WalkCache Class Reference

#include <smmu_v3_caches.hh>

Inheritance diagram for WalkCache:

Classes
struct	Entry

Public Member Functions
	WalkCache (const std::array< unsigned, 2 *WALK_CACHE_LEVELS > &_sizes, unsigned _associativity, const std::string &policy)
virtual	~WalkCache ()
const Entry *	lookup (Addr va, Addr vaMask, uint16_t asid, uint16_t vmid, unsigned stage, unsigned level, bool updStats=true)
void	store (const Entry &incoming)
void	invalidateVA (Addr va, uint16_t asid, uint16_t vmid, const bool leaf_only)
void	invalidateVAA (Addr va, uint16_t vmid, const bool leaf_only)
void	invalidateASID (uint16_t asid, uint16_t vmid)
void	invalidateVMID (uint16_t vmid)
void	invalidateAll ()
void	regStats (const std::string &name) override
Public Member Functions inherited from SMMUv3BaseCache
	SMMUv3BaseCache (const std::string &policy_name, uint32_t seed)
virtual	~SMMUv3BaseCache ()

Protected Attributes
unsigned int	lookupsByStageLevel [2][WALK_CACHE_LEVELS]
Stats::Formula	averageLookupsByStageLevel [2][WALK_CACHE_LEVELS]
Stats::Scalar	totalLookupsByStageLevel [2][WALK_CACHE_LEVELS]
unsigned int	missesByStageLevel [2][WALK_CACHE_LEVELS]
Stats::Formula	averageMissesByStageLevel [2][WALK_CACHE_LEVELS]
Stats::Scalar	totalMissesByStageLevel [2][WALK_CACHE_LEVELS]
unsigned int	updatesByStageLevel [2][WALK_CACHE_LEVELS]
Stats::Formula	averageUpdatesByStageLevel [2][WALK_CACHE_LEVELS]
Stats::Scalar	totalUpdatesByStageLevel [2][WALK_CACHE_LEVELS]
Stats::Formula	averageHitRateByStageLevel [2][WALK_CACHE_LEVELS]
Stats::Scalar	insertionsByStageLevel [2][WALK_CACHE_LEVELS]
Protected Attributes inherited from SMMUv3BaseCache
int	replacementPolicy
size_t	nextToReplace
Random	random
uint32_t	useStamp
Stats::Formula	averageLookups
Stats::Scalar	totalLookups
Stats::Formula	averageMisses
Stats::Scalar	totalMisses
Stats::Formula	averageUpdates
Stats::Scalar	totalUpdates
Stats::Formula	averageHitRate
Stats::Scalar	insertions

Private Types
typedef std::vector< Entry >	Set

Private Member Functions
size_t	pickSetIdx (Addr va, Addr vaMask, unsigned stage, unsigned level) const
size_t	pickEntryIdxToReplace (const Set &set, unsigned stage, unsigned level)

Private Attributes
std::vector< Set >	sets
size_t	associativity
std::array< unsigned, 2 *WALK_CACHE_LEVELS >	sizes
std::array< unsigned, 2 *WALK_CACHE_LEVELS >	offsets

Additional Inherited Members
Static Protected Member Functions inherited from SMMUv3BaseCache
static int	decodePolicyName (const std::string &policy_name)

Detailed Description

Definition at line 281 of file smmu_v3_caches.hh.

Member Typedef Documentation

Set

typedef std::vector<Entry> WalkCache::Set

private

Definition at line 338 of file smmu_v3_caches.hh.

Constructor & Destructor Documentation

WalkCache()

WalkCache::WalkCache	(	const std::array< unsigned, 2 *WALK_CACHE_LEVELS > &	_sizes,
		unsigned	_associativity,
		const std::string &	policy
	)

Definition at line 969 of file smmu_v3_caches.cc.

References associativity, ArmISA::e, fatal, ArmISA::i, offsets, sets, sizes, and WALK_CACHE_LEVELS.

~WalkCache()

virtual WalkCache::~WalkCache ( )

inlinevirtual

Definition at line 305 of file smmu_v3_caches.hh.

Member Function Documentation

invalidateAll()

void WalkCache::invalidateAll

(

)

Definition at line 1150 of file smmu_v3_caches.cc.

References ArmISA::i, ArmISA::s, and sets.

Referenced by SMMUv3::processCommand().

invalidateASID()

void WalkCache::invalidateASID	(	uint16_t	asid,
		uint16_t	vmid
	)

Definition at line 1120 of file smmu_v3_caches.cc.

References ArmISA::asid, ArmISA::e, ArmISA::i, ArmISA::s, and sets.

Referenced by SMMUv3::processCommand().

invalidateVA()

void WalkCache::invalidateVA	(	Addr	va,
		uint16_t	asid,
		uint16_t	vmid,
		const bool	leaf_only
	)

Definition at line 1083 of file smmu_v3_caches.cc.

References ArmISA::asid, ArmISA::e, ArmISA::i, ArmISA::s, sets, and ArmISA::va.

Referenced by SMMUv3::processCommand().

invalidateVAA()

void WalkCache::invalidateVAA	(	Addr	va,
		uint16_t	vmid,
		const bool	leaf_only
	)

Definition at line 1102 of file smmu_v3_caches.cc.

References ArmISA::e, ArmISA::i, ArmISA::s, sets, and ArmISA::va.

Referenced by SMMUv3::processCommand().

invalidateVMID()

void WalkCache::invalidateVMID

(

uint16_t

vmid

)

Definition at line 1135 of file smmu_v3_caches.cc.

References ArmISA::e, ArmISA::i, ArmISA::s, and sets.

Referenced by SMMUv3::processCommand().

lookup()

const WalkCache::Entry * WalkCache::lookup	(	Addr	va,
		Addr	vaMask,
		uint16_t	asid,
		uint16_t	vmid,
		unsigned	stage,
		unsigned	level,
		bool	updStats = true
	)

Definition at line 1011 of file smmu_v3_caches.cc.

References ArmISA::asid, ArmISA::e, ArmISA::i, WalkCache::Entry::lastUsed, X86ISA::level, lookupsByStageLevel, missesByStageLevel, panic, pickSetIdx(), sets, SMMUv3BaseCache::totalLookups, totalLookupsByStageLevel, SMMUv3BaseCache::totalMisses, totalMissesByStageLevel, SMMUv3BaseCache::useStamp, and ArmISA::va.

Referenced by store(), and SMMUTranslationProcess::walkCacheLookup().

pickEntryIdxToReplace()

size_t WalkCache::pickEntryIdxToReplace ( const Set &  set, unsigned  stage, unsigned  level  )

private

Definition at line 1189 of file smmu_v3_caches.cc.

References associativity, ArmISA::i, SMMUv3BaseCache::insertions, insertionsByStageLevel, X86ISA::level, SMMUv3BaseCache::nextToReplace, panic, SMMUv3BaseCache::random, Random::random(), SMMUv3BaseCache::replacementPolicy, SMMU_CACHE_REPL_LRU, SMMU_CACHE_REPL_RANDOM, and SMMU_CACHE_REPL_ROUND_ROBIN.

Referenced by store().

pickSetIdx()

size_t WalkCache::pickSetIdx ( Addr  va, Addr  vaMask, unsigned  stage, unsigned  level  ) const

private

Definition at line 1161 of file smmu_v3_caches.cc.

References findLsbSet(), X86ISA::level, ArmISA::offset, offsets, panic, sizes, ArmISA::va, and WALK_CACHE_LEVELS.

Referenced by lookup(), and store().

regStats()

void WalkCache::regStats ( const std::string &  name )

overridevirtual

Reimplemented from SMMUv3BaseCache.

Definition at line 1225 of file smmu_v3_caches.cc.

References averageHitRateByStageLevel, averageLookupsByStageLevel, averageMissesByStageLevel, averageUpdatesByStageLevel, csprintf(), Stats::DataWrap< Derived, InfoProxyType >::desc(), Stats::DataWrap< Derived, InfoProxyType >::flags(), insertionsByStageLevel, MipsISA::l, name(), Stats::DataWrap< Derived, InfoProxyType >::name(), Stats::pdf, SMMUv3BaseCache::regStats(), ArmISA::s, simSeconds, totalLookupsByStageLevel, totalMissesByStageLevel, totalUpdatesByStageLevel, and WALK_CACHE_LEVELS.

Referenced by SMMUv3::regStats().

store()

void WalkCache::store

(

const Entry &

incoming

)

Definition at line 1054 of file smmu_v3_caches.cc.

References WalkCache::Entry::asid, WalkCache::Entry::lastUsed, WalkCache::Entry::level, lookup(), panic, pickEntryIdxToReplace(), pickSetIdx(), sets, WalkCache::Entry::stage, SMMUv3BaseCache::totalUpdates, totalUpdatesByStageLevel, updatesByStageLevel, WalkCache::Entry::va, WalkCache::Entry::valid, WalkCache::Entry::vaMask, WalkCache::Entry::vmid, and WALK_CACHE_LEVELS.

Referenced by SMMUTranslationProcess::walkCacheUpdate().

Member Data Documentation

associativity

size_t WalkCache::associativity

private

Definition at line 341 of file smmu_v3_caches.hh.

Referenced by pickEntryIdxToReplace(), and WalkCache().

averageHitRateByStageLevel

Stats::Formula WalkCache::averageHitRateByStageLevel[2][WALK_CACHE_LEVELS]

protected

Definition at line 333 of file smmu_v3_caches.hh.

Referenced by regStats().

averageLookupsByStageLevel

Stats::Formula WalkCache::averageLookupsByStageLevel[2][WALK_CACHE_LEVELS]

protected

Definition at line 322 of file smmu_v3_caches.hh.

Referenced by regStats().

averageMissesByStageLevel

Stats::Formula WalkCache::averageMissesByStageLevel[2][WALK_CACHE_LEVELS]

protected

Definition at line 326 of file smmu_v3_caches.hh.

Referenced by regStats().

averageUpdatesByStageLevel

Stats::Formula WalkCache::averageUpdatesByStageLevel[2][WALK_CACHE_LEVELS]

protected

Definition at line 330 of file smmu_v3_caches.hh.

Referenced by regStats().

insertionsByStageLevel

Stats::Scalar WalkCache::insertionsByStageLevel[2][WALK_CACHE_LEVELS]

protected

Definition at line 335 of file smmu_v3_caches.hh.

Referenced by pickEntryIdxToReplace(), and regStats().

lookupsByStageLevel

unsigned int WalkCache::lookupsByStageLevel[2][WALK_CACHE_LEVELS]

protected

Definition at line 321 of file smmu_v3_caches.hh.

Referenced by lookup().

missesByStageLevel

unsigned int WalkCache::missesByStageLevel[2][WALK_CACHE_LEVELS]

protected

Definition at line 325 of file smmu_v3_caches.hh.

Referenced by lookup().

offsets

std::array<unsigned, 2*WALK_CACHE_LEVELS> WalkCache::offsets

private

Definition at line 343 of file smmu_v3_caches.hh.

Referenced by pickSetIdx(), and WalkCache().

sets

std::vector<Set> WalkCache::sets

private

Definition at line 339 of file smmu_v3_caches.hh.

Referenced by invalidateAll(), invalidateASID(), invalidateVA(), invalidateVAA(), invalidateVMID(), lookup(), store(), and WalkCache().

sizes

std::array<unsigned, 2*WALK_CACHE_LEVELS> WalkCache::sizes

private

Definition at line 342 of file smmu_v3_caches.hh.

Referenced by pickSetIdx(), and WalkCache().

totalLookupsByStageLevel

Stats::Scalar WalkCache::totalLookupsByStageLevel[2][WALK_CACHE_LEVELS]

protected

Definition at line 323 of file smmu_v3_caches.hh.

Referenced by lookup(), and regStats().

totalMissesByStageLevel

Stats::Scalar WalkCache::totalMissesByStageLevel[2][WALK_CACHE_LEVELS]

protected

Definition at line 327 of file smmu_v3_caches.hh.

Referenced by lookup(), and regStats().

totalUpdatesByStageLevel

Stats::Scalar WalkCache::totalUpdatesByStageLevel[2][WALK_CACHE_LEVELS]

protected

Definition at line 331 of file smmu_v3_caches.hh.

Referenced by regStats(), and store().

updatesByStageLevel

unsigned int WalkCache::updatesByStageLevel[2][WALK_CACHE_LEVELS]

protected

Definition at line 329 of file smmu_v3_caches.hh.

Referenced by store().

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

• dev/arm/smmu_v3_caches.hh
• dev/arm/smmu_v3_caches.cc