sw.py revision 13731 
1# Copyright (c) 2015 The University of Illinois Urbana Champaign
2# All rights reserved
3#
4# Redistribution and use in source and binary forms, with or without
5# modification, are permitted provided that the following conditions are
6# met: redistributions of source code must retain the above copyright
7# notice, this list of conditions and the following disclaimer;
8# redistributions in binary form must reproduce the above copyright
9# notice, this list of conditions and the following disclaimer in the
10# documentation and/or other materials provided with the distribution;
11# neither the name of the copyright holders nor the names of its
12# contributors may be used to endorse or promote products derived from
13# this software without specific prior written permission.
14#
15# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26#
27# Authors: Mohammad Alian
28
29# This is an example of an n port network switch to work in dist-gem5.
30# Users can extend this to have different different topologies
31
32import optparse
33import sys
34
35import m5
36from m5.defines import buildEnv
37from m5.objects import *
38from m5.util import addToPath, fatal
39
40addToPath('../')
41
42from common import Simulation
43from common import Options
44
45def build_switch(options):
46    # instantiate an EtherSwitch
47    switch = EtherSwitch()
48    # instantiate distEtherLinks to connect switch ports
49    # to other gem5 instances
50    switch.portlink = [DistEtherLink(speed = options.ethernet_linkspeed,
51                                      delay = options.ethernet_linkdelay,
52                                      dist_rank = options.dist_rank,
53                                      dist_size = options.dist_size,
54                                      server_name = options.dist_server_name,
55                                      server_port = options.dist_server_port,
56                                      sync_start = options.dist_sync_start,
57                                      sync_repeat = options.dist_sync_repeat,
58                                      is_switch = True,
59                                      num_nodes = options.dist_size)
60                       for i in range(options.dist_size)]
61
62    for (i, link) in enumerate(switch.portlink):
63        link.int0 = switch.interface[i]
64
65    return switch
66
67def main():
68    # Add options
69    parser = optparse.OptionParser()
70    Options.addCommonOptions(parser)
71    Options.addFSOptions(parser)
72    (options, args) = parser.parse_args()
73
74    system = build_switch(options)
75    root = Root(full_system = True, system = system)
76    Simulation.run(options, root, None, None)
77
78if __name__ == "__m5_main__":
79    main()
80