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/*
* 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.cc
*
* Description: See DirectoryMemory.hh
*
* $Id$
*
*/
#include "mem/ruby/system/System.hh"
#include "mem/ruby/system/DirectoryMemory.hh"
#include "mem/ruby/slicc_interface/RubySlicc_Util.hh"
#include "mem/ruby/slicc_interface/AbstractController.hh"
#include "mem/gems_common/util.hh"
int DirectoryMemory::m_num_directories = 0;
int DirectoryMemory::m_num_directories_bits = 0;
uint64_t DirectoryMemory::m_total_size_bytes = 0;
DirectoryMemory::DirectoryMemory(const string & name)
: m_name(name)
{
}
void DirectoryMemory::init(const vector<string> & argv)
{
m_controller = NULL;
for (vector<string>::const_iterator it = argv.begin(); it != argv.end(); it++) {
if ( (*it) == "version" )
m_version = atoi( (*(++it)).c_str() );
else if ( (*it) == "size_mb" ) {
m_size_bytes = atoi((*(++it)).c_str()) * static_cast<uint64>(1<<20);
m_size_bits = log_int(m_size_bytes);
} else if ( (*it) == "controller" ) {
m_controller = RubySystem::getController((*(++it)));
} else {
cerr << "DirectoryMemory: Unkown config parameter: " << (*it) << endl;
assert(0);
}
}
assert(m_controller != NULL);
m_num_entries = m_size_bytes / RubySystem::getBlockSizeBytes();
m_entries = new Directory_Entry*[m_num_entries];
for (int i=0; i < m_num_entries; i++)
m_entries[i] = NULL;
m_ram = g_system_ptr->getMemoryVector();
m_num_directories++;
m_num_directories_bits = log_int(m_num_directories);
m_total_size_bytes += m_size_bytes;
}
DirectoryMemory::~DirectoryMemory()
{
// free up all the directory entries
for (uint64 i=0;i<m_num_entries;i++) {
if (m_entries[i] != NULL) {
delete m_entries[i];
}
}
if (m_entries != NULL) {
delete [] m_entries;
}
}
void DirectoryMemory::printConfig(ostream& out) const
{
out << "DirectoryMemory module config: " << m_name << endl;
out << " controller: " << m_controller->getName() << endl;
out << " version: " << m_version << endl;
out << " memory_bits: " << m_size_bits << endl;
out << " memory_size_bytes: " << m_size_bytes << endl;
out << " memory_size_Kbytes: " << double(m_size_bytes) / (1<<10) << endl;
out << " memory_size_Mbytes: " << double(m_size_bytes) / (1<<20) << endl;
out << " memory_size_Gbytes: " << double(m_size_bytes) / (1<<30) << endl;
}
// Static method
void DirectoryMemory::printGlobalConfig(ostream & out)
{
out << "DirectoryMemory Global Config: " << endl;
out << " number of directory memories: " << m_num_directories << endl;
if (m_num_directories > 1) {
out << " number of selection bits: " << m_num_directories_bits << endl;
out << " selection bits: " << RubySystem::getBlockSizeBits()+m_num_directories_bits-1
<< "-" << RubySystem::getBlockSizeBits() << endl;
}
out << " total memory size bytes: " << m_total_size_bytes << endl;
out << " total memory size bits: " << log_int(m_total_size_bytes) << endl;
}
int DirectoryMemory::mapAddressToDirectoryVersion(PhysAddress address)
{
if (m_num_directories_bits == 0) return 0;
int ret = address.bitSelect(RubySystem::getBlockSizeBits(),
RubySystem::getBlockSizeBits()+m_num_directories_bits-1);
return ret;
}
// Public method
bool DirectoryMemory::isPresent(PhysAddress address)
{
bool ret = (mapAddressToDirectoryVersion(address) == m_version);
return ret;
}
int DirectoryMemory::mapAddressToLocalIdx(PhysAddress address)
{
int ret = address.getAddress() >> (RubySystem::getBlockSizeBits() + m_num_directories_bits);
return ret;
}
Directory_Entry& DirectoryMemory::lookup(PhysAddress address)
{
assert(isPresent(address));
Directory_Entry* entry;
int idx = mapAddressToLocalIdx(address);
entry = m_entries[idx];
if (entry == NULL) {
entry = new Directory_Entry;
entry->getDataBlk().assign(m_ram->getBlockPtr(address));
m_entries[idx] = entry;
}
return (*entry);
}
/*
Directory_Entry& DirectoryMemory::lookup(PhysAddress address)
{
assert(isPresent(address));
Index index = address.memoryModuleIndex();
if (index < 0 || index > m_size) {
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->getDataBlk().assign(m_ram->getBlockPtr(address));
// 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
{
}
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