MESI_Two_Level.py revision 9826
1# Copyright (c) 2006-2007 The Regents of The University of Michigan 2# Copyright (c) 2009 Advanced Micro Devices, Inc. 3# All rights reserved. 4# 5# Redistribution and use in source and binary forms, with or without 6# modification, are permitted provided that the following conditions are 7# met: redistributions of source code must retain the above copyright 8# notice, this list of conditions and the following disclaimer; 9# redistributions in binary form must reproduce the above copyright 10# notice, this list of conditions and the following disclaimer in the 11# documentation and/or other materials provided with the distribution; 12# neither the name of the copyright holders nor the names of its 13# contributors may be used to endorse or promote products derived from 14# this software without specific prior written permission. 15# 16# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27# 28# Authors: Brad Beckmann 29 30import math 31import m5 32from m5.objects import * 33from m5.defines import buildEnv 34from Ruby import create_topology 35 36# 37# Note: the L1 Cache latency is only used by the sequencer on fast path hits 38# 39class L1Cache(RubyCache): 40 latency = 3 41 42# 43# Note: the L2 Cache latency is not currently used 44# 45class L2Cache(RubyCache): 46 latency = 15 47 48def define_options(parser): 49 return 50 51def create_system(options, system, piobus, dma_ports, ruby_system): 52 53 if buildEnv['PROTOCOL'] != 'MESI_CMP_directory': 54 panic("This script requires the MESI_CMP_directory protocol to be built.") 55 56 cpu_sequencers = [] 57 58 # 59 # The ruby network creation expects the list of nodes in the system to be 60 # consistent with the NetDest list. Therefore the l1 controller nodes must be 61 # listed before the directory nodes and directory nodes before dma nodes, etc. 62 # 63 l1_cntrl_nodes = [] 64 l2_cntrl_nodes = [] 65 dir_cntrl_nodes = [] 66 dma_cntrl_nodes = [] 67 68 # 69 # Must create the individual controllers before the network to ensure the 70 # controller constructors are called before the network constructor 71 # 72 l2_bits = int(math.log(options.num_l2caches, 2)) 73 block_size_bits = int(math.log(options.cacheline_size, 2)) 74 75 cntrl_count = 0 76 77 for i in xrange(options.num_cpus): 78 # 79 # First create the Ruby objects associated with this cpu 80 # 81 l1i_cache = L1Cache(size = options.l1i_size, 82 assoc = options.l1i_assoc, 83 start_index_bit = block_size_bits, 84 is_icache = True) 85 l1d_cache = L1Cache(size = options.l1d_size, 86 assoc = options.l1d_assoc, 87 start_index_bit = block_size_bits, 88 is_icache = False) 89 90 prefetcher = RubyPrefetcher.Prefetcher() 91 92 l1_cntrl = L1Cache_Controller(version = i, 93 cntrl_id = cntrl_count, 94 L1Icache = l1i_cache, 95 L1Dcache = l1d_cache, 96 l2_select_num_bits = l2_bits, 97 send_evictions = ( 98 options.cpu_type == "detailed"), 99 prefetcher = prefetcher, 100 ruby_system = ruby_system, 101 enable_prefetch = False) 102 103 cpu_seq = RubySequencer(version = i, 104 icache = l1i_cache, 105 dcache = l1d_cache, 106 ruby_system = ruby_system) 107 108 l1_cntrl.sequencer = cpu_seq 109 110 if piobus != None: 111 cpu_seq.pio_port = piobus.slave 112 113 exec("ruby_system.l1_cntrl%d = l1_cntrl" % i) 114 115 # 116 # Add controllers and sequencers to the appropriate lists 117 # 118 cpu_sequencers.append(cpu_seq) 119 l1_cntrl_nodes.append(l1_cntrl) 120 121 cntrl_count += 1 122 123 l2_index_start = block_size_bits + l2_bits 124 125 for i in xrange(options.num_l2caches): 126 # 127 # First create the Ruby objects associated with this cpu 128 # 129 l2_cache = L2Cache(size = options.l2_size, 130 assoc = options.l2_assoc, 131 start_index_bit = l2_index_start) 132 133 l2_cntrl = L2Cache_Controller(version = i, 134 cntrl_id = cntrl_count, 135 L2cache = l2_cache, 136 ruby_system = ruby_system) 137 138 exec("ruby_system.l2_cntrl%d = l2_cntrl" % i) 139 l2_cntrl_nodes.append(l2_cntrl) 140 141 cntrl_count += 1 142 143 phys_mem_size = sum(map(lambda r: r.size(), system.mem_ranges)) 144 assert(phys_mem_size % options.num_dirs == 0) 145 mem_module_size = phys_mem_size / options.num_dirs 146 147 # Run each of the ruby memory controllers at a ratio of the frequency of 148 # the ruby system 149 # clk_divider value is a fix to pass regression. 150 ruby_system.memctrl_clk_domain = DerivedClockDomain( 151 clk_domain=ruby_system.clk_domain, 152 clk_divider=3) 153 154 for i in xrange(options.num_dirs): 155 # 156 # Create the Ruby objects associated with the directory controller 157 # 158 159 mem_cntrl = RubyMemoryControl( 160 clk_domain = ruby_system.memctrl_clk_domain, 161 version = i, 162 ruby_system = ruby_system) 163 164 dir_size = MemorySize('0B') 165 dir_size.value = mem_module_size 166 167 dir_cntrl = Directory_Controller(version = i, 168 cntrl_id = cntrl_count, 169 directory = \ 170 RubyDirectoryMemory(version = i, 171 size = dir_size, 172 use_map = 173 options.use_map), 174 memBuffer = mem_cntrl, 175 ruby_system = ruby_system) 176 177 exec("ruby_system.dir_cntrl%d = dir_cntrl" % i) 178 dir_cntrl_nodes.append(dir_cntrl) 179 180 cntrl_count += 1 181 182 for i, dma_port in enumerate(dma_ports): 183 # 184 # Create the Ruby objects associated with the dma controller 185 # 186 dma_seq = DMASequencer(version = i, 187 ruby_system = ruby_system) 188 189 dma_cntrl = DMA_Controller(version = i, 190 cntrl_id = cntrl_count, 191 dma_sequencer = dma_seq, 192 ruby_system = ruby_system) 193 194 exec("ruby_system.dma_cntrl%d = dma_cntrl" % i) 195 exec("ruby_system.dma_cntrl%d.dma_sequencer.slave = dma_port" % i) 196 dma_cntrl_nodes.append(dma_cntrl) 197 cntrl_count += 1 198 199 all_cntrls = l1_cntrl_nodes + \ 200 l2_cntrl_nodes + \ 201 dir_cntrl_nodes + \ 202 dma_cntrl_nodes 203 204 topology = create_topology(all_cntrls, options) 205 206 return (cpu_sequencers, dir_cntrl_nodes, topology) 207