drivers/bluetooth/btusb.c

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