linux/drivers/bluetooth/btusb.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *
   4 *  Generic Bluetooth USB driver
   5 *
   6 *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   7 */
   8
   9#include <linux/dmi.h>
  10#include <linux/module.h>
  11#include <linux/usb.h>
  12#include <linux/usb/quirks.h>
  13#include <linux/firmware.h>
  14#include <linux/iopoll.h>
  15#include <linux/of_device.h>
  16#include <linux/of_irq.h>
  17#include <linux/suspend.h>
  18#include <linux/gpio/consumer.h>
  19#include <asm/unaligned.h>
  20
  21#include <net/bluetooth/bluetooth.h>
  22#include <net/bluetooth/hci_core.h>
  23
  24#include "btintel.h"
  25#include "btbcm.h"
  26#include "btrtl.h"
  27
  28#define VERSION "0.8"
  29
  30static bool disable_scofix;
  31static bool force_scofix;
  32static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
  33
  34static bool reset = true;
  35
  36static struct usb_driver btusb_driver;
  37
  38#define BTUSB_IGNORE            0x01
  39#define BTUSB_DIGIANSWER        0x02
  40#define BTUSB_CSR               0x04
  41#define BTUSB_SNIFFER           0x08
  42#define BTUSB_BCM92035          0x10
  43#define BTUSB_BROKEN_ISOC       0x20
  44#define BTUSB_WRONG_SCO_MTU     0x40
  45#define BTUSB_ATH3012           0x80
  46#define BTUSB_INTEL             0x100
  47#define BTUSB_INTEL_BOOT        0x200
  48#define BTUSB_BCM_PATCHRAM      0x400
  49#define BTUSB_MARVELL           0x800
  50#define BTUSB_SWAVE             0x1000
  51#define BTUSB_INTEL_NEW         0x2000
  52#define BTUSB_AMP               0x4000
  53#define BTUSB_QCA_ROME          0x8000
  54#define BTUSB_BCM_APPLE         0x10000
  55#define BTUSB_REALTEK           0x20000
  56#define BTUSB_BCM2045           0x40000
  57#define BTUSB_IFNUM_2           0x80000
  58#define BTUSB_CW6622            0x100000
  59#define BTUSB_MEDIATEK          0x200000
  60
  61static const struct usb_device_id btusb_table[] = {
  62        /* Generic Bluetooth USB device */
  63        { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  64
  65        /* Generic Bluetooth AMP device */
  66        { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  67
  68        /* Generic Bluetooth USB interface */
  69        { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  70
  71        /* Apple-specific (Broadcom) devices */
  72        { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  73          .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  74
  75        /* MediaTek MT76x0E */
  76        { USB_DEVICE(0x0e8d, 0x763f) },
  77
  78        /* Broadcom SoftSailing reporting vendor specific */
  79        { USB_DEVICE(0x0a5c, 0x21e1) },
  80
  81        /* Apple MacBookPro 7,1 */
  82        { USB_DEVICE(0x05ac, 0x8213) },
  83
  84        /* Apple iMac11,1 */
  85        { USB_DEVICE(0x05ac, 0x8215) },
  86
  87        /* Apple MacBookPro6,2 */
  88        { USB_DEVICE(0x05ac, 0x8218) },
  89
  90        /* Apple MacBookAir3,1, MacBookAir3,2 */
  91        { USB_DEVICE(0x05ac, 0x821b) },
  92
  93        /* Apple MacBookAir4,1 */
  94        { USB_DEVICE(0x05ac, 0x821f) },
  95
  96        /* Apple MacBookPro8,2 */
  97        { USB_DEVICE(0x05ac, 0x821a) },
  98
  99        /* Apple MacMini5,1 */
 100        { USB_DEVICE(0x05ac, 0x8281) },
 101
 102        /* AVM BlueFRITZ! USB v2.0 */
 103        { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 104
 105        /* Bluetooth Ultraport Module from IBM */
 106        { USB_DEVICE(0x04bf, 0x030a) },
 107
 108        /* ALPS Modules with non-standard id */
 109        { USB_DEVICE(0x044e, 0x3001) },
 110        { USB_DEVICE(0x044e, 0x3002) },
 111
 112        /* Ericsson with non-standard id */
 113        { USB_DEVICE(0x0bdb, 0x1002) },
 114
 115        /* Canyon CN-BTU1 with HID interfaces */
 116        { USB_DEVICE(0x0c10, 0x0000) },
 117
 118        /* Broadcom BCM20702A0 */
 119        { USB_DEVICE(0x413c, 0x8197) },
 120
 121        /* Broadcom BCM20702B0 (Dynex/Insignia) */
 122        { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 123
 124        /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 125        { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 126          .driver_info = BTUSB_BCM_PATCHRAM },
 127
 128        /* Broadcom BCM920703 (HTC Vive) */
 129        { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 130          .driver_info = BTUSB_BCM_PATCHRAM },
 131
 132        /* Foxconn - Hon Hai */
 133        { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 134          .driver_info = BTUSB_BCM_PATCHRAM },
 135
 136        /* Lite-On Technology - Broadcom based */
 137        { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 138          .driver_info = BTUSB_BCM_PATCHRAM },
 139
 140        /* Broadcom devices with vendor specific id */
 141        { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 142          .driver_info = BTUSB_BCM_PATCHRAM },
 143
 144        /* ASUSTek Computer - Broadcom based */
 145        { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 146          .driver_info = BTUSB_BCM_PATCHRAM },
 147
 148        /* Belkin F8065bf - Broadcom based */
 149        { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 150          .driver_info = BTUSB_BCM_PATCHRAM },
 151
 152        /* IMC Networks - Broadcom based */
 153        { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 154          .driver_info = BTUSB_BCM_PATCHRAM },
 155
 156        /* Dell Computer - Broadcom based  */
 157        { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 158          .driver_info = BTUSB_BCM_PATCHRAM },
 159
 160        /* Toshiba Corp - Broadcom based */
 161        { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 162          .driver_info = BTUSB_BCM_PATCHRAM },
 163
 164        /* Intel Bluetooth USB Bootloader (RAM module) */
 165        { USB_DEVICE(0x8087, 0x0a5a),
 166          .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 167
 168        { }     /* Terminating entry */
 169};
 170
 171MODULE_DEVICE_TABLE(usb, btusb_table);
 172
 173static const struct usb_device_id blacklist_table[] = {
 174        /* CSR BlueCore devices */
 175        { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 176
 177        /* Broadcom BCM2033 without firmware */
 178        { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 179
 180        /* Broadcom BCM2045 devices */
 181        { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 182
 183        /* Atheros 3011 with sflash firmware */
 184        { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 185        { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 186        { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 187        { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 188        { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 189        { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 190        { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 191
 192        /* Atheros AR9285 Malbec with sflash firmware */
 193        { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 194
 195        /* Atheros 3012 with sflash firmware */
 196        { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 197        { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 198        { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 199        { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 200        { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 201        { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 202        { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 203        { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 204        { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 205        { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 206        { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 207        { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 208        { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 209        { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 210        { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 211        { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 212        { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 213        { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 214        { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 215        { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 216        { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 217        { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 218        { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 219        { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 220        { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 221        { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 222        { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 223        { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 224        { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 225        { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 226        { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 227        { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 228        { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 229        { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 230        { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 231        { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 232        { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 233        { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 234        { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 235        { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 236        { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 237        { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 238        { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 239        { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 240        { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 241        { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 242        { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 243        { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 244        { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 245        { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 246
 247        /* Atheros AR5BBU12 with sflash firmware */
 248        { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 249
 250        /* Atheros AR5BBU12 with sflash firmware */
 251        { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 252        { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 253
 254        /* QCA ROME chipset */
 255        { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME },
 256        { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 257        { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 258        { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
 259        { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 260        { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
 261        { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 262        { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 263        { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
 264        { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
 265        { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 266        { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
 267        { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
 268        { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
 269        { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME },
 270        { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
 271        { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME },
 272
 273        /* Broadcom BCM2035 */
 274        { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 275        { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 276        { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 277
 278        /* Broadcom BCM2045 */
 279        { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 280        { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 281
 282        /* IBM/Lenovo ThinkPad with Broadcom chip */
 283        { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 284        { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 285
 286        /* HP laptop with Broadcom chip */
 287        { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 288
 289        /* Dell laptop with Broadcom chip */
 290        { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 291
 292        /* Dell Wireless 370 and 410 devices */
 293        { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 294        { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 295
 296        /* Belkin F8T012 and F8T013 devices */
 297        { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 298        { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 299
 300        /* Asus WL-BTD202 device */
 301        { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 302
 303        /* Kensington Bluetooth USB adapter */
 304        { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 305
 306        /* RTX Telecom based adapters with buggy SCO support */
 307        { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 308        { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 309
 310        /* CONWISE Technology based adapters with buggy SCO support */
 311        { USB_DEVICE(0x0e5e, 0x6622),
 312          .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 313
 314        /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 315        { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 316
 317        /* Digianswer devices */
 318        { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 319        { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 320
 321        /* CSR BlueCore Bluetooth Sniffer */
 322        { USB_DEVICE(0x0a12, 0x0002),
 323          .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 324
 325        /* Frontline ComProbe Bluetooth Sniffer */
 326        { USB_DEVICE(0x16d3, 0x0002),
 327          .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 328
 329        /* Marvell Bluetooth devices */
 330        { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 331        { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 332        { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 333
 334        /* Intel Bluetooth devices */
 335        { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
 336        { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW },
 337        { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW },
 338        { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 339        { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 340        { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 341        { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 342        { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
 343        { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW },
 344
 345        /* Other Intel Bluetooth devices */
 346        { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 347          .driver_info = BTUSB_IGNORE },
 348
 349        /* Realtek Bluetooth devices */
 350        { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 351          .driver_info = BTUSB_REALTEK },
 352
 353        /* MediaTek Bluetooth devices */
 354        { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 355          .driver_info = BTUSB_MEDIATEK },
 356
 357        /* Additional Realtek 8723AE Bluetooth devices */
 358        { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 359        { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 360
 361        /* Additional Realtek 8723BE Bluetooth devices */
 362        { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 363        { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 364        { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 365        { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 366        { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 367        { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 368
 369        /* Additional Realtek 8723BU Bluetooth devices */
 370        { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 371
 372        /* Additional Realtek 8723DE Bluetooth devices */
 373        { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 374        { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 375
 376        /* Additional Realtek 8821AE Bluetooth devices */
 377        { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 378        { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 379        { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 380        { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 381        { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 382
 383        /* Additional Realtek 8822BE Bluetooth devices */
 384        { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 385        { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 386
 387        /* Additional Realtek 8822CE Bluetooth devices */
 388        { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK },
 389
 390        /* Silicon Wave based devices */
 391        { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 392
 393        { }     /* Terminating entry */
 394};
 395
 396/* The Bluetooth USB module build into some devices needs to be reset on resume,
 397 * this is a problem with the platform (likely shutting off all power) not with
 398 * the module itself. So we use a DMI list to match known broken platforms.
 399 */
 400static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 401        {
 402                /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 403                .matches = {
 404                        DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 405                        DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 406                },
 407        },
 408        {
 409                /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 410                .matches = {
 411                        DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 412                        DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 413                },
 414        },
 415        {
 416                /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 417                .matches = {
 418                        DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 419                        DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 420                },
 421        },
 422        {}
 423};
 424
 425#define BTUSB_MAX_ISOC_FRAMES   10
 426
 427#define BTUSB_INTR_RUNNING      0
 428#define BTUSB_BULK_RUNNING      1
 429#define BTUSB_ISOC_RUNNING      2
 430#define BTUSB_SUSPENDING        3
 431#define BTUSB_DID_ISO_RESUME    4
 432#define BTUSB_BOOTLOADER        5
 433#define BTUSB_DOWNLOADING       6
 434#define BTUSB_FIRMWARE_LOADED   7
 435#define BTUSB_FIRMWARE_FAILED   8
 436#define BTUSB_BOOTING           9
 437#define BTUSB_DIAG_RUNNING      10
 438#define BTUSB_OOB_WAKE_ENABLED  11
 439#define BTUSB_HW_RESET_ACTIVE   12
 440#define BTUSB_TX_WAIT_VND_EVT   13
 441#define BTUSB_WAKEUP_DISABLE    14
 442
 443struct btusb_data {
 444        struct hci_dev       *hdev;
 445        struct usb_device    *udev;
 446        struct usb_interface *intf;
 447        struct usb_interface *isoc;
 448        struct usb_interface *diag;
 449        unsigned isoc_ifnum;
 450
 451        unsigned long flags;
 452
 453        struct work_struct work;
 454        struct work_struct waker;
 455
 456        struct usb_anchor deferred;
 457        struct usb_anchor tx_anchor;
 458        int tx_in_flight;
 459        spinlock_t txlock;
 460
 461        struct usb_anchor intr_anchor;
 462        struct usb_anchor bulk_anchor;
 463        struct usb_anchor isoc_anchor;
 464        struct usb_anchor diag_anchor;
 465        struct usb_anchor ctrl_anchor;
 466        spinlock_t rxlock;
 467
 468        struct sk_buff *evt_skb;
 469        struct sk_buff *acl_skb;
 470        struct sk_buff *sco_skb;
 471
 472        struct usb_endpoint_descriptor *intr_ep;
 473        struct usb_endpoint_descriptor *bulk_tx_ep;
 474        struct usb_endpoint_descriptor *bulk_rx_ep;
 475        struct usb_endpoint_descriptor *isoc_tx_ep;
 476        struct usb_endpoint_descriptor *isoc_rx_ep;
 477        struct usb_endpoint_descriptor *diag_tx_ep;
 478        struct usb_endpoint_descriptor *diag_rx_ep;
 479
 480        struct gpio_desc *reset_gpio;
 481
 482        __u8 cmdreq_type;
 483        __u8 cmdreq;
 484
 485        unsigned int sco_num;
 486        int isoc_altsetting;
 487        int suspend_count;
 488
 489        int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 490        int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 491
 492        int (*setup_on_usb)(struct hci_dev *hdev);
 493
 494        int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 495        unsigned cmd_timeout_cnt;
 496};
 497
 498
 499static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 500{
 501        struct btusb_data *data = hci_get_drvdata(hdev);
 502        struct gpio_desc *reset_gpio = data->reset_gpio;
 503
 504        if (++data->cmd_timeout_cnt < 5)
 505                return;
 506
 507        if (!reset_gpio) {
 508                bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
 509                return;
 510        }
 511
 512        /*
 513         * Toggle the hard reset line if the platform provides one. The reset
 514         * is going to yank the device off the USB and then replug. So doing
 515         * once is enough. The cleanup is handled correctly on the way out
 516         * (standard USB disconnect), and the new device is detected cleanly
 517         * and bound to the driver again like it should be.
 518         */
 519        if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 520                bt_dev_err(hdev, "last reset failed? Not resetting again");
 521                return;
 522        }
 523
 524        bt_dev_err(hdev, "Initiating HW reset via gpio");
 525        gpiod_set_value_cansleep(reset_gpio, 1);
 526        msleep(100);
 527        gpiod_set_value_cansleep(reset_gpio, 0);
 528}
 529
 530static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 531{
 532        struct btusb_data *data = hci_get_drvdata(hdev);
 533        struct gpio_desc *reset_gpio = data->reset_gpio;
 534
 535        if (++data->cmd_timeout_cnt < 5)
 536                return;
 537
 538        if (!reset_gpio) {
 539                bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
 540                return;
 541        }
 542
 543        /* Toggle the hard reset line. The Realtek device is going to
 544         * yank itself off the USB and then replug. The cleanup is handled
 545         * correctly on the way out (standard USB disconnect), and the new
 546         * device is detected cleanly and bound to the driver again like
 547         * it should be.
 548         */
 549        if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 550                bt_dev_err(hdev, "last reset failed? Not resetting again");
 551                return;
 552        }
 553
 554        bt_dev_err(hdev, "Reset Realtek device via gpio");
 555        gpiod_set_value_cansleep(reset_gpio, 0);
 556        msleep(200);
 557        gpiod_set_value_cansleep(reset_gpio, 1);
 558}
 559
 560static inline void btusb_free_frags(struct btusb_data *data)
 561{
 562        unsigned long flags;
 563
 564        spin_lock_irqsave(&data->rxlock, flags);
 565
 566        kfree_skb(data->evt_skb);
 567        data->evt_skb = NULL;
 568
 569        kfree_skb(data->acl_skb);
 570        data->acl_skb = NULL;
 571
 572        kfree_skb(data->sco_skb);
 573        data->sco_skb = NULL;
 574
 575        spin_unlock_irqrestore(&data->rxlock, flags);
 576}
 577
 578static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 579{
 580        struct sk_buff *skb;
 581        unsigned long flags;
 582        int err = 0;
 583
 584        spin_lock_irqsave(&data->rxlock, flags);
 585        skb = data->evt_skb;
 586
 587        while (count) {
 588                int len;
 589
 590                if (!skb) {
 591                        skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 592                        if (!skb) {
 593                                err = -ENOMEM;
 594                                break;
 595                        }
 596
 597                        hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 598                        hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 599                }
 600
 601                len = min_t(uint, hci_skb_expect(skb), count);
 602                skb_put_data(skb, buffer, len);
 603
 604                count -= len;
 605                buffer += len;
 606                hci_skb_expect(skb) -= len;
 607
 608                if (skb->len == HCI_EVENT_HDR_SIZE) {
 609                        /* Complete event header */
 610                        hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 611
 612                        if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 613                                kfree_skb(skb);
 614                                skb = NULL;
 615
 616                                err = -EILSEQ;
 617                                break;
 618                        }
 619                }
 620
 621                if (!hci_skb_expect(skb)) {
 622                        /* Complete frame */
 623                        data->recv_event(data->hdev, skb);
 624                        skb = NULL;
 625                }
 626        }
 627
 628        data->evt_skb = skb;
 629        spin_unlock_irqrestore(&data->rxlock, flags);
 630
 631        return err;
 632}
 633
 634static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 635{
 636        struct sk_buff *skb;
 637        unsigned long flags;
 638        int err = 0;
 639
 640        spin_lock_irqsave(&data->rxlock, flags);
 641        skb = data->acl_skb;
 642
 643        while (count) {
 644                int len;
 645
 646                if (!skb) {
 647                        skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 648                        if (!skb) {
 649                                err = -ENOMEM;
 650                                break;
 651                        }
 652
 653                        hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 654                        hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 655                }
 656
 657                len = min_t(uint, hci_skb_expect(skb), count);
 658                skb_put_data(skb, buffer, len);
 659
 660                count -= len;
 661                buffer += len;
 662                hci_skb_expect(skb) -= len;
 663
 664                if (skb->len == HCI_ACL_HDR_SIZE) {
 665                        __le16 dlen = hci_acl_hdr(skb)->dlen;
 666
 667                        /* Complete ACL header */
 668                        hci_skb_expect(skb) = __le16_to_cpu(dlen);
 669
 670                        if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 671                                kfree_skb(skb);
 672                                skb = NULL;
 673
 674                                err = -EILSEQ;
 675                                break;
 676                        }
 677                }
 678
 679                if (!hci_skb_expect(skb)) {
 680                        /* Complete frame */
 681                        hci_recv_frame(data->hdev, skb);
 682                        skb = NULL;
 683                }
 684        }
 685
 686        data->acl_skb = skb;
 687        spin_unlock_irqrestore(&data->rxlock, flags);
 688
 689        return err;
 690}
 691
 692static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 693{
 694        struct sk_buff *skb;
 695        unsigned long flags;
 696        int err = 0;
 697
 698        spin_lock_irqsave(&data->rxlock, flags);
 699        skb = data->sco_skb;
 700
 701        while (count) {
 702                int len;
 703
 704                if (!skb) {
 705                        skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 706                        if (!skb) {
 707                                err = -ENOMEM;
 708                                break;
 709                        }
 710
 711                        hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 712                        hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 713                }
 714
 715                len = min_t(uint, hci_skb_expect(skb), count);
 716                skb_put_data(skb, buffer, len);
 717
 718                count -= len;
 719                buffer += len;
 720                hci_skb_expect(skb) -= len;
 721
 722                if (skb->len == HCI_SCO_HDR_SIZE) {
 723                        /* Complete SCO header */
 724                        hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 725
 726                        if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 727                                kfree_skb(skb);
 728                                skb = NULL;
 729
 730                                err = -EILSEQ;
 731                                break;
 732                        }
 733                }
 734
 735                if (!hci_skb_expect(skb)) {
 736                        /* Complete frame */
 737                        hci_recv_frame(data->hdev, skb);
 738                        skb = NULL;
 739                }
 740        }
 741
 742        data->sco_skb = skb;
 743        spin_unlock_irqrestore(&data->rxlock, flags);
 744
 745        return err;
 746}
 747
 748static void btusb_intr_complete(struct urb *urb)
 749{
 750        struct hci_dev *hdev = urb->context;
 751        struct btusb_data *data = hci_get_drvdata(hdev);
 752        int err;
 753
 754        BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 755               urb->actual_length);
 756
 757        if (!test_bit(HCI_RUNNING, &hdev->flags))
 758                return;
 759
 760        if (urb->status == 0) {
 761                hdev->stat.byte_rx += urb->actual_length;
 762
 763                if (btusb_recv_intr(data, urb->transfer_buffer,
 764                                    urb->actual_length) < 0) {
 765                        bt_dev_err(hdev, "corrupted event packet");
 766                        hdev->stat.err_rx++;
 767                }
 768        } else if (urb->status == -ENOENT) {
 769                /* Avoid suspend failed when usb_kill_urb */
 770                return;
 771        }
 772
 773        if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 774                return;
 775
 776        usb_mark_last_busy(data->udev);
 777        usb_anchor_urb(urb, &data->intr_anchor);
 778
 779        err = usb_submit_urb(urb, GFP_ATOMIC);
 780        if (err < 0) {
 781                /* -EPERM: urb is being killed;
 782                 * -ENODEV: device got disconnected
 783                 */
 784                if (err != -EPERM && err != -ENODEV)
 785                        bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 786                                   urb, -err);
 787                usb_unanchor_urb(urb);
 788        }
 789}
 790
 791static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 792{
 793        struct btusb_data *data = hci_get_drvdata(hdev);
 794        struct urb *urb;
 795        unsigned char *buf;
 796        unsigned int pipe;
 797        int err, size;
 798
 799        BT_DBG("%s", hdev->name);
 800
 801        if (!data->intr_ep)
 802                return -ENODEV;
 803
 804        urb = usb_alloc_urb(0, mem_flags);
 805        if (!urb)
 806                return -ENOMEM;
 807
 808        size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 809
 810        buf = kmalloc(size, mem_flags);
 811        if (!buf) {
 812                usb_free_urb(urb);
 813                return -ENOMEM;
 814        }
 815
 816        pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 817
 818        usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 819                         btusb_intr_complete, hdev, data->intr_ep->bInterval);
 820
 821        urb->transfer_flags |= URB_FREE_BUFFER;
 822
 823        usb_anchor_urb(urb, &data->intr_anchor);
 824
 825        err = usb_submit_urb(urb, mem_flags);
 826        if (err < 0) {
 827                if (err != -EPERM && err != -ENODEV)
 828                        bt_dev_err(hdev, "urb %p submission failed (%d)",
 829                                   urb, -err);
 830                usb_unanchor_urb(urb);
 831        }
 832
 833        usb_free_urb(urb);
 834
 835        return err;
 836}
 837
 838static void btusb_bulk_complete(struct urb *urb)
 839{
 840        struct hci_dev *hdev = urb->context;
 841        struct btusb_data *data = hci_get_drvdata(hdev);
 842        int err;
 843
 844        BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 845               urb->actual_length);
 846
 847        if (!test_bit(HCI_RUNNING, &hdev->flags))
 848                return;
 849
 850        if (urb->status == 0) {
 851                hdev->stat.byte_rx += urb->actual_length;
 852
 853                if (data->recv_bulk(data, urb->transfer_buffer,
 854                                    urb->actual_length) < 0) {
 855                        bt_dev_err(hdev, "corrupted ACL packet");
 856                        hdev->stat.err_rx++;
 857                }
 858        } else if (urb->status == -ENOENT) {
 859                /* Avoid suspend failed when usb_kill_urb */
 860                return;
 861        }
 862
 863        if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 864                return;
 865
 866        usb_anchor_urb(urb, &data->bulk_anchor);
 867        usb_mark_last_busy(data->udev);
 868
 869        err = usb_submit_urb(urb, GFP_ATOMIC);
 870        if (err < 0) {
 871                /* -EPERM: urb is being killed;
 872                 * -ENODEV: device got disconnected
 873                 */
 874                if (err != -EPERM && err != -ENODEV)
 875                        bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 876                                   urb, -err);
 877                usb_unanchor_urb(urb);
 878        }
 879}
 880
 881static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 882{
 883        struct btusb_data *data = hci_get_drvdata(hdev);
 884        struct urb *urb;
 885        unsigned char *buf;
 886        unsigned int pipe;
 887        int err, size = HCI_MAX_FRAME_SIZE;
 888
 889        BT_DBG("%s", hdev->name);
 890
 891        if (!data->bulk_rx_ep)
 892                return -ENODEV;
 893
 894        urb = usb_alloc_urb(0, mem_flags);
 895        if (!urb)
 896                return -ENOMEM;
 897
 898        buf = kmalloc(size, mem_flags);
 899        if (!buf) {
 900                usb_free_urb(urb);
 901                return -ENOMEM;
 902        }
 903
 904        pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 905
 906        usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 907                          btusb_bulk_complete, hdev);
 908
 909        urb->transfer_flags |= URB_FREE_BUFFER;
 910
 911        usb_mark_last_busy(data->udev);
 912        usb_anchor_urb(urb, &data->bulk_anchor);
 913
 914        err = usb_submit_urb(urb, mem_flags);
 915        if (err < 0) {
 916                if (err != -EPERM && err != -ENODEV)
 917                        bt_dev_err(hdev, "urb %p submission failed (%d)",
 918                                   urb, -err);
 919                usb_unanchor_urb(urb);
 920        }
 921
 922        usb_free_urb(urb);
 923
 924        return err;
 925}
 926
 927static void btusb_isoc_complete(struct urb *urb)
 928{
 929        struct hci_dev *hdev = urb->context;
 930        struct btusb_data *data = hci_get_drvdata(hdev);
 931        int i, err;
 932
 933        BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 934               urb->actual_length);
 935
 936        if (!test_bit(HCI_RUNNING, &hdev->flags))
 937                return;
 938
 939        if (urb->status == 0) {
 940                for (i = 0; i < urb->number_of_packets; i++) {
 941                        unsigned int offset = urb->iso_frame_desc[i].offset;
 942                        unsigned int length = urb->iso_frame_desc[i].actual_length;
 943
 944                        if (urb->iso_frame_desc[i].status)
 945                                continue;
 946
 947                        hdev->stat.byte_rx += length;
 948
 949                        if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 950                                            length) < 0) {
 951                                bt_dev_err(hdev, "corrupted SCO packet");
 952                                hdev->stat.err_rx++;
 953                        }
 954                }
 955        } else if (urb->status == -ENOENT) {
 956                /* Avoid suspend failed when usb_kill_urb */
 957                return;
 958        }
 959
 960        if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 961                return;
 962
 963        usb_anchor_urb(urb, &data->isoc_anchor);
 964
 965        err = usb_submit_urb(urb, GFP_ATOMIC);
 966        if (err < 0) {
 967                /* -EPERM: urb is being killed;
 968                 * -ENODEV: device got disconnected
 969                 */
 970                if (err != -EPERM && err != -ENODEV)
 971                        bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 972                                   urb, -err);
 973                usb_unanchor_urb(urb);
 974        }
 975}
 976
 977static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 978{
 979        int i, offset = 0;
 980
 981        BT_DBG("len %d mtu %d", len, mtu);
 982
 983        for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 984                                        i++, offset += mtu, len -= mtu) {
 985                urb->iso_frame_desc[i].offset = offset;
 986                urb->iso_frame_desc[i].length = mtu;
 987        }
 988
 989        if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 990                urb->iso_frame_desc[i].offset = offset;
 991                urb->iso_frame_desc[i].length = len;
 992                i++;
 993        }
 994
 995        urb->number_of_packets = i;
 996}
 997
 998static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 999{
1000        struct btusb_data *data = hci_get_drvdata(hdev);
1001        struct urb *urb;
1002        unsigned char *buf;
1003        unsigned int pipe;
1004        int err, size;
1005
1006        BT_DBG("%s", hdev->name);
1007
1008        if (!data->isoc_rx_ep)
1009                return -ENODEV;
1010
1011        urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1012        if (!urb)
1013                return -ENOMEM;
1014
1015        size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1016                                                BTUSB_MAX_ISOC_FRAMES;
1017
1018        buf = kmalloc(size, mem_flags);
1019        if (!buf) {
1020                usb_free_urb(urb);
1021                return -ENOMEM;
1022        }
1023
1024        pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1025
1026        usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1027                         hdev, data->isoc_rx_ep->bInterval);
1028
1029        urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1030
1031        __fill_isoc_descriptor(urb, size,
1032                               le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1033
1034        usb_anchor_urb(urb, &data->isoc_anchor);
1035
1036        err = usb_submit_urb(urb, mem_flags);
1037        if (err < 0) {
1038                if (err != -EPERM && err != -ENODEV)
1039                        bt_dev_err(hdev, "urb %p submission failed (%d)",
1040                                   urb, -err);
1041                usb_unanchor_urb(urb);
1042        }
1043
1044        usb_free_urb(urb);
1045
1046        return err;
1047}
1048
1049static void btusb_diag_complete(struct urb *urb)
1050{
1051        struct hci_dev *hdev = urb->context;
1052        struct btusb_data *data = hci_get_drvdata(hdev);
1053        int err;
1054
1055        BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1056               urb->actual_length);
1057
1058        if (urb->status == 0) {
1059                struct sk_buff *skb;
1060
1061                skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1062                if (skb) {
1063                        skb_put_data(skb, urb->transfer_buffer,
1064                                     urb->actual_length);
1065                        hci_recv_diag(hdev, skb);
1066                }
1067        } else if (urb->status == -ENOENT) {
1068                /* Avoid suspend failed when usb_kill_urb */
1069                return;
1070        }
1071
1072        if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1073                return;
1074
1075        usb_anchor_urb(urb, &data->diag_anchor);
1076        usb_mark_last_busy(data->udev);
1077
1078        err = usb_submit_urb(urb, GFP_ATOMIC);
1079        if (err < 0) {
1080                /* -EPERM: urb is being killed;
1081                 * -ENODEV: device got disconnected
1082                 */
1083                if (err != -EPERM && err != -ENODEV)
1084                        bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1085                                   urb, -err);
1086                usb_unanchor_urb(urb);
1087        }
1088}
1089
1090static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1091{
1092        struct btusb_data *data = hci_get_drvdata(hdev);
1093        struct urb *urb;
1094        unsigned char *buf;
1095        unsigned int pipe;
1096        int err, size = HCI_MAX_FRAME_SIZE;
1097
1098        BT_DBG("%s", hdev->name);
1099
1100        if (!data->diag_rx_ep)
1101                return -ENODEV;
1102
1103        urb = usb_alloc_urb(0, mem_flags);
1104        if (!urb)
1105                return -ENOMEM;
1106
1107        buf = kmalloc(size, mem_flags);
1108        if (!buf) {
1109                usb_free_urb(urb);
1110                return -ENOMEM;
1111        }
1112
1113        pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1114
1115        usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1116                          btusb_diag_complete, hdev);
1117
1118        urb->transfer_flags |= URB_FREE_BUFFER;
1119
1120        usb_mark_last_busy(data->udev);
1121        usb_anchor_urb(urb, &data->diag_anchor);
1122
1123        err = usb_submit_urb(urb, mem_flags);
1124        if (err < 0) {
1125                if (err != -EPERM && err != -ENODEV)
1126                        bt_dev_err(hdev, "urb %p submission failed (%d)",
1127                                   urb, -err);
1128                usb_unanchor_urb(urb);
1129        }
1130
1131        usb_free_urb(urb);
1132
1133        return err;
1134}
1135
1136static void btusb_tx_complete(struct urb *urb)
1137{
1138        struct sk_buff *skb = urb->context;
1139        struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1140        struct btusb_data *data = hci_get_drvdata(hdev);
1141        unsigned long flags;
1142
1143        BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1144               urb->actual_length);
1145
1146        if (!test_bit(HCI_RUNNING, &hdev->flags))
1147                goto done;
1148
1149        if (!urb->status)
1150                hdev->stat.byte_tx += urb->transfer_buffer_length;
1151        else
1152                hdev->stat.err_tx++;
1153
1154done:
1155        spin_lock_irqsave(&data->txlock, flags);
1156        data->tx_in_flight--;
1157        spin_unlock_irqrestore(&data->txlock, flags);
1158
1159        kfree(urb->setup_packet);
1160
1161        kfree_skb(skb);
1162}
1163
1164static void btusb_isoc_tx_complete(struct urb *urb)
1165{
1166        struct sk_buff *skb = urb->context;
1167        struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1168
1169        BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1170               urb->actual_length);
1171
1172        if (!test_bit(HCI_RUNNING, &hdev->flags))
1173                goto done;
1174
1175        if (!urb->status)
1176                hdev->stat.byte_tx += urb->transfer_buffer_length;
1177        else
1178                hdev->stat.err_tx++;
1179
1180done:
1181        kfree(urb->setup_packet);
1182
1183        kfree_skb(skb);
1184}
1185
1186static int btusb_open(struct hci_dev *hdev)
1187{
1188        struct btusb_data *data = hci_get_drvdata(hdev);
1189        int err;
1190
1191        BT_DBG("%s", hdev->name);
1192
1193        err = usb_autopm_get_interface(data->intf);
1194        if (err < 0)
1195                return err;
1196
1197        /* Patching USB firmware files prior to starting any URBs of HCI path
1198         * It is more safe to use USB bulk channel for downloading USB patch
1199         */
1200        if (data->setup_on_usb) {
1201                err = data->setup_on_usb(hdev);
1202                if (err < 0)
1203                        return err;
1204        }
1205
1206        data->intf->needs_remote_wakeup = 1;
1207
1208        /* Disable device remote wakeup when host is suspended
1209         * For Realtek chips, global suspend without
1210         * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device.
1211         */
1212        if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1213                device_wakeup_disable(&data->udev->dev);
1214
1215        if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1216                goto done;
1217
1218        err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1219        if (err < 0)
1220                goto failed;
1221
1222        err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1223        if (err < 0) {
1224                usb_kill_anchored_urbs(&data->intr_anchor);
1225                goto failed;
1226        }
1227
1228        set_bit(BTUSB_BULK_RUNNING, &data->flags);
1229        btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1230
1231        if (data->diag) {
1232                if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1233                        set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1234        }
1235
1236done:
1237        usb_autopm_put_interface(data->intf);
1238        return 0;
1239
1240failed:
1241        clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1242        usb_autopm_put_interface(data->intf);
1243        return err;
1244}
1245
1246static void btusb_stop_traffic(struct btusb_data *data)
1247{
1248        usb_kill_anchored_urbs(&data->intr_anchor);
1249        usb_kill_anchored_urbs(&data->bulk_anchor);
1250        usb_kill_anchored_urbs(&data->isoc_anchor);
1251        usb_kill_anchored_urbs(&data->diag_anchor);
1252        usb_kill_anchored_urbs(&data->ctrl_anchor);
1253}
1254
1255static int btusb_close(struct hci_dev *hdev)
1256{
1257        struct btusb_data *data = hci_get_drvdata(hdev);
1258        int err;
1259
1260        BT_DBG("%s", hdev->name);
1261
1262        cancel_work_sync(&data->work);
1263        cancel_work_sync(&data->waker);
1264
1265        clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1266        clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1267        clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1268        clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1269
1270        btusb_stop_traffic(data);
1271        btusb_free_frags(data);
1272
1273        err = usb_autopm_get_interface(data->intf);
1274        if (err < 0)
1275                goto failed;
1276
1277        data->intf->needs_remote_wakeup = 0;
1278
1279        /* Enable remote wake up for auto-suspend */
1280        if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1281                data->intf->needs_remote_wakeup = 1;
1282
1283        usb_autopm_put_interface(data->intf);
1284
1285failed:
1286        usb_scuttle_anchored_urbs(&data->deferred);
1287        return 0;
1288}
1289
1290static int btusb_flush(struct hci_dev *hdev)
1291{
1292        struct btusb_data *data = hci_get_drvdata(hdev);
1293
1294        BT_DBG("%s", hdev->name);
1295
1296        usb_kill_anchored_urbs(&data->tx_anchor);
1297        btusb_free_frags(data);
1298
1299        return 0;
1300}
1301
1302static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1303{
1304        struct btusb_data *data = hci_get_drvdata(hdev);
1305        struct usb_ctrlrequest *dr;
1306        struct urb *urb;
1307        unsigned int pipe;
1308
1309        urb = usb_alloc_urb(0, GFP_KERNEL);
1310        if (!urb)
1311                return ERR_PTR(-ENOMEM);
1312
1313        dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1314        if (!dr) {
1315                usb_free_urb(urb);
1316                return ERR_PTR(-ENOMEM);
1317        }
1318
1319        dr->bRequestType = data->cmdreq_type;
1320        dr->bRequest     = data->cmdreq;
1321        dr->wIndex       = 0;
1322        dr->wValue       = 0;
1323        dr->wLength      = __cpu_to_le16(skb->len);
1324
1325        pipe = usb_sndctrlpipe(data->udev, 0x00);
1326
1327        usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1328                             skb->data, skb->len, btusb_tx_complete, skb);
1329
1330        skb->dev = (void *)hdev;
1331
1332        return urb;
1333}
1334
1335static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1336{
1337        struct btusb_data *data = hci_get_drvdata(hdev);
1338        struct urb *urb;
1339        unsigned int pipe;
1340
1341        if (!data->bulk_tx_ep)
1342                return ERR_PTR(-ENODEV);
1343
1344        urb = usb_alloc_urb(0, GFP_KERNEL);
1345        if (!urb)
1346                return ERR_PTR(-ENOMEM);
1347
1348        pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1349
1350        usb_fill_bulk_urb(urb, data->udev, pipe,
1351                          skb->data, skb->len, btusb_tx_complete, skb);
1352
1353        skb->dev = (void *)hdev;
1354
1355        return urb;
1356}
1357
1358static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1359{
1360        struct btusb_data *data = hci_get_drvdata(hdev);
1361        struct urb *urb;
1362        unsigned int pipe;
1363
1364        if (!data->isoc_tx_ep)
1365                return ERR_PTR(-ENODEV);
1366
1367        urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1368        if (!urb)
1369                return ERR_PTR(-ENOMEM);
1370
1371        pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1372
1373        usb_fill_int_urb(urb, data->udev, pipe,
1374                         skb->data, skb->len, btusb_isoc_tx_complete,
1375                         skb, data->isoc_tx_ep->bInterval);
1376
1377        urb->transfer_flags  = URB_ISO_ASAP;
1378
1379        __fill_isoc_descriptor(urb, skb->len,
1380                               le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1381
1382        skb->dev = (void *)hdev;
1383
1384        return urb;
1385}
1386
1387static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1388{
1389        struct btusb_data *data = hci_get_drvdata(hdev);
1390        int err;
1391
1392        usb_anchor_urb(urb, &data->tx_anchor);
1393
1394        err = usb_submit_urb(urb, GFP_KERNEL);
1395        if (err < 0) {
1396                if (err != -EPERM && err != -ENODEV)
1397                        bt_dev_err(hdev, "urb %p submission failed (%d)",
1398                                   urb, -err);
1399                kfree(urb->setup_packet);
1400                usb_unanchor_urb(urb);
1401        } else {
1402                usb_mark_last_busy(data->udev);
1403        }
1404
1405        usb_free_urb(urb);
1406        return err;
1407}
1408
1409static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1410{
1411        struct btusb_data *data = hci_get_drvdata(hdev);
1412        unsigned long flags;
1413        bool suspending;
1414
1415        spin_lock_irqsave(&data->txlock, flags);
1416        suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1417        if (!suspending)
1418                data->tx_in_flight++;
1419        spin_unlock_irqrestore(&data->txlock, flags);
1420
1421        if (!suspending)
1422                return submit_tx_urb(hdev, urb);
1423
1424        usb_anchor_urb(urb, &data->deferred);
1425        schedule_work(&data->waker);
1426
1427        usb_free_urb(urb);
1428        return 0;
1429}
1430
1431static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1432{
1433        struct urb *urb;
1434
1435        BT_DBG("%s", hdev->name);
1436
1437        switch (hci_skb_pkt_type(skb)) {
1438        case HCI_COMMAND_PKT:
1439                urb = alloc_ctrl_urb(hdev, skb);
1440                if (IS_ERR(urb))
1441                        return PTR_ERR(urb);
1442
1443                hdev->stat.cmd_tx++;
1444                return submit_or_queue_tx_urb(hdev, urb);
1445
1446        case HCI_ACLDATA_PKT:
1447                urb = alloc_bulk_urb(hdev, skb);
1448                if (IS_ERR(urb))
1449                        return PTR_ERR(urb);
1450
1451                hdev->stat.acl_tx++;
1452                return submit_or_queue_tx_urb(hdev, urb);
1453
1454        case HCI_SCODATA_PKT:
1455                if (hci_conn_num(hdev, SCO_LINK) < 1)
1456                        return -ENODEV;
1457
1458                urb = alloc_isoc_urb(hdev, skb);
1459                if (IS_ERR(urb))
1460                        return PTR_ERR(urb);
1461
1462                hdev->stat.sco_tx++;
1463                return submit_tx_urb(hdev, urb);
1464        }
1465
1466        return -EILSEQ;
1467}
1468
1469static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1470{
1471        struct btusb_data *data = hci_get_drvdata(hdev);
1472
1473        BT_DBG("%s evt %d", hdev->name, evt);
1474
1475        if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1476                data->sco_num = hci_conn_num(hdev, SCO_LINK);
1477                schedule_work(&data->work);
1478        }
1479}
1480
1481static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1482{
1483        struct btusb_data *data = hci_get_drvdata(hdev);
1484        struct usb_interface *intf = data->isoc;
1485        struct usb_endpoint_descriptor *ep_desc;
1486        int i, err;
1487
1488        if (!data->isoc)
1489                return -ENODEV;
1490
1491        err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1492        if (err < 0) {
1493                bt_dev_err(hdev, "setting interface failed (%d)", -err);
1494                return err;
1495        }
1496
1497        data->isoc_altsetting = altsetting;
1498
1499        data->isoc_tx_ep = NULL;
1500        data->isoc_rx_ep = NULL;
1501
1502        for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1503                ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1504
1505                if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1506                        data->isoc_tx_ep = ep_desc;
1507                        continue;
1508                }
1509
1510                if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1511                        data->isoc_rx_ep = ep_desc;
1512                        continue;
1513                }
1514        }
1515
1516        if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1517                bt_dev_err(hdev, "invalid SCO descriptors");
1518                return -ENODEV;
1519        }
1520
1521        return 0;
1522}
1523
1524static void btusb_work(struct work_struct *work)
1525{
1526        struct btusb_data *data = container_of(work, struct btusb_data, work);
1527        struct hci_dev *hdev = data->hdev;
1528        int new_alts;
1529        int err;
1530
1531        if (data->sco_num > 0) {
1532                if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1533                        err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1534                        if (err < 0) {
1535                                clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1536                                usb_kill_anchored_urbs(&data->isoc_anchor);
1537                                return;
1538                        }
1539
1540                        set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1541                }
1542
1543                if (hdev->voice_setting & 0x0020) {
1544                        static const int alts[3] = { 2, 4, 5 };
1545
1546                        new_alts = alts[data->sco_num - 1];
1547                } else {
1548                        new_alts = data->sco_num;
1549                }
1550
1551                if (data->isoc_altsetting != new_alts) {
1552                        unsigned long flags;
1553
1554                        clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1555                        usb_kill_anchored_urbs(&data->isoc_anchor);
1556
1557                        /* When isochronous alternate setting needs to be
1558                         * changed, because SCO connection has been added
1559                         * or removed, a packet fragment may be left in the
1560                         * reassembling state. This could lead to wrongly
1561                         * assembled fragments.
1562                         *
1563                         * Clear outstanding fragment when selecting a new
1564                         * alternate setting.
1565                         */
1566                        spin_lock_irqsave(&data->rxlock, flags);
1567                        kfree_skb(data->sco_skb);
1568                        data->sco_skb = NULL;
1569                        spin_unlock_irqrestore(&data->rxlock, flags);
1570
1571                        if (__set_isoc_interface(hdev, new_alts) < 0)
1572                                return;
1573                }
1574
1575                if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1576                        if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1577                                clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1578                        else
1579                                btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1580                }
1581        } else {
1582                clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1583                usb_kill_anchored_urbs(&data->isoc_anchor);
1584
1585                __set_isoc_interface(hdev, 0);
1586                if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1587                        usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1588        }
1589}
1590
1591static void btusb_waker(struct work_struct *work)
1592{
1593        struct btusb_data *data = container_of(work, struct btusb_data, waker);
1594        int err;
1595
1596        err = usb_autopm_get_interface(data->intf);
1597        if (err < 0)
1598                return;
1599
1600        usb_autopm_put_interface(data->intf);
1601}
1602
1603static int btusb_setup_bcm92035(struct hci_dev *hdev)
1604{
1605        struct sk_buff *skb;
1606        u8 val = 0x00;
1607
1608        BT_DBG("%s", hdev->name);
1609
1610        skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1611        if (IS_ERR(skb))
1612                bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1613        else
1614                kfree_skb(skb);
1615
1616        return 0;
1617}
1618
1619static int btusb_setup_csr(struct hci_dev *hdev)
1620{
1621        struct hci_rp_read_local_version *rp;
1622        struct sk_buff *skb;
1623
1624        BT_DBG("%s", hdev->name);
1625
1626        skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1627                             HCI_INIT_TIMEOUT);
1628        if (IS_ERR(skb)) {
1629                int err = PTR_ERR(skb);
1630                bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1631                return err;
1632        }
1633
1634        if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1635                bt_dev_err(hdev, "CSR: Local version length mismatch");
1636                kfree_skb(skb);
1637                return -EIO;
1638        }
1639
1640        rp = (struct hci_rp_read_local_version *)skb->data;
1641
1642        /* Detect controllers which aren't real CSR ones. */
1643        if (le16_to_cpu(rp->manufacturer) != 10 ||
1644            le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1645                /* Clear the reset quirk since this is not an actual
1646                 * early Bluetooth 1.1 device from CSR.
1647                 */
1648                clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1649
1650                /* These fake CSR controllers have all a broken
1651                 * stored link key handling and so just disable it.
1652                 */
1653                set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1654        }
1655
1656        kfree_skb(skb);
1657
1658        return 0;
1659}
1660
1661static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1662                                                       struct intel_version *ver)
1663{
1664        const struct firmware *fw;
1665        char fwname[64];
1666        int ret;
1667
1668        snprintf(fwname, sizeof(fwname),
1669                 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1670                 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1671                 ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1672                 ver->fw_build_ww, ver->fw_build_yy);
1673
1674        ret = request_firmware(&fw, fwname, &hdev->dev);
1675        if (ret < 0) {
1676                if (ret == -EINVAL) {
1677                        bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1678                                   ret);
1679                        return NULL;
1680                }
1681
1682                bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1683                           fwname, ret);
1684
1685                /* If the correct firmware patch file is not found, use the
1686                 * default firmware patch file instead
1687                 */
1688                snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1689                         ver->hw_platform, ver->hw_variant);
1690                if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1691                        bt_dev_err(hdev, "failed to open default fw file: %s",
1692                                   fwname);
1693                        return NULL;
1694                }
1695        }
1696
1697        bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1698
1699        return fw;
1700}
1701
1702static int btusb_setup_intel_patching(struct hci_dev *hdev,
1703                                      const struct firmware *fw,
1704                                      const u8 **fw_ptr, int *disable_patch)
1705{
1706        struct sk_buff *skb;
1707        struct hci_command_hdr *cmd;
1708        const u8 *cmd_param;
1709        struct hci_event_hdr *evt = NULL;
1710        const u8 *evt_param = NULL;
1711        int remain = fw->size - (*fw_ptr - fw->data);
1712
1713        /* The first byte indicates the types of the patch command or event.
1714         * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1715         * in the current firmware buffer doesn't start with 0x01 or
1716         * the size of remain buffer is smaller than HCI command header,
1717         * the firmware file is corrupted and it should stop the patching
1718         * process.
1719         */
1720        if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1721                bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1722                return -EINVAL;
1723        }
1724        (*fw_ptr)++;
1725        remain--;
1726
1727        cmd = (struct hci_command_hdr *)(*fw_ptr);
1728        *fw_ptr += sizeof(*cmd);
1729        remain -= sizeof(*cmd);
1730
1731        /* Ensure that the remain firmware data is long enough than the length
1732         * of command parameter. If not, the firmware file is corrupted.
1733         */
1734        if (remain < cmd->plen) {
1735                bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1736                return -EFAULT;
1737        }
1738
1739        /* If there is a command that loads a patch in the firmware
1740         * file, then enable the patch upon success, otherwise just
1741         * disable the manufacturer mode, for example patch activation
1742         * is not required when the default firmware patch file is used
1743         * because there are no patch data to load.
1744         */
1745        if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1746                *disable_patch = 0;
1747
1748        cmd_param = *fw_ptr;
1749        *fw_ptr += cmd->plen;
1750        remain -= cmd->plen;
1751
1752        /* This reads the expected events when the above command is sent to the
1753         * device. Some vendor commands expects more than one events, for
1754         * example command status event followed by vendor specific event.
1755         * For this case, it only keeps the last expected event. so the command
1756         * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1757         * last expected event.
1758         */
1759        while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1760                (*fw_ptr)++;
1761                remain--;
1762
1763                evt = (struct hci_event_hdr *)(*fw_ptr);
1764                *fw_ptr += sizeof(*evt);
1765                remain -= sizeof(*evt);
1766
1767                if (remain < evt->plen) {
1768                        bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1769                        return -EFAULT;
1770                }
1771
1772                evt_param = *fw_ptr;
1773                *fw_ptr += evt->plen;
1774                remain -= evt->plen;
1775        }
1776
1777        /* Every HCI commands in the firmware file has its correspond event.
1778         * If event is not found or remain is smaller than zero, the firmware
1779         * file is corrupted.
1780         */
1781        if (!evt || !evt_param || remain < 0) {
1782                bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1783                return -EFAULT;
1784        }
1785
1786        skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1787                                cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1788        if (IS_ERR(skb)) {
1789                bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1790                           cmd->opcode, PTR_ERR(skb));
1791                return PTR_ERR(skb);
1792        }
1793
1794        /* It ensures that the returned event matches the event data read from
1795         * the firmware file. At fist, it checks the length and then
1796         * the contents of the event.
1797         */
1798        if (skb->len != evt->plen) {
1799                bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1800                           le16_to_cpu(cmd->opcode));
1801                kfree_skb(skb);
1802                return -EFAULT;
1803        }
1804
1805        if (memcmp(skb->data, evt_param, evt->plen)) {
1806                bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1807                           le16_to_cpu(cmd->opcode));
1808                kfree_skb(skb);
1809                return -EFAULT;
1810        }
1811        kfree_skb(skb);
1812
1813        return 0;
1814}
1815
1816static int btusb_setup_intel(struct hci_dev *hdev)
1817{
1818        struct sk_buff *skb;
1819        const struct firmware *fw;
1820        const u8 *fw_ptr;
1821        int disable_patch, err;
1822        struct intel_version ver;
1823
1824        BT_DBG("%s", hdev->name);
1825
1826        /* The controller has a bug with the first HCI command sent to it
1827         * returning number of completed commands as zero. This would stall the
1828         * command processing in the Bluetooth core.
1829         *
1830         * As a workaround, send HCI Reset command first which will reset the
1831         * number of completed commands and allow normal command processing
1832         * from now on.
1833         */
1834        skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1835        if (IS_ERR(skb)) {
1836                bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
1837                           PTR_ERR(skb));
1838                return PTR_ERR(skb);
1839        }
1840        kfree_skb(skb);
1841
1842        /* Read Intel specific controller version first to allow selection of
1843         * which firmware file to load.
1844         *
1845         * The returned information are hardware variant and revision plus
1846         * firmware variant, revision and build number.
1847         */
1848        err = btintel_read_version(hdev, &ver);
1849        if (err)
1850                return err;
1851
1852        bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1853                    ver.hw_platform, ver.hw_variant, ver.hw_revision,
1854                    ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1855                    ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1856
1857        /* fw_patch_num indicates the version of patch the device currently
1858         * have. If there is no patch data in the device, it is always 0x00.
1859         * So, if it is other than 0x00, no need to patch the device again.
1860         */
1861        if (ver.fw_patch_num) {
1862                bt_dev_info(hdev, "Intel device is already patched. "
1863                            "patch num: %02x", ver.fw_patch_num);
1864                goto complete;
1865        }
1866
1867        /* Opens the firmware patch file based on the firmware version read
1868         * from the controller. If it fails to open the matching firmware
1869         * patch file, it tries to open the default firmware patch file.
1870         * If no patch file is found, allow the device to operate without
1871         * a patch.
1872         */
1873        fw = btusb_setup_intel_get_fw(hdev, &ver);
1874        if (!fw)
1875                goto complete;
1876        fw_ptr = fw->data;
1877
1878        /* Enable the manufacturer mode of the controller.
1879         * Only while this mode is enabled, the driver can download the
1880         * firmware patch data and configuration parameters.
1881         */
1882        err = btintel_enter_mfg(hdev);
1883        if (err) {
1884                release_firmware(fw);
1885                return err;
1886        }
1887
1888        disable_patch = 1;
1889
1890        /* The firmware data file consists of list of Intel specific HCI
1891         * commands and its expected events. The first byte indicates the
1892         * type of the message, either HCI command or HCI event.
1893         *
1894         * It reads the command and its expected event from the firmware file,
1895         * and send to the controller. Once __hci_cmd_sync_ev() returns,
1896         * the returned event is compared with the event read from the firmware
1897         * file and it will continue until all the messages are downloaded to
1898         * the controller.
1899         *
1900         * Once the firmware patching is completed successfully,
1901         * the manufacturer mode is disabled with reset and activating the
1902         * downloaded patch.
1903         *
1904         * If the firmware patching fails, the manufacturer mode is
1905         * disabled with reset and deactivating the patch.
1906         *
1907         * If the default patch file is used, no reset is done when disabling
1908         * the manufacturer.
1909         */
1910        while (fw->size > fw_ptr - fw->data) {
1911                int ret;
1912
1913                ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1914                                                 &disable_patch);
1915                if (ret < 0)
1916                        goto exit_mfg_deactivate;
1917        }
1918
1919        release_firmware(fw);
1920
1921        if (disable_patch)
1922                goto exit_mfg_disable;
1923
1924        /* Patching completed successfully and disable the manufacturer mode
1925         * with reset and activate the downloaded firmware patches.
1926         */
1927        err = btintel_exit_mfg(hdev, true, true);
1928        if (err)
1929                return err;
1930
1931        bt_dev_info(hdev, "Intel firmware patch completed and activated");
1932
1933        goto complete;
1934
1935exit_mfg_disable:
1936        /* Disable the manufacturer mode without reset */
1937        err = btintel_exit_mfg(hdev, false, false);
1938        if (err)
1939                return err;
1940
1941        bt_dev_info(hdev, "Intel firmware patch completed");
1942
1943        goto complete;
1944
1945exit_mfg_deactivate:
1946        release_firmware(fw);
1947
1948        /* Patching failed. Disable the manufacturer mode with reset and
1949         * deactivate the downloaded firmware patches.
1950         */
1951        err = btintel_exit_mfg(hdev, true, false);
1952        if (err)
1953                return err;
1954
1955        bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1956
1957complete:
1958        /* Set the event mask for Intel specific vendor events. This enables
1959         * a few extra events that are useful during general operation.
1960         */
1961        btintel_set_event_mask_mfg(hdev, false);
1962
1963        btintel_check_bdaddr(hdev);
1964        return 0;
1965}
1966
1967static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1968{
1969        struct sk_buff *skb;
1970        struct hci_event_hdr *hdr;
1971        struct hci_ev_cmd_complete *evt;
1972
1973        skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
1974        if (!skb)
1975                return -ENOMEM;
1976
1977        hdr = skb_put(skb, sizeof(*hdr));
1978        hdr->evt = HCI_EV_CMD_COMPLETE;
1979        hdr->plen = sizeof(*evt) + 1;
1980
1981        evt = skb_put(skb, sizeof(*evt));
1982        evt->ncmd = 0x01;
1983        evt->opcode = cpu_to_le16(opcode);
1984
1985        skb_put_u8(skb, 0x00);
1986
1987        hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1988
1989        return hci_recv_frame(hdev, skb);
1990}
1991
1992static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1993                                 int count)
1994{
1995        /* When the device is in bootloader mode, then it can send
1996         * events via the bulk endpoint. These events are treated the
1997         * same way as the ones received from the interrupt endpoint.
1998         */
1999        if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2000                return btusb_recv_intr(data, buffer, count);
2001
2002        return btusb_recv_bulk(data, buffer, count);
2003}
2004
2005static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2006                               unsigned int len)
2007{
2008        const struct intel_bootup *evt = ptr;
2009
2010        if (len != sizeof(*evt))
2011                return;
2012
2013        if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2014                wake_up_bit(&data->flags, BTUSB_BOOTING);
2015}
2016
2017static void btusb_intel_secure_send_result(struct btusb_data *data,
2018                                           const void *ptr, unsigned int len)
2019{
2020        const struct intel_secure_send_result *evt = ptr;
2021
2022        if (len != sizeof(*evt))
2023                return;
2024
2025        if (evt->result)
2026                set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2027
2028        if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2029            test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2030                wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2031}
2032
2033static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2034{
2035        struct btusb_data *data = hci_get_drvdata(hdev);
2036
2037        if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2038                struct hci_event_hdr *hdr = (void *)skb->data;
2039
2040                if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2041                    hdr->plen > 0) {
2042                        const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2043                        unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2044
2045                        switch (skb->data[2]) {
2046                        case 0x02:
2047                                /* When switching to the operational firmware
2048                                 * the device sends a vendor specific event
2049                                 * indicating that the bootup completed.
2050                                 */
2051                                btusb_intel_bootup(data, ptr, len);
2052                                break;
2053                        case 0x06:
2054                                /* When the firmware loading completes the
2055                                 * device sends out a vendor specific event
2056                                 * indicating the result of the firmware
2057                                 * loading.
2058                                 */
2059                                btusb_intel_secure_send_result(data, ptr, len);
2060                                break;
2061                        }
2062                }
2063        }
2064
2065        return hci_recv_frame(hdev, skb);
2066}
2067
2068static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2069{
2070        struct btusb_data *data = hci_get_drvdata(hdev);
2071        struct urb *urb;
2072
2073        BT_DBG("%s", hdev->name);
2074
2075        switch (hci_skb_pkt_type(skb)) {
2076        case HCI_COMMAND_PKT:
2077                if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2078                        struct hci_command_hdr *cmd = (void *)skb->data;
2079                        __u16 opcode = le16_to_cpu(cmd->opcode);
2080
2081                        /* When in bootloader mode and the command 0xfc09
2082                         * is received, it needs to be send down the
2083                         * bulk endpoint. So allocate a bulk URB instead.
2084                         */
2085                        if (opcode == 0xfc09)
2086                                urb = alloc_bulk_urb(hdev, skb);
2087                        else
2088                                urb = alloc_ctrl_urb(hdev, skb);
2089
2090                        /* When the 0xfc01 command is issued to boot into
2091                         * the operational firmware, it will actually not
2092                         * send a command complete event. To keep the flow
2093                         * control working inject that event here.
2094                         */
2095                        if (opcode == 0xfc01)
2096                                inject_cmd_complete(hdev, opcode);
2097                } else {
2098                        urb = alloc_ctrl_urb(hdev, skb);
2099                }
2100                if (IS_ERR(urb))
2101                        return PTR_ERR(urb);
2102
2103                hdev->stat.cmd_tx++;
2104                return submit_or_queue_tx_urb(hdev, urb);
2105
2106        case HCI_ACLDATA_PKT:
2107                urb = alloc_bulk_urb(hdev, skb);
2108                if (IS_ERR(urb))
2109                        return PTR_ERR(urb);
2110
2111                hdev->stat.acl_tx++;
2112                return submit_or_queue_tx_urb(hdev, urb);
2113
2114        case HCI_SCODATA_PKT:
2115                if (hci_conn_num(hdev, SCO_LINK) < 1)
2116                        return -ENODEV;
2117
2118                urb = alloc_isoc_urb(hdev, skb);
2119                if (IS_ERR(urb))
2120                        return PTR_ERR(urb);
2121
2122                hdev->stat.sco_tx++;
2123                return submit_tx_urb(hdev, urb);
2124        }
2125
2126        return -EILSEQ;
2127}
2128
2129static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2130                                             struct intel_boot_params *params,
2131                                             char *fw_name, size_t len,
2132                                             const char *suffix)
2133{
2134        switch (ver->hw_variant) {
2135        case 0x0b:      /* SfP */
2136        case 0x0c:      /* WsP */
2137                snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2138                        le16_to_cpu(ver->hw_variant),
2139                        le16_to_cpu(params->dev_revid),
2140                        suffix);
2141                break;
2142        case 0x11:      /* JfP */
2143        case 0x12:      /* ThP */
2144        case 0x13:      /* HrP */
2145        case 0x14:      /* CcP */
2146                snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2147                        le16_to_cpu(ver->hw_variant),
2148                        le16_to_cpu(ver->hw_revision),
2149                        le16_to_cpu(ver->fw_revision),
2150                        suffix);
2151                break;
2152        default:
2153                return false;
2154        }
2155        return true;
2156}
2157
2158static int btusb_setup_intel_new(struct hci_dev *hdev)
2159{
2160        struct btusb_data *data = hci_get_drvdata(hdev);
2161        struct intel_version ver;
2162        struct intel_boot_params params;
2163        const struct firmware *fw;
2164        u32 boot_param;
2165        char fwname[64];
2166        ktime_t calltime, delta, rettime;
2167        unsigned long long duration;
2168        int err;
2169
2170        BT_DBG("%s", hdev->name);
2171
2172        /* Set the default boot parameter to 0x0 and it is updated to
2173         * SKU specific boot parameter after reading Intel_Write_Boot_Params
2174         * command while downloading the firmware.
2175         */
2176        boot_param = 0x00000000;
2177
2178        calltime = ktime_get();
2179
2180        /* Read the Intel version information to determine if the device
2181         * is in bootloader mode or if it already has operational firmware
2182         * loaded.
2183         */
2184        err = btintel_read_version(hdev, &ver);
2185        if (err)
2186                return err;
2187
2188        /* The hardware platform number has a fixed value of 0x37 and
2189         * for now only accept this single value.
2190         */
2191        if (ver.hw_platform != 0x37) {
2192                bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2193                           ver.hw_platform);
2194                return -EINVAL;
2195        }
2196
2197        /* Check for supported iBT hardware variants of this firmware
2198         * loading method.
2199         *
2200         * This check has been put in place to ensure correct forward
2201         * compatibility options when newer hardware variants come along.
2202         */
2203        switch (ver.hw_variant) {
2204        case 0x0b:      /* SfP */
2205        case 0x0c:      /* WsP */
2206        case 0x11:      /* JfP */
2207        case 0x12:      /* ThP */
2208        case 0x13:      /* HrP */
2209        case 0x14:      /* CcP */
2210                break;
2211        default:
2212                bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2213                           ver.hw_variant);
2214                return -EINVAL;
2215        }
2216
2217        btintel_version_info(hdev, &ver);
2218
2219        /* The firmware variant determines if the device is in bootloader
2220         * mode or is running operational firmware. The value 0x06 identifies
2221         * the bootloader and the value 0x23 identifies the operational
2222         * firmware.
2223         *
2224         * When the operational firmware is already present, then only
2225         * the check for valid Bluetooth device address is needed. This
2226         * determines if the device will be added as configured or
2227         * unconfigured controller.
2228         *
2229         * It is not possible to use the Secure Boot Parameters in this
2230         * case since that command is only available in bootloader mode.
2231         */
2232        if (ver.fw_variant == 0x23) {
2233                clear_bit(BTUSB_BOOTLOADER, &data->flags);
2234                btintel_check_bdaddr(hdev);
2235                return 0;
2236        }
2237
2238        /* If the device is not in bootloader mode, then the only possible
2239         * choice is to return an error and abort the device initialization.
2240         */
2241        if (ver.fw_variant != 0x06) {
2242                bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2243                           ver.fw_variant);
2244                return -ENODEV;
2245        }
2246
2247        /* Read the secure boot parameters to identify the operating
2248         * details of the bootloader.
2249         */
2250        err = btintel_read_boot_params(hdev, &params);
2251        if (err)
2252                return err;
2253
2254        /* It is required that every single firmware fragment is acknowledged
2255         * with a command complete event. If the boot parameters indicate
2256         * that this bootloader does not send them, then abort the setup.
2257         */
2258        if (params.limited_cce != 0x00) {
2259                bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2260                           params.limited_cce);
2261                return -EINVAL;
2262        }
2263
2264        /* If the OTP has no valid Bluetooth device address, then there will
2265         * also be no valid address for the operational firmware.
2266         */
2267        if (!bacmp(&params.otp_bdaddr, BDADDR_ANY)) {
2268                bt_dev_info(hdev, "No device address configured");
2269                set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2270        }
2271
2272        /* With this Intel bootloader only the hardware variant and device
2273         * revision information are used to select the right firmware for SfP
2274         * and WsP.
2275         *
2276         * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2277         *
2278         * Currently the supported hardware variants are:
2279         *   11 (0x0b) for iBT3.0 (LnP/SfP)
2280         *   12 (0x0c) for iBT3.5 (WsP)
2281         *
2282         * For ThP/JfP and for future SKU's, the FW name varies based on HW
2283         * variant, HW revision and FW revision, as these are dependent on CNVi
2284         * and RF Combination.
2285         *
2286         *   17 (0x11) for iBT3.5 (JfP)
2287         *   18 (0x12) for iBT3.5 (ThP)
2288         *
2289         * The firmware file name for these will be
2290         * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2291         *
2292         */
2293        err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2294                                                sizeof(fwname), "sfi");
2295        if (!err) {
2296                bt_dev_err(hdev, "Unsupported Intel firmware naming");
2297                return -EINVAL;
2298        }
2299
2300        err = request_firmware(&fw, fwname, &hdev->dev);
2301        if (err < 0) {
2302                bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2303                return err;
2304        }
2305
2306        bt_dev_info(hdev, "Found device firmware: %s", fwname);
2307
2308        /* Save the DDC file name for later use to apply once the firmware
2309         * downloading is done.
2310         */
2311        err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2312                                                sizeof(fwname), "ddc");
2313        if (!err) {
2314                bt_dev_err(hdev, "Unsupported Intel firmware naming");
2315                return -EINVAL;
2316        }
2317
2318        if (fw->size < 644) {
2319                bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2320                           fw->size);
2321                err = -EBADF;
2322                goto done;
2323        }
2324
2325        set_bit(BTUSB_DOWNLOADING, &data->flags);
2326
2327        /* Start firmware downloading and get boot parameter */
2328        err = btintel_download_firmware(hdev, fw, &boot_param);
2329        if (err < 0)
2330                goto done;
2331
2332        set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2333
2334        bt_dev_info(hdev, "Waiting for firmware download to complete");
2335
2336        /* Before switching the device into operational mode and with that
2337         * booting the loaded firmware, wait for the bootloader notification
2338         * that all fragments have been successfully received.
2339         *
2340         * When the event processing receives the notification, then the
2341         * BTUSB_DOWNLOADING flag will be cleared.
2342         *
2343         * The firmware loading should not take longer than 5 seconds
2344         * and thus just timeout if that happens and fail the setup
2345         * of this device.
2346         */
2347        err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2348                                  TASK_INTERRUPTIBLE,
2349                                  msecs_to_jiffies(5000));
2350        if (err == -EINTR) {
2351                bt_dev_err(hdev, "Firmware loading interrupted");
2352                goto done;
2353        }
2354
2355        if (err) {
2356                bt_dev_err(hdev, "Firmware loading timeout");
2357                err = -ETIMEDOUT;
2358                goto done;
2359        }
2360
2361        if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2362                bt_dev_err(hdev, "Firmware loading failed");
2363                err = -ENOEXEC;
2364                goto done;
2365        }
2366
2367        rettime = ktime_get();
2368        delta = ktime_sub(rettime, calltime);
2369        duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2370
2371        bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2372
2373done:
2374        release_firmware(fw);
2375
2376        if (err < 0)
2377                return err;
2378
2379        calltime = ktime_get();
2380
2381        set_bit(BTUSB_BOOTING, &data->flags);
2382
2383        err = btintel_send_intel_reset(hdev, boot_param);
2384        if (err)
2385                return err;
2386
2387        /* The bootloader will not indicate when the device is ready. This
2388         * is done by the operational firmware sending bootup notification.
2389         *
2390         * Booting into operational firmware should not take longer than
2391         * 1 second. However if that happens, then just fail the setup
2392         * since something went wrong.
2393         */
2394        bt_dev_info(hdev, "Waiting for device to boot");
2395
2396        err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2397                                  TASK_INTERRUPTIBLE,
2398                                  msecs_to_jiffies(1000));
2399
2400        if (err == -EINTR) {
2401                bt_dev_err(hdev, "Device boot interrupted");
2402                return -EINTR;
2403        }
2404
2405        if (err) {
2406                bt_dev_err(hdev, "Device boot timeout");
2407                return -ETIMEDOUT;
2408        }
2409
2410        rettime = ktime_get();
2411        delta = ktime_sub(rettime, calltime);
2412        duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2413
2414        bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2415
2416        clear_bit(BTUSB_BOOTLOADER, &data->flags);
2417
2418        /* Once the device is running in operational mode, it needs to apply
2419         * the device configuration (DDC) parameters.
2420         *
2421         * The device can work without DDC parameters, so even if it fails
2422         * to load the file, no need to fail the setup.
2423         */
2424        btintel_load_ddc_config(hdev, fwname);
2425
2426        /* Set the event mask for Intel specific vendor events. This enables
2427         * a few extra events that are useful during general operation. It
2428         * does not enable any debugging related events.
2429         *
2430         * The device will function correctly without these events enabled
2431         * and thus no need to fail the setup.
2432         */
2433        btintel_set_event_mask(hdev, false);
2434
2435        return 0;
2436}
2437
2438static int btusb_shutdown_intel(struct hci_dev *hdev)
2439{
2440        struct sk_buff *skb;
2441        long ret;
2442
2443        /* In the shutdown sequence where Bluetooth is turned off followed
2444         * by WiFi being turned off, turning WiFi back on causes issue with
2445         * the RF calibration.
2446         *
2447         * To ensure that any RF activity has been stopped, issue HCI Reset
2448         * command to clear all ongoing activity including advertising,
2449         * scanning etc.
2450         */
2451        skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2452        if (IS_ERR(skb)) {
2453                ret = PTR_ERR(skb);
2454                bt_dev_err(hdev, "HCI reset during shutdown failed");
2455                return ret;
2456        }
2457        kfree_skb(skb);
2458
2459        /* Some platforms have an issue with BT LED when the interface is
2460         * down or BT radio is turned off, which takes 5 seconds to BT LED
2461         * goes off. This command turns off the BT LED immediately.
2462         */
2463        skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2464        if (IS_ERR(skb)) {
2465                ret = PTR_ERR(skb);
2466                bt_dev_err(hdev, "turning off Intel device LED failed");
2467                return ret;
2468        }
2469        kfree_skb(skb);
2470
2471        return 0;
2472}
2473
2474static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2475{
2476        struct sk_buff *skb;
2477
2478        /* Send HCI Reset to the controller to stop any BT activity which
2479         * were triggered. This will help to save power and maintain the
2480         * sync b/w Host and controller
2481         */
2482        skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2483        if (IS_ERR(skb)) {
2484                bt_dev_err(hdev, "HCI reset during shutdown failed");
2485                return PTR_ERR(skb);
2486        }
2487        kfree_skb(skb);
2488
2489        return 0;
2490}
2491
2492#ifdef CONFIG_BT_HCIBTUSB_MTK
2493
2494#define FIRMWARE_MT7663         "mediatek/mt7663pr2h.bin"
2495#define FIRMWARE_MT7668         "mediatek/mt7668pr2h.bin"
2496
2497#define HCI_WMT_MAX_EVENT_SIZE          64
2498
2499enum {
2500        BTMTK_WMT_PATCH_DWNLD = 0x1,
2501        BTMTK_WMT_FUNC_CTRL = 0x6,
2502        BTMTK_WMT_RST = 0x7,
2503        BTMTK_WMT_SEMAPHORE = 0x17,
2504};
2505
2506enum {
2507        BTMTK_WMT_INVALID,
2508        BTMTK_WMT_PATCH_UNDONE,
2509        BTMTK_WMT_PATCH_DONE,
2510        BTMTK_WMT_ON_UNDONE,
2511        BTMTK_WMT_ON_DONE,
2512        BTMTK_WMT_ON_PROGRESS,
2513};
2514
2515struct btmtk_wmt_hdr {
2516        u8      dir;
2517        u8      op;
2518        __le16  dlen;
2519        u8      flag;
2520} __packed;
2521
2522struct btmtk_hci_wmt_cmd {
2523        struct btmtk_wmt_hdr hdr;
2524        u8 data[256];
2525} __packed;
2526
2527struct btmtk_hci_wmt_evt {
2528        struct hci_event_hdr hhdr;
2529        struct btmtk_wmt_hdr whdr;
2530} __packed;
2531
2532struct btmtk_hci_wmt_evt_funcc {
2533        struct btmtk_hci_wmt_evt hwhdr;
2534        __be16 status;
2535} __packed;
2536
2537struct btmtk_tci_sleep {
2538        u8 mode;
2539        __le16 duration;
2540        __le16 host_duration;
2541        u8 host_wakeup_pin;
2542        u8 time_compensation;
2543} __packed;
2544
2545struct btmtk_hci_wmt_params {
2546        u8 op;
2547        u8 flag;
2548        u16 dlen;
2549        const void *data;
2550        u32 *status;
2551};
2552
2553static void btusb_mtk_wmt_recv(struct urb *urb)
2554{
2555        struct hci_dev *hdev = urb->context;
2556        struct btusb_data *data = hci_get_drvdata(hdev);
2557        struct hci_event_hdr *hdr;
2558        struct sk_buff *skb;
2559        int err;
2560
2561        if (urb->status == 0 && urb->actual_length > 0) {
2562                hdev->stat.byte_rx += urb->actual_length;
2563
2564                /* WMT event shouldn't be fragmented and the size should be
2565                 * less than HCI_WMT_MAX_EVENT_SIZE.
2566                 */
2567                skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2568                if (!skb) {
2569                        hdev->stat.err_rx++;
2570                        goto err_out;
2571                }
2572
2573                hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2574                skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2575
2576                hdr = (void *)skb->data;
2577                /* Fix up the vendor event id with 0xff for vendor specific
2578                 * instead of 0xe4 so that event send via monitoring socket can
2579                 * be parsed properly.
2580                 */
2581                hdr->evt = 0xff;
2582
2583                /* When someone waits for the WMT event, the skb is being cloned
2584                 * and being processed the events from there then.
2585                 */
2586                if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2587                        data->evt_skb = skb_clone(skb, GFP_KERNEL);
2588                        if (!data->evt_skb)
2589                                goto err_out;
2590                }
2591
2592                err = hci_recv_frame(hdev, skb);
2593                if (err < 0)
2594                        goto err_free_skb;
2595
2596                if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2597                                       &data->flags)) {
2598                        /* Barrier to sync with other CPUs */
2599                        smp_mb__after_atomic();
2600                        wake_up_bit(&data->flags,
2601                                    BTUSB_TX_WAIT_VND_EVT);
2602                }
2603err_out:
2604                return;
2605err_free_skb:
2606                kfree_skb(data->evt_skb);
2607                data->evt_skb = NULL;
2608                return;
2609        } else if (urb->status == -ENOENT) {
2610                /* Avoid suspend failed when usb_kill_urb */
2611                return;
2612        }
2613
2614        usb_mark_last_busy(data->udev);
2615
2616        /* The URB complete handler is still called with urb->actual_length = 0
2617         * when the event is not available, so we should keep re-submitting
2618         * URB until WMT event returns, Also, It's necessary to wait some time
2619         * between the two consecutive control URBs to relax the target device
2620         * to generate the event. Otherwise, the WMT event cannot return from
2621         * the device successfully.
2622         */
2623        udelay(100);
2624
2625        usb_anchor_urb(urb, &data->ctrl_anchor);
2626        err = usb_submit_urb(urb, GFP_ATOMIC);
2627        if (err < 0) {
2628                /* -EPERM: urb is being killed;
2629                 * -ENODEV: device got disconnected
2630                 */
2631                if (err != -EPERM && err != -ENODEV)
2632                        bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2633                                   urb, -err);
2634                usb_unanchor_urb(urb);
2635        }
2636}
2637
2638static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2639{
2640        struct btusb_data *data = hci_get_drvdata(hdev);
2641        struct usb_ctrlrequest *dr;
2642        unsigned char *buf;
2643        int err, size = 64;
2644        unsigned int pipe;
2645        struct urb *urb;
2646
2647        urb = usb_alloc_urb(0, GFP_KERNEL);
2648        if (!urb)
2649                return -ENOMEM;
2650
2651        dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2652        if (!dr) {
2653                usb_free_urb(urb);
2654                return -ENOMEM;
2655        }
2656
2657        dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2658        dr->bRequest     = 1;
2659        dr->wIndex       = cpu_to_le16(0);
2660        dr->wValue       = cpu_to_le16(48);
2661        dr->wLength      = cpu_to_le16(size);
2662
2663        buf = kmalloc(size, GFP_KERNEL);
2664        if (!buf) {
2665                kfree(dr);
2666                return -ENOMEM;
2667        }
2668
2669        pipe = usb_rcvctrlpipe(data->udev, 0);
2670
2671        usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2672                             buf, size, btusb_mtk_wmt_recv, hdev);
2673
2674        urb->transfer_flags |= URB_FREE_BUFFER;
2675
2676        usb_anchor_urb(urb, &data->ctrl_anchor);
2677        err = usb_submit_urb(urb, GFP_KERNEL);
2678        if (err < 0) {
2679                if (err != -EPERM && err != -ENODEV)
2680                        bt_dev_err(hdev, "urb %p submission failed (%d)",
2681                                   urb, -err);
2682                usb_unanchor_urb(urb);
2683        }
2684
2685        usb_free_urb(urb);
2686
2687        return err;
2688}
2689
2690static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2691                                  struct btmtk_hci_wmt_params *wmt_params)
2692{
2693        struct btusb_data *data = hci_get_drvdata(hdev);
2694        struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2695        u32 hlen, status = BTMTK_WMT_INVALID;
2696        struct btmtk_hci_wmt_evt *wmt_evt;
2697        struct btmtk_hci_wmt_cmd wc;
2698        struct btmtk_wmt_hdr *hdr;
2699        int err;
2700
2701        /* Submit control IN URB on demand to process the WMT event */
2702        err = btusb_mtk_submit_wmt_recv_urb(hdev);
2703        if (err < 0)
2704                return err;
2705
2706        /* Send the WMT command and wait until the WMT event returns */
2707        hlen = sizeof(*hdr) + wmt_params->dlen;
2708        if (hlen > 255)
2709                return -EINVAL;
2710
2711        hdr = (struct btmtk_wmt_hdr *)&wc;
2712        hdr->dir = 1;
2713        hdr->op = wmt_params->op;
2714        hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2715        hdr->flag = wmt_params->flag;
2716        memcpy(wc.data, wmt_params->data, wmt_params->dlen);
2717
2718        set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2719
2720        err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc);
2721
2722        if (err < 0) {
2723                clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2724                return err;
2725        }
2726
2727        /* The vendor specific WMT commands are all answered by a vendor
2728         * specific event and will have the Command Status or Command
2729         * Complete as with usual HCI command flow control.
2730         *
2731         * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2732         * state to be cleared. The driver specific event receive routine
2733         * will clear that state and with that indicate completion of the
2734         * WMT command.
2735         */
2736        err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2737                                  TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2738        if (err == -EINTR) {
2739                bt_dev_err(hdev, "Execution of wmt command interrupted");
2740                clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2741                return err;
2742        }
2743
2744        if (err) {
2745                bt_dev_err(hdev, "Execution of wmt command timed out");
2746                clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2747                return -ETIMEDOUT;
2748        }
2749
2750        /* Parse and handle the return WMT event */
2751        wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2752        if (wmt_evt->whdr.op != hdr->op) {
2753                bt_dev_err(hdev, "Wrong op received %d expected %d",
2754                           wmt_evt->whdr.op, hdr->op);
2755                err = -EIO;
2756                goto err_free_skb;
2757        }
2758
2759        switch (wmt_evt->whdr.op) {
2760        case BTMTK_WMT_SEMAPHORE:
2761                if (wmt_evt->whdr.flag == 2)
2762                        status = BTMTK_WMT_PATCH_UNDONE;
2763                else
2764                        status = BTMTK_WMT_PATCH_DONE;
2765                break;
2766        case BTMTK_WMT_FUNC_CTRL:
2767                wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2768                if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2769                        status = BTMTK_WMT_ON_DONE;
2770                else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2771                        status = BTMTK_WMT_ON_PROGRESS;
2772                else
2773                        status = BTMTK_WMT_ON_UNDONE;
2774                break;
2775        }
2776
2777        if (wmt_params->status)
2778                *wmt_params->status = status;
2779
2780err_free_skb:
2781        kfree_skb(data->evt_skb);
2782        data->evt_skb = NULL;
2783
2784        return err;
2785}
2786
2787static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
2788{
2789        struct btmtk_hci_wmt_params wmt_params;
2790        const struct firmware *fw;
2791        const u8 *fw_ptr;
2792        size_t fw_size;
2793        int err, dlen;
2794        u8 flag;
2795
2796        err = request_firmware(&fw, fwname, &hdev->dev);
2797        if (err < 0) {
2798                bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
2799                return err;
2800        }
2801
2802        fw_ptr = fw->data;
2803        fw_size = fw->size;
2804
2805        /* The size of patch header is 30 bytes, should be skip */
2806        if (fw_size < 30) {
2807                err = -EINVAL;
2808                goto err_release_fw;
2809        }
2810
2811        fw_size -= 30;
2812        fw_ptr += 30;
2813        flag = 1;
2814
2815        wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
2816        wmt_params.status = NULL;
2817
2818        while (fw_size > 0) {
2819                dlen = min_t(int, 250, fw_size);
2820
2821                /* Tell deivice the position in sequence */
2822                if (fw_size - dlen <= 0)
2823                        flag = 3;
2824                else if (fw_size < fw->size - 30)
2825                        flag = 2;
2826
2827                wmt_params.flag = flag;
2828                wmt_params.dlen = dlen;
2829                wmt_params.data = fw_ptr;
2830
2831                err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2832                if (err < 0) {
2833                        bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
2834                                   err);
2835                        goto err_release_fw;
2836                }
2837
2838                fw_size -= dlen;
2839                fw_ptr += dlen;
2840        }
2841
2842        wmt_params.op = BTMTK_WMT_RST;
2843        wmt_params.flag = 4;
2844        wmt_params.dlen = 0;
2845        wmt_params.data = NULL;
2846        wmt_params.status = NULL;
2847
2848        /* Activate funciton the firmware providing to */
2849        err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2850        if (err < 0) {
2851                bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
2852                return err;
2853        }
2854
2855        /* Wait a few moments for firmware activation done */
2856        usleep_range(10000, 12000);
2857
2858err_release_fw:
2859        release_firmware(fw);
2860
2861        return err;
2862}
2863
2864static int btusb_mtk_func_query(struct hci_dev *hdev)
2865{
2866        struct btmtk_hci_wmt_params wmt_params;
2867        int status, err;
2868        u8 param = 0;
2869
2870        /* Query whether the function is enabled */
2871        wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2872        wmt_params.flag = 4;
2873        wmt_params.dlen = sizeof(param);
2874        wmt_params.data = &param;
2875        wmt_params.status = &status;
2876
2877        err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2878        if (err < 0) {
2879                bt_dev_err(hdev, "Failed to query function status (%d)", err);
2880                return err;
2881        }
2882
2883        return status;
2884}
2885
2886static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2887{
2888        int pipe, err, size = sizeof(u32);
2889        void *buf;
2890
2891        buf = kzalloc(size, GFP_KERNEL);
2892        if (!buf)
2893                return -ENOMEM;
2894
2895        pipe = usb_rcvctrlpipe(data->udev, 0);
2896        err = usb_control_msg(data->udev, pipe, 0x63,
2897                              USB_TYPE_VENDOR | USB_DIR_IN,
2898                              reg >> 16, reg & 0xffff,
2899                              buf, size, USB_CTRL_SET_TIMEOUT);
2900        if (err < 0)
2901                goto err_free_buf;
2902
2903        *val = get_unaligned_le32(buf);
2904
2905err_free_buf:
2906        kfree(buf);
2907
2908        return err;
2909}
2910
2911static int btusb_mtk_id_get(struct btusb_data *data, u32 *id)
2912{
2913        return btusb_mtk_reg_read(data, 0x80000008, id);
2914}
2915
2916static int btusb_mtk_setup(struct hci_dev *hdev)
2917{
2918        struct btusb_data *data = hci_get_drvdata(hdev);
2919        struct btmtk_hci_wmt_params wmt_params;
2920        ktime_t calltime, delta, rettime;
2921        struct btmtk_tci_sleep tci_sleep;
2922        unsigned long long duration;
2923        struct sk_buff *skb;
2924        const char *fwname;
2925        int err, status;
2926        u32 dev_id;
2927        u8 param;
2928
2929        calltime = ktime_get();
2930
2931        err = btusb_mtk_id_get(data, &dev_id);
2932        if (err < 0) {
2933                bt_dev_err(hdev, "Failed to get device id (%d)", err);
2934                return err;
2935        }
2936
2937        switch (dev_id) {
2938        case 0x7663:
2939                fwname = FIRMWARE_MT7663;
2940                break;
2941        case 0x7668:
2942                fwname = FIRMWARE_MT7668;
2943                break;
2944        default:
2945                bt_dev_err(hdev, "Unsupported support hardware variant (%08x)",
2946                           dev_id);
2947                return -ENODEV;
2948        }
2949
2950        /* Query whether the firmware is already download */
2951        wmt_params.op = BTMTK_WMT_SEMAPHORE;
2952        wmt_params.flag = 1;
2953        wmt_params.dlen = 0;
2954        wmt_params.data = NULL;
2955        wmt_params.status = &status;
2956
2957        err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2958        if (err < 0) {
2959                bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
2960                return err;
2961        }
2962
2963        if (status == BTMTK_WMT_PATCH_DONE) {
2964                bt_dev_info(hdev, "firmware already downloaded");
2965                goto ignore_setup_fw;
2966        }
2967
2968        /* Setup a firmware which the device definitely requires */
2969        err = btusb_mtk_setup_firmware(hdev, fwname);
2970        if (err < 0)
2971                return err;
2972
2973ignore_setup_fw:
2974        err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
2975                                 status < 0 || status != BTMTK_WMT_ON_PROGRESS,
2976                                 2000, 5000000);
2977        /* -ETIMEDOUT happens */
2978        if (err < 0)
2979                return err;
2980
2981        /* The other errors happen in btusb_mtk_func_query */
2982        if (status < 0)
2983                return status;
2984
2985        if (status == BTMTK_WMT_ON_DONE) {
2986                bt_dev_info(hdev, "function already on");
2987                goto ignore_func_on;
2988        }
2989
2990        /* Enable Bluetooth protocol */
2991        param = 1;
2992        wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2993        wmt_params.flag = 0;
2994        wmt_params.dlen = sizeof(param);
2995        wmt_params.data = &param;
2996        wmt_params.status = NULL;
2997
2998        err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2999        if (err < 0) {
3000                bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3001                return err;
3002        }
3003
3004ignore_func_on:
3005        /* Apply the low power environment setup */
3006        tci_sleep.mode = 0x5;
3007        tci_sleep.duration = cpu_to_le16(0x640);
3008        tci_sleep.host_duration = cpu_to_le16(0x640);
3009        tci_sleep.host_wakeup_pin = 0;
3010        tci_sleep.time_compensation = 0;
3011
3012        skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3013                             HCI_INIT_TIMEOUT);
3014        if (IS_ERR(skb)) {
3015                err = PTR_ERR(skb);
3016                bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3017                return err;
3018        }
3019        kfree_skb(skb);
3020
3021        rettime = ktime_get();
3022        delta = ktime_sub(rettime, calltime);
3023        duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3024
3025        bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3026
3027        return 0;
3028}
3029
3030static int btusb_mtk_shutdown(struct hci_dev *hdev)
3031{
3032        struct btmtk_hci_wmt_params wmt_params;
3033        u8 param = 0;
3034        int err;
3035
3036        /* Disable the device */
3037        wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3038        wmt_params.flag = 0;
3039        wmt_params.dlen = sizeof(param);
3040        wmt_params.data = &param;
3041        wmt_params.status = NULL;
3042
3043        err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3044        if (err < 0) {
3045                bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3046                return err;
3047        }
3048
3049        return 0;
3050}
3051
3052MODULE_FIRMWARE(FIRMWARE_MT7663);
3053MODULE_FIRMWARE(FIRMWARE_MT7668);
3054#endif
3055
3056#ifdef CONFIG_PM
3057/* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3058static int marvell_config_oob_wake(struct hci_dev *hdev)
3059{
3060        struct sk_buff *skb;
3061        struct btusb_data *data = hci_get_drvdata(hdev);
3062        struct device *dev = &data->udev->dev;
3063        u16 pin, gap, opcode;
3064        int ret;
3065        u8 cmd[5];
3066
3067        /* Move on if no wakeup pin specified */
3068        if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3069            of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3070                return 0;
3071
3072        /* Vendor specific command to configure a GPIO as wake-up pin */
3073        opcode = hci_opcode_pack(0x3F, 0x59);
3074        cmd[0] = opcode & 0xFF;
3075        cmd[1] = opcode >> 8;
3076        cmd[2] = 2; /* length of parameters that follow */
3077        cmd[3] = pin;
3078        cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3079
3080        skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3081        if (!skb) {
3082                bt_dev_err(hdev, "%s: No memory\n", __func__);
3083                return -ENOMEM;
3084        }
3085
3086        skb_put_data(skb, cmd, sizeof(cmd));
3087        hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3088
3089        ret = btusb_send_frame(hdev, skb);
3090        if (ret) {
3091                bt_dev_err(hdev, "%s: configuration failed\n", __func__);
3092                kfree_skb(skb);
3093                return ret;
3094        }
3095
3096        return 0;
3097}
3098#endif
3099
3100static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3101                                    const bdaddr_t *bdaddr)
3102{
3103        struct sk_buff *skb;
3104        u8 buf[8];
3105        long ret;
3106
3107        buf[0] = 0xfe;
3108        buf[1] = sizeof(bdaddr_t);
3109        memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3110
3111        skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3112        if (IS_ERR(skb)) {
3113                ret = PTR_ERR(skb);
3114                bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3115                           ret);
3116                return ret;
3117        }
3118        kfree_skb(skb);
3119
3120        return 0;
3121}
3122
3123static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3124                                    const bdaddr_t *bdaddr)
3125{
3126        struct sk_buff *skb;
3127        u8 buf[10];
3128        long ret;
3129
3130        buf[0] = 0x01;
3131        buf[1] = 0x01;
3132        buf[2] = 0x00;
3133        buf[3] = sizeof(bdaddr_t);
3134        memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3135
3136        skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3137        if (IS_ERR(skb)) {
3138                ret = PTR_ERR(skb);
3139                bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3140                return ret;
3141        }
3142        kfree_skb(skb);
3143
3144        return 0;
3145}
3146
3147#define QCA_DFU_PACKET_LEN      4096
3148
3149#define QCA_GET_TARGET_VERSION  0x09
3150#define QCA_CHECK_STATUS        0x05
3151#define QCA_DFU_DOWNLOAD        0x01
3152
3153#define QCA_SYSCFG_UPDATED      0x40
3154#define QCA_PATCH_UPDATED       0x80
3155#define QCA_DFU_TIMEOUT         3000
3156
3157struct qca_version {
3158        __le32  rom_version;
3159        __le32  patch_version;
3160        __le32  ram_version;
3161        __le32  ref_clock;
3162        __u8    reserved[4];
3163} __packed;
3164
3165struct qca_rampatch_version {
3166        __le16  rom_version;
3167        __le16  patch_version;
3168} __packed;
3169
3170struct qca_device_info {
3171        u32     rom_version;
3172        u8      rampatch_hdr;   /* length of header in rampatch */
3173        u8      nvm_hdr;        /* length of header in NVM */
3174        u8      ver_offset;     /* offset of version structure in rampatch */
3175};
3176
3177static const struct qca_device_info qca_devices_table[] = {
3178        { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
3179        { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
3180        { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
3181        { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
3182        { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
3183        { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
3184};
3185
3186static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3187                                     void *data, u16 size)
3188{
3189        int pipe, err;
3190        u8 *buf;
3191
3192        buf = kmalloc(size, GFP_KERNEL);
3193        if (!buf)
3194                return -ENOMEM;
3195
3196        /* Found some of USB hosts have IOT issues with ours so that we should
3197         * not wait until HCI layer is ready.
3198         */
3199        pipe = usb_rcvctrlpipe(udev, 0);
3200        err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3201                              0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3202        if (err < 0) {
3203                dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3204                goto done;
3205        }
3206
3207        memcpy(data, buf, size);
3208
3209done:
3210        kfree(buf);
3211
3212        return err;
3213}
3214
3215static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3216                                       const struct firmware *firmware,
3217                                       size_t hdr_size)
3218{
3219        struct btusb_data *btdata = hci_get_drvdata(hdev);
3220        struct usb_device *udev = btdata->udev;
3221        size_t count, size, sent = 0;
3222        int pipe, len, err;
3223        u8 *buf;
3224
3225        buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3226        if (!buf)
3227                return -ENOMEM;
3228
3229        count = firmware->size;
3230
3231        size = min_t(size_t, count, hdr_size);
3232        memcpy(buf, firmware->data, size);
3233
3234        /* USB patches should go down to controller through USB path
3235         * because binary format fits to go down through USB channel.
3236         * USB control path is for patching headers and USB bulk is for
3237         * patch body.
3238         */
3239        pipe = usb_sndctrlpipe(udev, 0);
3240        err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3241                              0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3242        if (err < 0) {
3243                bt_dev_err(hdev, "Failed to send headers (%d)", err);
3244                goto done;
3245        }
3246
3247        sent += size;
3248        count -= size;
3249
3250        while (count) {
3251                size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3252
3253                memcpy(buf, firmware->data + sent, size);
3254
3255                pipe = usb_sndbulkpipe(udev, 0x02);
3256                err = usb_bulk_msg(udev, pipe, buf, size, &len,
3257                                   QCA_DFU_TIMEOUT);
3258                if (err < 0) {
3259                        bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3260                                   sent, firmware->size, err);
3261                        break;
3262                }
3263
3264                if (size != len) {
3265                        bt_dev_err(hdev, "Failed to get bulk buffer");
3266                        err = -EILSEQ;
3267                        break;
3268                }
3269
3270                sent  += size;
3271                count -= size;
3272        }
3273
3274done:
3275        kfree(buf);
3276        return err;
3277}
3278
3279static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3280                                         struct qca_version *ver,
3281                                         const struct qca_device_info *info)
3282{
3283        struct qca_rampatch_version *rver;
3284        const struct firmware *fw;
3285        u32 ver_rom, ver_patch;
3286        u16 rver_rom, rver_patch;
3287        char fwname[64];
3288        int err;
3289
3290        ver_rom = le32_to_cpu(ver->rom_version);
3291        ver_patch = le32_to_cpu(ver->patch_version);
3292
3293        snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3294
3295        err = request_firmware(&fw, fwname, &hdev->dev);
3296        if (err) {
3297                bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3298                           fwname, err);
3299                return err;
3300        }
3301
3302        bt_dev_info(hdev, "using rampatch file: %s", fwname);
3303
3304        rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3305        rver_rom = le16_to_cpu(rver->rom_version);
3306        rver_patch = le16_to_cpu(rver->patch_version);
3307
3308        bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3309                    "firmware rome 0x%x build 0x%x",
3310                    rver_rom, rver_patch, ver_rom, ver_patch);
3311
3312        if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3313                bt_dev_err(hdev, "rampatch file version did not match with firmware");
3314                err = -EINVAL;
3315                goto done;
3316        }
3317
3318        err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3319
3320done:
3321        release_firmware(fw);
3322
3323        return err;
3324}
3325
3326static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3327                                    struct qca_version *ver,
3328                                    const struct qca_device_info *info)
3329{
3330        const struct firmware *fw;
3331        char fwname[64];
3332        int err;
3333
3334        snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
3335                 le32_to_cpu(ver->rom_version));
3336
3337        err = request_firmware(&fw, fwname, &hdev->dev);
3338        if (err) {
3339                bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3340                           fwname, err);
3341                return err;
3342        }
3343
3344        bt_dev_info(hdev, "using NVM file: %s", fwname);
3345
3346        err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3347
3348        release_firmware(fw);
3349
3350        return err;
3351}
3352
3353/* identify the ROM version and check whether patches are needed */
3354static bool btusb_qca_need_patch(struct usb_device *udev)
3355{
3356        struct qca_version ver;
3357
3358        if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3359                                      sizeof(ver)) < 0)
3360                return false;
3361        /* only low ROM versions need patches */
3362        return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3363}
3364
3365static int btusb_setup_qca(struct hci_dev *hdev)
3366{
3367        struct btusb_data *btdata = hci_get_drvdata(hdev);
3368        struct usb_device *udev = btdata->udev;
3369        const struct qca_device_info *info = NULL;
3370        struct qca_version ver;
3371        u32 ver_rom;
3372        u8 status;
3373        int i, err;
3374
3375        err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3376                                        sizeof(ver));
3377        if (err < 0)
3378                return err;
3379
3380        ver_rom = le32_to_cpu(ver.rom_version);
3381        /* Don't care about high ROM versions */
3382        if (ver_rom & ~0xffffU)
3383                return 0;
3384
3385        for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3386                if (ver_rom == qca_devices_table[i].rom_version)
3387                        info = &qca_devices_table[i];
3388        }
3389        if (!info) {
3390                bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3391                return -ENODEV;
3392        }
3393
3394        err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3395                                        sizeof(status));
3396        if (err < 0)
3397                return err;
3398
3399        if (!(status & QCA_PATCH_UPDATED)) {
3400                err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3401                if (err < 0)
3402                        return err;
3403        }
3404
3405        if (!(status & QCA_SYSCFG_UPDATED)) {
3406                err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3407                if (err < 0)
3408                        return err;
3409        }
3410
3411        return 0;
3412}
3413
3414#ifdef CONFIG_BT_HCIBTUSB_BCM
3415static inline int __set_diag_interface(struct hci_dev *hdev)
3416{
3417        struct btusb_data *data = hci_get_drvdata(hdev);
3418        struct usb_interface *intf = data->diag;
3419        int i;
3420
3421        if (!data->diag)
3422                return -ENODEV;
3423
3424        data->diag_tx_ep = NULL;
3425        data->diag_rx_ep = NULL;
3426
3427        for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3428                struct usb_endpoint_descriptor *ep_desc;
3429
3430                ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3431
3432                if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3433                        data->diag_tx_ep = ep_desc;
3434                        continue;
3435                }
3436
3437                if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3438                        data->diag_rx_ep = ep_desc;
3439                        continue;
3440                }
3441        }
3442
3443        if (!data->diag_tx_ep || !data->diag_rx_ep) {
3444                bt_dev_err(hdev, "invalid diagnostic descriptors");
3445                return -ENODEV;
3446        }
3447
3448        return 0;
3449}
3450
3451static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3452{
3453        struct btusb_data *data = hci_get_drvdata(hdev);
3454        struct sk_buff *skb;
3455        struct urb *urb;
3456        unsigned int pipe;
3457
3458        if (!data->diag_tx_ep)
3459                return ERR_PTR(-ENODEV);
3460
3461        urb = usb_alloc_urb(0, GFP_KERNEL);
3462        if (!urb)
3463                return ERR_PTR(-ENOMEM);
3464
3465        skb = bt_skb_alloc(2, GFP_KERNEL);
3466        if (!skb) {
3467                usb_free_urb(urb);
3468                return ERR_PTR(-ENOMEM);
3469        }
3470
3471        skb_put_u8(skb, 0xf0);
3472        skb_put_u8(skb, enable);
3473
3474        pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3475
3476        usb_fill_bulk_urb(urb, data->udev, pipe,
3477                          skb->data, skb->len, btusb_tx_complete, skb);
3478
3479        skb->dev = (void *)hdev;
3480
3481        return urb;
3482}
3483
3484static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3485{
3486        struct btusb_data *data = hci_get_drvdata(hdev);
3487        struct urb *urb;
3488
3489        if (!data->diag)
3490                return -ENODEV;
3491
3492        if (!test_bit(HCI_RUNNING, &hdev->flags))
3493                return -ENETDOWN;
3494
3495        urb = alloc_diag_urb(hdev, enable);
3496        if (IS_ERR(urb))
3497                return PTR_ERR(urb);
3498
3499        return submit_or_queue_tx_urb(hdev, urb);
3500}
3501#endif
3502
3503#ifdef CONFIG_PM
3504static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3505{
3506        struct btusb_data *data = priv;
3507
3508        pm_wakeup_event(&data->udev->dev, 0);
3509        pm_system_wakeup();
3510
3511        /* Disable only if not already disabled (keep it balanced) */
3512        if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3513                disable_irq_nosync(irq);
3514                disable_irq_wake(irq);
3515        }
3516        return IRQ_HANDLED;
3517}
3518
3519static const struct of_device_id btusb_match_table[] = {
3520        { .compatible = "usb1286,204e" },
3521        { .compatible = "usbcf3,e300" }, /* QCA6174A */
3522        { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3523        { }
3524};
3525MODULE_DEVICE_TABLE(of, btusb_match_table);
3526
3527/* Use an oob wakeup pin? */
3528static int btusb_config_oob_wake(struct hci_dev *hdev)
3529{
3530        struct btusb_data *data = hci_get_drvdata(hdev);
3531        struct device *dev = &data->udev->dev;
3532        int irq, ret;
3533
3534        clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3535
3536        if (!of_match_device(btusb_match_table, dev))
3537                return 0;
3538
3539        /* Move on if no IRQ specified */
3540        irq = of_irq_get_byname(dev->of_node, "wakeup");
3541        if (irq <= 0) {
3542                bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3543                return 0;
3544        }
3545
3546        irq_set_status_flags(irq, IRQ_NOAUTOEN);
3547        ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3548                               0, "OOB Wake-on-BT", data);
3549        if (ret) {
3550                bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3551                return ret;
3552        }
3553
3554        ret = device_init_wakeup(dev, true);
3555        if (ret) {
3556                bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3557                return ret;
3558        }
3559
3560        data->oob_wake_irq = irq;
3561        bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3562        return 0;
3563}
3564#endif
3565
3566static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3567{
3568        if (dmi_check_system(btusb_needs_reset_resume_table))
3569                interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3570}
3571
3572static int btusb_probe(struct usb_interface *intf,
3573                       const struct usb_device_id *id)
3574{
3575        struct usb_endpoint_descriptor *ep_desc;
3576        struct gpio_desc *reset_gpio;
3577        struct btusb_data *data;
3578        struct hci_dev *hdev;
3579        unsigned ifnum_base;
3580        int i, err;
3581
3582        BT_DBG("intf %p id %p", intf, id);
3583
3584        /* interface numbers are hardcoded in the spec */
3585        if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3586                if (!(id->driver_info & BTUSB_IFNUM_2))
3587                        return -ENODEV;
3588                if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3589                        return -ENODEV;
3590        }
3591
3592        ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3593
3594        if (!id->driver_info) {
3595                const struct usb_device_id *match;
3596
3597                match = usb_match_id(intf, blacklist_table);
3598                if (match)
3599                        id = match;
3600        }
3601
3602        if (id->driver_info == BTUSB_IGNORE)
3603                return -ENODEV;
3604
3605        if (id->driver_info & BTUSB_ATH3012) {
3606                struct usb_device *udev = interface_to_usbdev(intf);
3607
3608                /* Old firmware would otherwise let ath3k driver load
3609                 * patch and sysconfig files
3610                 */
3611                if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3612                    !btusb_qca_need_patch(udev))
3613                        return -ENODEV;
3614        }
3615
3616        data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3617        if (!data)
3618                return -ENOMEM;
3619
3620        for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3621                ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3622
3623                if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3624                        data->intr_ep = ep_desc;
3625                        continue;
3626                }
3627
3628                if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3629                        data->bulk_tx_ep = ep_desc;
3630                        continue;
3631                }
3632
3633                if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3634                        data->bulk_rx_ep = ep_desc;
3635                        continue;
3636                }
3637        }
3638
3639        if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3640                return -ENODEV;
3641
3642        if (id->driver_info & BTUSB_AMP) {
3643                data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3644                data->cmdreq = 0x2b;
3645        } else {
3646                data->cmdreq_type = USB_TYPE_CLASS;
3647                data->cmdreq = 0x00;
3648        }
3649
3650        data->udev = interface_to_usbdev(intf);
3651        data->intf = intf;
3652
3653        INIT_WORK(&data->work, btusb_work);
3654        INIT_WORK(&data->waker, btusb_waker);
3655        init_usb_anchor(&data->deferred);
3656        init_usb_anchor(&data->tx_anchor);
3657        spin_lock_init(&data->txlock);
3658
3659        init_usb_anchor(&data->intr_anchor);
3660        init_usb_anchor(&data->bulk_anchor);
3661        init_usb_anchor(&data->isoc_anchor);
3662        init_usb_anchor(&data->diag_anchor);
3663        init_usb_anchor(&data->ctrl_anchor);
3664        spin_lock_init(&data->rxlock);
3665
3666        if (id->driver_info & BTUSB_INTEL_NEW) {
3667                data->recv_event = btusb_recv_event_intel;
3668                data->recv_bulk = btusb_recv_bulk_intel;
3669                set_bit(BTUSB_BOOTLOADER, &data->flags);
3670        } else {
3671                data->recv_event = hci_recv_frame;
3672                data->recv_bulk = btusb_recv_bulk;
3673        }
3674
3675        hdev = hci_alloc_dev();
3676        if (!hdev)
3677                return -ENOMEM;
3678
3679        hdev->bus = HCI_USB;
3680        hci_set_drvdata(hdev, data);
3681
3682        if (id->driver_info & BTUSB_AMP)
3683                hdev->dev_type = HCI_AMP;
3684        else
3685                hdev->dev_type = HCI_PRIMARY;
3686
3687        data->hdev = hdev;
3688
3689        SET_HCIDEV_DEV(hdev, &intf->dev);
3690
3691        reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3692                                        GPIOD_OUT_LOW);
3693        if (IS_ERR(reset_gpio)) {
3694                err = PTR_ERR(reset_gpio);
3695                goto out_free_dev;
3696        } else if (reset_gpio) {
3697                data->reset_gpio = reset_gpio;
3698        }
3699
3700        hdev->open   = btusb_open;
3701        hdev->close  = btusb_close;
3702        hdev->flush  = btusb_flush;
3703        hdev->send   = btusb_send_frame;
3704        hdev->notify = btusb_notify;
3705
3706#ifdef CONFIG_PM
3707        err = btusb_config_oob_wake(hdev);
3708        if (err)
3709                goto out_free_dev;
3710
3711        /* Marvell devices may need a specific chip configuration */
3712        if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3713                err = marvell_config_oob_wake(hdev);
3714                if (err)
3715                        goto out_free_dev;
3716        }
3717#endif
3718        if (id->driver_info & BTUSB_CW6622)
3719                set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3720
3721        if (id->driver_info & BTUSB_BCM2045)
3722                set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3723
3724        if (id->driver_info & BTUSB_BCM92035)
3725                hdev->setup = btusb_setup_bcm92035;
3726
3727#ifdef CONFIG_BT_HCIBTUSB_BCM
3728        if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3729                hdev->manufacturer = 15;
3730                hdev->setup = btbcm_setup_patchram;
3731                hdev->set_diag = btusb_bcm_set_diag;
3732                hdev->set_bdaddr = btbcm_set_bdaddr;
3733
3734                /* Broadcom LM_DIAG Interface numbers are hardcoded */
3735                data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3736        }
3737
3738        if (id->driver_info & BTUSB_BCM_APPLE) {
3739                hdev->manufacturer = 15;
3740                hdev->setup = btbcm_setup_apple;
3741                hdev->set_diag = btusb_bcm_set_diag;
3742
3743                /* Broadcom LM_DIAG Interface numbers are hardcoded */
3744                data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3745        }
3746#endif
3747
3748        if (id->driver_info & BTUSB_INTEL) {
3749                hdev->manufacturer = 2;
3750                hdev->setup = btusb_setup_intel;
3751                hdev->shutdown = btusb_shutdown_intel;
3752                hdev->set_diag = btintel_set_diag_mfg;
3753                hdev->set_bdaddr = btintel_set_bdaddr;
3754                hdev->cmd_timeout = btusb_intel_cmd_timeout;
3755                set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3756                set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3757                set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3758        }
3759
3760        if (id->driver_info & BTUSB_INTEL_NEW) {
3761                hdev->manufacturer = 2;
3762                hdev->send = btusb_send_frame_intel;
3763                hdev->setup = btusb_setup_intel_new;
3764                hdev->shutdown = btusb_shutdown_intel_new;
3765                hdev->hw_error = btintel_hw_error;
3766                hdev->set_diag = btintel_set_diag;
3767                hdev->set_bdaddr = btintel_set_bdaddr;
3768                hdev->cmd_timeout = btusb_intel_cmd_timeout;
3769                set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3770                set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3771                set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3772        }
3773
3774        if (id->driver_info & BTUSB_MARVELL)
3775                hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3776
3777#ifdef CONFIG_BT_HCIBTUSB_MTK
3778        if (id->driver_info & BTUSB_MEDIATEK) {
3779                hdev->setup = btusb_mtk_setup;
3780                hdev->shutdown = btusb_mtk_shutdown;
3781                hdev->manufacturer = 70;
3782                set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
3783        }
3784#endif
3785
3786        if (id->driver_info & BTUSB_SWAVE) {
3787                set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3788                set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3789        }
3790
3791        if (id->driver_info & BTUSB_INTEL_BOOT) {
3792                hdev->manufacturer = 2;
3793                set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3794        }
3795
3796        if (id->driver_info & BTUSB_ATH3012) {
3797                data->setup_on_usb = btusb_setup_qca;
3798                hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3799                set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3800                set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3801        }
3802
3803        if (id->driver_info & BTUSB_QCA_ROME) {
3804                data->setup_on_usb = btusb_setup_qca;
3805                hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3806                set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3807                btusb_check_needs_reset_resume(intf);
3808        }
3809
3810#ifdef CONFIG_BT_HCIBTUSB_RTL
3811        if (id->driver_info & BTUSB_REALTEK) {
3812                hdev->setup = btrtl_setup_realtek;
3813                hdev->shutdown = btrtl_shutdown_realtek;
3814                hdev->cmd_timeout = btusb_rtl_cmd_timeout;
3815
3816                /* Realtek devices lose their updated firmware over global
3817                 * suspend that means host doesn't send SET_FEATURE
3818                 * (DEVICE_REMOTE_WAKEUP)
3819                 */
3820                set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
3821        }
3822#endif
3823
3824        if (id->driver_info & BTUSB_AMP) {
3825                /* AMP controllers do not support SCO packets */
3826                data->isoc = NULL;
3827        } else {
3828                /* Interface orders are hardcoded in the specification */
3829                data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3830                data->isoc_ifnum = ifnum_base + 1;
3831        }
3832
3833        if (!reset)
3834                set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3835
3836        if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3837                if (!disable_scofix)
3838                        set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3839        }
3840
3841        if (id->driver_info & BTUSB_BROKEN_ISOC)
3842                data->isoc = NULL;
3843
3844        if (id->driver_info & BTUSB_DIGIANSWER) {
3845                data->cmdreq_type = USB_TYPE_VENDOR;
3846                set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3847        }
3848
3849        if (id->driver_info & BTUSB_CSR) {
3850                struct usb_device *udev = data->udev;
3851                u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3852
3853                /* Old firmware would otherwise execute USB reset */
3854                if (bcdDevice < 0x117)
3855                        set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3856
3857                /* Fake CSR devices with broken commands */
3858                if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3859                        hdev->setup = btusb_setup_csr;
3860
3861                set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3862        }
3863
3864        if (id->driver_info & BTUSB_SNIFFER) {
3865                struct usb_device *udev = data->udev;
3866
3867                /* New sniffer firmware has crippled HCI interface */
3868                if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3869                        set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3870        }
3871
3872        if (id->driver_info & BTUSB_INTEL_BOOT) {
3873                /* A bug in the bootloader causes that interrupt interface is
3874                 * only enabled after receiving SetInterface(0, AltSetting=0).
3875                 */
3876                err = usb_set_interface(data->udev, 0, 0);
3877                if (err < 0) {
3878                        BT_ERR("failed to set interface 0, alt 0 %d", err);
3879                        goto out_free_dev;
3880                }
3881        }
3882
3883        if (data->isoc) {
3884                err = usb_driver_claim_interface(&btusb_driver,
3885                                                 data->isoc, data);
3886                if (err < 0)
3887                        goto out_free_dev;
3888        }
3889
3890#ifdef CONFIG_BT_HCIBTUSB_BCM
3891        if (data->diag) {
3892                if (!usb_driver_claim_interface(&btusb_driver,
3893                                                data->diag, data))
3894                        __set_diag_interface(hdev);
3895                else
3896                        data->diag = NULL;
3897        }
3898#endif
3899
3900        if (enable_autosuspend)
3901                usb_enable_autosuspend(data->udev);
3902
3903        err = hci_register_dev(hdev);
3904        if (err < 0)
3905                goto out_free_dev;
3906
3907        usb_set_intfdata(intf, data);
3908
3909        return 0;
3910
3911out_free_dev:
3912        if (data->reset_gpio)
3913                gpiod_put(data->reset_gpio);
3914        hci_free_dev(hdev);
3915        return err;
3916}
3917
3918static void btusb_disconnect(struct usb_interface *intf)
3919{
3920        struct btusb_data *data = usb_get_intfdata(intf);
3921        struct hci_dev *hdev;
3922
3923        BT_DBG("intf %p", intf);
3924
3925        if (!data)
3926                return;
3927
3928        hdev = data->hdev;
3929        usb_set_intfdata(data->intf, NULL);
3930
3931        if (data->isoc)
3932                usb_set_intfdata(data->isoc, NULL);
3933
3934        if (data->diag)
3935                usb_set_intfdata(data->diag, NULL);
3936
3937        hci_unregister_dev(hdev);
3938
3939        if (intf == data->intf) {
3940                if (data->isoc)
3941                        usb_driver_release_interface(&btusb_driver, data->isoc);
3942                if (data->diag)
3943                        usb_driver_release_interface(&btusb_driver, data->diag);
3944        } else if (intf == data->isoc) {
3945                if (data->diag)
3946                        usb_driver_release_interface(&btusb_driver, data->diag);
3947                usb_driver_release_interface(&btusb_driver, data->intf);
3948        } else if (intf == data->diag) {
3949                usb_driver_release_interface(&btusb_driver, data->intf);
3950                if (data->isoc)
3951                        usb_driver_release_interface(&btusb_driver, data->isoc);
3952        }
3953
3954        if (data->oob_wake_irq)
3955                device_init_wakeup(&data->udev->dev, false);
3956
3957        if (data->reset_gpio)
3958                gpiod_put(data->reset_gpio);
3959
3960        hci_free_dev(hdev);
3961}
3962
3963#ifdef CONFIG_PM
3964static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3965{
3966        struct btusb_data *data = usb_get_intfdata(intf);
3967
3968        BT_DBG("intf %p", intf);
3969
3970        if (data->suspend_count++)
3971                return 0;
3972
3973        spin_lock_irq(&data->txlock);
3974        if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3975                set_bit(BTUSB_SUSPENDING, &data->flags);
3976                spin_unlock_irq(&data->txlock);
3977        } else {
3978                spin_unlock_irq(&data->txlock);
3979                data->suspend_count--;
3980                return -EBUSY;
3981        }
3982
3983        cancel_work_sync(&data->work);
3984
3985        btusb_stop_traffic(data);
3986        usb_kill_anchored_urbs(&data->tx_anchor);
3987
3988        if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
3989                set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3990                enable_irq_wake(data->oob_wake_irq);
3991                enable_irq(data->oob_wake_irq);
3992        }
3993
3994        /* For global suspend, Realtek devices lose the loaded fw
3995         * in them. But for autosuspend, firmware should remain.
3996         * Actually, it depends on whether the usb host sends
3997         * set feature (enable wakeup) or not.
3998         */
3999        if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4000                if (PMSG_IS_AUTO(message) &&
4001                    device_can_wakeup(&data->udev->dev))
4002                        data->udev->do_remote_wakeup = 1;
4003                else if (!PMSG_IS_AUTO(message))
4004                        data->udev->reset_resume = 1;
4005        }
4006
4007        return 0;
4008}
4009
4010static void play_deferred(struct btusb_data *data)
4011{
4012        struct urb *urb;
4013        int err;
4014
4015        while ((urb = usb_get_from_anchor(&data->deferred))) {
4016                usb_anchor_urb(urb, &data->tx_anchor);
4017
4018                err = usb_submit_urb(urb, GFP_ATOMIC);
4019                if (err < 0) {
4020                        if (err != -EPERM && err != -ENODEV)
4021                                BT_ERR("%s urb %p submission failed (%d)",
4022                                       data->hdev->name, urb, -err);
4023                        kfree(urb->setup_packet);
4024                        usb_unanchor_urb(urb);
4025                        usb_free_urb(urb);
4026                        break;
4027                }
4028
4029                data->tx_in_flight++;
4030                usb_free_urb(urb);
4031        }
4032
4033        /* Cleanup the rest deferred urbs. */
4034        while ((urb = usb_get_from_anchor(&data->deferred))) {
4035                kfree(urb->setup_packet);
4036                usb_free_urb(urb);
4037        }
4038}
4039
4040static int btusb_resume(struct usb_interface *intf)
4041{
4042        struct btusb_data *data = usb_get_intfdata(intf);
4043        struct hci_dev *hdev = data->hdev;
4044        int err = 0;
4045
4046        BT_DBG("intf %p", intf);
4047
4048        if (--data->suspend_count)
4049                return 0;
4050
4051        /* Disable only if not already disabled (keep it balanced) */
4052        if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4053                disable_irq(data->oob_wake_irq);
4054                disable_irq_wake(data->oob_wake_irq);
4055        }
4056
4057        if (!test_bit(HCI_RUNNING, &hdev->flags))
4058                goto done;
4059
4060        if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4061                err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4062                if (err < 0) {
4063                        clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4064                        goto failed;
4065                }
4066        }
4067
4068        if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4069                err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4070                if (err < 0) {
4071                        clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4072                        goto failed;
4073                }
4074
4075                btusb_submit_bulk_urb(hdev, GFP_NOIO);
4076        }
4077
4078        if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4079                if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4080                        clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4081                else
4082                        btusb_submit_isoc_urb(hdev, GFP_NOIO);
4083        }
4084
4085        spin_lock_irq(&data->txlock);
4086        play_deferred(data);
4087        clear_bit(BTUSB_SUSPENDING, &data->flags);
4088        spin_unlock_irq(&data->txlock);
4089        schedule_work(&data->work);
4090
4091        return 0;
4092
4093failed:
4094        usb_scuttle_anchored_urbs(&data->deferred);
4095done:
4096        spin_lock_irq(&data->txlock);
4097        clear_bit(BTUSB_SUSPENDING, &data->flags);
4098        spin_unlock_irq(&data->txlock);
4099
4100        return err;
4101}
4102#endif
4103
4104static struct usb_driver btusb_driver = {
4105        .name           = "btusb",
4106        .probe          = btusb_probe,
4107        .disconnect     = btusb_disconnect,
4108#ifdef CONFIG_PM
4109        .suspend        = btusb_suspend,
4110        .resume         = btusb_resume,
4111#endif
4112        .id_table       = btusb_table,
4113        .supports_autosuspend = 1,
4114        .disable_hub_initiated_lpm = 1,
4115};
4116
4117module_usb_driver(btusb_driver);
4118
4119module_param(disable_scofix, bool, 0644);
4120MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4121
4122module_param(force_scofix, bool, 0644);
4123MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4124
4125module_param(enable_autosuspend, bool, 0644);
4126MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4127
4128module_param(reset, bool, 0644);
4129MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4130
4131MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4132MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4133MODULE_VERSION(VERSION);
4134MODULE_LICENSE("GPL");
4135