HalpPiix4Detect

CHAR __stdcall HalpPiix4Detect(CHAR a1){
  int v1; 
  INT64 v3; 
  NTSTATUS BusData; 
  CHAR CpuInfo; 
  ULONG v6; 
  UINT8 v7; 
  INT64 v8; 
  unsigned int v9; 
  NTSTATUS v10; 
  unsigned __int8 v11; 
  ULONG v12; 
  bool v13; 
  ULONG v14; 
  INT64 v15; 
  VOID *v16; 
  _UNICODE_STRING *Class; 
  _UNICODE_STRING *Classa; 
  UINT64 CreateOptions; 
  UINT64 CreateOptionsa; 
  UINT64 *Disposition; 
  INT64 v23; 
  UINT8 v24[8]; 
  VOID *Handle; 
  UINT64 v26; 
  VOID *KeyHandle; 
  UINT64 ObjectAttributes[7]; 
  __int64 v29[2]; 
  __int64 v30[2]; 
  __int64 v31[2]; 
  _UNICODE_STRING ValueName; 
  __int16 Buffer[32]; 
  __int128 KeyValueInformation; 
  int v35; 

  v1 = 0;
  KeyHandle = 0i64;
  v24[0] = 0;
  LODWORD(v26) = 0;
  v24[1] = 0;
  *(_DWORD *)&v24[4] = 0;
  Handle = 0i64;
  v24[2] = 0;
  LODWORD(ObjectAttributes[0]) = 0;
  memset(&ObjectAttributes[1], 0, 48);
  memset(Buffer, 0i64, sizeof(Buffer));
  *(_QWORD *)&ValueName.Length = 2490404i64;
  ValueName.Buffer = L"EnableBXWorkAround";
  v31[0] = 3276848i64;
  v31[1] = (__int64)L"Services\\ACPI\\Parameters";
  v30[0] = 1572886i64;
  v30[1] = (__int64)L"Control\\HAL";
  v29[0] = 5636180i64;
  v29[1] = (__int64)L"\\REGISTRY\\MACHINE\\SYSTEM\\CURRENTCONTROLSET";
  LOBYTE(BusData) = 0;
  v35 = 0;
  KeyValueInformation = 0i64;
  if( a1 )
  {
    LODWORD(ObjectAttributes[1]) = 48;
    ObjectAttributes[3] = (UINT64)v29;
    ObjectAttributes[2] = 0i64;
    LODWORD(ObjectAttributes[4]) = 64;
    *(_OWORD *)&ObjectAttributes[5] = 0i64;
    BusData = ZwOpenKey(
                &KeyHandle,
                0x20019ui64,
                (_OBJECT_ATTRIBUTES *)&ObjectAttributes[1],
                v3,
                (INT64)Class,
                CreateOptions,
                (INT64)Disposition,
                v23);
    if( BusData < 0 )
      return BusData;
    ObjectAttributes[2] = (UINT64)KeyHandle;
    LODWORD(ObjectAttributes[1]) = 48;
    ObjectAttributes[3] = (UINT64)v30;
    LODWORD(ObjectAttributes[4]) = 64;
    LODWORD(CreateOptionsa) = 0;
    *(_OWORD *)&ObjectAttributes[5] = 0i64;
    BusData = ZwCreateKey(
                &Handle,
                0x20019ui64,
                (_OBJECT_ATTRIBUTES *)&ObjectAttributes[1],
                0i64,
                0i64,
                CreateOptionsa,
                &v26);
    if( BusData < 0 )
      goto LABEL_74;
  }
  else if( !*(&CmpDummyThreadEvent + 4985) )
  {
    return BusData;
  }
  CpuInfo = HalpGetCpuInfo(0i64, 0i64, 0i64, v24);
  v6 = 0;
  v7 = CpuInfo != 0 ? v24[0] : 0;
  v24[0] = 0;
LABEL_7:
  LODWORD(v8) = 0;
  v9 = 0;
  while( 1 )
  {
    v8 = v9 & 0x1F | v8 & 0xFFFFFF00 | (32 * (v1 & 7u));
    BusData = HalGetBusData(4i64, v6, v8, (INT64)Buffer, 2u);
    if( !BusData )
      break;
    LOBYTE(BusData) = LOBYTE(Buffer[0]) - 1;
    if( (unsigned __int16)(Buffer[0] - 1) > 0xFFFDu )
    {
      v13 = v1 == 0;
LABEL_57:
      if( !v13 )
        goto LABEL_58;
LABEL_59:
      ++v9;
      v1 = 0;
      if( v9 >= 0x20 )
      {
        if( ++v6 >= 0x100 )
          break;
        goto LABEL_7;
      }
    }
    else
    {
      BusData = HalGetBusData(4i64, v6, (unsigned int)v8, (INT64)Buffer, 0x10u);
      if( !BusData )
        goto LABEL_58;
      v10 = HalpInterruptModel();
      v11 = Buffer[4];
      v12 = 1;
      if( v10 == 1 )
      {
        if( !a1 )
          goto LABEL_51;
        if( !v6 && !v9 && !v1 && Buffer[0] == 4358 && LOBYTE(Buffer[4]) < 0x80u )
          HalpInterruptSetMsiOverride(0);
      }
      if( !a1 )
        goto LABEL_51;
      if( Buffer[0] == -32634 && ((Buffer[1] - 29072) & 0xFFFD) == 0 && v11 <= 2u )
      {
        v24[2] = v12;
        HalGetBusDataByOffset(PCIConfiguration, v6, v8, &v24[1], 0x57u, v12);
        v11 = Buffer[4];
        if( ((v24[1] >> 5) & ((v24[1] & 0x18) != 0)) != 0 )
          byte_140C49D28 = 1;
      }
      if( (int)HalpGetChipHacks(Buffer[0], Buffer[1], v11, &v24[4]) >= 0 )
      {
        if( (v24[4] & 2) != 0 )
          byte_140C49EF4 = 1;
        if( (v24[4] & 8) != 0 )
          HalpWhackICHUsbSmi(v6, v8);
      }
      if( v7 != 2 || v24[0] )
        goto LABEL_51;
      LOBYTE(BusData) = -122;
      if( Buffer[0] != -32634 )
        goto LABEL_54;
      if( v6 )
        goto LABEL_52;
      LOWORD(BusData) = Buffer[1];
      if( v9 == 17 )
      {
        if( !v1 && Buffer[1] == -26416 )
          goto LABEL_50;
        if( v1 != 1 )
          goto LABEL_53;
        if( Buffer[1] == -26415 )
          goto LABEL_50;
      }
      if( v9 != 16 )
        goto LABEL_53;
      if( v1 == 6 && Buffer[1] == -24368 || v1 == 7 && Buffer[1] == -24367 )
        goto LABEL_50;
      if( v1 == 6 )
      {
        if( Buffer[1] != 17360 )
          goto LABEL_53;
        if( !LOBYTE(Buffer[4]) )
          goto LABEL_50;
      }
      if( v1 == 7 && Buffer[1] == 17361 )
      {
        if( LOBYTE(Buffer[4]) )
          goto LABEL_58;
LABEL_50:
        v24[0] = 1;
        HalpInterruptSetLineSpecificOverride(0x17ui64);
        HalpInterruptSetLineSpecificOverride(0x16ui64);
LABEL_51:
        LOBYTE(BusData) = -122;
        if( Buffer[0] != -32634 )
          goto LABEL_54;
LABEL_52:
        LOWORD(BusData) = Buffer[1];
      }
LABEL_53:
      if( (_WORD)BusData == 28944 )
      {
        *(&CmpDummyThreadEvent + 4985) = 1;
        v14 = v8 & 0xFFFFFF1F | 0x60;
        HalGetBusData(4i64, v6, v14, (INT64)Buffer, 0x40u);
        LOBYTE(v15) = Buffer[4];
        byte_140C49D48 = Buffer[4];
        if( (dword_140C49EF0 & 2) == 0 )
          KeBugCheckEx(0x5Cu, (PVOID)0x111, "minkernel\\hals\\lib\\acpi\\xxacpi.c", (PVOID)0x66D, 0i64);
        if( LOBYTE(Buffer[4]) <= 1u )
        {
          BusNumber = v6;
          SlotNumber = v14;
          HalGetBusDataByOffset(PCIConfiguration, v6, v14, &dword_140C49D44, 0x58u, 4u);
          *(_DWORD *)&dword_140C49D44 |= 0x23u;
          HalSetBusDataByOffset(PCIConfiguration, BusNumber, SlotNumber, &dword_140C49D44, 0x58u, 4u);
        }
        LOBYTE(BusData) = HalpUsbLegacyStopUhciInterrupt(v15, v6, v14 & 0xFFFFFF5F, 1);
        break;
      }
LABEL_54:
      if( !v1 )
      {
        v13 = SLOBYTE(Buffer[7]) >= 0;
        goto LABEL_57;
      }
LABEL_58:
      if( (unsigned int)++v1 >= 8 )
        goto LABEL_59;
    }
  }
  if( a1 )
  {
    v16 = Handle;
    if( Handle )
    {
      LOBYTE(BusData) = ZwClose((_HANDLE)Handle);
      v16 = 0i64;
      Handle = 0i64;
    }
    if( v24[2] )
    {
      ObjectAttributes[2] = (UINT64)KeyHandle;
      LODWORD(ObjectAttributes[1]) = 48;
      ObjectAttributes[3] = (UINT64)v31;
      LODWORD(ObjectAttributes[4]) = 64;
      LODWORD(CreateOptions) = 0;
      *(_OWORD *)&ObjectAttributes[5] = 0i64;
      BusData = ZwCreateKey(
                  &Handle,
                  0x20019ui64,
                  (_OBJECT_ATTRIBUTES *)&ObjectAttributes[1],
                  0i64,
                  0i64,
                  CreateOptions,
                  &v26);
      if( BusData >= 0 )
      {
        LODWORD(Classa) = 20;
        BusData = ZwQueryValueKey(
                    Handle,
                    &ValueName,
                    KeyValuePartialInformation,
                    &KeyValueInformation,
                    (UINT64)Classa,
                    ObjectAttributes);
        if( BusData >= 0 )
        {
          if( DWORD2(KeyValueInformation) )
          {
            LOBYTE(BusData) = BYTE12(KeyValueInformation);
            byte_140C49D28 = BYTE12(KeyValueInformation);
          }
        }
      }
LABEL_74:
      v16 = Handle;
    }
    if( v16 )
      LOBYTE(BusData) = ZwClose((_HANDLE)v16);
    if( KeyHandle )
      LOBYTE(BusData) = ZwClose((_HANDLE)KeyHandle);
  }
  return BusData;
}

Referenced by: