BasicLink.py revision 8258:7c377f5162f8 
1# Copyright (c) 2011 Advanced Micro Devices, Inc.
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
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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
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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
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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
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25# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26#
27# Authors: Steve Reinhardt
28#          Brad Beckmann
29
30from m5.params import *
31from m5.SimObject import SimObject
32
33class BasicLink(SimObject):
34    type = 'BasicLink'
35    link_id = Param.Int("ID in relation to other links")
36    latency = Param.Int(1, "latency")
37    # The following banwidth factor does not translate to the same value for
38    # both the simple and Garnet models.  For the most part, the bandwidth
39    # factor is the width of the link in bytes, expect for certain situations
40    # with regard to the simple network.
41    bandwidth_factor = Param.Int("generic bandwidth factor, usually in bytes")
42    weight = Param.Int(1, "used to restrict routing in shortest path analysis")
43
44class BasicExtLink(BasicLink):
45    type = 'BasicExtLink'
46    ext_node = Param.RubyController("External node")
47    int_node = Param.BasicRouter("ID of internal node")
48    bandwidth_factor = 64
49
50class BasicIntLink(BasicLink):
51    type = 'BasicIntLink'
52    node_a = Param.BasicRouter("Router on one end")
53    node_b = Param.BasicRouter("Router on other end")
54    bandwidth_factor = 16
55