
/*
 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * $Id$
 */

#ifndef COMPONENTMAPPINGFNS_H
#define COMPONENTMAPPINGFNS_H

#include "mem/ruby/common/Global.hh"
#include "mem/ruby/system/NodeID.hh"
#include "mem/ruby/system/MachineID.hh"
#include "mem/ruby/common/Address.hh"
#include "mem/ruby/common/Set.hh"
#include "mem/ruby/common/NetDest.hh"
#include "mem/protocol/GenericMachineType.hh"
#include "mem/ruby/system/DirectoryMemory.hh"

#ifdef MACHINETYPE_L1Cache
#define MACHINETYPE_L1CACHE_ENUM MachineType_L1Cache
#else
#define MACHINETYPE_L1CACHE_ENUM MachineType_NUM
#endif

#ifdef MACHINETYPE_L2Cache
#define MACHINETYPE_L2CACHE_ENUM MachineType_L2Cache
#else
#define MACHINETYPE_L2CACHE_ENUM MachineType_NUM
#endif

#ifdef MACHINETYPE_L3Cache
#define MACHINETYPE_L3CACHE_ENUM MachineType_L3Cache
#else
#define MACHINETYPE_L3CACHE_ENUM MachineType_NUM
#endif

// used to determine the home directory
// returns a value between 0 and total_directories_within_the_system
inline
NodeID map_Address_to_DirectoryNode(const Address& addr)
{
  return DirectoryMemory::mapAddressToDirectoryVersion(addr);
}

// used to determine the home directory
// returns a value between 0 and total_directories_within_the_system
inline
MachineID map_Address_to_Directory(const Address &addr)
{
  MachineID mach = {MachineType_Directory, map_Address_to_DirectoryNode(addr)};
  return mach;
}

inline
MachineID map_Address_to_DMA(const Address & addr)
{
  MachineID dma = {MachineType_DMA, 0};
  return dma;
}

inline 
NetDest broadcast(MachineType type)
{
  NetDest dest;
  for (int i=0; i<MachineType_base_count(type); i++) {
    MachineID mach = {type, i};
    dest.add(mach);
  }
  return dest;
}

inline
MachineID mapAddressToRange(const Address & addr, MachineType type, int low_bit, int num_bits)
{
  MachineID mach = {type, 0};
  if (num_bits == 0)
    return mach;
  mach.num = addr.bitSelect(low_bit, low_bit+num_bits-1);
  return mach;
}

extern inline NodeID machineIDToNodeID(MachineID machID)
{
  return machID.num;
}

extern inline MachineType machineIDToMachineType(MachineID machID)
{
  return machID.type;
}

extern inline NodeID L1CacheMachIDToProcessorNum(MachineID machID)
{
  assert(machID.type == MachineType_L1Cache);
  return machID.num;
}

extern inline MachineID getL1MachineID(NodeID L1RubyNode)
{
  MachineID mach = {MACHINETYPE_L1CACHE_ENUM, L1RubyNode};
  return mach;
}

extern inline GenericMachineType ConvertMachToGenericMach(MachineType machType) {
  if (machType == MACHINETYPE_L1CACHE_ENUM) {
    return GenericMachineType_L1Cache;
  } else if (machType == MACHINETYPE_L2CACHE_ENUM) {
    return GenericMachineType_L2Cache;
  } else if (machType == MACHINETYPE_L3CACHE_ENUM) {
    return GenericMachineType_L3Cache;
  } else if (machType == MachineType_Directory) {
    return GenericMachineType_Directory;
  } else {
    ERROR_MSG("cannot convert to a GenericMachineType");
    return GenericMachineType_NULL;
  }
}


#endif  // COMPONENTMAPPINGFNS_H