diff options
Diffstat (limited to 'src/mem')
| -rw-r--r-- | src/mem/cache/tags/base_set_assoc.cc | 2 | ||||
| -rw-r--r-- | src/mem/cache/tags/base_set_assoc.hh | 8 | ||||
| -rw-r--r-- | src/mem/cache/tags/cacheset.hh | 164 |
3 files changed, 3 insertions, 171 deletions
diff --git a/src/mem/cache/tags/base_set_assoc.cc b/src/mem/cache/tags/base_set_assoc.cc index 1a04c08a9..74fb247a6 100644 --- a/src/mem/cache/tags/base_set_assoc.cc +++ b/src/mem/cache/tags/base_set_assoc.cc @@ -71,7 +71,7 @@ BaseSetAssoc::init(BaseCache* cache) // Initialize all blocks for (unsigned blk_index = 0; blk_index < numBlocks; blk_index++) { // Locate next cache block - BlkType* blk = &blks[blk_index]; + CacheBlk* blk = &blks[blk_index]; // Link block to indexing policy indexingPolicy->setEntry(blk, blk_index); diff --git a/src/mem/cache/tags/base_set_assoc.hh b/src/mem/cache/tags/base_set_assoc.hh index e06417224..01bfa05b2 100644 --- a/src/mem/cache/tags/base_set_assoc.hh +++ b/src/mem/cache/tags/base_set_assoc.hh @@ -71,16 +71,12 @@ */ class BaseSetAssoc : public BaseTags { - public: - /** Typedef the block type used in this tag store. */ - typedef CacheBlk BlkType; - protected: /** The allocatable associativity of the cache (alloc mask). */ unsigned allocAssoc; /** The cache blocks. */ - std::vector<BlkType> blks; + std::vector<CacheBlk> blks; /** Whether tags and data are accessed sequentially. */ const bool sequentialAccess; @@ -129,7 +125,7 @@ class BaseSetAssoc : public BaseTags */ CacheBlk* accessBlock(Addr addr, bool is_secure, Cycles &lat) override { - BlkType *blk = findBlock(addr, is_secure); + CacheBlk *blk = findBlock(addr, is_secure); // Access all tags in parallel, hence one in each way. The data side // either accesses all blocks in parallel, or one block sequentially on diff --git a/src/mem/cache/tags/cacheset.hh b/src/mem/cache/tags/cacheset.hh deleted file mode 100644 index 2675d45ee..000000000 --- a/src/mem/cache/tags/cacheset.hh +++ /dev/null @@ -1,164 +0,0 @@ -/* - * Copyright (c) 2013 ARM Limited - * All rights reserved. - * - * The license below extends only to copyright in the software and shall - * not be construed as granting a license to any other intellectual - * property including but not limited to intellectual property relating - * to a hardware implementation of the functionality of the software - * licensed hereunder. You may use the software subject to the license - * terms below provided that you ensure that this notice is replicated - * unmodified and in its entirety in all distributions of the software, - * modified or unmodified, in source code or in binary form. - * - * 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 __MEM_CACHE_TAGS_CACHESET_HH__ -#define __MEM_CACHE_TAGS_CACHESET_HH__ - -#include <cassert> -#include <vector> - -#include "base/types.hh" - -/** - * An associative set of cache blocks. - */ -template <class Blktype> -class CacheSet -{ - public: - /** The associativity of this set. */ - int assoc; - - /** Cache blocks in this set, maintained in LRU order 0 = MRU. */ - std::vector<Blktype*> blks; - - /** - * Find a block matching the tag in this set. - * @param way_id The id of the way that matches the tag. - * @param tag The Tag to find. - * @param is_secure True if the target memory space is secure. - * @return Pointer to the block if found. Set way_id to assoc if none found - */ - Blktype* findBlk(Addr tag, bool is_secure, int& way_id) const ; - Blktype* findBlk(Addr tag, bool is_secure) const ; - - /** - * Move the given block to the head of the list. - * @param blk The block to move. - */ - void moveToHead(Blktype *blk); - - /** - * Move the given block to the tail of the list. - * @param blk The block to move - */ - void moveToTail(Blktype *blk); - -}; - -template <class Blktype> -Blktype* -CacheSet<Blktype>::findBlk(Addr tag, bool is_secure, int& way_id) const -{ - /** - * Way_id returns the id of the way that matches the block - * If no block is found way_id is set to assoc. - */ - way_id = assoc; - for (int i = 0; i < assoc; ++i) { - if (blks[i]->tag == tag && blks[i]->isValid() && - blks[i]->isSecure() == is_secure) { - way_id = i; - return blks[i]; - } - } - return nullptr; -} - -template <class Blktype> -Blktype* -CacheSet<Blktype>::findBlk(Addr tag, bool is_secure) const -{ - int ignored_way_id; - return findBlk(tag, is_secure, ignored_way_id); -} - -template <class Blktype> -void -CacheSet<Blktype>::moveToHead(Blktype *blk) -{ - // nothing to do if blk is already head - if (blks[0] == blk) - return; - - // write 'next' block into blks[i], moving up from MRU toward LRU - // until we overwrite the block we moved to head. - - // start by setting up to write 'blk' into blks[0] - int i = 0; - Blktype *next = blk; - - do { - assert(i < assoc); - std::swap(blks[i], next); - ++i; - } while (next != blk); -} - -template <class Blktype> -void -CacheSet<Blktype>::moveToTail(Blktype *blk) -{ - // nothing to do if blk is already tail - if (blks[assoc - 1] == blk) - return; - - // write 'next' block into blks[i], moving from LRU to MRU - // until we overwrite the block we moved to tail. - - // start by setting up to write 'blk' into tail - int i = assoc - 1; - Blktype *next = blk; - - do { - assert(i >= 0); - std::swap(blks[i], next); - --i; - } while (next != blk); -} - -#endif |