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/usb/quirks.h>
  27 #include <linux/firmware.h>
  28 #include <asm/unaligned.h>
  29
  30 #include <net/bluetooth/bluetooth.h>
  31 #include <net/bluetooth/hci_core.h>
  32
  33 #include "btintel.h"
  34 #include "btbcm.h"
  35 #include "btrtl.h"
  36
  37 #define VERSION "0.8"
  38
  39 static bool disable_scofix;
  40 static bool force_scofix;
  41
  42 static bool reset = true;
  43
  44 static struct usb_driver btusb_driver;
  45
  46 #define BTUSB_IGNORE            0x01
  47 #define BTUSB_DIGIANSWER        0x02
  48 #define BTUSB_CSR               0x04
  49 #define BTUSB_SNIFFER           0x08
  50 #define BTUSB_BCM92035          0x10
  51 #define BTUSB_BROKEN_ISOC       0x20
  52 #define BTUSB_WRONG_SCO_MTU     0x40
  53 #define BTUSB_ATH3012           0x80
  54 #define BTUSB_INTEL             0x100
  55 #define BTUSB_INTEL_BOOT        0x200
  56 #define BTUSB_BCM_PATCHRAM      0x400
  57 #define BTUSB_MARVELL           0x800
  58 #define BTUSB_SWAVE             0x1000
  59 #define BTUSB_INTEL_NEW         0x2000
  60 #define BTUSB_AMP               0x4000
  61 #define BTUSB_QCA_ROME          0x8000
  62 #define BTUSB_BCM_APPLE         0x10000
  63 #define BTUSB_REALTEK           0x20000
  64 #define BTUSB_BCM2045           0x40000
  65 #define BTUSB_IFNUM_2           0x80000
  66 #define BTUSB_CW6622            0x100000
  67
  68 static const struct usb_device_id btusb_table[] = {
  69         /* Generic Bluetooth USB device */
  70         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  71
  72         /* Generic Bluetooth AMP device */
  73         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  74
  75         /* Generic Bluetooth USB interface */
  76         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  77
  78         /* Apple-specific (Broadcom) devices */
  79         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  80           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  81
  82         /* MediaTek MT76x0E */
  83         { USB_DEVICE(0x0e8d, 0x763f) },
  84
  85         /* Broadcom SoftSailing reporting vendor specific */
  86         { USB_DEVICE(0x0a5c, 0x21e1) },
  87
  88         /* Apple MacBookPro 7,1 */
  89         { USB_DEVICE(0x05ac, 0x8213) },
  90
  91         /* Apple iMac11,1 */
  92         { USB_DEVICE(0x05ac, 0x8215) },
  93
  94         /* Apple MacBookPro6,2 */
  95         { USB_DEVICE(0x05ac, 0x8218) },
  96
  97         /* Apple MacBookAir3,1, MacBookAir3,2 */
  98         { USB_DEVICE(0x05ac, 0x821b) },
  99
 100         /* Apple MacBookAir4,1 */
 101         { USB_DEVICE(0x05ac, 0x821f) },
 102
 103         /* Apple MacBookPro8,2 */
 104         { USB_DEVICE(0x05ac, 0x821a) },
 105
 106         /* Apple MacMini5,1 */
 107         { USB_DEVICE(0x05ac, 0x8281) },
 108
 109         /* AVM BlueFRITZ! USB v2.0 */
 110         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 111
 112         /* Bluetooth Ultraport Module from IBM */
 113         { USB_DEVICE(0x04bf, 0x030a) },
 114
 115         /* ALPS Modules with non-standard id */
 116         { USB_DEVICE(0x044e, 0x3001) },
 117         { USB_DEVICE(0x044e, 0x3002) },
 118
 119         /* Ericsson with non-standard id */
 120         { USB_DEVICE(0x0bdb, 0x1002) },
 121
 122         /* Canyon CN-BTU1 with HID interfaces */
 123         { USB_DEVICE(0x0c10, 0x0000) },
 124
 125         /* Broadcom BCM20702A0 */
 126         { USB_DEVICE(0x413c, 0x8197) },
 127
 128         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 129         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 130
 131         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 132         { USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM },
 133
 134         /* Foxconn - Hon Hai */
 135         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 136           .driver_info = BTUSB_BCM_PATCHRAM },
 137
 138         /* Lite-On Technology - Broadcom based */
 139         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 140           .driver_info = BTUSB_BCM_PATCHRAM },
 141
 142         /* Broadcom devices with vendor specific id */
 143         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 144           .driver_info = BTUSB_BCM_PATCHRAM },
 145
 146         /* ASUSTek Computer - Broadcom based */
 147         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 148           .driver_info = BTUSB_BCM_PATCHRAM },
 149
 150         /* Belkin F8065bf - Broadcom based */
 151         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 152           .driver_info = BTUSB_BCM_PATCHRAM },
 153
 154         /* IMC Networks - Broadcom based */
 155         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 156           .driver_info = BTUSB_BCM_PATCHRAM },
 157
 158         /* Toshiba Corp - Broadcom based */
 159         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 160           .driver_info = BTUSB_BCM_PATCHRAM },
 161
 162         /* Intel Bluetooth USB Bootloader (RAM module) */
 163         { USB_DEVICE(0x8087, 0x0a5a),
 164           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 165
 166         { }     /* Terminating entry */
 167 };
 168
 169 MODULE_DEVICE_TABLE(usb, btusb_table);
 170
 171 static const struct usb_device_id blacklist_table[] = {
 172         /* CSR BlueCore devices */
 173         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 174
 175         /* Broadcom BCM2033 without firmware */
 176         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 177
 178         /* Broadcom BCM2045 devices */
 179         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 180
 181         /* Atheros 3011 with sflash firmware */
 182         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 183         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 184         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 185         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 186         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 187         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 188         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 189
 190         /* Atheros AR9285 Malbec with sflash firmware */
 191         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 192
 193         /* Atheros 3012 with sflash firmware */
 194         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 244
 245         /* Atheros AR5BBU12 with sflash firmware */
 246         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 247
 248         /* Atheros AR5BBU12 with sflash firmware */
 249         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 250         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 251
 252         /* QCA ROME chipset */
 253         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 254         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 255         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 256         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 257         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 258         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 259
 260         /* Broadcom BCM2035 */
 261         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 262         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 263         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 264
 265         /* Broadcom BCM2045 */
 266         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 267         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 268
 269         /* IBM/Lenovo ThinkPad with Broadcom chip */
 270         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 271         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 272
 273         /* HP laptop with Broadcom chip */
 274         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 275
 276         /* Dell laptop with Broadcom chip */
 277         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 278
 279         /* Dell Wireless 370 and 410 devices */
 280         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 281         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 282
 283         /* Belkin F8T012 and F8T013 devices */
 284         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 285         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 286
 287         /* Asus WL-BTD202 device */
 288         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 289
 290         /* Kensington Bluetooth USB adapter */
 291         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 292
 293         /* RTX Telecom based adapters with buggy SCO support */
 294         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 295         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 296
 297         /* CONWISE Technology based adapters with buggy SCO support */
 298         { USB_DEVICE(0x0e5e, 0x6622),
 299           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 300
 301         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 302         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 303
 304         /* Digianswer devices */
 305         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 306         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 307
 308         /* CSR BlueCore Bluetooth Sniffer */
 309         { USB_DEVICE(0x0a12, 0x0002),
 310           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 311
 312         /* Frontline ComProbe Bluetooth Sniffer */
 313         { USB_DEVICE(0x16d3, 0x0002),
 314           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 315
 316         /* Marvell Bluetooth devices */
 317         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 318         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 319         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 320
 321         /* Intel Bluetooth devices */
 322         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 323         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 324         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 325         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 326         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
 327
 328         /* Other Intel Bluetooth devices */
 329         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 330           .driver_info = BTUSB_IGNORE },
 331
 332         /* Realtek Bluetooth devices */
 333         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 334           .driver_info = BTUSB_REALTEK },
 335
 336         /* Additional Realtek 8723AE Bluetooth devices */
 337         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 338         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 339
 340         /* Additional Realtek 8723BE Bluetooth devices */
 341         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 342         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 343         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 344         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 345         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 346         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 347
 348         /* Additional Realtek 8723BU Bluetooth devices */
 349         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 350
 351         /* Additional Realtek 8723DE Bluetooth devices */
 352         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 353         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 354
 355         /* Additional Realtek 8821AE Bluetooth devices */
 356         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 357         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 358         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 359         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 360         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 361
 362         /* Additional Realtek 8822BE Bluetooth devices */
 363         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 364
 365         /* Additional Realtek 8822CE Bluetooth devices */
 366         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK },
 367
 368         /* Silicon Wave based devices */
 369         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 370
 371         { }     /* Terminating entry */
 372 };
 373
 374 #define BTUSB_MAX_ISOC_FRAMES   10
 375
 376 #define BTUSB_INTR_RUNNING      0
 377 #define BTUSB_BULK_RUNNING      1
 378 #define BTUSB_ISOC_RUNNING      2
 379 #define BTUSB_SUSPENDING        3
 380 #define BTUSB_DID_ISO_RESUME    4
 381 #define BTUSB_BOOTLOADER        5
 382 #define BTUSB_DOWNLOADING       6
 383 #define BTUSB_FIRMWARE_LOADED   7
 384 #define BTUSB_FIRMWARE_FAILED   8
 385 #define BTUSB_BOOTING           9
 386 #define BTUSB_DIAG_RUNNING      10
 387 #define BTUSB_OOB_WAKE_ENABLED  11
 388
 389 struct btusb_data {
 390         struct hci_dev       *hdev;
 391         struct usb_device    *udev;
 392         struct usb_interface *intf;
 393         struct usb_interface *isoc;
 394         struct usb_interface *diag;
 395
 396         unsigned long flags;
 397
 398         struct work_struct work;
 399         struct work_struct waker;
 400
 401         struct usb_anchor deferred;
 402         struct usb_anchor tx_anchor;
 403         int tx_in_flight;
 404         spinlock_t txlock;
 405
 406         struct usb_anchor intr_anchor;
 407         struct usb_anchor bulk_anchor;
 408         struct usb_anchor isoc_anchor;
 409         struct usb_anchor diag_anchor;
 410         spinlock_t rxlock;
 411
 412         struct sk_buff *evt_skb;
 413         struct sk_buff *acl_skb;
 414         struct sk_buff *sco_skb;
 415
 416         struct usb_endpoint_descriptor *intr_ep;
 417         struct usb_endpoint_descriptor *bulk_tx_ep;
 418         struct usb_endpoint_descriptor *bulk_rx_ep;
 419         struct usb_endpoint_descriptor *isoc_tx_ep;
 420         struct usb_endpoint_descriptor *isoc_rx_ep;
 421         struct usb_endpoint_descriptor *diag_tx_ep;
 422         struct usb_endpoint_descriptor *diag_rx_ep;
 423
 424         __u8 cmdreq_type;
 425         __u8 cmdreq;
 426
 427         unsigned int sco_num;
 428         int isoc_altsetting;
 429         int suspend_count;
 430
 431         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 432         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 433
 434         int (*setup_on_usb)(struct hci_dev *hdev);
 435 };
 436
 437 static inline void btusb_free_frags(struct btusb_data *data)
 438 {
 439         unsigned long flags;
 440
 441         spin_lock_irqsave(&data->rxlock, flags);
 442
 443         kfree_skb(data->evt_skb);
 444         data->evt_skb = NULL;
 445
 446         kfree_skb(data->acl_skb);
 447         data->acl_skb = NULL;
 448
 449         kfree_skb(data->sco_skb);
 450         data->sco_skb = NULL;
 451
 452         spin_unlock_irqrestore(&data->rxlock, flags);
 453 }
 454
 455 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 456 {
 457         struct sk_buff *skb;
 458         int err = 0;
 459
 460         spin_lock(&data->rxlock);
 461         skb = data->evt_skb;
 462
 463         while (count) {
 464                 int len;
 465
 466                 if (!skb) {
 467                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 468                         if (!skb) {
 469                                 err = -ENOMEM;
 470                                 break;
 471                         }
 472
 473                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 474                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 475                 }
 476
 477                 len = min_t(uint, hci_skb_expect(skb), count);
 478                 memcpy(skb_put(skb, len), buffer, len);
 479
 480                 count -= len;
 481                 buffer += len;
 482                 hci_skb_expect(skb) -= len;
 483
 484                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 485                         /* Complete event header */
 486                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 487
 488                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 489                                 kfree_skb(skb);
 490                                 skb = NULL;
 491
 492                                 err = -EILSEQ;
 493                                 break;
 494                         }
 495                 }
 496
 497                 if (!hci_skb_expect(skb)) {
 498                         /* Complete frame */
 499                         data->recv_event(data->hdev, skb);
 500                         skb = NULL;
 501                 }
 502         }
 503
 504         data->evt_skb = skb;
 505         spin_unlock(&data->rxlock);
 506
 507         return err;
 508 }
 509
 510 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 511 {
 512         struct sk_buff *skb;
 513         int err = 0;
 514
 515         spin_lock(&data->rxlock);
 516         skb = data->acl_skb;
 517
 518         while (count) {
 519                 int len;
 520
 521                 if (!skb) {
 522                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 523                         if (!skb) {
 524                                 err = -ENOMEM;
 525                                 break;
 526                         }
 527
 528                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 529                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 530                 }
 531
 532                 len = min_t(uint, hci_skb_expect(skb), count);
 533                 memcpy(skb_put(skb, len), buffer, len);
 534
 535                 count -= len;
 536                 buffer += len;
 537                 hci_skb_expect(skb) -= len;
 538
 539                 if (skb->len == HCI_ACL_HDR_SIZE) {
 540                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 541
 542                         /* Complete ACL header */
 543                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 544
 545                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 546                                 kfree_skb(skb);
 547                                 skb = NULL;
 548
 549                                 err = -EILSEQ;
 550                                 break;
 551                         }
 552                 }
 553
 554                 if (!hci_skb_expect(skb)) {
 555                         /* Complete frame */
 556                         hci_recv_frame(data->hdev, skb);
 557                         skb = NULL;
 558                 }
 559         }
 560
 561         data->acl_skb = skb;
 562         spin_unlock(&data->rxlock);
 563
 564         return err;
 565 }
 566
 567 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 568 {
 569         struct sk_buff *skb;
 570         int err = 0;
 571
 572         spin_lock(&data->rxlock);
 573         skb = data->sco_skb;
 574
 575         while (count) {
 576                 int len;
 577
 578                 if (!skb) {
 579                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 580                         if (!skb) {
 581                                 err = -ENOMEM;
 582                                 break;
 583                         }
 584
 585                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 586                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 587                 }
 588
 589                 len = min_t(uint, hci_skb_expect(skb), count);
 590                 memcpy(skb_put(skb, len), buffer, len);
 591
 592                 count -= len;
 593                 buffer += len;
 594                 hci_skb_expect(skb) -= len;
 595
 596                 if (skb->len == HCI_SCO_HDR_SIZE) {
 597                         /* Complete SCO header */
 598                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 599
 600                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 601                                 kfree_skb(skb);
 602                                 skb = NULL;
 603
 604                                 err = -EILSEQ;
 605                                 break;
 606                         }
 607                 }
 608
 609                 if (!hci_skb_expect(skb)) {
 610                         /* Complete frame */
 611                         hci_recv_frame(data->hdev, skb);
 612                         skb = NULL;
 613                 }
 614         }
 615
 616         data->sco_skb = skb;
 617         spin_unlock(&data->rxlock);
 618
 619         return err;
 620 }
 621
 622 static void btusb_intr_complete(struct urb *urb)
 623 {
 624         struct hci_dev *hdev = urb->context;
 625         struct btusb_data *data = hci_get_drvdata(hdev);
 626         int err;
 627
 628         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 629                urb->actual_length);
 630
 631         if (!test_bit(HCI_RUNNING, &hdev->flags))
 632                 return;
 633
 634         if (urb->status == 0) {
 635                 hdev->stat.byte_rx += urb->actual_length;
 636
 637                 if (btusb_recv_intr(data, urb->transfer_buffer,
 638                                     urb->actual_length) < 0) {
 639                         BT_ERR("%s corrupted event packet", hdev->name);
 640                         hdev->stat.err_rx++;
 641                 }
 642         } else if (urb->status == -ENOENT) {
 643                 /* Avoid suspend failed when usb_kill_urb */
 644                 return;
 645         }
 646
 647         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 648                 return;
 649
 650         usb_mark_last_busy(data->udev);
 651         usb_anchor_urb(urb, &data->intr_anchor);
 652
 653         err = usb_submit_urb(urb, GFP_ATOMIC);
 654         if (err < 0) {
 655                 /* -EPERM: urb is being killed;
 656                  * -ENODEV: device got disconnected */
 657                 if (err != -EPERM && err != -ENODEV)
 658                         BT_ERR("%s urb %p failed to resubmit (%d)",
 659                                hdev->name, urb, -err);
 660                 usb_unanchor_urb(urb);
 661         }
 662 }
 663
 664 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 665 {
 666         struct btusb_data *data = hci_get_drvdata(hdev);
 667         struct urb *urb;
 668         unsigned char *buf;
 669         unsigned int pipe;
 670         int err, size;
 671
 672         BT_DBG("%s", hdev->name);
 673
 674         if (!data->intr_ep)
 675                 return -ENODEV;
 676
 677         urb = usb_alloc_urb(0, mem_flags);
 678         if (!urb)
 679                 return -ENOMEM;
 680
 681         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 682
 683         buf = kmalloc(size, mem_flags);
 684         if (!buf) {
 685                 usb_free_urb(urb);
 686                 return -ENOMEM;
 687         }
 688
 689         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 690
 691         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 692                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 693
 694         urb->transfer_flags |= URB_FREE_BUFFER;
 695
 696         usb_anchor_urb(urb, &data->intr_anchor);
 697
 698         err = usb_submit_urb(urb, mem_flags);
 699         if (err < 0) {
 700                 if (err != -EPERM && err != -ENODEV)
 701                         BT_ERR("%s urb %p submission failed (%d)",
 702                                hdev->name, urb, -err);
 703                 usb_unanchor_urb(urb);
 704         }
 705
 706         usb_free_urb(urb);
 707
 708         return err;
 709 }
 710
 711 static void btusb_bulk_complete(struct urb *urb)
 712 {
 713         struct hci_dev *hdev = urb->context;
 714         struct btusb_data *data = hci_get_drvdata(hdev);
 715         int err;
 716
 717         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 718                urb->actual_length);
 719
 720         if (!test_bit(HCI_RUNNING, &hdev->flags))
 721                 return;
 722
 723         if (urb->status == 0) {
 724                 hdev->stat.byte_rx += urb->actual_length;
 725
 726                 if (data->recv_bulk(data, urb->transfer_buffer,
 727                                     urb->actual_length) < 0) {
 728                         BT_ERR("%s corrupted ACL packet", hdev->name);
 729                         hdev->stat.err_rx++;
 730                 }
 731         } else if (urb->status == -ENOENT) {
 732                 /* Avoid suspend failed when usb_kill_urb */
 733                 return;
 734         }
 735
 736         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 737                 return;
 738
 739         usb_anchor_urb(urb, &data->bulk_anchor);
 740         usb_mark_last_busy(data->udev);
 741
 742         err = usb_submit_urb(urb, GFP_ATOMIC);
 743         if (err < 0) {
 744                 /* -EPERM: urb is being killed;
 745                  * -ENODEV: device got disconnected */
 746                 if (err != -EPERM && err != -ENODEV)
 747                         BT_ERR("%s urb %p failed to resubmit (%d)",
 748                                hdev->name, urb, -err);
 749                 usb_unanchor_urb(urb);
 750         }
 751 }
 752
 753 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 754 {
 755         struct btusb_data *data = hci_get_drvdata(hdev);
 756         struct urb *urb;
 757         unsigned char *buf;
 758         unsigned int pipe;
 759         int err, size = HCI_MAX_FRAME_SIZE;
 760
 761         BT_DBG("%s", hdev->name);
 762
 763         if (!data->bulk_rx_ep)
 764                 return -ENODEV;
 765
 766         urb = usb_alloc_urb(0, mem_flags);
 767         if (!urb)
 768                 return -ENOMEM;
 769
 770         buf = kmalloc(size, mem_flags);
 771         if (!buf) {
 772                 usb_free_urb(urb);
 773                 return -ENOMEM;
 774         }
 775
 776         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 777
 778         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 779                           btusb_bulk_complete, hdev);
 780
 781         urb->transfer_flags |= URB_FREE_BUFFER;
 782
 783         usb_mark_last_busy(data->udev);
 784         usb_anchor_urb(urb, &data->bulk_anchor);
 785
 786         err = usb_submit_urb(urb, mem_flags);
 787         if (err < 0) {
 788                 if (err != -EPERM && err != -ENODEV)
 789                         BT_ERR("%s urb %p submission failed (%d)",
 790                                hdev->name, urb, -err);
 791                 usb_unanchor_urb(urb);
 792         }
 793
 794         usb_free_urb(urb);
 795
 796         return err;
 797 }
 798
 799 static void btusb_isoc_complete(struct urb *urb)
 800 {
 801         struct hci_dev *hdev = urb->context;
 802         struct btusb_data *data = hci_get_drvdata(hdev);
 803         int i, err;
 804
 805         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 806                urb->actual_length);
 807
 808         if (!test_bit(HCI_RUNNING, &hdev->flags))
 809                 return;
 810
 811         if (urb->status == 0) {
 812                 for (i = 0; i < urb->number_of_packets; i++) {
 813                         unsigned int offset = urb->iso_frame_desc[i].offset;
 814                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 815
 816                         if (urb->iso_frame_desc[i].status)
 817                                 continue;
 818
 819                         hdev->stat.byte_rx += length;
 820
 821                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 822                                             length) < 0) {
 823                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 824                                 hdev->stat.err_rx++;
 825                         }
 826                 }
 827         } else if (urb->status == -ENOENT) {
 828                 /* Avoid suspend failed when usb_kill_urb */
 829                 return;
 830         }
 831
 832         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 833                 return;
 834
 835         usb_anchor_urb(urb, &data->isoc_anchor);
 836
 837         err = usb_submit_urb(urb, GFP_ATOMIC);
 838         if (err < 0) {
 839                 /* -EPERM: urb is being killed;
 840                  * -ENODEV: device got disconnected */
 841                 if (err != -EPERM && err != -ENODEV)
 842                         BT_ERR("%s urb %p failed to resubmit (%d)",
 843                                hdev->name, urb, -err);
 844                 usb_unanchor_urb(urb);
 845         }
 846 }
 847
 848 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 849 {
 850         int i, offset = 0;
 851
 852         BT_DBG("len %d mtu %d", len, mtu);
 853
 854         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 855                                         i++, offset += mtu, len -= mtu) {
 856                 urb->iso_frame_desc[i].offset = offset;
 857                 urb->iso_frame_desc[i].length = mtu;
 858         }
 859
 860         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 861                 urb->iso_frame_desc[i].offset = offset;
 862                 urb->iso_frame_desc[i].length = len;
 863                 i++;
 864         }
 865
 866         urb->number_of_packets = i;
 867 }
 868
 869 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 870 {
 871         struct btusb_data *data = hci_get_drvdata(hdev);
 872         struct urb *urb;
 873         unsigned char *buf;
 874         unsigned int pipe;
 875         int err, size;
 876
 877         BT_DBG("%s", hdev->name);
 878
 879         if (!data->isoc_rx_ep)
 880                 return -ENODEV;
 881
 882         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 883         if (!urb)
 884                 return -ENOMEM;
 885
 886         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 887                                                 BTUSB_MAX_ISOC_FRAMES;
 888
 889         buf = kmalloc(size, mem_flags);
 890         if (!buf) {
 891                 usb_free_urb(urb);
 892                 return -ENOMEM;
 893         }
 894
 895         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 896
 897         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 898                          hdev, data->isoc_rx_ep->bInterval);
 899
 900         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 901
 902         __fill_isoc_descriptor(urb, size,
 903                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 904
 905         usb_anchor_urb(urb, &data->isoc_anchor);
 906
 907         err = usb_submit_urb(urb, mem_flags);
 908         if (err < 0) {
 909                 if (err != -EPERM && err != -ENODEV)
 910                         BT_ERR("%s urb %p submission failed (%d)",
 911                                hdev->name, urb, -err);
 912                 usb_unanchor_urb(urb);
 913         }
 914
 915         usb_free_urb(urb);
 916
 917         return err;
 918 }
 919
 920 static void btusb_diag_complete(struct urb *urb)
 921 {
 922         struct hci_dev *hdev = urb->context;
 923         struct btusb_data *data = hci_get_drvdata(hdev);
 924         int err;
 925
 926         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 927                urb->actual_length);
 928
 929         if (urb->status == 0) {
 930                 struct sk_buff *skb;
 931
 932                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
 933                 if (skb) {
 934                         memcpy(skb_put(skb, urb->actual_length),
 935                                urb->transfer_buffer, urb->actual_length);
 936                         hci_recv_diag(hdev, skb);
 937                 }
 938         } else if (urb->status == -ENOENT) {
 939                 /* Avoid suspend failed when usb_kill_urb */
 940                 return;
 941         }
 942
 943         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
 944                 return;
 945
 946         usb_anchor_urb(urb, &data->diag_anchor);
 947         usb_mark_last_busy(data->udev);
 948
 949         err = usb_submit_urb(urb, GFP_ATOMIC);
 950         if (err < 0) {
 951                 /* -EPERM: urb is being killed;
 952                  * -ENODEV: device got disconnected */
 953                 if (err != -EPERM && err != -ENODEV)
 954                         BT_ERR("%s urb %p failed to resubmit (%d)",
 955                                hdev->name, urb, -err);
 956                 usb_unanchor_urb(urb);
 957         }
 958 }
 959
 960 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
 961 {
 962         struct btusb_data *data = hci_get_drvdata(hdev);
 963         struct urb *urb;
 964         unsigned char *buf;
 965         unsigned int pipe;
 966         int err, size = HCI_MAX_FRAME_SIZE;
 967
 968         BT_DBG("%s", hdev->name);
 969
 970         if (!data->diag_rx_ep)
 971                 return -ENODEV;
 972
 973         urb = usb_alloc_urb(0, mem_flags);
 974         if (!urb)
 975                 return -ENOMEM;
 976
 977         buf = kmalloc(size, mem_flags);
 978         if (!buf) {
 979                 usb_free_urb(urb);
 980                 return -ENOMEM;
 981         }
 982
 983         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
 984
 985         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 986                           btusb_diag_complete, hdev);
 987
 988         urb->transfer_flags |= URB_FREE_BUFFER;
 989
 990         usb_mark_last_busy(data->udev);
 991         usb_anchor_urb(urb, &data->diag_anchor);
 992
 993         err = usb_submit_urb(urb, mem_flags);
 994         if (err < 0) {
 995                 if (err != -EPERM && err != -ENODEV)
 996                         BT_ERR("%s urb %p submission failed (%d)",
 997                                hdev->name, urb, -err);
 998                 usb_unanchor_urb(urb);
 999         }
1000
1001         usb_free_urb(urb);
1002
1003         return err;
1004 }
1005
1006 static void btusb_tx_complete(struct urb *urb)
1007 {
1008         struct sk_buff *skb = urb->context;
1009         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1010         struct btusb_data *data = hci_get_drvdata(hdev);
1011
1012         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1013                urb->actual_length);
1014
1015         if (!test_bit(HCI_RUNNING, &hdev->flags))
1016                 goto done;
1017
1018         if (!urb->status)
1019                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1020         else
1021                 hdev->stat.err_tx++;
1022
1023 done:
1024         spin_lock(&data->txlock);
1025         data->tx_in_flight--;
1026         spin_unlock(&data->txlock);
1027
1028         kfree(urb->setup_packet);
1029
1030         kfree_skb(skb);
1031 }
1032
1033 static void btusb_isoc_tx_complete(struct urb *urb)
1034 {
1035         struct sk_buff *skb = urb->context;
1036         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1037
1038         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1039                urb->actual_length);
1040
1041         if (!test_bit(HCI_RUNNING, &hdev->flags))
1042                 goto done;
1043
1044         if (!urb->status)
1045                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1046         else
1047                 hdev->stat.err_tx++;
1048
1049 done:
1050         kfree(urb->setup_packet);
1051
1052         kfree_skb(skb);
1053 }
1054
1055 static int btusb_open(struct hci_dev *hdev)
1056 {
1057         struct btusb_data *data = hci_get_drvdata(hdev);
1058         int err;
1059
1060         BT_DBG("%s", hdev->name);
1061
1062         err = usb_autopm_get_interface(data->intf);
1063         if (err < 0)
1064                 return err;
1065
1066         /* Patching USB firmware files prior to starting any URBs of HCI path
1067          * It is more safe to use USB bulk channel for downloading USB patch
1068          */
1069         if (data->setup_on_usb) {
1070                 err = data->setup_on_usb(hdev);
1071                 if (err < 0)
1072                         goto setup_fail;
1073         }
1074
1075         data->intf->needs_remote_wakeup = 1;
1076
1077         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1078                 goto done;
1079
1080         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1081         if (err < 0)
1082                 goto failed;
1083
1084         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1085         if (err < 0) {
1086                 usb_kill_anchored_urbs(&data->intr_anchor);
1087                 goto failed;
1088         }
1089
1090         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1091         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1092
1093         if (data->diag) {
1094                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1095                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1096         }
1097
1098 done:
1099         usb_autopm_put_interface(data->intf);
1100         return 0;
1101
1102 failed:
1103         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1104 setup_fail:
1105         usb_autopm_put_interface(data->intf);
1106         return err;
1107 }
1108
1109 static void btusb_stop_traffic(struct btusb_data *data)
1110 {
1111         usb_kill_anchored_urbs(&data->intr_anchor);
1112         usb_kill_anchored_urbs(&data->bulk_anchor);
1113         usb_kill_anchored_urbs(&data->isoc_anchor);
1114         usb_kill_anchored_urbs(&data->diag_anchor);
1115 }
1116
1117 static int btusb_close(struct hci_dev *hdev)
1118 {
1119         struct btusb_data *data = hci_get_drvdata(hdev);
1120         int err;
1121
1122         BT_DBG("%s", hdev->name);
1123
1124         cancel_work_sync(&data->work);
1125         cancel_work_sync(&data->waker);
1126
1127         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1128         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1129         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1130         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1131
1132         btusb_stop_traffic(data);
1133         btusb_free_frags(data);
1134
1135         err = usb_autopm_get_interface(data->intf);
1136         if (err < 0)
1137                 goto failed;
1138
1139         data->intf->needs_remote_wakeup = 0;
1140         usb_autopm_put_interface(data->intf);
1141
1142 failed:
1143         usb_scuttle_anchored_urbs(&data->deferred);
1144         return 0;
1145 }
1146
1147 static int btusb_flush(struct hci_dev *hdev)
1148 {
1149         struct btusb_data *data = hci_get_drvdata(hdev);
1150
1151         BT_DBG("%s", hdev->name);
1152
1153         usb_kill_anchored_urbs(&data->tx_anchor);
1154         btusb_free_frags(data);
1155
1156         return 0;
1157 }
1158
1159 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1160 {
1161         struct btusb_data *data = hci_get_drvdata(hdev);
1162         struct usb_ctrlrequest *dr;
1163         struct urb *urb;
1164         unsigned int pipe;
1165
1166         urb = usb_alloc_urb(0, GFP_KERNEL);
1167         if (!urb)
1168                 return ERR_PTR(-ENOMEM);
1169
1170         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1171         if (!dr) {
1172                 usb_free_urb(urb);
1173                 return ERR_PTR(-ENOMEM);
1174         }
1175
1176         dr->bRequestType = data->cmdreq_type;
1177         dr->bRequest     = data->cmdreq;
1178         dr->wIndex       = 0;
1179         dr->wValue       = 0;
1180         dr->wLength      = __cpu_to_le16(skb->len);
1181
1182         pipe = usb_sndctrlpipe(data->udev, 0x00);
1183
1184         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1185                              skb->data, skb->len, btusb_tx_complete, skb);
1186
1187         skb->dev = (void *)hdev;
1188
1189         return urb;
1190 }
1191
1192 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1193 {
1194         struct btusb_data *data = hci_get_drvdata(hdev);
1195         struct urb *urb;
1196         unsigned int pipe;
1197
1198         if (!data->bulk_tx_ep)
1199                 return ERR_PTR(-ENODEV);
1200
1201         urb = usb_alloc_urb(0, GFP_KERNEL);
1202         if (!urb)
1203                 return ERR_PTR(-ENOMEM);
1204
1205         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1206
1207         usb_fill_bulk_urb(urb, data->udev, pipe,
1208                           skb->data, skb->len, btusb_tx_complete, skb);
1209
1210         skb->dev = (void *)hdev;
1211
1212         return urb;
1213 }
1214
1215 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1216 {
1217         struct btusb_data *data = hci_get_drvdata(hdev);
1218         struct urb *urb;
1219         unsigned int pipe;
1220
1221         if (!data->isoc_tx_ep)
1222                 return ERR_PTR(-ENODEV);
1223
1224         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1225         if (!urb)
1226                 return ERR_PTR(-ENOMEM);
1227
1228         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1229
1230         usb_fill_int_urb(urb, data->udev, pipe,
1231                          skb->data, skb->len, btusb_isoc_tx_complete,
1232                          skb, data->isoc_tx_ep->bInterval);
1233
1234         urb->transfer_flags  = URB_ISO_ASAP;
1235
1236         __fill_isoc_descriptor(urb, skb->len,
1237                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1238
1239         skb->dev = (void *)hdev;
1240
1241         return urb;
1242 }
1243
1244 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1245 {
1246         struct btusb_data *data = hci_get_drvdata(hdev);
1247         int err;
1248
1249         usb_anchor_urb(urb, &data->tx_anchor);
1250
1251         err = usb_submit_urb(urb, GFP_KERNEL);
1252         if (err < 0) {
1253                 if (err != -EPERM && err != -ENODEV)
1254                         BT_ERR("%s urb %p submission failed (%d)",
1255                                hdev->name, urb, -err);
1256                 kfree(urb->setup_packet);
1257                 usb_unanchor_urb(urb);
1258         } else {
1259                 usb_mark_last_busy(data->udev);
1260         }
1261
1262         usb_free_urb(urb);
1263         return err;
1264 }
1265
1266 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1267 {
1268         struct btusb_data *data = hci_get_drvdata(hdev);
1269         unsigned long flags;
1270         bool suspending;
1271
1272         spin_lock_irqsave(&data->txlock, flags);
1273         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1274         if (!suspending)
1275                 data->tx_in_flight++;
1276         spin_unlock_irqrestore(&data->txlock, flags);
1277
1278         if (!suspending)
1279                 return submit_tx_urb(hdev, urb);
1280
1281         usb_anchor_urb(urb, &data->deferred);
1282         schedule_work(&data->waker);
1283
1284         usb_free_urb(urb);
1285         return 0;
1286 }
1287
1288 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1289 {
1290         struct urb *urb;
1291
1292         BT_DBG("%s", hdev->name);
1293
1294         switch (hci_skb_pkt_type(skb)) {
1295         case HCI_COMMAND_PKT:
1296                 urb = alloc_ctrl_urb(hdev, skb);
1297                 if (IS_ERR(urb))
1298                         return PTR_ERR(urb);
1299
1300                 hdev->stat.cmd_tx++;
1301                 return submit_or_queue_tx_urb(hdev, urb);
1302
1303         case HCI_ACLDATA_PKT:
1304                 urb = alloc_bulk_urb(hdev, skb);
1305                 if (IS_ERR(urb))
1306                         return PTR_ERR(urb);
1307
1308                 hdev->stat.acl_tx++;
1309                 return submit_or_queue_tx_urb(hdev, urb);
1310
1311         case HCI_SCODATA_PKT:
1312                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1313                         return -ENODEV;
1314
1315                 urb = alloc_isoc_urb(hdev, skb);
1316                 if (IS_ERR(urb))
1317                         return PTR_ERR(urb);
1318
1319                 hdev->stat.sco_tx++;
1320                 return submit_tx_urb(hdev, urb);
1321         }
1322
1323         return -EILSEQ;
1324 }
1325
1326 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1327 {
1328         struct btusb_data *data = hci_get_drvdata(hdev);
1329
1330         BT_DBG("%s evt %d", hdev->name, evt);
1331
1332         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1333                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1334                 schedule_work(&data->work);
1335         }
1336 }
1337
1338 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1339 {
1340         struct btusb_data *data = hci_get_drvdata(hdev);
1341         struct usb_interface *intf = data->isoc;
1342         struct usb_endpoint_descriptor *ep_desc;
1343         int i, err;
1344
1345         if (!data->isoc)
1346                 return -ENODEV;
1347
1348         err = usb_set_interface(data->udev, 1, altsetting);
1349         if (err < 0) {
1350                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1351                 return err;
1352         }
1353
1354         data->isoc_altsetting = altsetting;
1355
1356         data->isoc_tx_ep = NULL;
1357         data->isoc_rx_ep = NULL;
1358
1359         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1360                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1361
1362                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1363                         data->isoc_tx_ep = ep_desc;
1364                         continue;
1365                 }
1366
1367                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1368                         data->isoc_rx_ep = ep_desc;
1369                         continue;
1370                 }
1371         }
1372
1373         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1374                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1375                 return -ENODEV;
1376         }
1377
1378         return 0;
1379 }
1380
1381 static void btusb_work(struct work_struct *work)
1382 {
1383         struct btusb_data *data = container_of(work, struct btusb_data, work);
1384         struct hci_dev *hdev = data->hdev;
1385         int new_alts;
1386         int err;
1387
1388         if (data->sco_num > 0) {
1389                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1390                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1391                         if (err < 0) {
1392                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1393                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1394                                 return;
1395                         }
1396
1397                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1398                 }
1399
1400                 if (hdev->voice_setting & 0x0020) {
1401                         static const int alts[3] = { 2, 4, 5 };
1402
1403                         new_alts = alts[data->sco_num - 1];
1404                 } else {
1405                         new_alts = data->sco_num;
1406                 }
1407
1408                 if (data->isoc_altsetting != new_alts) {
1409                         unsigned long flags;
1410
1411                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1412                         usb_kill_anchored_urbs(&data->isoc_anchor);
1413
1414                         /* When isochronous alternate setting needs to be
1415                          * changed, because SCO connection has been added
1416                          * or removed, a packet fragment may be left in the
1417                          * reassembling state. This could lead to wrongly
1418                          * assembled fragments.
1419                          *
1420                          * Clear outstanding fragment when selecting a new
1421                          * alternate setting.
1422                          */
1423                         spin_lock_irqsave(&data->rxlock, flags);
1424                         kfree_skb(data->sco_skb);
1425                         data->sco_skb = NULL;
1426                         spin_unlock_irqrestore(&data->rxlock, flags);
1427
1428                         if (__set_isoc_interface(hdev, new_alts) < 0)
1429                                 return;
1430                 }
1431
1432                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1433                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1434                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1435                         else
1436                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1437                 }
1438         } else {
1439                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1440                 usb_kill_anchored_urbs(&data->isoc_anchor);
1441
1442                 __set_isoc_interface(hdev, 0);
1443                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1444                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1445         }
1446 }
1447
1448 static void btusb_waker(struct work_struct *work)
1449 {
1450         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1451         int err;
1452
1453         err = usb_autopm_get_interface(data->intf);
1454         if (err < 0)
1455                 return;
1456
1457         usb_autopm_put_interface(data->intf);
1458 }
1459
1460 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1461 {
1462         struct sk_buff *skb;
1463         u8 val = 0x00;
1464
1465         BT_DBG("%s", hdev->name);
1466
1467         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1468         if (IS_ERR(skb))
1469                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1470         else
1471                 kfree_skb(skb);
1472
1473         return 0;
1474 }
1475
1476 static int btusb_setup_csr(struct hci_dev *hdev)
1477 {
1478         struct hci_rp_read_local_version *rp;
1479         struct sk_buff *skb;
1480
1481         BT_DBG("%s", hdev->name);
1482
1483         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1484                              HCI_INIT_TIMEOUT);
1485         if (IS_ERR(skb)) {
1486                 int err = PTR_ERR(skb);
1487                 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1488                 return err;
1489         }
1490
1491         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1492                 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1493                 kfree_skb(skb);
1494                 return -EIO;
1495         }
1496
1497         rp = (struct hci_rp_read_local_version *)skb->data;
1498
1499         /* Detect controllers which aren't real CSR ones. */
1500         if (le16_to_cpu(rp->manufacturer) != 10 ||
1501             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1502                 /* Clear the reset quirk since this is not an actual
1503                  * early Bluetooth 1.1 device from CSR.
1504                  */
1505                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1506
1507                 /* These fake CSR controllers have all a broken
1508                  * stored link key handling and so just disable it.
1509                  */
1510                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1511         }
1512
1513         kfree_skb(skb);
1514
1515         return 0;
1516 }
1517
1518 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1519                                                        struct intel_version *ver)
1520 {
1521         const struct firmware *fw;
1522         char fwname[64];
1523         int ret;
1524
1525         snprintf(fwname, sizeof(fwname),
1526                  "/*(DEBLOBBED)*/",
1527                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1528                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1529                  ver->fw_build_ww, ver->fw_build_yy);
1530
1531         ret = reject_firmware(&fw, fwname, &hdev->dev);
1532         if (ret < 0) {
1533                 if (ret == -EINVAL) {
1534                         BT_ERR("%s Intel firmware file request failed (%d)",
1535                                hdev->name, ret);
1536                         return NULL;
1537                 }
1538
1539                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1540                        hdev->name, fwname, ret);
1541
1542                 /* If the correct firmware patch file is not found, use the
1543                  * default firmware patch file instead
1544                  */
1545                 snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/",
1546                          ver->hw_platform, ver->hw_variant);
1547                 if (reject_firmware(&fw, fwname, &hdev->dev) < 0) {
1548                         BT_ERR("%s failed to open default Intel fw file: %s",
1549                                hdev->name, fwname);
1550                         return NULL;
1551                 }
1552         }
1553
1554         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1555
1556         return fw;
1557 }
1558
1559 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1560                                       const struct firmware *fw,
1561                                       const u8 **fw_ptr, int *disable_patch)
1562 {
1563         struct sk_buff *skb;
1564         struct hci_command_hdr *cmd;
1565         const u8 *cmd_param;
1566         struct hci_event_hdr *evt = NULL;
1567         const u8 *evt_param = NULL;
1568         int remain = fw->size - (*fw_ptr - fw->data);
1569
1570         /* The first byte indicates the types of the patch command or event.
1571          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1572          * in the current firmware buffer doesn't start with 0x01 or
1573          * the size of remain buffer is smaller than HCI command header,
1574          * the firmware file is corrupted and it should stop the patching
1575          * process.
1576          */
1577         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1578                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1579                 return -EINVAL;
1580         }
1581         (*fw_ptr)++;
1582         remain--;
1583
1584         cmd = (struct hci_command_hdr *)(*fw_ptr);
1585         *fw_ptr += sizeof(*cmd);
1586         remain -= sizeof(*cmd);
1587
1588         /* Ensure that the remain firmware data is long enough than the length
1589          * of command parameter. If not, the firmware file is corrupted.
1590          */
1591         if (remain < cmd->plen) {
1592                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1593                 return -EFAULT;
1594         }
1595
1596         /* If there is a command that loads a patch in the firmware
1597          * file, then enable the patch upon success, otherwise just
1598          * disable the manufacturer mode, for example patch activation
1599          * is not required when the default firmware patch file is used
1600          * because there are no patch data to load.
1601          */
1602         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1603                 *disable_patch = 0;
1604
1605         cmd_param = *fw_ptr;
1606         *fw_ptr += cmd->plen;
1607         remain -= cmd->plen;
1608
1609         /* This reads the expected events when the above command is sent to the
1610          * device. Some vendor commands expects more than one events, for
1611          * example command status event followed by vendor specific event.
1612          * For this case, it only keeps the last expected event. so the command
1613          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1614          * last expected event.
1615          */
1616         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1617                 (*fw_ptr)++;
1618                 remain--;
1619
1620                 evt = (struct hci_event_hdr *)(*fw_ptr);
1621                 *fw_ptr += sizeof(*evt);
1622                 remain -= sizeof(*evt);
1623
1624                 if (remain < evt->plen) {
1625                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1626                                hdev->name);
1627                         return -EFAULT;
1628                 }
1629
1630                 evt_param = *fw_ptr;
1631                 *fw_ptr += evt->plen;
1632                 remain -= evt->plen;
1633         }
1634
1635         /* Every HCI commands in the firmware file has its correspond event.
1636          * If event is not found or remain is smaller than zero, the firmware
1637          * file is corrupted.
1638          */
1639         if (!evt || !evt_param || remain < 0) {
1640                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1641                 return -EFAULT;
1642         }
1643
1644         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1645                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1646         if (IS_ERR(skb)) {
1647                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1648                        hdev->name, cmd->opcode, PTR_ERR(skb));
1649                 return PTR_ERR(skb);
1650         }
1651
1652         /* It ensures that the returned event matches the event data read from
1653          * the firmware file. At fist, it checks the length and then
1654          * the contents of the event.
1655          */
1656         if (skb->len != evt->plen) {
1657                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1658                        le16_to_cpu(cmd->opcode));
1659                 kfree_skb(skb);
1660                 return -EFAULT;
1661         }
1662
1663         if (memcmp(skb->data, evt_param, evt->plen)) {
1664                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1665                        hdev->name, le16_to_cpu(cmd->opcode));
1666                 kfree_skb(skb);
1667                 return -EFAULT;
1668         }
1669         kfree_skb(skb);
1670
1671         return 0;
1672 }
1673
1674 static int btusb_setup_intel(struct hci_dev *hdev)
1675 {
1676         struct sk_buff *skb;
1677         const struct firmware *fw;
1678         const u8 *fw_ptr;
1679         int disable_patch, err;
1680         struct intel_version ver;
1681
1682         BT_DBG("%s", hdev->name);
1683
1684         /* The controller has a bug with the first HCI command sent to it
1685          * returning number of completed commands as zero. This would stall the
1686          * command processing in the Bluetooth core.
1687          *
1688          * As a workaround, send HCI Reset command first which will reset the
1689          * number of completed commands and allow normal command processing
1690          * from now on.
1691          */
1692         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1693         if (IS_ERR(skb)) {
1694                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1695                        hdev->name, PTR_ERR(skb));
1696                 return PTR_ERR(skb);
1697         }
1698         kfree_skb(skb);
1699
1700         /* Read Intel specific controller version first to allow selection of
1701          * which firmware file to load.
1702          *
1703          * The returned information are hardware variant and revision plus
1704          * firmware variant, revision and build number.
1705          */
1706         err = btintel_read_version(hdev, &ver);
1707         if (err)
1708                 return err;
1709
1710         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1711                 hdev->name, ver.hw_platform, ver.hw_variant, ver.hw_revision,
1712                 ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1713                 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1714
1715         /* fw_patch_num indicates the version of patch the device currently
1716          * have. If there is no patch data in the device, it is always 0x00.
1717          * So, if it is other than 0x00, no need to patch the device again.
1718          */
1719         if (ver.fw_patch_num) {
1720                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1721                         hdev->name, ver.fw_patch_num);
1722                 goto complete;
1723         }
1724
1725         /* Opens the firmware patch file based on the firmware version read
1726          * from the controller. If it fails to open the matching firmware
1727          * patch file, it tries to open the default firmware patch file.
1728          * If no patch file is found, allow the device to operate without
1729          * a patch.
1730          */
1731         fw = btusb_setup_intel_get_fw(hdev, &ver);
1732         if (!fw)
1733                 goto complete;
1734         fw_ptr = fw->data;
1735
1736         /* Enable the manufacturer mode of the controller.
1737          * Only while this mode is enabled, the driver can download the
1738          * firmware patch data and configuration parameters.
1739          */
1740         err = btintel_enter_mfg(hdev);
1741         if (err) {
1742                 release_firmware(fw);
1743                 return err;
1744         }
1745
1746         disable_patch = 1;
1747
1748         /* The firmware data file consists of list of Intel specific HCI
1749          * commands and its expected events. The first byte indicates the
1750          * type of the message, either HCI command or HCI event.
1751          *
1752          * It reads the command and its expected event from the firmware file,
1753          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1754          * the returned event is compared with the event read from the firmware
1755          * file and it will continue until all the messages are downloaded to
1756          * the controller.
1757          *
1758          * Once the firmware patching is completed successfully,
1759          * the manufacturer mode is disabled with reset and activating the
1760          * downloaded patch.
1761          *
1762          * If the firmware patching fails, the manufacturer mode is
1763          * disabled with reset and deactivating the patch.
1764          *
1765          * If the default patch file is used, no reset is done when disabling
1766          * the manufacturer.
1767          */
1768         while (fw->size > fw_ptr - fw->data) {
1769                 int ret;
1770
1771                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1772                                                  &disable_patch);
1773                 if (ret < 0)
1774                         goto exit_mfg_deactivate;
1775         }
1776
1777         release_firmware(fw);
1778
1779         if (disable_patch)
1780                 goto exit_mfg_disable;
1781
1782         /* Patching completed successfully and disable the manufacturer mode
1783          * with reset and activate the downloaded firmware patches.
1784          */
1785         err = btintel_exit_mfg(hdev, true, true);
1786         if (err)
1787                 return err;
1788
1789         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1790                 hdev->name);
1791
1792         goto complete;
1793
1794 exit_mfg_disable:
1795         /* Disable the manufacturer mode without reset */
1796         err = btintel_exit_mfg(hdev, false, false);
1797         if (err)
1798                 return err;
1799
1800         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1801
1802         goto complete;
1803
1804 exit_mfg_deactivate:
1805         release_firmware(fw);
1806
1807         /* Patching failed. Disable the manufacturer mode with reset and
1808          * deactivate the downloaded firmware patches.
1809          */
1810         err = btintel_exit_mfg(hdev, true, false);
1811         if (err)
1812                 return err;
1813
1814         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1815                 hdev->name);
1816
1817 complete:
1818         /* Set the event mask for Intel specific vendor events. This enables
1819          * a few extra events that are useful during general operation.
1820          */
1821         btintel_set_event_mask_mfg(hdev, false);
1822
1823         btintel_check_bdaddr(hdev);
1824         return 0;
1825 }
1826
1827 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1828 {
1829         struct sk_buff *skb;
1830         struct hci_event_hdr *hdr;
1831         struct hci_ev_cmd_complete *evt;
1832
1833         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1834         if (!skb)
1835                 return -ENOMEM;
1836
1837         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1838         hdr->evt = HCI_EV_CMD_COMPLETE;
1839         hdr->plen = sizeof(*evt) + 1;
1840
1841         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1842         evt->ncmd = 0x01;
1843         evt->opcode = cpu_to_le16(opcode);
1844
1845         *skb_put(skb, 1) = 0x00;
1846
1847         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1848
1849         return hci_recv_frame(hdev, skb);
1850 }
1851
1852 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1853                                  int count)
1854 {
1855         /* When the device is in bootloader mode, then it can send
1856          * events via the bulk endpoint. These events are treated the
1857          * same way as the ones received from the interrupt endpoint.
1858          */
1859         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1860                 return btusb_recv_intr(data, buffer, count);
1861
1862         return btusb_recv_bulk(data, buffer, count);
1863 }
1864
1865 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1866                                unsigned int len)
1867 {
1868         const struct intel_bootup *evt = ptr;
1869
1870         if (len != sizeof(*evt))
1871                 return;
1872
1873         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1874                 smp_mb__after_atomic();
1875                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1876         }
1877 }
1878
1879 static void btusb_intel_secure_send_result(struct btusb_data *data,
1880                                            const void *ptr, unsigned int len)
1881 {
1882         const struct intel_secure_send_result *evt = ptr;
1883
1884         if (len != sizeof(*evt))
1885                 return;
1886
1887         if (evt->result)
1888                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1889
1890         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1891             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1892                 smp_mb__after_atomic();
1893                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1894         }
1895 }
1896
1897 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1898 {
1899         struct btusb_data *data = hci_get_drvdata(hdev);
1900
1901         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1902                 struct hci_event_hdr *hdr = (void *)skb->data;
1903
1904                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1905                     hdr->plen > 0) {
1906                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1907                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1908
1909                         switch (skb->data[2]) {
1910                         case 0x02:
1911                                 /* When switching to the operational firmware
1912                                  * the device sends a vendor specific event
1913                                  * indicating that the bootup completed.
1914                                  */
1915                                 btusb_intel_bootup(data, ptr, len);
1916                                 break;
1917                         case 0x06:
1918                                 /* When the firmware loading completes the
1919                                  * device sends out a vendor specific event
1920                                  * indicating the result of the firmware
1921                                  * loading.
1922                                  */
1923                                 btusb_intel_secure_send_result(data, ptr, len);
1924                                 break;
1925                         }
1926                 }
1927         }
1928
1929         return hci_recv_frame(hdev, skb);
1930 }
1931
1932 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1933 {
1934         struct btusb_data *data = hci_get_drvdata(hdev);
1935         struct urb *urb;
1936
1937         BT_DBG("%s", hdev->name);
1938
1939         switch (hci_skb_pkt_type(skb)) {
1940         case HCI_COMMAND_PKT:
1941                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1942                         struct hci_command_hdr *cmd = (void *)skb->data;
1943                         __u16 opcode = le16_to_cpu(cmd->opcode);
1944
1945                         /* When in bootloader mode and the command 0xfc09
1946                          * is received, it needs to be send down the
1947                          * bulk endpoint. So allocate a bulk URB instead.
1948                          */
1949                         if (opcode == 0xfc09)
1950                                 urb = alloc_bulk_urb(hdev, skb);
1951                         else
1952                                 urb = alloc_ctrl_urb(hdev, skb);
1953
1954                         /* When the 0xfc01 command is issued to boot into
1955                          * the operational firmware, it will actually not
1956                          * send a command complete event. To keep the flow
1957                          * control working inject that event here.
1958                          */
1959                         if (opcode == 0xfc01)
1960                                 inject_cmd_complete(hdev, opcode);
1961                 } else {
1962                         urb = alloc_ctrl_urb(hdev, skb);
1963                 }
1964                 if (IS_ERR(urb))
1965                         return PTR_ERR(urb);
1966
1967                 hdev->stat.cmd_tx++;
1968                 return submit_or_queue_tx_urb(hdev, urb);
1969
1970         case HCI_ACLDATA_PKT:
1971                 urb = alloc_bulk_urb(hdev, skb);
1972                 if (IS_ERR(urb))
1973                         return PTR_ERR(urb);
1974
1975                 hdev->stat.acl_tx++;
1976                 return submit_or_queue_tx_urb(hdev, urb);
1977
1978         case HCI_SCODATA_PKT:
1979                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1980                         return -ENODEV;
1981
1982                 urb = alloc_isoc_urb(hdev, skb);
1983                 if (IS_ERR(urb))
1984                         return PTR_ERR(urb);
1985
1986                 hdev->stat.sco_tx++;
1987                 return submit_tx_urb(hdev, urb);
1988         }
1989
1990         return -EILSEQ;
1991 }
1992
1993 static int btusb_setup_intel_new(struct hci_dev *hdev)
1994 {
1995         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1996                                           0x00, 0x08, 0x04, 0x00 };
1997         struct btusb_data *data = hci_get_drvdata(hdev);
1998         struct sk_buff *skb;
1999         struct intel_version ver;
2000         struct intel_boot_params *params;
2001         const struct firmware *fw;
2002         const u8 *fw_ptr;
2003         u32 frag_len;
2004         char fwname[64];
2005         ktime_t calltime, delta, rettime;
2006         unsigned long long duration;
2007         int err;
2008
2009         BT_DBG("%s", hdev->name);
2010
2011         calltime = ktime_get();
2012
2013         /* Read the Intel version information to determine if the device
2014          * is in bootloader mode or if it already has operational firmware
2015          * loaded.
2016          */
2017         err = btintel_read_version(hdev, &ver);
2018         if (err)
2019                 return err;
2020
2021         /* The hardware platform number has a fixed value of 0x37 and
2022          * for now only accept this single value.
2023          */
2024         if (ver.hw_platform != 0x37) {
2025                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2026                        hdev->name, ver.hw_platform);
2027                 return -EINVAL;
2028         }
2029
2030         /* At the moment the iBT 3.0 hardware variants 0x0b (LnP/SfP)
2031          * and 0x0c (WsP) are supported by this firmware loading method.
2032          *
2033          * This check has been put in place to ensure correct forward
2034          * compatibility options when newer hardware variants come along.
2035          */
2036         if (ver.hw_variant != 0x0b && ver.hw_variant != 0x0c) {
2037                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2038                        hdev->name, ver.hw_variant);
2039                 return -EINVAL;
2040         }
2041
2042         btintel_version_info(hdev, &ver);
2043
2044         /* The firmware variant determines if the device is in bootloader
2045          * mode or is running operational firmware. The value 0x06 identifies
2046          * the bootloader and the value 0x23 identifies the operational
2047          * firmware.
2048          *
2049          * When the operational firmware is already present, then only
2050          * the check for valid Bluetooth device address is needed. This
2051          * determines if the device will be added as configured or
2052          * unconfigured controller.
2053          *
2054          * It is not possible to use the Secure Boot Parameters in this
2055          * case since that command is only available in bootloader mode.
2056          */
2057         if (ver.fw_variant == 0x23) {
2058                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2059                 btintel_check_bdaddr(hdev);
2060                 return 0;
2061         }
2062
2063         /* If the device is not in bootloader mode, then the only possible
2064          * choice is to return an error and abort the device initialization.
2065          */
2066         if (ver.fw_variant != 0x06) {
2067                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2068                        hdev->name, ver.fw_variant);
2069                 return -ENODEV;
2070         }
2071
2072         /* Read the secure boot parameters to identify the operating
2073          * details of the bootloader.
2074          */
2075         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2076         if (IS_ERR(skb)) {
2077                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2078                        hdev->name, PTR_ERR(skb));
2079                 return PTR_ERR(skb);
2080         }
2081
2082         if (skb->len != sizeof(*params)) {
2083                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2084                 kfree_skb(skb);
2085                 return -EILSEQ;
2086         }
2087
2088         params = (struct intel_boot_params *)skb->data;
2089
2090         BT_INFO("%s: Device revision is %u", hdev->name,
2091                 le16_to_cpu(params->dev_revid));
2092
2093         BT_INFO("%s: Secure boot is %s", hdev->name,
2094                 params->secure_boot ? "enabled" : "disabled");
2095
2096         BT_INFO("%s: OTP lock is %s", hdev->name,
2097                 params->otp_lock ? "enabled" : "disabled");
2098
2099         BT_INFO("%s: API lock is %s", hdev->name,
2100                 params->api_lock ? "enabled" : "disabled");
2101
2102         BT_INFO("%s: Debug lock is %s", hdev->name,
2103                 params->debug_lock ? "enabled" : "disabled");
2104
2105         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2106                 params->min_fw_build_nn, params->min_fw_build_cw,
2107                 2000 + params->min_fw_build_yy);
2108
2109         /* It is required that every single firmware fragment is acknowledged
2110          * with a command complete event. If the boot parameters indicate
2111          * that this bootloader does not send them, then abort the setup.
2112          */
2113         if (params->limited_cce != 0x00) {
2114                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2115                        hdev->name, params->limited_cce);
2116                 kfree_skb(skb);
2117                 return -EINVAL;
2118         }
2119
2120         /* If the OTP has no valid Bluetooth device address, then there will
2121          * also be no valid address for the operational firmware.
2122          */
2123         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2124                 BT_INFO("%s: No device address configured", hdev->name);
2125                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2126         }
2127
2128         /* With this Intel bootloader only the hardware variant and device
2129          * revision information are used to select the right firmware.
2130          *
2131          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2132          *
2133          * Currently the supported hardware variants are:
2134          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2135          *   12 (0x0c) for iBT3.5 (WsP)
2136          */
2137         snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/",
2138                  le16_to_cpu(ver.hw_variant),
2139                  le16_to_cpu(params->dev_revid));
2140
2141         err = reject_firmware(&fw, fwname, &hdev->dev);
2142         if (err < 0) {
2143                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2144                        hdev->name, err);
2145                 kfree_skb(skb);
2146                 return err;
2147         }
2148
2149         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2150
2151         /* Save the DDC file name for later use to apply once the firmware
2152          * downloading is done.
2153          */
2154         snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.ddc",
2155                  le16_to_cpu(ver.hw_variant),
2156                  le16_to_cpu(params->dev_revid));
2157
2158         kfree_skb(skb);
2159
2160         if (fw->size < 644) {
2161                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2162                        hdev->name, fw->size);
2163                 err = -EBADF;
2164                 goto done;
2165         }
2166
2167         set_bit(BTUSB_DOWNLOADING, &data->flags);
2168
2169         /* Start the firmware download transaction with the Init fragment
2170          * represented by the 128 bytes of CSS header.
2171          */
2172         err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2173         if (err < 0) {
2174                 BT_ERR("%s: Failed to send firmware header (%d)",
2175                        hdev->name, err);
2176                 goto done;
2177         }
2178
2179         /* Send the 256 bytes of public key information from the firmware
2180          * as the PKey fragment.
2181          */
2182         err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2183         if (err < 0) {
2184                 BT_ERR("%s: Failed to send firmware public key (%d)",
2185                        hdev->name, err);
2186                 goto done;
2187         }
2188
2189         /* Send the 256 bytes of signature information from the firmware
2190          * as the Sign fragment.
2191          */
2192         err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2193         if (err < 0) {
2194                 BT_ERR("%s: Failed to send firmware signature (%d)",
2195                        hdev->name, err);
2196                 goto done;
2197         }
2198
2199         fw_ptr = fw->data + 644;
2200         frag_len = 0;
2201
2202         while (fw_ptr - fw->data < fw->size) {
2203                 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2204
2205                 frag_len += sizeof(*cmd) + cmd->plen;
2206
2207                 /* The parameter length of the secure send command requires
2208                  * a 4 byte alignment. It happens so that the firmware file
2209                  * contains proper Intel_NOP commands to align the fragments
2210                  * as needed.
2211                  *
2212                  * Send set of commands with 4 byte alignment from the
2213                  * firmware data buffer as a single Data fragement.
2214                  */
2215                 if (!(frag_len % 4)) {
2216                         err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2217                         if (err < 0) {
2218                                 BT_ERR("%s: Failed to send firmware data (%d)",
2219                                        hdev->name, err);
2220                                 goto done;
2221                         }
2222
2223                         fw_ptr += frag_len;
2224                         frag_len = 0;
2225                 }
2226         }
2227
2228         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2229
2230         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2231
2232         /* Before switching the device into operational mode and with that
2233          * booting the loaded firmware, wait for the bootloader notification
2234          * that all fragments have been successfully received.
2235          *
2236          * When the event processing receives the notification, then the
2237          * BTUSB_DOWNLOADING flag will be cleared.
2238          *
2239          * The firmware loading should not take longer than 5 seconds
2240          * and thus just timeout if that happens and fail the setup
2241          * of this device.
2242          */
2243         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2244                                   TASK_INTERRUPTIBLE,
2245                                   msecs_to_jiffies(5000));
2246         if (err == -EINTR) {
2247                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2248                 goto done;
2249         }
2250
2251         if (err) {
2252                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2253                 err = -ETIMEDOUT;
2254                 goto done;
2255         }
2256
2257         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2258                 BT_ERR("%s: Firmware loading failed", hdev->name);
2259                 err = -ENOEXEC;
2260                 goto done;
2261         }
2262
2263         rettime = ktime_get();
2264         delta = ktime_sub(rettime, calltime);
2265         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2266
2267         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2268
2269 done:
2270         release_firmware(fw);
2271
2272         if (err < 0)
2273                 return err;
2274
2275         calltime = ktime_get();
2276
2277         set_bit(BTUSB_BOOTING, &data->flags);
2278
2279         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2280                              HCI_INIT_TIMEOUT);
2281         if (IS_ERR(skb))
2282                 return PTR_ERR(skb);
2283
2284         kfree_skb(skb);
2285
2286         /* The bootloader will not indicate when the device is ready. This
2287          * is done by the operational firmware sending bootup notification.
2288          *
2289          * Booting into operational firmware should not take longer than
2290          * 1 second. However if that happens, then just fail the setup
2291          * since something went wrong.
2292          */
2293         BT_INFO("%s: Waiting for device to boot", hdev->name);
2294
2295         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2296                                   TASK_INTERRUPTIBLE,
2297                                   msecs_to_jiffies(1000));
2298
2299         if (err == -EINTR) {
2300                 BT_ERR("%s: Device boot interrupted", hdev->name);
2301                 return -EINTR;
2302         }
2303
2304         if (err) {
2305                 BT_ERR("%s: Device boot timeout", hdev->name);
2306                 return -ETIMEDOUT;
2307         }
2308
2309         rettime = ktime_get();
2310         delta = ktime_sub(rettime, calltime);
2311         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2312
2313         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2314
2315         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2316
2317         /* Once the device is running in operational mode, it needs to apply
2318          * the device configuration (DDC) parameters.
2319          *
2320          * The device can work without DDC parameters, so even if it fails
2321          * to load the file, no need to fail the setup.
2322          */
2323         btintel_load_ddc_config(hdev, fwname);
2324
2325         /* Set the event mask for Intel specific vendor events. This enables
2326          * a few extra events that are useful during general operation. It
2327          * does not enable any debugging related events.
2328          *
2329          * The device will function correctly without these events enabled
2330          * and thus no need to fail the setup.
2331          */
2332         btintel_set_event_mask(hdev, false);
2333
2334         return 0;
2335 }
2336
2337 static int btusb_shutdown_intel(struct hci_dev *hdev)
2338 {
2339         struct sk_buff *skb;
2340         long ret;
2341
2342         /* Some platforms have an issue with BT LED when the interface is
2343          * down or BT radio is turned off, which takes 5 seconds to BT LED
2344          * goes off. This command turns off the BT LED immediately.
2345          */
2346         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2347         if (IS_ERR(skb)) {
2348                 ret = PTR_ERR(skb);
2349                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2350                        hdev->name, ret);
2351                 return ret;
2352         }
2353         kfree_skb(skb);
2354
2355         return 0;
2356 }
2357
2358 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2359                                     const bdaddr_t *bdaddr)
2360 {
2361         struct sk_buff *skb;
2362         u8 buf[8];
2363         long ret;
2364
2365         buf[0] = 0xfe;
2366         buf[1] = sizeof(bdaddr_t);
2367         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2368
2369         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2370         if (IS_ERR(skb)) {
2371                 ret = PTR_ERR(skb);
2372                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2373                        hdev->name, ret);
2374                 return ret;
2375         }
2376         kfree_skb(skb);
2377
2378         return 0;
2379 }
2380
2381 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2382                                     const bdaddr_t *bdaddr)
2383 {
2384         struct sk_buff *skb;
2385         u8 buf[10];
2386         long ret;
2387
2388         buf[0] = 0x01;
2389         buf[1] = 0x01;
2390         buf[2] = 0x00;
2391         buf[3] = sizeof(bdaddr_t);
2392         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2393
2394         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2395         if (IS_ERR(skb)) {
2396                 ret = PTR_ERR(skb);
2397                 BT_ERR("%s: Change address command failed (%ld)",
2398                        hdev->name, ret);
2399                 return ret;
2400         }
2401         kfree_skb(skb);
2402
2403         return 0;
2404 }
2405
2406 #define QCA_DFU_PACKET_LEN      4096
2407
2408 #define QCA_GET_TARGET_VERSION  0x09
2409 #define QCA_CHECK_STATUS        0x05
2410 #define QCA_DFU_DOWNLOAD        0x01
2411
2412 #define QCA_SYSCFG_UPDATED      0x40
2413 #define QCA_PATCH_UPDATED       0x80
2414 #define QCA_DFU_TIMEOUT         3000
2415
2416 struct qca_version {
2417         __le32  rom_version;
2418         __le32  patch_version;
2419         __le32  ram_version;
2420         __le32  ref_clock;
2421         __u8    reserved[4];
2422 } __packed;
2423
2424 struct qca_rampatch_version {
2425         __le16  rom_version;
2426         __le16  patch_version;
2427 } __packed;
2428
2429 struct qca_device_info {
2430         u32     rom_version;
2431         u8      rampatch_hdr;   /* length of header in rampatch */
2432         u8      nvm_hdr;        /* length of header in NVM */
2433         u8      ver_offset;     /* offset of version structure in rampatch */
2434 };
2435
2436 static const struct qca_device_info qca_devices_table[] = {
2437         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2438         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2439         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2440         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2441         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2442         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2443 };
2444
2445 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
2446                                      void *data, u16 size)
2447 {
2448         int pipe, err;
2449         u8 *buf;
2450
2451         buf = kmalloc(size, GFP_KERNEL);
2452         if (!buf)
2453                 return -ENOMEM;
2454
2455         /* Found some of USB hosts have IOT issues with ours so that we should
2456          * not wait until HCI layer is ready.
2457          */
2458         pipe = usb_rcvctrlpipe(udev, 0);
2459         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2460                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2461         if (err < 0) {
2462                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
2463                 goto done;
2464         }
2465
2466         memcpy(data, buf, size);
2467
2468 done:
2469         kfree(buf);
2470
2471         return err;
2472 }
2473
2474 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2475                                        const struct firmware *firmware,
2476                                        size_t hdr_size)
2477 {
2478         struct btusb_data *btdata = hci_get_drvdata(hdev);
2479         struct usb_device *udev = btdata->udev;
2480         size_t count, size, sent = 0;
2481         int pipe, len, err;
2482         u8 *buf;
2483
2484         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2485         if (!buf)
2486                 return -ENOMEM;
2487
2488         count = firmware->size;
2489
2490         size = min_t(size_t, count, hdr_size);
2491         memcpy(buf, firmware->data, size);
2492
2493         /* USB patches should go down to controller through USB path
2494          * because binary format fits to go down through USB channel.
2495          * USB control path is for patching headers and USB bulk is for
2496          * patch body.
2497          */
2498         pipe = usb_sndctrlpipe(udev, 0);
2499         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2500                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2501         if (err < 0) {
2502                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2503                 goto done;
2504         }
2505
2506         sent += size;
2507         count -= size;
2508
2509         /* ep2 need time to switch from function acl to function dfu,
2510          * so we add 20ms delay here.
2511          */
2512         msleep(20);
2513
2514         while (count) {
2515                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2516
2517                 memcpy(buf, firmware->data + sent, size);
2518
2519                 pipe = usb_sndbulkpipe(udev, 0x02);
2520                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2521                                    QCA_DFU_TIMEOUT);
2522                 if (err < 0) {
2523                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2524                                hdev->name, sent, firmware->size, err);
2525                         break;
2526                 }
2527
2528                 if (size != len) {
2529                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2530                         err = -EILSEQ;
2531                         break;
2532                 }
2533
2534                 sent  += size;
2535                 count -= size;
2536         }
2537
2538 done:
2539         kfree(buf);
2540         return err;
2541 }
2542
2543 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2544                                          struct qca_version *ver,
2545                                          const struct qca_device_info *info)
2546 {
2547         struct qca_rampatch_version *rver;
2548         const struct firmware *fw;
2549         u32 ver_rom, ver_patch;
2550         u16 rver_rom, rver_patch;
2551         char fwname[64];
2552         int err;
2553
2554         ver_rom = le32_to_cpu(ver->rom_version);
2555         ver_patch = le32_to_cpu(ver->patch_version);
2556
2557         snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/", ver_rom);
2558
2559         err = reject_firmware(&fw, fwname, &hdev->dev);
2560         if (err) {
2561                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2562                        hdev->name, fwname, err);
2563                 return err;
2564         }
2565
2566         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2567
2568         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2569         rver_rom = le16_to_cpu(rver->rom_version);
2570         rver_patch = le16_to_cpu(rver->patch_version);
2571
2572         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2573                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2574                 ver_patch);
2575
2576         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2577                 BT_ERR("%s: rampatch file version did not match with firmware",
2578                        hdev->name);
2579                 err = -EINVAL;
2580                 goto done;
2581         }
2582
2583         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2584
2585 done:
2586         release_firmware(fw);
2587
2588         return err;
2589 }
2590
2591 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2592                                     struct qca_version *ver,
2593                                     const struct qca_device_info *info)
2594 {
2595         const struct firmware *fw;
2596         char fwname[64];
2597         int err;
2598
2599         snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/",
2600                  le32_to_cpu(ver->rom_version));
2601
2602         err = reject_firmware(&fw, fwname, &hdev->dev);
2603         if (err) {
2604                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2605                        hdev->name, fwname, err);
2606                 return err;
2607         }
2608
2609         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2610
2611         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2612
2613         release_firmware(fw);
2614
2615         return err;
2616 }
2617
2618 /* identify the ROM version and check whether patches are needed */
2619 static bool btusb_qca_need_patch(struct usb_device *udev)
2620 {
2621         struct qca_version ver;
2622
2623         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2624                                       sizeof(ver)) < 0)
2625                 return false;
2626         /* only low ROM versions need patches */
2627         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
2628 }
2629
2630 static int btusb_setup_qca(struct hci_dev *hdev)
2631 {
2632         struct btusb_data *btdata = hci_get_drvdata(hdev);
2633         struct usb_device *udev = btdata->udev;
2634         const struct qca_device_info *info = NULL;
2635         struct qca_version ver;
2636         u32 ver_rom;
2637         u8 status;
2638         int i, err;
2639
2640         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2641                                         sizeof(ver));
2642         if (err < 0)
2643                 return err;
2644
2645         ver_rom = le32_to_cpu(ver.rom_version);
2646         /* Don't care about high ROM versions */
2647         if (ver_rom & ~0xffffU)
2648                 return 0;
2649
2650         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2651                 if (ver_rom == qca_devices_table[i].rom_version)
2652                         info = &qca_devices_table[i];
2653         }
2654         if (!info) {
2655                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2656                        ver_rom);
2657                 return -ENODEV;
2658         }
2659
2660         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
2661                                         sizeof(status));
2662         if (err < 0)
2663                 return err;
2664
2665         if (!(status & QCA_PATCH_UPDATED)) {
2666                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2667                 if (err < 0)
2668                         return err;
2669         }
2670
2671         if (!(status & QCA_SYSCFG_UPDATED)) {
2672                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2673                 if (err < 0)
2674                         return err;
2675         }
2676
2677         return 0;
2678 }
2679
2680 #ifdef CONFIG_BT_HCIBTUSB_BCM
2681 static inline int __set_diag_interface(struct hci_dev *hdev)
2682 {
2683         struct btusb_data *data = hci_get_drvdata(hdev);
2684         struct usb_interface *intf = data->diag;
2685         int i;
2686
2687         if (!data->diag)
2688                 return -ENODEV;
2689
2690         data->diag_tx_ep = NULL;
2691         data->diag_rx_ep = NULL;
2692
2693         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2694                 struct usb_endpoint_descriptor *ep_desc;
2695
2696                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2697
2698                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2699                         data->diag_tx_ep = ep_desc;
2700                         continue;
2701                 }
2702
2703                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2704                         data->diag_rx_ep = ep_desc;
2705                         continue;
2706                 }
2707         }
2708
2709         if (!data->diag_tx_ep || !data->diag_rx_ep) {
2710                 BT_ERR("%s invalid diagnostic descriptors", hdev->name);
2711                 return -ENODEV;
2712         }
2713
2714         return 0;
2715 }
2716
2717 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2718 {
2719         struct btusb_data *data = hci_get_drvdata(hdev);
2720         struct sk_buff *skb;
2721         struct urb *urb;
2722         unsigned int pipe;
2723
2724         if (!data->diag_tx_ep)
2725                 return ERR_PTR(-ENODEV);
2726
2727         urb = usb_alloc_urb(0, GFP_KERNEL);
2728         if (!urb)
2729                 return ERR_PTR(-ENOMEM);
2730
2731         skb = bt_skb_alloc(2, GFP_KERNEL);
2732         if (!skb) {
2733                 usb_free_urb(urb);
2734                 return ERR_PTR(-ENOMEM);
2735         }
2736
2737         *skb_put(skb, 1) = 0xf0;
2738         *skb_put(skb, 1) = enable;
2739
2740         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2741
2742         usb_fill_bulk_urb(urb, data->udev, pipe,
2743                           skb->data, skb->len, btusb_tx_complete, skb);
2744
2745         skb->dev = (void *)hdev;
2746
2747         return urb;
2748 }
2749
2750 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2751 {
2752         struct btusb_data *data = hci_get_drvdata(hdev);
2753         struct urb *urb;
2754
2755         if (!data->diag)
2756                 return -ENODEV;
2757
2758         if (!test_bit(HCI_RUNNING, &hdev->flags))
2759                 return -ENETDOWN;
2760
2761         urb = alloc_diag_urb(hdev, enable);
2762         if (IS_ERR(urb))
2763                 return PTR_ERR(urb);
2764
2765         return submit_or_queue_tx_urb(hdev, urb);
2766 }
2767 #endif
2768
2769 static int btusb_probe(struct usb_interface *intf,
2770                        const struct usb_device_id *id)
2771 {
2772         struct usb_endpoint_descriptor *ep_desc;
2773         struct btusb_data *data;
2774         struct hci_dev *hdev;
2775         unsigned ifnum_base;
2776         int i, err;
2777
2778         BT_DBG("intf %p id %p", intf, id);
2779
2780         /* interface numbers are hardcoded in the spec */
2781         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2782                 if (!(id->driver_info & BTUSB_IFNUM_2))
2783                         return -ENODEV;
2784                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2785                         return -ENODEV;
2786         }
2787
2788         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2789
2790         if (!id->driver_info) {
2791                 const struct usb_device_id *match;
2792
2793                 match = usb_match_id(intf, blacklist_table);
2794                 if (match)
2795                         id = match;
2796         }
2797
2798         if (id->driver_info == BTUSB_IGNORE)
2799                 return -ENODEV;
2800
2801         if (id->driver_info & BTUSB_ATH3012) {
2802                 struct usb_device *udev = interface_to_usbdev(intf);
2803
2804                 /* Old firmware would otherwise let ath3k driver load
2805                  * patch and sysconfig files */
2806                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
2807                     !btusb_qca_need_patch(udev))
2808                         return -ENODEV;
2809         }
2810
2811         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2812         if (!data)
2813                 return -ENOMEM;
2814
2815         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2816                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2817
2818                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2819                         data->intr_ep = ep_desc;
2820                         continue;
2821                 }
2822
2823                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2824                         data->bulk_tx_ep = ep_desc;
2825                         continue;
2826                 }
2827
2828                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2829                         data->bulk_rx_ep = ep_desc;
2830                         continue;
2831                 }
2832         }
2833
2834         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2835                 return -ENODEV;
2836
2837         if (id->driver_info & BTUSB_AMP) {
2838                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2839                 data->cmdreq = 0x2b;
2840         } else {
2841                 data->cmdreq_type = USB_TYPE_CLASS;
2842                 data->cmdreq = 0x00;
2843         }
2844
2845         data->udev = interface_to_usbdev(intf);
2846         data->intf = intf;
2847
2848         INIT_WORK(&data->work, btusb_work);
2849         INIT_WORK(&data->waker, btusb_waker);
2850         init_usb_anchor(&data->deferred);
2851         init_usb_anchor(&data->tx_anchor);
2852         spin_lock_init(&data->txlock);
2853
2854         init_usb_anchor(&data->intr_anchor);
2855         init_usb_anchor(&data->bulk_anchor);
2856         init_usb_anchor(&data->isoc_anchor);
2857         init_usb_anchor(&data->diag_anchor);
2858         spin_lock_init(&data->rxlock);
2859
2860         if (id->driver_info & BTUSB_INTEL_NEW) {
2861                 data->recv_event = btusb_recv_event_intel;
2862                 data->recv_bulk = btusb_recv_bulk_intel;
2863                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2864         } else {
2865                 data->recv_event = hci_recv_frame;
2866                 data->recv_bulk = btusb_recv_bulk;
2867         }
2868
2869         hdev = hci_alloc_dev();
2870         if (!hdev)
2871                 return -ENOMEM;
2872
2873         hdev->bus = HCI_USB;
2874         hci_set_drvdata(hdev, data);
2875
2876         if (id->driver_info & BTUSB_AMP)
2877                 hdev->dev_type = HCI_AMP;
2878         else
2879                 hdev->dev_type = HCI_PRIMARY;
2880
2881         data->hdev = hdev;
2882
2883         SET_HCIDEV_DEV(hdev, &intf->dev);
2884
2885         hdev->open   = btusb_open;
2886         hdev->close  = btusb_close;
2887         hdev->flush  = btusb_flush;
2888         hdev->send   = btusb_send_frame;
2889         hdev->notify = btusb_notify;
2890
2891         if (id->driver_info & BTUSB_CW6622)
2892                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2893
2894         if (id->driver_info & BTUSB_BCM2045)
2895                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2896
2897         if (id->driver_info & BTUSB_BCM92035)
2898                 hdev->setup = btusb_setup_bcm92035;
2899
2900 #ifdef CONFIG_BT_HCIBTUSB_BCM
2901         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2902                 hdev->manufacturer = 15;
2903                 hdev->setup = btbcm_setup_patchram;
2904                 hdev->set_diag = btusb_bcm_set_diag;
2905                 hdev->set_bdaddr = btbcm_set_bdaddr;
2906
2907                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2908                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2909         }
2910
2911         if (id->driver_info & BTUSB_BCM_APPLE) {
2912                 hdev->manufacturer = 15;
2913                 hdev->setup = btbcm_setup_apple;
2914                 hdev->set_diag = btusb_bcm_set_diag;
2915
2916                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2917                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2918         }
2919 #endif
2920
2921         if (id->driver_info & BTUSB_INTEL) {
2922                 hdev->manufacturer = 2;
2923                 hdev->setup = btusb_setup_intel;
2924                 hdev->shutdown = btusb_shutdown_intel;
2925                 hdev->set_diag = btintel_set_diag_mfg;
2926                 hdev->set_bdaddr = btintel_set_bdaddr;
2927                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2928                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2929                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2930         }
2931
2932         if (id->driver_info & BTUSB_INTEL_NEW) {
2933                 hdev->manufacturer = 2;
2934                 hdev->send = btusb_send_frame_intel;
2935                 hdev->setup = btusb_setup_intel_new;
2936                 hdev->hw_error = btintel_hw_error;
2937                 hdev->set_diag = btintel_set_diag;
2938                 hdev->set_bdaddr = btintel_set_bdaddr;
2939                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2940                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2941         }
2942
2943         if (id->driver_info & BTUSB_MARVELL)
2944                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2945
2946         if (id->driver_info & BTUSB_SWAVE) {
2947                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2948                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2949         }
2950
2951         if (id->driver_info & BTUSB_INTEL_BOOT) {
2952                 hdev->manufacturer = 2;
2953                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2954         }
2955
2956         if (id->driver_info & BTUSB_ATH3012) {
2957                 data->setup_on_usb = btusb_setup_qca;
2958                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2959                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2960                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2961         }
2962
2963         if (id->driver_info & BTUSB_QCA_ROME) {
2964                 data->setup_on_usb = btusb_setup_qca;
2965                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2966
2967                 /* QCA Rome devices lose their updated firmware over suspend,
2968                  * but the USB hub doesn't notice any status change.
2969                  * explicitly request a device reset on resume.
2970                  */
2971                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
2972         }
2973
2974 #ifdef CONFIG_BT_HCIBTUSB_RTL
2975         if (id->driver_info & BTUSB_REALTEK) {
2976                 hdev->setup = btrtl_setup_realtek;
2977
2978                 /* Realtek devices lose their updated firmware over suspend,
2979                  * but the USB hub doesn't notice any status change.
2980                  * Explicitly request a device reset on resume.
2981                  */
2982                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
2983         }
2984 #endif
2985
2986         if (id->driver_info & BTUSB_AMP) {
2987                 /* AMP controllers do not support SCO packets */
2988                 data->isoc = NULL;
2989         } else {
2990                 /* Interface orders are hardcoded in the specification */
2991                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
2992         }
2993
2994         if (!reset)
2995                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2996
2997         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2998                 if (!disable_scofix)
2999                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3000         }
3001
3002         if (id->driver_info & BTUSB_BROKEN_ISOC)
3003                 data->isoc = NULL;
3004
3005         if (id->driver_info & BTUSB_DIGIANSWER) {
3006                 data->cmdreq_type = USB_TYPE_VENDOR;
3007                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3008         }
3009
3010         if (id->driver_info & BTUSB_CSR) {
3011                 struct usb_device *udev = data->udev;
3012                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3013
3014                 /* Old firmware would otherwise execute USB reset */
3015                 if (bcdDevice < 0x117)
3016                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3017
3018                 /* Fake CSR devices with broken commands */
3019                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3020                         hdev->setup = btusb_setup_csr;
3021
3022                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3023         }
3024
3025         if (id->driver_info & BTUSB_SNIFFER) {
3026                 struct usb_device *udev = data->udev;
3027
3028                 /* New sniffer firmware has crippled HCI interface */
3029                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3030                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3031         }
3032
3033         if (id->driver_info & BTUSB_INTEL_BOOT) {
3034                 /* A bug in the bootloader causes that interrupt interface is
3035                  * only enabled after receiving SetInterface(0, AltSetting=0).
3036                  */
3037                 err = usb_set_interface(data->udev, 0, 0);
3038                 if (err < 0) {
3039                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3040                         hci_free_dev(hdev);
3041                         return err;
3042                 }
3043         }
3044
3045         if (data->isoc) {
3046                 err = usb_driver_claim_interface(&btusb_driver,
3047                                                  data->isoc, data);
3048                 if (err < 0) {
3049                         hci_free_dev(hdev);
3050                         return err;
3051                 }
3052         }
3053
3054 #ifdef CONFIG_BT_HCIBTUSB_BCM
3055         if (data->diag) {
3056                 if (!usb_driver_claim_interface(&btusb_driver,
3057                                                 data->diag, data))
3058                         __set_diag_interface(hdev);
3059                 else
3060                         data->diag = NULL;
3061         }
3062 #endif
3063
3064         err = hci_register_dev(hdev);
3065         if (err < 0) {
3066                 hci_free_dev(hdev);
3067                 return err;
3068         }
3069
3070         usb_set_intfdata(intf, data);
3071
3072         return 0;
3073 }
3074
3075 static void btusb_disconnect(struct usb_interface *intf)
3076 {
3077         struct btusb_data *data = usb_get_intfdata(intf);
3078         struct hci_dev *hdev;
3079
3080         BT_DBG("intf %p", intf);
3081
3082         if (!data)
3083                 return;
3084
3085         hdev = data->hdev;
3086         usb_set_intfdata(data->intf, NULL);
3087
3088         if (data->isoc)
3089                 usb_set_intfdata(data->isoc, NULL);
3090
3091         if (data->diag)
3092                 usb_set_intfdata(data->diag, NULL);
3093
3094         hci_unregister_dev(hdev);
3095
3096         if (intf == data->intf) {
3097                 if (data->isoc)
3098                         usb_driver_release_interface(&btusb_driver, data->isoc);
3099                 if (data->diag)
3100                         usb_driver_release_interface(&btusb_driver, data->diag);
3101         } else if (intf == data->isoc) {
3102                 if (data->diag)
3103                         usb_driver_release_interface(&btusb_driver, data->diag);
3104                 usb_driver_release_interface(&btusb_driver, data->intf);
3105         } else if (intf == data->diag) {
3106                 usb_driver_release_interface(&btusb_driver, data->intf);
3107                 if (data->isoc)
3108                         usb_driver_release_interface(&btusb_driver, data->isoc);
3109         }
3110
3111         hci_free_dev(hdev);
3112 }
3113
3114 #ifdef CONFIG_PM
3115 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3116 {
3117         struct btusb_data *data = usb_get_intfdata(intf);
3118
3119         BT_DBG("intf %p", intf);
3120
3121         if (data->suspend_count++)
3122                 return 0;
3123
3124         spin_lock_irq(&data->txlock);
3125         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3126                 set_bit(BTUSB_SUSPENDING, &data->flags);
3127                 spin_unlock_irq(&data->txlock);
3128         } else {
3129                 spin_unlock_irq(&data->txlock);
3130                 data->suspend_count--;
3131                 return -EBUSY;
3132         }
3133
3134         cancel_work_sync(&data->work);
3135
3136         btusb_stop_traffic(data);
3137         usb_kill_anchored_urbs(&data->tx_anchor);
3138
3139         return 0;
3140 }
3141
3142 static void play_deferred(struct btusb_data *data)
3143 {
3144         struct urb *urb;
3145         int err;
3146
3147         while ((urb = usb_get_from_anchor(&data->deferred))) {
3148                 err = usb_submit_urb(urb, GFP_ATOMIC);
3149                 if (err < 0)
3150                         break;
3151
3152                 data->tx_in_flight++;
3153         }
3154         usb_scuttle_anchored_urbs(&data->deferred);
3155 }
3156
3157 static int btusb_resume(struct usb_interface *intf)
3158 {
3159         struct btusb_data *data = usb_get_intfdata(intf);
3160         struct hci_dev *hdev = data->hdev;
3161         int err = 0;
3162
3163         BT_DBG("intf %p", intf);
3164
3165         if (--data->suspend_count)
3166                 return 0;
3167
3168         if (!test_bit(HCI_RUNNING, &hdev->flags))
3169                 goto done;
3170
3171         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3172                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3173                 if (err < 0) {
3174                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3175                         goto failed;
3176                 }
3177         }
3178
3179         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3180                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3181                 if (err < 0) {
3182                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3183                         goto failed;
3184                 }
3185
3186                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3187         }
3188
3189         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3190                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3191                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3192                 else
3193                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3194         }
3195
3196         spin_lock_irq(&data->txlock);
3197         play_deferred(data);
3198         clear_bit(BTUSB_SUSPENDING, &data->flags);
3199         spin_unlock_irq(&data->txlock);
3200         schedule_work(&data->work);
3201
3202         return 0;
3203
3204 failed:
3205         usb_scuttle_anchored_urbs(&data->deferred);
3206 done:
3207         spin_lock_irq(&data->txlock);
3208         clear_bit(BTUSB_SUSPENDING, &data->flags);
3209         spin_unlock_irq(&data->txlock);
3210
3211         return err;
3212 }
3213 #endif
3214
3215 static struct usb_driver btusb_driver = {
3216         .name           = "btusb",
3217         .probe          = btusb_probe,
3218         .disconnect     = btusb_disconnect,
3219 #ifdef CONFIG_PM
3220         .suspend        = btusb_suspend,
3221         .resume         = btusb_resume,
3222 #endif
3223         .id_table       = btusb_table,
3224         .supports_autosuspend = 1,
3225         .disable_hub_initiated_lpm = 1,
3226 };
3227
3228 module_usb_driver(btusb_driver);
3229
3230 module_param(disable_scofix, bool, 0644);
3231 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3232
3233 module_param(force_scofix, bool, 0644);
3234 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3235
3236 module_param(reset, bool, 0644);
3237 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3238
3239 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3240 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3241 MODULE_VERSION(VERSION);
3242 MODULE_LICENSE("GPL");