41#ifndef __MEM_CACHE_PREFETCH_SPATIO_TEMPORAL_MEMORY_STREAMING_HH__
42#define __MEM_CACHE_PREFETCH_SPATIO_TEMPORAL_MEMORY_STREAMING_HH__
55struct STeMSPrefetcherParams;
112 seq_entry.counter.reset();
113 seq_entry.offset = 0;
140 if (seq_entry.counter > 0) {
141 if (seq_entry.offset ==
offset) {
148 seq_entry.offset =
offset;
207 STeMS(
const STeMSPrefetcherParams &
p);
A tagged entry is an entry containing a tag.
void registerTagExtractor(TagExtractor ext)
virtual void invalidate()
Invalidate the block.
std::function< Addr(Addr)> TagExtractor
Class containing the information needed by the prefetch to train and generate new prefetch requests.
unsigned int lastTriggerCounter
Counter to keep the count of accesses between trigger accesses.
void calculatePrefetch(const PrefetchInfo &pfi, std::vector< AddrPriority > &addresses, const CacheAccessor &cache) override
void addToRMOB(Addr sr_addr, Addr pst_addr, unsigned int delta)
Adds an entry to the RMOB.
AssociativeCache< ActiveGenerationTableEntry > patternSequenceTable
Pattern Sequence Table (PST)
void checkForActiveGenerationsEnd(const CacheAccessor &cache)
Checks if the active generations have ended.
CircularQueue< RegionMissOrderBufferEntry > rmob
Region Miss Order Buffer (RMOB)
bool addDuplicateEntriesToRMOB
Add duplicate entries to RMOB
const size_t spatialRegionSizeBits
log_2 of the spatial region size
const unsigned int reconstructionEntries
Number of reconstruction entries.
void reconstructSequence(CircularQueue< RegionMissOrderBufferEntry >::iterator rmob_it, std::vector< AddrPriority > &addresses)
Reconstructs a sequence of accesses and generates the prefetch addresses, adding them to the addresse...
AssociativeCache< ActiveGenerationTableEntry > activeGenerationTable
Active Generation Table (AGT)
const size_t spatialRegionSize
Size of each spatial region.
Copyright (c) 2024 Arm Limited All rights reserved.
uint64_t Addr
Address type This will probably be moved somewhere else in the near future.
Provides generic cache lookup functions.
Iterator to the circular queue.
Sequence entry data type.
unsigned int offset
Offset, in cache lines, within the spatial region.
unsigned int delta
Intearleaving position on the global access sequence.
SatCounter8 counter
2-bit confidence counter
Entry data type for the Active Generation Table (AGT) and the Pattern Sequence Table (PST)
std::vector< SequenceEntry > sequence
Sequence of accesses.
void invalidate() override
Invalidate the block.
unsigned int seqCounter
Counter to keep track of the interleaving between sequences.
ActiveGenerationTableEntry(int num_positions, TagExtractor ext)
Addr pc
PC that started this generation.
Addr paddress
Physical address of the spatial region.
void update(ActiveGenerationTableEntry const &e)
Update the entry data with an entry from a generation that just ended.
void addOffset(unsigned int offset)
Add a new access to the sequence.
Data type of the Region Miss Order Buffer entry.
Addr srAddress
Address of the spatial region.
Addr pstAddress
Address used to index the PST table, generated using the PC and the offset within the spatial region.
unsigned int delta
Delta within the global miss order sequence.