DirectoryMemory.cc revision 6285
1 2/* 3 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer; 10 * redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution; 13 * neither the name of the copyright holders nor the names of its 14 * contributors may be used to endorse or promote products derived from 15 * this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30/* 31 * DirectoryMemory.cc 32 * 33 * Description: See DirectoryMemory.hh 34 * 35 * $Id$ 36 * 37 */ 38 39#include "mem/ruby/system/System.hh" 40#include "mem/ruby/system/DirectoryMemory.hh" 41#include "mem/ruby/slicc_interface/RubySlicc_Util.hh" 42#include "mem/ruby/config/RubyConfig.hh" 43#include "mem/ruby/slicc_interface/AbstractController.hh" 44#include "mem/gems_common/util.hh" 45 46int DirectoryMemory::m_num_directories = 0; 47int DirectoryMemory::m_num_directories_bits = 0; 48int DirectoryMemory::m_total_size_bytes = 0; 49 50DirectoryMemory::DirectoryMemory(const string & name) 51 : m_name(name) 52{ 53} 54 55void DirectoryMemory::init(const vector<string> & argv) 56{ 57 m_controller = NULL; 58 for (vector<string>::const_iterator it = argv.begin(); it != argv.end(); it++) { 59 if ( (*it) == "version" ) 60 m_version = atoi( (*(++it)).c_str() ); 61 else if ( (*it) == "size_mb" ) { 62 m_size_bytes = atoi((*(++it)).c_str()) * (1<<20); 63 m_size_bits = log_int(m_size_bytes); 64 } else if ( (*it) == "controller" ) { 65 m_controller = RubySystem::getController((*(++it))); 66 } else 67 assert(0); 68 } 69 assert(m_controller != NULL); 70 71 m_num_entries = m_size_bytes / RubySystem::getBlockSizeBytes(); 72 m_entries = new Directory_Entry*[m_num_entries]; 73 for (int i=0; i < m_num_entries; i++) 74 m_entries[i] = NULL; 75 76 m_ram = g_system_ptr->getMemoryVector(); 77 78 m_num_directories++; 79 m_num_directories_bits = log_int(m_num_directories); 80 m_total_size_bytes += m_size_bytes; 81} 82 83DirectoryMemory::~DirectoryMemory() 84{ 85 // free up all the directory entries 86 for (int i=0;i<m_num_entries;i++) 87 if (m_entries[i] != NULL) 88 delete m_entries; 89 if (m_entries != NULL) 90 delete [] m_entries; 91} 92 93void DirectoryMemory::printConfig(ostream& out) const 94{ 95 out << "DirectoryMemory module config: " << m_name << endl; 96 out << " controller: " << m_controller->getName() << endl; 97 out << " version: " << m_version << endl; 98 out << " memory_bits: " << m_size_bits << endl; 99 out << " memory_size_bytes: " << m_size_bytes << endl; 100 out << " memory_size_Kbytes: " << double(m_size_bytes) / (1<<10) << endl; 101 out << " memory_size_Mbytes: " << double(m_size_bytes) / (1<<20) << endl; 102 out << " memory_size_Gbytes: " << double(m_size_bytes) / (1<<30) << endl; 103} 104 105// Static method 106void DirectoryMemory::printGlobalConfig(ostream & out) 107{ 108 out << "DirectoryMemory Global Config: " << endl; 109 out << " number of directory memories: " << m_num_directories << endl; 110 if (m_num_directories > 1) { 111 out << " number of selection bits: " << m_num_directories_bits << endl; 112 out << " selection bits: " << RubySystem::getBlockSizeBits()+m_num_directories_bits-1 113 << "-" << RubySystem::getBlockSizeBits() << endl; 114 } 115 out << " total memory size bytes: " << m_total_size_bytes << endl; 116 out << " total memory size bits: " << log_int(m_total_size_bytes) << endl; 117 118} 119 120int DirectoryMemory::mapAddressToDirectoryVersion(PhysAddress address) 121{ 122 if (m_num_directories_bits == 0) return 0; 123 int ret = address.bitSelect(RubySystem::getBlockSizeBits(), 124 RubySystem::getBlockSizeBits()+m_num_directories_bits-1); 125 return ret; 126} 127 128// Public method 129bool DirectoryMemory::isPresent(PhysAddress address) 130{ 131 bool ret = (mapAddressToDirectoryVersion(address) == m_version); 132 return ret; 133} 134 135int DirectoryMemory::mapAddressToLocalIdx(PhysAddress address) 136{ 137 int ret = address.getAddress() >> (RubySystem::getBlockSizeBits() + m_num_directories_bits); 138 return ret; 139} 140 141Directory_Entry& DirectoryMemory::lookup(PhysAddress address) 142{ 143 assert(isPresent(address)); 144 Directory_Entry* entry; 145 int idx = mapAddressToLocalIdx(address); 146 entry = m_entries[idx]; 147 if (entry == NULL) { 148 entry = new Directory_Entry; 149 entry->getDataBlk().assign(m_ram->getBlockPtr(address)); 150 m_entries[idx] = entry; 151 } 152 return (*entry); 153} 154/* 155Directory_Entry& DirectoryMemory::lookup(PhysAddress address) 156{ 157 assert(isPresent(address)); 158 Index index = address.memoryModuleIndex(); 159 160 if (index < 0 || index > m_size) { 161 WARN_EXPR(address.getAddress()); 162 WARN_EXPR(index); 163 WARN_EXPR(m_size); 164 ERROR_MSG("Directory Memory Assertion: accessing memory out of range."); 165 } 166 Directory_Entry* entry = m_entries[index]; 167 168 // allocate the directory entry on demand. 169 if (entry == NULL) { 170 entry = new Directory_Entry; 171 entry->getDataBlk().assign(m_ram->getBlockPtr(address)); 172 173 // store entry to the table 174 m_entries[index] = entry; 175 } 176 177 return (*entry); 178} 179*/ 180 181void DirectoryMemory::invalidateBlock(PhysAddress address) 182{ 183 /* 184 assert(isPresent(address)); 185 186 Index index = address.memoryModuleIndex(); 187 188 if (index < 0 || index > m_size) { 189 ERROR_MSG("Directory Memory Assertion: accessing memory out of range."); 190 } 191 192 if(m_entries[index] != NULL){ 193 delete m_entries[index]; 194 m_entries[index] = NULL; 195 } 196 */ 197} 198 199void DirectoryMemory::print(ostream& out) const 200{ 201 202} 203 204