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Diffstat (limited to 'src/mem/ruby/system/DirectoryMemory.cc')
| -rw-r--r-- | src/mem/ruby/system/DirectoryMemory.cc | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/src/mem/ruby/system/DirectoryMemory.cc b/src/mem/ruby/system/DirectoryMemory.cc new file mode 100644 index 000000000..a1ec38cd2 --- /dev/null +++ b/src/mem/ruby/system/DirectoryMemory.cc @@ -0,0 +1,175 @@ + +/* + * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * DirectoryMemory.C + * + * Description: See DirectoryMemory.h + * + * $Id$ + * + */ + +#include "System.hh" +#include "Driver.hh" +#include "DirectoryMemory.hh" +#include "RubySlicc_Util.hh" +#include "RubyConfig.hh" +#include "Chip.hh" +#include "interface.hh" + +DirectoryMemory::DirectoryMemory(Chip* chip_ptr, int version) +{ + m_chip_ptr = chip_ptr; + m_version = version; + // THIS DOESN'T SEEM TO WORK -- MRM + // m_size = RubyConfig::memoryModuleBlocks()/RubyConfig::numberOfDirectory(); + m_size = RubyConfig::memoryModuleBlocks(); + assert(m_size > 0); + // allocates an array of directory entry pointers & sets them to NULL + m_entries = new Directory_Entry*[m_size]; + if (m_entries == NULL) { + ERROR_MSG("Directory Memory: unable to allocate memory."); + } + + for (int i=0; i < m_size; i++) { + m_entries[i] = NULL; + } +} + +DirectoryMemory::~DirectoryMemory() +{ + // free up all the directory entries + for (int i=0; i < m_size; i++) { + if (m_entries[i] != NULL) { + delete m_entries[i]; + m_entries[i] = NULL; + } + } + + // free up the array of directory entries + delete[] m_entries; +} + +// Static method +void DirectoryMemory::printConfig(ostream& out) +{ + out << "Memory config:" << endl; + out << " memory_bits: " << RubyConfig::memorySizeBits() << endl; + out << " memory_size_bytes: " << RubyConfig::memorySizeBytes() << endl; + out << " memory_size_Kbytes: " << double(RubyConfig::memorySizeBytes()) / (1<<10) << endl; + out << " memory_size_Mbytes: " << double(RubyConfig::memorySizeBytes()) / (1<<20) << endl; + out << " memory_size_Gbytes: " << double(RubyConfig::memorySizeBytes()) / (1<<30) << endl; + + out << " module_bits: " << RubyConfig::memoryModuleBits() << endl; + out << " module_size_lines: " << RubyConfig::memoryModuleBlocks() << endl; + out << " module_size_bytes: " << RubyConfig::memoryModuleBlocks() * RubyConfig::dataBlockBytes() << endl; + out << " module_size_Kbytes: " << double(RubyConfig::memoryModuleBlocks() * RubyConfig::dataBlockBytes()) / (1<<10) << endl; + out << " module_size_Mbytes: " << double(RubyConfig::memoryModuleBlocks() * RubyConfig::dataBlockBytes()) / (1<<20) << endl; +} + +// Public method +bool DirectoryMemory::isPresent(PhysAddress address) +{ + return (map_Address_to_DirectoryNode(address) == m_chip_ptr->getID()*RubyConfig::numberOfDirectoryPerChip()+m_version); +} + +Directory_Entry& DirectoryMemory::lookup(PhysAddress address) +{ + assert(isPresent(address)); + Index index = address.memoryModuleIndex(); + + if (index < 0 || index > m_size) { + WARN_EXPR(m_chip_ptr->getID()); + WARN_EXPR(address.getAddress()); + WARN_EXPR(index); + WARN_EXPR(m_size); + ERROR_MSG("Directory Memory Assertion: accessing memory out of range."); + } + Directory_Entry* entry = m_entries[index]; + + // allocate the directory entry on demand. + if (entry == NULL) { + entry = new Directory_Entry; + + // entry->getProcOwner() = m_chip_ptr->getID(); // FIXME - This should not be hard coded + // entry->getDirOwner() = true; // FIXME - This should not be hard-coded + + // load the data from SimICS when first initalizing + if (g_SIMICS) { + if (DATA_BLOCK) { + physical_address_t physAddr = address.getAddress(); + + for(int j=0; j < RubyConfig::dataBlockBytes(); j++) { + int8 data_byte = (int8) SIMICS_read_physical_memory( m_chip_ptr->getID(), + physAddr + j, 1 ); + //printf("SimICS, byte %d: %lld\n", j, data_byte ); + entry->getDataBlk().setByte(j, data_byte); + } + DEBUG_EXPR(NODE_COMP, MedPrio,entry->getDataBlk()); + } + } + + // store entry to the table + m_entries[index] = entry; + } + + return (*entry); +} + +/* +void DirectoryMemory::invalidateBlock(PhysAddress address) +{ + assert(isPresent(address)); + + Index index = address.memoryModuleIndex(); + + if (index < 0 || index > m_size) { + ERROR_MSG("Directory Memory Assertion: accessing memory out of range."); + } + + if(m_entries[index] != NULL){ + delete m_entries[index]; + m_entries[index] = NULL; + } + +} +*/ + +void DirectoryMemory::print(ostream& out) const +{ + out << "Directory dump: " << endl; + for (int i=0; i < m_size; i++) { + if (m_entries[i] != NULL) { + out << i << ": "; + out << *m_entries[i] << endl; + } + } +} + |