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