1/**
2 * Copyright (c) 2018 Inria
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Daniel Carvalho
29 */
30
31/** @file
32 * Definition of a simple sector block class. Each sector consists of a
33 * sequence of cache blocks that may or may not be present in the cache.
34 */
35
36#ifndef __MEM_CACHE_TAGS_SECTOR_BLK_HH__
37#define __MEM_CACHE_TAGS_SECTOR_BLK_HH__
38
39#include <vector>
40
41#include "mem/cache/cache_blk.hh"
42#include "mem/cache/replacement_policies/replaceable_entry.hh"
43
44class SectorBlk;
45
46/**
47 * A sector is composed of sub-blocks, and each sub-block has information
48 * regarding its sector and a pointer to its sector tag.
49 */
50class SectorSubBlk : public CacheBlk
51{
| 1/**
2 * Copyright (c) 2018 Inria
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Daniel Carvalho
29 */
30
31/** @file
32 * Definition of a simple sector block class. Each sector consists of a
33 * sequence of cache blocks that may or may not be present in the cache.
34 */
35
36#ifndef __MEM_CACHE_TAGS_SECTOR_BLK_HH__
37#define __MEM_CACHE_TAGS_SECTOR_BLK_HH__
38
39#include <vector>
40
41#include "mem/cache/cache_blk.hh"
42#include "mem/cache/replacement_policies/replaceable_entry.hh"
43
44class SectorBlk;
45
46/**
47 * A sector is composed of sub-blocks, and each sub-block has information
48 * regarding its sector and a pointer to its sector tag.
49 */
50class SectorSubBlk : public CacheBlk
51{
|
53 /**
54 * Sector block associated to this block.
55 */
56 SectorBlk* _sectorBlk;
57
58 /**
59 * The offset of this sub-block in the sector.
60 */
61 int _sectorOffset;
62
63 public:
64 SectorSubBlk() : CacheBlk(), _sectorBlk(nullptr), _sectorOffset(0) {}
65 SectorSubBlk(const SectorSubBlk&) = delete;
66 SectorSubBlk& operator=(const SectorSubBlk&) = delete;
67 ~SectorSubBlk() {};
68
69 /**
70 * Set sector block associated to this block.
71 *
72 * @param sector_blk The sector block pointer.
73 */
74 void setSectorBlock(SectorBlk* sector_blk);
75
76 /**
77 * Get sector block associated to this block.
78 *
79 * @return The sector block pointer.
80 */
81 const SectorBlk* getSectorBlock() const;
82
83 /**
84 * Set offset of this sub-block within the sector.
85 *
86 * @param sector_offset The block's offset.
87 */
88 void setSectorOffset(const int sector_offset);
89
90 /**
91 * Get offset of this sub-block within the sector.
92 *
93 * @return sector_offset The block's offset.
94 */
95 int getSectorOffset() const;
96
97 /**
98 * Get tag associated to this block.
99 *
100 * @return The tag value.
101 */
102 Addr getTag() const;
103
104 /**
105 * Set valid bit and inform sector block.
106 */
107 void setValid() override;
108
109 /**
110 * Set secure bit and inform sector block.
111 */
112 void setSecure() override;
113
114 /**
115 * Invalidate the block and inform sector block.
116 */
117 void invalidate() override;
118
119 /**
120 * Set member variables when a block insertion occurs. Resets reference
121 * count to 1 (the insertion counts as a reference), and touch block if
122 * it hadn't been touched previously. Sets the insertion tick to the
123 * current tick. Marks the block valid.
124 *
125 * @param tag Block address tag.
126 * @param is_secure Whether the block is in secure space or not.
127 * @param src_master_ID The source requestor ID.
128 * @param task_ID The new task ID.
129 */
130 void insert(const Addr tag, const bool is_secure, const int src_master_ID,
131 const uint32_t task_ID) override;
132
133 /**
134 * Pretty-print sector offset and other CacheBlk information.
135 *
136 * @return string with basic state information
137 */
138 std::string print() const override;
139};
140
141/**
142 * A Basic Sector block.
143 * Contains the tag and a list of blocks associated to this sector.
144 */
145class SectorBlk : public ReplaceableEntry
146{
| 53 /**
54 * Sector block associated to this block.
55 */
56 SectorBlk* _sectorBlk;
57
58 /**
59 * The offset of this sub-block in the sector.
60 */
61 int _sectorOffset;
62
63 public:
64 SectorSubBlk() : CacheBlk(), _sectorBlk(nullptr), _sectorOffset(0) {}
65 SectorSubBlk(const SectorSubBlk&) = delete;
66 SectorSubBlk& operator=(const SectorSubBlk&) = delete;
67 ~SectorSubBlk() {};
68
69 /**
70 * Set sector block associated to this block.
71 *
72 * @param sector_blk The sector block pointer.
73 */
74 void setSectorBlock(SectorBlk* sector_blk);
75
76 /**
77 * Get sector block associated to this block.
78 *
79 * @return The sector block pointer.
80 */
81 const SectorBlk* getSectorBlock() const;
82
83 /**
84 * Set offset of this sub-block within the sector.
85 *
86 * @param sector_offset The block's offset.
87 */
88 void setSectorOffset(const int sector_offset);
89
90 /**
91 * Get offset of this sub-block within the sector.
92 *
93 * @return sector_offset The block's offset.
94 */
95 int getSectorOffset() const;
96
97 /**
98 * Get tag associated to this block.
99 *
100 * @return The tag value.
101 */
102 Addr getTag() const;
103
104 /**
105 * Set valid bit and inform sector block.
106 */
107 void setValid() override;
108
109 /**
110 * Set secure bit and inform sector block.
111 */
112 void setSecure() override;
113
114 /**
115 * Invalidate the block and inform sector block.
116 */
117 void invalidate() override;
118
119 /**
120 * Set member variables when a block insertion occurs. Resets reference
121 * count to 1 (the insertion counts as a reference), and touch block if
122 * it hadn't been touched previously. Sets the insertion tick to the
123 * current tick. Marks the block valid.
124 *
125 * @param tag Block address tag.
126 * @param is_secure Whether the block is in secure space or not.
127 * @param src_master_ID The source requestor ID.
128 * @param task_ID The new task ID.
129 */
130 void insert(const Addr tag, const bool is_secure, const int src_master_ID,
131 const uint32_t task_ID) override;
132
133 /**
134 * Pretty-print sector offset and other CacheBlk information.
135 *
136 * @return string with basic state information
137 */
138 std::string print() const override;
139};
140
141/**
142 * A Basic Sector block.
143 * Contains the tag and a list of blocks associated to this sector.
144 */
145class SectorBlk : public ReplaceableEntry
146{
|
148 /**
149 * Sector tag value. A sector's tag is the tag of all its sub-blocks.
150 */
151 Addr _tag;
152
153 /**
154 * Counter of the number of valid sub-blocks. The sector is valid if any
155 * of its sub-blocks is valid.
156 */
157 uint8_t _validCounter;
158
159 /**
160 * Whether sector blk is in secure-space or not.
161 */
162 bool _secureBit;
163
164 public:
165 SectorBlk();
166 SectorBlk(const SectorBlk&) = delete;
167 SectorBlk& operator=(const SectorBlk&) = delete;
168 ~SectorBlk() {};
169
170 /** List of blocks associated to this sector. */
171 std::vector<SectorSubBlk*> blks;
172
173 /**
174 * Checks that a sector block is valid.
175 *
176 * @return True if any of the blocks in the sector is valid.
177 */
178 bool isValid() const;
179
180 /**
181 * Checks that a sector block is secure. A single secure block suffices
182 * to imply that the whole sector is secure, as the insertion proccess
183 * asserts that different secure spaces can't coexist in the same sector.
184 *
185 * @return True if any of the blocks in the sector is secure.
186 */
187 bool isSecure() const;
188
189 /**
190 * Set tag associated to this block.
191 *
192 * @param The tag value.
193 */
194 void setTag(const Addr tag);
195
196 /**
197 * Get tag associated to this block.
198 *
199 * @return The tag value.
200 */
201 Addr getTag() const;
202
203 /**
204 * Increase the number of valid sub-blocks.
205 */
206 void validateSubBlk();
207
208 /**
209 * Decrease the number of valid sub-blocks.
210 */
211 void invalidateSubBlk();
212
213 /**
214 * Set secure bit.
215 */
216 void setSecure();
217};
218
219#endif //__MEM_CACHE_TAGS_SECTOR_BLK_HH__
| 148 /**
149 * Sector tag value. A sector's tag is the tag of all its sub-blocks.
150 */
151 Addr _tag;
152
153 /**
154 * Counter of the number of valid sub-blocks. The sector is valid if any
155 * of its sub-blocks is valid.
156 */
157 uint8_t _validCounter;
158
159 /**
160 * Whether sector blk is in secure-space or not.
161 */
162 bool _secureBit;
163
164 public:
165 SectorBlk();
166 SectorBlk(const SectorBlk&) = delete;
167 SectorBlk& operator=(const SectorBlk&) = delete;
168 ~SectorBlk() {};
169
170 /** List of blocks associated to this sector. */
171 std::vector<SectorSubBlk*> blks;
172
173 /**
174 * Checks that a sector block is valid.
175 *
176 * @return True if any of the blocks in the sector is valid.
177 */
178 bool isValid() const;
179
180 /**
181 * Checks that a sector block is secure. A single secure block suffices
182 * to imply that the whole sector is secure, as the insertion proccess
183 * asserts that different secure spaces can't coexist in the same sector.
184 *
185 * @return True if any of the blocks in the sector is secure.
186 */
187 bool isSecure() const;
188
189 /**
190 * Set tag associated to this block.
191 *
192 * @param The tag value.
193 */
194 void setTag(const Addr tag);
195
196 /**
197 * Get tag associated to this block.
198 *
199 * @return The tag value.
200 */
201 Addr getTag() const;
202
203 /**
204 * Increase the number of valid sub-blocks.
205 */
206 void validateSubBlk();
207
208 /**
209 * Decrease the number of valid sub-blocks.
210 */
211 void invalidateSubBlk();
212
213 /**
214 * Set secure bit.
215 */
216 void setSecure();
217};
218
219#endif //__MEM_CACHE_TAGS_SECTOR_BLK_HH__
|