src/mem/ruby/network/BasicLink.py

   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
   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
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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
  30 from m5.params import *
  31 from m5.SimObject import SimObject
  32
  33 class BasicLink(SimObject):
  34     type = 'BasicLink'
  35     cxx_header = "mem/ruby/network/BasicLink.hh"
  36     link_id = Param.Int("ID in relation to other links")
  37     latency = Param.Cycles(1, "latency")
  38     # The following banwidth factor does not translate to the same value for
  39     # both the simple and Garnet models.  For the most part, the bandwidth
  40     # factor is the width of the link in bytes, expect for certain situations
  41     # with regard to the simple network.
  42     bandwidth_factor = Param.Int("generic bandwidth factor, usually in bytes")
  43     weight = Param.Int(1, "used to restrict routing in shortest path analysis")
  44
  45 class BasicExtLink(BasicLink):
  46     type = 'BasicExtLink'
  47     cxx_header = "mem/ruby/network/BasicLink.hh"
  48     ext_node = Param.RubyController("External node")
  49     int_node = Param.BasicRouter("ID of internal node")
  50     bandwidth_factor = 16
  51
  52 class BasicIntLink(BasicLink):
  53     type = 'BasicIntLink'
  54     cxx_header = "mem/ruby/network/BasicLink.hh"
  55     node_a = Param.BasicRouter("Router on one end")
  56     node_b = Param.BasicRouter("Router on other end")
  57     bandwidth_factor = 16