1/*
2 * Copyright (c) 2012-2014,2017 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

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110 * updates the replacement data.
111 *
112 * @param blk The block to invalidate.
113 */
114 void invalidate(CacheBlk *blk) override;
115
116 /**
117 * Access block and update replacement data. May not succeed, in which case
118 * nullptr is returned. This has all the implications of a cache access and
119 * should only be used as such. Returns the tag lookup latency as a side
120 * effect.
121 *
122 * @param addr The address to find.
123 * @param is_secure True if the target memory space is secure.
124 * @param lat The latency of the tag lookup.
125 * @return Pointer to the cache block if found.
126 */
127 CacheBlk* accessBlock(Addr addr, bool is_secure, Cycles &lat) override
128 {
129 CacheBlk *blk = findBlock(addr, is_secure);
130
131 // Access all tags in parallel, hence one in each way. The data side
132 // either accesses all blocks in parallel, or one block sequentially on
133 // a hit. Sequential access with a miss doesn't access data.
134 tagAccesses += allocAssoc;
135 if (sequentialAccess) {
136 if (blk != nullptr) {
137 dataAccesses += 1;
138 }
139 } else {
140 dataAccesses += allocAssoc;
141 }
142
143 // If a cache hit
144 if (blk != nullptr) {
145 // Update number of references to accessed block
146 blk->refCount++;
147
148 // Update replacement data of accessed block
149 replacementPolicy->touch(blk->replacementData);
150 }
151
152 // The tag lookup latency is the same for a hit or a miss
153 lat = lookupLatency;
154
155 return blk;
156 }
157
158 /**
159 * Find replacement victim based on address. The list of evicted blocks
160 * only contains the victim.
161 *
162 * @param addr Address to find a victim for.

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