# Copyright (c) 2015 Advanced Micro Devices, Inc.
# All rights reserved.
#
# For use for simulation and test purposes only
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# modification, are permitted provided that the following conditions are met:
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# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
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# software without specific prior written permission.
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# Authors: Steve Reinhardt
#          Brad Beckmann

from m5.params import *
from m5.proxy import *

from m5.objects.Sequencer import *

class RubyGPUCoalescer(RubyPort):
   type = 'RubyGPUCoalescer'
   cxx_class = 'GPUCoalescer'
   cxx_header = "mem/ruby/system/GPUCoalescer.hh"

   # max_outstanding_requests = (wave front slots) x (wave front size)
   max_outstanding_requests = Param.Int(40*64,
                                "max requests (incl. prefetches) outstanding")
   assume_rfo = Param.Bool(True, "assume protocol implementes Read for "
                           "Ownership coherence");

   icache = Param.RubyCache("")
   dcache = Param.RubyCache("")
   deadlock_threshold = Param.Cycles(500000,
       "max outstanding cycles for a request before " \
       "deadlock/livelock declared")
   garnet_standalone = Param.Bool(False, "")
   dcache_hit_latency = Param.Cycles(1, "Data cache hit latency")