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# Copyright (c) 2006-2007 The Regents of The University of Michigan
# Copyright (c) 2009 Advanced Micro Devices, Inc.
# Copyright (c) 2013 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.
#
# Authors: Brad Beckmann
# Nilay Vaish
import math
import m5
from m5.objects import *
from m5.defines import buildEnv
from Ruby import create_topology
from Ruby import send_evicts
#
# Note: the L1 Cache latency is only used by the sequencer on fast path hits
#
class L0Cache(RubyCache):
latency = 1
class L1Cache(RubyCache):
latency = 5
#
# Note: the L2 Cache latency is not currently used
#
class L2Cache(RubyCache):
latency = 15
def define_options(parser):
parser.add_option("--num-clusters", type="int", default=1,
help="number of clusters in a design in which there are shared\
caches private to clusters")
return
def create_system(options, full_system, system, dma_ports, ruby_system):
if buildEnv['PROTOCOL'] != 'MESI_Three_Level':
fatal("This script requires the MESI_Three_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.
#
l0_cntrl_nodes = []
l1_cntrl_nodes = []
l2_cntrl_nodes = []
dir_cntrl_nodes = []
dma_cntrl_nodes = []
assert (options.num_cpus % options.num_clusters == 0)
num_cpus_per_cluster = options.num_cpus / options.num_clusters
assert (options.num_l2caches % options.num_clusters == 0)
num_l2caches_per_cluster = options.num_l2caches / options.num_clusters
l2_bits = int(math.log(num_l2caches_per_cluster, 2))
block_size_bits = int(math.log(options.cacheline_size, 2))
l2_index_start = block_size_bits + l2_bits
#
# Must create the individual controllers before the network to ensure the
# controller constructors are called before the network constructor
#
for i in xrange(options.num_clusters):
for j in xrange(num_cpus_per_cluster):
#
# First create the Ruby objects associated with this cpu
#
l0i_cache = L0Cache(size = '4096B', assoc = 1, is_icache = True,
start_index_bit = block_size_bits, replacement_policy="LRU")
l0d_cache = L0Cache(size = '4096B', assoc = 1, is_icache = False,
start_index_bit = block_size_bits, replacement_policy="LRU")
l0_cntrl = L0Cache_Controller(version = i*num_cpus_per_cluster + j,
Icache = l0i_cache, Dcache = l0d_cache,
send_evictions = send_evicts(options),
clk_domain=system.cpu[i].clk_domain,
ruby_system = ruby_system)
cpu_seq = RubySequencer(version = i, icache = l0i_cache,
clk_domain=system.cpu[i].clk_domain,
dcache = l0d_cache, ruby_system = ruby_system)
l0_cntrl.sequencer = cpu_seq
l1_cache = L1Cache(size = options.l1d_size, assoc = options.l1d_assoc,
start_index_bit = block_size_bits, is_icache = False)
l1_cntrl = L1Cache_Controller(version = i*num_cpus_per_cluster+j,
cache = l1_cache, l2_select_num_bits = l2_bits,
cluster_id = i, ruby_system = ruby_system)
exec("ruby_system.l0_cntrl%d = l0_cntrl" % (
i*num_cpus_per_cluster+j))
exec("ruby_system.l1_cntrl%d = l1_cntrl" % (
i*num_cpus_per_cluster+j))
#
# Add controllers and sequencers to the appropriate lists
#
cpu_sequencers.append(cpu_seq)
l0_cntrl_nodes.append(l0_cntrl)
l1_cntrl_nodes.append(l1_cntrl)
# Connect the L0 and L1 controllers
l0_cntrl.bufferToL1 = l1_cntrl.bufferFromL0
l0_cntrl.bufferFromL1 = l1_cntrl.bufferToL0
# Connect the L1 controllers and the network
l1_cntrl.requestToL2 = ruby_system.network.slave
l1_cntrl.responseToL2 = ruby_system.network.slave
l1_cntrl.unblockToL2 = ruby_system.network.slave
l1_cntrl.requestFromL2 = ruby_system.network.master
l1_cntrl.responseFromL2 = ruby_system.network.master
for j in xrange(num_l2caches_per_cluster):
l2_cache = L2Cache(size = options.l2_size,
assoc = options.l2_assoc,
start_index_bit = l2_index_start)
l2_cntrl = L2Cache_Controller(
version = i * num_l2caches_per_cluster + j,
L2cache = l2_cache, cluster_id = i,
transitions_per_cycle=options.ports,
ruby_system = ruby_system)
exec("ruby_system.l2_cntrl%d = l2_cntrl" % (
i * num_l2caches_per_cluster + j))
l2_cntrl_nodes.append(l2_cntrl)
# Connect the L2 controllers and the network
l2_cntrl.DirRequestFromL2Cache = ruby_system.network.slave
l2_cntrl.L1RequestFromL2Cache = ruby_system.network.slave
l2_cntrl.responseFromL2Cache = ruby_system.network.slave
l2_cntrl.unblockToL2Cache = ruby_system.network.master
l2_cntrl.L1RequestToL2Cache = ruby_system.network.master
l2_cntrl.responseToL2Cache = ruby_system.network.master
phys_mem_size = sum(map(lambda r: r.size(), system.mem_ranges))
assert(phys_mem_size % options.num_dirs == 0)
mem_module_size = phys_mem_size / options.num_dirs
# 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)
for i in xrange(options.num_dirs):
#
# Create the Ruby objects associated with the directory controller
#
dir_size = MemorySize('0B')
dir_size.value = mem_module_size
dir_cntrl = Directory_Controller(version = i,
directory = RubyDirectoryMemory(
version = i, size = dir_size),
transitions_per_cycle = options.ports,
ruby_system = ruby_system)
exec("ruby_system.dir_cntrl%d = dir_cntrl" % i)
dir_cntrl_nodes.append(dir_cntrl)
# Connect the directory controllers and the network
dir_cntrl.requestToDir = ruby_system.network.master
dir_cntrl.responseToDir = ruby_system.network.master
dir_cntrl.responseFromDir = ruby_system.network.slave
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)
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)
exec("ruby_system.dma_cntrl%d.dma_sequencer.slave = dma_port" % i)
dma_cntrl_nodes.append(dma_cntrl)
all_cntrls = l0_cntrl_nodes + \
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.responseFromDir = ruby_system.network.master
io_controller.requestToDir = ruby_system.network.slave
all_cntrls = all_cntrls + [io_controller]
topology = create_topology(all_cntrls, options)
return (cpu_sequencers, dir_cntrl_nodes, topology)
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