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author | Nilay Vaish <nilay@cs.wisc.edu> | 2014-09-01 16:55:40 -0500 |
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committer | Nilay Vaish <nilay@cs.wisc.edu> | 2014-09-01 16:55:40 -0500 |
commit | 82d136285dac52a97384961a814d5a0dda4a6482 (patch) | |
tree | 7e5a7cb87120591f8d87e73cfad4f9d5a300ee67 /src/mem/ruby/structures/DirectoryMemory.cc | |
parent | 01f792a3675983411ff77b54cbee7ffee2a3d5d5 (diff) | |
download | gem5-82d136285dac52a97384961a814d5a0dda4a6482.tar.xz |
ruby: move files from ruby/system to ruby/structures
The directory ruby/system is crowded and unorganized. Hence, the files the
hold actual physical structures, are being moved to the directory
ruby/structures. This includes Cache Memory, Directory Memory,
Memory Controller, Wire Buffer, TBE Table, Perfect Cache Memory, Timer Table,
Bank Array.
The directory ruby/systems has the glue code that holds these structures
together.
--HG--
rename : src/mem/ruby/system/MachineID.hh => src/mem/ruby/common/MachineID.hh
rename : src/mem/ruby/buffers/MessageBuffer.cc => src/mem/ruby/network/MessageBuffer.cc
rename : src/mem/ruby/buffers/MessageBuffer.hh => src/mem/ruby/network/MessageBuffer.hh
rename : src/mem/ruby/buffers/MessageBufferNode.cc => src/mem/ruby/network/MessageBufferNode.cc
rename : src/mem/ruby/buffers/MessageBufferNode.hh => src/mem/ruby/network/MessageBufferNode.hh
rename : src/mem/ruby/system/AbstractReplacementPolicy.hh => src/mem/ruby/structures/AbstractReplacementPolicy.hh
rename : src/mem/ruby/system/BankedArray.cc => src/mem/ruby/structures/BankedArray.cc
rename : src/mem/ruby/system/BankedArray.hh => src/mem/ruby/structures/BankedArray.hh
rename : src/mem/ruby/system/Cache.py => src/mem/ruby/structures/Cache.py
rename : src/mem/ruby/system/CacheMemory.cc => src/mem/ruby/structures/CacheMemory.cc
rename : src/mem/ruby/system/CacheMemory.hh => src/mem/ruby/structures/CacheMemory.hh
rename : src/mem/ruby/system/DirectoryMemory.cc => src/mem/ruby/structures/DirectoryMemory.cc
rename : src/mem/ruby/system/DirectoryMemory.hh => src/mem/ruby/structures/DirectoryMemory.hh
rename : src/mem/ruby/system/DirectoryMemory.py => src/mem/ruby/structures/DirectoryMemory.py
rename : src/mem/ruby/system/LRUPolicy.hh => src/mem/ruby/structures/LRUPolicy.hh
rename : src/mem/ruby/system/MemoryControl.cc => src/mem/ruby/structures/MemoryControl.cc
rename : src/mem/ruby/system/MemoryControl.hh => src/mem/ruby/structures/MemoryControl.hh
rename : src/mem/ruby/system/MemoryControl.py => src/mem/ruby/structures/MemoryControl.py
rename : src/mem/ruby/system/MemoryNode.cc => src/mem/ruby/structures/MemoryNode.cc
rename : src/mem/ruby/system/MemoryNode.hh => src/mem/ruby/structures/MemoryNode.hh
rename : src/mem/ruby/system/MemoryVector.hh => src/mem/ruby/structures/MemoryVector.hh
rename : src/mem/ruby/system/PerfectCacheMemory.hh => src/mem/ruby/structures/PerfectCacheMemory.hh
rename : src/mem/ruby/system/PersistentTable.cc => src/mem/ruby/structures/PersistentTable.cc
rename : src/mem/ruby/system/PersistentTable.hh => src/mem/ruby/structures/PersistentTable.hh
rename : src/mem/ruby/system/PseudoLRUPolicy.hh => src/mem/ruby/structures/PseudoLRUPolicy.hh
rename : src/mem/ruby/system/RubyMemoryControl.cc => src/mem/ruby/structures/RubyMemoryControl.cc
rename : src/mem/ruby/system/RubyMemoryControl.hh => src/mem/ruby/structures/RubyMemoryControl.hh
rename : src/mem/ruby/system/RubyMemoryControl.py => src/mem/ruby/structures/RubyMemoryControl.py
rename : src/mem/ruby/system/SparseMemory.cc => src/mem/ruby/structures/SparseMemory.cc
rename : src/mem/ruby/system/SparseMemory.hh => src/mem/ruby/structures/SparseMemory.hh
rename : src/mem/ruby/system/TBETable.hh => src/mem/ruby/structures/TBETable.hh
rename : src/mem/ruby/system/TimerTable.cc => src/mem/ruby/structures/TimerTable.cc
rename : src/mem/ruby/system/TimerTable.hh => src/mem/ruby/structures/TimerTable.hh
rename : src/mem/ruby/system/WireBuffer.cc => src/mem/ruby/structures/WireBuffer.cc
rename : src/mem/ruby/system/WireBuffer.hh => src/mem/ruby/structures/WireBuffer.hh
rename : src/mem/ruby/system/WireBuffer.py => src/mem/ruby/structures/WireBuffer.py
rename : src/mem/ruby/recorder/CacheRecorder.cc => src/mem/ruby/system/CacheRecorder.cc
rename : src/mem/ruby/recorder/CacheRecorder.hh => src/mem/ruby/system/CacheRecorder.hh
Diffstat (limited to 'src/mem/ruby/structures/DirectoryMemory.cc')
-rw-r--r-- | src/mem/ruby/structures/DirectoryMemory.cc | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/src/mem/ruby/structures/DirectoryMemory.cc b/src/mem/ruby/structures/DirectoryMemory.cc new file mode 100644 index 000000000..db165460c --- /dev/null +++ b/src/mem/ruby/structures/DirectoryMemory.cc @@ -0,0 +1,212 @@ +/* + * 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. + */ + +#include "base/intmath.hh" +#include "debug/RubyCache.hh" +#include "debug/RubyStats.hh" +#include "mem/ruby/slicc_interface/RubySlicc_Util.hh" +#include "mem/ruby/structures/DirectoryMemory.hh" +#include "mem/ruby/system/System.hh" + +using namespace std; + +int DirectoryMemory::m_num_directories = 0; +int DirectoryMemory::m_num_directories_bits = 0; +uint64_t DirectoryMemory::m_total_size_bytes = 0; +int DirectoryMemory::m_numa_high_bit = 0; + +DirectoryMemory::DirectoryMemory(const Params *p) + : SimObject(p) +{ + m_version = p->version; + m_size_bytes = p->size; + m_size_bits = floorLog2(m_size_bytes); + m_num_entries = 0; + m_use_map = p->use_map; + m_map_levels = p->map_levels; + m_numa_high_bit = p->numa_high_bit; +} + +void +DirectoryMemory::init() +{ + m_num_entries = m_size_bytes / RubySystem::getBlockSizeBytes(); + + if (m_use_map) { + m_sparseMemory = new SparseMemory(m_map_levels); + g_system_ptr->registerSparseMemory(m_sparseMemory); + } else { + m_entries = new AbstractEntry*[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 = ceilLog2(m_num_directories); + m_total_size_bytes += m_size_bytes; + + if (m_numa_high_bit == 0) { + m_numa_high_bit = RubySystem::getMemorySizeBits() - 1; + } + assert(m_numa_high_bit != 0); +} + +DirectoryMemory::~DirectoryMemory() +{ + // free up all the directory entries + if (m_entries != NULL) { + for (uint64 i = 0; i < m_num_entries; i++) { + if (m_entries[i] != NULL) { + delete m_entries[i]; + } + } + delete [] m_entries; + } else if (m_use_map) { + delete m_sparseMemory; + } +} + +uint64 +DirectoryMemory::mapAddressToDirectoryVersion(PhysAddress address) +{ + if (m_num_directories_bits == 0) + return 0; + + uint64 ret = address.bitSelect(m_numa_high_bit - m_num_directories_bits + 1, + m_numa_high_bit); + return ret; +} + +bool +DirectoryMemory::isPresent(PhysAddress address) +{ + bool ret = (mapAddressToDirectoryVersion(address) == m_version); + return ret; +} + +uint64 +DirectoryMemory::mapAddressToLocalIdx(PhysAddress address) +{ + uint64 ret; + if (m_num_directories_bits > 0) { + ret = address.bitRemove(m_numa_high_bit - m_num_directories_bits + 1, + m_numa_high_bit); + } else { + ret = address.getAddress(); + } + + return ret >> (RubySystem::getBlockSizeBits()); +} + +AbstractEntry* +DirectoryMemory::lookup(PhysAddress address) +{ + assert(isPresent(address)); + DPRINTF(RubyCache, "Looking up address: %s\n", address); + + if (m_use_map) { + return m_sparseMemory->lookup(address); + } else { + uint64_t idx = mapAddressToLocalIdx(address); + assert(idx < m_num_entries); + return m_entries[idx]; + } +} + +AbstractEntry* +DirectoryMemory::allocate(const PhysAddress& address, AbstractEntry* entry) +{ + assert(isPresent(address)); + uint64 idx; + DPRINTF(RubyCache, "Looking up address: %s\n", address); + + if (m_use_map) { + m_sparseMemory->add(address, entry); + entry->changePermission(AccessPermission_Read_Write); + } else { + idx = mapAddressToLocalIdx(address); + assert(idx < m_num_entries); + entry->getDataBlk().assign(m_ram->getBlockPtr(address)); + entry->changePermission(AccessPermission_Read_Only); + m_entries[idx] = entry; + } + + return entry; +} + +void +DirectoryMemory::invalidateBlock(PhysAddress address) +{ + if (m_use_map) { + assert(m_sparseMemory->exist(address)); + m_sparseMemory->remove(address); + } +#if 0 + else { + 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; + } + } +#endif +} + +void +DirectoryMemory::print(ostream& out) const +{ +} + +void +DirectoryMemory::regStats() +{ + if (m_use_map) { + m_sparseMemory->regStats(name()); + } +} + +void +DirectoryMemory::recordRequestType(DirectoryRequestType requestType) { + DPRINTF(RubyStats, "Recorded statistic: %s\n", + DirectoryRequestType_to_string(requestType)); +} + +DirectoryMemory * +RubyDirectoryMemoryParams::create() +{ + return new DirectoryMemory(this); +} |