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# Copyright (c) 2012-2013, 2015 ARM Limited
# All rights reserved.
#
# The license below extends only to copyright in the software and shall
# not be construed as granting a license to any other intellectual
# property including but not limited to intellectual property relating
# to a hardware implementation of the functionality of the software
# licensed hereunder. You may use the software subject to the license
# terms below provided that you ensure that this notice is replicated
# unmodified and in its entirety in all distributions of the software,
# modified or unmodified, in source code or in binary form.
#
# Copyright (c) 2005-2007 The Regents of The University of Michigan
# 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: Nathan Binkert
from m5.params import *
from m5.proxy import *
from MemObject import MemObject
from Prefetcher import BasePrefetcher
from Tags import *
class BaseCache(MemObject):
type = 'BaseCache'
cxx_header = "mem/cache/base.hh"
size = Param.MemorySize("Capacity")
assoc = Param.Unsigned("Associativity")
hit_latency = Param.Cycles("Hit latency")
response_latency = Param.Cycles("Latency for the return path on a miss");
max_miss_count = Param.Counter(0,
"Number of misses to handle before calling exit")
mshrs = Param.Unsigned("Number of MSHRs (max outstanding requests)")
demand_mshr_reserve = Param.Unsigned(1, "MSHRs reserved for demand access")
tgts_per_mshr = Param.Unsigned("Max number of accesses per MSHR")
write_buffers = Param.Unsigned(8, "Number of write buffers")
forward_snoops = Param.Bool(True,
"Forward snoops from mem side to cpu side")
is_read_only = Param.Bool(False, "Is this cache read only (e.g. inst)")
prefetcher = Param.BasePrefetcher(NULL,"Prefetcher attached to cache")
prefetch_on_access = Param.Bool(False,
"Notify the hardware prefetcher on every access (not just misses)")
tags = Param.BaseTags(LRU(), "Tag store (replacement policy)")
sequential_access = Param.Bool(False,
"Whether to access tags and data sequentially")
cpu_side = SlavePort("Upstream port closer to the CPU and/or device")
mem_side = MasterPort("Downstream port closer to memory")
addr_ranges = VectorParam.AddrRange([AllMemory],
"Address range for the CPU-side port (to allow striping)")
system = Param.System(Parent.any, "System we belong to")
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