19796Sprakash.ramrakhyani@arm.com# Copyright (c) 2012-2013 ARM Limited 29796Sprakash.ramrakhyani@arm.com# All rights reserved. 39796Sprakash.ramrakhyani@arm.com# 49796Sprakash.ramrakhyani@arm.com# The license below extends only to copyright in the software and shall 59796Sprakash.ramrakhyani@arm.com# not be construed as granting a license to any other intellectual 69796Sprakash.ramrakhyani@arm.com# property including but not limited to intellectual property relating 79796Sprakash.ramrakhyani@arm.com# to a hardware implementation of the functionality of the software 89796Sprakash.ramrakhyani@arm.com# licensed hereunder. You may use the software subject to the license 99796Sprakash.ramrakhyani@arm.com# terms below provided that you ensure that this notice is replicated 109796Sprakash.ramrakhyani@arm.com# unmodified and in its entirety in all distributions of the software, 119796Sprakash.ramrakhyani@arm.com# modified or unmodified, in source code or in binary form. 129796Sprakash.ramrakhyani@arm.com# 139796Sprakash.ramrakhyani@arm.com# Redistribution and use in source and binary forms, with or without 149796Sprakash.ramrakhyani@arm.com# modification, are permitted provided that the following conditions are 159796Sprakash.ramrakhyani@arm.com# met: redistributions of source code must retain the above copyright 169796Sprakash.ramrakhyani@arm.com# notice, this list of conditions and the following disclaimer; 179796Sprakash.ramrakhyani@arm.com# redistributions in binary form must reproduce the above copyright 189796Sprakash.ramrakhyani@arm.com# notice, this list of conditions and the following disclaimer in the 199796Sprakash.ramrakhyani@arm.com# documentation and/or other materials provided with the distribution; 209796Sprakash.ramrakhyani@arm.com# neither the name of the copyright holders nor the names of its 219796Sprakash.ramrakhyani@arm.com# contributors may be used to endorse or promote products derived from 229796Sprakash.ramrakhyani@arm.com# this software without specific prior written permission. 239796Sprakash.ramrakhyani@arm.com# 249796Sprakash.ramrakhyani@arm.com# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 259796Sprakash.ramrakhyani@arm.com# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 269796Sprakash.ramrakhyani@arm.com# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 279796Sprakash.ramrakhyani@arm.com# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 289796Sprakash.ramrakhyani@arm.com# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 299796Sprakash.ramrakhyani@arm.com# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 309796Sprakash.ramrakhyani@arm.com# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 319796Sprakash.ramrakhyani@arm.com# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 329796Sprakash.ramrakhyani@arm.com# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 339796Sprakash.ramrakhyani@arm.com# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 349796Sprakash.ramrakhyani@arm.com# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 359796Sprakash.ramrakhyani@arm.com# 369796Sprakash.ramrakhyani@arm.com# Authors: Prakash Ramrakhyani 379796Sprakash.ramrakhyani@arm.com 389796Sprakash.ramrakhyani@arm.comfrom m5.params import * 399796Sprakash.ramrakhyani@arm.comfrom m5.proxy import * 4013665Sandreas.sandberg@arm.comfrom m5.objects.ClockedObject import ClockedObject 4113665Sandreas.sandberg@arm.comfrom m5.objects.IndexingPolicies import * 429796Sprakash.ramrakhyani@arm.com 439796Sprakash.ramrakhyani@arm.comclass BaseTags(ClockedObject): 449796Sprakash.ramrakhyani@arm.com type = 'BaseTags' 459796Sprakash.ramrakhyani@arm.com abstract = True 469796Sprakash.ramrakhyani@arm.com cxx_header = "mem/cache/tags/base.hh" 4713419Sodanrc@yahoo.com.br 4813419Sodanrc@yahoo.com.br # Get system to which it belongs 4913419Sodanrc@yahoo.com.br system = Param.System(Parent.any, "System we belong to") 5013419Sodanrc@yahoo.com.br 519796Sprakash.ramrakhyani@arm.com # Get the size from the parent (cache) 529796Sprakash.ramrakhyani@arm.com size = Param.MemorySize(Parent.size, "capacity in bytes") 539796Sprakash.ramrakhyani@arm.com 549814Sandreas.hansson@arm.com # Get the block size from the parent (system) 559814Sandreas.hansson@arm.com block_size = Param.Int(Parent.cache_line_size, "block size in bytes") 569796Sprakash.ramrakhyani@arm.com 5711722Ssophiane.senni@gmail.com # Get the tag lookup latency from the parent (cache) 5811722Ssophiane.senni@gmail.com tag_latency = Param.Cycles(Parent.tag_latency, 5911722Ssophiane.senni@gmail.com "The tag lookup latency for this cache") 6011722Ssophiane.senni@gmail.com 6112513Sodanrc@yahoo.com.br # Get the warmup percentage from the parent (cache) 6212513Sodanrc@yahoo.com.br warmup_percentage = Param.Percent(Parent.warmup_percentage, 6312513Sodanrc@yahoo.com.br "Percentage of tags to be touched to warm up the cache") 6412513Sodanrc@yahoo.com.br 6511722Ssophiane.senni@gmail.com sequential_access = Param.Bool(Parent.sequential_access, 6611722Ssophiane.senni@gmail.com "Whether to access tags and data sequentially") 679796Sprakash.ramrakhyani@arm.com 6813219Sodanrc@yahoo.com.br # Get indexing policy 6913219Sodanrc@yahoo.com.br indexing_policy = Param.BaseIndexingPolicy(SetAssociative(), 7013219Sodanrc@yahoo.com.br "Indexing policy") 7113219Sodanrc@yahoo.com.br 7213219Sodanrc@yahoo.com.br # Set the indexing entry size as the block size 7313219Sodanrc@yahoo.com.br entry_size = Param.Int(Parent.cache_line_size, 7413219Sodanrc@yahoo.com.br "Indexing entry size in bytes") 7513219Sodanrc@yahoo.com.br 7610263Satgutier@umich.educlass BaseSetAssoc(BaseTags): 7710263Satgutier@umich.edu type = 'BaseSetAssoc' 7810263Satgutier@umich.edu cxx_header = "mem/cache/tags/base_set_assoc.hh" 7912752Sodanrc@yahoo.com.br 8012752Sodanrc@yahoo.com.br # Get the cache associativity 8110263Satgutier@umich.edu assoc = Param.Int(Parent.assoc, "associativity") 8210263Satgutier@umich.edu 8312600Sodanrc@yahoo.com.br # Get replacement policy from the parent (cache) 8412600Sodanrc@yahoo.com.br replacement_policy = Param.BaseReplacementPolicy( 8512600Sodanrc@yahoo.com.br Parent.replacement_policy, "Replacement policy") 869796Sprakash.ramrakhyani@arm.com 8712752Sodanrc@yahoo.com.brclass SectorTags(BaseTags): 8812752Sodanrc@yahoo.com.br type = 'SectorTags' 8912752Sodanrc@yahoo.com.br cxx_header = "mem/cache/tags/sector_tags.hh" 9012752Sodanrc@yahoo.com.br 9112752Sodanrc@yahoo.com.br # Get the cache associativity 9212752Sodanrc@yahoo.com.br assoc = Param.Int(Parent.assoc, "associativity") 9312752Sodanrc@yahoo.com.br 9412752Sodanrc@yahoo.com.br # Number of sub-sectors (data blocks) per sector 9512752Sodanrc@yahoo.com.br num_blocks_per_sector = Param.Int(1, "Number of sub-sectors per sector"); 9612752Sodanrc@yahoo.com.br 9713219Sodanrc@yahoo.com.br # The indexing entry now is a sector block 9813219Sodanrc@yahoo.com.br entry_size = Parent.cache_line_size * Self.num_blocks_per_sector 9913219Sodanrc@yahoo.com.br 10012752Sodanrc@yahoo.com.br # Get replacement policy from the parent (cache) 10112752Sodanrc@yahoo.com.br replacement_policy = Param.BaseReplacementPolicy( 10212752Sodanrc@yahoo.com.br Parent.replacement_policy, "Replacement policy") 10312752Sodanrc@yahoo.com.br 10413938Sodanrc@yahoo.com.brclass CompressedTags(SectorTags): 10513938Sodanrc@yahoo.com.br type = 'CompressedTags' 10613938Sodanrc@yahoo.com.br cxx_header = "mem/cache/tags/compressed_tags.hh" 10713938Sodanrc@yahoo.com.br 10813938Sodanrc@yahoo.com.br # Maximum number of compressed blocks per tag 10913938Sodanrc@yahoo.com.br max_compression_ratio = Param.Int(2, 11013938Sodanrc@yahoo.com.br "Maximum number of compressed blocks per tag.") 11113938Sodanrc@yahoo.com.br 11213938Sodanrc@yahoo.com.br # We simulate superblock as sector blocks 11313938Sodanrc@yahoo.com.br num_blocks_per_sector = Self.max_compression_ratio 11413938Sodanrc@yahoo.com.br 11513938Sodanrc@yahoo.com.br # We virtually increase the number of data blocks per tag by multiplying 11613938Sodanrc@yahoo.com.br # the cache size by the compression ratio 11713938Sodanrc@yahoo.com.br size = Parent.size * Self.max_compression_ratio 11813938Sodanrc@yahoo.com.br 1199796Sprakash.ramrakhyani@arm.comclass FALRU(BaseTags): 1209796Sprakash.ramrakhyani@arm.com type = 'FALRU' 1219796Sprakash.ramrakhyani@arm.com cxx_class = 'FALRU' 1229796Sprakash.ramrakhyani@arm.com cxx_header = "mem/cache/tags/fa_lru.hh" 12312665Snikos.nikoleris@arm.com 12412665Snikos.nikoleris@arm.com min_tracked_cache_size = Param.MemorySize("128kB", "Minimum cache size for" 12512665Snikos.nikoleris@arm.com " which we track statistics") 12613219Sodanrc@yahoo.com.br 12713219Sodanrc@yahoo.com.br # This tag uses its own embedded indexing 12813219Sodanrc@yahoo.com.br indexing_policy = NULL 129