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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.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"
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_SIMULATING) {
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 );
int8 data_byte = 0;
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;
}
}
}
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