src/mem/ruby/system/DirectoryMemory.cc

   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.C
  32  *
  33  * Description: See DirectoryMemory.h
  34  *
  35  * $Id$
  36  *
  37  */
  38
  39 #include "System.hh"
  40 #include "Driver.hh"
  41 #include "DirectoryMemory.hh"
  42 #include "RubySlicc_Util.hh"
  43 #include "RubyConfig.hh"
  44 #include "Chip.hh"
  45 #include "interface.hh"
  46
  47 DirectoryMemory::DirectoryMemory(Chip* chip_ptr, int version)
  48 {
  49   m_chip_ptr = chip_ptr;
  50   m_version = version;
  51   // THIS DOESN'T SEEM TO WORK -- MRM
  52   // m_size = RubyConfig::memoryModuleBlocks()/RubyConfig::numberOfDirectory();
  53   m_size = RubyConfig::memoryModuleBlocks();
  54   assert(m_size > 0);
  55   // allocates an array of directory entry pointers & sets them to NULL
  56   m_entries = new Directory_Entry*[m_size];
  57   if (m_entries == NULL) {
  58     ERROR_MSG("Directory Memory: unable to allocate memory.");
  59   }
  60
  61   for (int i=0; i < m_size; i++) {
  62     m_entries[i] = NULL;
  63   }
  64 }
  65
  66 DirectoryMemory::~DirectoryMemory()
  67 {
  68   // free up all the directory entries
  69   for (int i=0; i < m_size; i++) {
  70     if (m_entries[i] != NULL) {
  71       delete m_entries[i];
  72       m_entries[i] = NULL;
  73     }
  74   }
  75
  76   // free up the array of directory entries
  77   delete[] m_entries;
  78 }
  79
  80 // Static method
  81 void DirectoryMemory::printConfig(ostream& out)
  82 {
  83   out << "Memory config:" << endl;
  84   out << "  memory_bits: " << RubyConfig::memorySizeBits() << endl;
  85   out << "  memory_size_bytes: " << RubyConfig::memorySizeBytes() << endl;
  86   out << "  memory_size_Kbytes: " << double(RubyConfig::memorySizeBytes()) / (1<<10) << endl;
  87   out << "  memory_size_Mbytes: " << double(RubyConfig::memorySizeBytes()) / (1<<20) << endl;
  88   out << "  memory_size_Gbytes: " << double(RubyConfig::memorySizeBytes()) / (1<<30) << endl;
  89
  90   out << "  module_bits: " << RubyConfig::memoryModuleBits() << endl;
  91   out << "  module_size_lines: " << RubyConfig::memoryModuleBlocks() << endl;
  92   out << "  module_size_bytes: " << RubyConfig::memoryModuleBlocks() * RubyConfig::dataBlockBytes() << endl;
  93   out << "  module_size_Kbytes: " << double(RubyConfig::memoryModuleBlocks() * RubyConfig::dataBlockBytes()) / (1<<10) << endl;
  94   out << "  module_size_Mbytes: " << double(RubyConfig::memoryModuleBlocks() * RubyConfig::dataBlockBytes()) / (1<<20) << endl;
  95 }
  96
  97 // Public method
  98 bool DirectoryMemory::isPresent(PhysAddress address)
  99 {
 100   return (map_Address_to_DirectoryNode(address) == m_chip_ptr->getID()*RubyConfig::numberOfDirectoryPerChip()+m_version);
 101 }
 102
 103 Directory_Entry& DirectoryMemory::lookup(PhysAddress address)
 104 {
 105   assert(isPresent(address));
 106   Index index = address.memoryModuleIndex();
 107
 108   if (index < 0 || index > m_size) {
 109     WARN_EXPR(m_chip_ptr->getID());
 110     WARN_EXPR(address.getAddress());
 111     WARN_EXPR(index);
 112     WARN_EXPR(m_size);
 113     ERROR_MSG("Directory Memory Assertion: accessing memory out of range.");
 114   }
 115   Directory_Entry* entry = m_entries[index];
 116
 117   // allocate the directory entry on demand.
 118   if (entry == NULL) {
 119     entry = new Directory_Entry;
 120
 121     //    entry->getProcOwner() = m_chip_ptr->getID(); // FIXME - This should not be hard coded
 122     //    entry->getDirOwner() = true;        // FIXME - This should not be hard-coded
 123
 124     // load the data from SimICS when first initalizing
 125     if (g_SIMICS) {
 126       if (DATA_BLOCK) {
 127         physical_address_t physAddr = address.getAddress();
 128
 129         for(int j=0; j < RubyConfig::dataBlockBytes(); j++) {
 130           int8 data_byte = (int8) SIMICS_read_physical_memory( m_chip_ptr->getID(),
 131                                                                physAddr + j, 1 );
 132           //printf("SimICS, byte %d: %lld\n", j, data_byte );
 133           entry->getDataBlk().setByte(j, data_byte);
 134         }
 135         DEBUG_EXPR(NODE_COMP, MedPrio,entry->getDataBlk());
 136       }
 137     }
 138
 139     // store entry to the table
 140     m_entries[index] = entry;
 141   }
 142
 143   return (*entry);
 144 }
 145
 146 /*
 147 void DirectoryMemory::invalidateBlock(PhysAddress address)
 148 {
 149   assert(isPresent(address));
 150
 151   Index index = address.memoryModuleIndex();
 152
 153   if (index < 0 || index > m_size) {
 154     ERROR_MSG("Directory Memory Assertion: accessing memory out of range.");
 155   }
 156
 157   if(m_entries[index] != NULL){
 158     delete m_entries[index];
 159     m_entries[index] = NULL;
 160   }
 161
 162 }
 163 */
 164
 165 void DirectoryMemory::print(ostream& out) const
 166 {
 167   out << "Directory dump: " << endl;
 168   for (int i=0; i < m_size; i++) {
 169     if (m_entries[i] != NULL) {
 170       out << i << ": ";
 171       out << *m_entries[i] << endl;
 172     }
 173   }
 174 }
 175