drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/kernel.h>
  25 #include <linux/module.h>
  26 #include <linux/init.h>
  27 #include <linux/slab.h>
  28 #include <linux/types.h>
  29 #include <linux/sched.h>
  30 #include <linux/errno.h>
  31 #include <linux/skbuff.h>
  32
  33 #include <linux/usb.h>
  34
  35 #include <net/bluetooth/bluetooth.h>
  36 #include <net/bluetooth/hci_core.h>
  37
  38 #define VERSION "0.6"
  39
  40 static int ignore_dga;
  41 static int ignore_csr;
  42 static int ignore_sniffer;
  43 static int disable_scofix;
  44 static int force_scofix;
  45
  46 static int reset = 1;
  47
  48 static struct usb_driver btusb_driver;
  49
  50 #define BTUSB_IGNORE            0x01
  51 #define BTUSB_DIGIANSWER        0x02
  52 #define BTUSB_CSR               0x04
  53 #define BTUSB_SNIFFER           0x08
  54 #define BTUSB_BCM92035          0x10
  55 #define BTUSB_BROKEN_ISOC       0x20
  56 #define BTUSB_WRONG_SCO_MTU     0x40
  57 #define BTUSB_ATH3012           0x80
  58 #define BTUSB_INTEL_BOOT        0x200
  59
  60 static struct usb_device_id btusb_table[] = {
  61         /* Generic Bluetooth USB device */
  62         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  63
  64         /* Apple-specific (Broadcom) devices */
  65         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  66
  67         /* MediaTek MT76x0E */
  68         { USB_DEVICE(0x0e8d, 0x763f) },
  69
  70         /* Broadcom SoftSailing reporting vendor specific */
  71         { USB_DEVICE(0x0a5c, 0x21e1) },
  72
  73         /* Apple MacBookPro 7,1 */
  74         { USB_DEVICE(0x05ac, 0x8213) },
  75
  76         /* Apple iMac11,1 */
  77         { USB_DEVICE(0x05ac, 0x8215) },
  78
  79         /* Apple MacBookPro6,2 */
  80         { USB_DEVICE(0x05ac, 0x8218) },
  81
  82         /* Apple MacBookAir3,1, MacBookAir3,2 */
  83         { USB_DEVICE(0x05ac, 0x821b) },
  84
  85         /* Apple MacBookAir4,1 */
  86         { USB_DEVICE(0x05ac, 0x821f) },
  87
  88         /* Apple MacBookPro8,2 */
  89         { USB_DEVICE(0x05ac, 0x821a) },
  90
  91         /* Apple MacMini5,1 */
  92         { USB_DEVICE(0x05ac, 0x8281) },
  93
  94         /* AVM BlueFRITZ! USB v2.0 */
  95         { USB_DEVICE(0x057c, 0x3800) },
  96
  97         /* Bluetooth Ultraport Module from IBM */
  98         { USB_DEVICE(0x04bf, 0x030a) },
  99
 100         /* ALPS Modules with non-standard id */
 101         { USB_DEVICE(0x044e, 0x3001) },
 102         { USB_DEVICE(0x044e, 0x3002) },
 103
 104         /* Ericsson with non-standard id */
 105         { USB_DEVICE(0x0bdb, 0x1002) },
 106
 107         /* Canyon CN-BTU1 with HID interfaces */
 108         { USB_DEVICE(0x0c10, 0x0000) },
 109
 110         /* Broadcom BCM20702A0 */
 111         { USB_DEVICE(0x0489, 0xe042) },
 112         { USB_DEVICE(0x04ca, 0x2003) },
 113         { USB_DEVICE(0x0b05, 0x17b5) },
 114         { USB_DEVICE(0x0b05, 0x17cb) },
 115         { USB_DEVICE(0x413c, 0x8197) },
 116
 117         /* Foxconn - Hon Hai */
 118         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 119
 120         /* Broadcom devices with vendor specific id */
 121         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 122
 123         /* ASUSTek Computer - Broadcom based */
 124         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
 125
 126         /* Belkin F8065bf - Broadcom based */
 127         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 128
 129         /* IMC Networks - Broadcom based */
 130         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 131
 132         /* Intel Bluetooth USB Bootloader (RAM module) */
 133         { USB_DEVICE(0x8087, 0x0a5a),
 134           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 135
 136         { }     /* Terminating entry */
 137 };
 138
 139 MODULE_DEVICE_TABLE(usb, btusb_table);
 140
 141 static struct usb_device_id blacklist_table[] = {
 142         /* CSR BlueCore devices */
 143         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 144
 145         /* Broadcom BCM2033 without firmware */
 146         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 147
 148         /* Atheros 3011 with sflash firmware */
 149         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 150         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 151         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 152         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 153         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 154         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 155         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 156
 157         /* Atheros AR9285 Malbec with sflash firmware */
 158         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 159
 160         /* Atheros 3012 with sflash firmware */
 161         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 208
 209         /* Atheros AR5BBU12 with sflash firmware */
 210         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 211
 212         /* Atheros AR5BBU12 with sflash firmware */
 213         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 215
 216         /* Broadcom BCM2035 */
 217         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 218         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 219         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 220
 221         /* Broadcom BCM2045 */
 222         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 223         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 224
 225         /* IBM/Lenovo ThinkPad with Broadcom chip */
 226         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 227         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 228
 229         /* HP laptop with Broadcom chip */
 230         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 231
 232         /* Dell laptop with Broadcom chip */
 233         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 234
 235         /* Dell Wireless 370 and 410 devices */
 236         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 237         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 238
 239         /* Belkin F8T012 and F8T013 devices */
 240         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 241         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 242
 243         /* Asus WL-BTD202 device */
 244         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 245
 246         /* Kensington Bluetooth USB adapter */
 247         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 248
 249         /* RTX Telecom based adapters with buggy SCO support */
 250         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 251         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 252
 253         /* CONWISE Technology based adapters with buggy SCO support */
 254         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 255
 256         /* Digianswer devices */
 257         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 258         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 259
 260         /* CSR BlueCore Bluetooth Sniffer */
 261         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 262
 263         /* Frontline ComProbe Bluetooth Sniffer */
 264         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 265
 266         { }     /* Terminating entry */
 267 };
 268
 269 #define BTUSB_MAX_ISOC_FRAMES   10
 270
 271 #define BTUSB_INTR_RUNNING      0
 272 #define BTUSB_BULK_RUNNING      1
 273 #define BTUSB_ISOC_RUNNING      2
 274 #define BTUSB_SUSPENDING        3
 275 #define BTUSB_DID_ISO_RESUME    4
 276
 277 struct btusb_data {
 278         struct hci_dev       *hdev;
 279         struct usb_device    *udev;
 280         struct usb_interface *intf;
 281         struct usb_interface *isoc;
 282
 283         spinlock_t lock;
 284
 285         unsigned long flags;
 286
 287         struct work_struct work;
 288         struct work_struct waker;
 289
 290         struct usb_anchor tx_anchor;
 291         struct usb_anchor intr_anchor;
 292         struct usb_anchor bulk_anchor;
 293         struct usb_anchor isoc_anchor;
 294         struct usb_anchor deferred;
 295         int tx_in_flight;
 296         spinlock_t txlock;
 297
 298         struct usb_endpoint_descriptor *intr_ep;
 299         struct usb_endpoint_descriptor *bulk_tx_ep;
 300         struct usb_endpoint_descriptor *bulk_rx_ep;
 301         struct usb_endpoint_descriptor *isoc_tx_ep;
 302         struct usb_endpoint_descriptor *isoc_rx_ep;
 303
 304         __u8 cmdreq_type;
 305
 306         unsigned int sco_num;
 307         int isoc_altsetting;
 308         int suspend_count;
 309 };
 310
 311 static int inc_tx(struct btusb_data *data)
 312 {
 313         unsigned long flags;
 314         int rv;
 315
 316         spin_lock_irqsave(&data->txlock, flags);
 317         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 318         if (!rv)
 319                 data->tx_in_flight++;
 320         spin_unlock_irqrestore(&data->txlock, flags);
 321
 322         return rv;
 323 }
 324
 325 static void btusb_intr_complete(struct urb *urb)
 326 {
 327         struct hci_dev *hdev = urb->context;
 328         struct btusb_data *data = hdev->driver_data;
 329         int err;
 330
 331         BT_DBG("%s urb %p status %d count %d", hdev->name,
 332                                         urb, urb->status, urb->actual_length);
 333
 334         if (!test_bit(HCI_RUNNING, &hdev->flags))
 335                 return;
 336
 337         if (urb->status == 0) {
 338                 hdev->stat.byte_rx += urb->actual_length;
 339
 340                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 341                                                 urb->transfer_buffer,
 342                                                 urb->actual_length) < 0) {
 343                         BT_ERR("%s corrupted event packet", hdev->name);
 344                         hdev->stat.err_rx++;
 345                 }
 346         } else if (urb->status == -ENOENT) {
 347                 /* Avoid suspend failed when usb_kill_urb */
 348                 return;
 349         }
 350
 351         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 352                 return;
 353
 354         usb_mark_last_busy(data->udev);
 355         usb_anchor_urb(urb, &data->intr_anchor);
 356
 357         err = usb_submit_urb(urb, GFP_ATOMIC);
 358         if (err < 0) {
 359                 /* -EPERM: urb is being killed;
 360                  * -ENODEV: device got disconnected */
 361                 if (err != -EPERM && err != -ENODEV)
 362                         BT_ERR("%s urb %p failed to resubmit (%d)",
 363                                                 hdev->name, urb, -err);
 364                 usb_unanchor_urb(urb);
 365         }
 366 }
 367
 368 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 369 {
 370         struct btusb_data *data = hdev->driver_data;
 371         struct urb *urb;
 372         unsigned char *buf;
 373         unsigned int pipe;
 374         int err, size;
 375
 376         BT_DBG("%s", hdev->name);
 377
 378         if (!data->intr_ep)
 379                 return -ENODEV;
 380
 381         urb = usb_alloc_urb(0, mem_flags);
 382         if (!urb)
 383                 return -ENOMEM;
 384
 385         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 386
 387         buf = kmalloc(size, mem_flags);
 388         if (!buf) {
 389                 usb_free_urb(urb);
 390                 return -ENOMEM;
 391         }
 392
 393         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 394
 395         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 396                                                 btusb_intr_complete, hdev,
 397                                                 data->intr_ep->bInterval);
 398
 399         urb->transfer_flags |= URB_FREE_BUFFER;
 400
 401         usb_anchor_urb(urb, &data->intr_anchor);
 402
 403         err = usb_submit_urb(urb, mem_flags);
 404         if (err < 0) {
 405                 BT_ERR("%s urb %p submission failed (%d)",
 406                                                 hdev->name, urb, -err);
 407                 usb_unanchor_urb(urb);
 408         }
 409
 410         usb_free_urb(urb);
 411
 412         return err;
 413 }
 414
 415 static void btusb_bulk_complete(struct urb *urb)
 416 {
 417         struct hci_dev *hdev = urb->context;
 418         struct btusb_data *data = hdev->driver_data;
 419         int err;
 420
 421         BT_DBG("%s urb %p status %d count %d", hdev->name,
 422                                         urb, urb->status, urb->actual_length);
 423
 424         if (!test_bit(HCI_RUNNING, &hdev->flags))
 425                 return;
 426
 427         if (urb->status == 0) {
 428                 hdev->stat.byte_rx += urb->actual_length;
 429
 430                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 431                                                 urb->transfer_buffer,
 432                                                 urb->actual_length) < 0) {
 433                         BT_ERR("%s corrupted ACL packet", hdev->name);
 434                         hdev->stat.err_rx++;
 435                 }
 436         } else if (urb->status == -ENOENT) {
 437                 /* Avoid suspend failed when usb_kill_urb */
 438                 return;
 439         }
 440
 441         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 442                 return;
 443
 444         usb_anchor_urb(urb, &data->bulk_anchor);
 445         usb_mark_last_busy(data->udev);
 446
 447         err = usb_submit_urb(urb, GFP_ATOMIC);
 448         if (err < 0) {
 449                 /* -EPERM: urb is being killed;
 450                  * -ENODEV: device got disconnected */
 451                 if (err != -EPERM && err != -ENODEV)
 452                         BT_ERR("%s urb %p failed to resubmit (%d)",
 453                                                 hdev->name, urb, -err);
 454                 usb_unanchor_urb(urb);
 455         }
 456 }
 457
 458 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 459 {
 460         struct btusb_data *data = hdev->driver_data;
 461         struct urb *urb;
 462         unsigned char *buf;
 463         unsigned int pipe;
 464         int err, size = HCI_MAX_FRAME_SIZE;
 465
 466         BT_DBG("%s", hdev->name);
 467
 468         if (!data->bulk_rx_ep)
 469                 return -ENODEV;
 470
 471         urb = usb_alloc_urb(0, mem_flags);
 472         if (!urb)
 473                 return -ENOMEM;
 474
 475         buf = kmalloc(size, mem_flags);
 476         if (!buf) {
 477                 usb_free_urb(urb);
 478                 return -ENOMEM;
 479         }
 480
 481         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 482
 483         usb_fill_bulk_urb(urb, data->udev, pipe,
 484                                         buf, size, btusb_bulk_complete, hdev);
 485
 486         urb->transfer_flags |= URB_FREE_BUFFER;
 487
 488         usb_mark_last_busy(data->udev);
 489         usb_anchor_urb(urb, &data->bulk_anchor);
 490
 491         err = usb_submit_urb(urb, mem_flags);
 492         if (err < 0) {
 493                 BT_ERR("%s urb %p submission failed (%d)",
 494                                                 hdev->name, urb, -err);
 495                 usb_unanchor_urb(urb);
 496         }
 497
 498         usb_free_urb(urb);
 499
 500         return err;
 501 }
 502
 503 static void btusb_isoc_complete(struct urb *urb)
 504 {
 505         struct hci_dev *hdev = urb->context;
 506         struct btusb_data *data = hdev->driver_data;
 507         int i, err;
 508
 509         BT_DBG("%s urb %p status %d count %d", hdev->name,
 510                                         urb, urb->status, urb->actual_length);
 511
 512         if (!test_bit(HCI_RUNNING, &hdev->flags))
 513                 return;
 514
 515         if (urb->status == 0) {
 516                 for (i = 0; i < urb->number_of_packets; i++) {
 517                         unsigned int offset = urb->iso_frame_desc[i].offset;
 518                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 519
 520                         if (urb->iso_frame_desc[i].status)
 521                                 continue;
 522
 523                         hdev->stat.byte_rx += length;
 524
 525                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 526                                                 urb->transfer_buffer + offset,
 527                                                                 length) < 0) {
 528                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 529                                 hdev->stat.err_rx++;
 530                         }
 531                 }
 532         } else if (urb->status == -ENOENT) {
 533                 /* Avoid suspend failed when usb_kill_urb */
 534                 return;
 535         }
 536
 537         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 538                 return;
 539
 540         usb_anchor_urb(urb, &data->isoc_anchor);
 541
 542         err = usb_submit_urb(urb, GFP_ATOMIC);
 543         if (err < 0) {
 544                 /* -EPERM: urb is being killed;
 545                  * -ENODEV: device got disconnected */
 546                 if (err != -EPERM && err != -ENODEV)
 547                         BT_ERR("%s urb %p failed to resubmit (%d)",
 548                                                 hdev->name, urb, -err);
 549                 usb_unanchor_urb(urb);
 550         }
 551 }
 552
 553 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 554 {
 555         int i, offset = 0;
 556
 557         BT_DBG("len %d mtu %d", len, mtu);
 558
 559         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 560                                         i++, offset += mtu, len -= mtu) {
 561                 urb->iso_frame_desc[i].offset = offset;
 562                 urb->iso_frame_desc[i].length = mtu;
 563         }
 564
 565         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 566                 urb->iso_frame_desc[i].offset = offset;
 567                 urb->iso_frame_desc[i].length = len;
 568                 i++;
 569         }
 570
 571         urb->number_of_packets = i;
 572 }
 573
 574 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 575 {
 576         struct btusb_data *data = hdev->driver_data;
 577         struct urb *urb;
 578         unsigned char *buf;
 579         unsigned int pipe;
 580         int err, size;
 581
 582         BT_DBG("%s", hdev->name);
 583
 584         if (!data->isoc_rx_ep)
 585                 return -ENODEV;
 586
 587         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 588         if (!urb)
 589                 return -ENOMEM;
 590
 591         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 592                                                 BTUSB_MAX_ISOC_FRAMES;
 593
 594         buf = kmalloc(size, mem_flags);
 595         if (!buf) {
 596                 usb_free_urb(urb);
 597                 return -ENOMEM;
 598         }
 599
 600         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 601
 602         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 603                                 hdev, data->isoc_rx_ep->bInterval);
 604
 605         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 606
 607         __fill_isoc_descriptor(urb, size,
 608                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 609
 610         usb_anchor_urb(urb, &data->isoc_anchor);
 611
 612         err = usb_submit_urb(urb, mem_flags);
 613         if (err < 0) {
 614                 BT_ERR("%s urb %p submission failed (%d)",
 615                                                 hdev->name, urb, -err);
 616                 usb_unanchor_urb(urb);
 617         }
 618
 619         usb_free_urb(urb);
 620
 621         return err;
 622 }
 623
 624 static void btusb_tx_complete(struct urb *urb)
 625 {
 626         struct sk_buff *skb = urb->context;
 627         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 628         struct btusb_data *data = hdev->driver_data;
 629
 630         BT_DBG("%s urb %p status %d count %d", hdev->name,
 631                                         urb, urb->status, urb->actual_length);
 632
 633         if (!test_bit(HCI_RUNNING, &hdev->flags))
 634                 goto done;
 635
 636         if (!urb->status)
 637                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 638         else
 639                 hdev->stat.err_tx++;
 640
 641 done:
 642         spin_lock(&data->txlock);
 643         data->tx_in_flight--;
 644         spin_unlock(&data->txlock);
 645
 646         kfree(urb->setup_packet);
 647
 648         kfree_skb(skb);
 649 }
 650
 651 static void btusb_isoc_tx_complete(struct urb *urb)
 652 {
 653         struct sk_buff *skb = urb->context;
 654         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 655
 656         BT_DBG("%s urb %p status %d count %d", hdev->name,
 657                                         urb, urb->status, urb->actual_length);
 658
 659         if (!test_bit(HCI_RUNNING, &hdev->flags))
 660                 goto done;
 661
 662         if (!urb->status)
 663                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 664         else
 665                 hdev->stat.err_tx++;
 666
 667 done:
 668         kfree(urb->setup_packet);
 669
 670         kfree_skb(skb);
 671 }
 672
 673 static int btusb_open(struct hci_dev *hdev)
 674 {
 675         struct btusb_data *data = hdev->driver_data;
 676         int err;
 677
 678         BT_DBG("%s", hdev->name);
 679
 680         err = usb_autopm_get_interface(data->intf);
 681         if (err < 0)
 682                 return err;
 683
 684         data->intf->needs_remote_wakeup = 1;
 685
 686         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 687                 goto done;
 688
 689         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 690                 goto done;
 691
 692         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 693         if (err < 0)
 694                 goto failed;
 695
 696         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 697         if (err < 0) {
 698                 usb_kill_anchored_urbs(&data->intr_anchor);
 699                 goto failed;
 700         }
 701
 702         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 703         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 704
 705 done:
 706         usb_autopm_put_interface(data->intf);
 707         return 0;
 708
 709 failed:
 710         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 711         clear_bit(HCI_RUNNING, &hdev->flags);
 712         usb_autopm_put_interface(data->intf);
 713         return err;
 714 }
 715
 716 static void btusb_stop_traffic(struct btusb_data *data)
 717 {
 718         usb_kill_anchored_urbs(&data->intr_anchor);
 719         usb_kill_anchored_urbs(&data->bulk_anchor);
 720         usb_kill_anchored_urbs(&data->isoc_anchor);
 721 }
 722
 723 static int btusb_close(struct hci_dev *hdev)
 724 {
 725         struct btusb_data *data = hdev->driver_data;
 726         int err;
 727
 728         BT_DBG("%s", hdev->name);
 729
 730         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 731                 return 0;
 732
 733         cancel_work_sync(&data->work);
 734         cancel_work_sync(&data->waker);
 735
 736         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 737         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 738         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 739
 740         btusb_stop_traffic(data);
 741         err = usb_autopm_get_interface(data->intf);
 742         if (err < 0)
 743                 goto failed;
 744
 745         data->intf->needs_remote_wakeup = 0;
 746         usb_autopm_put_interface(data->intf);
 747
 748 failed:
 749         usb_scuttle_anchored_urbs(&data->deferred);
 750         return 0;
 751 }
 752
 753 static int btusb_flush(struct hci_dev *hdev)
 754 {
 755         struct btusb_data *data = hdev->driver_data;
 756
 757         BT_DBG("%s", hdev->name);
 758
 759         usb_kill_anchored_urbs(&data->tx_anchor);
 760
 761         return 0;
 762 }
 763
 764 static int btusb_send_frame(struct sk_buff *skb)
 765 {
 766         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 767         struct btusb_data *data = hdev->driver_data;
 768         struct usb_ctrlrequest *dr;
 769         struct urb *urb;
 770         unsigned int pipe;
 771         int err;
 772
 773         BT_DBG("%s", hdev->name);
 774
 775         if (!test_bit(HCI_RUNNING, &hdev->flags))
 776                 return -EBUSY;
 777
 778         switch (bt_cb(skb)->pkt_type) {
 779         case HCI_COMMAND_PKT:
 780                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 781                 if (!urb)
 782                         return -ENOMEM;
 783
 784                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 785                 if (!dr) {
 786                         usb_free_urb(urb);
 787                         return -ENOMEM;
 788                 }
 789
 790                 dr->bRequestType = data->cmdreq_type;
 791                 dr->bRequest     = 0;
 792                 dr->wIndex       = 0;
 793                 dr->wValue       = 0;
 794                 dr->wLength      = __cpu_to_le16(skb->len);
 795
 796                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 797
 798                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 799                                 skb->data, skb->len, btusb_tx_complete, skb);
 800
 801                 hdev->stat.cmd_tx++;
 802                 break;
 803
 804         case HCI_ACLDATA_PKT:
 805                 if (!data->bulk_tx_ep)
 806                         return -ENODEV;
 807
 808                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 809                 if (!urb)
 810                         return -ENOMEM;
 811
 812                 pipe = usb_sndbulkpipe(data->udev,
 813                                         data->bulk_tx_ep->bEndpointAddress);
 814
 815                 usb_fill_bulk_urb(urb, data->udev, pipe,
 816                                 skb->data, skb->len, btusb_tx_complete, skb);
 817
 818                 hdev->stat.acl_tx++;
 819                 break;
 820
 821         case HCI_SCODATA_PKT:
 822                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 823                         return -ENODEV;
 824
 825                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 826                 if (!urb)
 827                         return -ENOMEM;
 828
 829                 pipe = usb_sndisocpipe(data->udev,
 830                                         data->isoc_tx_ep->bEndpointAddress);
 831
 832                 usb_fill_int_urb(urb, data->udev, pipe,
 833                                 skb->data, skb->len, btusb_isoc_tx_complete,
 834                                 skb, data->isoc_tx_ep->bInterval);
 835
 836                 urb->transfer_flags  = URB_ISO_ASAP;
 837
 838                 __fill_isoc_descriptor(urb, skb->len,
 839                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 840
 841                 hdev->stat.sco_tx++;
 842                 goto skip_waking;
 843
 844         default:
 845                 return -EILSEQ;
 846         }
 847
 848         err = inc_tx(data);
 849         if (err) {
 850                 usb_anchor_urb(urb, &data->deferred);
 851                 schedule_work(&data->waker);
 852                 err = 0;
 853                 goto done;
 854         }
 855
 856 skip_waking:
 857         usb_anchor_urb(urb, &data->tx_anchor);
 858
 859         err = usb_submit_urb(urb, GFP_ATOMIC);
 860         if (err < 0) {
 861                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 862                 kfree(urb->setup_packet);
 863                 usb_unanchor_urb(urb);
 864         } else {
 865                 usb_mark_last_busy(data->udev);
 866         }
 867
 868 done:
 869         usb_free_urb(urb);
 870         return err;
 871 }
 872
 873 static void btusb_destruct(struct hci_dev *hdev)
 874 {
 875         struct btusb_data *data = hdev->driver_data;
 876
 877         BT_DBG("%s", hdev->name);
 878
 879         kfree(data);
 880 }
 881
 882 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 883 {
 884         struct btusb_data *data = hdev->driver_data;
 885
 886         BT_DBG("%s evt %d", hdev->name, evt);
 887
 888         if (hdev->conn_hash.sco_num != data->sco_num) {
 889                 data->sco_num = hdev->conn_hash.sco_num;
 890                 schedule_work(&data->work);
 891         }
 892 }
 893
 894 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 895 {
 896         struct btusb_data *data = hdev->driver_data;
 897         struct usb_interface *intf = data->isoc;
 898         struct usb_endpoint_descriptor *ep_desc;
 899         int i, err;
 900
 901         if (!data->isoc)
 902                 return -ENODEV;
 903
 904         err = usb_set_interface(data->udev, 1, altsetting);
 905         if (err < 0) {
 906                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 907                 return err;
 908         }
 909
 910         data->isoc_altsetting = altsetting;
 911
 912         data->isoc_tx_ep = NULL;
 913         data->isoc_rx_ep = NULL;
 914
 915         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 916                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 917
 918                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 919                         data->isoc_tx_ep = ep_desc;
 920                         continue;
 921                 }
 922
 923                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 924                         data->isoc_rx_ep = ep_desc;
 925                         continue;
 926                 }
 927         }
 928
 929         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 930                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 931                 return -ENODEV;
 932         }
 933
 934         return 0;
 935 }
 936
 937 static void btusb_work(struct work_struct *work)
 938 {
 939         struct btusb_data *data = container_of(work, struct btusb_data, work);
 940         struct hci_dev *hdev = data->hdev;
 941         int err;
 942
 943         if (hdev->conn_hash.sco_num > 0) {
 944                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 945                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 946                         if (err < 0) {
 947                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 948                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 949                                 return;
 950                         }
 951
 952                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 953                 }
 954                 if (data->isoc_altsetting != 2) {
 955                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 956                         usb_kill_anchored_urbs(&data->isoc_anchor);
 957
 958                         if (__set_isoc_interface(hdev, 2) < 0)
 959                                 return;
 960                 }
 961
 962                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 963                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 964                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 965                         else
 966                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 967                 }
 968         } else {
 969                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 970                 usb_kill_anchored_urbs(&data->isoc_anchor);
 971
 972                 __set_isoc_interface(hdev, 0);
 973                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 974                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 975         }
 976 }
 977
 978 static void btusb_waker(struct work_struct *work)
 979 {
 980         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 981         int err;
 982
 983         err = usb_autopm_get_interface(data->intf);
 984         if (err < 0)
 985                 return;
 986
 987         usb_autopm_put_interface(data->intf);
 988 }
 989
 990 static int btusb_probe(struct usb_interface *intf,
 991                                 const struct usb_device_id *id)
 992 {
 993         struct usb_endpoint_descriptor *ep_desc;
 994         struct btusb_data *data;
 995         struct hci_dev *hdev;
 996         int i, err;
 997
 998         BT_DBG("intf %p id %p", intf, id);
 999
1000         /* interface numbers are hardcoded in the spec */
1001         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1002                 return -ENODEV;
1003
1004         if (!id->driver_info) {
1005                 const struct usb_device_id *match;
1006                 match = usb_match_id(intf, blacklist_table);
1007                 if (match)
1008                         id = match;
1009         }
1010
1011         if (id->driver_info == BTUSB_IGNORE)
1012                 return -ENODEV;
1013
1014         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1015                 return -ENODEV;
1016
1017         if (ignore_csr && id->driver_info & BTUSB_CSR)
1018                 return -ENODEV;
1019
1020         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1021                 return -ENODEV;
1022
1023         if (id->driver_info & BTUSB_ATH3012) {
1024                 struct usb_device *udev = interface_to_usbdev(intf);
1025
1026                 /* Old firmware would otherwise let ath3k driver load
1027                  * patch and sysconfig files */
1028                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1029                         return -ENODEV;
1030         }
1031
1032         data = kzalloc(sizeof(*data), GFP_KERNEL);
1033         if (!data)
1034                 return -ENOMEM;
1035
1036         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1037                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1038
1039                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1040                         data->intr_ep = ep_desc;
1041                         continue;
1042                 }
1043
1044                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1045                         data->bulk_tx_ep = ep_desc;
1046                         continue;
1047                 }
1048
1049                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1050                         data->bulk_rx_ep = ep_desc;
1051                         continue;
1052                 }
1053         }
1054
1055         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1056                 kfree(data);
1057                 return -ENODEV;
1058         }
1059
1060         data->cmdreq_type = USB_TYPE_CLASS;
1061
1062         data->udev = interface_to_usbdev(intf);
1063         data->intf = intf;
1064
1065         spin_lock_init(&data->lock);
1066
1067         INIT_WORK(&data->work, btusb_work);
1068         INIT_WORK(&data->waker, btusb_waker);
1069         spin_lock_init(&data->txlock);
1070
1071         init_usb_anchor(&data->tx_anchor);
1072         init_usb_anchor(&data->intr_anchor);
1073         init_usb_anchor(&data->bulk_anchor);
1074         init_usb_anchor(&data->isoc_anchor);
1075         init_usb_anchor(&data->deferred);
1076
1077         hdev = hci_alloc_dev();
1078         if (!hdev) {
1079                 kfree(data);
1080                 return -ENOMEM;
1081         }
1082
1083         hdev->bus = HCI_USB;
1084         hdev->driver_data = data;
1085
1086         data->hdev = hdev;
1087
1088         SET_HCIDEV_DEV(hdev, &intf->dev);
1089
1090         hdev->open     = btusb_open;
1091         hdev->close    = btusb_close;
1092         hdev->flush    = btusb_flush;
1093         hdev->send     = btusb_send_frame;
1094         hdev->destruct = btusb_destruct;
1095         hdev->notify   = btusb_notify;
1096
1097         hdev->owner = THIS_MODULE;
1098
1099         if (id->driver_info & BTUSB_INTEL_BOOT)
1100                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1101
1102         /* Interface numbers are hardcoded in the specification */
1103         data->isoc = usb_ifnum_to_if(data->udev, 1);
1104
1105         if (!reset)
1106                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1107
1108         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1109                 if (!disable_scofix)
1110                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1111         }
1112
1113         if (id->driver_info & BTUSB_BROKEN_ISOC)
1114                 data->isoc = NULL;
1115
1116         if (id->driver_info & BTUSB_DIGIANSWER) {
1117                 data->cmdreq_type = USB_TYPE_VENDOR;
1118                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1119         }
1120
1121         if (id->driver_info & BTUSB_CSR) {
1122                 struct usb_device *udev = data->udev;
1123
1124                 /* Old firmware would otherwise execute USB reset */
1125                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1126                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1127         }
1128
1129         if (id->driver_info & BTUSB_SNIFFER) {
1130                 struct usb_device *udev = data->udev;
1131
1132                 /* New sniffer firmware has crippled HCI interface */
1133                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1134                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1135
1136                 data->isoc = NULL;
1137         }
1138
1139         if (id->driver_info & BTUSB_BCM92035) {
1140                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1141                 struct sk_buff *skb;
1142
1143                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1144                 if (skb) {
1145                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1146                         skb_queue_tail(&hdev->driver_init, skb);
1147                 }
1148         }
1149
1150         if (data->isoc) {
1151                 err = usb_driver_claim_interface(&btusb_driver,
1152                                                         data->isoc, data);
1153                 if (err < 0) {
1154                         hci_free_dev(hdev);
1155                         kfree(data);
1156                         return err;
1157                 }
1158         }
1159
1160         err = hci_register_dev(hdev);
1161         if (err < 0) {
1162                 hci_free_dev(hdev);
1163                 kfree(data);
1164                 return err;
1165         }
1166
1167         usb_set_intfdata(intf, data);
1168
1169         return 0;
1170 }
1171
1172 static void btusb_disconnect(struct usb_interface *intf)
1173 {
1174         struct btusb_data *data = usb_get_intfdata(intf);
1175         struct hci_dev *hdev;
1176
1177         BT_DBG("intf %p", intf);
1178
1179         if (!data)
1180                 return;
1181
1182         hdev = data->hdev;
1183
1184         __hci_dev_hold(hdev);
1185
1186         usb_set_intfdata(data->intf, NULL);
1187
1188         if (data->isoc)
1189                 usb_set_intfdata(data->isoc, NULL);
1190
1191         hci_unregister_dev(hdev);
1192
1193         if (intf == data->isoc)
1194                 usb_driver_release_interface(&btusb_driver, data->intf);
1195         else if (data->isoc)
1196                 usb_driver_release_interface(&btusb_driver, data->isoc);
1197
1198         __hci_dev_put(hdev);
1199
1200         hci_free_dev(hdev);
1201 }
1202
1203 #ifdef CONFIG_PM
1204 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1205 {
1206         struct btusb_data *data = usb_get_intfdata(intf);
1207
1208         BT_DBG("intf %p", intf);
1209
1210         if (data->suspend_count++)
1211                 return 0;
1212
1213         spin_lock_irq(&data->txlock);
1214         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1215                 set_bit(BTUSB_SUSPENDING, &data->flags);
1216                 spin_unlock_irq(&data->txlock);
1217         } else {
1218                 spin_unlock_irq(&data->txlock);
1219                 data->suspend_count--;
1220                 return -EBUSY;
1221         }
1222
1223         cancel_work_sync(&data->work);
1224
1225         btusb_stop_traffic(data);
1226         usb_kill_anchored_urbs(&data->tx_anchor);
1227
1228         return 0;
1229 }
1230
1231 static void play_deferred(struct btusb_data *data)
1232 {
1233         struct urb *urb;
1234         int err;
1235
1236         while ((urb = usb_get_from_anchor(&data->deferred))) {
1237                 err = usb_submit_urb(urb, GFP_ATOMIC);
1238                 if (err < 0)
1239                         break;
1240
1241                 data->tx_in_flight++;
1242         }
1243         usb_scuttle_anchored_urbs(&data->deferred);
1244 }
1245
1246 static int btusb_resume(struct usb_interface *intf)
1247 {
1248         struct btusb_data *data = usb_get_intfdata(intf);
1249         struct hci_dev *hdev = data->hdev;
1250         int err = 0;
1251
1252         BT_DBG("intf %p", intf);
1253
1254         if (--data->suspend_count)
1255                 return 0;
1256
1257         if (!test_bit(HCI_RUNNING, &hdev->flags))
1258                 goto done;
1259
1260         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1261                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1262                 if (err < 0) {
1263                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1264                         goto failed;
1265                 }
1266         }
1267
1268         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1269                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1270                 if (err < 0) {
1271                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1272                         goto failed;
1273                 }
1274
1275                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1276         }
1277
1278         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1279                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1280                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1281                 else
1282                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1283         }
1284
1285         spin_lock_irq(&data->txlock);
1286         play_deferred(data);
1287         clear_bit(BTUSB_SUSPENDING, &data->flags);
1288         spin_unlock_irq(&data->txlock);
1289         schedule_work(&data->work);
1290
1291         return 0;
1292
1293 failed:
1294         usb_scuttle_anchored_urbs(&data->deferred);
1295 done:
1296         spin_lock_irq(&data->txlock);
1297         clear_bit(BTUSB_SUSPENDING, &data->flags);
1298         spin_unlock_irq(&data->txlock);
1299
1300         return err;
1301 }
1302 #endif
1303
1304 static struct usb_driver btusb_driver = {
1305         .name           = "btusb",
1306         .probe          = btusb_probe,
1307         .disconnect     = btusb_disconnect,
1308 #ifdef CONFIG_PM
1309         .suspend        = btusb_suspend,
1310         .resume         = btusb_resume,
1311 #endif
1312         .id_table       = btusb_table,
1313         .supports_autosuspend = 1,
1314 };
1315
1316 static int __init btusb_init(void)
1317 {
1318         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1319
1320         return usb_register(&btusb_driver);
1321 }
1322
1323 static void __exit btusb_exit(void)
1324 {
1325         usb_deregister(&btusb_driver);
1326 }
1327
1328 module_init(btusb_init);
1329 module_exit(btusb_exit);
1330
1331 module_param(ignore_dga, bool, 0644);
1332 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1333
1334 module_param(ignore_csr, bool, 0644);
1335 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1336
1337 module_param(ignore_sniffer, bool, 0644);
1338 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1339
1340 module_param(disable_scofix, bool, 0644);
1341 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1342
1343 module_param(force_scofix, bool, 0644);
1344 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1345
1346 module_param(reset, bool, 0644);
1347 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1348
1349 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1350 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1351 MODULE_VERSION(VERSION);
1352 MODULE_LICENSE("GPL");