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 34 35# 36# Note: the L1 Cache latency is only used by the sequencer on fast path hits 37# 38class L1Cache(RubyCache): 39 latency = 2 40 41# 42# Note: the L2 Cache latency is not currently used 43# 44class L2Cache(RubyCache): 45 latency = 10 46 47# 48# Probe filter is a cache, latency is not used 49# 50class ProbeFilter(RubyCache): 51 latency = 1 52 53def define_options(parser): 54 parser.add_option("--allow-atomic-migration", action="store_true", 55 help="allow migratory sharing for atomic only accessed blocks") 56 parser.add_option("--pf-on", action="store_true", 57 help="Hammer: enable Probe Filter") 58 59def create_system(options, system, piobus, dma_devices): 60 61 if buildEnv['PROTOCOL'] != 'MOESI_hammer': 62 panic("This script requires the MOESI_hammer protocol to be built.") 63 64 cpu_sequencers = [] 65 66 # 67 # The ruby network creation expects the list of nodes in the system to be 68 # consistent with the NetDest list. Therefore the l1 controller nodes must be 69 # listed before the directory nodes and directory nodes before dma nodes, etc. 70 # 71 l1_cntrl_nodes = [] 72 dir_cntrl_nodes = [] 73 dma_cntrl_nodes = [] 74 75 # 76 # Must create the individual controllers before the network to ensure the 77 # controller constructors are called before the network constructor 78 # 79 80 for i in xrange(options.num_cpus): 81 # 82 # First create the Ruby objects associated with this cpu 83 # 84 l1i_cache = L1Cache(size = options.l1i_size, 85 assoc = options.l1i_assoc) 86 l1d_cache = L1Cache(size = options.l1d_size, 87 assoc = options.l1d_assoc) 88 l2_cache = L2Cache(size = options.l2_size, 89 assoc = options.l2_assoc) 90 91 cpu_seq = RubySequencer(version = i, 92 icache = l1i_cache, 93 dcache = l1d_cache, 94 physMemPort = system.physmem.port, 95 physmem = system.physmem) 96 97 if piobus != None: 98 cpu_seq.pio_port = piobus.port 99 100 l1_cntrl = L1Cache_Controller(version = i, 101 sequencer = cpu_seq, 102 L1IcacheMemory = l1i_cache, 103 L1DcacheMemory = l1d_cache, 104 L2cacheMemory = l2_cache, 105 no_mig_atomic = not \ 106 options.allow_atomic_migration) 107
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111 exec("system.l1_cntrl%d = l1_cntrl" % i) 112 # 113 # Add controllers and sequencers to the appropriate lists 114 # 115 cpu_sequencers.append(cpu_seq) 116 l1_cntrl_nodes.append(l1_cntrl) 117 118 phys_mem_size = long(system.physmem.range.second) - \ 119 long(system.physmem.range.first) + 1 120 mem_module_size = phys_mem_size / options.num_dirs 121 122 # 123 # determine size and index bits for probe filter 124 # By default, the probe filter size is configured to be twice the 125 # size of the L2 cache. 126 # 127 pf_size = MemorySize(options.l2_size) 128 pf_size.value = pf_size.value * 2 129 dir_bits = int(math.log(options.num_dirs, 2)) 130 pf_bits = int(math.log(pf_size.value, 2)) 131 if options.numa_high_bit: 132 if options.numa_high_bit > 0: 133 # if numa high bit explicitly set, make sure it does not overlap 134 # with the probe filter index 135 assert(options.numa_high_bit - dir_bits > pf_bits) 136 137 # set the probe filter start bit to just above the block offset 138 pf_start_bit = 6 139 else: 140 if dir_bits > 0: 141 pf_start_bit = dir_bits + 5 142 else: 143 pf_start_bit = 6 144 145 for i in xrange(options.num_dirs): 146 # 147 # Create the Ruby objects associated with the directory controller 148 # 149 150 mem_cntrl = RubyMemoryControl(version = i) 151 152 dir_size = MemorySize('0B') 153 dir_size.value = mem_module_size 154 155 pf = ProbeFilter(size = pf_size, assoc = 4) 156 157 dir_cntrl = Directory_Controller(version = i, 158 directory = \ 159 RubyDirectoryMemory( \ 160 version = i, 161 size = dir_size, 162 use_map = options.use_map, 163 map_levels = \ 164 options.map_levels), 165 probeFilter = pf, 166 memBuffer = mem_cntrl, 167 probe_filter_enabled = \ 168 options.pf_on) 169
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