base_set_assoc.hh (12492:4e76959883a6) base_set_assoc.hh (12548:285f1792a2da)
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

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45 * Declaration of a base set associative tag store.
46 */
47
48#ifndef __MEM_CACHE_TAGS_BASE_SET_ASSOC_HH__
49#define __MEM_CACHE_TAGS_BASE_SET_ASSOC_HH__
50
51#include <cassert>
52#include <cstring>
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

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45 * Declaration of a base set associative tag store.
46 */
47
48#ifndef __MEM_CACHE_TAGS_BASE_SET_ASSOC_HH__
49#define __MEM_CACHE_TAGS_BASE_SET_ASSOC_HH__
50
51#include <cassert>
52#include <cstring>
53#include <list>
53#include <memory>
54#include <vector>
54
55#include "mem/cache/base.hh"
56#include "mem/cache/blk.hh"
57#include "mem/cache/tags/base.hh"
58#include "mem/cache/tags/cacheset.hh"
59#include "mem/packet.hh"
60#include "params/BaseSetAssoc.hh"
61

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82 typedef CacheSet<CacheBlk> SetType;
83
84
85 protected:
86 /** The associativity of the cache. */
87 const unsigned assoc;
88 /** The allocatable associativity of the cache (alloc mask). */
89 unsigned allocAssoc;
55
56#include "mem/cache/base.hh"
57#include "mem/cache/blk.hh"
58#include "mem/cache/tags/base.hh"
59#include "mem/cache/tags/cacheset.hh"
60#include "mem/packet.hh"
61#include "params/BaseSetAssoc.hh"
62

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83 typedef CacheSet<CacheBlk> SetType;
84
85
86 protected:
87 /** The associativity of the cache. */
88 const unsigned assoc;
89 /** The allocatable associativity of the cache (alloc mask). */
90 unsigned allocAssoc;
91
92 /** The cache blocks. */
93 std::vector<BlkType> blks;
94 /** The data blocks, 1 per cache block. */
95 std::unique_ptr<uint8_t[]> dataBlks;
96
90 /** The number of sets in the cache. */
91 const unsigned numSets;
97 /** The number of sets in the cache. */
98 const unsigned numSets;
99
92 /** Whether tags and data are accessed sequentially. */
93 const bool sequentialAccess;
94
95 /** The cache sets. */
100 /** Whether tags and data are accessed sequentially. */
101 const bool sequentialAccess;
102
103 /** The cache sets. */
96 SetType *sets;
104 std::vector<SetType> sets;
97
105
98 /** The cache blocks. */
99 BlkType *blks;
100 /** The data blocks, 1 per cache block. */
101 uint8_t *dataBlks;
102
103 /** The amount to shift the address to get the set. */
104 int setShift;
105 /** The amount to shift the address to get the tag. */
106 int tagShift;
107 /** Mask out all bits that aren't part of the set index. */
108 unsigned setMask;
109
110public:

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115 /**
116 * Construct and initialize this tag store.
117 */
118 BaseSetAssoc(const Params *p);
119
120 /**
121 * Destructor
122 */
106 /** The amount to shift the address to get the set. */
107 int setShift;
108 /** The amount to shift the address to get the tag. */
109 int tagShift;
110 /** Mask out all bits that aren't part of the set index. */
111 unsigned setMask;
112
113public:

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118 /**
119 * Construct and initialize this tag store.
120 */
121 BaseSetAssoc(const Params *p);
122
123 /**
124 * Destructor
125 */
123 virtual ~BaseSetAssoc();
126 virtual ~BaseSetAssoc() {};
124
125 /**
126 * Find the cache block given set and way
127 * @param set The set of the block.
128 * @param way The way of the block.
129 * @return The cache block.
130 */
131 CacheBlk *findBlockBySetAndWay(int set, int way) const override;

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128 /**
129 * Find the cache block given set and way
130 * @param set The set of the block.
131 * @param way The way of the block.
132 * @return The cache block.
133 */
134 CacheBlk *findBlockBySetAndWay(int set, int way) const override;

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