HalpInterruptRemap

NTSTATUS __stdcall HalpInterruptRemap(
        INT64 BusNumber,
        UINT64 SlotNumber,
        _PCI_BUSMASTER_DESCRIPTOR *BusMasterDescriptor,
        UINT8 PhantomBits,
        _INTERRUPT_VECTOR_DATA *VectorData,
        UINT64 VectorCount){
  _INTERRUPT_VECTOR_DATA *v6; 
  unsigned __int8 Irql; 
  _INTERRUPT_REMAPPING_INFO *p_IntRemapInfo; 
  _GROUP_AFFINITY *p_TargetProcessors; 
  unsigned __int64 v10; 
  char *v11; 
  unsigned int v12; 
  unsigned int v13; 
  NTSTATUS BestRouting; 
  INTERRUPT_CONNECTION_TYPE Type; 
  NTSTATUS v16; 
  unsigned int v17; 
  _INTERRUPT_REMAPPING_INFO *v18; 
  INT64 v19; 
  NTSTATUS v20; 
  UINT64 Gsiv; 
  __int64 v22; 
  _REGISTERED_INTERRUPT_CONTROLLER *v23; 
  INT64 v24; 
  NTSTATUS v25; 
  int v26; 
  UINT64 v28; 
  UINT64 IrtIndex; 
  INT64 v30; 
  _GROUP_AFFINITY *v31; 
  _INTERRUPT_REMAPPING_INFO *v32; 
  _INTERRUPT_LINE_STATE v33[2]; 
  _PCI_BUSMASTER_DESCRIPTOR *v34; 
  CHAR v35; 

  v35 = PhantomBits;
  v34 = BusMasterDescriptor;
  v6 = VectorData;
  HIDWORD(v30) = 0;
  memset(v33, 0, 32);
  LODWORD(IrtIndex) = -1;
  Irql = VectorData->Irql;
  p_IntRemapInfo = &VectorData->IntRemapInfo;
  p_TargetProcessors = &VectorData->TargetProcessors;
  v10 = (unsigned __int64)LOBYTE(VectorData->Vector) >> 4;
  v11 = (char *)&CmpDummyThreadEvent + 7040;
  v33[0].Routing.UnitId = -1;
  v12 = -1;
  v32 = &VectorData->IntRemapInfo;
  v13 = VectorCount;
  BestRouting = -1073741823;
  *((_BYTE *)&CmpDummyThreadEvent + v10 + 7040) = Irql;
  *(_QWORD *)&v33[0].Vector = 0i64;
  v33[0].Polarity = v6->Polarity;
  v33[0].TriggerMode = v6->Mode;
  v33[0].Vector = v6->Vector;
  Type = v6->Type;
  LODWORD(v30) = 1;
  v31 = p_TargetProcessors;
  v33[0].Flags = 16;
  v33[0].Routing.Line = 1;
  v33[0].ProcessorTarget.8 = 0i64;
  if( Type == InterruptTypeControllerInput )
  {
    Gsiv = v6->ControllerInput.Gsiv;
    VectorData = 0i64;
    if( HalpInterruptGsiToLine(Gsiv, (_INTERRUPT_LINE *)&VectorData) >= 0 )
    {
      HalpInterruptApplyOverrides((_INTERRUPT_LINE *)&VectorData, &v33[0].Polarity, &v33[0].TriggerMode);
      if( v33[0].Polarity == InterruptActiveBoth )
      {
        v33[0].TriggerMode = LevelSensitive;
        v33[0].EmulateActiveBoth = 1;
        v33[0].Polarity = InterruptActiveLow;
      }
      else if( v33[0].Polarity == InterruptActiveBothTriggerHigh )
      {
        v33[0].TriggerMode = LevelSensitive;
        v33[0].EmulateActiveBoth = 1;
        v33[0].Polarity = InterruptActiveHigh;
      }
      else
      {
        v33[0].EmulateActiveBoth = 0;
      }
      v23 = HalpInterruptLookupController((unsigned int)VectorData);
      if( v23 )
      {
        BestRouting = HalpInterruptDestinationToTarget(v22, (__int64)&v30, (__int64)&v33[0].ProcessorTarget);
        if( BestRouting < 0 )
        {
LABEL_10:
          *(&CmpDummyThreadEvent + 1789) = 19;
          goto LABEL_42;
        }
        BestRouting = HalpInterruptFindBestRouting((_INTERRUPT_LINE *)&VectorData, v33[0].Routing, &v33[0].Routing);
        if( BestRouting < 0 )
          return BestRouting;
        HalpInterruptRemapUpdateDeliveryMode((INT64)v6, (INT64)v33);
        if( (*(_DWORD *)(Controller + 220) & 0x100) != 0 && HalpInterruptModel() == 1 )
        {
          if( (p_IntRemapInfo->_bf_0 & 0x40000000) == 0 )
          {
            v25 = HalpIrtAllocateIndex(&IrtIndex, 1i64);
            v12 = IrtIndex;
            BestRouting = v25;
            if( v25 < 0 )
              goto LABEL_7;
            p_IntRemapInfo->_bf_0 ^= (IrtIndex ^ p_IntRemapInfo->_bf_0) & 0x3FFFFFFF;
          }
          HalpIommuUpdateRemappingTableEntry(0, p_IntRemapInfo->_bf_0 & 0x3FFFFFFF, (INT64)v33);
          v26 = p_IntRemapInfo->_bf_0 & 0x3FFFFFFF;
          v33[0].ProcessorTarget.Target = InterruptTargetRemapIndex;
          v33[0].ProcessorTarget.PhysicalTarget = v26;
          p_TargetProcessors = &v6->TargetProcessors;
        }
        if( qword_140C4A168 )
        {
          BestRouting = HalpHvMapDeviceInterrupt(v23->UnitId, v24, (INT64)v33, (INT64)p_TargetProcessors);
          if( BestRouting < 0 )
            goto LABEL_7;
        }
        v33[0].Flags &= ~0x10u;
        v20 = HalpInterruptSetRemappedLineStateInternal(v23, (_INTERRUPT_LINE *)&VectorData, v33);
        goto LABEL_40;
      }
      *(&CmpDummyThreadEvent + 1789) = 17;
    }
    else
    {
      *(&CmpDummyThreadEvent + 1789) = 18;
    }
    return -1073741811;
  }
  if( Type != InterruptTypeMessageRequest )
  {
    *(&CmpDummyThreadEvent + 1789) = 19;
    return BestRouting;
  }
  if( (*(_DWORD *)(Controller + 220) & 0x100) != 0 )
  {
    if( (p_IntRemapInfo->_bf_0 & 0x40000000) != 0 )
    {
      v12 = p_IntRemapInfo->_bf_0 & 0x3FFFFFFF;
    }
    else
    {
      v16 = HalpIrtAllocateIndex(&IrtIndex, v13);
      v12 = IrtIndex;
      BestRouting = v16;
      if( v16 < 0 )
      {
LABEL_7:
        *(&CmpDummyThreadEvent + 1789) = 31;
        goto LABEL_42;
      }
    }
    BestRouting = HalpInterruptDestinationToTarget((__int64)v11, (__int64)&v30, (__int64)&v33[0].ProcessorTarget);
    if( BestRouting < 0 )
      goto LABEL_10;
    HalpInterruptRemapUpdateDeliveryMode((INT64)v6, (INT64)v33);
    v17 = 0;
    if( v13 )
    {
      v18 = p_IntRemapInfo;
      do
      {
        v18->_bf_0 ^= (v18->_bf_0 ^ (v17 + v12)) & 0x3FFFFFFF;
        v19 = v18->_bf_0 & 0x3FFFFFFF;
        v33[0].Vector = *(_DWORD *)&v18[-3].u.MessageData;
        HalpIommuUpdateRemappingTableEntry(1, v19, (INT64)v33);
        ++v17;
        v18 = (_INTERRUPT_REMAPPING_INFO *)((char *)v18 + 88);
      }
      while( v17 < v13 );
    }
    BusMasterDescriptor = v34;
    PhantomBits = v35;
  }
  if( qword_140C4A168 )
  {
    LODWORD(v28) = v13;
    BestRouting = HalpHvMapDeviceMsiRange(
                    (INT64)v11,
                    SlotNumber,
                    (INT64 *)BusMasterDescriptor,
                    PhantomBits,
                    (INT64)v6,
                    v28);
    if( BestRouting < 0 )
      goto LABEL_7;
    goto LABEL_41;
  }
  v20 = HalpPopulateMsiMessages((INT64)&v30, (INT64)v6, v13);
LABEL_40:
  BestRouting = v20;
  if( v20 >= 0 )
  {
LABEL_41:
    BestRouting = 0;
LABEL_42:
    if( BestRouting >= 0 )
      return BestRouting;
  }
  if( v12 != -1 && (p_IntRemapInfo->_bf_0 & 0x40000000) == 0 )
    HalpIrtFreeIndex(v12, v13);
  return BestRouting;
}

Referenced by: