2010-02-23 18:33:09 +01:00
|
|
|
/*
|
|
|
|
* Copyright (c) 2009 The Regents of The University of Michigan
|
|
|
|
* 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.
|
|
|
|
*
|
|
|
|
* Authors: Lisa Hsu
|
|
|
|
*/
|
|
|
|
|
|
|
|
/**
|
|
|
|
* @file
|
|
|
|
* Declaration of an associative set
|
|
|
|
*/
|
|
|
|
|
|
|
|
#ifndef __CACHESET_HH__
|
|
|
|
#define __CACHESET_HH__
|
|
|
|
|
2011-04-15 19:44:06 +02:00
|
|
|
#include <cassert>
|
2010-02-23 18:33:09 +01:00
|
|
|
|
2011-04-15 19:44:06 +02:00
|
|
|
#include "mem/cache/blk.hh" // base class
|
2010-02-23 18:33:09 +01:00
|
|
|
|
|
|
|
/**
|
|
|
|
* An associative set of cache blocks.
|
|
|
|
*/
|
|
|
|
class CacheSet
|
|
|
|
{
|
|
|
|
public:
|
|
|
|
/** The associativity of this set. */
|
|
|
|
int assoc;
|
|
|
|
|
|
|
|
/** Cache blocks in this set, maintained in LRU order 0 = MRU. */
|
|
|
|
CacheBlk **blks;
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Find a block matching the tag in this set.
|
|
|
|
* @param asid The address space ID.
|
|
|
|
* @param tag The Tag to find.
|
|
|
|
* @return Pointer to the block if found.
|
|
|
|
*/
|
|
|
|
CacheBlk* findBlk(Addr tag) const;
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Move the given block to the head of the list.
|
|
|
|
* @param blk The block to move.
|
|
|
|
*/
|
|
|
|
void moveToHead(CacheBlk *blk);
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
#endif
|