drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/kernel.h>
  25 #include <linux/module.h>
  26 #include <linux/init.h>
  27 #include <linux/slab.h>
  28 #include <linux/types.h>
  29 #include <linux/sched.h>
  30 #include <linux/errno.h>
  31 #include <linux/skbuff.h>
  32
  33 #include <linux/usb.h>
  34
  35 #include <net/bluetooth/bluetooth.h>
  36 #include <net/bluetooth/hci_core.h>
  37
  38 #define VERSION "0.6"
  39
  40 static int ignore_dga;
  41 static int ignore_csr;
  42 static int ignore_sniffer;
  43 static int disable_scofix;
  44 static int force_scofix;
  45
  46 static int reset = 1;
  47
  48 static struct usb_driver btusb_driver;
  49
  50 #define BTUSB_IGNORE            0x01
  51 #define BTUSB_DIGIANSWER        0x02
  52 #define BTUSB_CSR               0x04
  53 #define BTUSB_SNIFFER           0x08
  54 #define BTUSB_BCM92035          0x10
  55 #define BTUSB_BROKEN_ISOC       0x20
  56 #define BTUSB_WRONG_SCO_MTU     0x40
  57 #define BTUSB_ATH3012           0x80
  58 #define BTUSB_INTEL_BOOT        0x200
  59
  60 static struct usb_device_id btusb_table[] = {
  61         /* Generic Bluetooth USB device */
  62         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  63
  64         /* Apple-specific (Broadcom) devices */
  65         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  66
  67         /* MediaTek MT76x0E */
  68         { USB_DEVICE(0x0e8d, 0x763f) },
  69
  70         /* Broadcom SoftSailing reporting vendor specific */
  71         { USB_DEVICE(0x0a5c, 0x21e1) },
  72
  73         /* Apple MacBookPro 7,1 */
  74         { USB_DEVICE(0x05ac, 0x8213) },
  75
  76         /* Apple iMac11,1 */
  77         { USB_DEVICE(0x05ac, 0x8215) },
  78
  79         /* Apple MacBookPro6,2 */
  80         { USB_DEVICE(0x05ac, 0x8218) },
  81
  82         /* Apple MacBookAir3,1, MacBookAir3,2 */
  83         { USB_DEVICE(0x05ac, 0x821b) },
  84
  85         /* Apple MacBookAir4,1 */
  86         { USB_DEVICE(0x05ac, 0x821f) },
  87
  88         /* Apple MacBookPro8,2 */
  89         { USB_DEVICE(0x05ac, 0x821a) },
  90
  91         /* Apple MacMini5,1 */
  92         { USB_DEVICE(0x05ac, 0x8281) },
  93
  94         /* AVM BlueFRITZ! USB v2.0 */
  95         { USB_DEVICE(0x057c, 0x3800) },
  96
  97         /* Bluetooth Ultraport Module from IBM */
  98         { USB_DEVICE(0x04bf, 0x030a) },
  99
 100         /* ALPS Modules with non-standard id */
 101         { USB_DEVICE(0x044e, 0x3001) },
 102         { USB_DEVICE(0x044e, 0x3002) },
 103
 104         /* Ericsson with non-standard id */
 105         { USB_DEVICE(0x0bdb, 0x1002) },
 106
 107         /* Canyon CN-BTU1 with HID interfaces */
 108         { USB_DEVICE(0x0c10, 0x0000) },
 109
 110         /* Broadcom BCM20702A0 */
 111         { USB_DEVICE(0x0489, 0xe042) },
 112         { USB_DEVICE(0x04ca, 0x2003) },
 113         { USB_DEVICE(0x0b05, 0x17b5) },
 114         { USB_DEVICE(0x0b05, 0x17cb) },
 115         { USB_DEVICE(0x413c, 0x8197) },
 116
 117         /* Foxconn - Hon Hai */
 118         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 119
 120         /* Broadcom devices with vendor specific id */
 121         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 122
 123         /* ASUSTek Computer - Broadcom based */
 124         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
 125
 126         /* Belkin F8065bf - Broadcom based */
 127         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 128
 129         /* IMC Networks - Broadcom based */
 130         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 131
 132         /* Intel Bluetooth USB Bootloader (RAM module) */
 133         { USB_DEVICE(0x8087, 0x0a5a),
 134           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 135
 136         { }     /* Terminating entry */
 137 };
 138
 139 MODULE_DEVICE_TABLE(usb, btusb_table);
 140
 141 static struct usb_device_id blacklist_table[] = {
 142         /* CSR BlueCore devices */
 143         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 144
 145         /* Broadcom BCM2033 without firmware */
 146         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 147
 148         /* Atheros 3011 with sflash firmware */
 149         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 150         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 151         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 152         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 153         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 154         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 155         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 156
 157         /* Atheros AR9285 Malbec with sflash firmware */
 158         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 159
 160         /* Atheros 3012 with sflash firmware */
 161         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 207
 208         /* Atheros AR5BBU12 with sflash firmware */
 209         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 210
 211         /* Atheros AR5BBU12 with sflash firmware */
 212         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 214
 215         /* Broadcom BCM2035 */
 216         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 217         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 218         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 219
 220         /* Broadcom BCM2045 */
 221         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 222         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 223
 224         /* IBM/Lenovo ThinkPad with Broadcom chip */
 225         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 226         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 227
 228         /* HP laptop with Broadcom chip */
 229         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 230
 231         /* Dell laptop with Broadcom chip */
 232         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 233
 234         /* Dell Wireless 370 and 410 devices */
 235         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 236         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 237
 238         /* Belkin F8T012 and F8T013 devices */
 239         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 240         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 241
 242         /* Asus WL-BTD202 device */
 243         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 244
 245         /* Kensington Bluetooth USB adapter */
 246         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 247
 248         /* RTX Telecom based adapters with buggy SCO support */
 249         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 250         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 251
 252         /* CONWISE Technology based adapters with buggy SCO support */
 253         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 254
 255         /* Digianswer devices */
 256         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 257         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 258
 259         /* CSR BlueCore Bluetooth Sniffer */
 260         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 261
 262         /* Frontline ComProbe Bluetooth Sniffer */
 263         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 264
 265         { }     /* Terminating entry */
 266 };
 267
 268 #define BTUSB_MAX_ISOC_FRAMES   10
 269
 270 #define BTUSB_INTR_RUNNING      0
 271 #define BTUSB_BULK_RUNNING      1
 272 #define BTUSB_ISOC_RUNNING      2
 273 #define BTUSB_SUSPENDING        3
 274 #define BTUSB_DID_ISO_RESUME    4
 275
 276 struct btusb_data {
 277         struct hci_dev       *hdev;
 278         struct usb_device    *udev;
 279         struct usb_interface *intf;
 280         struct usb_interface *isoc;
 281
 282         spinlock_t lock;
 283
 284         unsigned long flags;
 285
 286         struct work_struct work;
 287         struct work_struct waker;
 288
 289         struct usb_anchor tx_anchor;
 290         struct usb_anchor intr_anchor;
 291         struct usb_anchor bulk_anchor;
 292         struct usb_anchor isoc_anchor;
 293         struct usb_anchor deferred;
 294         int tx_in_flight;
 295         spinlock_t txlock;
 296
 297         struct usb_endpoint_descriptor *intr_ep;
 298         struct usb_endpoint_descriptor *bulk_tx_ep;
 299         struct usb_endpoint_descriptor *bulk_rx_ep;
 300         struct usb_endpoint_descriptor *isoc_tx_ep;
 301         struct usb_endpoint_descriptor *isoc_rx_ep;
 302
 303         __u8 cmdreq_type;
 304
 305         unsigned int sco_num;
 306         int isoc_altsetting;
 307         int suspend_count;
 308 };
 309
 310 static int inc_tx(struct btusb_data *data)
 311 {
 312         unsigned long flags;
 313         int rv;
 314
 315         spin_lock_irqsave(&data->txlock, flags);
 316         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 317         if (!rv)
 318                 data->tx_in_flight++;
 319         spin_unlock_irqrestore(&data->txlock, flags);
 320
 321         return rv;
 322 }
 323
 324 static void btusb_intr_complete(struct urb *urb)
 325 {
 326         struct hci_dev *hdev = urb->context;
 327         struct btusb_data *data = hdev->driver_data;
 328         int err;
 329
 330         BT_DBG("%s urb %p status %d count %d", hdev->name,
 331                                         urb, urb->status, urb->actual_length);
 332
 333         if (!test_bit(HCI_RUNNING, &hdev->flags))
 334                 return;
 335
 336         if (urb->status == 0) {
 337                 hdev->stat.byte_rx += urb->actual_length;
 338
 339                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 340                                                 urb->transfer_buffer,
 341                                                 urb->actual_length) < 0) {
 342                         BT_ERR("%s corrupted event packet", hdev->name);
 343                         hdev->stat.err_rx++;
 344                 }
 345         } else if (urb->status == -ENOENT) {
 346                 /* Avoid suspend failed when usb_kill_urb */
 347                 return;
 348         }
 349
 350         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 351                 return;
 352
 353         usb_mark_last_busy(data->udev);
 354         usb_anchor_urb(urb, &data->intr_anchor);
 355
 356         err = usb_submit_urb(urb, GFP_ATOMIC);
 357         if (err < 0) {
 358                 /* -EPERM: urb is being killed;
 359                  * -ENODEV: device got disconnected */
 360                 if (err != -EPERM && err != -ENODEV)
 361                         BT_ERR("%s urb %p failed to resubmit (%d)",
 362                                                 hdev->name, urb, -err);
 363                 usb_unanchor_urb(urb);
 364         }
 365 }
 366
 367 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 368 {
 369         struct btusb_data *data = hdev->driver_data;
 370         struct urb *urb;
 371         unsigned char *buf;
 372         unsigned int pipe;
 373         int err, size;
 374
 375         BT_DBG("%s", hdev->name);
 376
 377         if (!data->intr_ep)
 378                 return -ENODEV;
 379
 380         urb = usb_alloc_urb(0, mem_flags);
 381         if (!urb)
 382                 return -ENOMEM;
 383
 384         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 385
 386         buf = kmalloc(size, mem_flags);
 387         if (!buf) {
 388                 usb_free_urb(urb);
 389                 return -ENOMEM;
 390         }
 391
 392         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 393
 394         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 395                                                 btusb_intr_complete, hdev,
 396                                                 data->intr_ep->bInterval);
 397
 398         urb->transfer_flags |= URB_FREE_BUFFER;
 399
 400         usb_anchor_urb(urb, &data->intr_anchor);
 401
 402         err = usb_submit_urb(urb, mem_flags);
 403         if (err < 0) {
 404                 BT_ERR("%s urb %p submission failed (%d)",
 405                                                 hdev->name, urb, -err);
 406                 usb_unanchor_urb(urb);
 407         }
 408
 409         usb_free_urb(urb);
 410
 411         return err;
 412 }
 413
 414 static void btusb_bulk_complete(struct urb *urb)
 415 {
 416         struct hci_dev *hdev = urb->context;
 417         struct btusb_data *data = hdev->driver_data;
 418         int err;
 419
 420         BT_DBG("%s urb %p status %d count %d", hdev->name,
 421                                         urb, urb->status, urb->actual_length);
 422
 423         if (!test_bit(HCI_RUNNING, &hdev->flags))
 424                 return;
 425
 426         if (urb->status == 0) {
 427                 hdev->stat.byte_rx += urb->actual_length;
 428
 429                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 430                                                 urb->transfer_buffer,
 431                                                 urb->actual_length) < 0) {
 432                         BT_ERR("%s corrupted ACL packet", hdev->name);
 433                         hdev->stat.err_rx++;
 434                 }
 435         } else if (urb->status == -ENOENT) {
 436                 /* Avoid suspend failed when usb_kill_urb */
 437                 return;
 438         }
 439
 440         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 441                 return;
 442
 443         usb_anchor_urb(urb, &data->bulk_anchor);
 444         usb_mark_last_busy(data->udev);
 445
 446         err = usb_submit_urb(urb, GFP_ATOMIC);
 447         if (err < 0) {
 448                 /* -EPERM: urb is being killed;
 449                  * -ENODEV: device got disconnected */
 450                 if (err != -EPERM && err != -ENODEV)
 451                         BT_ERR("%s urb %p failed to resubmit (%d)",
 452                                                 hdev->name, urb, -err);
 453                 usb_unanchor_urb(urb);
 454         }
 455 }
 456
 457 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 458 {
 459         struct btusb_data *data = hdev->driver_data;
 460         struct urb *urb;
 461         unsigned char *buf;
 462         unsigned int pipe;
 463         int err, size = HCI_MAX_FRAME_SIZE;
 464
 465         BT_DBG("%s", hdev->name);
 466
 467         if (!data->bulk_rx_ep)
 468                 return -ENODEV;
 469
 470         urb = usb_alloc_urb(0, mem_flags);
 471         if (!urb)
 472                 return -ENOMEM;
 473
 474         buf = kmalloc(size, mem_flags);
 475         if (!buf) {
 476                 usb_free_urb(urb);
 477                 return -ENOMEM;
 478         }
 479
 480         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 481
 482         usb_fill_bulk_urb(urb, data->udev, pipe,
 483                                         buf, size, btusb_bulk_complete, hdev);
 484
 485         urb->transfer_flags |= URB_FREE_BUFFER;
 486
 487         usb_mark_last_busy(data->udev);
 488         usb_anchor_urb(urb, &data->bulk_anchor);
 489
 490         err = usb_submit_urb(urb, mem_flags);
 491         if (err < 0) {
 492                 BT_ERR("%s urb %p submission failed (%d)",
 493                                                 hdev->name, urb, -err);
 494                 usb_unanchor_urb(urb);
 495         }
 496
 497         usb_free_urb(urb);
 498
 499         return err;
 500 }
 501
 502 static void btusb_isoc_complete(struct urb *urb)
 503 {
 504         struct hci_dev *hdev = urb->context;
 505         struct btusb_data *data = hdev->driver_data;
 506         int i, err;
 507
 508         BT_DBG("%s urb %p status %d count %d", hdev->name,
 509                                         urb, urb->status, urb->actual_length);
 510
 511         if (!test_bit(HCI_RUNNING, &hdev->flags))
 512                 return;
 513
 514         if (urb->status == 0) {
 515                 for (i = 0; i < urb->number_of_packets; i++) {
 516                         unsigned int offset = urb->iso_frame_desc[i].offset;
 517                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 518
 519                         if (urb->iso_frame_desc[i].status)
 520                                 continue;
 521
 522                         hdev->stat.byte_rx += length;
 523
 524                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 525                                                 urb->transfer_buffer + offset,
 526                                                                 length) < 0) {
 527                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 528                                 hdev->stat.err_rx++;
 529                         }
 530                 }
 531         } else if (urb->status == -ENOENT) {
 532                 /* Avoid suspend failed when usb_kill_urb */
 533                 return;
 534         }
 535
 536         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 537                 return;
 538
 539         usb_anchor_urb(urb, &data->isoc_anchor);
 540
 541         err = usb_submit_urb(urb, GFP_ATOMIC);
 542         if (err < 0) {
 543                 /* -EPERM: urb is being killed;
 544                  * -ENODEV: device got disconnected */
 545                 if (err != -EPERM && err != -ENODEV)
 546                         BT_ERR("%s urb %p failed to resubmit (%d)",
 547                                                 hdev->name, urb, -err);
 548                 usb_unanchor_urb(urb);
 549         }
 550 }
 551
 552 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 553 {
 554         int i, offset = 0;
 555
 556         BT_DBG("len %d mtu %d", len, mtu);
 557
 558         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 559                                         i++, offset += mtu, len -= mtu) {
 560                 urb->iso_frame_desc[i].offset = offset;
 561                 urb->iso_frame_desc[i].length = mtu;
 562         }
 563
 564         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 565                 urb->iso_frame_desc[i].offset = offset;
 566                 urb->iso_frame_desc[i].length = len;
 567                 i++;
 568         }
 569
 570         urb->number_of_packets = i;
 571 }
 572
 573 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 574 {
 575         struct btusb_data *data = hdev->driver_data;
 576         struct urb *urb;
 577         unsigned char *buf;
 578         unsigned int pipe;
 579         int err, size;
 580
 581         BT_DBG("%s", hdev->name);
 582
 583         if (!data->isoc_rx_ep)
 584                 return -ENODEV;
 585
 586         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 587         if (!urb)
 588                 return -ENOMEM;
 589
 590         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 591                                                 BTUSB_MAX_ISOC_FRAMES;
 592
 593         buf = kmalloc(size, mem_flags);
 594         if (!buf) {
 595                 usb_free_urb(urb);
 596                 return -ENOMEM;
 597         }
 598
 599         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 600
 601         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 602                                 hdev, data->isoc_rx_ep->bInterval);
 603
 604         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 605
 606         __fill_isoc_descriptor(urb, size,
 607                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 608
 609         usb_anchor_urb(urb, &data->isoc_anchor);
 610
 611         err = usb_submit_urb(urb, mem_flags);
 612         if (err < 0) {
 613                 BT_ERR("%s urb %p submission failed (%d)",
 614                                                 hdev->name, urb, -err);
 615                 usb_unanchor_urb(urb);
 616         }
 617
 618         usb_free_urb(urb);
 619
 620         return err;
 621 }
 622
 623 static void btusb_tx_complete(struct urb *urb)
 624 {
 625         struct sk_buff *skb = urb->context;
 626         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 627         struct btusb_data *data = hdev->driver_data;
 628
 629         BT_DBG("%s urb %p status %d count %d", hdev->name,
 630                                         urb, urb->status, urb->actual_length);
 631
 632         if (!test_bit(HCI_RUNNING, &hdev->flags))
 633                 goto done;
 634
 635         if (!urb->status)
 636                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 637         else
 638                 hdev->stat.err_tx++;
 639
 640 done:
 641         spin_lock(&data->txlock);
 642         data->tx_in_flight--;
 643         spin_unlock(&data->txlock);
 644
 645         kfree(urb->setup_packet);
 646
 647         kfree_skb(skb);
 648 }
 649
 650 static void btusb_isoc_tx_complete(struct urb *urb)
 651 {
 652         struct sk_buff *skb = urb->context;
 653         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 654
 655         BT_DBG("%s urb %p status %d count %d", hdev->name,
 656                                         urb, urb->status, urb->actual_length);
 657
 658         if (!test_bit(HCI_RUNNING, &hdev->flags))
 659                 goto done;
 660
 661         if (!urb->status)
 662                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 663         else
 664                 hdev->stat.err_tx++;
 665
 666 done:
 667         kfree(urb->setup_packet);
 668
 669         kfree_skb(skb);
 670 }
 671
 672 static int btusb_open(struct hci_dev *hdev)
 673 {
 674         struct btusb_data *data = hdev->driver_data;
 675         int err;
 676
 677         BT_DBG("%s", hdev->name);
 678
 679         err = usb_autopm_get_interface(data->intf);
 680         if (err < 0)
 681                 return err;
 682
 683         data->intf->needs_remote_wakeup = 1;
 684
 685         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 686                 goto done;
 687
 688         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 689                 goto done;
 690
 691         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 692         if (err < 0)
 693                 goto failed;
 694
 695         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 696         if (err < 0) {
 697                 usb_kill_anchored_urbs(&data->intr_anchor);
 698                 goto failed;
 699         }
 700
 701         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 702         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 703
 704 done:
 705         usb_autopm_put_interface(data->intf);
 706         return 0;
 707
 708 failed:
 709         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 710         clear_bit(HCI_RUNNING, &hdev->flags);
 711         usb_autopm_put_interface(data->intf);
 712         return err;
 713 }
 714
 715 static void btusb_stop_traffic(struct btusb_data *data)
 716 {
 717         usb_kill_anchored_urbs(&data->intr_anchor);
 718         usb_kill_anchored_urbs(&data->bulk_anchor);
 719         usb_kill_anchored_urbs(&data->isoc_anchor);
 720 }
 721
 722 static int btusb_close(struct hci_dev *hdev)
 723 {
 724         struct btusb_data *data = hdev->driver_data;
 725         int err;
 726
 727         BT_DBG("%s", hdev->name);
 728
 729         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 730                 return 0;
 731
 732         cancel_work_sync(&data->work);
 733         cancel_work_sync(&data->waker);
 734
 735         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 736         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 737         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 738
 739         btusb_stop_traffic(data);
 740         err = usb_autopm_get_interface(data->intf);
 741         if (err < 0)
 742                 goto failed;
 743
 744         data->intf->needs_remote_wakeup = 0;
 745         usb_autopm_put_interface(data->intf);
 746
 747 failed:
 748         usb_scuttle_anchored_urbs(&data->deferred);
 749         return 0;
 750 }
 751
 752 static int btusb_flush(struct hci_dev *hdev)
 753 {
 754         struct btusb_data *data = hdev->driver_data;
 755
 756         BT_DBG("%s", hdev->name);
 757
 758         usb_kill_anchored_urbs(&data->tx_anchor);
 759
 760         return 0;
 761 }
 762
 763 static int btusb_send_frame(struct sk_buff *skb)
 764 {
 765         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 766         struct btusb_data *data = hdev->driver_data;
 767         struct usb_ctrlrequest *dr;
 768         struct urb *urb;
 769         unsigned int pipe;
 770         int err;
 771
 772         BT_DBG("%s", hdev->name);
 773
 774         if (!test_bit(HCI_RUNNING, &hdev->flags))
 775                 return -EBUSY;
 776
 777         switch (bt_cb(skb)->pkt_type) {
 778         case HCI_COMMAND_PKT:
 779                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 780                 if (!urb)
 781                         return -ENOMEM;
 782
 783                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 784                 if (!dr) {
 785                         usb_free_urb(urb);
 786                         return -ENOMEM;
 787                 }
 788
 789                 dr->bRequestType = data->cmdreq_type;
 790                 dr->bRequest     = 0;
 791                 dr->wIndex       = 0;
 792                 dr->wValue       = 0;
 793                 dr->wLength      = __cpu_to_le16(skb->len);
 794
 795                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 796
 797                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 798                                 skb->data, skb->len, btusb_tx_complete, skb);
 799
 800                 hdev->stat.cmd_tx++;
 801                 break;
 802
 803         case HCI_ACLDATA_PKT:
 804                 if (!data->bulk_tx_ep)
 805                         return -ENODEV;
 806
 807                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 808                 if (!urb)
 809                         return -ENOMEM;
 810
 811                 pipe = usb_sndbulkpipe(data->udev,
 812                                         data->bulk_tx_ep->bEndpointAddress);
 813
 814                 usb_fill_bulk_urb(urb, data->udev, pipe,
 815                                 skb->data, skb->len, btusb_tx_complete, skb);
 816
 817                 hdev->stat.acl_tx++;
 818                 break;
 819
 820         case HCI_SCODATA_PKT:
 821                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 822                         return -ENODEV;
 823
 824                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 825                 if (!urb)
 826                         return -ENOMEM;
 827
 828                 pipe = usb_sndisocpipe(data->udev,
 829                                         data->isoc_tx_ep->bEndpointAddress);
 830
 831                 usb_fill_int_urb(urb, data->udev, pipe,
 832                                 skb->data, skb->len, btusb_isoc_tx_complete,
 833                                 skb, data->isoc_tx_ep->bInterval);
 834
 835                 urb->transfer_flags  = URB_ISO_ASAP;
 836
 837                 __fill_isoc_descriptor(urb, skb->len,
 838                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 839
 840                 hdev->stat.sco_tx++;
 841                 goto skip_waking;
 842
 843         default:
 844                 return -EILSEQ;
 845         }
 846
 847         err = inc_tx(data);
 848         if (err) {
 849                 usb_anchor_urb(urb, &data->deferred);
 850                 schedule_work(&data->waker);
 851                 err = 0;
 852                 goto done;
 853         }
 854
 855 skip_waking:
 856         usb_anchor_urb(urb, &data->tx_anchor);
 857
 858         err = usb_submit_urb(urb, GFP_ATOMIC);
 859         if (err < 0) {
 860                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 861                 kfree(urb->setup_packet);
 862                 usb_unanchor_urb(urb);
 863         } else {
 864                 usb_mark_last_busy(data->udev);
 865         }
 866
 867 done:
 868         usb_free_urb(urb);
 869         return err;
 870 }
 871
 872 static void btusb_destruct(struct hci_dev *hdev)
 873 {
 874         struct btusb_data *data = hdev->driver_data;
 875
 876         BT_DBG("%s", hdev->name);
 877
 878         kfree(data);
 879 }
 880
 881 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 882 {
 883         struct btusb_data *data = hdev->driver_data;
 884
 885         BT_DBG("%s evt %d", hdev->name, evt);
 886
 887         if (hdev->conn_hash.sco_num != data->sco_num) {
 888                 data->sco_num = hdev->conn_hash.sco_num;
 889                 schedule_work(&data->work);
 890         }
 891 }
 892
 893 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 894 {
 895         struct btusb_data *data = hdev->driver_data;
 896         struct usb_interface *intf = data->isoc;
 897         struct usb_endpoint_descriptor *ep_desc;
 898         int i, err;
 899
 900         if (!data->isoc)
 901                 return -ENODEV;
 902
 903         err = usb_set_interface(data->udev, 1, altsetting);
 904         if (err < 0) {
 905                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 906                 return err;
 907         }
 908
 909         data->isoc_altsetting = altsetting;
 910
 911         data->isoc_tx_ep = NULL;
 912         data->isoc_rx_ep = NULL;
 913
 914         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 915                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 916
 917                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 918                         data->isoc_tx_ep = ep_desc;
 919                         continue;
 920                 }
 921
 922                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 923                         data->isoc_rx_ep = ep_desc;
 924                         continue;
 925                 }
 926         }
 927
 928         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 929                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 930                 return -ENODEV;
 931         }
 932
 933         return 0;
 934 }
 935
 936 static void btusb_work(struct work_struct *work)
 937 {
 938         struct btusb_data *data = container_of(work, struct btusb_data, work);
 939         struct hci_dev *hdev = data->hdev;
 940         int err;
 941
 942         if (hdev->conn_hash.sco_num > 0) {
 943                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 944                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 945                         if (err < 0) {
 946                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 947                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 948                                 return;
 949                         }
 950
 951                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 952                 }
 953                 if (data->isoc_altsetting != 2) {
 954                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 955                         usb_kill_anchored_urbs(&data->isoc_anchor);
 956
 957                         if (__set_isoc_interface(hdev, 2) < 0)
 958                                 return;
 959                 }
 960
 961                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 962                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 963                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 964                         else
 965                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 966                 }
 967         } else {
 968                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 969                 usb_kill_anchored_urbs(&data->isoc_anchor);
 970
 971                 __set_isoc_interface(hdev, 0);
 972                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 973                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 974         }
 975 }
 976
 977 static void btusb_waker(struct work_struct *work)
 978 {
 979         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 980         int err;
 981
 982         err = usb_autopm_get_interface(data->intf);
 983         if (err < 0)
 984                 return;
 985
 986         usb_autopm_put_interface(data->intf);
 987 }
 988
 989 static int btusb_probe(struct usb_interface *intf,
 990                                 const struct usb_device_id *id)
 991 {
 992         struct usb_endpoint_descriptor *ep_desc;
 993         struct btusb_data *data;
 994         struct hci_dev *hdev;
 995         int i, err;
 996
 997         BT_DBG("intf %p id %p", intf, id);
 998
 999         /* interface numbers are hardcoded in the spec */
1000         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1001                 return -ENODEV;
1002
1003         if (!id->driver_info) {
1004                 const struct usb_device_id *match;
1005                 match = usb_match_id(intf, blacklist_table);
1006                 if (match)
1007                         id = match;
1008         }
1009
1010         if (id->driver_info == BTUSB_IGNORE)
1011                 return -ENODEV;
1012
1013         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1014                 return -ENODEV;
1015
1016         if (ignore_csr && id->driver_info & BTUSB_CSR)
1017                 return -ENODEV;
1018
1019         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1020                 return -ENODEV;
1021
1022         if (id->driver_info & BTUSB_ATH3012) {
1023                 struct usb_device *udev = interface_to_usbdev(intf);
1024
1025                 /* Old firmware would otherwise let ath3k driver load
1026                  * patch and sysconfig files */
1027                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1028                         return -ENODEV;
1029         }
1030
1031         data = kzalloc(sizeof(*data), GFP_KERNEL);
1032         if (!data)
1033                 return -ENOMEM;
1034
1035         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1036                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1037
1038                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1039                         data->intr_ep = ep_desc;
1040                         continue;
1041                 }
1042
1043                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1044                         data->bulk_tx_ep = ep_desc;
1045                         continue;
1046                 }
1047
1048                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1049                         data->bulk_rx_ep = ep_desc;
1050                         continue;
1051                 }
1052         }
1053
1054         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1055                 kfree(data);
1056                 return -ENODEV;
1057         }
1058
1059         data->cmdreq_type = USB_TYPE_CLASS;
1060
1061         data->udev = interface_to_usbdev(intf);
1062         data->intf = intf;
1063
1064         spin_lock_init(&data->lock);
1065
1066         INIT_WORK(&data->work, btusb_work);
1067         INIT_WORK(&data->waker, btusb_waker);
1068         spin_lock_init(&data->txlock);
1069
1070         init_usb_anchor(&data->tx_anchor);
1071         init_usb_anchor(&data->intr_anchor);
1072         init_usb_anchor(&data->bulk_anchor);
1073         init_usb_anchor(&data->isoc_anchor);
1074         init_usb_anchor(&data->deferred);
1075
1076         hdev = hci_alloc_dev();
1077         if (!hdev) {
1078                 kfree(data);
1079                 return -ENOMEM;
1080         }
1081
1082         hdev->bus = HCI_USB;
1083         hdev->driver_data = data;
1084
1085         data->hdev = hdev;
1086
1087         SET_HCIDEV_DEV(hdev, &intf->dev);
1088
1089         hdev->open     = btusb_open;
1090         hdev->close    = btusb_close;
1091         hdev->flush    = btusb_flush;
1092         hdev->send     = btusb_send_frame;
1093         hdev->destruct = btusb_destruct;
1094         hdev->notify   = btusb_notify;
1095
1096         hdev->owner = THIS_MODULE;
1097
1098         if (id->driver_info & BTUSB_INTEL_BOOT)
1099                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1100
1101         /* Interface numbers are hardcoded in the specification */
1102         data->isoc = usb_ifnum_to_if(data->udev, 1);
1103
1104         if (!reset)
1105                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1106
1107         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1108                 if (!disable_scofix)
1109                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1110         }
1111
1112         if (id->driver_info & BTUSB_BROKEN_ISOC)
1113                 data->isoc = NULL;
1114
1115         if (id->driver_info & BTUSB_DIGIANSWER) {
1116                 data->cmdreq_type = USB_TYPE_VENDOR;
1117                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1118         }
1119
1120         if (id->driver_info & BTUSB_CSR) {
1121                 struct usb_device *udev = data->udev;
1122
1123                 /* Old firmware would otherwise execute USB reset */
1124                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1125                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1126         }
1127
1128         if (id->driver_info & BTUSB_SNIFFER) {
1129                 struct usb_device *udev = data->udev;
1130
1131                 /* New sniffer firmware has crippled HCI interface */
1132                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1133                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1134
1135                 data->isoc = NULL;
1136         }
1137
1138         if (id->driver_info & BTUSB_BCM92035) {
1139                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1140                 struct sk_buff *skb;
1141
1142                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1143                 if (skb) {
1144                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1145                         skb_queue_tail(&hdev->driver_init, skb);
1146                 }
1147         }
1148
1149         if (data->isoc) {
1150                 err = usb_driver_claim_interface(&btusb_driver,
1151                                                         data->isoc, data);
1152                 if (err < 0) {
1153                         hci_free_dev(hdev);
1154                         kfree(data);
1155                         return err;
1156                 }
1157         }
1158
1159         err = hci_register_dev(hdev);
1160         if (err < 0) {
1161                 hci_free_dev(hdev);
1162                 kfree(data);
1163                 return err;
1164         }
1165
1166         usb_set_intfdata(intf, data);
1167
1168         return 0;
1169 }
1170
1171 static void btusb_disconnect(struct usb_interface *intf)
1172 {
1173         struct btusb_data *data = usb_get_intfdata(intf);
1174         struct hci_dev *hdev;
1175
1176         BT_DBG("intf %p", intf);
1177
1178         if (!data)
1179                 return;
1180
1181         hdev = data->hdev;
1182
1183         __hci_dev_hold(hdev);
1184
1185         usb_set_intfdata(data->intf, NULL);
1186
1187         if (data->isoc)
1188                 usb_set_intfdata(data->isoc, NULL);
1189
1190         hci_unregister_dev(hdev);
1191
1192         if (intf == data->isoc)
1193                 usb_driver_release_interface(&btusb_driver, data->intf);
1194         else if (data->isoc)
1195                 usb_driver_release_interface(&btusb_driver, data->isoc);
1196
1197         __hci_dev_put(hdev);
1198
1199         hci_free_dev(hdev);
1200 }
1201
1202 #ifdef CONFIG_PM
1203 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1204 {
1205         struct btusb_data *data = usb_get_intfdata(intf);
1206
1207         BT_DBG("intf %p", intf);
1208
1209         if (data->suspend_count++)
1210                 return 0;
1211
1212         spin_lock_irq(&data->txlock);
1213         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1214                 set_bit(BTUSB_SUSPENDING, &data->flags);
1215                 spin_unlock_irq(&data->txlock);
1216         } else {
1217                 spin_unlock_irq(&data->txlock);
1218                 data->suspend_count--;
1219                 return -EBUSY;
1220         }
1221
1222         cancel_work_sync(&data->work);
1223
1224         btusb_stop_traffic(data);
1225         usb_kill_anchored_urbs(&data->tx_anchor);
1226
1227         return 0;
1228 }
1229
1230 static void play_deferred(struct btusb_data *data)
1231 {
1232         struct urb *urb;
1233         int err;
1234
1235         while ((urb = usb_get_from_anchor(&data->deferred))) {
1236                 err = usb_submit_urb(urb, GFP_ATOMIC);
1237                 if (err < 0)
1238                         break;
1239
1240                 data->tx_in_flight++;
1241         }
1242         usb_scuttle_anchored_urbs(&data->deferred);
1243 }
1244
1245 static int btusb_resume(struct usb_interface *intf)
1246 {
1247         struct btusb_data *data = usb_get_intfdata(intf);
1248         struct hci_dev *hdev = data->hdev;
1249         int err = 0;
1250
1251         BT_DBG("intf %p", intf);
1252
1253         if (--data->suspend_count)
1254                 return 0;
1255
1256         if (!test_bit(HCI_RUNNING, &hdev->flags))
1257                 goto done;
1258
1259         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1260                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1261                 if (err < 0) {
1262                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1263                         goto failed;
1264                 }
1265         }
1266
1267         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1268                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1269                 if (err < 0) {
1270                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1271                         goto failed;
1272                 }
1273
1274                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1275         }
1276
1277         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1278                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1279                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1280                 else
1281                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1282         }
1283
1284         spin_lock_irq(&data->txlock);
1285         play_deferred(data);
1286         clear_bit(BTUSB_SUSPENDING, &data->flags);
1287         spin_unlock_irq(&data->txlock);
1288         schedule_work(&data->work);
1289
1290         return 0;
1291
1292 failed:
1293         usb_scuttle_anchored_urbs(&data->deferred);
1294 done:
1295         spin_lock_irq(&data->txlock);
1296         clear_bit(BTUSB_SUSPENDING, &data->flags);
1297         spin_unlock_irq(&data->txlock);
1298
1299         return err;
1300 }
1301 #endif
1302
1303 static struct usb_driver btusb_driver = {
1304         .name           = "btusb",
1305         .probe          = btusb_probe,
1306         .disconnect     = btusb_disconnect,
1307 #ifdef CONFIG_PM
1308         .suspend        = btusb_suspend,
1309         .resume         = btusb_resume,
1310 #endif
1311         .id_table       = btusb_table,
1312         .supports_autosuspend = 1,
1313 };
1314
1315 static int __init btusb_init(void)
1316 {
1317         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1318
1319         return usb_register(&btusb_driver);
1320 }
1321
1322 static void __exit btusb_exit(void)
1323 {
1324         usb_deregister(&btusb_driver);
1325 }
1326
1327 module_init(btusb_init);
1328 module_exit(btusb_exit);
1329
1330 module_param(ignore_dga, bool, 0644);
1331 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1332
1333 module_param(ignore_csr, bool, 0644);
1334 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1335
1336 module_param(ignore_sniffer, bool, 0644);
1337 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1338
1339 module_param(disable_scofix, bool, 0644);
1340 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1341
1342 module_param(force_scofix, bool, 0644);
1343 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1344
1345 module_param(reset, bool, 0644);
1346 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1347
1348 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1349 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1350 MODULE_VERSION(VERSION);
1351 MODULE_LICENSE("GPL");