#include <CacheMemory.hh>

Inheritance diagram for gem5::ruby::CacheMemory:

Classes
struct	CacheMemoryStats

Public Types
typedef RubyCacheParams	Params

typedef std::shared_ptr< replacement_policy::ReplacementData >	ReplData

Public Types inherited from gem5::SimObject
typedef SimObjectParams	Params

Public Member Functions
	CacheMemory (const Params &p)

	~CacheMemory ()

void	init ()
	init() is called after all C++ SimObjects have been created and all ports are connected. More...

bool	tryCacheAccess (Addr address, RubyRequestType type, DataBlock *&data_ptr)

bool	testCacheAccess (Addr address, RubyRequestType type, DataBlock *&data_ptr)

bool	isTagPresent (Addr address) const

bool	cacheAvail (Addr address) const

AbstractCacheEntry *	getNullEntry () const

AbstractCacheEntry *	allocate (Addr address, AbstractCacheEntry *new_entry)

void	allocateVoid (Addr address, AbstractCacheEntry *new_entry)

void	deallocate (Addr address)

Addr	cacheProbe (Addr address) const

AbstractCacheEntry *	lookup (Addr address)

const AbstractCacheEntry *	lookup (Addr address) const

Cycles	getTagLatency () const

Cycles	getDataLatency () const

bool	isBlockInvalid (int64_t cache_set, int64_t loc)

bool	isBlockNotBusy (int64_t cache_set, int64_t loc)

void	recordCacheContents (int cntrl, CacheRecorder *tr) const

void	setMRU (Addr address)

void	setMRU (Addr addr, int occupancy)

void	setMRU (AbstractCacheEntry *entry)

int	getReplacementWeight (int64_t set, int64_t loc)

void	setLocked (Addr addr, int context)

void	clearLocked (Addr addr)

void	clearLockedAll (int context)

bool	isLocked (Addr addr, int context)

void	print (std::ostream &out) const

void	printData (std::ostream &out) const

bool	checkResourceAvailable (CacheResourceType res, Addr addr)

void	recordRequestType (CacheRequestType requestType, Addr addr)

void	htmAbortTransaction ()

void	htmCommitTransaction ()

int	getCacheSize () const

int	getCacheAssoc () const

int	getNumBlocks () const

Addr	getAddressAtIdx (int idx) const

void	profileDemandHit ()

void	profileDemandMiss ()

void	profilePrefetchHit ()

void	profilePrefetchMiss ()

Public Member Functions inherited from gem5::SimObject
const Params &	params () const

	SimObject (const Params &p)

virtual	~SimObject ()

virtual void	loadState (CheckpointIn &cp)
	loadState() is called on each SimObject when restoring from a checkpoint. More...

virtual void	initState ()
	initState() is called on each SimObject when not restoring from a checkpoint. More...

virtual void	regProbePoints ()
	Register probe points for this object. More...

virtual void	regProbeListeners ()
	Register probe listeners for this object. More...

ProbeManager *	getProbeManager ()
	Get the probe manager for this object. More...

virtual Port &	getPort (const std::string &if_name, PortID idx=InvalidPortID)
	Get a port with a given name and index. More...

virtual void	startup ()
	startup() is the final initialization call before simulation. More...

DrainState	drain () override
	Provide a default implementation of the drain interface for objects that don't need draining. More...

virtual void	memWriteback ()
	Write back dirty buffers to memory using functional writes. More...

virtual void	memInvalidate ()
	Invalidate the contents of memory buffers. More...

void	serialize (CheckpointOut &cp) const override
	Serialize an object. More...

void	unserialize (CheckpointIn &cp) override
	Unserialize an object. More...

Public Member Functions inherited from gem5::EventManager
EventQueue *	eventQueue () const

void	schedule (Event &event, Tick when)

void	deschedule (Event &event)

void	reschedule (Event &event, Tick when, bool always=false)

void	schedule (Event *event, Tick when)

void	deschedule (Event *event)

void	reschedule (Event *event, Tick when, bool always=false)

void	wakeupEventQueue (Tick when=(Tick) -1)
	This function is not needed by the usual gem5 event loop but may be necessary in derived EventQueues which host gem5 on other schedulers. More...

void	setCurTick (Tick newVal)

	EventManager (EventManager &em)
	Event manger manages events in the event queue. More...

	EventManager (EventManager *em)

	EventManager (EventQueue *eq)

Public Member Functions inherited from gem5::Serializable
	Serializable ()

virtual	~Serializable ()

void	serializeSection (CheckpointOut &cp, const char *name) const
	Serialize an object into a new section. More...

void	serializeSection (CheckpointOut &cp, const std::string &name) const

void	unserializeSection (CheckpointIn &cp, const char *name)
	Unserialize an a child object. More...

void	unserializeSection (CheckpointIn &cp, const std::string &name)

Public Member Functions inherited from gem5::Drainable
DrainState	drainState () const
	Return the current drain state of an object. More...

virtual void	notifyFork ()
	Notify a child process of a fork. More...

Public Member Functions inherited from gem5::statistics::Group
	Group (Group parent, const char name=nullptr)
	Construct a new statistics group. More...

virtual	~Group ()

virtual void	regStats ()
	Callback to set stat parameters. More...

virtual void	resetStats ()
	Callback to reset stats. More...

virtual void	preDumpStats ()
	Callback before stats are dumped. More...

void	addStat (statistics::Info *info)
	Register a stat with this group. More...

const std::map< std::string, Group * > &	getStatGroups () const
	Get all child groups associated with this object. More...

const std::vector< Info * > &	getStats () const
	Get all stats associated with this object. More...

void	addStatGroup (const char name, Group block)
	Add a stat block as a child of this block. More...

const Info *	resolveStat (std::string name) const
	Resolve a stat by its name within this group. More...

void	mergeStatGroup (Group *block)
	Merge the contents (stats & children) of a block to this block. More...

	Group ()=delete

	Group (const Group &)=delete

Group &	operator= (const Group &)=delete

Public Member Functions inherited from gem5::Named
	Named (const std::string &name_)

virtual	~Named ()=default

virtual std::string	name () const

Private Member Functions
int64_t	addressToCacheSet (Addr address) const

int	findTagInSet (int64_t line, Addr tag) const

int	findTagInSetIgnorePermissions (int64_t cacheSet, Addr tag) const

	CacheMemory (const CacheMemory &obj)

CacheMemory &	operator= (const CacheMemory &obj)

Private Attributes
bool	m_is_instruction_only_cache

std::unordered_map< Addr, int >	m_tag_index

std::vector< std::vector< AbstractCacheEntry * > >	m_cache

replacement_policy::Base *	m_replacementPolicy_ptr
	We use the replacement policies from the Classic memory system. More...

BankedArray	dataArray

BankedArray	tagArray

int	m_cache_size

int	m_cache_num_sets

int	m_cache_num_set_bits

int	m_cache_assoc

int	m_start_index_bit

bool	m_resource_stalls

int	m_block_size

std::vector< std::vector< ReplData > >	replacement_data
	We store all the ReplacementData in a 2-dimensional array. More...

bool	m_use_occupancy
	Set to true when using WeightedLRU replacement policy, otherwise, set to false. More...

gem5::ruby::CacheMemory::CacheMemoryStats	cacheMemoryStats

Additional Inherited Members
Static Public Member Functions inherited from gem5::SimObject
static void	serializeAll (const std::string &cpt_dir)
	Create a checkpoint by serializing all SimObjects in the system. More...

static SimObject *	find (const char *name)
	Find the SimObject with the given name and return a pointer to it. More...

static void	setSimObjectResolver (SimObjectResolver *resolver)
	There is a single object name resolver, and it is only set when simulation is restoring from checkpoints. More...

static SimObjectResolver *	getSimObjectResolver ()
	There is a single object name resolver, and it is only set when simulation is restoring from checkpoints. More...

Static Public Member Functions inherited from gem5::Serializable
static const std::string &	currentSection ()
	Gets the fully-qualified name of the active section. More...

static void	generateCheckpointOut (const std::string &cpt_dir, std::ofstream &outstream)
	Generate a checkpoint file so that the serialization can be routed to it. More...

Protected Member Functions inherited from gem5::Drainable
	Drainable ()

virtual	~Drainable ()

virtual void	drainResume ()
	Resume execution after a successful drain. More...

void	signalDrainDone () const
	Signal that an object is drained. More...

Protected Attributes inherited from gem5::SimObject
const SimObjectParams &	_params
	Cached copy of the object parameters. More...

Protected Attributes inherited from gem5::EventManager
EventQueue *	eventq
	A pointer to this object's event queue. More...

Detailed Description

Definition at line 69 of file CacheMemory.hh.

Member Typedef Documentation

◆ Params

typedef RubyCacheParams gem5::ruby::CacheMemory::Params

Definition at line 72 of file CacheMemory.hh.

◆ ReplData

typedef std::shared_ptr<replacement_policy::ReplacementData> gem5::ruby::CacheMemory::ReplData

Definition at line 73 of file CacheMemory.hh.

Constructor & Destructor Documentation

◆ CacheMemory() [1/2]

gem5::ruby::CacheMemory::CacheMemory ( const Params & p )

Definition at line 70 of file CacheMemory.cc.

References m_block_size, m_cache_assoc, m_cache_size, m_is_instruction_only_cache, m_replacementPolicy_ptr, m_resource_stalls, m_start_index_bit, m_use_occupancy, and gem5::VegaISA::p.

◆ ~CacheMemory()

gem5::ruby::CacheMemory::~CacheMemory ( )

Definition at line 113 of file CacheMemory.cc.

References gem5::ArmISA::i, gem5::ArmISA::j, m_cache, m_cache_assoc, m_cache_num_sets, and m_replacementPolicy_ptr.

◆ CacheMemory() [2/2]

gem5::ruby::CacheMemory::CacheMemory ( const CacheMemory & obj )

private

Member Function Documentation

◆ addressToCacheSet()

int64_t gem5::ruby::CacheMemory::addressToCacheSet ( Addr address ) const

private

Definition at line 126 of file CacheMemory.cc.

References gem5::ruby::bitSelect(), m_cache_num_set_bits, m_start_index_bit, and gem5::ruby::makeLineAddress().

Referenced by allocate(), cacheAvail(), cacheProbe(), checkResourceAvailable(), lookup(), and recordRequestType().

◆ allocate()

AbstractCacheEntry * gem5::ruby::CacheMemory::allocate	(	Addr	address,
		AbstractCacheEntry *	new_entry
	)

Definition at line 269 of file CacheMemory.cc.

References addressToCacheSet(), cacheAvail(), gem5::curTick(), DPRINTF, gem5::ArmISA::i, isTagPresent(), m_cache, m_cache_assoc, m_replacementPolicy_ptr, m_tag_index, gem5::ruby::makeLineAddress(), panic, replacement_data, gem5::ReplaceableEntry::replacementData, gem5::replacement_policy::Base::reset(), gem5::ArmISA::set, and warn_once.

Referenced by allocateVoid().

◆ allocateVoid()

void gem5::ruby::CacheMemory::allocateVoid	(	Addr	address,
		AbstractCacheEntry *	new_entry
	)

inline

Definition at line 105 of file CacheMemory.hh.

References allocate().

◆ cacheAvail()

bool gem5::ruby::CacheMemory::cacheAvail ( Addr address ) const

Definition at line 247 of file CacheMemory.cc.

References addressToCacheSet(), gem5::ArmISA::i, gem5::ruby::AbstractCacheEntry::m_Address, m_cache, m_cache_assoc, gem5::ruby::AbstractCacheEntry::m_Permission, and gem5::ruby::makeLineAddress().

Referenced by allocate(), and cacheProbe().

◆ cacheProbe()

Addr gem5::ruby::CacheMemory::cacheProbe ( Addr address ) const

Definition at line 325 of file CacheMemory.cc.

References addressToCacheSet(), cacheAvail(), gem5::ArmISA::i, m_cache, m_cache_assoc, m_replacementPolicy_ptr, and gem5::ruby::makeLineAddress().

◆ checkResourceAvailable()

bool gem5::ruby::CacheMemory::checkResourceAvailable	(	CacheResourceType	res,
		Addr	addr
	)

Definition at line 643 of file CacheMemory.cc.

References gem5::X86ISA::addr, addressToCacheSet(), cacheMemoryStats, dataArray, DPRINTF, m_resource_stalls, gem5::ruby::CacheMemory::CacheMemoryStats::numDataArrayStalls, gem5::ruby::CacheMemory::CacheMemoryStats::numTagArrayStalls, panic, tagArray, and gem5::ruby::BankedArray::tryAccess().

◆ clearLocked()

void gem5::ruby::CacheMemory::clearLocked ( Addr addr )

Definition at line 488 of file CacheMemory.cc.

References gem5::ruby::AbstractCacheEntry::clearLocked(), DPRINTF, and lookup().

◆ clearLockedAll()

void gem5::ruby::CacheMemory::clearLockedAll ( int context )

Definition at line 497 of file CacheMemory.cc.

References gem5::ruby::AbstractCacheEntry::clearLocked(), DPRINTF, gem5::ArmISA::i, gem5::ruby::AbstractCacheEntry::isLocked(), gem5::ArmISA::j, gem5::ruby::AbstractCacheEntry::m_Address, m_cache, and gem5::ArmISA::set.

Referenced by gem5::ruby::Sequencer::llscClearLocalMonitor().

◆ deallocate()

void gem5::ruby::CacheMemory::deallocate ( Addr address )

Definition at line 310 of file CacheMemory.cc.

References DPRINTF, gem5::ReplaceableEntry::getSet(), gem5::ReplaceableEntry::getWay(), gem5::replacement_policy::Base::invalidate(), lookup(), m_cache, m_replacementPolicy_ptr, m_tag_index, and gem5::ReplaceableEntry::replacementData.

◆ findTagInSet()

int gem5::ruby::CacheMemory::findTagInSet	(	int64_t	line,
		Addr	tag
	)		const

private

Definition at line 136 of file CacheMemory.cc.

References m_cache, m_tag_index, and gem5::ruby::makeLineAddress().

Referenced by lookup().

◆ findTagInSetIgnorePermissions()

int gem5::ruby::CacheMemory::findTagInSetIgnorePermissions	(	int64_t	cacheSet,
		Addr	tag
	)		const

private

Definition at line 151 of file CacheMemory.cc.

References m_tag_index, and gem5::ruby::makeLineAddress().

◆ getAddressAtIdx()

Addr gem5::ruby::CacheMemory::getAddressAtIdx ( int idx ) const

Definition at line 166 of file CacheMemory.cc.

References gem5::ruby::AbstractCacheEntry::m_Address, m_cache, m_cache_assoc, m_cache_num_sets, gem5::ruby::AbstractCacheEntry::m_Permission, and gem5::ArmISA::set.

Referenced by gem5::ruby::VIPERCoalescer::invTCP().

◆ getCacheAssoc()

int gem5::ruby::CacheMemory::getCacheAssoc ( ) const

inline

Definition at line 158 of file CacheMemory.hh.

References m_cache_assoc.

◆ getCacheSize()

int gem5::ruby::CacheMemory::getCacheSize ( ) const

inline

Definition at line 157 of file CacheMemory.hh.

References m_cache_size.

◆ getDataLatency()

Cycles gem5::ruby::CacheMemory::getDataLatency ( ) const

inline

Definition at line 121 of file CacheMemory.hh.

References dataArray, and gem5::ruby::BankedArray::getLatency().

◆ getNullEntry()

AbstractCacheEntry* gem5::ruby::CacheMemory::getNullEntry ( ) const

inline

Definition at line 98 of file CacheMemory.hh.

◆ getNumBlocks()

int gem5::ruby::CacheMemory::getNumBlocks ( ) const

inline

Definition at line 159 of file CacheMemory.hh.

References m_cache_assoc, and m_cache_num_sets.

Referenced by gem5::ruby::VIPERCoalescer::invTCP().

◆ getReplacementWeight()

int gem5::ruby::CacheMemory::getReplacementWeight	(	int64_t	set,
		int64_t	loc
	)

Definition at line 401 of file CacheMemory.cc.

References m_cache, m_cache_assoc, m_cache_num_sets, and gem5::ArmISA::set.

◆ getTagLatency()

Cycles gem5::ruby::CacheMemory::getTagLatency ( ) const

inline

Definition at line 120 of file CacheMemory.hh.

References gem5::ruby::BankedArray::getLatency(), and tagArray.

◆ htmAbortTransaction()

void gem5::ruby::CacheMemory::htmAbortTransaction ( )

Definition at line 687 of file CacheMemory.cc.

References cacheMemoryStats, gem5::ruby::AbstractCacheEntry::clearLocked(), DPRINTF, gem5::ruby::AbstractCacheEntry::getInHtmReadSet(), gem5::ruby::AbstractCacheEntry::getInHtmWriteSet(), gem5::ruby::CacheMemory::CacheMemoryStats::htmTransAbortReadSet, gem5::ruby::CacheMemory::CacheMemoryStats::htmTransAbortWriteSet, gem5::ArmISA::i, gem5::ruby::AbstractCacheEntry::invalidateEntry(), gem5::ArmISA::j, m_cache, gem5::statistics::DistBase< Derived, Stor >::sample(), gem5::ArmISA::set, gem5::ruby::AbstractCacheEntry::setInHtmReadSet(), and gem5::ruby::AbstractCacheEntry::setInHtmWriteSet().

◆ htmCommitTransaction()

void gem5::ruby::CacheMemory::htmCommitTransaction ( )

Definition at line 721 of file CacheMemory.cc.

References cacheMemoryStats, gem5::ruby::AbstractCacheEntry::clearLocked(), DPRINTF, gem5::ruby::AbstractCacheEntry::getInHtmReadSet(), gem5::ruby::AbstractCacheEntry::getInHtmWriteSet(), gem5::ruby::CacheMemory::CacheMemoryStats::htmTransCommitReadSet, gem5::ruby::CacheMemory::CacheMemoryStats::htmTransCommitWriteSet, gem5::ArmISA::i, gem5::ArmISA::j, m_cache, gem5::statistics::DistBase< Derived, Stor >::sample(), gem5::ArmISA::set, gem5::ruby::AbstractCacheEntry::setInHtmReadSet(), and gem5::ruby::AbstractCacheEntry::setInHtmWriteSet().

◆ init()

void gem5::ruby::CacheMemory::init ( )

virtual

init() is called after all C++ SimObjects have been created and all ports are connected.

Initializations that are independent of unserialization but rely on a fully instantiated and connected SimObject graph should be done here.

Reimplemented from gem5::SimObject.

Definition at line 90 of file CacheMemory.cc.

References gem5::floorLog2(), gem5::ruby::RubySystem::getBlockSizeBytes(), gem5::ArmISA::i, gem5::replacement_policy::Base::instantiateEntry(), gem5::ArmISA::j, m_block_size, m_cache, m_cache_assoc, m_cache_num_set_bits, m_cache_num_sets, m_cache_size, m_replacementPolicy_ptr, and replacement_data.

◆ isBlockInvalid()

bool gem5::ruby::CacheMemory::isBlockInvalid	(	int64_t	cache_set,
		int64_t	loc
	)

Definition at line 673 of file CacheMemory.cc.

References m_cache.

◆ isBlockNotBusy()

bool gem5::ruby::CacheMemory::isBlockNotBusy	(	int64_t	cache_set,
		int64_t	loc
	)

Definition at line 679 of file CacheMemory.cc.

References m_cache.

◆ isLocked()

bool gem5::ruby::CacheMemory::isLocked	(	Addr	addr,
		int	context
	)

Definition at line 514 of file CacheMemory.cc.

References DPRINTF, gem5::ruby::AbstractCacheEntry::isLocked(), lookup(), and gem5::ruby::AbstractCacheEntry::m_locked.

◆ isTagPresent()

bool gem5::ruby::CacheMemory::isTagPresent ( Addr address ) const

Definition at line 231 of file CacheMemory.cc.

References DPRINTF, and lookup().

Referenced by allocate().

◆ lookup() [1/2]

AbstractCacheEntry * gem5::ruby::CacheMemory::lookup ( Addr address )

Definition at line 342 of file CacheMemory.cc.

References addressToCacheSet(), findTagInSet(), m_cache, and gem5::ruby::makeLineAddress().

Referenced by clearLocked(), deallocate(), isLocked(), isTagPresent(), gem5::ruby::Sequencer::llscCheckMonitor(), gem5::ruby::Sequencer::llscClearMonitor(), gem5::ruby::Sequencer::llscLoadLinked(), gem5::ruby::Sequencer::llscStoreConditional(), setLocked(), setMRU(), testCacheAccess(), and tryCacheAccess().

◆ lookup() [2/2]

const AbstractCacheEntry * gem5::ruby::CacheMemory::lookup ( Addr address ) const

Definition at line 353 of file CacheMemory.cc.

References addressToCacheSet(), findTagInSet(), m_cache, and gem5::ruby::makeLineAddress().

◆ operator=()

CacheMemory& gem5::ruby::CacheMemory::operator= ( const CacheMemory & obj )

private

◆ print()

void gem5::ruby::CacheMemory::print ( std::ostream & out ) const

Definition at line 454 of file CacheMemory.cc.

References gem5::ArmISA::i, gem5::ArmISA::j, m_cache, m_cache_assoc, m_cache_num_sets, and gem5::Named::name().

Referenced by gem5::ruby::operator<<().

◆ printData()

void gem5::ruby::CacheMemory::printData ( std::ostream & out ) const

Definition at line 473 of file CacheMemory.cc.

◆ profileDemandHit()

void gem5::ruby::CacheMemory::profileDemandHit ( )

Definition at line 751 of file CacheMemory.cc.

References cacheMemoryStats, and gem5::ruby::CacheMemory::CacheMemoryStats::m_demand_hits.

◆ profileDemandMiss()

void gem5::ruby::CacheMemory::profileDemandMiss ( )

Definition at line 757 of file CacheMemory.cc.

References cacheMemoryStats, and gem5::ruby::CacheMemory::CacheMemoryStats::m_demand_misses.

◆ profilePrefetchHit()

void gem5::ruby::CacheMemory::profilePrefetchHit ( )

Definition at line 763 of file CacheMemory.cc.

References cacheMemoryStats, and gem5::ruby::CacheMemory::CacheMemoryStats::m_prefetch_hits.

◆ profilePrefetchMiss()

void gem5::ruby::CacheMemory::profilePrefetchMiss ( )

Definition at line 769 of file CacheMemory.cc.

References cacheMemoryStats, and gem5::ruby::CacheMemory::CacheMemoryStats::m_prefetch_misses.

◆ recordCacheContents()

void gem5::ruby::CacheMemory::recordCacheContents	(	int	cntrl,
		CacheRecorder *	tr
	)		const

Definition at line 415 of file CacheMemory.cc.

References gem5::ruby::CacheRecorder::addRecord(), DPRINTF, gem5::ArmISA::i, gem5::ArmISA::j, m_cache, m_cache_assoc, m_cache_num_sets, m_is_instruction_only_cache, gem5::Named::name(), and gem5::RiscvISA::perm.

◆ recordRequestType()

void gem5::ruby::CacheMemory::recordRequestType	(	CacheRequestType	requestType,
		Addr	addr
	)

Definition at line 611 of file CacheMemory.cc.

References gem5::X86ISA::addr, addressToCacheSet(), cacheMemoryStats, dataArray, DPRINTF, m_resource_stalls, gem5::ruby::CacheMemory::CacheMemoryStats::numDataArrayReads, gem5::ruby::CacheMemory::CacheMemoryStats::numDataArrayWrites, gem5::ruby::CacheMemory::CacheMemoryStats::numTagArrayReads, gem5::ruby::CacheMemory::CacheMemoryStats::numTagArrayWrites, gem5::ruby::BankedArray::reserve(), tagArray, and warn.

◆ setLocked()

void gem5::ruby::CacheMemory::setLocked	(	Addr	addr,
		int	context
	)

Definition at line 479 of file CacheMemory.cc.

References DPRINTF, lookup(), and gem5::ruby::AbstractCacheEntry::setLocked().

◆ setMRU() [1/3]

void gem5::ruby::CacheMemory::setMRU ( AbstractCacheEntry * entry )

Definition at line 374 of file CacheMemory.cc.

References gem5::curTick(), m_replacementPolicy_ptr, gem5::ReplaceableEntry::replacementData, gem5::ruby::AbstractCacheEntry::setLastAccess(), and gem5::replacement_policy::Base::touch().

◆ setMRU() [2/3]

void gem5::ruby::CacheMemory::setMRU	(	Addr	addr,
		int	occupancy
	)

Definition at line 382 of file CacheMemory.cc.

References gem5::curTick(), lookup(), m_replacementPolicy_ptr, m_use_occupancy, gem5::ruby::makeLineAddress(), gem5::ReplaceableEntry::replacementData, gem5::ruby::AbstractCacheEntry::setLastAccess(), and gem5::replacement_policy::Base::touch().

◆ setMRU() [3/3]

void gem5::ruby::CacheMemory::setMRU ( Addr address )

Definition at line 364 of file CacheMemory.cc.

References gem5::curTick(), lookup(), m_replacementPolicy_ptr, gem5::ruby::makeLineAddress(), gem5::ReplaceableEntry::replacementData, gem5::ruby::AbstractCacheEntry::setLastAccess(), and gem5::replacement_policy::Base::touch().

◆ testCacheAccess()

bool gem5::ruby::CacheMemory::testCacheAccess	(	Addr	address,
		RubyRequestType	type,
		DataBlock *&	data_ptr
	)

Definition at line 211 of file CacheMemory.cc.

References gem5::curTick(), DPRINTF, gem5::ruby::AbstractCacheEntry::getDataBlk(), lookup(), gem5::ruby::AbstractCacheEntry::m_Permission, m_replacementPolicy_ptr, gem5::ReplaceableEntry::replacementData, gem5::ruby::AbstractCacheEntry::setLastAccess(), and gem5::replacement_policy::Base::touch().

◆ tryCacheAccess()

bool gem5::ruby::CacheMemory::tryCacheAccess	(	Addr	address,
		RubyRequestType	type,
		DataBlock *&	data_ptr
	)

Definition at line 186 of file CacheMemory.cc.

References gem5::curTick(), DPRINTF, gem5::ruby::AbstractCacheEntry::getDataBlk(), lookup(), gem5::ruby::AbstractCacheEntry::m_Permission, m_replacementPolicy_ptr, gem5::ReplaceableEntry::replacementData, gem5::ruby::AbstractCacheEntry::setLastAccess(), gem5::replacement_policy::Base::touch(), and gem5::X86ISA::type.

Member Data Documentation

◆ cacheMemoryStats

gem5::ruby::CacheMemory::CacheMemoryStats gem5::ruby::CacheMemory::cacheMemoryStats

private

Referenced by checkResourceAvailable(), htmAbortTransaction(), htmCommitTransaction(), profileDemandHit(), profileDemandMiss(), profilePrefetchHit(), profilePrefetchMiss(), and recordRequestType().

◆ dataArray

BankedArray gem5::ruby::CacheMemory::dataArray

private

Definition at line 187 of file CacheMemory.hh.

Referenced by checkResourceAvailable(), getDataLatency(), and recordRequestType().

◆ m_block_size

int gem5::ruby::CacheMemory::m_block_size

private

Definition at line 196 of file CacheMemory.hh.

Referenced by CacheMemory(), and init().

◆ m_cache

std::vector<std::vector<AbstractCacheEntry*> > gem5::ruby::CacheMemory::m_cache

private

Definition at line 182 of file CacheMemory.hh.

Referenced by allocate(), cacheAvail(), cacheProbe(), clearLockedAll(), deallocate(), findTagInSet(), getAddressAtIdx(), getReplacementWeight(), htmAbortTransaction(), htmCommitTransaction(), init(), isBlockInvalid(), isBlockNotBusy(), lookup(), print(), recordCacheContents(), and ~CacheMemory().

◆ m_cache_assoc

int gem5::ruby::CacheMemory::m_cache_assoc

private

Definition at line 193 of file CacheMemory.hh.

Referenced by allocate(), cacheAvail(), CacheMemory(), cacheProbe(), getAddressAtIdx(), getCacheAssoc(), getNumBlocks(), getReplacementWeight(), init(), print(), recordCacheContents(), and ~CacheMemory().

◆ m_cache_num_set_bits

int gem5::ruby::CacheMemory::m_cache_num_set_bits

private

Definition at line 192 of file CacheMemory.hh.

Referenced by addressToCacheSet(), and init().

◆ m_cache_num_sets

int gem5::ruby::CacheMemory::m_cache_num_sets

private

Definition at line 191 of file CacheMemory.hh.

Referenced by getAddressAtIdx(), getNumBlocks(), getReplacementWeight(), init(), print(), recordCacheContents(), and ~CacheMemory().

◆ m_cache_size

int gem5::ruby::CacheMemory::m_cache_size

private

Definition at line 190 of file CacheMemory.hh.

Referenced by CacheMemory(), getCacheSize(), and init().

◆ m_is_instruction_only_cache

bool gem5::ruby::CacheMemory::m_is_instruction_only_cache

private

Definition at line 177 of file CacheMemory.hh.

Referenced by CacheMemory(), and recordCacheContents().

◆ m_replacementPolicy_ptr

replacement_policy::Base* gem5::ruby::CacheMemory::m_replacementPolicy_ptr

private

We use the replacement policies from the Classic memory system.

Definition at line 185 of file CacheMemory.hh.

Referenced by allocate(), CacheMemory(), cacheProbe(), deallocate(), init(), setMRU(), testCacheAccess(), tryCacheAccess(), and ~CacheMemory().

◆ m_resource_stalls

bool gem5::ruby::CacheMemory::m_resource_stalls

private

Definition at line 195 of file CacheMemory.hh.

Referenced by CacheMemory(), checkResourceAvailable(), and recordRequestType().

◆ m_start_index_bit

int gem5::ruby::CacheMemory::m_start_index_bit

private

Definition at line 194 of file CacheMemory.hh.

Referenced by addressToCacheSet(), and CacheMemory().

◆ m_tag_index

std::unordered_map<Addr, int> gem5::ruby::CacheMemory::m_tag_index

private

Definition at line 181 of file CacheMemory.hh.

Referenced by allocate(), deallocate(), findTagInSet(), and findTagInSetIgnorePermissions().

◆ m_use_occupancy

bool gem5::ruby::CacheMemory::m_use_occupancy

private

Set to true when using WeightedLRU replacement policy, otherwise, set to false.

Definition at line 212 of file CacheMemory.hh.

Referenced by CacheMemory(), and setMRU().

◆ replacement_data

std::vector<std::vector<ReplData> > gem5::ruby::CacheMemory::replacement_data

private

We store all the ReplacementData in a 2-dimensional array.

By doing this, we can use all replacement policies from Classic system. Ruby cache will deallocate cache entry every time we evict the cache block so we cannot store the ReplacementData inside the cache entry. Instantiate ReplacementData for multiple times will break replacement policy like TreePLRU.

Definition at line 206 of file CacheMemory.hh.

Referenced by allocate(), and init().

◆ tagArray

BankedArray gem5::ruby::CacheMemory::tagArray

private

Definition at line 188 of file CacheMemory.hh.

Referenced by checkResourceAvailable(), getTagLatency(), and recordRequestType().

The documentation for this class was generated from the following files:

mem/ruby/structures/CacheMemory.hh
mem/ruby/structures/CacheMemory.cc

Classes

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Params

◆ ReplData

Constructor & Destructor Documentation

◆ CacheMemory() [1/2]

◆ ~CacheMemory()

◆ CacheMemory() [2/2]

Member Function Documentation

◆ addressToCacheSet()

◆ allocate()

◆ allocateVoid()

◆ cacheAvail()

◆ cacheProbe()

◆ checkResourceAvailable()

◆ clearLocked()

◆ clearLockedAll()

◆ deallocate()

◆ findTagInSet()

◆ findTagInSetIgnorePermissions()

◆ getAddressAtIdx()

◆ getCacheAssoc()

◆ getCacheSize()

◆ getDataLatency()

◆ getNullEntry()

◆ getNumBlocks()

◆ getReplacementWeight()

◆ getTagLatency()

◆ htmAbortTransaction()

◆ htmCommitTransaction()

◆ init()

◆ isBlockInvalid()

◆ isBlockNotBusy()

◆ isLocked()

◆ isTagPresent()

◆ lookup() [1/2]

◆ lookup() [2/2]

◆ operator=()

◆ print()

◆ printData()

◆ profileDemandHit()

◆ profileDemandMiss()

◆ profilePrefetchHit()

◆ profilePrefetchMiss()

◆ recordCacheContents()

◆ recordRequestType()

◆ setLocked()

◆ setMRU() [1/3]

◆ setMRU() [2/3]

◆ setMRU() [3/3]

◆ testCacheAccess()

◆ tryCacheAccess()

Member Data Documentation

◆ cacheMemoryStats

◆ dataArray

◆ m_block_size

◆ m_cache

◆ m_cache_assoc

◆ m_cache_num_set_bits

◆ m_cache_num_sets

◆ m_cache_size

◆ m_is_instruction_only_cache

◆ m_replacementPolicy_ptr

◆ m_resource_stalls

◆ m_start_index_bit

◆ m_tag_index

◆ m_use_occupancy

◆ replacement_data

◆ tagArray