GPUCoalescer.py revision 12697 
1# Copyright (c) 2015 Advanced Micro Devices, Inc.
2# All rights reserved.
3#
4# For use for simulation and test purposes only
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions are met:
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9# 1. Redistributions of source code must retain the above copyright notice,
10# this list of conditions and the following disclaimer.
11#
12# 2. Redistributions in binary form must reproduce the above copyright notice,
13# this list of conditions and the following disclaimer in the documentation
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16# 3. Neither the name of the copyright holder nor the names of its
17# contributors may be used to endorse or promote products derived from this
18# software without specific prior written permission.
19#
20# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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29# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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31#
32# Authors: Steve Reinhardt
33#          Brad Beckmann
34
35from m5.params import *
36from m5.proxy import *
37from Sequencer import *
38
39class RubyGPUCoalescer(RubyPort):
40   type = 'RubyGPUCoalescer'
41   cxx_class = 'GPUCoalescer'
42   cxx_header = "mem/ruby/system/GPUCoalescer.hh"
43
44   # max_outstanding_requests = (wave front slots) x (wave front size)
45   max_outstanding_requests = Param.Int(40*64,
46                                "max requests (incl. prefetches) outstanding")
47   assume_rfo = Param.Bool(True, "assume protocol implementes Read for "
48                           "Ownership coherence");
49
50   icache = Param.RubyCache("")
51   dcache = Param.RubyCache("")
52   deadlock_threshold = Param.Cycles(500000,
53       "max outstanding cycles for a request before " \
54       "deadlock/livelock declared")
55   garnet_standalone = Param.Bool(False, "")
56   dcache_hit_latency = Param.Cycles(1, "Data cache hit latency")
57