base.hh (13418:08101e89101e) base.hh (13419:aaadcfae091a)
1/*
2 * Copyright (c) 2012-2014,2016-2018 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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56#include "base/callback.hh"
57#include "base/logging.hh"
58#include "base/statistics.hh"
59#include "base/types.hh"
60#include "mem/cache/cache_blk.hh"
61#include "params/BaseTags.hh"
62#include "sim/clocked_object.hh"
63
1/*
2 * Copyright (c) 2012-2014,2016-2018 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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56#include "base/callback.hh"
57#include "base/logging.hh"
58#include "base/statistics.hh"
59#include "base/types.hh"
60#include "mem/cache/cache_blk.hh"
61#include "params/BaseTags.hh"
62#include "sim/clocked_object.hh"
63
64class BaseCache;
64class System;
65class IndexingPolicy;
66class ReplaceableEntry;
67
68/**
69 * A common base class of Cache tagstore objects.
70 */
71class BaseTags : public ClockedObject
72{
73 protected:
74 /** The block size of the cache. */
75 const unsigned blkSize;
76 /** Mask out all bits that aren't part of the block offset. */
77 const Addr blkMask;
78 /** The size of the cache. */
79 const unsigned size;
80 /** The tag lookup latency of the cache. */
81 const Cycles lookupLatency;
82
65class IndexingPolicy;
66class ReplaceableEntry;
67
68/**
69 * A common base class of Cache tagstore objects.
70 */
71class BaseTags : public ClockedObject
72{
73 protected:
74 /** The block size of the cache. */
75 const unsigned blkSize;
76 /** Mask out all bits that aren't part of the block offset. */
77 const Addr blkMask;
78 /** The size of the cache. */
79 const unsigned size;
80 /** The tag lookup latency of the cache. */
81 const Cycles lookupLatency;
82
83 /** Pointer to the parent cache. */
84 BaseCache *cache;
83 /** System we are currently operating in. */
84 System *system;
85
86 /** Indexing policy */
87 BaseIndexingPolicy *indexingPolicy;
88
89 /**
90 * The number of tags that need to be touched to meet the warmup
91 * percentage.
92 */

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148 Stats::Scalar tagAccesses;
149 /** Number of data blocks consulted over all accesses. */
150 Stats::Scalar dataAccesses;
151
152 /**
153 * @}
154 */
155
85
86 /** Indexing policy */
87 BaseIndexingPolicy *indexingPolicy;
88
89 /**
90 * The number of tags that need to be touched to meet the warmup
91 * percentage.
92 */

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148 Stats::Scalar tagAccesses;
149 /** Number of data blocks consulted over all accesses. */
150 Stats::Scalar dataAccesses;
151
152 /**
153 * @}
154 */
155
156 /**
157 * Set the parent cache back pointer.
158 *
159 * @param _cache Pointer to parent cache.
160 */
161 void setCache(BaseCache *_cache);
162
163 public:
164 typedef BaseTagsParams Params;
165 BaseTags(const Params *p);
166
167 /**
168 * Destructor.
169 */
170 virtual ~BaseTags() {}
171
172 /**
156 public:
157 typedef BaseTagsParams Params;
158 BaseTags(const Params *p);
159
160 /**
161 * Destructor.
162 */
163 virtual ~BaseTags() {}
164
165 /**
173 * Initialize blocks and set the parent cache back pointer.
174 *
175 * @param _cache Pointer to parent cache.
166 * Initialize blocks. Must be overriden by every subclass that uses
167 * a block type different from its parent's, as the current Python
168 * code generation does not allow templates.
176 */
169 */
177 virtual void tagsInit(BaseCache *_cache) = 0;
170 virtual void tagsInit() = 0;
178
179 /**
180 * Register local statistics.
181 */
182 void regStats();
183
184 /**
185 * Average in the reference count for valid blocks when the simulation

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172 /**
173 * Register local statistics.
174 */
175 void regStats();
176
177 /**
178 * Average in the reference count for valid blocks when the simulation

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