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author | Lisa Hsu <Lisa.Hsu@amd.com> | 2010-02-23 09:33:09 -0800 |
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committer | Lisa Hsu <Lisa.Hsu@amd.com> | 2010-02-23 09:33:09 -0800 |
commit | 2ad386f104cf84bd8bcb50eef50f04cdbcf9ebf7 (patch) | |
tree | 90efb129fc522f077c2cb11c9e08450b40a31fc6 /src/mem/cache/tags/cacheset.hh | |
parent | a5feaa6a69c28f2ab12e28d47fd4bd62359b07c7 (diff) | |
download | gem5-2ad386f104cf84bd8bcb50eef50f04cdbcf9ebf7.tar.xz |
cache: pull CacheSet out of LRU so that other tags can use associative sets.
Diffstat (limited to 'src/mem/cache/tags/cacheset.hh')
-rw-r--r-- | src/mem/cache/tags/cacheset.hh | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/mem/cache/tags/cacheset.hh b/src/mem/cache/tags/cacheset.hh new file mode 100644 index 000000000..135e993aa --- /dev/null +++ b/src/mem/cache/tags/cacheset.hh @@ -0,0 +1,71 @@ +/* + * 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__ + +#include "mem/cache/blk.hh" // base class +#include <assert.h> + + +/** + * 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 |