Prefetcher.py revision 14013
113991Sandreas.sandberg@arm.com# Copyright (c) 2012, 2014, 2019 ARM Limited 29288Sandreas.hansson@arm.com# All rights reserved. 39288Sandreas.hansson@arm.com# 49288Sandreas.hansson@arm.com# The license below extends only to copyright in the software and shall 59288Sandreas.hansson@arm.com# not be construed as granting a license to any other intellectual 69288Sandreas.hansson@arm.com# property including but not limited to intellectual property relating 79288Sandreas.hansson@arm.com# to a hardware implementation of the functionality of the software 89288Sandreas.hansson@arm.com# licensed hereunder. You may use the software subject to the license 99288Sandreas.hansson@arm.com# terms below provided that you ensure that this notice is replicated 109288Sandreas.hansson@arm.com# unmodified and in its entirety in all distributions of the software, 119288Sandreas.hansson@arm.com# modified or unmodified, in source code or in binary form. 129288Sandreas.hansson@arm.com# 139288Sandreas.hansson@arm.com# Copyright (c) 2005 The Regents of The University of Michigan 149288Sandreas.hansson@arm.com# All rights reserved. 159288Sandreas.hansson@arm.com# 169288Sandreas.hansson@arm.com# Redistribution and use in source and binary forms, with or without 179288Sandreas.hansson@arm.com# modification, are permitted provided that the following conditions are 189288Sandreas.hansson@arm.com# met: redistributions of source code must retain the above copyright 199288Sandreas.hansson@arm.com# notice, this list of conditions and the following disclaimer; 209288Sandreas.hansson@arm.com# redistributions in binary form must reproduce the above copyright 219288Sandreas.hansson@arm.com# notice, this list of conditions and the following disclaimer in the 229288Sandreas.hansson@arm.com# documentation and/or other materials provided with the distribution; 239288Sandreas.hansson@arm.com# neither the name of the copyright holders nor the names of its 249288Sandreas.hansson@arm.com# contributors may be used to endorse or promote products derived from 259288Sandreas.hansson@arm.com# this software without specific prior written permission. 269288Sandreas.hansson@arm.com# 279288Sandreas.hansson@arm.com# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 289288Sandreas.hansson@arm.com# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 299288Sandreas.hansson@arm.com# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 309288Sandreas.hansson@arm.com# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 319288Sandreas.hansson@arm.com# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 329288Sandreas.hansson@arm.com# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 339288Sandreas.hansson@arm.com# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 349288Sandreas.hansson@arm.com# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 359288Sandreas.hansson@arm.com# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 369288Sandreas.hansson@arm.com# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 379288Sandreas.hansson@arm.com# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 389288Sandreas.hansson@arm.com# 399288Sandreas.hansson@arm.com# Authors: Ron Dreslinski 4010623Smitch.hayenga@arm.com# Mitch Hayenga 419288Sandreas.hansson@arm.com 4213416Sjavier.bueno@metempsy.comfrom m5.SimObject import * 438831Smrinmoy.ghosh@arm.comfrom m5.params import * 448832SAli.Saidi@ARM.comfrom m5.proxy import * 4513665Sandreas.sandberg@arm.com 4613665Sandreas.sandberg@arm.comfrom m5.objects.ClockedObject import ClockedObject 4713665Sandreas.sandberg@arm.comfrom m5.objects.IndexingPolicies import * 4813665Sandreas.sandberg@arm.comfrom m5.objects.ReplacementPolicies import * 498832SAli.Saidi@ARM.com 5013416Sjavier.bueno@metempsy.comclass HWPProbeEvent(object): 5113416Sjavier.bueno@metempsy.com def __init__(self, prefetcher, obj, *listOfNames): 5213416Sjavier.bueno@metempsy.com self.obj = obj 5313416Sjavier.bueno@metempsy.com self.prefetcher = prefetcher 5413416Sjavier.bueno@metempsy.com self.names = listOfNames 5513416Sjavier.bueno@metempsy.com 5613416Sjavier.bueno@metempsy.com def register(self): 5713416Sjavier.bueno@metempsy.com if self.obj: 5813416Sjavier.bueno@metempsy.com for name in self.names: 5913416Sjavier.bueno@metempsy.com self.prefetcher.getCCObject().addEventProbe( 6013416Sjavier.bueno@metempsy.com self.obj.getCCObject(), name) 6113416Sjavier.bueno@metempsy.com 629288Sandreas.hansson@arm.comclass BasePrefetcher(ClockedObject): 638831Smrinmoy.ghosh@arm.com type = 'BasePrefetcher' 648831Smrinmoy.ghosh@arm.com abstract = True 659338SAndreas.Sandberg@arm.com cxx_header = "mem/cache/prefetch/base.hh" 6613416Sjavier.bueno@metempsy.com cxx_exports = [ 6713416Sjavier.bueno@metempsy.com PyBindMethod("addEventProbe"), 6814013Sjavier.bueno@metempsy.com PyBindMethod("addTLB"), 6913416Sjavier.bueno@metempsy.com ] 7010466Sandreas.hansson@arm.com sys = Param.System(Parent.any, "System this prefetcher belongs to") 718831Smrinmoy.ghosh@arm.com 7213422Sodanrc@yahoo.com.br # Get the block size from the parent (system) 7313422Sodanrc@yahoo.com.br block_size = Param.Int(Parent.cache_line_size, "Block size in bytes") 7413422Sodanrc@yahoo.com.br 7510623Smitch.hayenga@arm.com on_miss = Param.Bool(False, "Only notify prefetcher on misses") 7610623Smitch.hayenga@arm.com on_read = Param.Bool(True, "Notify prefetcher on reads") 7710623Smitch.hayenga@arm.com on_write = Param.Bool(True, "Notify prefetcher on writes") 7810623Smitch.hayenga@arm.com on_data = Param.Bool(True, "Notify prefetcher on data accesses") 7910623Smitch.hayenga@arm.com on_inst = Param.Bool(True, "Notify prefetcher on instruction accesses") 8013416Sjavier.bueno@metempsy.com prefetch_on_access = Param.Bool(Parent.prefetch_on_access, 8113416Sjavier.bueno@metempsy.com "Notify the hardware prefetcher on every access (not just misses)") 8213551Sjavier.bueno@metempsy.com use_virtual_addresses = Param.Bool(False, 8313551Sjavier.bueno@metempsy.com "Use virtual addresses for prefetching") 8413416Sjavier.bueno@metempsy.com 8513416Sjavier.bueno@metempsy.com _events = [] 8613416Sjavier.bueno@metempsy.com def addEvent(self, newObject): 8713416Sjavier.bueno@metempsy.com self._events.append(newObject) 8813416Sjavier.bueno@metempsy.com 8913416Sjavier.bueno@metempsy.com # Override the normal SimObject::regProbeListeners method and 9013416Sjavier.bueno@metempsy.com # register deferred event handlers. 9113416Sjavier.bueno@metempsy.com def regProbeListeners(self): 9214013Sjavier.bueno@metempsy.com for tlb in self._tlbs: 9314013Sjavier.bueno@metempsy.com self.getCCObject().addTLB(tlb.getCCObject()) 9413416Sjavier.bueno@metempsy.com for event in self._events: 9513416Sjavier.bueno@metempsy.com event.register() 9613416Sjavier.bueno@metempsy.com self.getCCObject().regProbeListeners() 9713416Sjavier.bueno@metempsy.com 9813416Sjavier.bueno@metempsy.com def listenFromProbe(self, simObj, *probeNames): 9913416Sjavier.bueno@metempsy.com if not isinstance(simObj, SimObject): 10013416Sjavier.bueno@metempsy.com raise TypeError("argument must be of SimObject type") 10113416Sjavier.bueno@metempsy.com if len(probeNames) <= 0: 10213416Sjavier.bueno@metempsy.com raise TypeError("probeNames must have at least one element") 10313416Sjavier.bueno@metempsy.com self.addEvent(HWPProbeEvent(self, simObj, *probeNames)) 10414013Sjavier.bueno@metempsy.com _tlbs = [] 10514013Sjavier.bueno@metempsy.com def registerTLB(self, simObj): 10614013Sjavier.bueno@metempsy.com if not isinstance(simObj, SimObject): 10714013Sjavier.bueno@metempsy.com raise TypeError("argument must be a SimObject type") 10814013Sjavier.bueno@metempsy.com self._tlbs.append(simObj) 10910623Smitch.hayenga@arm.com 11013991Sandreas.sandberg@arm.comclass MultiPrefetcher(BasePrefetcher): 11113991Sandreas.sandberg@arm.com type = 'MultiPrefetcher' 11213991Sandreas.sandberg@arm.com cxx_class = 'MultiPrefetcher' 11313991Sandreas.sandberg@arm.com cxx_header = 'mem/cache/prefetch/multi.hh' 11413991Sandreas.sandberg@arm.com 11513991Sandreas.sandberg@arm.com prefetchers = VectorParam.BasePrefetcher([], "Array of prefetchers") 11613991Sandreas.sandberg@arm.com 11710623Smitch.hayenga@arm.comclass QueuedPrefetcher(BasePrefetcher): 11810623Smitch.hayenga@arm.com type = "QueuedPrefetcher" 11910623Smitch.hayenga@arm.com abstract = True 12010623Smitch.hayenga@arm.com cxx_class = "QueuedPrefetcher" 12110623Smitch.hayenga@arm.com cxx_header = "mem/cache/prefetch/queued.hh" 12210623Smitch.hayenga@arm.com latency = Param.Int(1, "Latency for generated prefetches") 12310623Smitch.hayenga@arm.com queue_size = Param.Int(32, "Maximum number of queued prefetches") 12414013Sjavier.bueno@metempsy.com max_prefetch_requests_with_pending_translation = Param.Int(32, 12514013Sjavier.bueno@metempsy.com "Maximum number of queued prefetches that have a missing translation") 12610623Smitch.hayenga@arm.com queue_squash = Param.Bool(True, "Squash queued prefetch on demand access") 12710623Smitch.hayenga@arm.com queue_filter = Param.Bool(True, "Don't queue redundant prefetches") 12810623Smitch.hayenga@arm.com cache_snoop = Param.Bool(False, "Snoop cache to eliminate redundant request") 12910623Smitch.hayenga@arm.com 13010623Smitch.hayenga@arm.com tag_prefetch = Param.Bool(True, "Tag prefetch with PC of generating access") 13110623Smitch.hayenga@arm.com 13210623Smitch.hayenga@arm.comclass StridePrefetcher(QueuedPrefetcher): 1338831Smrinmoy.ghosh@arm.com type = 'StridePrefetcher' 1348831Smrinmoy.ghosh@arm.com cxx_class = 'StridePrefetcher' 1359338SAndreas.Sandberg@arm.com cxx_header = "mem/cache/prefetch/stride.hh" 1368831Smrinmoy.ghosh@arm.com 13713422Sodanrc@yahoo.com.br # Do not consult stride prefetcher on instruction accesses 13813422Sodanrc@yahoo.com.br on_inst = False 13913422Sodanrc@yahoo.com.br 14010623Smitch.hayenga@arm.com max_conf = Param.Int(7, "Maximum confidence level") 14110623Smitch.hayenga@arm.com thresh_conf = Param.Int(4, "Threshold confidence level") 14210623Smitch.hayenga@arm.com min_conf = Param.Int(0, "Minimum confidence level") 14310623Smitch.hayenga@arm.com start_conf = Param.Int(4, "Starting confidence for new entries") 14410623Smitch.hayenga@arm.com 14510623Smitch.hayenga@arm.com table_sets = Param.Int(16, "Number of sets in PC lookup table") 14610623Smitch.hayenga@arm.com table_assoc = Param.Int(4, "Associativity of PC lookup table") 14710623Smitch.hayenga@arm.com use_master_id = Param.Bool(True, "Use master id based history") 14810623Smitch.hayenga@arm.com 14910623Smitch.hayenga@arm.com degree = Param.Int(4, "Number of prefetches to generate") 15010623Smitch.hayenga@arm.com 15113427Sodanrc@yahoo.com.br # Get replacement policy 15213427Sodanrc@yahoo.com.br replacement_policy = Param.BaseReplacementPolicy(RandomRP(), 15313427Sodanrc@yahoo.com.br "Replacement policy") 15413427Sodanrc@yahoo.com.br 15510623Smitch.hayenga@arm.comclass TaggedPrefetcher(QueuedPrefetcher): 1568831Smrinmoy.ghosh@arm.com type = 'TaggedPrefetcher' 1578831Smrinmoy.ghosh@arm.com cxx_class = 'TaggedPrefetcher' 1589338SAndreas.Sandberg@arm.com cxx_header = "mem/cache/prefetch/tagged.hh" 1598831Smrinmoy.ghosh@arm.com 16010623Smitch.hayenga@arm.com degree = Param.Int(2, "Number of prefetches to generate") 16113553Sjavier.bueno@metempsy.com 16213772Sjavier.bueno@metempsy.comclass IndirectMemoryPrefetcher(QueuedPrefetcher): 16313772Sjavier.bueno@metempsy.com type = 'IndirectMemoryPrefetcher' 16413772Sjavier.bueno@metempsy.com cxx_class = 'IndirectMemoryPrefetcher' 16513772Sjavier.bueno@metempsy.com cxx_header = "mem/cache/prefetch/indirect_memory.hh" 16613772Sjavier.bueno@metempsy.com pt_table_entries = Param.MemorySize("16", 16713772Sjavier.bueno@metempsy.com "Number of entries of the Prefetch Table") 16813772Sjavier.bueno@metempsy.com pt_table_assoc = Param.Unsigned(16, "Associativity of the Prefetch Table") 16913772Sjavier.bueno@metempsy.com pt_table_indexing_policy = Param.BaseIndexingPolicy( 17013772Sjavier.bueno@metempsy.com SetAssociative(entry_size = 1, assoc = Parent.pt_table_assoc, 17113772Sjavier.bueno@metempsy.com size = Parent.pt_table_entries), 17213772Sjavier.bueno@metempsy.com "Indexing policy of the pattern table") 17313772Sjavier.bueno@metempsy.com pt_table_replacement_policy = Param.BaseReplacementPolicy(LRURP(), 17413772Sjavier.bueno@metempsy.com "Replacement policy of the pattern table") 17513772Sjavier.bueno@metempsy.com max_prefetch_distance = Param.Unsigned(16, "Maximum prefetch distance") 17613963Sodanrc@yahoo.com.br num_indirect_counter_bits = Param.Unsigned(3, 17713963Sodanrc@yahoo.com.br "Number of bits of the indirect counter") 17813772Sjavier.bueno@metempsy.com ipd_table_entries = Param.MemorySize("4", 17913772Sjavier.bueno@metempsy.com "Number of entries of the Indirect Pattern Detector") 18013772Sjavier.bueno@metempsy.com ipd_table_assoc = Param.Unsigned(4, 18113772Sjavier.bueno@metempsy.com "Associativity of the Indirect Pattern Detector") 18213772Sjavier.bueno@metempsy.com ipd_table_indexing_policy = Param.BaseIndexingPolicy( 18313772Sjavier.bueno@metempsy.com SetAssociative(entry_size = 1, assoc = Parent.ipd_table_assoc, 18413772Sjavier.bueno@metempsy.com size = Parent.ipd_table_entries), 18513772Sjavier.bueno@metempsy.com "Indexing policy of the Indirect Pattern Detector") 18613772Sjavier.bueno@metempsy.com ipd_table_replacement_policy = Param.BaseReplacementPolicy(LRURP(), 18713772Sjavier.bueno@metempsy.com "Replacement policy of the Indirect Pattern Detector") 18813772Sjavier.bueno@metempsy.com shift_values = VectorParam.Int([2, 3, 4, -3], "Shift values to evaluate") 18913772Sjavier.bueno@metempsy.com addr_array_len = Param.Unsigned(4, "Number of misses tracked") 19013772Sjavier.bueno@metempsy.com prefetch_threshold = Param.Unsigned(2, 19113772Sjavier.bueno@metempsy.com "Counter threshold to start the indirect prefetching") 19213772Sjavier.bueno@metempsy.com stream_counter_threshold = Param.Unsigned(4, 19313772Sjavier.bueno@metempsy.com "Counter threshold to enable the stream prefetcher") 19413772Sjavier.bueno@metempsy.com streaming_distance = Param.Unsigned(4, 19513772Sjavier.bueno@metempsy.com "Number of prefetches to generate when using the stream prefetcher") 19613772Sjavier.bueno@metempsy.com 19713553Sjavier.bueno@metempsy.comclass SignaturePathPrefetcher(QueuedPrefetcher): 19813553Sjavier.bueno@metempsy.com type = 'SignaturePathPrefetcher' 19913553Sjavier.bueno@metempsy.com cxx_class = 'SignaturePathPrefetcher' 20013553Sjavier.bueno@metempsy.com cxx_header = "mem/cache/prefetch/signature_path.hh" 20113553Sjavier.bueno@metempsy.com 20213553Sjavier.bueno@metempsy.com signature_shift = Param.UInt8(3, 20313553Sjavier.bueno@metempsy.com "Number of bits to shift when calculating a new signature"); 20413553Sjavier.bueno@metempsy.com signature_bits = Param.UInt16(12, 20513553Sjavier.bueno@metempsy.com "Size of the signature, in bits"); 20613553Sjavier.bueno@metempsy.com signature_table_entries = Param.MemorySize("1024", 20713553Sjavier.bueno@metempsy.com "Number of entries of the signature table") 20813553Sjavier.bueno@metempsy.com signature_table_assoc = Param.Unsigned(2, 20913553Sjavier.bueno@metempsy.com "Associativity of the signature table") 21013553Sjavier.bueno@metempsy.com signature_table_indexing_policy = Param.BaseIndexingPolicy( 21113553Sjavier.bueno@metempsy.com SetAssociative(entry_size = 1, assoc = Parent.signature_table_assoc, 21213553Sjavier.bueno@metempsy.com size = Parent.signature_table_entries), 21313553Sjavier.bueno@metempsy.com "Indexing policy of the signature table") 21413553Sjavier.bueno@metempsy.com signature_table_replacement_policy = Param.BaseReplacementPolicy(LRURP(), 21513553Sjavier.bueno@metempsy.com "Replacement policy of the signature table") 21613553Sjavier.bueno@metempsy.com 21713963Sodanrc@yahoo.com.br num_counter_bits = Param.UInt8(3, 21813963Sodanrc@yahoo.com.br "Number of bits of the saturating counters") 21913553Sjavier.bueno@metempsy.com pattern_table_entries = Param.MemorySize("4096", 22013553Sjavier.bueno@metempsy.com "Number of entries of the pattern table") 22113553Sjavier.bueno@metempsy.com pattern_table_assoc = Param.Unsigned(1, 22213553Sjavier.bueno@metempsy.com "Associativity of the pattern table") 22313553Sjavier.bueno@metempsy.com strides_per_pattern_entry = Param.Unsigned(4, 22413553Sjavier.bueno@metempsy.com "Number of strides stored in each pattern entry") 22513553Sjavier.bueno@metempsy.com pattern_table_indexing_policy = Param.BaseIndexingPolicy( 22613553Sjavier.bueno@metempsy.com SetAssociative(entry_size = 1, assoc = Parent.pattern_table_assoc, 22713553Sjavier.bueno@metempsy.com size = Parent.pattern_table_entries), 22813553Sjavier.bueno@metempsy.com "Indexing policy of the pattern table") 22913553Sjavier.bueno@metempsy.com pattern_table_replacement_policy = Param.BaseReplacementPolicy(LRURP(), 23013553Sjavier.bueno@metempsy.com "Replacement policy of the pattern table") 23113553Sjavier.bueno@metempsy.com 23213553Sjavier.bueno@metempsy.com prefetch_confidence_threshold = Param.Float(0.5, 23313553Sjavier.bueno@metempsy.com "Minimum confidence to issue prefetches") 23413553Sjavier.bueno@metempsy.com lookahead_confidence_threshold = Param.Float(0.75, 23513553Sjavier.bueno@metempsy.com "Minimum confidence to continue exploring lookahead entries") 23613554Sjavier.bueno@metempsy.com 23713624Sjavier.bueno@metempsy.comclass SignaturePathPrefetcherV2(SignaturePathPrefetcher): 23813624Sjavier.bueno@metempsy.com type = 'SignaturePathPrefetcherV2' 23913624Sjavier.bueno@metempsy.com cxx_class = 'SignaturePathPrefetcherV2' 24013624Sjavier.bueno@metempsy.com cxx_header = "mem/cache/prefetch/signature_path_v2.hh" 24113624Sjavier.bueno@metempsy.com 24213624Sjavier.bueno@metempsy.com signature_table_entries = "256" 24313624Sjavier.bueno@metempsy.com signature_table_assoc = 1 24413624Sjavier.bueno@metempsy.com pattern_table_entries = "512" 24513624Sjavier.bueno@metempsy.com pattern_table_assoc = 1 24613963Sodanrc@yahoo.com.br num_counter_bits = 4 24713624Sjavier.bueno@metempsy.com prefetch_confidence_threshold = 0.25 24813624Sjavier.bueno@metempsy.com lookahead_confidence_threshold = 0.25 24913624Sjavier.bueno@metempsy.com 25013624Sjavier.bueno@metempsy.com global_history_register_entries = Param.MemorySize("8", 25113624Sjavier.bueno@metempsy.com "Number of entries of global history register") 25213624Sjavier.bueno@metempsy.com global_history_register_indexing_policy = Param.BaseIndexingPolicy( 25313624Sjavier.bueno@metempsy.com SetAssociative(entry_size = 1, 25413624Sjavier.bueno@metempsy.com assoc = Parent.global_history_register_entries, 25513624Sjavier.bueno@metempsy.com size = Parent.global_history_register_entries), 25613624Sjavier.bueno@metempsy.com "Indexing policy of the global history register") 25713624Sjavier.bueno@metempsy.com global_history_register_replacement_policy = Param.BaseReplacementPolicy( 25813624Sjavier.bueno@metempsy.com LRURP(), "Replacement policy of the global history register") 25913624Sjavier.bueno@metempsy.com 26013700Sjavier.bueno@metempsy.comclass AccessMapPatternMatching(ClockedObject): 26113700Sjavier.bueno@metempsy.com type = 'AccessMapPatternMatching' 26213700Sjavier.bueno@metempsy.com cxx_class = 'AccessMapPatternMatching' 26313554Sjavier.bueno@metempsy.com cxx_header = "mem/cache/prefetch/access_map_pattern_matching.hh" 26413554Sjavier.bueno@metempsy.com 26513700Sjavier.bueno@metempsy.com block_size = Param.Unsigned(Parent.block_size, 26613700Sjavier.bueno@metempsy.com "Cacheline size used by the prefetcher using this object") 26713700Sjavier.bueno@metempsy.com 26813700Sjavier.bueno@metempsy.com limit_stride = Param.Unsigned(0, 26913700Sjavier.bueno@metempsy.com "Limit the strides checked up to -X/X, if 0, disable the limit") 27013554Sjavier.bueno@metempsy.com start_degree = Param.Unsigned(4, 27113554Sjavier.bueno@metempsy.com "Initial degree (Maximum number of prefetches generated") 27213554Sjavier.bueno@metempsy.com hot_zone_size = Param.MemorySize("2kB", "Memory covered by a hot zone") 27313554Sjavier.bueno@metempsy.com access_map_table_entries = Param.MemorySize("256", 27413554Sjavier.bueno@metempsy.com "Number of entries in the access map table") 27513554Sjavier.bueno@metempsy.com access_map_table_assoc = Param.Unsigned(8, 27613554Sjavier.bueno@metempsy.com "Associativity of the access map table") 27713554Sjavier.bueno@metempsy.com access_map_table_indexing_policy = Param.BaseIndexingPolicy( 27813554Sjavier.bueno@metempsy.com SetAssociative(entry_size = 1, assoc = Parent.access_map_table_assoc, 27913554Sjavier.bueno@metempsy.com size = Parent.access_map_table_entries), 28013554Sjavier.bueno@metempsy.com "Indexing policy of the access map table") 28113554Sjavier.bueno@metempsy.com access_map_table_replacement_policy = Param.BaseReplacementPolicy(LRURP(), 28213554Sjavier.bueno@metempsy.com "Replacement policy of the access map table") 28313554Sjavier.bueno@metempsy.com high_coverage_threshold = Param.Float(0.25, 28413554Sjavier.bueno@metempsy.com "A prefetch coverage factor bigger than this is considered high") 28513554Sjavier.bueno@metempsy.com low_coverage_threshold = Param.Float(0.125, 28613554Sjavier.bueno@metempsy.com "A prefetch coverage factor smaller than this is considered low") 28713554Sjavier.bueno@metempsy.com high_accuracy_threshold = Param.Float(0.5, 28813554Sjavier.bueno@metempsy.com "A prefetch accuracy factor bigger than this is considered high") 28913554Sjavier.bueno@metempsy.com low_accuracy_threshold = Param.Float(0.25, 29013554Sjavier.bueno@metempsy.com "A prefetch accuracy factor smaller than this is considered low") 29113554Sjavier.bueno@metempsy.com high_cache_hit_threshold = Param.Float(0.875, 29213554Sjavier.bueno@metempsy.com "A cache hit ratio bigger than this is considered high") 29313554Sjavier.bueno@metempsy.com low_cache_hit_threshold = Param.Float(0.75, 29413554Sjavier.bueno@metempsy.com "A cache hit ratio smaller than this is considered low") 29513554Sjavier.bueno@metempsy.com epoch_cycles = Param.Cycles(256000, "Cycles in an epoch period") 29613554Sjavier.bueno@metempsy.com offchip_memory_latency = Param.Latency("30ns", 29713554Sjavier.bueno@metempsy.com "Memory latency used to compute the required memory bandwidth") 29813667Sjavier.bueno@metempsy.com 29913700Sjavier.bueno@metempsy.comclass AMPMPrefetcher(QueuedPrefetcher): 30013700Sjavier.bueno@metempsy.com type = 'AMPMPrefetcher' 30113700Sjavier.bueno@metempsy.com cxx_class = 'AMPMPrefetcher' 30213700Sjavier.bueno@metempsy.com cxx_header = "mem/cache/prefetch/access_map_pattern_matching.hh" 30313700Sjavier.bueno@metempsy.com ampm = Param.AccessMapPatternMatching( AccessMapPatternMatching(), 30413700Sjavier.bueno@metempsy.com "Access Map Pattern Matching object") 30513700Sjavier.bueno@metempsy.com 30613667Sjavier.bueno@metempsy.comclass DeltaCorrelatingPredictionTables(SimObject): 30713667Sjavier.bueno@metempsy.com type = 'DeltaCorrelatingPredictionTables' 30813667Sjavier.bueno@metempsy.com cxx_class = 'DeltaCorrelatingPredictionTables' 30913667Sjavier.bueno@metempsy.com cxx_header = "mem/cache/prefetch/delta_correlating_prediction_tables.hh" 31013667Sjavier.bueno@metempsy.com deltas_per_entry = Param.Unsigned(20, 31113667Sjavier.bueno@metempsy.com "Number of deltas stored in each table entry") 31213667Sjavier.bueno@metempsy.com delta_bits = Param.Unsigned(12, "Bits per delta") 31313667Sjavier.bueno@metempsy.com delta_mask_bits = Param.Unsigned(8, 31413667Sjavier.bueno@metempsy.com "Lower bits to mask when comparing deltas") 31513667Sjavier.bueno@metempsy.com table_entries = Param.MemorySize("128", 31613667Sjavier.bueno@metempsy.com "Number of entries in the table") 31713667Sjavier.bueno@metempsy.com table_assoc = Param.Unsigned(128, 31813667Sjavier.bueno@metempsy.com "Associativity of the table") 31913667Sjavier.bueno@metempsy.com table_indexing_policy = Param.BaseIndexingPolicy( 32013667Sjavier.bueno@metempsy.com SetAssociative(entry_size = 1, assoc = Parent.table_assoc, 32113667Sjavier.bueno@metempsy.com size = Parent.table_entries), 32213667Sjavier.bueno@metempsy.com "Indexing policy of the table") 32313667Sjavier.bueno@metempsy.com table_replacement_policy = Param.BaseReplacementPolicy(LRURP(), 32413667Sjavier.bueno@metempsy.com "Replacement policy of the table") 32513667Sjavier.bueno@metempsy.com 32613667Sjavier.bueno@metempsy.comclass DCPTPrefetcher(QueuedPrefetcher): 32713667Sjavier.bueno@metempsy.com type = 'DCPTPrefetcher' 32813667Sjavier.bueno@metempsy.com cxx_class = 'DCPTPrefetcher' 32913667Sjavier.bueno@metempsy.com cxx_header = "mem/cache/prefetch/delta_correlating_prediction_tables.hh" 33013667Sjavier.bueno@metempsy.com dcpt = Param.DeltaCorrelatingPredictionTables( 33113667Sjavier.bueno@metempsy.com DeltaCorrelatingPredictionTables(), 33213667Sjavier.bueno@metempsy.com "Delta Correlating Prediction Tables object") 33313667Sjavier.bueno@metempsy.com 33413669Sjavier.bueno@metempsy.comclass IrregularStreamBufferPrefetcher(QueuedPrefetcher): 33513669Sjavier.bueno@metempsy.com type = "IrregularStreamBufferPrefetcher" 33613669Sjavier.bueno@metempsy.com cxx_class = "IrregularStreamBufferPrefetcher" 33713669Sjavier.bueno@metempsy.com cxx_header = "mem/cache/prefetch/irregular_stream_buffer.hh" 33813669Sjavier.bueno@metempsy.com 33913963Sodanrc@yahoo.com.br num_counter_bits = Param.Unsigned(2, 34013963Sodanrc@yahoo.com.br "Number of bits of the confidence counter") 34113669Sjavier.bueno@metempsy.com chunk_size = Param.Unsigned(256, 34213669Sjavier.bueno@metempsy.com "Maximum number of addresses in a temporal stream") 34313669Sjavier.bueno@metempsy.com degree = Param.Unsigned(4, "Number of prefetches to generate") 34413669Sjavier.bueno@metempsy.com training_unit_assoc = Param.Unsigned(128, 34513669Sjavier.bueno@metempsy.com "Associativity of the training unit") 34613669Sjavier.bueno@metempsy.com training_unit_entries = Param.MemorySize("128", 34713669Sjavier.bueno@metempsy.com "Number of entries of the training unit") 34813669Sjavier.bueno@metempsy.com training_unit_indexing_policy = Param.BaseIndexingPolicy( 34913669Sjavier.bueno@metempsy.com SetAssociative(entry_size = 1, assoc = Parent.training_unit_assoc, 35013669Sjavier.bueno@metempsy.com size = Parent.training_unit_entries), 35113669Sjavier.bueno@metempsy.com "Indexing policy of the training unit") 35213669Sjavier.bueno@metempsy.com training_unit_replacement_policy = Param.BaseReplacementPolicy(LRURP(), 35313669Sjavier.bueno@metempsy.com "Replacement policy of the training unit") 35413669Sjavier.bueno@metempsy.com 35513669Sjavier.bueno@metempsy.com prefetch_candidates_per_entry = Param.Unsigned(16, 35613669Sjavier.bueno@metempsy.com "Number of prefetch candidates stored in a SP-AMC entry") 35713669Sjavier.bueno@metempsy.com address_map_cache_assoc = Param.Unsigned(128, 35813669Sjavier.bueno@metempsy.com "Associativity of the PS/SP AMCs") 35913669Sjavier.bueno@metempsy.com address_map_cache_entries = Param.MemorySize("128", 36013669Sjavier.bueno@metempsy.com "Number of entries of the PS/SP AMCs") 36113669Sjavier.bueno@metempsy.com ps_address_map_cache_indexing_policy = Param.BaseIndexingPolicy( 36213669Sjavier.bueno@metempsy.com SetAssociative(entry_size = 1, 36313669Sjavier.bueno@metempsy.com assoc = Parent.address_map_cache_assoc, 36413669Sjavier.bueno@metempsy.com size = Parent.address_map_cache_entries), 36513669Sjavier.bueno@metempsy.com "Indexing policy of the Physical-to-Structural Address Map Cache") 36613669Sjavier.bueno@metempsy.com ps_address_map_cache_replacement_policy = Param.BaseReplacementPolicy( 36713669Sjavier.bueno@metempsy.com LRURP(), 36813669Sjavier.bueno@metempsy.com "Replacement policy of the Physical-to-Structural Address Map Cache") 36913669Sjavier.bueno@metempsy.com sp_address_map_cache_indexing_policy = Param.BaseIndexingPolicy( 37013669Sjavier.bueno@metempsy.com SetAssociative(entry_size = 1, 37113669Sjavier.bueno@metempsy.com assoc = Parent.address_map_cache_assoc, 37213669Sjavier.bueno@metempsy.com size = Parent.address_map_cache_entries), 37313669Sjavier.bueno@metempsy.com "Indexing policy of the Structural-to-Physical Address Mao Cache") 37413669Sjavier.bueno@metempsy.com sp_address_map_cache_replacement_policy = Param.BaseReplacementPolicy( 37513669Sjavier.bueno@metempsy.com LRURP(), 37613669Sjavier.bueno@metempsy.com "Replacement policy of the Structural-to-Physical Address Map Cache") 37713700Sjavier.bueno@metempsy.com 37813700Sjavier.bueno@metempsy.comclass SlimAccessMapPatternMatching(AccessMapPatternMatching): 37913700Sjavier.bueno@metempsy.com start_degree = 2 38013700Sjavier.bueno@metempsy.com limit_stride = 4 38113700Sjavier.bueno@metempsy.com 38213700Sjavier.bueno@metempsy.comclass SlimDeltaCorrelatingPredictionTables(DeltaCorrelatingPredictionTables): 38313700Sjavier.bueno@metempsy.com table_entries = "256" 38413700Sjavier.bueno@metempsy.com table_assoc = 256 38513700Sjavier.bueno@metempsy.com deltas_per_entry = 9 38613700Sjavier.bueno@metempsy.com 38713700Sjavier.bueno@metempsy.comclass SlimAMPMPrefetcher(QueuedPrefetcher): 38813700Sjavier.bueno@metempsy.com type = 'SlimAMPMPrefetcher' 38913700Sjavier.bueno@metempsy.com cxx_class = 'SlimAMPMPrefetcher' 39013700Sjavier.bueno@metempsy.com cxx_header = "mem/cache/prefetch/slim_ampm.hh" 39113700Sjavier.bueno@metempsy.com 39213700Sjavier.bueno@metempsy.com ampm = Param.AccessMapPatternMatching(SlimAccessMapPatternMatching(), 39313700Sjavier.bueno@metempsy.com "Access Map Pattern Matching object") 39413700Sjavier.bueno@metempsy.com dcpt = Param.DeltaCorrelatingPredictionTables( 39513700Sjavier.bueno@metempsy.com SlimDeltaCorrelatingPredictionTables(), 39613700Sjavier.bueno@metempsy.com "Delta Correlating Prediction Tables object") 39713717Sivan.pizarro@metempsy.com 39813717Sivan.pizarro@metempsy.comclass BOPPrefetcher(QueuedPrefetcher): 39913717Sivan.pizarro@metempsy.com type = "BOPPrefetcher" 40013717Sivan.pizarro@metempsy.com cxx_class = "BOPPrefetcher" 40113717Sivan.pizarro@metempsy.com cxx_header = "mem/cache/prefetch/bop.hh" 40213717Sivan.pizarro@metempsy.com score_max = Param.Unsigned(31, "Max. score to update the best offset") 40313717Sivan.pizarro@metempsy.com round_max = Param.Unsigned(100, "Max. round to update the best offset") 40413717Sivan.pizarro@metempsy.com bad_score = Param.Unsigned(10, "Score at which the HWP is disabled") 40513717Sivan.pizarro@metempsy.com rr_size = Param.Unsigned(64, "Number of entries of each RR bank") 40613717Sivan.pizarro@metempsy.com tag_bits = Param.Unsigned(12, "Bits used to store the tag") 40713717Sivan.pizarro@metempsy.com offset_list_size = Param.Unsigned(46, 40813717Sivan.pizarro@metempsy.com "Number of entries in the offsets list") 40913717Sivan.pizarro@metempsy.com negative_offsets_enable = Param.Bool(True, 41013717Sivan.pizarro@metempsy.com "Initialize the offsets list also with negative values \ 41113717Sivan.pizarro@metempsy.com (i.e. the table will have half of the entries with positive \ 41213717Sivan.pizarro@metempsy.com offsets and the other half with negative ones)") 41313717Sivan.pizarro@metempsy.com delay_queue_enable = Param.Bool(True, "Enable the delay queue") 41413717Sivan.pizarro@metempsy.com delay_queue_size = Param.Unsigned(15, 41513717Sivan.pizarro@metempsy.com "Number of entries in the delay queue") 41613717Sivan.pizarro@metempsy.com delay_queue_cycles = Param.Cycles(60, 41713717Sivan.pizarro@metempsy.com "Cycles to delay a write in the left RR table from the delay \ 41813717Sivan.pizarro@metempsy.com queue") 41913735Sivan.pizarro@metempsy.com 42013735Sivan.pizarro@metempsy.comclass SBOOEPrefetcher(QueuedPrefetcher): 42113735Sivan.pizarro@metempsy.com type = 'SBOOEPrefetcher' 42213735Sivan.pizarro@metempsy.com cxx_class = 'SBOOEPrefetcher' 42313735Sivan.pizarro@metempsy.com cxx_header = "mem/cache/prefetch/sbooe.hh" 42413735Sivan.pizarro@metempsy.com latency_buffer_size = Param.Int(32, "Entries in the latency buffer") 42513735Sivan.pizarro@metempsy.com sequential_prefetchers = Param.Int(9, "Number of sequential prefetchers") 42613735Sivan.pizarro@metempsy.com sandbox_entries = Param.Int(1024, "Size of the address buffer") 42713735Sivan.pizarro@metempsy.com score_threshold_pct = Param.Percent(25, "Min. threshold to issue a \ 42813735Sivan.pizarro@metempsy.com prefetch. The value is the percentage of sandbox entries to use") 42913786Sjavier.bueno@metempsy.com 43013786Sjavier.bueno@metempsy.comclass STeMSPrefetcher(QueuedPrefetcher): 43113786Sjavier.bueno@metempsy.com type = "STeMSPrefetcher" 43213786Sjavier.bueno@metempsy.com cxx_class = "STeMSPrefetcher" 43313786Sjavier.bueno@metempsy.com cxx_header = "mem/cache/prefetch/spatio_temporal_memory_streaming.hh" 43413786Sjavier.bueno@metempsy.com 43513786Sjavier.bueno@metempsy.com spatial_region_size = Param.MemorySize("2kB", 43613786Sjavier.bueno@metempsy.com "Memory covered by a hot zone") 43713786Sjavier.bueno@metempsy.com active_generation_table_entries = Param.MemorySize("64", 43813786Sjavier.bueno@metempsy.com "Number of entries in the active generation table") 43913786Sjavier.bueno@metempsy.com active_generation_table_assoc = Param.Unsigned(64, 44013786Sjavier.bueno@metempsy.com "Associativity of the active generation table") 44113786Sjavier.bueno@metempsy.com active_generation_table_indexing_policy = Param.BaseIndexingPolicy( 44213786Sjavier.bueno@metempsy.com SetAssociative(entry_size = 1, 44313786Sjavier.bueno@metempsy.com assoc = Parent.active_generation_table_assoc, 44413786Sjavier.bueno@metempsy.com size = Parent.active_generation_table_entries), 44513786Sjavier.bueno@metempsy.com "Indexing policy of the active generation table") 44613786Sjavier.bueno@metempsy.com active_generation_table_replacement_policy = Param.BaseReplacementPolicy( 44713786Sjavier.bueno@metempsy.com LRURP(), "Replacement policy of the active generation table") 44813786Sjavier.bueno@metempsy.com 44913786Sjavier.bueno@metempsy.com pattern_sequence_table_entries = Param.MemorySize("16384", 45013786Sjavier.bueno@metempsy.com "Number of entries in the pattern sequence table") 45113786Sjavier.bueno@metempsy.com pattern_sequence_table_assoc = Param.Unsigned(16384, 45213786Sjavier.bueno@metempsy.com "Associativity of the pattern sequence table") 45313786Sjavier.bueno@metempsy.com pattern_sequence_table_indexing_policy = Param.BaseIndexingPolicy( 45413786Sjavier.bueno@metempsy.com SetAssociative(entry_size = 1, 45513786Sjavier.bueno@metempsy.com assoc = Parent.pattern_sequence_table_assoc, 45613786Sjavier.bueno@metempsy.com size = Parent.pattern_sequence_table_entries), 45713786Sjavier.bueno@metempsy.com "Indexing policy of the pattern sequence table") 45813786Sjavier.bueno@metempsy.com pattern_sequence_table_replacement_policy = Param.BaseReplacementPolicy( 45913786Sjavier.bueno@metempsy.com LRURP(), "Replacement policy of the pattern sequence table") 46013786Sjavier.bueno@metempsy.com 46113786Sjavier.bueno@metempsy.com region_miss_order_buffer_entries = Param.Unsigned(131072, 46213786Sjavier.bueno@metempsy.com "Number of entries of the Region Miss Order Buffer") 46313786Sjavier.bueno@metempsy.com reconstruction_entries = Param.Unsigned(256, 46413786Sjavier.bueno@metempsy.com "Number of reconstruction entries") 46513825Sivan.pizarro@metempsy.com 46613825Sivan.pizarro@metempsy.comclass HWPProbeEventRetiredInsts(HWPProbeEvent): 46713825Sivan.pizarro@metempsy.com def register(self): 46813825Sivan.pizarro@metempsy.com if self.obj: 46913825Sivan.pizarro@metempsy.com for name in self.names: 47013825Sivan.pizarro@metempsy.com self.prefetcher.getCCObject().addEventProbeRetiredInsts( 47113825Sivan.pizarro@metempsy.com self.obj.getCCObject(), name) 47213825Sivan.pizarro@metempsy.com 47313825Sivan.pizarro@metempsy.comclass PIFPrefetcher(QueuedPrefetcher): 47413825Sivan.pizarro@metempsy.com type = 'PIFPrefetcher' 47513825Sivan.pizarro@metempsy.com cxx_class = 'PIFPrefetcher' 47613825Sivan.pizarro@metempsy.com cxx_header = "mem/cache/prefetch/pif.hh" 47713825Sivan.pizarro@metempsy.com cxx_exports = [ 47813825Sivan.pizarro@metempsy.com PyBindMethod("addEventProbeRetiredInsts"), 47913825Sivan.pizarro@metempsy.com ] 48013825Sivan.pizarro@metempsy.com 48113825Sivan.pizarro@metempsy.com prec_spatial_region_bits = Param.Unsigned(2, 48213825Sivan.pizarro@metempsy.com "Number of preceding addresses in the spatial region") 48313825Sivan.pizarro@metempsy.com succ_spatial_region_bits = Param.Unsigned(8, 48413825Sivan.pizarro@metempsy.com "Number of subsequent addresses in the spatial region") 48513825Sivan.pizarro@metempsy.com compactor_entries = Param.Unsigned(2, "Entries in the temp. compactor") 48613825Sivan.pizarro@metempsy.com stream_address_buffer_entries = Param.Unsigned(7, "Entries in the SAB") 48713825Sivan.pizarro@metempsy.com history_buffer_size = Param.Unsigned(16, "Entries in the history buffer") 48813825Sivan.pizarro@metempsy.com 48913825Sivan.pizarro@metempsy.com index_entries = Param.MemorySize("64", 49013825Sivan.pizarro@metempsy.com "Number of entries in the index") 49113825Sivan.pizarro@metempsy.com index_assoc = Param.Unsigned(64, 49213825Sivan.pizarro@metempsy.com "Associativity of the index") 49313825Sivan.pizarro@metempsy.com index_indexing_policy = Param.BaseIndexingPolicy( 49413825Sivan.pizarro@metempsy.com SetAssociative(entry_size = 1, assoc = Parent.index_assoc, 49513825Sivan.pizarro@metempsy.com size = Parent.index_entries), 49613825Sivan.pizarro@metempsy.com "Indexing policy of the index") 49713825Sivan.pizarro@metempsy.com index_replacement_policy = Param.BaseReplacementPolicy(LRURP(), 49813825Sivan.pizarro@metempsy.com "Replacement policy of the index") 49913825Sivan.pizarro@metempsy.com 50013825Sivan.pizarro@metempsy.com def listenFromProbeRetiredInstructions(self, simObj): 50113829Sjavier.bueno@metempsy.com if not isinstance(simObj, SimObject): 50213829Sjavier.bueno@metempsy.com raise TypeError("argument must be of SimObject type") 50313825Sivan.pizarro@metempsy.com self.addEvent(HWPProbeEventRetiredInsts(self, simObj,"RetiredInstsPC")) 504