1/* 2 * Copyright (c) 2012-2014 ARM Limited 3 * All rights reserved. 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software --- 28 unchanged lines hidden (view full) --- 37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 39 * 40 * Authors: Erik Hallnor 41 */ 42 43/** 44 * @file |
45 * Definitions of a conventional tag store. |
46 */ 47 48#include "mem/cache/tags/base_set_assoc.hh" 49 50#include <string> 51 52#include "base/intmath.hh" 53 54BaseSetAssoc::BaseSetAssoc(const Params *p) |
55 :BaseTags(p), allocAssoc(p->assoc), blks(p->size / p->block_size), |
56 sequentialAccess(p->sequential_access), |
57 replacementPolicy(p->replacement_policy) 58{ 59 // Check parameters 60 if (blkSize < 4 || !isPowerOf2(blkSize)) { 61 fatal("Block size must be at least 4 and a power of 2"); 62 } |
63} 64 65void 66BaseSetAssoc::init(BaseCache* cache) 67{ 68 // Set parent cache 69 setCache(cache); 70 |
71 // Initialize all blocks 72 for (unsigned blk_index = 0; blk_index < numBlocks; blk_index++) { 73 // Locate next cache block 74 BlkType* blk = &blks[blk_index]; |
75 |
76 // Link block to indexing policy 77 indexingPolicy->setEntry(blk, blk_index); |
78 |
79 // Associate a data chunk to the block 80 blk->data = &dataBlks[blkSize*blk_index]; |
81 |
82 // Associate a replacement data entry to the block 83 blk->replacementData = replacementPolicy->instantiateEntry(); |
84 } 85} 86 87void 88BaseSetAssoc::invalidate(CacheBlk *blk) 89{ 90 BaseTags::invalidate(blk); 91 92 // Decrease the number of tags in use 93 tagsInUse--; 94 95 // Invalidate replacement data 96 replacementPolicy->invalidate(blk->replacementData); 97} 98 |
99BaseSetAssoc * 100BaseSetAssocParams::create() 101{ |
102 // There must be a indexing policy 103 fatal_if(!indexing_policy, "An indexing policy is required"); 104 |
105 return new BaseSetAssoc(this); 106} |