322         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 323                 return;
 324
 325         usb_mark_last_busy(data->udev);
 326         usb_anchor_urb(urb, &data->intr_anchor);
 327
 328         err = usb_submit_urb(urb, GFP_ATOMIC);
 329         if (err < 0) {
 330                 /* -EPERM: urb is being killed;
 331                  * -ENODEV: device got disconnected */
 332                 if (err != -EPERM && err != -ENODEV)
 333                         BT_ERR("%s urb %p failed to resubmit (%d)",
 334                                                 hdev->name, urb, -err);
 335                 usb_unanchor_urb(urb);
 336         }
 337 }
 338
 339 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 340 {
 341         struct btusb_data *data = hci_get_drvdata(hdev);
 342         struct urb *urb;
 343         unsigned char *buf;
 344         unsigned int pipe;
 345         int err, size;
 346
 347         BT_DBG("%s", hdev->name);
 348
 349         if (!data->intr_ep)
 350                 return -ENODEV;
 351
 352         urb = usb_alloc_urb(0, mem_flags);
 353         if (!urb)
 354                 return -ENOMEM;
 355
 356         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 357
 358         buf = kmalloc(size, mem_flags);
 359         if (!buf) {
 360                 usb_free_urb(urb);
 361                 return -ENOMEM;
 362         }
 363
 364         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 365
 366         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 367                                                 btusb_intr_complete, hdev,
 368                                                 data->intr_ep->bInterval);
 369
 370         urb->transfer_flags |= URB_FREE_BUFFER;
 371
 372         usb_anchor_urb(urb, &data->intr_anchor);
 373
 374         err = usb_submit_urb(urb, mem_flags);
 375         if (err < 0) {
 376                 if (err != -EPERM && err != -ENODEV)
 377                         BT_ERR("%s urb %p submission failed (%d)",
 378                                                 hdev->name, urb, -err);
 379                 usb_unanchor_urb(urb);
 380         }
 381
 382         usb_free_urb(urb);
 383
 384         return err;
 385 }
 386
 387 static void btusb_bulk_complete(struct urb *urb)
 388 {
 389         struct hci_dev *hdev = urb->context;
 390         struct btusb_data *data = hci_get_drvdata(hdev);
 391         int err;
 392
 393         BT_DBG("%s urb %p status %d count %d", hdev->name,
 394                                         urb, urb->status, urb->actual_length);
 395
 396         if (!test_bit(HCI_RUNNING, &hdev->flags))
 397                 return;
 398
 399         if (urb->status == 0) {
 400                 hdev->stat.byte_rx += urb->actual_length;
 401
 402                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 403                                                 urb->transfer_buffer,
 404                                                 urb->actual_length) < 0) {
 405                         BT_ERR("%s corrupted ACL packet", hdev->name);
 406                         hdev->stat.err_rx++;
 407                 }
 408         }
 409
 410         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 411                 return;
 412
 413         usb_anchor_urb(urb, &data->bulk_anchor);
 414         usb_mark_last_busy(data->udev);
 415
 416         err = usb_submit_urb(urb, GFP_ATOMIC);
 417         if (err < 0) {
 418                 /* -EPERM: urb is being killed;
 419                  * -ENODEV: device got disconnected */
 420                 if (err != -EPERM && err != -ENODEV)
 421                         BT_ERR("%s urb %p failed to resubmit (%d)",
 422                                                 hdev->name, urb, -err);
 423                 usb_unanchor_urb(urb);
 424         }
 425 }
 426
 427 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 428 {
 429         struct btusb_data *data = hci_get_drvdata(hdev);
 430         struct urb *urb;
 431         unsigned char *buf;
 432         unsigned int pipe;
 433         int err, size = HCI_MAX_FRAME_SIZE;
 434
 435         BT_DBG("%s", hdev->name);
 436
 437         if (!data->bulk_rx_ep)
 438                 return -ENODEV;
 439
 440         urb = usb_alloc_urb(0, mem_flags);
 441         if (!urb)
 442                 return -ENOMEM;
 443
 444         buf = kmalloc(size, mem_flags);
 445         if (!buf) {
 446                 usb_free_urb(urb);
 447                 return -ENOMEM;
 448         }
 449
 450         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 451
 452         usb_fill_bulk_urb(urb, data->udev, pipe,
 453                                         buf, size, btusb_bulk_complete, hdev);
 454
 455         urb->transfer_flags |= URB_FREE_BUFFER;
 456
 457         usb_mark_last_busy(data->udev);
 458         usb_anchor_urb(urb, &data->bulk_anchor);
 459
 460         err = usb_submit_urb(urb, mem_flags);
 461         if (err < 0) {
 462                 if (err != -EPERM && err != -ENODEV)
 463                         BT_ERR("%s urb %p submission failed (%d)",
 464                                                 hdev->name, urb, -err);
 465                 usb_unanchor_urb(urb);
 466         }
 467
 468         usb_free_urb(urb);
 469
 470         return err;
 471 }
 472
 473 static void btusb_isoc_complete(struct urb *urb)
 474 {
 475         struct hci_dev *hdev = urb->context;
 476         struct btusb_data *data = hci_get_drvdata(hdev);
 477         int i, err;
 478
 479         BT_DBG("%s urb %p status %d count %d", hdev->name,
 480                                         urb, urb->status, urb->actual_length);
 481
 482         if (!test_bit(HCI_RUNNING, &hdev->flags))
 483                 return;
 484
 485         if (urb->status == 0) {
 486                 for (i = 0; i < urb->number_of_packets; i++) {
 487                         unsigned int offset = urb->iso_frame_desc[i].offset;
 488                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 489
 490                         if (urb->iso_frame_desc[i].status)
 491                                 continue;
 492
 493                         hdev->stat.byte_rx += length;
 494
 495                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 496                                                 urb->transfer_buffer + offset,
 497                                                                 length) < 0) {
 498                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 499                                 hdev->stat.err_rx++;
 500                         }
 501                 }
 502         }
 503
 504         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 505                 return;
 506
 507         usb_anchor_urb(urb, &data->isoc_anchor);
 508
 509         err = usb_submit_urb(urb, GFP_ATOMIC);
 510         if (err < 0) {
 511                 /* -EPERM: urb is being killed;
 512                  * -ENODEV: device got disconnected */
 513                 if (err != -EPERM && err != -ENODEV)
 514                         BT_ERR("%s urb %p failed to resubmit (%d)",
 515                                                 hdev->name, urb, -err);
 516                 usb_unanchor_urb(urb);
 517         }
 518 }
 519
 520 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 521 {
 522         int i, offset = 0;
 523
 524         BT_DBG("len %d mtu %d", len, mtu);
 525
 526         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 527                                         i++, offset += mtu, len -= mtu) {
 528                 urb->iso_frame_desc[i].offset = offset;
 529                 urb->iso_frame_desc[i].length = mtu;
 530         }
 531
 532         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 533                 urb->iso_frame_desc[i].offset = offset;
 534                 urb->iso_frame_desc[i].length = len;
 535                 i++;
 536         }
 537
 538         urb->number_of_packets = i;
 539 }
 540
 541 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 542 {
 543         struct btusb_data *data = hci_get_drvdata(hdev);
 544         struct urb *urb;
 545         unsigned char *buf;
 546         unsigned int pipe;
 547         int err, size;
 548
 549         BT_DBG("%s", hdev->name);
 550
 551         if (!data->isoc_rx_ep)
 552                 return -ENODEV;
 553
 554         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 555         if (!urb)
 556                 return -ENOMEM;
 557
 558         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 559                                                 BTUSB_MAX_ISOC_FRAMES;
 560
 561         buf = kmalloc(size, mem_flags);
 562         if (!buf) {
 563                 usb_free_urb(urb);
 564                 return -ENOMEM;
 565         }
 566
 567         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 568
 569         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 570                                 hdev, data->isoc_rx_ep->bInterval);
 571
 572         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 573
 574         __fill_isoc_descriptor(urb, size,
 575                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 576
 577         usb_anchor_urb(urb, &data->isoc_anchor);
 578
 579         err = usb_submit_urb(urb, mem_flags);
 580         if (err < 0) {
 581                 if (err != -EPERM && err != -ENODEV)
 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 = hci_get_drvdata(hdev);
 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 = hci_get_drvdata(hdev);
 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 = hci_get_drvdata(hdev);
 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 = hci_get_drvdata(hdev);
 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 hci_dev *hdev, struct sk_buff *skb)
 733 {
 734         struct btusb_data *data = hci_get_drvdata(hdev);
 735         struct usb_ctrlrequest *dr;
 736         struct urb *urb;
 737         unsigned int pipe;
 738         int err;
 739
 740         BT_DBG("%s", hdev->name);
 741
 742         if (!test_bit(HCI_RUNNING, &hdev->flags))
 743                 return -EBUSY;
 744
 745         skb->dev = (void *) hdev;
 746
 747         switch (bt_cb(skb)->pkt_type) {
 748         case HCI_COMMAND_PKT:
 749                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 750                 if (!urb)
 751                         return -ENOMEM;
 752
 753                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 754                 if (!dr) {
 755                         usb_free_urb(urb);
 756                         return -ENOMEM;
 757                 }
 758
 759                 dr->bRequestType = data->cmdreq_type;
 760                 dr->bRequest     = 0;
 761                 dr->wIndex       = 0;
 762                 dr->wValue       = 0;
 763                 dr->wLength      = __cpu_to_le16(skb->len);
 764
 765                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 766
 767                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 768                                 skb->data, skb->len, btusb_tx_complete, skb);
 769
 770                 hdev->stat.cmd_tx++;
 771                 break;
 772
 773         case HCI_ACLDATA_PKT:
 774                 if (!data->bulk_tx_ep)
 775                         return -ENODEV;
 776
 777                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 778                 if (!urb)
 779                         return -ENOMEM;
 780
 781                 pipe = usb_sndbulkpipe(data->udev,
 782                                         data->bulk_tx_ep->bEndpointAddress);
 783
 784                 usb_fill_bulk_urb(urb, data->udev, pipe,
 785                                 skb->data, skb->len, btusb_tx_complete, skb);
 786
 787                 hdev->stat.acl_tx++;
 788                 break;
 789
 790         case HCI_SCODATA_PKT:
 791                 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
 792                         return -ENODEV;
 793
 794                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 795                 if (!urb)
 796                         return -ENOMEM;
 797
 798                 pipe = usb_sndisocpipe(data->udev,
 799                                         data->isoc_tx_ep->bEndpointAddress);
 800
 801                 usb_fill_int_urb(urb, data->udev, pipe,
 802                                 skb->data, skb->len, btusb_isoc_tx_complete,
 803                                 skb, data->isoc_tx_ep->bInterval);
 804
 805                 urb->transfer_flags  = URB_ISO_ASAP;
 806
 807                 __fill_isoc_descriptor(urb, skb->len,
 808                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 809
 810                 hdev->stat.sco_tx++;
 811                 goto skip_waking;
 812
 813         default:
 814                 return -EILSEQ;
 815         }
 816
 817         err = inc_tx(data);
 818         if (err) {
 819                 usb_anchor_urb(urb, &data->deferred);
 820                 schedule_work(&data->waker);
 821                 err = 0;
 822                 goto done;
 823         }
 824
 825 skip_waking:
 826         usb_anchor_urb(urb, &data->tx_anchor);
 827
 828         err = usb_submit_urb(urb, GFP_ATOMIC);
 829         if (err < 0) {
 830                 if (err != -EPERM && err != -ENODEV)
 831                         BT_ERR("%s urb %p submission failed (%d)",
 832                                                 hdev->name, urb, -err);
 833                 kfree(urb->setup_packet);
 834                 usb_unanchor_urb(urb);
 835         } else {
 836                 usb_mark_last_busy(data->udev);
 837         }
 838
 839 done:
 840         usb_free_urb(urb);
 841         return err;
 842 }
 843
 844 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 845 {
 846         struct btusb_data *data = hci_get_drvdata(hdev);
 847
 848         BT_DBG("%s evt %d", hdev->name, evt);
 849
 850         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
 851                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
 852                 schedule_work(&data->work);
 853         }
 854 }
 855
 856 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 857 {
 858         struct btusb_data *data = hci_get_drvdata(hdev);
 859         struct usb_interface *intf = data->isoc;
 860         struct usb_endpoint_descriptor *ep_desc;
 861         int i, err;
 862
 863         if (!data->isoc)
 864                 return -ENODEV;
 865
 866         err = usb_set_interface(data->udev, 1, altsetting);
 867         if (err < 0) {
 868                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 869                 return err;
 870         }
 871
 872         data->isoc_altsetting = altsetting;
 873
 874         data->isoc_tx_ep = NULL;
 875         data->isoc_rx_ep = NULL;
 876
 877         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 878                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 879
 880                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 881                         data->isoc_tx_ep = ep_desc;
 882                         continue;
 883                 }
 884
 885                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 886                         data->isoc_rx_ep = ep_desc;
 887                         continue;
 888                 }
 889         }
 890
 891         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 892                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 893                 return -ENODEV;
 894         }
 895
 896         return 0;
 897 }
 898
 899 static void btusb_work(struct work_struct *work)
 900 {
 901         struct btusb_data *data = container_of(work, struct btusb_data, work);
 902         struct hci_dev *hdev = data->hdev;
 903         int new_alts;
 904         int err;
 905
 906         if (data->sco_num > 0) {
 907                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 908                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 909                         if (err < 0) {
 910                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 911                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 912                                 return;
 913                         }
 914
 915                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 916                 }
 917
 918                 if (hdev->voice_setting & 0x0020) {
 919                         static const int alts[3] = { 2, 4, 5 };
 920                         new_alts = alts[data->sco_num - 1];
 921                 } else {
 922                         new_alts = data->sco_num;
 923                 }
 924
 925                 if (data->isoc_altsetting != new_alts) {
 926                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 927                         usb_kill_anchored_urbs(&data->isoc_anchor);
 928
 929                         if (__set_isoc_interface(hdev, new_alts) < 0)
 930                                 return;
 931                 }
 932
 933                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 934                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 935                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 936                         else
 937                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 938                 }
 939         } else {
 940                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 941                 usb_kill_anchored_urbs(&data->isoc_anchor);
 942
 943                 __set_isoc_interface(hdev, 0);
 944                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 945                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 946         }
 947 }
 948
 949 static void btusb_waker(struct work_struct *work)
 950 {
 951         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 952         int err;
 953
 954         err = usb_autopm_get_interface(data->intf);
 955         if (err < 0)
 956                 return;
 957
 958         usb_autopm_put_interface(data->intf);
 959 }
 960
 961 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 962 {
 963         struct sk_buff *skb;
 964         u8 val = 0x00;
 965
 966         BT_DBG("%s", hdev->name);
 967
 968         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 969         if (IS_ERR(skb))
 970                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 971         else
 972                 kfree_skb(skb);
 973
 974         return 0;
 975 }
 976
 977 static int btusb_setup_csr(struct hci_dev *hdev)
 978 {
 979         struct hci_rp_read_local_version *rp;
 980         struct sk_buff *skb;
 981         int ret;
 982
 983         BT_DBG("%s", hdev->name);
 984
 985         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
 986                              HCI_INIT_TIMEOUT);
 987         if (IS_ERR(skb)) {
 988                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
 989                 return -PTR_ERR(skb);
 990         }
 991
 992         rp = (struct hci_rp_read_local_version *) skb->data;
 993
 994         if (!rp->status) {
 995                 if (le16_to_cpu(rp->manufacturer) != 10) {
 996                         /* Clear the reset quirk since this is not an actual
 997                          * early Bluetooth 1.1 device from CSR.
 998                          */
 999                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1000
1001                         /* These fake CSR controllers have all a broken
1002                          * stored link key handling and so just disable it.
1003                          */
1004                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1005                                 &hdev->quirks);
1006                 }
1007         }
1008
1009         ret = -bt_to_errno(rp->status);
1010
1011         kfree_skb(skb);
1012
1013         return ret;
1014 }
1015
1016 struct intel_version {
1017         u8 status;
1018         u8 hw_platform;
1019         u8 hw_variant;
1020         u8 hw_revision;
1021         u8 fw_variant;
1022         u8 fw_revision;
1023         u8 fw_build_num;
1024         u8 fw_build_ww;
1025         u8 fw_build_yy;
1026         u8 fw_patch_num;
1027 } __packed;
1028
1029 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1030                                                 struct intel_version *ver)
1031 {
1032         const struct firmware *fw;
1033         char fwname[64];
1034         int ret;
1035
1036         snprintf(fwname, sizeof(fwname),
1037                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1038                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1039                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1040                  ver->fw_build_ww, ver->fw_build_yy);
1041
1042         ret = request_firmware(&fw, fwname, &hdev->dev);
1043         if (ret < 0) {
1044                 if (ret == -EINVAL) {
1045                         BT_ERR("%s Intel firmware file request failed (%d)",
1046                                hdev->name, ret);
1047                         return NULL;
1048                 }
1049
1050                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1051                        hdev->name, fwname, ret);
1052
1053                 /* If the correct firmware patch file is not found, use the
1054                  * default firmware patch file instead
1055                  */
1056                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1057                          ver->hw_platform, ver->hw_variant);
1058                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1059                         BT_ERR("%s failed to open default Intel fw file: %s",
1060                                hdev->name, fwname);
1061                         return NULL;
1062                 }
1063         }
1064
1065         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1066
1067         return fw;
1068 }
1069
1070 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1071                                       const struct firmware *fw,
1072                                       const u8 **fw_ptr, int *disable_patch)
1073 {
1074         struct sk_buff *skb;
1075         struct hci_command_hdr *cmd;
1076         const u8 *cmd_param;
1077         struct hci_event_hdr *evt = NULL;
1078         const u8 *evt_param = NULL;
1079         int remain = fw->size - (*fw_ptr - fw->data);
1080
1081         /* The first byte indicates the types of the patch command or event.
1082          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1083          * in the current firmware buffer doesn't start with 0x01 or
1084          * the size of remain buffer is smaller than HCI command header,
1085          * the firmware file is corrupted and it should stop the patching
1086          * process.
1087          */
1088         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1089                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1090                 return -EINVAL;
1091         }
1092         (*fw_ptr)++;
1093         remain--;
1094
1095         cmd = (struct hci_command_hdr *)(*fw_ptr);
1096         *fw_ptr += sizeof(*cmd);
1097         remain -= sizeof(*cmd);
1098
1099         /* Ensure that the remain firmware data is long enough than the length
1100          * of command parameter. If not, the firmware file is corrupted.
1101          */
1102         if (remain < cmd->plen) {
1103                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1104                 return -EFAULT;
1105         }
1106
1107         /* If there is a command that loads a patch in the firmware
1108          * file, then enable the patch upon success, otherwise just
1109          * disable the manufacturer mode, for example patch activation
1110          * is not required when the default firmware patch file is used
1111          * because there are no patch data to load.
1112          */
1113         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1114                 *disable_patch = 0;
1115
1116         cmd_param = *fw_ptr;
1117         *fw_ptr += cmd->plen;
1118         remain -= cmd->plen;
1119
1120         /* This reads the expected events when the above command is sent to the
1121          * device. Some vendor commands expects more than one events, for
1122          * example command status event followed by vendor specific event.
1123          * For this case, it only keeps the last expected event. so the command
1124          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1125          * last expected event.
1126          */
1127         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1128                 (*fw_ptr)++;
1129                 remain--;
1130
1131                 evt = (struct hci_event_hdr *)(*fw_ptr);
1132                 *fw_ptr += sizeof(*evt);
1133                 remain -= sizeof(*evt);
1134
1135                 if (remain < evt->plen) {
1136                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1137                                hdev->name);
1138                         return -EFAULT;
1139                 }
1140
1141                 evt_param = *fw_ptr;
1142                 *fw_ptr += evt->plen;
1143                 remain -= evt->plen;
1144         }
1145
1146         /* Every HCI commands in the firmware file has its correspond event.
1147          * If event is not found or remain is smaller than zero, the firmware
1148          * file is corrupted.
1149          */
1150         if (!evt || !evt_param || remain < 0) {
1151                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1152                 return -EFAULT;
1153         }
1154
1155         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1156                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1157         if (IS_ERR(skb)) {
1158                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1159                        hdev->name, cmd->opcode, PTR_ERR(skb));
1160                 return PTR_ERR(skb);
1161         }
1162
1163         /* It ensures that the returned event matches the event data read from
1164          * the firmware file. At fist, it checks the length and then
1165          * the contents of the event.
1166          */
1167         if (skb->len != evt->plen) {
1168                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1169                        le16_to_cpu(cmd->opcode));
1170                 kfree_skb(skb);
1171                 return -EFAULT;
1172         }
1173
1174         if (memcmp(skb->data, evt_param, evt->plen)) {
1175                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1176                        hdev->name, le16_to_cpu(cmd->opcode));
1177                 kfree_skb(skb);
1178                 return -EFAULT;
1179         }
1180         kfree_skb(skb);
1181
1182         return 0;
1183 }
1184
1185 static int btusb_setup_intel(struct hci_dev *hdev)
1186 {
1187         struct sk_buff *skb;
1188         const struct firmware *fw;
1189         const u8 *fw_ptr;
1190         int disable_patch;
1191         struct intel_version *ver;
1192
1193         const u8 mfg_enable[] = { 0x01, 0x00 };
1194         const u8 mfg_disable[] = { 0x00, 0x00 };
1195         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1196         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1197
1198         BT_DBG("%s", hdev->name);
1199
1200         /* The controller has a bug with the first HCI command sent to it
1201          * returning number of completed commands as zero. This would stall the
1202          * command processing in the Bluetooth core.
1203          *
1204          * As a workaround, send HCI Reset command first which will reset the
1205          * number of completed commands and allow normal command processing
1206          * from now on.
1207          */
1208         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1209         if (IS_ERR(skb)) {
1210                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1211                        hdev->name, PTR_ERR(skb));
1212                 return PTR_ERR(skb);
1213         }
1214         kfree_skb(skb);
1215
1216         /* Read Intel specific controller version first to allow selection of
1217          * which firmware file to load.
1218          *
1219          * The returned information are hardware variant and revision plus
1220          * firmware variant, revision and build number.
1221          */
1222         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1223         if (IS_ERR(skb)) {
1224                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1225                        hdev->name, PTR_ERR(skb));
1226                 return PTR_ERR(skb);
1227         }
1228
1229         if (skb->len != sizeof(*ver)) {
1230                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1231                 kfree_skb(skb);
1232                 return -EIO;
1233         }
1234
1235         ver = (struct intel_version *)skb->data;
1236         if (ver->status) {
1237                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1238                        ver->status);
1239                 kfree_skb(skb);
1240                 return -bt_to_errno(ver->status);
1241         }
1242
1243         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1244                 hdev->name, ver->hw_platform, ver->hw_variant,
1245                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1246                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1247                 ver->fw_patch_num);
1248
1249         /* fw_patch_num indicates the version of patch the device currently
1250          * have. If there is no patch data in the device, it is always 0x00.
1251          * So, if it is other than 0x00, no need to patch the deivce again.
1252          */
1253         if (ver->fw_patch_num) {
1254                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1255                         hdev->name, ver->fw_patch_num);
1256                 kfree_skb(skb);
1257                 return 0;
1258         }
1259
1260         /* Opens the firmware patch file based on the firmware version read
1261          * from the controller. If it fails to open the matching firmware
1262          * patch file, it tries to open the default firmware patch file.
1263          * If no patch file is found, allow the device to operate without
1264          * a patch.
1265          */
1266         fw = btusb_setup_intel_get_fw(hdev, ver);
1267         if (!fw) {
1268                 kfree_skb(skb);
1269                 return 0;
1270         }
1271         fw_ptr = fw->data;
1272
1273         /* This Intel specific command enables the manufacturer mode of the
1274          * controller.
1275          *
1276          * Only while this mode is enabled, the driver can download the
1277          * firmware patch data and configuration parameters.
1278          */
1279         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1280         if (IS_ERR(skb)) {
1281                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1282                        hdev->name, PTR_ERR(skb));
1283                 release_firmware(fw);
1284                 return PTR_ERR(skb);
1285         }
1286
1287         if (skb->data[0]) {
1288                 u8 evt_status = skb->data[0];
1289                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1290                        hdev->name, evt_status);
1291                 kfree_skb(skb);
1292                 release_firmware(fw);
1293                 return -bt_to_errno(evt_status);
1294         }
1295         kfree_skb(skb);
1296
1297         disable_patch = 1;
1298
1299         /* The firmware data file consists of list of Intel specific HCI
1300          * commands and its expected events. The first byte indicates the
1301          * type of the message, either HCI command or HCI event.
1302          *
1303          * It reads the command and its expected event from the firmware file,
1304          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1305          * the returned event is compared with the event read from the firmware
1306          * file and it will continue until all the messages are downloaded to
1307          * the controller.
1308          *
1309          * Once the firmware patching is completed successfully,
1310          * the manufacturer mode is disabled with reset and activating the
1311          * downloaded patch.
1312          *
1313          * If the firmware patching fails, the manufacturer mode is
1314          * disabled with reset and deactivating the patch.
1315          *
1316          * If the default patch file is used, no reset is done when disabling
1317          * the manufacturer.
1318          */
1319         while (fw->size > fw_ptr - fw->data) {
1320                 int ret;
1321
1322                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1323                                                  &disable_patch);
1324                 if (ret < 0)
1325                         goto exit_mfg_deactivate;
1326         }
1327
1328         release_firmware(fw);
1329
1330         if (disable_patch)
1331                 goto exit_mfg_disable;
1332
1333         /* Patching completed successfully and disable the manufacturer mode
1334          * with reset and activate the downloaded firmware patches.
1335          */
1336         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1337                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1338         if (IS_ERR(skb)) {
1339                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1340                        hdev->name, PTR_ERR(skb));
1341                 return PTR_ERR(skb);
1342         }
1343         kfree_skb(skb);
1344
1345         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1346                 hdev->name);
1347
1348         return 0;
1349
1350 exit_mfg_disable:
1351         /* Disable the manufacturer mode without reset */
1352         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1353                              HCI_INIT_TIMEOUT);
1354         if (IS_ERR(skb)) {
1355                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1356                        hdev->name, PTR_ERR(skb));
1357                 return PTR_ERR(skb);
1358         }
1359         kfree_skb(skb);
1360
1361         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1362         return 0;
1363
1364 exit_mfg_deactivate:
1365         release_firmware(fw);
1366
1367         /* Patching failed. Disable the manufacturer mode with reset and
1368          * deactivate the downloaded firmware patches.
1369          */
1370         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1371                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1372         if (IS_ERR(skb)) {
1373                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1374                        hdev->name, PTR_ERR(skb));
1375                 return PTR_ERR(skb);
1376         }
1377         kfree_skb(skb);
1378
1379         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1380                 hdev->name);
1381
1382         return 0;
1383 }
1384
1385 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1386 {
1387         struct btusb_data *data = hci_get_drvdata(hdev);
1388         struct usb_device *udev = data->udev;
1389         char fw_name[64];
1390         const struct firmware *fw;
1391         const u8 *fw_ptr;
1392         size_t fw_size;
1393         const struct hci_command_hdr *cmd;
1394         const u8 *cmd_param;
1395         u16 opcode;
1396         struct sk_buff *skb;
1397         struct hci_rp_read_local_version *ver;
1398         long ret;
1399
1400         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1401                  udev->product ? udev->product : "BCM",
1402                  le16_to_cpu(udev->descriptor.idVendor),
1403                  le16_to_cpu(udev->descriptor.idProduct));
1404
1405         ret = request_firmware(&fw, fw_name, &hdev->dev);
1406         if (ret < 0) {
1407                 BT_INFO("%s: BCM: patch %s not found", hdev->name,
1408                         fw_name);
1409                 return 0;
1410         }
1411
1412         /* Reset */
1413         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1414         if (IS_ERR(skb)) {
1415                 ret = PTR_ERR(skb);
1416                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1417                 goto done;
1418         }
1419         kfree_skb(skb);
1420
1421         /* Read Local Version Info */
1422         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1423                              HCI_INIT_TIMEOUT);
1424         if (IS_ERR(skb)) {
1425                 ret = PTR_ERR(skb);
1426                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1427                         hdev->name, ret);
1428                 goto done;
1429         }
1430
1431         if (skb->len != sizeof(*ver)) {
1432                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1433                         hdev->name);
1434                 kfree_skb(skb);
1435                 ret = -EIO;
1436                 goto done;
1437         }
1438
1439         ver = (struct hci_rp_read_local_version *) skb->data;
1440         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1441                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1442                 ver->lmp_ver, ver->lmp_subver);
1443         kfree_skb(skb);
1444
1445         /* Start Download */
1446         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1447         if (IS_ERR(skb)) {
1448                 ret = PTR_ERR(skb);
1449                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1450                         hdev->name, ret);
1451                 goto reset_fw;
1452         }
1453         kfree_skb(skb);
1454
1455         /* 50 msec delay after Download Minidrv completes */
1456         msleep(50);
1457
1458         fw_ptr = fw->data;
1459         fw_size = fw->size;
1460
1461         while (fw_size >= sizeof(*cmd)) {
1462                 cmd = (struct hci_command_hdr *) fw_ptr;
1463                 fw_ptr += sizeof(*cmd);
1464                 fw_size -= sizeof(*cmd);
1465
1466                 if (fw_size < cmd->plen) {
1467                         BT_ERR("%s: BCM: patch %s is corrupted",
1468                                 hdev->name, fw_name);
1469                         ret = -EINVAL;
1470                         goto reset_fw;
1471                 }
1472
1473                 cmd_param = fw_ptr;
1474                 fw_ptr += cmd->plen;
1475                 fw_size -= cmd->plen;
1476
1477                 opcode = le16_to_cpu(cmd->opcode);
1478
1479                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1480                                      HCI_INIT_TIMEOUT);
1481                 if (IS_ERR(skb)) {
1482                         ret = PTR_ERR(skb);
1483                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1484                                 hdev->name, opcode, ret);
1485                         goto reset_fw;
1486                 }
1487                 kfree_skb(skb);
1488         }
1489
1490         /* 250 msec delay after Launch Ram completes */
1491         msleep(250);
1492
1493 reset_fw:
1494         /* Reset */
1495         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1496         if (IS_ERR(skb)) {
1497                 ret = PTR_ERR(skb);
1498                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1499                 goto done;
1500         }
1501         kfree_skb(skb);
1502
1503         /* Read Local Version Info */
1504         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1505                              HCI_INIT_TIMEOUT);
1506         if (IS_ERR(skb)) {
1507                 ret = PTR_ERR(skb);
1508                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1509                         hdev->name, ret);
1510                 goto done;
1511         }
1512
1513         if (skb->len != sizeof(*ver)) {
1514                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1515                         hdev->name);
1516                 kfree_skb(skb);
1517                 ret = -EIO;
1518                 goto done;
1519         }
1520
1521         ver = (struct hci_rp_read_local_version *) skb->data;
1522         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1523                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1524                 ver->lmp_ver, ver->lmp_subver);
1525         kfree_skb(skb);
1526
1527 done:
1528         release_firmware(fw);
1529
1530         return ret;
1531 }
1532
1533 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1534 {
1535         struct sk_buff *skb;
1536         long ret;
1537
1538         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
1539         if (IS_ERR(skb)) {
1540                 ret = PTR_ERR(skb);
1541                 BT_ERR("%s: BCM: Change address command failed (%ld)",
1542                         hdev->name, ret);
1543                 return ret;
1544         }
1545         kfree_skb(skb);
1546
1547         return 0;
1548 }
1549
1550 static int btusb_probe(struct usb_interface *intf,
1551                                 const struct usb_device_id *id)
1552 {
1553         struct usb_endpoint_descriptor *ep_desc;
1554         struct btusb_data *data;
1555         struct hci_dev *hdev;
1556         int i, err;
1557
1558         BT_DBG("intf %p id %p", intf, id);
1559
1560         /* interface numbers are hardcoded in the spec */
1561         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1562                 return -ENODEV;
1563
1564         if (!id->driver_info) {
1565                 const struct usb_device_id *match;
1566                 match = usb_match_id(intf, blacklist_table);
1567                 if (match)
1568                         id = match;
1569         }
1570
1571         if (id->driver_info == BTUSB_IGNORE)
1572                 return -ENODEV;
1573
1574         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1575                 return -ENODEV;
1576
1577         if (ignore_csr && id->driver_info & BTUSB_CSR)
1578                 return -ENODEV;
1579
1580         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1581                 return -ENODEV;
1582
1583         if (id->driver_info & BTUSB_ATH3012) {
1584                 struct usb_device *udev = interface_to_usbdev(intf);
1585
1586                 /* Old firmware would otherwise let ath3k driver load
1587                  * patch and sysconfig files */
1588                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1589                         return -ENODEV;
1590         }
1591
1592         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1593         if (!data)
1594                 return -ENOMEM;
1595
1596         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1597                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1598
1599                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1600                         data->intr_ep = ep_desc;
1601                         continue;
1602                 }
1603
1604                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1605                         data->bulk_tx_ep = ep_desc;
1606                         continue;
1607                 }
1608
1609                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1610                         data->bulk_rx_ep = ep_desc;
1611                         continue;
1612                 }
1613         }
1614
1615         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1616                 return -ENODEV;
1617
1618         data->cmdreq_type = USB_TYPE_CLASS;
1619
1620         data->udev = interface_to_usbdev(intf);
1621         data->intf = intf;
1622
1623         spin_lock_init(&data->lock);
1624
1625         INIT_WORK(&data->work, btusb_work);
1626         INIT_WORK(&data->waker, btusb_waker);
1627         spin_lock_init(&data->txlock);
1628
1629         init_usb_anchor(&data->tx_anchor);
1630         init_usb_anchor(&data->intr_anchor);
1631         init_usb_anchor(&data->bulk_anchor);
1632         init_usb_anchor(&data->isoc_anchor);
1633         init_usb_anchor(&data->deferred);
1634
1635         hdev = hci_alloc_dev();
1636         if (!hdev)
1637                 return -ENOMEM;
1638
1639         hdev->bus = HCI_USB;
1640         hci_set_drvdata(hdev, data);
1641
1642         data->hdev = hdev;
1643
1644         SET_HCIDEV_DEV(hdev, &intf->dev);
1645
1646         hdev->open   = btusb_open;
1647         hdev->close  = btusb_close;
1648         hdev->flush  = btusb_flush;
1649         hdev->send   = btusb_send_frame;
1650         hdev->notify = btusb_notify;
1651
1652         if (id->driver_info & BTUSB_BCM92035)
1653                 hdev->setup = btusb_setup_bcm92035;
1654
1655         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
1656                 hdev->setup = btusb_setup_bcm_patchram;
1657                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
1658         }
1659
1660         if (id->driver_info & BTUSB_INTEL)
1661                 hdev->setup = btusb_setup_intel;
1662
1663         /* Interface numbers are hardcoded in the specification */
1664         data->isoc = usb_ifnum_to_if(data->udev, 1);
1665
1666         if (!reset)
1667                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1668
1669         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1670                 if (!disable_scofix)
1671                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1672         }
1673
1674         if (id->driver_info & BTUSB_BROKEN_ISOC)
1675                 data->isoc = NULL;
1676
1677         if (id->driver_info & BTUSB_DIGIANSWER) {
1678                 data->cmdreq_type = USB_TYPE_VENDOR;
1679                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1680         }
1681
1682         if (id->driver_info & BTUSB_CSR) {
1683                 struct usb_device *udev = data->udev;
1684                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1685
1686                 /* Old firmware would otherwise execute USB reset */
1687                 if (bcdDevice < 0x117)
1688                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1689
1690                 /* Fake CSR devices with broken commands */
1691                 if (bcdDevice <= 0x100)
1692                         hdev->setup = btusb_setup_csr;
1693         }
1694
1695         if (id->driver_info & BTUSB_SNIFFER) {
1696                 struct usb_device *udev = data->udev;
1697
1698                 /* New sniffer firmware has crippled HCI interface */
1699                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1700                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1701
1702                 data->isoc = NULL;
1703         }
1704
1705         if (data->isoc) {
1706                 err = usb_driver_claim_interface(&btusb_driver,
1707                                                         data->isoc, data);
1708                 if (err < 0) {
1709                         hci_free_dev(hdev);
1710                         return err;
1711                 }
1712         }
1713
1714         err = hci_register_dev(hdev);
1715         if (err < 0) {
1716                 hci_free_dev(hdev);
1717                 return err;
1718         }
1719
1720         usb_set_intfdata(intf, data);
1721
1722         return 0;
1723 }
1724
1725 static void btusb_disconnect(struct usb_interface *intf)
1726 {
1727         struct btusb_data *data = usb_get_intfdata(intf);
1728         struct hci_dev *hdev;
1729
1730         BT_DBG("intf %p", intf);
1731
1732         if (!data)
1733                 return;
1734
1735         hdev = data->hdev;
1736         usb_set_intfdata(data->intf, NULL);
1737
1738         if (data->isoc)
1739                 usb_set_intfdata(data->isoc, NULL);
1740
1741         hci_unregister_dev(hdev);
1742
1743         if (intf == data->isoc)
1744                 usb_driver_release_interface(&btusb_driver, data->intf);
1745         else if (data->isoc)
1746                 usb_driver_release_interface(&btusb_driver, data->isoc);
1747
1748         hci_free_dev(hdev);
1749 }
1750
1751 #ifdef CONFIG_PM
1752 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1753 {
1754         struct btusb_data *data = usb_get_intfdata(intf);
1755
1756         BT_DBG("intf %p", intf);
1757
1758         if (data->suspend_count++)
1759                 return 0;
1760
1761         spin_lock_irq(&data->txlock);
1762         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1763                 set_bit(BTUSB_SUSPENDING, &data->flags);
1764                 spin_unlock_irq(&data->txlock);
1765         } else {
1766                 spin_unlock_irq(&data->txlock);
1767                 data->suspend_count--;
1768                 return -EBUSY;
1769         }
1770
1771         cancel_work_sync(&data->work);
1772
1773         btusb_stop_traffic(data);
1774         usb_kill_anchored_urbs(&data->tx_anchor);
1775
1776         return 0;
1777 }
1778
1779 static void play_deferred(struct btusb_data *data)
1780 {
1781         struct urb *urb;
1782         int err;
1783
1784         while ((urb = usb_get_from_anchor(&data->deferred))) {
1785                 err = usb_submit_urb(urb, GFP_ATOMIC);
1786                 if (err < 0)
1787                         break;
1788
1789                 data->tx_in_flight++;
1790         }
1791         usb_scuttle_anchored_urbs(&data->deferred);
1792 }
1793
1794 static int btusb_resume(struct usb_interface *intf)
1795 {
1796         struct btusb_data *data = usb_get_intfdata(intf);
1797         struct hci_dev *hdev = data->hdev;
1798         int err = 0;
1799
1800         BT_DBG("intf %p", intf);
1801
1802         if (--data->suspend_count)
1803                 return 0;
1804
1805         if (!test_bit(HCI_RUNNING, &hdev->flags))
1806                 goto done;
1807
1808         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1809                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1810                 if (err < 0) {
1811                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1812                         goto failed;
1813                 }
1814         }
1815
1816         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1817                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1818                 if (err < 0) {
1819                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1820                         goto failed;
1821                 }
1822
1823                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1824         }
1825
1826         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1827                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1828                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1829                 else
1830                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1831         }
1832
1833         spin_lock_irq(&data->txlock);
1834         play_deferred(data);
1835         clear_bit(BTUSB_SUSPENDING, &data->flags);
1836         spin_unlock_irq(&data->txlock);
1837         schedule_work(&data->work);
1838
1839         return 0;
1840
1841 failed:
1842         usb_scuttle_anchored_urbs(&data->deferred);
1843 done:
1844         spin_lock_irq(&data->txlock);
1845         clear_bit(BTUSB_SUSPENDING, &data->flags);
1846         spin_unlock_irq(&data->txlock);
1847
1848         return err;
1849 }
1850 #endif
1851
1852 static struct usb_driver btusb_driver = {
1853         .name           = "btusb",
1854         .probe          = btusb_probe,
1855         .disconnect     = btusb_disconnect,
1856 #ifdef CONFIG_PM
1857         .suspend        = btusb_suspend,
1858         .resume         = btusb_resume,
1859 #endif
1860         .id_table       = btusb_table,
1861         .supports_autosuspend = 1,
1862         .disable_hub_initiated_lpm = 1,
1863 };
1864
1865 module_usb_driver(btusb_driver);
1866
1867 module_param(ignore_dga, bool, 0644);
1868 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1869
1870 module_param(ignore_csr, bool, 0644);
1871 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1872
1873 module_param(ignore_sniffer, bool, 0644);
1874 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1875
1876 module_param(disable_scofix, bool, 0644);
1877 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1878
1879 module_param(force_scofix, bool, 0644);
1880 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1881
1882 module_param(reset, bool, 0644);
1883 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1884
1885 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1886 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1887 MODULE_VERSION(VERSION);
1888 MODULE_LICENSE("GPL");