HalpDmaInitMemory

NTSTATUS __stdcall HalpDmaInitMemory(INT64 a1){
  INT64 v1; 
  INT64 v3; 
  INT64 v4; 
  unsigned int v5; 
  unsigned int v6; 
  unsigned int v7; 
  _LARGE_INTEGER v8; 
  unsigned int i; 
  _LARGE_INTEGER v10; 
  __int64 v11; 
  _LARGE_INTEGER MaxPhysicalAddress; 

  HalpDmaAdapterListLock = 0i64;
  qword_140C4BCA8 = (__int64)&HalpDmaAdapterList;
  HalpDmaAdapterList = (__int64)&HalpDmaAdapterList;
  word_140C49B80 = 1;
  LOBYTE(v1) = 1;
  byte_140C49B82 = 6;
  dword_140C49B84 = 1;
  qword_140C49B90 = (__int64)&qword_140C49B88;
  qword_140C49B88 = &qword_140C49B88;
  MaxPhysicalAddress.QuadPart = 0x1000000i64;
  MasterAdapter.MapBufferPhysicalAddress.QuadPart = HalpAllocPhysicalMemory(
                                                      (_LOADER_PARAMETER_BLOCK *)a1,
                                                      &MaxPhysicalAddress,
                                                      0x10ui64,
                                                      v1);
  LOBYTE(v3) = 1;
  MasterAdapter.MapBufferSize = MasterAdapter.MapBufferPhysicalAddress.QuadPart != 0 ? 0x10000 : 0;
  stru_140C4BA20.MapBufferPhysicalAddress.QuadPart = HalpAllocPhysicalMemory(
                                                       (_LOADER_PARAMETER_BLOCK *)a1,
                                                       &MaxPhysicalAddress,
                                                       0x10ui64,
                                                       v3);
  v5 = 32;
  stru_140C4BA20.MapBufferSize = stru_140C4BA20.MapBufferPhysicalAddress.QuadPart != 0 ? 0x10000 : 0;
  v6 = (unsigned __int64)qword_140C4BA18 < 0x100000000i64 ? 0x10000 : 196608;
  v7 = v6 >> 12;
  do
  {
    LOBYTE(v4) = 1;
    MaxPhysicalAddress.QuadPart = (1i64 << v5) - 1;
    v8.QuadPart = HalpAllocPhysicalMemory((_LOADER_PARAMETER_BLOCK *)a1, &MaxPhysicalAddress, v7, v4);
    if( v8.QuadPart )
      break;
    ++v5;
  }
  while( v5 <= 0x20 );
  stru_140C4B940.MapBufferPhysicalAddress = v8;
  stru_140C4B940.MapBufferSize = v8.QuadPart != 0 ? v6 : 0;
  if( v5 >= 0x40 )
    stru_140C4B940.AdapterObject.MaximumPhysicalAddress.QuadPart = -1i64;
  else
    stru_140C4B940.AdapterObject.MaximumPhysicalAddress.QuadPart = (1i64 << v5) - 1;
  for( i = 32; i <= 0x20; ++i )
  {
    LOBYTE(v4) = 1;
    MaxPhysicalAddress.QuadPart = (1i64 << i) - 1;
    v10.QuadPart = HalpAllocPhysicalMemory((_LOADER_PARAMETER_BLOCK *)a1, &MaxPhysicalAddress, v7, v4);
    if( v10.QuadPart )
      break;
  }
  stru_140C4BB00.MapBufferPhysicalAddress = v10;
  v11 = -v10.QuadPart;
  stru_140C4BB00.MapBufferSize = v11 != 0 ? v6 : 0;
  if( i >= 0x40 )
  {
    stru_140C4BB00.AdapterObject.MaximumPhysicalAddress.QuadPart = -1i64;
  }
  else
  {
    v11 = (1i64 << i) - 1;
    stru_140C4BB00.AdapterObject.MaximumPhysicalAddress.QuadPart = v11;
  }
  return v11;
}

Referenced by: