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MESI_Two_Level.py
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MESI_Two_Level.py
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# Copyright (c) 2006-2007 The Regents of The University of Michigan
# Copyright (c) 2009 Advanced Micro Devices, Inc.
# 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.
import math
import m5
from m5.objects import *
from m5.defines import buildEnv
from Ruby import create_topology, create_directories
from Ruby import send_evicts
#
# Declare caches used by the protocol
#
class L1Cache(RubyCache): pass
class L2Cache(RubyCache): pass
def define_options(parser):
return
def create_system(options, full_system, system, dma_ports, bootmem,
ruby_system, cpus):
if buildEnv['PROTOCOL'] != 'MESI_Two_Level':
fatal("This script requires the MESI_Two_Level protocol to be built.")
cpu_sequencers = []
#
# The ruby network creation expects the list of nodes in the system to be
# consistent with the NetDest list. Therefore the l1 controller nodes must be
# listed before the directory nodes and directory nodes before dma nodes, etc.
#
l1_cntrl_nodes = []
l2_cntrl_nodes = []
dma_cntrl_nodes = []
#
# Must create the individual controllers before the network to ensure the
# controller constructors are called before the network constructor
#
l2_bits = int(math.log(options.num_l2caches, 2))
block_size_bits = int(math.log(options.cacheline_size, 2))
for i in range(options.num_cpus):
#
# First create the Ruby objects associated with this cpu
#
l1i_cache = L1Cache(size = options.l1i_size,
assoc = options.l1i_assoc,
start_index_bit = block_size_bits,
is_icache = True)
l1d_cache = L1Cache(size = options.l1d_size,
assoc = options.l1d_assoc,
start_index_bit = block_size_bits,
is_icache = False)
prefetcher = RubyPrefetcher()
clk_domain = cpus[i].clk_domain
l1_cntrl = L1Cache_Controller(version = i, L1Icache = l1i_cache,
L1Dcache = l1d_cache,
l2_select_num_bits = l2_bits,
send_evictions = send_evicts(options),
prefetcher = prefetcher,
ruby_system = ruby_system,
clk_domain = clk_domain,
transitions_per_cycle = options.ports,
enable_prefetch = False)
cpu_seq = RubySequencer(version = i,
dcache = l1d_cache, clk_domain = clk_domain,
ruby_system = ruby_system)
l1_cntrl.sequencer = cpu_seq
exec("ruby_system.l1_cntrl%d = l1_cntrl" % i)
# Add controllers and sequencers to the appropriate lists
cpu_sequencers.append(cpu_seq)
l1_cntrl_nodes.append(l1_cntrl)
# Connect the L1 controllers and the network
l1_cntrl.mandatoryQueue = MessageBuffer()
l1_cntrl.requestFromL1Cache = MessageBuffer()
l1_cntrl.requestFromL1Cache.out_port = ruby_system.network.in_port
l1_cntrl.responseFromL1Cache = MessageBuffer()
l1_cntrl.responseFromL1Cache.out_port = ruby_system.network.in_port
l1_cntrl.unblockFromL1Cache = MessageBuffer()
l1_cntrl.unblockFromL1Cache.out_port = ruby_system.network.in_port
l1_cntrl.optionalQueue = MessageBuffer()
l1_cntrl.requestToL1Cache = MessageBuffer()
l1_cntrl.requestToL1Cache.in_port = ruby_system.network.out_port
l1_cntrl.responseToL1Cache = MessageBuffer()
l1_cntrl.responseToL1Cache.in_port = ruby_system.network.out_port
l2_index_start = block_size_bits + l2_bits
for i in range(options.num_l2caches):
#
# First create the Ruby objects associated with this cpu
#
l2_cache = L2Cache(size = options.l2_size,
assoc = options.l2_assoc,
start_index_bit = l2_index_start)
l2_cntrl = L2Cache_Controller(version = i,
L2cache = l2_cache,
transitions_per_cycle = options.ports,
ruby_system = ruby_system)
exec("ruby_system.l2_cntrl%d = l2_cntrl" % i)
l2_cntrl_nodes.append(l2_cntrl)
# Connect the L2 controllers and the network
l2_cntrl.DirRequestFromL2Cache = MessageBuffer()
l2_cntrl.DirRequestFromL2Cache.out_port = ruby_system.network.in_port
l2_cntrl.L1RequestFromL2Cache = MessageBuffer()
l2_cntrl.L1RequestFromL2Cache.out_port = ruby_system.network.in_port
l2_cntrl.responseFromL2Cache = MessageBuffer()
l2_cntrl.responseFromL2Cache.out_port = ruby_system.network.in_port
l2_cntrl.unblockToL2Cache = MessageBuffer()
l2_cntrl.unblockToL2Cache.in_port = ruby_system.network.out_port
l2_cntrl.L1RequestToL2Cache = MessageBuffer()
l2_cntrl.L1RequestToL2Cache.in_port = ruby_system.network.out_port
l2_cntrl.responseToL2Cache = MessageBuffer()
l2_cntrl.responseToL2Cache.in_port = ruby_system.network.out_port
# Run each of the ruby memory controllers at a ratio of the frequency of
# the ruby system
# clk_divider value is a fix to pass regression.
ruby_system.memctrl_clk_domain = DerivedClockDomain(
clk_domain = ruby_system.clk_domain,
clk_divider = 3)
mem_dir_cntrl_nodes, rom_dir_cntrl_node = create_directories(
options, bootmem, ruby_system, system)
dir_cntrl_nodes = mem_dir_cntrl_nodes[:]
if rom_dir_cntrl_node is not None:
dir_cntrl_nodes.append(rom_dir_cntrl_node)
for dir_cntrl in dir_cntrl_nodes:
# Connect the directory controllers and the network
dir_cntrl.requestToDir = MessageBuffer()
dir_cntrl.requestToDir.in_port = ruby_system.network.out_port
dir_cntrl.responseToDir = MessageBuffer()
dir_cntrl.responseToDir.in_port = ruby_system.network.out_port
dir_cntrl.responseFromDir = MessageBuffer()
dir_cntrl.responseFromDir.out_port = ruby_system.network.in_port
dir_cntrl.requestToMemory = MessageBuffer()
dir_cntrl.responseFromMemory = MessageBuffer()
for i, dma_port in enumerate(dma_ports):
# Create the Ruby objects associated with the dma controller
dma_seq = DMASequencer(version = i, ruby_system = ruby_system,
in_ports = dma_port)
dma_cntrl = DMA_Controller(version = i, dma_sequencer = dma_seq,
transitions_per_cycle = options.ports,
ruby_system = ruby_system)
exec("ruby_system.dma_cntrl%d = dma_cntrl" % i)
dma_cntrl_nodes.append(dma_cntrl)
# Connect the dma controller to the network
dma_cntrl.mandatoryQueue = MessageBuffer()
dma_cntrl.responseFromDir = MessageBuffer(ordered = True)
dma_cntrl.responseFromDir.in_port = ruby_system.network.out_port
dma_cntrl.requestToDir = MessageBuffer()
dma_cntrl.requestToDir.out_port = ruby_system.network.in_port
all_cntrls = l1_cntrl_nodes + \
l2_cntrl_nodes + \
dir_cntrl_nodes + \
dma_cntrl_nodes
# Create the io controller and the sequencer
if full_system:
io_seq = DMASequencer(version = len(dma_ports),
ruby_system = ruby_system)
ruby_system._io_port = io_seq
io_controller = DMA_Controller(version = len(dma_ports),
dma_sequencer = io_seq,
ruby_system = ruby_system)
ruby_system.io_controller = io_controller
# Connect the dma controller to the network
io_controller.mandatoryQueue = MessageBuffer()
io_controller.responseFromDir = MessageBuffer(ordered = True)
io_controller.responseFromDir.in_port = ruby_system.network.out_port
io_controller.requestToDir = MessageBuffer()
io_controller.requestToDir.out_port = ruby_system.network.in_port
all_cntrls = all_cntrls + [io_controller]
ruby_system.network.number_of_virtual_networks = 3
topology = create_topology(all_cntrls, options)
return (cpu_sequencers, mem_dir_cntrl_nodes, topology)