1/*
2 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
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
29#include "base/intmath.hh"
30#include "debug/RubyCache.hh"
31#include "debug/RubyStats.hh"
32#include "mem/ruby/slicc_interface/RubySlicc_Util.hh"
33#include "mem/ruby/structures/DirectoryMemory.hh"
34#include "mem/ruby/system/System.hh"
35
36using namespace std;
37
38int DirectoryMemory::m_num_directories = 0;
39int DirectoryMemory::m_num_directories_bits = 0;
40uint64_t DirectoryMemory::m_total_size_bytes = 0;
41int DirectoryMemory::m_numa_high_bit = 0;
42
43DirectoryMemory::DirectoryMemory(const Params *p)
44 : SimObject(p)
45{
46 m_version = p->version;
47 m_size_bytes = p->size;
48 m_size_bits = floorLog2(m_size_bytes);
49 m_num_entries = 0;
50 m_use_map = p->use_map;
51 m_map_levels = p->map_levels;
52 m_numa_high_bit = p->numa_high_bit;
53}
54
55void
56DirectoryMemory::init()
57{
58 m_num_entries = m_size_bytes / RubySystem::getBlockSizeBytes();
59
60 if (m_use_map) {
61 m_sparseMemory = new SparseMemory(m_map_levels);
62 g_system_ptr->registerSparseMemory(m_sparseMemory);
63 } else {
64 m_entries = new AbstractEntry*[m_num_entries];
65 for (int i = 0; i < m_num_entries; i++)
66 m_entries[i] = NULL;
67 m_ram = g_system_ptr->getMemoryVector();
68 }
69
70 m_num_directories++;
71 m_num_directories_bits = ceilLog2(m_num_directories);
72 m_total_size_bytes += m_size_bytes;
73
74 if (m_numa_high_bit == 0) {
75 m_numa_high_bit = RubySystem::getMemorySizeBits() - 1;
76 }
77 assert(m_numa_high_bit != 0);
78}
79
80DirectoryMemory::~DirectoryMemory()
81{
82 // free up all the directory entries
83 if (m_entries != NULL) {
84 for (uint64 i = 0; i < m_num_entries; i++) {
85 if (m_entries[i] != NULL) {
86 delete m_entries[i];
87 }
88 }
89 delete [] m_entries;
90 } else if (m_use_map) {
91 delete m_sparseMemory;
92 }
93}
94
95uint64
96DirectoryMemory::mapAddressToDirectoryVersion(PhysAddress address)
97{
98 if (m_num_directories_bits == 0)
99 return 0;
100
101 uint64 ret = address.bitSelect(m_numa_high_bit - m_num_directories_bits + 1,
102 m_numa_high_bit);
103 return ret;
104}
105
106bool
107DirectoryMemory::isPresent(PhysAddress address)
108{
109 bool ret = (mapAddressToDirectoryVersion(address) == m_version);
110 return ret;
111}
112
113uint64
114DirectoryMemory::mapAddressToLocalIdx(PhysAddress address)
115{
116 uint64 ret;
117 if (m_num_directories_bits > 0) {
118 ret = address.bitRemove(m_numa_high_bit - m_num_directories_bits + 1,
119 m_numa_high_bit);
120 } else {
121 ret = address.getAddress();
122 }
123
124 return ret >> (RubySystem::getBlockSizeBits());
125}
126
127AbstractEntry*
128DirectoryMemory::lookup(PhysAddress address)
129{
130 assert(isPresent(address));
131 DPRINTF(RubyCache, "Looking up address: %s\n", address);
132
133 if (m_use_map) {
134 return m_sparseMemory->lookup(address);
135 } else {
136 uint64_t idx = mapAddressToLocalIdx(address);
137 assert(idx < m_num_entries);
138 return m_entries[idx];
139 }
140}
141
142AbstractEntry*
143DirectoryMemory::allocate(const PhysAddress& address, AbstractEntry* entry)
144{
145 assert(isPresent(address));
146 uint64 idx;
147 DPRINTF(RubyCache, "Looking up address: %s\n", address);
148
149 if (m_use_map) {
150 m_sparseMemory->add(address, entry);
151 entry->changePermission(AccessPermission_Read_Write);
152 } else {
153 idx = mapAddressToLocalIdx(address);
154 assert(idx < m_num_entries);
155 entry->getDataBlk().assign(m_ram->getBlockPtr(address));
156 entry->changePermission(AccessPermission_Read_Only);
157 m_entries[idx] = entry;
158 }
159
160 return entry;
161}
162
163void
164DirectoryMemory::invalidateBlock(PhysAddress address)
165{
166 if (m_use_map) {
167 assert(m_sparseMemory->exist(address));
168 m_sparseMemory->remove(address);
169 }
170#if 0
171 else {
172 assert(isPresent(address));
173
| 1/*
2 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
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
29#include "base/intmath.hh"
30#include "debug/RubyCache.hh"
31#include "debug/RubyStats.hh"
32#include "mem/ruby/slicc_interface/RubySlicc_Util.hh"
33#include "mem/ruby/structures/DirectoryMemory.hh"
34#include "mem/ruby/system/System.hh"
35
36using namespace std;
37
38int DirectoryMemory::m_num_directories = 0;
39int DirectoryMemory::m_num_directories_bits = 0;
40uint64_t DirectoryMemory::m_total_size_bytes = 0;
41int DirectoryMemory::m_numa_high_bit = 0;
42
43DirectoryMemory::DirectoryMemory(const Params *p)
44 : SimObject(p)
45{
46 m_version = p->version;
47 m_size_bytes = p->size;
48 m_size_bits = floorLog2(m_size_bytes);
49 m_num_entries = 0;
50 m_use_map = p->use_map;
51 m_map_levels = p->map_levels;
52 m_numa_high_bit = p->numa_high_bit;
53}
54
55void
56DirectoryMemory::init()
57{
58 m_num_entries = m_size_bytes / RubySystem::getBlockSizeBytes();
59
60 if (m_use_map) {
61 m_sparseMemory = new SparseMemory(m_map_levels);
62 g_system_ptr->registerSparseMemory(m_sparseMemory);
63 } else {
64 m_entries = new AbstractEntry*[m_num_entries];
65 for (int i = 0; i < m_num_entries; i++)
66 m_entries[i] = NULL;
67 m_ram = g_system_ptr->getMemoryVector();
68 }
69
70 m_num_directories++;
71 m_num_directories_bits = ceilLog2(m_num_directories);
72 m_total_size_bytes += m_size_bytes;
73
74 if (m_numa_high_bit == 0) {
75 m_numa_high_bit = RubySystem::getMemorySizeBits() - 1;
76 }
77 assert(m_numa_high_bit != 0);
78}
79
80DirectoryMemory::~DirectoryMemory()
81{
82 // free up all the directory entries
83 if (m_entries != NULL) {
84 for (uint64 i = 0; i < m_num_entries; i++) {
85 if (m_entries[i] != NULL) {
86 delete m_entries[i];
87 }
88 }
89 delete [] m_entries;
90 } else if (m_use_map) {
91 delete m_sparseMemory;
92 }
93}
94
95uint64
96DirectoryMemory::mapAddressToDirectoryVersion(PhysAddress address)
97{
98 if (m_num_directories_bits == 0)
99 return 0;
100
101 uint64 ret = address.bitSelect(m_numa_high_bit - m_num_directories_bits + 1,
102 m_numa_high_bit);
103 return ret;
104}
105
106bool
107DirectoryMemory::isPresent(PhysAddress address)
108{
109 bool ret = (mapAddressToDirectoryVersion(address) == m_version);
110 return ret;
111}
112
113uint64
114DirectoryMemory::mapAddressToLocalIdx(PhysAddress address)
115{
116 uint64 ret;
117 if (m_num_directories_bits > 0) {
118 ret = address.bitRemove(m_numa_high_bit - m_num_directories_bits + 1,
119 m_numa_high_bit);
120 } else {
121 ret = address.getAddress();
122 }
123
124 return ret >> (RubySystem::getBlockSizeBits());
125}
126
127AbstractEntry*
128DirectoryMemory::lookup(PhysAddress address)
129{
130 assert(isPresent(address));
131 DPRINTF(RubyCache, "Looking up address: %s\n", address);
132
133 if (m_use_map) {
134 return m_sparseMemory->lookup(address);
135 } else {
136 uint64_t idx = mapAddressToLocalIdx(address);
137 assert(idx < m_num_entries);
138 return m_entries[idx];
139 }
140}
141
142AbstractEntry*
143DirectoryMemory::allocate(const PhysAddress& address, AbstractEntry* entry)
144{
145 assert(isPresent(address));
146 uint64 idx;
147 DPRINTF(RubyCache, "Looking up address: %s\n", address);
148
149 if (m_use_map) {
150 m_sparseMemory->add(address, entry);
151 entry->changePermission(AccessPermission_Read_Write);
152 } else {
153 idx = mapAddressToLocalIdx(address);
154 assert(idx < m_num_entries);
155 entry->getDataBlk().assign(m_ram->getBlockPtr(address));
156 entry->changePermission(AccessPermission_Read_Only);
157 m_entries[idx] = entry;
158 }
159
160 return entry;
161}
162
163void
164DirectoryMemory::invalidateBlock(PhysAddress address)
165{
166 if (m_use_map) {
167 assert(m_sparseMemory->exist(address));
168 m_sparseMemory->remove(address);
169 }
170#if 0
171 else {
172 assert(isPresent(address));
173
|
175
176 if (index < 0 || index > m_size) {
177 ERROR_MSG("Directory Memory Assertion: "
178 "accessing memory out of range.");
179 }
180
181 if (m_entries[index] != NULL){
182 delete m_entries[index];
183 m_entries[index] = NULL;
184 }
185 }
186#endif
187}
188
189void
190DirectoryMemory::print(ostream& out) const
191{
192}
193
194void
195DirectoryMemory::regStats()
196{
197 if (m_use_map) {
198 m_sparseMemory->regStats(name());
199 }
200}
201
202void
203DirectoryMemory::recordRequestType(DirectoryRequestType requestType) {
204 DPRINTF(RubyStats, "Recorded statistic: %s\n",
205 DirectoryRequestType_to_string(requestType));
206}
207
208DirectoryMemory *
209RubyDirectoryMemoryParams::create()
210{
211 return new DirectoryMemory(this);
212}
| 175
176 if (index < 0 || index > m_size) {
177 ERROR_MSG("Directory Memory Assertion: "
178 "accessing memory out of range.");
179 }
180
181 if (m_entries[index] != NULL){
182 delete m_entries[index];
183 m_entries[index] = NULL;
184 }
185 }
186#endif
187}
188
189void
190DirectoryMemory::print(ostream& out) const
191{
192}
193
194void
195DirectoryMemory::regStats()
196{
197 if (m_use_map) {
198 m_sparseMemory->regStats(name());
199 }
200}
201
202void
203DirectoryMemory::recordRequestType(DirectoryRequestType requestType) {
204 DPRINTF(RubyStats, "Recorded statistic: %s\n",
205 DirectoryRequestType_to_string(requestType));
206}
207
208DirectoryMemory *
209RubyDirectoryMemoryParams::create()
210{
211 return new DirectoryMemory(this);
212}
|