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/*
* 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.
*/
/*
* Common base class for a machine node.
*/
#ifndef __MEM_RUBY_SLICC_INTERFACE_ABSTRACTCACHEENTRY_HH__
#define __MEM_RUBY_SLICC_INTERFACE_ABSTRACTCACHEENTRY_HH__
#include <iostream>
#include "base/logging.hh"
#include "mem/protocol/AccessPermission.hh"
#include "mem/ruby/common/Address.hh"
#include "mem/ruby/slicc_interface/AbstractEntry.hh"
class DataBlock;
class AbstractCacheEntry : public AbstractEntry
{
public:
AbstractCacheEntry();
virtual ~AbstractCacheEntry() = 0;
// Get/Set permission of the entry
void changePermission(AccessPermission new_perm);
// The methods below are those called by ruby runtime, add when it
// is absolutely necessary and should all be virtual function.
virtual DataBlock& getDataBlk()
{ panic("getDataBlk() not implemented!"); }
int validBlocks;
virtual int& getNumValidBlocks()
{
return validBlocks;
}
// Functions for locking and unlocking the cache entry. These are required
// for supporting atomic memory accesses.
void setLocked(int context);
void clearLocked();
bool isLocked(int context) const;
void setSetIndex(uint32_t s) { m_set_index = s; }
uint32_t getSetIndex() const { return m_set_index; }
void setWayIndex(uint32_t s) { m_way_index = s; }
uint32_t getWayIndex() const { return m_way_index; }
// Address of this block, required by CacheMemory
Addr m_Address;
// Holds info whether the address is locked.
// Required for implementing LL/SC operations.
int m_locked;
private:
// Set and way coordinates of the entry within the cache memory object.
uint32_t m_set_index;
uint32_t m_way_index;
};
inline std::ostream&
operator<<(std::ostream& out, const AbstractCacheEntry& obj)
{
obj.print(out);
out << std::flush;
return out;
}
#endif // __MEM_RUBY_SLICC_INTERFACE_ABSTRACTCACHEENTRY_HH__
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