HalpDmaMapScatterTransferV2

void __fastcall HalpDmaMapScatterTransferV2(
        __int64 a1,
        __int64 a2,
        __int64 a3,
        __int64 a4,
        unsigned int *a5,
        char a6,
        __int64 *a7){
  unsigned int ContiguousPiece; 
  unsigned int v12; 
  __int64 v13; 
  __int64 v14; 
  __int64 v15; 
  __int64 v16; 
  __int64 v17; 
  _QWORD *v18; 
  __int64 v19; 
  unsigned __int64 v20; 
  __int64 v21; 
  bool v22; 
  ContiguousPiece = HalpDmaNextContiguousPiece(a1, a2, a3, a4, a6, *a5);
  v12 = ContiguousPiece;
  *a5 = ContiguousPiece;
  v13 = a4 & 0xFFF;
  v14 = (unsigned int)((unsigned __int64)(a4 - *(_QWORD *)(a2 + 32)) >> 12);
  v15 = v13 + (*(_QWORD *)(a2 + 8 * v14 + 48) << 12);
  if( a3
    && ((v16 = ContiguousPiece, *(_QWORD *)(a1 + 136) < (unsigned __int64)ContiguousPiece + v15 - 1)
     || !a6
     && !*(_BYTE *)(a1 + 437)
     && ((v14 = (unsigned int)HalpDmaGetAdapterCacheAlignment(a1) - 1, (v14 & v15) != 0) || (v17 & v14) != 0)) )
  {
    v18 = *(_QWORD **)(a3 + 56);
    *a7 = v13 + *v18;
    if( a6 )
    {
      HalpDmaSyncMapBuffers(a1, a2, a4, v18, v12, a6, 0, 0);
    }
    else if( !*(_BYTE *)(a1 + 437) )
    {
      HalpDmaSyncMapBuffers(a1, a2, a4, v18, v12, 0, 1, 0);
    }
    v19 = *(_QWORD *)(a3 + 56);
    v20 = (unsigned __int64)(v16 + v13 + 4095) >> 12;
    if( (_DWORD)v20 )
    {
      v21 = (unsigned int)v20;
      do
      {
        v19 = *(_QWORD *)(v19 + 8);
        --v21;
      }
      while( v21 );
    }
    *(_QWORD *)(a3 + 56) = v19;
  }
  else
  {
    v22 = *(_BYTE *)(a1 + 437) == 0;
    *a7 = v15;
    if( v22 )
      HalpDmaFlushBuffer(v14, a2, a4, v12, a6, 0);
  }
}

Referenced by: