a2c9213a31
JIRA: https://gem5.atlassian.net/browse/GEM5-543 Change-Id: I997d6a4e45319a74e21bd0d61d4af6118474c849 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/44513 Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br> Tested-by: kokoro <noreply+kokoro@google.com>
201 lines
8.9 KiB
Python
201 lines
8.9 KiB
Python
# Copyright (c) 2016 Georgia Institute of Technology
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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import math
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import m5
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from m5.objects import *
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from m5.defines import buildEnv
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from m5.util import addToPath, fatal, warn
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def define_options(parser):
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# By default, ruby uses the simple timing cpu
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parser.set_defaults(cpu_type="TimingSimpleCPU")
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parser.add_argument(
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"--topology", type=str, default="Crossbar",
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help="check configs/topologies for complete set")
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parser.add_argument(
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"--mesh-rows", type=int, default=0,
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help="the number of rows in the mesh topology")
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parser.add_argument(
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"--network", default="simple",
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choices=['simple', 'garnet'],
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help="""'simple'|'garnet' (garnet2.0 will be deprecated.)""")
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parser.add_argument(
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"--router-latency", action="store", type=int,
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default=1,
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help="""number of pipeline stages in the garnet router.
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Has to be >= 1.
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Can be over-ridden on a per router basis
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in the topology file.""")
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parser.add_argument(
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"--link-latency", action="store", type=int, default=1,
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help="""latency of each link the simple/garnet networks.
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Has to be >= 1. Can be over-ridden on a per link basis
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in the topology file.""")
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parser.add_argument(
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"--link-width-bits", action="store", type=int,
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default=128,
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help="width in bits for all links inside garnet.")
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parser.add_argument(
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"--vcs-per-vnet", action="store", type=int, default=4,
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help="""number of virtual channels per virtual network
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inside garnet network.""")
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parser.add_argument(
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"--routing-algorithm", action="store", type=int,
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default=0,
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help="""routing algorithm in network.
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0: weight-based table
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1: XY (for Mesh. see garnet/RoutingUnit.cc)
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2: Custom (see garnet/RoutingUnit.cc""")
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parser.add_argument(
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"--network-fault-model", action="store_true",
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default=False,
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help="""enable network fault model:
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see src/mem/ruby/network/fault_model/""")
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parser.add_argument(
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"--garnet-deadlock-threshold", action="store",
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type=int, default=50000,
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help="network-level deadlock threshold.")
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def create_network(options, ruby):
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# Allow legacy users to use garnet through garnet2.0 option
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# until next gem5 release.
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if options.network == "garnet2.0":
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warn("Usage of option 'garnet2.0' will be depracated. " \
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"Please use 'garnet' for using the latest garnet " \
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"version. Current version: 3.0")
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options.network = "garnet"
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# Set the network classes based on the command line options
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if options.network == "garnet":
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NetworkClass = GarnetNetwork
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IntLinkClass = GarnetIntLink
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ExtLinkClass = GarnetExtLink
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RouterClass = GarnetRouter
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InterfaceClass = GarnetNetworkInterface
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else:
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NetworkClass = SimpleNetwork
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IntLinkClass = SimpleIntLink
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ExtLinkClass = SimpleExtLink
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RouterClass = Switch
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InterfaceClass = None
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# Instantiate the network object
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# so that the controllers can connect to it.
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network = NetworkClass(ruby_system = ruby, topology = options.topology,
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routers = [], ext_links = [], int_links = [], netifs = [])
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return (network, IntLinkClass, ExtLinkClass, RouterClass, InterfaceClass)
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def init_network(options, network, InterfaceClass):
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if options.network == "garnet":
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network.num_rows = options.mesh_rows
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network.vcs_per_vnet = options.vcs_per_vnet
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network.ni_flit_size = options.link_width_bits / 8
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network.routing_algorithm = options.routing_algorithm
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network.garnet_deadlock_threshold = options.garnet_deadlock_threshold
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# Create Bridges and connect them to the corresponding links
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for intLink in network.int_links:
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intLink.src_net_bridge = NetworkBridge(
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link = intLink.network_link,
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vtype = 'OBJECT_LINK',
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width = intLink.src_node.width)
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intLink.src_cred_bridge = NetworkBridge(
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link = intLink.credit_link,
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vtype = 'LINK_OBJECT',
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width = intLink.src_node.width)
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intLink.dst_net_bridge = NetworkBridge(
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link = intLink.network_link,
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vtype = 'LINK_OBJECT',
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width = intLink.dst_node.width)
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intLink.dst_cred_bridge = NetworkBridge(
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link = intLink.credit_link,
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vtype = 'OBJECT_LINK',
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width = intLink.dst_node.width)
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for extLink in network.ext_links:
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ext_net_bridges = []
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ext_net_bridges.append(NetworkBridge(link =
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extLink.network_links[0],
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vtype = 'OBJECT_LINK',
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width = extLink.width))
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ext_net_bridges.append(NetworkBridge(link =
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extLink.network_links[1],
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vtype = 'LINK_OBJECT',
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width = extLink.width))
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extLink.ext_net_bridge = ext_net_bridges
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ext_credit_bridges = []
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ext_credit_bridges.append(NetworkBridge(link =
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extLink.credit_links[0],
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vtype = 'LINK_OBJECT',
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width = extLink.width))
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ext_credit_bridges.append(NetworkBridge(link =
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extLink.credit_links[1],
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vtype = 'OBJECT_LINK',
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width = extLink.width))
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extLink.ext_cred_bridge = ext_credit_bridges
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int_net_bridges = []
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int_net_bridges.append(NetworkBridge(link =
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extLink.network_links[0],
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vtype = 'LINK_OBJECT',
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width = extLink.int_node.width))
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int_net_bridges.append(NetworkBridge(link =
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extLink.network_links[1],
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vtype = 'OBJECT_LINK',
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width = extLink.int_node.width))
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extLink.int_net_bridge = int_net_bridges
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int_cred_bridges = []
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int_cred_bridges.append(NetworkBridge(link =
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extLink.credit_links[0],
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vtype = 'OBJECT_LINK',
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width = extLink.int_node.width))
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int_cred_bridges.append(NetworkBridge(link =
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extLink.credit_links[1],
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vtype = 'LINK_OBJECT',
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width = extLink.int_node.width))
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extLink.int_cred_bridge = int_cred_bridges
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if options.network == "simple":
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network.setup_buffers()
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if InterfaceClass != None:
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netifs = [InterfaceClass(id=i) \
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for (i,n) in enumerate(network.ext_links)]
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network.netifs = netifs
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if options.network_fault_model:
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assert(options.network == "garnet")
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network.enable_fault_model = True
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network.fault_model = FaultModel()
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