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(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 209
 210         /* Atheros AR5BBU12 with sflash firmware */
 211         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 212
 213         /* Atheros AR5BBU12 with sflash firmware */
 214         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 216
 217         /* Broadcom BCM2035 */
 218         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 219         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 220         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 221
 222         /* Broadcom BCM2045 */
 223         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 224         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 225
 226         /* IBM/Lenovo ThinkPad with Broadcom chip */
 227         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 228         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 229
 230         /* HP laptop with Broadcom chip */
 231         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 232
 233         /* Dell laptop with Broadcom chip */
 234         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 235
 236         /* Dell Wireless 370 and 410 devices */
 237         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 238         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 239
 240         /* Belkin F8T012 and F8T013 devices */
 241         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 242         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 243
 244         /* Asus WL-BTD202 device */
 245         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 246
 247         /* Kensington Bluetooth USB adapter */
 248         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 249
 250         /* RTX Telecom based adapters with buggy SCO support */
 251         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 252         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 253
 254         /* CONWISE Technology based adapters with buggy SCO support */
 255         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 256
 257         /* Digianswer devices */
 258         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 259         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 260
 261         /* CSR BlueCore Bluetooth Sniffer */
 262         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 263
 264         /* Frontline ComProbe Bluetooth Sniffer */
 265         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 266
 267         { }     /* Terminating entry */
 268 };
 269
 270 #define BTUSB_MAX_ISOC_FRAMES   10
 271
 272 #define BTUSB_INTR_RUNNING      0
 273 #define BTUSB_BULK_RUNNING      1
 274 #define BTUSB_ISOC_RUNNING      2
 275 #define BTUSB_SUSPENDING        3
 276 #define BTUSB_DID_ISO_RESUME    4
 277
 278 struct btusb_data {
 279         struct hci_dev       *hdev;
 280         struct usb_device    *udev;
 281         struct usb_interface *intf;
 282         struct usb_interface *isoc;
 283
 284         spinlock_t lock;
 285
 286         unsigned long flags;
 287
 288         struct work_struct work;
 289         struct work_struct waker;
 290
 291         struct usb_anchor tx_anchor;
 292         struct usb_anchor intr_anchor;
 293         struct usb_anchor bulk_anchor;
 294         struct usb_anchor isoc_anchor;
 295         struct usb_anchor deferred;
 296         int tx_in_flight;
 297         spinlock_t txlock;
 298
 299         struct usb_endpoint_descriptor *intr_ep;
 300         struct usb_endpoint_descriptor *bulk_tx_ep;
 301         struct usb_endpoint_descriptor *bulk_rx_ep;
 302         struct usb_endpoint_descriptor *isoc_tx_ep;
 303         struct usb_endpoint_descriptor *isoc_rx_ep;
 304
 305         __u8 cmdreq_type;
 306
 307         unsigned int sco_num;
 308         int isoc_altsetting;
 309         int suspend_count;
 310 };
 311
 312 static int inc_tx(struct btusb_data *data)
 313 {
 314         unsigned long flags;
 315         int rv;
 316
 317         spin_lock_irqsave(&data->txlock, flags);
 318         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 319         if (!rv)
 320                 data->tx_in_flight++;
 321         spin_unlock_irqrestore(&data->txlock, flags);
 322
 323         return rv;
 324 }
 325
 326 static void btusb_intr_complete(struct urb *urb)
 327 {
 328         struct hci_dev *hdev = urb->context;
 329         struct btusb_data *data = hdev->driver_data;
 330         int err;
 331
 332         BT_DBG("%s urb %p status %d count %d", hdev->name,
 333                                         urb, urb->status, urb->actual_length);
 334
 335         if (!test_bit(HCI_RUNNING, &hdev->flags))
 336                 return;
 337
 338         if (urb->status == 0) {
 339                 hdev->stat.byte_rx += urb->actual_length;
 340
 341                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 342                                                 urb->transfer_buffer,
 343                                                 urb->actual_length) < 0) {
 344                         BT_ERR("%s corrupted event packet", hdev->name);
 345                         hdev->stat.err_rx++;
 346                 }
 347         } else if (urb->status == -ENOENT) {
 348                 /* Avoid suspend failed when usb_kill_urb */
 349                 return;
 350         }
 351
 352         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 353                 return;
 354
 355         usb_mark_last_busy(data->udev);
 356         usb_anchor_urb(urb, &data->intr_anchor);
 357
 358         err = usb_submit_urb(urb, GFP_ATOMIC);
 359         if (err < 0) {
 360                 /* -EPERM: urb is being killed;
 361                  * -ENODEV: device got disconnected */
 362                 if (err != -EPERM && err != -ENODEV)
 363                         BT_ERR("%s urb %p failed to resubmit (%d)",
 364                                                 hdev->name, urb, -err);
 365                 usb_unanchor_urb(urb);
 366         }
 367 }
 368
 369 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 370 {
 371         struct btusb_data *data = hdev->driver_data;
 372         struct urb *urb;
 373         unsigned char *buf;
 374         unsigned int pipe;
 375         int err, size;
 376
 377         BT_DBG("%s", hdev->name);
 378
 379         if (!data->intr_ep)
 380                 return -ENODEV;
 381
 382         urb = usb_alloc_urb(0, mem_flags);
 383         if (!urb)
 384                 return -ENOMEM;
 385
 386         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 387
 388         buf = kmalloc(size, mem_flags);
 389         if (!buf) {
 390                 usb_free_urb(urb);
 391                 return -ENOMEM;
 392         }
 393
 394         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 395
 396         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 397                                                 btusb_intr_complete, hdev,
 398                                                 data->intr_ep->bInterval);
 399
 400         urb->transfer_flags |= URB_FREE_BUFFER;
 401
 402         usb_anchor_urb(urb, &data->intr_anchor);
 403
 404         err = usb_submit_urb(urb, mem_flags);
 405         if (err < 0) {
 406                 BT_ERR("%s urb %p submission failed (%d)",
 407                                                 hdev->name, urb, -err);
 408                 usb_unanchor_urb(urb);
 409         }
 410
 411         usb_free_urb(urb);
 412
 413         return err;
 414 }
 415
 416 static void btusb_bulk_complete(struct urb *urb)
 417 {
 418         struct hci_dev *hdev = urb->context;
 419         struct btusb_data *data = hdev->driver_data;
 420         int err;
 421
 422         BT_DBG("%s urb %p status %d count %d", hdev->name,
 423                                         urb, urb->status, urb->actual_length);
 424
 425         if (!test_bit(HCI_RUNNING, &hdev->flags))
 426                 return;
 427
 428         if (urb->status == 0) {
 429                 hdev->stat.byte_rx += urb->actual_length;
 430
 431                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 432                                                 urb->transfer_buffer,
 433                                                 urb->actual_length) < 0) {
 434                         BT_ERR("%s corrupted ACL packet", hdev->name);
 435                         hdev->stat.err_rx++;
 436                 }
 437         } else if (urb->status == -ENOENT) {
 438                 /* Avoid suspend failed when usb_kill_urb */
 439                 return;
 440         }
 441
 442         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 443                 return;
 444
 445         usb_anchor_urb(urb, &data->bulk_anchor);
 446         usb_mark_last_busy(data->udev);
 447
 448         err = usb_submit_urb(urb, GFP_ATOMIC);
 449         if (err < 0) {
 450                 /* -EPERM: urb is being killed;
 451                  * -ENODEV: device got disconnected */
 452                 if (err != -EPERM && err != -ENODEV)
 453                         BT_ERR("%s urb %p failed to resubmit (%d)",
 454                                                 hdev->name, urb, -err);
 455                 usb_unanchor_urb(urb);
 456         }
 457 }
 458
 459 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 460 {
 461         struct btusb_data *data = hdev->driver_data;
 462         struct urb *urb;
 463         unsigned char *buf;
 464         unsigned int pipe;
 465         int err, size = HCI_MAX_FRAME_SIZE;
 466
 467         BT_DBG("%s", hdev->name);
 468
 469         if (!data->bulk_rx_ep)
 470                 return -ENODEV;
 471
 472         urb = usb_alloc_urb(0, mem_flags);
 473         if (!urb)
 474                 return -ENOMEM;
 475
 476         buf = kmalloc(size, mem_flags);
 477         if (!buf) {
 478                 usb_free_urb(urb);
 479                 return -ENOMEM;
 480         }
 481
 482         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 483
 484         usb_fill_bulk_urb(urb, data->udev, pipe,
 485                                         buf, size, btusb_bulk_complete, hdev);
 486
 487         urb->transfer_flags |= URB_FREE_BUFFER;
 488
 489         usb_mark_last_busy(data->udev);
 490         usb_anchor_urb(urb, &data->bulk_anchor);
 491
 492         err = usb_submit_urb(urb, mem_flags);
 493         if (err < 0) {
 494                 BT_ERR("%s urb %p submission failed (%d)",
 495                                                 hdev->name, urb, -err);
 496                 usb_unanchor_urb(urb);
 497         }
 498
 499         usb_free_urb(urb);
 500
 501         return err;
 502 }
 503
 504 static void btusb_isoc_complete(struct urb *urb)
 505 {
 506         struct hci_dev *hdev = urb->context;
 507         struct btusb_data *data = hdev->driver_data;
 508         int i, err;
 509
 510         BT_DBG("%s urb %p status %d count %d", hdev->name,
 511                                         urb, urb->status, urb->actual_length);
 512
 513         if (!test_bit(HCI_RUNNING, &hdev->flags))
 514                 return;
 515
 516         if (urb->status == 0) {
 517                 for (i = 0; i < urb->number_of_packets; i++) {
 518                         unsigned int offset = urb->iso_frame_desc[i].offset;
 519                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 520
 521                         if (urb->iso_frame_desc[i].status)
 522                                 continue;
 523
 524                         hdev->stat.byte_rx += length;
 525
 526                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 527                                                 urb->transfer_buffer + offset,
 528                                                                 length) < 0) {
 529                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 530                                 hdev->stat.err_rx++;
 531                         }
 532                 }
 533         } else if (urb->status == -ENOENT) {
 534                 /* Avoid suspend failed when usb_kill_urb */
 535                 return;
 536         }
 537
 538         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 539                 return;
 540
 541         usb_anchor_urb(urb, &data->isoc_anchor);
 542
 543         err = usb_submit_urb(urb, GFP_ATOMIC);
 544         if (err < 0) {
 545                 /* -EPERM: urb is being killed;
 546                  * -ENODEV: device got disconnected */
 547                 if (err != -EPERM && err != -ENODEV)
 548                         BT_ERR("%s urb %p failed to resubmit (%d)",
 549                                                 hdev->name, urb, -err);
 550                 usb_unanchor_urb(urb);
 551         }
 552 }
 553
 554 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 555 {
 556         int i, offset = 0;
 557
 558         BT_DBG("len %d mtu %d", len, mtu);
 559
 560         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 561                                         i++, offset += mtu, len -= mtu) {
 562                 urb->iso_frame_desc[i].offset = offset;
 563                 urb->iso_frame_desc[i].length = mtu;
 564         }
 565
 566         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 567                 urb->iso_frame_desc[i].offset = offset;
 568                 urb->iso_frame_desc[i].length = len;
 569                 i++;
 570         }
 571
 572         urb->number_of_packets = i;
 573 }
 574
 575 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 576 {
 577         struct btusb_data *data = hdev->driver_data;
 578         struct urb *urb;
 579         unsigned char *buf;
 580         unsigned int pipe;
 581         int err, size;
 582
 583         BT_DBG("%s", hdev->name);
 584
 585         if (!data->isoc_rx_ep)
 586                 return -ENODEV;
 587
 588         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 589         if (!urb)
 590                 return -ENOMEM;
 591
 592         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 593                                                 BTUSB_MAX_ISOC_FRAMES;
 594
 595         buf = kmalloc(size, mem_flags);
 596         if (!buf) {
 597                 usb_free_urb(urb);
 598                 return -ENOMEM;
 599         }
 600
 601         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 602
 603         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 604                                 hdev, data->isoc_rx_ep->bInterval);
 605
 606         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 607
 608         __fill_isoc_descriptor(urb, size,
 609                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 610
 611         usb_anchor_urb(urb, &data->isoc_anchor);
 612
 613         err = usb_submit_urb(urb, mem_flags);
 614         if (err < 0) {
 615                 BT_ERR("%s urb %p submission failed (%d)",
 616                                                 hdev->name, urb, -err);
 617                 usb_unanchor_urb(urb);
 618         }
 619
 620         usb_free_urb(urb);
 621
 622         return err;
 623 }
 624
 625 static void btusb_tx_complete(struct urb *urb)
 626 {
 627         struct sk_buff *skb = urb->context;
 628         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 629         struct btusb_data *data = hdev->driver_data;
 630
 631         BT_DBG("%s urb %p status %d count %d", hdev->name,
 632                                         urb, urb->status, urb->actual_length);
 633
 634         if (!test_bit(HCI_RUNNING, &hdev->flags))
 635                 goto done;
 636
 637         if (!urb->status)
 638                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 639         else
 640                 hdev->stat.err_tx++;
 641
 642 done:
 643         spin_lock(&data->txlock);
 644         data->tx_in_flight--;
 645         spin_unlock(&data->txlock);
 646
 647         kfree(urb->setup_packet);
 648
 649         kfree_skb(skb);
 650 }
 651
 652 static void btusb_isoc_tx_complete(struct urb *urb)
 653 {
 654         struct sk_buff *skb = urb->context;
 655         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 656
 657         BT_DBG("%s urb %p status %d count %d", hdev->name,
 658                                         urb, urb->status, urb->actual_length);
 659
 660         if (!test_bit(HCI_RUNNING, &hdev->flags))
 661                 goto done;
 662
 663         if (!urb->status)
 664                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 665         else
 666                 hdev->stat.err_tx++;
 667
 668 done:
 669         kfree(urb->setup_packet);
 670
 671         kfree_skb(skb);
 672 }
 673
 674 static int btusb_open(struct hci_dev *hdev)
 675 {
 676         struct btusb_data *data = hdev->driver_data;
 677         int err;
 678
 679         BT_DBG("%s", hdev->name);
 680
 681         err = usb_autopm_get_interface(data->intf);
 682         if (err < 0)
 683                 return err;
 684
 685         data->intf->needs_remote_wakeup = 1;
 686
 687         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 688                 goto done;
 689
 690         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 691                 goto done;
 692
 693         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 694         if (err < 0)
 695                 goto failed;
 696
 697         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 698         if (err < 0) {
 699                 usb_kill_anchored_urbs(&data->intr_anchor);
 700                 goto failed;
 701         }
 702
 703         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 704         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 705
 706 done:
 707         usb_autopm_put_interface(data->intf);
 708         return 0;
 709
 710 failed:
 711         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 712         clear_bit(HCI_RUNNING, &hdev->flags);
 713         usb_autopm_put_interface(data->intf);
 714         return err;
 715 }
 716
 717 static void btusb_stop_traffic(struct btusb_data *data)
 718 {
 719         usb_kill_anchored_urbs(&data->intr_anchor);
 720         usb_kill_anchored_urbs(&data->bulk_anchor);
 721         usb_kill_anchored_urbs(&data->isoc_anchor);
 722 }
 723
 724 static int btusb_close(struct hci_dev *hdev)
 725 {
 726         struct btusb_data *data = hdev->driver_data;
 727         int err;
 728
 729         BT_DBG("%s", hdev->name);
 730
 731         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 732                 return 0;
 733
 734         cancel_work_sync(&data->work);
 735         cancel_work_sync(&data->waker);
 736
 737         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 738         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 739         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 740
 741         btusb_stop_traffic(data);
 742         err = usb_autopm_get_interface(data->intf);
 743         if (err < 0)
 744                 goto failed;
 745
 746         data->intf->needs_remote_wakeup = 0;
 747         usb_autopm_put_interface(data->intf);
 748
 749 failed:
 750         usb_scuttle_anchored_urbs(&data->deferred);
 751         return 0;
 752 }
 753
 754 static int btusb_flush(struct hci_dev *hdev)
 755 {
 756         struct btusb_data *data = hdev->driver_data;
 757
 758         BT_DBG("%s", hdev->name);
 759
 760         usb_kill_anchored_urbs(&data->tx_anchor);
 761
 762         return 0;
 763 }
 764
 765 static int btusb_send_frame(struct sk_buff *skb)
 766 {
 767         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 768         struct btusb_data *data = hdev->driver_data;
 769         struct usb_ctrlrequest *dr;
 770         struct urb *urb;
 771         unsigned int pipe;
 772         int err;
 773
 774         BT_DBG("%s", hdev->name);
 775
 776         if (!test_bit(HCI_RUNNING, &hdev->flags))
 777                 return -EBUSY;
 778
 779         switch (bt_cb(skb)->pkt_type) {
 780         case HCI_COMMAND_PKT:
 781                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 782                 if (!urb)
 783                         return -ENOMEM;
 784
 785                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 786                 if (!dr) {
 787                         usb_free_urb(urb);
 788                         return -ENOMEM;
 789                 }
 790
 791                 dr->bRequestType = data->cmdreq_type;
 792                 dr->bRequest     = 0;
 793                 dr->wIndex       = 0;
 794                 dr->wValue       = 0;
 795                 dr->wLength      = __cpu_to_le16(skb->len);
 796
 797                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 798
 799                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 800                                 skb->data, skb->len, btusb_tx_complete, skb);
 801
 802                 hdev->stat.cmd_tx++;
 803                 break;
 804
 805         case HCI_ACLDATA_PKT:
 806                 if (!data->bulk_tx_ep)
 807                         return -ENODEV;
 808
 809                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 810                 if (!urb)
 811                         return -ENOMEM;
 812
 813                 pipe = usb_sndbulkpipe(data->udev,
 814                                         data->bulk_tx_ep->bEndpointAddress);
 815
 816                 usb_fill_bulk_urb(urb, data->udev, pipe,
 817                                 skb->data, skb->len, btusb_tx_complete, skb);
 818
 819                 hdev->stat.acl_tx++;
 820                 break;
 821
 822         case HCI_SCODATA_PKT:
 823                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 824                         return -ENODEV;
 825
 826                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 827                 if (!urb)
 828                         return -ENOMEM;
 829
 830                 pipe = usb_sndisocpipe(data->udev,
 831                                         data->isoc_tx_ep->bEndpointAddress);
 832
 833                 usb_fill_int_urb(urb, data->udev, pipe,
 834                                 skb->data, skb->len, btusb_isoc_tx_complete,
 835                                 skb, data->isoc_tx_ep->bInterval);
 836
 837                 urb->transfer_flags  = URB_ISO_ASAP;
 838
 839                 __fill_isoc_descriptor(urb, skb->len,
 840                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 841
 842                 hdev->stat.sco_tx++;
 843                 goto skip_waking;
 844
 845         default:
 846                 return -EILSEQ;
 847         }
 848
 849         err = inc_tx(data);
 850         if (err) {
 851                 usb_anchor_urb(urb, &data->deferred);
 852                 schedule_work(&data->waker);
 853                 err = 0;
 854                 goto done;
 855         }
 856
 857 skip_waking:
 858         usb_anchor_urb(urb, &data->tx_anchor);
 859
 860         err = usb_submit_urb(urb, GFP_ATOMIC);
 861         if (err < 0) {
 862                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 863                 kfree(urb->setup_packet);
 864                 usb_unanchor_urb(urb);
 865         } else {
 866                 usb_mark_last_busy(data->udev);
 867         }
 868
 869 done:
 870         usb_free_urb(urb);
 871         return err;
 872 }
 873
 874 static void btusb_destruct(struct hci_dev *hdev)
 875 {
 876         struct btusb_data *data = hdev->driver_data;
 877
 878         BT_DBG("%s", hdev->name);
 879
 880         kfree(data);
 881 }
 882
 883 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 884 {
 885         struct btusb_data *data = hdev->driver_data;
 886
 887         BT_DBG("%s evt %d", hdev->name, evt);
 888
 889         if (hdev->conn_hash.sco_num != data->sco_num) {
 890                 data->sco_num = hdev->conn_hash.sco_num;
 891                 schedule_work(&data->work);
 892         }
 893 }
 894
 895 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 896 {
 897         struct btusb_data *data = hdev->driver_data;
 898         struct usb_interface *intf = data->isoc;
 899         struct usb_endpoint_descriptor *ep_desc;
 900         int i, err;
 901
 902         if (!data->isoc)
 903                 return -ENODEV;
 904
 905         err = usb_set_interface(data->udev, 1, altsetting);
 906         if (err < 0) {
 907                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 908                 return err;
 909         }
 910
 911         data->isoc_altsetting = altsetting;
 912
 913         data->isoc_tx_ep = NULL;
 914         data->isoc_rx_ep = NULL;
 915
 916         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 917                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 918
 919                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 920                         data->isoc_tx_ep = ep_desc;
 921                         continue;
 922                 }
 923
 924                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 925                         data->isoc_rx_ep = ep_desc;
 926                         continue;
 927                 }
 928         }
 929
 930         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 931                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 932                 return -ENODEV;
 933         }
 934
 935         return 0;
 936 }
 937
 938 static void btusb_work(struct work_struct *work)
 939 {
 940         struct btusb_data *data = container_of(work, struct btusb_data, work);
 941         struct hci_dev *hdev = data->hdev;
 942         int err;
 943
 944         if (hdev->conn_hash.sco_num > 0) {
 945                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 946                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 947                         if (err < 0) {
 948                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 949                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 950                                 return;
 951                         }
 952
 953                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 954                 }
 955                 if (data->isoc_altsetting != 2) {
 956                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 957                         usb_kill_anchored_urbs(&data->isoc_anchor);
 958
 959                         if (__set_isoc_interface(hdev, 2) < 0)
 960                                 return;
 961                 }
 962
 963                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 964                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 965                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 966                         else
 967                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 968                 }
 969         } else {
 970                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 971                 usb_kill_anchored_urbs(&data->isoc_anchor);
 972
 973                 __set_isoc_interface(hdev, 0);
 974                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 975                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 976         }
 977 }
 978
 979 static void btusb_waker(struct work_struct *work)
 980 {
 981         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 982         int err;
 983
 984         err = usb_autopm_get_interface(data->intf);
 985         if (err < 0)
 986                 return;
 987
 988         usb_autopm_put_interface(data->intf);
 989 }
 990
 991 static int btusb_probe(struct usb_interface *intf,
 992                                 const struct usb_device_id *id)
 993 {
 994         struct usb_endpoint_descriptor *ep_desc;
 995         struct btusb_data *data;
 996         struct hci_dev *hdev;
 997         int i, err;
 998
 999         BT_DBG("intf %p id %p", intf, id);
1000
1001         /* interface numbers are hardcoded in the spec */
1002         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1003                 return -ENODEV;
1004
1005         if (!id->driver_info) {
1006                 const struct usb_device_id *match;
1007                 match = usb_match_id(intf, blacklist_table);
1008                 if (match)
1009                         id = match;
1010         }
1011
1012         if (id->driver_info == BTUSB_IGNORE)
1013                 return -ENODEV;
1014
1015         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1016                 return -ENODEV;
1017
1018         if (ignore_csr && id->driver_info & BTUSB_CSR)
1019                 return -ENODEV;
1020
1021         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1022                 return -ENODEV;
1023
1024         if (id->driver_info & BTUSB_ATH3012) {
1025                 struct usb_device *udev = interface_to_usbdev(intf);
1026
1027                 /* Old firmware would otherwise let ath3k driver load
1028                  * patch and sysconfig files */
1029                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1030                         return -ENODEV;
1031         }
1032
1033         data = kzalloc(sizeof(*data), GFP_KERNEL);
1034         if (!data)
1035                 return -ENOMEM;
1036
1037         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1038                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1039
1040                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1041                         data->intr_ep = ep_desc;
1042                         continue;
1043                 }
1044
1045                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1046                         data->bulk_tx_ep = ep_desc;
1047                         continue;
1048                 }
1049
1050                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1051                         data->bulk_rx_ep = ep_desc;
1052                         continue;
1053                 }
1054         }
1055
1056         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1057                 kfree(data);
1058                 return -ENODEV;
1059         }
1060
1061         data->cmdreq_type = USB_TYPE_CLASS;
1062
1063         data->udev = interface_to_usbdev(intf);
1064         data->intf = intf;
1065
1066         spin_lock_init(&data->lock);
1067
1068         INIT_WORK(&data->work, btusb_work);
1069         INIT_WORK(&data->waker, btusb_waker);
1070         spin_lock_init(&data->txlock);
1071
1072         init_usb_anchor(&data->tx_anchor);
1073         init_usb_anchor(&data->intr_anchor);
1074         init_usb_anchor(&data->bulk_anchor);
1075         init_usb_anchor(&data->isoc_anchor);
1076         init_usb_anchor(&data->deferred);
1077
1078         hdev = hci_alloc_dev();
1079         if (!hdev) {
1080                 kfree(data);
1081                 return -ENOMEM;
1082         }
1083
1084         hdev->bus = HCI_USB;
1085         hdev->driver_data = data;
1086
1087         data->hdev = hdev;
1088
1089         SET_HCIDEV_DEV(hdev, &intf->dev);
1090
1091         hdev->open     = btusb_open;
1092         hdev->close    = btusb_close;
1093         hdev->flush    = btusb_flush;
1094         hdev->send     = btusb_send_frame;
1095         hdev->destruct = btusb_destruct;
1096         hdev->notify   = btusb_notify;
1097
1098         hdev->owner = THIS_MODULE;
1099
1100         if (id->driver_info & BTUSB_INTEL_BOOT)
1101                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1102
1103         /* Interface numbers are hardcoded in the specification */
1104         data->isoc = usb_ifnum_to_if(data->udev, 1);
1105
1106         if (!reset)
1107                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1108
1109         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1110                 if (!disable_scofix)
1111                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1112         }
1113
1114         if (id->driver_info & BTUSB_BROKEN_ISOC)
1115                 data->isoc = NULL;
1116
1117         if (id->driver_info & BTUSB_DIGIANSWER) {
1118                 data->cmdreq_type = USB_TYPE_VENDOR;
1119                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1120         }
1121
1122         if (id->driver_info & BTUSB_CSR) {
1123                 struct usb_device *udev = data->udev;
1124
1125                 /* Old firmware would otherwise execute USB reset */
1126                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1127                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1128         }
1129
1130         if (id->driver_info & BTUSB_SNIFFER) {
1131                 struct usb_device *udev = data->udev;
1132
1133                 /* New sniffer firmware has crippled HCI interface */
1134                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1135                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1136
1137                 data->isoc = NULL;
1138         }
1139
1140         if (id->driver_info & BTUSB_BCM92035) {
1141                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1142                 struct sk_buff *skb;
1143
1144                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1145                 if (skb) {
1146                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1147                         skb_queue_tail(&hdev->driver_init, skb);
1148                 }
1149         }
1150
1151         if (data->isoc) {
1152                 err = usb_driver_claim_interface(&btusb_driver,
1153                                                         data->isoc, data);
1154                 if (err < 0) {
1155                         hci_free_dev(hdev);
1156                         kfree(data);
1157                         return err;
1158                 }
1159         }
1160
1161         err = hci_register_dev(hdev);
1162         if (err < 0) {
1163                 hci_free_dev(hdev);
1164                 kfree(data);
1165                 return err;
1166         }
1167
1168         usb_set_intfdata(intf, data);
1169
1170         return 0;
1171 }
1172
1173 static void btusb_disconnect(struct usb_interface *intf)
1174 {
1175         struct btusb_data *data = usb_get_intfdata(intf);
1176         struct hci_dev *hdev;
1177
1178         BT_DBG("intf %p", intf);
1179
1180         if (!data)
1181                 return;
1182
1183         hdev = data->hdev;
1184
1185         __hci_dev_hold(hdev);
1186
1187         usb_set_intfdata(data->intf, NULL);
1188
1189         if (data->isoc)
1190                 usb_set_intfdata(data->isoc, NULL);
1191
1192         hci_unregister_dev(hdev);
1193
1194         if (intf == data->isoc)
1195                 usb_driver_release_interface(&btusb_driver, data->intf);
1196         else if (data->isoc)
1197                 usb_driver_release_interface(&btusb_driver, data->isoc);
1198
1199         __hci_dev_put(hdev);
1200
1201         hci_free_dev(hdev);
1202 }
1203
1204 #ifdef CONFIG_PM
1205 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1206 {
1207         struct btusb_data *data = usb_get_intfdata(intf);
1208
1209         BT_DBG("intf %p", intf);
1210
1211         if (data->suspend_count++)
1212                 return 0;
1213
1214         spin_lock_irq(&data->txlock);
1215         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1216                 set_bit(BTUSB_SUSPENDING, &data->flags);
1217                 spin_unlock_irq(&data->txlock);
1218         } else {
1219                 spin_unlock_irq(&data->txlock);
1220                 data->suspend_count--;
1221                 return -EBUSY;
1222         }
1223
1224         cancel_work_sync(&data->work);
1225
1226         btusb_stop_traffic(data);
1227         usb_kill_anchored_urbs(&data->tx_anchor);
1228
1229         return 0;
1230 }
1231
1232 static void play_deferred(struct btusb_data *data)
1233 {
1234         struct urb *urb;
1235         int err;
1236
1237         while ((urb = usb_get_from_anchor(&data->deferred))) {
1238                 err = usb_submit_urb(urb, GFP_ATOMIC);
1239                 if (err < 0)
1240                         break;
1241
1242                 data->tx_in_flight++;
1243         }
1244         usb_scuttle_anchored_urbs(&data->deferred);
1245 }
1246
1247 static int btusb_resume(struct usb_interface *intf)
1248 {
1249         struct btusb_data *data = usb_get_intfdata(intf);
1250         struct hci_dev *hdev = data->hdev;
1251         int err = 0;
1252
1253         BT_DBG("intf %p", intf);
1254
1255         if (--data->suspend_count)
1256                 return 0;
1257
1258         if (!test_bit(HCI_RUNNING, &hdev->flags))
1259                 goto done;
1260
1261         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1262                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1263                 if (err < 0) {
1264                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1265                         goto failed;
1266                 }
1267         }
1268
1269         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1270                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1271                 if (err < 0) {
1272                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1273                         goto failed;
1274                 }
1275
1276                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1277         }
1278
1279         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1280                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1281                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1282                 else
1283                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1284         }
1285
1286         spin_lock_irq(&data->txlock);
1287         play_deferred(data);
1288         clear_bit(BTUSB_SUSPENDING, &data->flags);
1289         spin_unlock_irq(&data->txlock);
1290         schedule_work(&data->work);
1291
1292         return 0;
1293
1294 failed:
1295         usb_scuttle_anchored_urbs(&data->deferred);
1296 done:
1297         spin_lock_irq(&data->txlock);
1298         clear_bit(BTUSB_SUSPENDING, &data->flags);
1299         spin_unlock_irq(&data->txlock);
1300
1301         return err;
1302 }
1303 #endif
1304
1305 static struct usb_driver btusb_driver = {
1306         .name           = "btusb",
1307         .probe          = btusb_probe,
1308         .disconnect     = btusb_disconnect,
1309 #ifdef CONFIG_PM
1310         .suspend        = btusb_suspend,
1311         .resume         = btusb_resume,
1312 #endif
1313         .id_table       = btusb_table,
1314         .supports_autosuspend = 1,
1315 };
1316
1317 static int __init btusb_init(void)
1318 {
1319         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1320
1321         return usb_register(&btusb_driver);
1322 }
1323
1324 static void __exit btusb_exit(void)
1325 {
1326         usb_deregister(&btusb_driver);
1327 }
1328
1329 module_init(btusb_init);
1330 module_exit(btusb_exit);
1331
1332 module_param(ignore_dga, bool, 0644);
1333 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1334
1335 module_param(ignore_csr, bool, 0644);
1336 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1337
1338 module_param(ignore_sniffer, bool, 0644);
1339 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1340
1341 module_param(disable_scofix, bool, 0644);
1342 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1343
1344 module_param(force_scofix, bool, 0644);
1345 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1346
1347 module_param(reset, bool, 0644);
1348 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1349
1350 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1351 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1352 MODULE_VERSION(VERSION);
1353 MODULE_LICENSE("GPL");