IoMapTransferInternal

__int64 __fastcall IoMapTransferInternal(
        __int64 a1,
        __int64 a2,
        __int64 a3,
        __int64 a4,
        unsigned int *a5,
        char a6,
        char a7){
  unsigned int v10; 
  __int64 *v11; 
  unsigned int v12; 
  __int64 v13; 
  unsigned int v14; 
  __int64 v15; 
  _QWORD *v17; 
  __int64 v18; 
  __int64 v19; 
  if( a3 )
  {
    if( (unsigned int)HalpDmaGetAdapterVersion(a1) == 2 )
      return HalpMapTransferV2(v19, a2, v17, v18, a5, a6);
    else
      return HalpMapTransferV3(v19, a2, (__int64)v17, v18, a5, a6, a7);
  }
  else
  {
    v10 = 4096 - (a4 & 0xFFF);
    v11 = (__int64 *)(a2 + 8 * (((unsigned __int64)(a4 - *(_QWORD *)(a2 + 32)) >> 12) + 6));
    v12 = *a5;
    v13 = *v11;
    v14 = *a5;
    v15 = (a4 & 0xFFF) + (*v11 << 12);
    if( v10 < *a5 )
    {
      do
      {
        if( v13 + 1 != *++v11 )
          break;
        v13 ^= *v11;
        if( (v13 & 0xFFFFFFFFFFF00000ui64) != 0 )
          break;
        v10 += 4096;
        v13 = *v11;
      }
      while( v10 < v12 );
      if( v10 < v12 )
      {
        *a5 = v10;
        v14 = v10;
      }
    }
    if( !*(_BYTE *)(a1 + 437) )
      HalpDmaFlushBuffer(v13, a2, a4, v14, a6, a7);
    return v15;
  }
}

Referenced by: