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/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27
  28 #include <net/bluetooth/bluetooth.h>
  29 #include <net/bluetooth/hci_core.h>
  30
  31 #define VERSION "0.6"
  32
  33 static bool disable_scofix;
  34 static bool force_scofix;
  35
  36 static bool reset = 1;
  37
  38 static struct usb_driver btusb_driver;
  39
  40 #define BTUSB_IGNORE            0x01
  41 #define BTUSB_DIGIANSWER        0x02
  42 #define BTUSB_CSR               0x04
  43 #define BTUSB_SNIFFER           0x08
  44 #define BTUSB_BCM92035          0x10
  45 #define BTUSB_BROKEN_ISOC       0x20
  46 #define BTUSB_WRONG_SCO_MTU     0x40
  47 #define BTUSB_ATH3012           0x80
  48 #define BTUSB_INTEL             0x100
  49 #define BTUSB_INTEL_BOOT        0x200
  50 #define BTUSB_BCM_PATCHRAM      0x400
  51 #define BTUSB_MARVELL           0x800
  52
  53 static const struct usb_device_id btusb_table[] = {
  54         /* Generic Bluetooth USB device */
  55         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  56
  57         /* Apple-specific (Broadcom) devices */
  58         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  59
  60         /* MediaTek MT76x0E */
  61         { USB_DEVICE(0x0e8d, 0x763f) },
  62
  63         /* Broadcom SoftSailing reporting vendor specific */
  64         { USB_DEVICE(0x0a5c, 0x21e1) },
  65
  66         /* Apple MacBookPro 7,1 */
  67         { USB_DEVICE(0x05ac, 0x8213) },
  68
  69         /* Apple iMac11,1 */
  70         { USB_DEVICE(0x05ac, 0x8215) },
  71
  72         /* Apple MacBookPro6,2 */
  73         { USB_DEVICE(0x05ac, 0x8218) },
  74
  75         /* Apple MacBookAir3,1, MacBookAir3,2 */
  76         { USB_DEVICE(0x05ac, 0x821b) },
  77
  78         /* Apple MacBookAir4,1 */
  79         { USB_DEVICE(0x05ac, 0x821f) },
  80
  81         /* Apple MacBookPro8,2 */
  82         { USB_DEVICE(0x05ac, 0x821a) },
  83
  84         /* Apple MacMini5,1 */
  85         { USB_DEVICE(0x05ac, 0x8281) },
  86
  87         /* AVM BlueFRITZ! USB v2.0 */
  88         { USB_DEVICE(0x057c, 0x3800) },
  89
  90         /* Bluetooth Ultraport Module from IBM */
  91         { USB_DEVICE(0x04bf, 0x030a) },
  92
  93         /* ALPS Modules with non-standard id */
  94         { USB_DEVICE(0x044e, 0x3001) },
  95         { USB_DEVICE(0x044e, 0x3002) },
  96
  97         /* Ericsson with non-standard id */
  98         { USB_DEVICE(0x0bdb, 0x1002) },
  99
 100         /* Canyon CN-BTU1 with HID interfaces */
 101         { USB_DEVICE(0x0c10, 0x0000) },
 102
 103         /* Broadcom BCM20702A0 */
 104         { USB_DEVICE(0x0489, 0xe042) },
 105         { USB_DEVICE(0x04ca, 0x2003) },
 106         { USB_DEVICE(0x0b05, 0x17b5) },
 107         { USB_DEVICE(0x0b05, 0x17cb) },
 108         { USB_DEVICE(0x413c, 0x8197) },
 109
 110         /* Foxconn - Hon Hai */
 111         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 112
 113         /* Broadcom devices with vendor specific id */
 114         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 115           .driver_info = BTUSB_BCM_PATCHRAM },
 116
 117         /* ASUSTek Computer - Broadcom based */
 118         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
 119
 120         /* Belkin F8065bf - Broadcom based */
 121         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 122
 123         /* IMC Networks - Broadcom based */
 124         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 125
 126         /* Intel Bluetooth USB Bootloader (RAM module) */
 127         { USB_DEVICE(0x8087, 0x0a5a),
 128           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 129
 130         { }     /* Terminating entry */
 131 };
 132
 133 MODULE_DEVICE_TABLE(usb, btusb_table);
 134
 135 static const struct usb_device_id blacklist_table[] = {
 136         /* CSR BlueCore devices */
 137         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 138
 139         /* Broadcom BCM2033 without firmware */
 140         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 141
 142         /* Atheros 3011 with sflash firmware */
 143         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 144         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 145         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 146         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 147         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 148         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 149
 150         /* Atheros AR9285 Malbec with sflash firmware */
 151         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 152
 153         /* Atheros 3012 with sflash firmware */
 154         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 186
 187         /* Atheros AR5BBU12 with sflash firmware */
 188         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 189
 190         /* Atheros AR5BBU12 with sflash firmware */
 191         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 193
 194         /* Broadcom BCM2035 */
 195         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 196         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 197         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 198
 199         /* Broadcom BCM2045 */
 200         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 201         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 202
 203         /* IBM/Lenovo ThinkPad with Broadcom chip */
 204         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 205         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 206
 207         /* HP laptop with Broadcom chip */
 208         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 209
 210         /* Dell laptop with Broadcom chip */
 211         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 212
 213         /* Dell Wireless 370 and 410 devices */
 214         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 215         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 216
 217         /* Belkin F8T012 and F8T013 devices */
 218         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 219         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 220
 221         /* Asus WL-BTD202 device */
 222         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 223
 224         /* Kensington Bluetooth USB adapter */
 225         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 226
 227         /* RTX Telecom based adapters with buggy SCO support */
 228         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 229         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 230
 231         /* CONWISE Technology based adapters with buggy SCO support */
 232         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 233
 234         /* Digianswer devices */
 235         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 236         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 237
 238         /* CSR BlueCore Bluetooth Sniffer */
 239         { USB_DEVICE(0x0a12, 0x0002),
 240           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 241
 242         /* Frontline ComProbe Bluetooth Sniffer */
 243         { USB_DEVICE(0x16d3, 0x0002),
 244           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 245
 246         /* Intel Bluetooth device */
 247         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 248         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 249
 250         /* Marvell device */
 251         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 252         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 253
 254         { }     /* Terminating entry */
 255 };
 256
 257 #define BTUSB_MAX_ISOC_FRAMES   10
 258
 259 #define BTUSB_INTR_RUNNING      0
 260 #define BTUSB_BULK_RUNNING      1
 261 #define BTUSB_ISOC_RUNNING      2
 262 #define BTUSB_SUSPENDING        3
 263 #define BTUSB_DID_ISO_RESUME    4
 264
 265 struct btusb_data {
 266         struct hci_dev       *hdev;
 267         struct usb_device    *udev;
 268         struct usb_interface *intf;
 269         struct usb_interface *isoc;
 270
 271         spinlock_t lock;
 272
 273         unsigned long flags;
 274
 275         struct work_struct work;
 276         struct work_struct waker;
 277
 278         struct usb_anchor tx_anchor;
 279         struct usb_anchor intr_anchor;
 280         struct usb_anchor bulk_anchor;
 281         struct usb_anchor isoc_anchor;
 282         struct usb_anchor deferred;
 283         int tx_in_flight;
 284         spinlock_t txlock;
 285
 286         struct usb_endpoint_descriptor *intr_ep;
 287         struct usb_endpoint_descriptor *bulk_tx_ep;
 288         struct usb_endpoint_descriptor *bulk_rx_ep;
 289         struct usb_endpoint_descriptor *isoc_tx_ep;
 290         struct usb_endpoint_descriptor *isoc_rx_ep;
 291
 292         __u8 cmdreq_type;
 293
 294         unsigned int sco_num;
 295         int isoc_altsetting;
 296         int suspend_count;
 297 };
 298
 299 static int inc_tx(struct btusb_data *data)
 300 {
 301         unsigned long flags;
 302         int rv;
 303
 304         spin_lock_irqsave(&data->txlock, flags);
 305         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 306         if (!rv)
 307                 data->tx_in_flight++;
 308         spin_unlock_irqrestore(&data->txlock, flags);
 309
 310         return rv;
 311 }
 312
 313 static void btusb_intr_complete(struct urb *urb)
 314 {
 315         struct hci_dev *hdev = urb->context;
 316         struct btusb_data *data = hci_get_drvdata(hdev);
 317         int err;
 318
 319         BT_DBG("%s urb %p status %d count %d", hdev->name,
 320                                         urb, urb->status, urb->actual_length);
 321
 322         if (!test_bit(HCI_RUNNING, &hdev->flags))
 323                 return;
 324
 325         if (urb->status == 0) {
 326                 hdev->stat.byte_rx += urb->actual_length;
 327
 328                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 329                                                 urb->transfer_buffer,
 330                                                 urb->actual_length) < 0) {
 331                         BT_ERR("%s corrupted event packet", hdev->name);
 332                         hdev->stat.err_rx++;
 333                 }
 334         }
 335
 336         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 337                 return;
 338
 339         usb_mark_last_busy(data->udev);
 340         usb_anchor_urb(urb, &data->intr_anchor);
 341
 342         err = usb_submit_urb(urb, GFP_ATOMIC);
 343         if (err < 0) {
 344                 /* -EPERM: urb is being killed;
 345                  * -ENODEV: device got disconnected */
 346                 if (err != -EPERM && err != -ENODEV)
 347                         BT_ERR("%s urb %p failed to resubmit (%d)",
 348                                                 hdev->name, urb, -err);
 349                 usb_unanchor_urb(urb);
 350         }
 351 }
 352
 353 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 354 {
 355         struct btusb_data *data = hci_get_drvdata(hdev);
 356         struct urb *urb;
 357         unsigned char *buf;
 358         unsigned int pipe;
 359         int err, size;
 360
 361         BT_DBG("%s", hdev->name);
 362
 363         if (!data->intr_ep)
 364                 return -ENODEV;
 365
 366         urb = usb_alloc_urb(0, mem_flags);
 367         if (!urb)
 368                 return -ENOMEM;
 369
 370         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 371
 372         buf = kmalloc(size, mem_flags);
 373         if (!buf) {
 374                 usb_free_urb(urb);
 375                 return -ENOMEM;
 376         }
 377
 378         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 379
 380         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 381                                                 btusb_intr_complete, hdev,
 382                                                 data->intr_ep->bInterval);
 383
 384         urb->transfer_flags |= URB_FREE_BUFFER;
 385
 386         usb_anchor_urb(urb, &data->intr_anchor);
 387
 388         err = usb_submit_urb(urb, mem_flags);
 389         if (err < 0) {
 390                 if (err != -EPERM && err != -ENODEV)
 391                         BT_ERR("%s urb %p submission failed (%d)",
 392                                                 hdev->name, urb, -err);
 393                 usb_unanchor_urb(urb);
 394         }
 395
 396         usb_free_urb(urb);
 397
 398         return err;
 399 }
 400
 401 static void btusb_bulk_complete(struct urb *urb)
 402 {
 403         struct hci_dev *hdev = urb->context;
 404         struct btusb_data *data = hci_get_drvdata(hdev);
 405         int err;
 406
 407         BT_DBG("%s urb %p status %d count %d", hdev->name,
 408                                         urb, urb->status, urb->actual_length);
 409
 410         if (!test_bit(HCI_RUNNING, &hdev->flags))
 411                 return;
 412
 413         if (urb->status == 0) {
 414                 hdev->stat.byte_rx += urb->actual_length;
 415
 416                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 417                                                 urb->transfer_buffer,
 418                                                 urb->actual_length) < 0) {
 419                         BT_ERR("%s corrupted ACL packet", hdev->name);
 420                         hdev->stat.err_rx++;
 421                 }
 422         }
 423
 424         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 425                 return;
 426
 427         usb_anchor_urb(urb, &data->bulk_anchor);
 428         usb_mark_last_busy(data->udev);
 429
 430         err = usb_submit_urb(urb, GFP_ATOMIC);
 431         if (err < 0) {
 432                 /* -EPERM: urb is being killed;
 433                  * -ENODEV: device got disconnected */
 434                 if (err != -EPERM && err != -ENODEV)
 435                         BT_ERR("%s urb %p failed to resubmit (%d)",
 436                                                 hdev->name, urb, -err);
 437                 usb_unanchor_urb(urb);
 438         }
 439 }
 440
 441 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 442 {
 443         struct btusb_data *data = hci_get_drvdata(hdev);
 444         struct urb *urb;
 445         unsigned char *buf;
 446         unsigned int pipe;
 447         int err, size = HCI_MAX_FRAME_SIZE;
 448
 449         BT_DBG("%s", hdev->name);
 450
 451         if (!data->bulk_rx_ep)
 452                 return -ENODEV;
 453
 454         urb = usb_alloc_urb(0, mem_flags);
 455         if (!urb)
 456                 return -ENOMEM;
 457
 458         buf = kmalloc(size, mem_flags);
 459         if (!buf) {
 460                 usb_free_urb(urb);
 461                 return -ENOMEM;
 462         }
 463
 464         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 465
 466         usb_fill_bulk_urb(urb, data->udev, pipe,
 467                                         buf, size, btusb_bulk_complete, hdev);
 468
 469         urb->transfer_flags |= URB_FREE_BUFFER;
 470
 471         usb_mark_last_busy(data->udev);
 472         usb_anchor_urb(urb, &data->bulk_anchor);
 473
 474         err = usb_submit_urb(urb, mem_flags);
 475         if (err < 0) {
 476                 if (err != -EPERM && err != -ENODEV)
 477                         BT_ERR("%s urb %p submission failed (%d)",
 478                                                 hdev->name, urb, -err);
 479                 usb_unanchor_urb(urb);
 480         }
 481
 482         usb_free_urb(urb);
 483
 484         return err;
 485 }
 486
 487 static void btusb_isoc_complete(struct urb *urb)
 488 {
 489         struct hci_dev *hdev = urb->context;
 490         struct btusb_data *data = hci_get_drvdata(hdev);
 491         int i, err;
 492
 493         BT_DBG("%s urb %p status %d count %d", hdev->name,
 494                                         urb, urb->status, urb->actual_length);
 495
 496         if (!test_bit(HCI_RUNNING, &hdev->flags))
 497                 return;
 498
 499         if (urb->status == 0) {
 500                 for (i = 0; i < urb->number_of_packets; i++) {
 501                         unsigned int offset = urb->iso_frame_desc[i].offset;
 502                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 503
 504                         if (urb->iso_frame_desc[i].status)
 505                                 continue;
 506
 507                         hdev->stat.byte_rx += length;
 508
 509                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 510                                                 urb->transfer_buffer + offset,
 511                                                                 length) < 0) {
 512                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 513                                 hdev->stat.err_rx++;
 514                         }
 515                 }
 516         }
 517
 518         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 519                 return;
 520
 521         usb_anchor_urb(urb, &data->isoc_anchor);
 522
 523         err = usb_submit_urb(urb, GFP_ATOMIC);
 524         if (err < 0) {
 525                 /* -EPERM: urb is being killed;
 526                  * -ENODEV: device got disconnected */
 527                 if (err != -EPERM && err != -ENODEV)
 528                         BT_ERR("%s urb %p failed to resubmit (%d)",
 529                                                 hdev->name, urb, -err);
 530                 usb_unanchor_urb(urb);
 531         }
 532 }
 533
 534 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 535 {
 536         int i, offset = 0;
 537
 538         BT_DBG("len %d mtu %d", len, mtu);
 539
 540         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 541                                         i++, offset += mtu, len -= mtu) {
 542                 urb->iso_frame_desc[i].offset = offset;
 543                 urb->iso_frame_desc[i].length = mtu;
 544         }
 545
 546         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 547                 urb->iso_frame_desc[i].offset = offset;
 548                 urb->iso_frame_desc[i].length = len;
 549                 i++;
 550         }
 551
 552         urb->number_of_packets = i;
 553 }
 554
 555 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 556 {
 557         struct btusb_data *data = hci_get_drvdata(hdev);
 558         struct urb *urb;
 559         unsigned char *buf;
 560         unsigned int pipe;
 561         int err, size;
 562
 563         BT_DBG("%s", hdev->name);
 564
 565         if (!data->isoc_rx_ep)
 566                 return -ENODEV;
 567
 568         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 569         if (!urb)
 570                 return -ENOMEM;
 571
 572         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 573                                                 BTUSB_MAX_ISOC_FRAMES;
 574
 575         buf = kmalloc(size, mem_flags);
 576         if (!buf) {
 577                 usb_free_urb(urb);
 578                 return -ENOMEM;
 579         }
 580
 581         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 582
 583         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 584                                 hdev, data->isoc_rx_ep->bInterval);
 585
 586         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 587
 588         __fill_isoc_descriptor(urb, size,
 589                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 590
 591         usb_anchor_urb(urb, &data->isoc_anchor);
 592
 593         err = usb_submit_urb(urb, mem_flags);
 594         if (err < 0) {
 595                 if (err != -EPERM && err != -ENODEV)
 596                         BT_ERR("%s urb %p submission failed (%d)",
 597                                                 hdev->name, urb, -err);
 598                 usb_unanchor_urb(urb);
 599         }
 600
 601         usb_free_urb(urb);
 602
 603         return err;
 604 }
 605
 606 static void btusb_tx_complete(struct urb *urb)
 607 {
 608         struct sk_buff *skb = urb->context;
 609         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 610         struct btusb_data *data = hci_get_drvdata(hdev);
 611
 612         BT_DBG("%s urb %p status %d count %d", hdev->name,
 613                                         urb, urb->status, urb->actual_length);
 614
 615         if (!test_bit(HCI_RUNNING, &hdev->flags))
 616                 goto done;
 617
 618         if (!urb->status)
 619                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 620         else
 621                 hdev->stat.err_tx++;
 622
 623 done:
 624         spin_lock(&data->txlock);
 625         data->tx_in_flight--;
 626         spin_unlock(&data->txlock);
 627
 628         kfree(urb->setup_packet);
 629
 630         kfree_skb(skb);
 631 }
 632
 633 static void btusb_isoc_tx_complete(struct urb *urb)
 634 {
 635         struct sk_buff *skb = urb->context;
 636         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 637
 638         BT_DBG("%s urb %p status %d count %d", hdev->name,
 639                                         urb, urb->status, urb->actual_length);
 640
 641         if (!test_bit(HCI_RUNNING, &hdev->flags))
 642                 goto done;
 643
 644         if (!urb->status)
 645                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 646         else
 647                 hdev->stat.err_tx++;
 648
 649 done:
 650         kfree(urb->setup_packet);
 651
 652         kfree_skb(skb);
 653 }
 654
 655 static int btusb_open(struct hci_dev *hdev)
 656 {
 657         struct btusb_data *data = hci_get_drvdata(hdev);
 658         int err;
 659
 660         BT_DBG("%s", hdev->name);
 661
 662         err = usb_autopm_get_interface(data->intf);
 663         if (err < 0)
 664                 return err;
 665
 666         data->intf->needs_remote_wakeup = 1;
 667
 668         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 669                 goto done;
 670
 671         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 672                 goto done;
 673
 674         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 675         if (err < 0)
 676                 goto failed;
 677
 678         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 679         if (err < 0) {
 680                 usb_kill_anchored_urbs(&data->intr_anchor);
 681                 goto failed;
 682         }
 683
 684         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 685         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 686
 687 done:
 688         usb_autopm_put_interface(data->intf);
 689         return 0;
 690
 691 failed:
 692         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 693         clear_bit(HCI_RUNNING, &hdev->flags);
 694         usb_autopm_put_interface(data->intf);
 695         return err;
 696 }
 697
 698 static void btusb_stop_traffic(struct btusb_data *data)
 699 {
 700         usb_kill_anchored_urbs(&data->intr_anchor);
 701         usb_kill_anchored_urbs(&data->bulk_anchor);
 702         usb_kill_anchored_urbs(&data->isoc_anchor);
 703 }
 704
 705 static int btusb_close(struct hci_dev *hdev)
 706 {
 707         struct btusb_data *data = hci_get_drvdata(hdev);
 708         int err;
 709
 710         BT_DBG("%s", hdev->name);
 711
 712         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 713                 return 0;
 714
 715         cancel_work_sync(&data->work);
 716         cancel_work_sync(&data->waker);
 717
 718         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 719         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 720         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 721
 722         btusb_stop_traffic(data);
 723         err = usb_autopm_get_interface(data->intf);
 724         if (err < 0)
 725                 goto failed;
 726
 727         data->intf->needs_remote_wakeup = 0;
 728         usb_autopm_put_interface(data->intf);
 729
 730 failed:
 731         usb_scuttle_anchored_urbs(&data->deferred);
 732         return 0;
 733 }
 734
 735 static int btusb_flush(struct hci_dev *hdev)
 736 {
 737         struct btusb_data *data = hci_get_drvdata(hdev);
 738
 739         BT_DBG("%s", hdev->name);
 740
 741         usb_kill_anchored_urbs(&data->tx_anchor);
 742
 743         return 0;
 744 }
 745
 746 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 747 {
 748         struct btusb_data *data = hci_get_drvdata(hdev);
 749         struct usb_ctrlrequest *dr;
 750         struct urb *urb;
 751         unsigned int pipe;
 752         int err;
 753
 754         BT_DBG("%s", hdev->name);
 755
 756         if (!test_bit(HCI_RUNNING, &hdev->flags))
 757                 return -EBUSY;
 758
 759         skb->dev = (void *) hdev;
 760
 761         switch (bt_cb(skb)->pkt_type) {
 762         case HCI_COMMAND_PKT:
 763                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 764                 if (!urb)
 765                         return -ENOMEM;
 766
 767                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 768                 if (!dr) {
 769                         usb_free_urb(urb);
 770                         return -ENOMEM;
 771                 }
 772
 773                 dr->bRequestType = data->cmdreq_type;
 774                 dr->bRequest     = 0;
 775                 dr->wIndex       = 0;
 776                 dr->wValue       = 0;
 777                 dr->wLength      = __cpu_to_le16(skb->len);
 778
 779                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 780
 781                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 782                                 skb->data, skb->len, btusb_tx_complete, skb);
 783
 784                 hdev->stat.cmd_tx++;
 785                 break;
 786
 787         case HCI_ACLDATA_PKT:
 788                 if (!data->bulk_tx_ep)
 789                         return -ENODEV;
 790
 791                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 792                 if (!urb)
 793                         return -ENOMEM;
 794
 795                 pipe = usb_sndbulkpipe(data->udev,
 796                                         data->bulk_tx_ep->bEndpointAddress);
 797
 798                 usb_fill_bulk_urb(urb, data->udev, pipe,
 799                                 skb->data, skb->len, btusb_tx_complete, skb);
 800
 801                 hdev->stat.acl_tx++;
 802                 break;
 803
 804         case HCI_SCODATA_PKT:
 805                 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
 806                         return -ENODEV;
 807
 808                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 809                 if (!urb)
 810                         return -ENOMEM;
 811
 812                 pipe = usb_sndisocpipe(data->udev,
 813                                         data->isoc_tx_ep->bEndpointAddress);
 814
 815                 usb_fill_int_urb(urb, data->udev, pipe,
 816                                 skb->data, skb->len, btusb_isoc_tx_complete,
 817                                 skb, data->isoc_tx_ep->bInterval);
 818
 819                 urb->transfer_flags  = URB_ISO_ASAP;
 820
 821                 __fill_isoc_descriptor(urb, skb->len,
 822                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 823
 824                 hdev->stat.sco_tx++;
 825                 goto skip_waking;
 826
 827         default:
 828                 return -EILSEQ;
 829         }
 830
 831         err = inc_tx(data);
 832         if (err) {
 833                 usb_anchor_urb(urb, &data->deferred);
 834                 schedule_work(&data->waker);
 835                 err = 0;
 836                 goto done;
 837         }
 838
 839 skip_waking:
 840         usb_anchor_urb(urb, &data->tx_anchor);
 841
 842         err = usb_submit_urb(urb, GFP_ATOMIC);
 843         if (err < 0) {
 844                 if (err != -EPERM && err != -ENODEV)
 845                         BT_ERR("%s urb %p submission failed (%d)",
 846                                                 hdev->name, urb, -err);
 847                 kfree(urb->setup_packet);
 848                 usb_unanchor_urb(urb);
 849         } else {
 850                 usb_mark_last_busy(data->udev);
 851         }
 852
 853 done:
 854         usb_free_urb(urb);
 855         return err;
 856 }
 857
 858 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 859 {
 860         struct btusb_data *data = hci_get_drvdata(hdev);
 861
 862         BT_DBG("%s evt %d", hdev->name, evt);
 863
 864         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
 865                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
 866                 schedule_work(&data->work);
 867         }
 868 }
 869
 870 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 871 {
 872         struct btusb_data *data = hci_get_drvdata(hdev);
 873         struct usb_interface *intf = data->isoc;
 874         struct usb_endpoint_descriptor *ep_desc;
 875         int i, err;
 876
 877         if (!data->isoc)
 878                 return -ENODEV;
 879
 880         err = usb_set_interface(data->udev, 1, altsetting);
 881         if (err < 0) {
 882                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 883                 return err;
 884         }
 885
 886         data->isoc_altsetting = altsetting;
 887
 888         data->isoc_tx_ep = NULL;
 889         data->isoc_rx_ep = NULL;
 890
 891         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 892                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 893
 894                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 895                         data->isoc_tx_ep = ep_desc;
 896                         continue;
 897                 }
 898
 899                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 900                         data->isoc_rx_ep = ep_desc;
 901                         continue;
 902                 }
 903         }
 904
 905         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 906                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 907                 return -ENODEV;
 908         }
 909
 910         return 0;
 911 }
 912
 913 static void btusb_work(struct work_struct *work)
 914 {
 915         struct btusb_data *data = container_of(work, struct btusb_data, work);
 916         struct hci_dev *hdev = data->hdev;
 917         int new_alts;
 918         int err;
 919
 920         if (data->sco_num > 0) {
 921                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 922                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 923                         if (err < 0) {
 924                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 925                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 926                                 return;
 927                         }
 928
 929                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 930                 }
 931
 932                 if (hdev->voice_setting & 0x0020) {
 933                         static const int alts[3] = { 2, 4, 5 };
 934                         new_alts = alts[data->sco_num - 1];
 935                 } else {
 936                         new_alts = data->sco_num;
 937                 }
 938
 939                 if (data->isoc_altsetting != new_alts) {
 940                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 941                         usb_kill_anchored_urbs(&data->isoc_anchor);
 942
 943                         if (__set_isoc_interface(hdev, new_alts) < 0)
 944                                 return;
 945                 }
 946
 947                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 948                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 949                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 950                         else
 951                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 952                 }
 953         } else {
 954                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 955                 usb_kill_anchored_urbs(&data->isoc_anchor);
 956
 957                 __set_isoc_interface(hdev, 0);
 958                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 959                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 960         }
 961 }
 962
 963 static void btusb_waker(struct work_struct *work)
 964 {
 965         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 966         int err;
 967
 968         err = usb_autopm_get_interface(data->intf);
 969         if (err < 0)
 970                 return;
 971
 972         usb_autopm_put_interface(data->intf);
 973 }
 974
 975 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 976 {
 977         struct sk_buff *skb;
 978         u8 val = 0x00;
 979
 980         BT_DBG("%s", hdev->name);
 981
 982         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 983         if (IS_ERR(skb))
 984                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 985         else
 986                 kfree_skb(skb);
 987
 988         return 0;
 989 }
 990
 991 static int btusb_setup_csr(struct hci_dev *hdev)
 992 {
 993         struct hci_rp_read_local_version *rp;
 994         struct sk_buff *skb;
 995         int ret;
 996
 997         BT_DBG("%s", hdev->name);
 998
 999         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1000                              HCI_INIT_TIMEOUT);
1001         if (IS_ERR(skb)) {
1002                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
1003                 return -PTR_ERR(skb);
1004         }
1005
1006         rp = (struct hci_rp_read_local_version *) skb->data;
1007
1008         if (!rp->status) {
1009                 if (le16_to_cpu(rp->manufacturer) != 10) {
1010                         /* Clear the reset quirk since this is not an actual
1011                          * early Bluetooth 1.1 device from CSR.
1012                          */
1013                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1014
1015                         /* These fake CSR controllers have all a broken
1016                          * stored link key handling and so just disable it.
1017                          */
1018                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1019                                 &hdev->quirks);
1020                 }
1021         }
1022
1023         ret = -bt_to_errno(rp->status);
1024
1025         kfree_skb(skb);
1026
1027         return ret;
1028 }
1029
1030 struct intel_version {
1031         u8 status;
1032         u8 hw_platform;
1033         u8 hw_variant;
1034         u8 hw_revision;
1035         u8 fw_variant;
1036         u8 fw_revision;
1037         u8 fw_build_num;
1038         u8 fw_build_ww;
1039         u8 fw_build_yy;
1040         u8 fw_patch_num;
1041 } __packed;
1042
1043 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1044                                                 struct intel_version *ver)
1045 {
1046         const struct firmware *fw;
1047         char fwname[64];
1048         int ret;
1049
1050         snprintf(fwname, sizeof(fwname),
1051                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1052                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1053                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1054                  ver->fw_build_ww, ver->fw_build_yy);
1055
1056         ret = request_firmware(&fw, fwname, &hdev->dev);
1057         if (ret < 0) {
1058                 if (ret == -EINVAL) {
1059                         BT_ERR("%s Intel firmware file request failed (%d)",
1060                                hdev->name, ret);
1061                         return NULL;
1062                 }
1063
1064                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1065                        hdev->name, fwname, ret);
1066
1067                 /* If the correct firmware patch file is not found, use the
1068                  * default firmware patch file instead
1069                  */
1070                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1071                          ver->hw_platform, ver->hw_variant);
1072                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1073                         BT_ERR("%s failed to open default Intel fw file: %s",
1074                                hdev->name, fwname);
1075                         return NULL;
1076                 }
1077         }
1078
1079         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1080
1081         return fw;
1082 }
1083
1084 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1085                                       const struct firmware *fw,
1086                                       const u8 **fw_ptr, int *disable_patch)
1087 {
1088         struct sk_buff *skb;
1089         struct hci_command_hdr *cmd;
1090         const u8 *cmd_param;
1091         struct hci_event_hdr *evt = NULL;
1092         const u8 *evt_param = NULL;
1093         int remain = fw->size - (*fw_ptr - fw->data);
1094
1095         /* The first byte indicates the types of the patch command or event.
1096          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1097          * in the current firmware buffer doesn't start with 0x01 or
1098          * the size of remain buffer is smaller than HCI command header,
1099          * the firmware file is corrupted and it should stop the patching
1100          * process.
1101          */
1102         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1103                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1104                 return -EINVAL;
1105         }
1106         (*fw_ptr)++;
1107         remain--;
1108
1109         cmd = (struct hci_command_hdr *)(*fw_ptr);
1110         *fw_ptr += sizeof(*cmd);
1111         remain -= sizeof(*cmd);
1112
1113         /* Ensure that the remain firmware data is long enough than the length
1114          * of command parameter. If not, the firmware file is corrupted.
1115          */
1116         if (remain < cmd->plen) {
1117                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1118                 return -EFAULT;
1119         }
1120
1121         /* If there is a command that loads a patch in the firmware
1122          * file, then enable the patch upon success, otherwise just
1123          * disable the manufacturer mode, for example patch activation
1124          * is not required when the default firmware patch file is used
1125          * because there are no patch data to load.
1126          */
1127         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1128                 *disable_patch = 0;
1129
1130         cmd_param = *fw_ptr;
1131         *fw_ptr += cmd->plen;
1132         remain -= cmd->plen;
1133
1134         /* This reads the expected events when the above command is sent to the
1135          * device. Some vendor commands expects more than one events, for
1136          * example command status event followed by vendor specific event.
1137          * For this case, it only keeps the last expected event. so the command
1138          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1139          * last expected event.
1140          */
1141         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1142                 (*fw_ptr)++;
1143                 remain--;
1144
1145                 evt = (struct hci_event_hdr *)(*fw_ptr);
1146                 *fw_ptr += sizeof(*evt);
1147                 remain -= sizeof(*evt);
1148
1149                 if (remain < evt->plen) {
1150                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1151                                hdev->name);
1152                         return -EFAULT;
1153                 }
1154
1155                 evt_param = *fw_ptr;
1156                 *fw_ptr += evt->plen;
1157                 remain -= evt->plen;
1158         }
1159
1160         /* Every HCI commands in the firmware file has its correspond event.
1161          * If event is not found or remain is smaller than zero, the firmware
1162          * file is corrupted.
1163          */
1164         if (!evt || !evt_param || remain < 0) {
1165                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1166                 return -EFAULT;
1167         }
1168
1169         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1170                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1171         if (IS_ERR(skb)) {
1172                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1173                        hdev->name, cmd->opcode, PTR_ERR(skb));
1174                 return PTR_ERR(skb);
1175         }
1176
1177         /* It ensures that the returned event matches the event data read from
1178          * the firmware file. At fist, it checks the length and then
1179          * the contents of the event.
1180          */
1181         if (skb->len != evt->plen) {
1182                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1183                        le16_to_cpu(cmd->opcode));
1184                 kfree_skb(skb);
1185                 return -EFAULT;
1186         }
1187
1188         if (memcmp(skb->data, evt_param, evt->plen)) {
1189                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1190                        hdev->name, le16_to_cpu(cmd->opcode));
1191                 kfree_skb(skb);
1192                 return -EFAULT;
1193         }
1194         kfree_skb(skb);
1195
1196         return 0;
1197 }
1198
1199 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1200
1201 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1202 {
1203         struct sk_buff *skb;
1204         struct hci_rp_read_bd_addr *rp;
1205
1206         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1207                              HCI_INIT_TIMEOUT);
1208         if (IS_ERR(skb)) {
1209                 BT_ERR("%s reading Intel device address failed (%ld)",
1210                        hdev->name, PTR_ERR(skb));
1211                 return PTR_ERR(skb);
1212         }
1213
1214         if (skb->len != sizeof(*rp)) {
1215                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1216                 kfree_skb(skb);
1217                 return -EIO;
1218         }
1219
1220         rp = (struct hci_rp_read_bd_addr *) skb->data;
1221         if (rp->status) {
1222                 BT_ERR("%s Intel device address result failed (%02x)",
1223                        hdev->name, rp->status);
1224                 kfree_skb(skb);
1225                 return -bt_to_errno(rp->status);
1226         }
1227
1228         /* For some Intel based controllers, the default Bluetooth device
1229          * address 00:03:19:9E:8B:00 can be found. These controllers are
1230          * fully operational, but have the danger of duplicate addresses
1231          * and that in turn can cause problems with Bluetooth operation.
1232          */
1233         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1234                 BT_ERR("%s found Intel default device address (%pMR)",
1235                        hdev->name, &rp->bdaddr);
1236                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1237         }
1238
1239         kfree_skb(skb);
1240
1241         return 0;
1242 }
1243
1244 static int btusb_setup_intel(struct hci_dev *hdev)
1245 {
1246         struct sk_buff *skb;
1247         const struct firmware *fw;
1248         const u8 *fw_ptr;
1249         int disable_patch;
1250         struct intel_version *ver;
1251
1252         const u8 mfg_enable[] = { 0x01, 0x00 };
1253         const u8 mfg_disable[] = { 0x00, 0x00 };
1254         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1255         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1256
1257         BT_DBG("%s", hdev->name);
1258
1259         /* The controller has a bug with the first HCI command sent to it
1260          * returning number of completed commands as zero. This would stall the
1261          * command processing in the Bluetooth core.
1262          *
1263          * As a workaround, send HCI Reset command first which will reset the
1264          * number of completed commands and allow normal command processing
1265          * from now on.
1266          */
1267         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1268         if (IS_ERR(skb)) {
1269                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1270                        hdev->name, PTR_ERR(skb));
1271                 return PTR_ERR(skb);
1272         }
1273         kfree_skb(skb);
1274
1275         /* Read Intel specific controller version first to allow selection of
1276          * which firmware file to load.
1277          *
1278          * The returned information are hardware variant and revision plus
1279          * firmware variant, revision and build number.
1280          */
1281         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1282         if (IS_ERR(skb)) {
1283                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1284                        hdev->name, PTR_ERR(skb));
1285                 return PTR_ERR(skb);
1286         }
1287
1288         if (skb->len != sizeof(*ver)) {
1289                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1290                 kfree_skb(skb);
1291                 return -EIO;
1292         }
1293
1294         ver = (struct intel_version *)skb->data;
1295         if (ver->status) {
1296                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1297                        ver->status);
1298                 kfree_skb(skb);
1299                 return -bt_to_errno(ver->status);
1300         }
1301
1302         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1303                 hdev->name, ver->hw_platform, ver->hw_variant,
1304                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1305                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1306                 ver->fw_patch_num);
1307
1308         /* fw_patch_num indicates the version of patch the device currently
1309          * have. If there is no patch data in the device, it is always 0x00.
1310          * So, if it is other than 0x00, no need to patch the deivce again.
1311          */
1312         if (ver->fw_patch_num) {
1313                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1314                         hdev->name, ver->fw_patch_num);
1315                 kfree_skb(skb);
1316                 btusb_check_bdaddr_intel(hdev);
1317                 return 0;
1318         }
1319
1320         /* Opens the firmware patch file based on the firmware version read
1321          * from the controller. If it fails to open the matching firmware
1322          * patch file, it tries to open the default firmware patch file.
1323          * If no patch file is found, allow the device to operate without
1324          * a patch.
1325          */
1326         fw = btusb_setup_intel_get_fw(hdev, ver);
1327         if (!fw) {
1328                 kfree_skb(skb);
1329                 btusb_check_bdaddr_intel(hdev);
1330                 return 0;
1331         }
1332         fw_ptr = fw->data;
1333
1334         /* This Intel specific command enables the manufacturer mode of the
1335          * controller.
1336          *
1337          * Only while this mode is enabled, the driver can download the
1338          * firmware patch data and configuration parameters.
1339          */
1340         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1341         if (IS_ERR(skb)) {
1342                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1343                        hdev->name, PTR_ERR(skb));
1344                 release_firmware(fw);
1345                 return PTR_ERR(skb);
1346         }
1347
1348         if (skb->data[0]) {
1349                 u8 evt_status = skb->data[0];
1350                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1351                        hdev->name, evt_status);
1352                 kfree_skb(skb);
1353                 release_firmware(fw);
1354                 return -bt_to_errno(evt_status);
1355         }
1356         kfree_skb(skb);
1357
1358         disable_patch = 1;
1359
1360         /* The firmware data file consists of list of Intel specific HCI
1361          * commands and its expected events. The first byte indicates the
1362          * type of the message, either HCI command or HCI event.
1363          *
1364          * It reads the command and its expected event from the firmware file,
1365          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1366          * the returned event is compared with the event read from the firmware
1367          * file and it will continue until all the messages are downloaded to
1368          * the controller.
1369          *
1370          * Once the firmware patching is completed successfully,
1371          * the manufacturer mode is disabled with reset and activating the
1372          * downloaded patch.
1373          *
1374          * If the firmware patching fails, the manufacturer mode is
1375          * disabled with reset and deactivating the patch.
1376          *
1377          * If the default patch file is used, no reset is done when disabling
1378          * the manufacturer.
1379          */
1380         while (fw->size > fw_ptr - fw->data) {
1381                 int ret;
1382
1383                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1384                                                  &disable_patch);
1385                 if (ret < 0)
1386                         goto exit_mfg_deactivate;
1387         }
1388
1389         release_firmware(fw);
1390
1391         if (disable_patch)
1392                 goto exit_mfg_disable;
1393
1394         /* Patching completed successfully and disable the manufacturer mode
1395          * with reset and activate the downloaded firmware patches.
1396          */
1397         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1398                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1399         if (IS_ERR(skb)) {
1400                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1401                        hdev->name, PTR_ERR(skb));
1402                 return PTR_ERR(skb);
1403         }
1404         kfree_skb(skb);
1405
1406         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1407                 hdev->name);
1408
1409         btusb_check_bdaddr_intel(hdev);
1410         return 0;
1411
1412 exit_mfg_disable:
1413         /* Disable the manufacturer mode without reset */
1414         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1415                              HCI_INIT_TIMEOUT);
1416         if (IS_ERR(skb)) {
1417                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1418                        hdev->name, PTR_ERR(skb));
1419                 return PTR_ERR(skb);
1420         }
1421         kfree_skb(skb);
1422
1423         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1424
1425         btusb_check_bdaddr_intel(hdev);
1426         return 0;
1427
1428 exit_mfg_deactivate:
1429         release_firmware(fw);
1430
1431         /* Patching failed. Disable the manufacturer mode with reset and
1432          * deactivate the downloaded firmware patches.
1433          */
1434         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1435                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1436         if (IS_ERR(skb)) {
1437                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1438                        hdev->name, PTR_ERR(skb));
1439                 return PTR_ERR(skb);
1440         }
1441         kfree_skb(skb);
1442
1443         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1444                 hdev->name);
1445
1446         btusb_check_bdaddr_intel(hdev);
1447         return 0;
1448 }
1449
1450 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1451 {
1452         struct sk_buff *skb;
1453         long ret;
1454
1455         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
1456         if (IS_ERR(skb)) {
1457                 ret = PTR_ERR(skb);
1458                 BT_ERR("%s: changing Intel device address failed (%ld)",
1459                         hdev->name, ret);
1460                 return ret;
1461         }
1462         kfree_skb(skb);
1463
1464         return 0;
1465 }
1466
1467 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
1468                                     const bdaddr_t *bdaddr)
1469 {
1470         struct sk_buff *skb;
1471         u8 buf[8];
1472         long ret;
1473
1474         buf[0] = 0xfe;
1475         buf[1] = sizeof(bdaddr_t);
1476         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
1477
1478         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
1479         if (IS_ERR(skb)) {
1480                 ret = PTR_ERR(skb);
1481                 BT_ERR("%s: changing Marvell device address failed (%ld)",
1482                        hdev->name, ret);
1483                 return ret;
1484         }
1485         kfree_skb(skb);
1486
1487         return 0;
1488 }
1489
1490 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
1491
1492 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1493 {
1494         struct btusb_data *data = hci_get_drvdata(hdev);
1495         struct usb_device *udev = data->udev;
1496         char fw_name[64];
1497         const struct firmware *fw;
1498         const u8 *fw_ptr;
1499         size_t fw_size;
1500         const struct hci_command_hdr *cmd;
1501         const u8 *cmd_param;
1502         u16 opcode;
1503         struct sk_buff *skb;
1504         struct hci_rp_read_local_version *ver;
1505         struct hci_rp_read_bd_addr *bda;
1506         long ret;
1507
1508         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1509                  udev->product ? udev->product : "BCM",
1510                  le16_to_cpu(udev->descriptor.idVendor),
1511                  le16_to_cpu(udev->descriptor.idProduct));
1512
1513         ret = request_firmware(&fw, fw_name, &hdev->dev);
1514         if (ret < 0) {
1515                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
1516                 return 0;
1517         }
1518
1519         /* Reset */
1520         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1521         if (IS_ERR(skb)) {
1522                 ret = PTR_ERR(skb);
1523                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1524                 goto done;
1525         }
1526         kfree_skb(skb);
1527
1528         /* Read Local Version Info */
1529         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1530                              HCI_INIT_TIMEOUT);
1531         if (IS_ERR(skb)) {
1532                 ret = PTR_ERR(skb);
1533                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1534                         hdev->name, ret);
1535                 goto done;
1536         }
1537
1538         if (skb->len != sizeof(*ver)) {
1539                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1540                         hdev->name);
1541                 kfree_skb(skb);
1542                 ret = -EIO;
1543                 goto done;
1544         }
1545
1546         ver = (struct hci_rp_read_local_version *) skb->data;
1547         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1548                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1549                 ver->lmp_ver, ver->lmp_subver);
1550         kfree_skb(skb);
1551
1552         /* Start Download */
1553         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1554         if (IS_ERR(skb)) {
1555                 ret = PTR_ERR(skb);
1556                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1557                         hdev->name, ret);
1558                 goto reset_fw;
1559         }
1560         kfree_skb(skb);
1561
1562         /* 50 msec delay after Download Minidrv completes */
1563         msleep(50);
1564
1565         fw_ptr = fw->data;
1566         fw_size = fw->size;
1567
1568         while (fw_size >= sizeof(*cmd)) {
1569                 cmd = (struct hci_command_hdr *) fw_ptr;
1570                 fw_ptr += sizeof(*cmd);
1571                 fw_size -= sizeof(*cmd);
1572
1573                 if (fw_size < cmd->plen) {
1574                         BT_ERR("%s: BCM: patch %s is corrupted",
1575                                 hdev->name, fw_name);
1576                         ret = -EINVAL;
1577                         goto reset_fw;
1578                 }
1579
1580                 cmd_param = fw_ptr;
1581                 fw_ptr += cmd->plen;
1582                 fw_size -= cmd->plen;
1583
1584                 opcode = le16_to_cpu(cmd->opcode);
1585
1586                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1587                                      HCI_INIT_TIMEOUT);
1588                 if (IS_ERR(skb)) {
1589                         ret = PTR_ERR(skb);
1590                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1591                                 hdev->name, opcode, ret);
1592                         goto reset_fw;
1593                 }
1594                 kfree_skb(skb);
1595         }
1596
1597         /* 250 msec delay after Launch Ram completes */
1598         msleep(250);
1599
1600 reset_fw:
1601         /* Reset */
1602         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1603         if (IS_ERR(skb)) {
1604                 ret = PTR_ERR(skb);
1605                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1606                 goto done;
1607         }
1608         kfree_skb(skb);
1609
1610         /* Read Local Version Info */
1611         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1612                              HCI_INIT_TIMEOUT);
1613         if (IS_ERR(skb)) {
1614                 ret = PTR_ERR(skb);
1615                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1616                         hdev->name, ret);
1617                 goto done;
1618         }
1619
1620         if (skb->len != sizeof(*ver)) {
1621                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1622                         hdev->name);
1623                 kfree_skb(skb);
1624                 ret = -EIO;
1625                 goto done;
1626         }
1627
1628         ver = (struct hci_rp_read_local_version *) skb->data;
1629         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1630                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1631                 ver->lmp_ver, ver->lmp_subver);
1632         kfree_skb(skb);
1633
1634         /* Read BD Address */
1635         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1636                              HCI_INIT_TIMEOUT);
1637         if (IS_ERR(skb)) {
1638                 ret = PTR_ERR(skb);
1639                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
1640                         hdev->name, ret);
1641                 goto done;
1642         }
1643
1644         if (skb->len != sizeof(*bda)) {
1645                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
1646                         hdev->name);
1647                 kfree_skb(skb);
1648                 ret = -EIO;
1649                 goto done;
1650         }
1651
1652         bda = (struct hci_rp_read_bd_addr *) skb->data;
1653         if (bda->status) {
1654                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
1655                        hdev->name, bda->status);
1656                 kfree_skb(skb);
1657                 ret = -bt_to_errno(bda->status);
1658                 goto done;
1659         }
1660
1661         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
1662          * with no configured address.
1663          */
1664         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
1665                 BT_INFO("%s: BCM: using default device address (%pMR)",
1666                         hdev->name, &bda->bdaddr);
1667                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1668         }
1669
1670         kfree_skb(skb);
1671
1672 done:
1673         release_firmware(fw);
1674
1675         return ret;
1676 }
1677
1678 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1679 {
1680         struct sk_buff *skb;
1681         long ret;
1682
1683         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
1684         if (IS_ERR(skb)) {
1685                 ret = PTR_ERR(skb);
1686                 BT_ERR("%s: BCM: Change address command failed (%ld)",
1687                         hdev->name, ret);
1688                 return ret;
1689         }
1690         kfree_skb(skb);
1691
1692         return 0;
1693 }
1694
1695 static int btusb_probe(struct usb_interface *intf,
1696                                 const struct usb_device_id *id)
1697 {
1698         struct usb_endpoint_descriptor *ep_desc;
1699         struct btusb_data *data;
1700         struct hci_dev *hdev;
1701         int i, err;
1702
1703         BT_DBG("intf %p id %p", intf, id);
1704
1705         /* interface numbers are hardcoded in the spec */
1706         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1707                 return -ENODEV;
1708
1709         if (!id->driver_info) {
1710                 const struct usb_device_id *match;
1711                 match = usb_match_id(intf, blacklist_table);
1712                 if (match)
1713                         id = match;
1714         }
1715
1716         if (id->driver_info == BTUSB_IGNORE)
1717                 return -ENODEV;
1718
1719         if (id->driver_info & BTUSB_ATH3012) {
1720                 struct usb_device *udev = interface_to_usbdev(intf);
1721
1722                 /* Old firmware would otherwise let ath3k driver load
1723                  * patch and sysconfig files */
1724                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1725                         return -ENODEV;
1726         }
1727
1728         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1729         if (!data)
1730                 return -ENOMEM;
1731
1732         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1733                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1734
1735                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1736                         data->intr_ep = ep_desc;
1737                         continue;
1738                 }
1739
1740                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1741                         data->bulk_tx_ep = ep_desc;
1742                         continue;
1743                 }
1744
1745                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1746                         data->bulk_rx_ep = ep_desc;
1747                         continue;
1748                 }
1749         }
1750
1751         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1752                 return -ENODEV;
1753
1754         data->cmdreq_type = USB_TYPE_CLASS;
1755
1756         data->udev = interface_to_usbdev(intf);
1757         data->intf = intf;
1758
1759         spin_lock_init(&data->lock);
1760
1761         INIT_WORK(&data->work, btusb_work);
1762         INIT_WORK(&data->waker, btusb_waker);
1763         spin_lock_init(&data->txlock);
1764
1765         init_usb_anchor(&data->tx_anchor);
1766         init_usb_anchor(&data->intr_anchor);
1767         init_usb_anchor(&data->bulk_anchor);
1768         init_usb_anchor(&data->isoc_anchor);
1769         init_usb_anchor(&data->deferred);
1770
1771         hdev = hci_alloc_dev();
1772         if (!hdev)
1773                 return -ENOMEM;
1774
1775         hdev->bus = HCI_USB;
1776         hci_set_drvdata(hdev, data);
1777
1778         data->hdev = hdev;
1779
1780         SET_HCIDEV_DEV(hdev, &intf->dev);
1781
1782         hdev->open   = btusb_open;
1783         hdev->close  = btusb_close;
1784         hdev->flush  = btusb_flush;
1785         hdev->send   = btusb_send_frame;
1786         hdev->notify = btusb_notify;
1787
1788         if (id->driver_info & BTUSB_BCM92035)
1789                 hdev->setup = btusb_setup_bcm92035;
1790
1791         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
1792                 hdev->setup = btusb_setup_bcm_patchram;
1793                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
1794         }
1795
1796         if (id->driver_info & BTUSB_INTEL) {
1797                 hdev->setup = btusb_setup_intel;
1798                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
1799         }
1800
1801         if (id->driver_info & BTUSB_MARVELL)
1802                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
1803
1804         if (id->driver_info & BTUSB_INTEL_BOOT)
1805                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1806
1807         /* Interface numbers are hardcoded in the specification */
1808         data->isoc = usb_ifnum_to_if(data->udev, 1);
1809
1810         if (!reset)
1811                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1812
1813         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1814                 if (!disable_scofix)
1815                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1816         }
1817
1818         if (id->driver_info & BTUSB_BROKEN_ISOC)
1819                 data->isoc = NULL;
1820
1821         if (id->driver_info & BTUSB_DIGIANSWER) {
1822                 data->cmdreq_type = USB_TYPE_VENDOR;
1823                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1824         }
1825
1826         if (id->driver_info & BTUSB_CSR) {
1827                 struct usb_device *udev = data->udev;
1828                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1829
1830                 /* Old firmware would otherwise execute USB reset */
1831                 if (bcdDevice < 0x117)
1832                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1833
1834                 /* Fake CSR devices with broken commands */
1835                 if (bcdDevice <= 0x100)
1836                         hdev->setup = btusb_setup_csr;
1837         }
1838
1839         if (id->driver_info & BTUSB_SNIFFER) {
1840                 struct usb_device *udev = data->udev;
1841
1842                 /* New sniffer firmware has crippled HCI interface */
1843                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1844                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1845         }
1846
1847         if (id->driver_info & BTUSB_INTEL_BOOT) {
1848                 /* A bug in the bootloader causes that interrupt interface is
1849                  * only enabled after receiving SetInterface(0, AltSetting=0).
1850                  */
1851                 err = usb_set_interface(data->udev, 0, 0);
1852                 if (err < 0) {
1853                         BT_ERR("failed to set interface 0, alt 0 %d", err);
1854                         hci_free_dev(hdev);
1855                         return err;
1856                 }
1857         }
1858
1859         if (data->isoc) {
1860                 err = usb_driver_claim_interface(&btusb_driver,
1861                                                         data->isoc, data);
1862                 if (err < 0) {
1863                         hci_free_dev(hdev);
1864                         return err;
1865                 }
1866         }
1867
1868         err = hci_register_dev(hdev);
1869         if (err < 0) {
1870                 hci_free_dev(hdev);
1871                 return err;
1872         }
1873
1874         usb_set_intfdata(intf, data);
1875
1876         return 0;
1877 }
1878
1879 static void btusb_disconnect(struct usb_interface *intf)
1880 {
1881         struct btusb_data *data = usb_get_intfdata(intf);
1882         struct hci_dev *hdev;
1883
1884         BT_DBG("intf %p", intf);
1885
1886         if (!data)
1887                 return;
1888
1889         hdev = data->hdev;
1890         usb_set_intfdata(data->intf, NULL);
1891
1892         if (data->isoc)
1893                 usb_set_intfdata(data->isoc, NULL);
1894
1895         hci_unregister_dev(hdev);
1896
1897         if (intf == data->isoc)
1898                 usb_driver_release_interface(&btusb_driver, data->intf);
1899         else if (data->isoc)
1900                 usb_driver_release_interface(&btusb_driver, data->isoc);
1901
1902         hci_free_dev(hdev);
1903 }
1904
1905 #ifdef CONFIG_PM
1906 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1907 {
1908         struct btusb_data *data = usb_get_intfdata(intf);
1909
1910         BT_DBG("intf %p", intf);
1911
1912         if (data->suspend_count++)
1913                 return 0;
1914
1915         spin_lock_irq(&data->txlock);
1916         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1917                 set_bit(BTUSB_SUSPENDING, &data->flags);
1918                 spin_unlock_irq(&data->txlock);
1919         } else {
1920                 spin_unlock_irq(&data->txlock);
1921                 data->suspend_count--;
1922                 return -EBUSY;
1923         }
1924
1925         cancel_work_sync(&data->work);
1926
1927         btusb_stop_traffic(data);
1928         usb_kill_anchored_urbs(&data->tx_anchor);
1929
1930         return 0;
1931 }
1932
1933 static void play_deferred(struct btusb_data *data)
1934 {
1935         struct urb *urb;
1936         int err;
1937
1938         while ((urb = usb_get_from_anchor(&data->deferred))) {
1939                 err = usb_submit_urb(urb, GFP_ATOMIC);
1940                 if (err < 0)
1941                         break;
1942
1943                 data->tx_in_flight++;
1944         }
1945         usb_scuttle_anchored_urbs(&data->deferred);
1946 }
1947
1948 static int btusb_resume(struct usb_interface *intf)
1949 {
1950         struct btusb_data *data = usb_get_intfdata(intf);
1951         struct hci_dev *hdev = data->hdev;
1952         int err = 0;
1953
1954         BT_DBG("intf %p", intf);
1955
1956         if (--data->suspend_count)
1957                 return 0;
1958
1959         if (!test_bit(HCI_RUNNING, &hdev->flags))
1960                 goto done;
1961
1962         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1963                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1964                 if (err < 0) {
1965                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1966                         goto failed;
1967                 }
1968         }
1969
1970         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1971                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1972                 if (err < 0) {
1973                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1974                         goto failed;
1975                 }
1976
1977                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1978         }
1979
1980         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1981                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1982                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1983                 else
1984                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1985         }
1986
1987         spin_lock_irq(&data->txlock);
1988         play_deferred(data);
1989         clear_bit(BTUSB_SUSPENDING, &data->flags);
1990         spin_unlock_irq(&data->txlock);
1991         schedule_work(&data->work);
1992
1993         return 0;
1994
1995 failed:
1996         usb_scuttle_anchored_urbs(&data->deferred);
1997 done:
1998         spin_lock_irq(&data->txlock);
1999         clear_bit(BTUSB_SUSPENDING, &data->flags);
2000         spin_unlock_irq(&data->txlock);
2001
2002         return err;
2003 }
2004 #endif
2005
2006 static struct usb_driver btusb_driver = {
2007         .name           = "btusb",
2008         .probe          = btusb_probe,
2009         .disconnect     = btusb_disconnect,
2010 #ifdef CONFIG_PM
2011         .suspend        = btusb_suspend,
2012         .resume         = btusb_resume,
2013 #endif
2014         .id_table       = btusb_table,
2015         .supports_autosuspend = 1,
2016         .disable_hub_initiated_lpm = 1,
2017 };
2018
2019 module_usb_driver(btusb_driver);
2020
2021 module_param(disable_scofix, bool, 0644);
2022 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2023
2024 module_param(force_scofix, bool, 0644);
2025 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2026
2027 module_param(reset, bool, 0644);
2028 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2029
2030 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2031 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2032 MODULE_VERSION(VERSION);
2033 MODULE_LICENSE("GPL");