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# Copyright (c) 2018 Inria
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met: redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer;
# redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution;
# neither the name of the copyright holders nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Authors: Daniel Carvalho
from m5.params import *
from m5.proxy import *
from m5.SimObject import SimObject
class BaseReplacementPolicy(SimObject):
type = 'BaseReplacementPolicy'
abstract = True
cxx_header = "mem/cache/replacement_policies/base.hh"
class FIFORP(BaseReplacementPolicy):
type = 'FIFORP'
cxx_class = 'FIFORP'
cxx_header = "mem/cache/replacement_policies/fifo_rp.hh"
class LFURP(BaseReplacementPolicy):
type = 'LFURP'
cxx_class = 'LFURP'
cxx_header = "mem/cache/replacement_policies/lfu_rp.hh"
class LRURP(BaseReplacementPolicy):
type = 'LRURP'
cxx_class = 'LRURP'
cxx_header = "mem/cache/replacement_policies/lru_rp.hh"
class BIPRP(LRURP):
type = 'BIPRP'
cxx_class = 'BIPRP'
cxx_header = "mem/cache/replacement_policies/bip_rp.hh"
btp = Param.Percent(3, "Percentage of blocks to be inserted as MRU")
class MRURP(BaseReplacementPolicy):
type = 'MRURP'
cxx_class = 'MRURP'
cxx_header = "mem/cache/replacement_policies/mru_rp.hh"
class RandomRP(BaseReplacementPolicy):
type = 'RandomRP'
cxx_class = 'RandomRP'
cxx_header = "mem/cache/replacement_policies/random_rp.hh"
class BRRIPRP(BaseReplacementPolicy):
type = 'BRRIPRP'
cxx_class = 'BRRIPRP'
cxx_header = "mem/cache/replacement_policies/brrip_rp.hh"
max_RRPV = Param.Unsigned(3, "Maximum RRPV possible")
hit_priority = Param.Bool(False,
"Prioritize evicting blocks that havent had a hit recently")
btp = Param.Percent(3,
"Percentage of blocks to be inserted with long RRPV")
class RRIPRP(BRRIPRP):
btp = 0
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