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