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: Ron Dreslinski 29# Brad Beckmann 30 31import m5 32from m5.objects import * 33from m5.defines import buildEnv 34from m5.util import addToPath 35import os, optparse, sys 36addToPath('../common') 37addToPath('../ruby') 38 39import Ruby 40 41# Get paths we might need. It's expected this file is in m5/configs/example. 42config_path = os.path.dirname(os.path.abspath(__file__)) 43config_root = os.path.dirname(config_path) 44m5_root = os.path.dirname(config_root) 45 46parser = optparse.OptionParser() 47 48parser.add_option("-l", "--maxloads", metavar="N", default=0, 49 help="Stop after N loads") 50parser.add_option("--progress", type="int", default=1000, 51 metavar="NLOADS", 52 help="Progress message interval " 53 "[default: %default]") 54parser.add_option("--num-dmas", type="int", default=0, help="# of dma testers") 55parser.add_option("--functional", type="int", default=0, 56 help="percentage of accesses that should be functional") 57parser.add_option("--suppress-func-warnings", action="store_true", 58 help="suppress warnings when functional accesses fail") 59 60# 61# Add the ruby specific and protocol specific options 62# 63Ruby.define_options(parser) 64 65execfile(os.path.join(config_root, "common", "Options.py")) 66 67(options, args) = parser.parse_args() 68 69# 70# Set the default cache size and associativity to be very small to encourage 71# races between requests and writebacks. 72# 73options.l1d_size="256B" 74options.l1i_size="256B" 75options.l2_size="512B" 76options.l3_size="1kB" 77options.l1d_assoc=2 78options.l1i_assoc=2 79options.l2_assoc=2 80options.l3_assoc=2 81 82if args: 83 print "Error: script doesn't take any positional arguments" 84 sys.exit(1) 85 86block_size = 64 87 88if options.num_cpus > block_size: 89 print "Error: Number of testers %d limited to %d because of false sharing" \ 90 % (options.num_cpus, block_size) 91 sys.exit(1) 92 93# 94# Currently ruby does not support atomic or uncacheable accesses 95# 96cpus = [ MemTest(atomic = False, 97 max_loads = options.maxloads, 98 issue_dmas = False, 99 percent_functional = options.functional, 100 percent_uncacheable = 0, 101 progress_interval = options.progress, 102 suppress_func_warnings = options.suppress_func_warnings) \ 103 for i in xrange(options.num_cpus) ] 104 105system = System(cpu = cpus, 106 funcmem = PhysicalMemory(), 107 physmem = PhysicalMemory()) 108 109if options.num_dmas > 0: 110 dmas = [ MemTest(atomic = False, 111 max_loads = options.maxloads, 112 issue_dmas = True, 113 percent_functional = 0, 114 percent_uncacheable = 0, 115 progress_interval = options.progress, 116 warn_on_failure = options.warn_on_failure) \ 117 for i in xrange(options.num_dmas) ] 118 system.dma_devices = dmas 119else: 120 dmas = [] 121 122Ruby.create_system(options, system, dma_devices = dmas) 123 124# 125# The tester is most effective when randomization is turned on and 126# artifical delay is randomly inserted on messages 127# 128system.ruby.randomization = True 129 130assert(len(cpus) == len(system.ruby._cpu_ruby_ports)) 131 132for (i, cpu) in enumerate(cpus): 133 # 134 # Tie the cpu memtester ports to the correct system ports 135 #
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