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+# Copyright (c) 2016 Georgia Institute of Technology
+# 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: Tushar Krishna
+
+import math
+import m5
+from m5.objects import *
+from m5.defines import buildEnv
+from m5.util import addToPath, fatal
+
+def define_options(parser):
+ # By default, ruby uses the simple timing cpu
+ parser.set_defaults(cpu_type="timing")
+
+ parser.add_option("--topology", type="string", default="Crossbar",
+ help="check configs/topologies for complete set")
+ parser.add_option("--mesh-rows", type="int", default=1,
+ help="the number of rows in the mesh topology")
+ parser.add_option("--garnet-network", type="choice",
+ choices=['fixed', 'flexible'], help="'fixed'|'flexible'")
+ parser.add_option("--network-fault-model", action="store_true", default=False,
+ help="enable network fault model: see src/mem/ruby/network/fault_model/")
+
+
+def create_network(options, ruby):
+
+ # Set the network classes based on the command line options
+ if options.garnet_network == "fixed":
+ NetworkClass = GarnetNetwork_d
+ IntLinkClass = GarnetIntLink_d
+ ExtLinkClass = GarnetExtLink_d
+ RouterClass = GarnetRouter_d
+ InterfaceClass = GarnetNetworkInterface_d
+
+ elif options.garnet_network == "flexible":
+ NetworkClass = GarnetNetwork
+ IntLinkClass = GarnetIntLink
+ ExtLinkClass = GarnetExtLink
+ RouterClass = GarnetRouter
+ InterfaceClass = GarnetNetworkInterface
+
+ else:
+ NetworkClass = SimpleNetwork
+ IntLinkClass = SimpleIntLink
+ ExtLinkClass = SimpleExtLink
+ RouterClass = Switch
+ InterfaceClass = None
+
+ # Instantiate the network object
+ # so that the controllers can connect to it.
+ network = NetworkClass(ruby_system = ruby, topology = options.topology,
+ routers = [], ext_links = [], int_links = [], netifs = [])
+
+ return (network, IntLinkClass, ExtLinkClass, RouterClass, InterfaceClass)
+
+def init_network(options, network, InterfaceClass):
+
+ if options.garnet_network is None:
+ network.setup_buffers()
+
+ if InterfaceClass != None:
+ netifs = [InterfaceClass(id=i) \
+ for (i,n) in enumerate(network.ext_links)]
+ network.netifs = netifs
+
+ if options.network_fault_model:
+ assert(options.garnet_network == "fixed")
+ network.enable_fault_model = True
+ network.fault_model = FaultModel()