VfMapTransfer

_LARGE_INTEGER __stdcall VfMapTransfer(
        _DMA_ADAPTER *DmaAdapter,
        _MDL *Mdl,
        VOID *MapRegisterBase,
        VOID *CurrentVa,
        UINT64 *Length,
        UINT8 WriteToDevice){
  _MDL *v6; 
  VOID *v7; 
  VOID *v8; 
  __int64(__fastcall *RealDmaOperation)(_DMA_ADAPTER *, _MDL *, VOID *, VOID *, UINT64 *, int); 
  INT64 v11; 
  _LIST_ENTRY *AdapterInformationInternal; 
  UINT8 v13; 
  UINT8 v14; 
  _ADAPTER_INFORMATION *v15; 
  UINT64 *v16; 
  ULONG_PTR v17; 
  ULONG_PTR v18; 
  _MAP_REGISTER_FILE *MapRegisterFile; 
  _MAP_REGISTER_FILE *v20; 
  int v21; 
  int v22; 
  _LARGE_INTEGER v23; 
  int Action; 
  UINT64 v26; 
  __int64(__fastcall *v27)(_DMA_ADAPTER *, _MDL *, VOID *, VOID *, UINT64 *, int); 
  _MDL *Mdla; 
  VOID *MapRegisterBasea; 
  VOID *CurrentVaa; 

  CurrentVaa = CurrentVa;
  MapRegisterBasea = MapRegisterBase;
  Mdla = Mdl;
  v6 = Mdl;
  v7 = CurrentVa;
  v8 = MapRegisterBase;
  RealDmaOperation = (__int64(__fastcall *)(_DMA_ADAPTER *, _MDL *, VOID *, VOID *, UINT64 *, int))ViGetRealDmaOperation((ULONG_PTR)DmaAdapter, 0x40ui64);
  LOBYTE(v11) = 1;
  v27 = RealDmaOperation;
  AdapterInformationInternal = ViGetAdapterInformationInternal(DmaAdapter, v11);
  v14 = WriteToDevice;
  v15 = (_ADAPTER_INFORMATION *)AdapterInformationInternal;
  v16 = Length;
  if( AdapterInformationInternal )
  {
    VF_ASSERT_MAX_IRQL(v13);
    VERIFY_BUFFER_LOCKED(v6);
    ViCheckAdapterBuffers((INT64)v15);
    if( v15[48] == 3 )
    {
      v17 = ViCheckMdlLength(v6, 0i64, *(unsigned int *)v16);
      if( v17 )
      {
        v18 = v17;
        ViHalPreprocessOptions(
          &unk_140C12D14,
          (PSTR)"The provided MDL is not sufficient to satisfy the requested length",
          0x24ui64,
          v17,
          0i64,
          0i64,
          v26);
        VfReportIssueWithOptions(0xE6ui64, 0x24u, v18, 0, 0, &unk_140C12D14);
      }
    }
    if( v8 == (VOID *)-559026163i64 )
    {
      v8 = 0i64;
    }
    else
    {
      MapRegisterFile = ViGetMapRegisterFile(v8);
      v20 = MapRegisterFile;
      if( MapRegisterFile )
      {
        v21 = ViMapDoubleBuffer(MapRegisterFile, v6, v7, *(unsigned int *)v16, v14);
        if( v21
          && (*(_DWORD *)v16 = v21, v22 = ViSwap(&MapRegisterBasea, &Mdla, &CurrentVaa), v7 = CurrentVaa, v6 = Mdla, v22) )
        {
          v8 = MapRegisterBasea;
        }
        else
        {
          v8 = (VOID *)*((_QWORD *)v20 + 6);
        }
      }
    }
  }
  LOBYTE(Action) = v14;
  v23.QuadPart = v27(DmaAdapter, v6, v8, v7, v16, Action);
  if( v15 )
    INCREASE_MAPPED_TRANSFER_BYTE_COUNT(v15, *(unsigned int *)v16, 0);
  return v23;
}

Referenced by: