#include <table_walker.hh>

Inheritance diagram for ArmISA::TableWalker:

Classes
class	DescriptorBase

class	L1Descriptor

class	L2Descriptor
	Level 2 page table descriptor. More...

class	LongDescriptor
	Long-descriptor format (LPAE) More...

class	WalkerState

Public Types
enum	GrainSize { Grain4KB = 12, Grain16KB = 14, Grain64KB = 16, ReservedGrain = 0 }

typedef ArmTableWalkerParams	Params

Public Types inherited from MemObject
typedef MemObjectParams	Params

Public Types inherited from ClockedObject
typedef ClockedObjectParams	Params
	Parameters of ClockedObject. More...

Public Types inherited from SimObject
typedef SimObjectParams	Params

Public Member Functions
	TableWalker (const Params *p)

virtual	~TableWalker ()

const Params *	params () const

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

bool	haveLPAE () const

bool	haveVirtualization () const

bool	haveLargeAsid64 () const

void	completeDrain ()
	Checks if all state is cleared and if so, completes drain. More...

DrainState	drain () override
	Notify an object that it needs to drain its state. More...

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

BaseMasterPort &	getMasterPort (const std::string &if_name, PortID idx=InvalidPortID) override
	Get a master port with a given name and index. More...

void	regStats () override
	Register statistics for this object. More...

Fault	walk (RequestPtr req, ThreadContext tc, uint16_t asid, uint8_t _vmid, bool _isHyp, TLB::Mode mode, TLB::Translation _trans, bool timing, bool functional, bool secure, TLB::ArmTranslationType tranType, bool _stage2Req)

void	setTlb (TLB *_tlb)

TLB *	getTlb ()

void	setMMU (Stage2MMU *m, MasterID master_id)

void	memAttrs (ThreadContext *tc, TlbEntry &te, SCTLR sctlr, uint8_t texcb, bool s)

void	memAttrsLPAE (ThreadContext *tc, TlbEntry &te, LongDescriptor &lDescriptor)

void	memAttrsAArch64 (ThreadContext *tc, TlbEntry &te, LongDescriptor &lDescriptor)

Public Member Functions inherited from MemObject
const Params *	params () const

	MemObject (const Params *params)

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

Public Member Functions inherited from ClockedObject
	ClockedObject (const ClockedObjectParams *p)

const Params *	params () const

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

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

Enums::PwrState	pwrState () const

std::string	pwrStateName () const

std::vector< double >	pwrStateWeights () const
	Returns the percentage residency for each power state. More...

void	computeStats ()
	Record stats values like state residency by computing the time difference from previous update. More...

void	pwrState (Enums::PwrState)

void	regStats () override
	Register statistics for this object. More...

Public Member Functions inherited from SimObject
const Params *	params () const

	SimObject (const Params *_params)

virtual	~SimObject ()

virtual const std::string	name () const

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	resetStats ()
	Reset statistics associated with this object. 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 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 EventManager
	EventManager (EventManager &em)

	EventManager (EventManager *em)

	EventManager (EventQueue *eq)

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)

void	setCurTick (Tick newVal)

Public Member Functions inherited from 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 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 Clocked
void	updateClockPeriod () const
	Update the tick to the current tick. More...

Tick	clockEdge (Cycles cycles=Cycles(0)) const
	Determine the tick when a cycle begins, by default the current one, but the argument also enables the caller to determine a future cycle. More...

Cycles	curCycle () const
	Determine the current cycle, corresponding to a tick aligned to a clock edge. More...

Tick	nextCycle () const
	Based on the clock of the object, determine the start tick of the first cycle that is at least one cycle in the future. More...

uint64_t	frequency () const

Tick	clockPeriod () const

double	voltage () const

Cycles	ticksToCycles (Tick t) const

Tick	cyclesToTicks (Cycles c) const

Static Public Member Functions
static LookupLevel	toLookupLevel (uint8_t lookup_level_as_int)

Static Public Member Functions inherited from SimObject
static void	serializeAll (CheckpointOut &cp)
	Serialize 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 Public Member Functions inherited from Serializable
static const std::string &	currentSection ()
	Get the fully-qualified name of the active section. More...

static void	serializeAll (const std::string &cpt_dir)

static void	unserializeGlobals (CheckpointIn &cp)

Protected Attributes
std::list< WalkerState * >	stateQueues [MAX_LOOKUP_LEVELS]
	Queues of requests for all the different lookup levels. More...

std::list< WalkerState * >	pendingQueue
	Queue of requests that have passed are waiting because the walker is currently busy. More...

Stage2MMU *	stage2Mmu
	The MMU to forward second stage look upts to. More...

DmaPort *	port
	Port shared by the two table walkers. More...

MasterID	masterId
	Master id assigned by the MMU. More...

const bool	isStage2
	Indicates whether this table walker is part of the stage 2 mmu. More...

TLB *	tlb
	TLB that is initiating these table walks. More...

SCTLR	sctlr
	Cached copy of the sctlr as it existed when translation began. More...

WalkerState *	currState

bool	pending
	If a timing translation is currently in progress. More...

unsigned	numSquashable
	The number of walks belonging to squashed instructions that can be removed from the pendingQueue per cycle. More...

bool	haveSecurity
	Cached copies of system-level properties. More...

bool	_haveLPAE

bool	_haveVirtualization

uint8_t	physAddrRange

bool	_haveLargeAsid64

Stats::Scalar	statWalks
	Statistics. More...

Stats::Scalar	statWalksShortDescriptor

Stats::Scalar	statWalksLongDescriptor

Stats::Vector	statWalksShortTerminatedAtLevel

Stats::Vector	statWalksLongTerminatedAtLevel

Stats::Scalar	statSquashedBefore

Stats::Scalar	statSquashedAfter

Stats::Histogram	statWalkWaitTime

Stats::Histogram	statWalkServiceTime

Stats::Histogram	statPendingWalks

Stats::Vector	statPageSizes

Stats::Vector2d	statRequestOrigin

unsigned	pendingReqs

Tick	pendingChangeTick

Protected Attributes inherited from ClockedObject
Enums::PwrState	_currPwrState
	To keep track of the current power state. More...

Tick	prvEvalTick

Stats::Scalar	numPwrStateTransitions

Stats::Distribution	pwrStateClkGateDist

Stats::Vector	pwrStateResidencyTicks

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

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

Static Protected Attributes
static const unsigned	REQUESTED = 0

static const unsigned	COMPLETED = 1

Private Member Functions
void	doL1Descriptor ()

void	doL1DescriptorWrapper ()

void	doL2Descriptor ()

void	doL2DescriptorWrapper ()

void	doLongDescriptor ()

void	doL0LongDescriptorWrapper ()

void	doL1LongDescriptorWrapper ()

void	doL2LongDescriptorWrapper ()

void	doL3LongDescriptorWrapper ()

void	doLongDescriptorWrapper (LookupLevel curr_lookup_level)

bool	fetchDescriptor (Addr descAddr, uint8_t data, int numBytes, Request::Flags flags, int queueIndex, Event event, void(TableWalker::*doDescriptor)())

void	insertTableEntry (DescriptorBase &descriptor, bool longDescriptor)

Fault	processWalk ()

Fault	processWalkLPAE ()

Fault	processWalkAArch64 ()

void	processWalkWrapper ()

void	nextWalk (ThreadContext *tc)

void	pendingChange ()

Fault	testWalk (Addr pa, Addr size, TlbEntry::DomainType domain, LookupLevel lookup_level)

Static Private Member Functions
static unsigned	adjustTableSizeAArch64 (unsigned tsz)

static bool	checkAddrSizeFaultAArch64 (Addr addr, int currPhysAddrRange)
	Returns true if the address exceeds the range permitted by the system-wide setting or by the TCR_ELx IPS/PS setting. More...

static uint8_t	pageSizeNtoStatBin (uint8_t N)

Additional Inherited Members
Static Public Attributes inherited from Serializable
static int	ckptCount = 0

static int	ckptMaxCount = 0

static int	ckptPrevCount = -1

Protected Member Functions inherited from Drainable
	Drainable ()

virtual	~Drainable ()

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

Protected Member Functions inherited from Clocked
	Clocked (ClockDomain &clk_domain)
	Create a clocked object and set the clock domain based on the parameters. More...

	Clocked (Clocked &)=delete

Clocked &	operator= (Clocked &)=delete

virtual	~Clocked ()
	Virtual destructor due to inheritance. More...

void	resetClock () const
	Reset the object's clock using the current global tick value. More...

Detailed Description

Definition at line 62 of file table_walker.hh.

Member Typedef Documentation

typedef ArmTableWalkerParams ArmISA::TableWalker::Params

Definition at line 877 of file table_walker.hh.

Member Enumeration Documentation

enum ArmISA::TableWalker::GrainSize

Enumerator
Grain4KB
Grain16KB
Grain64KB
ReservedGrain

Definition at line 366 of file table_walker.hh.

Constructor & Destructor Documentation

TableWalker::TableWalker ( const Params * p )

Definition at line 59 of file table_walker.cc.

References doL0LongDescEvent, doL1LongDescEvent, doL2LongDescEvent, and doL3LongDescEvent.

TableWalker::~TableWalker ( )

virtual

Definition at line 93 of file table_walker.cc.

Member Function Documentation

unsigned TableWalker::adjustTableSizeAArch64 ( unsigned tsz )

staticprivate

Definition at line 715 of file table_walker.cc.

Referenced by processWalkAArch64().

bool TableWalker::checkAddrSizeFaultAArch64	(	Addr	addr,
		int	currPhysAddrRange
	)

staticprivate

Returns true if the address exceeds the range permitted by the system-wide setting or by the TCR_ELx IPS/PS setting.

Definition at line 725 of file table_walker.cc.

References bits(), and ArmISA::MaxPhysAddrRange.

Referenced by doLongDescriptor().

void TableWalker::completeDrain ( )

Checks if all state is cleared and if so, completes drain.

Definition at line 140 of file table_walker.cc.

References DPRINTF, Draining, Drainable::drainState(), ArmISA::L0, ArmISA::L1, ArmISA::L2, ArmISA::L3, pendingQueue, Drainable::signalDrainDone(), and stateQueues.

Referenced by nextWalk().

void TableWalker::doL0LongDescriptorWrapper ( )

private

Definition at line 1854 of file table_walker.cc.

References doLongDescriptorWrapper().

void TableWalker::doL1Descriptor ( )

private

Todo:: : check sctlr.ha (bit[17]) if Hardware Access Flag is enabled if set, do l1.Desc.setAp0() instead of generating AccessFlag0

Definition at line 1416 of file table_walker.cc.

Referenced by doL1DescriptorWrapper(), and processWalk().

void TableWalker::doL1DescriptorWrapper ( )

private

Definition at line 1751 of file table_walker.cc.

void TableWalker::doL1LongDescriptorWrapper ( )

private

Definition at line 1860 of file table_walker.cc.

References doLongDescriptorWrapper(), and ArmISA::L1.

void TableWalker::doL2Descriptor ( )

private

Todo:: : check sctlr.ha (bit[17]) if Hardware Access Flag is enabled if set, do l2.Desc.setAp0() instead of generating AccessFlag0

Definition at line 1702 of file table_walker.cc.

Referenced by doL1Descriptor(), and doL2DescriptorWrapper().

void TableWalker::doL2DescriptorWrapper ( )

private

void TableWalker::doL2LongDescriptorWrapper ( )

private

Definition at line 1866 of file table_walker.cc.

References doLongDescriptorWrapper(), and ArmISA::L2.

void TableWalker::doL3LongDescriptorWrapper ( )

private

Definition at line 1872 of file table_walker.cc.

References doLongDescriptorWrapper(), and ArmISA::L3.

void TableWalker::doLongDescriptor ( )

private

Definition at line 1511 of file table_walker.cc.

Referenced by doLongDescriptorWrapper(), and processWalkLPAE().

void TableWalker::doLongDescriptorWrapper ( LookupLevel curr_lookup_level )

private

Definition at line 1878 of file table_walker.cc.

Referenced by doL0LongDescriptorWrapper(), doL1LongDescriptorWrapper(), doL2LongDescriptorWrapper(), and doL3LongDescriptorWrapper().

DrainState TableWalker::drain ( )

overridevirtual

Notify an object that it needs to drain its state.

If the object does not need further simulation to drain internal buffers, it returns DrainState::Drained and automatically switches to the Drained state. If the object needs more simulation, it returns DrainState::Draining and automatically enters the Draining state. Other return values are invalid.

Note: An object that has entered the Drained state can be disturbed by other objects in the system and consequently stop being drained. These perturbations are not visible in the drain state. The simulator therefore repeats the draining process until all objects return DrainState::Drained on the first call to drain().

Returns: DrainState::Drained if the object is drained at this point in time, DrainState::Draining if it needs further simulation.

Implements Drainable.

Definition at line 153 of file table_walker.cc.

References DPRINTF, Drained, Draining, ArmISA::i, ArmISA::MAX_LOOKUP_LEVELS, pendingQueue, and stateQueues.

void TableWalker::drainResume ( )

overridevirtual

Resume execution after a successful drain.

Reimplemented from Drainable.

Definition at line 174 of file table_walker.cc.

References currState, params(), and pendingChange().

bool TableWalker::fetchDescriptor	(	Addr	descAddr,
		uint8_t *	data,
		int	numBytes,
		Request::Flags	flags,
		int	queueIndex,
		Event *	event,
		void(TableWalker::*)()	doDescriptor
	)

private

Definition at line 1947 of file table_walker.cc.

References currState, Packet::dataStatic(), ContextSwitchTaskId::DMA, DmaPort::dmaAction(), DPRINTF, ArmISA::Stage2MMU::Stage2Translation::fault, ArmISA::TableWalker::WalkerState::fault, ArmISA::TableWalker::WalkerState::functional, ThreadContext::getCpuPtr(), masterId, ArmISA::TLB::MustBeOne, NoFault, port, ArmISA::Stage2MMU::readDataTimed(), ArmISA::Stage2MMU::readDataUntimed(), MemCmd::ReadReq, MasterPort::sendFunctional(), X86ISA::size(), stage2Mmu, ArmISA::TableWalker::WalkerState::stage2Req, ArmISA::TableWalker::WalkerState::stage2Tran, stateQueues, Request::taskId(), ArmISA::TableWalker::WalkerState::tc, ArmISA::TableWalker::WalkerState::timing, and ArmISA::TableWalker::WalkerState::vaddr.

Referenced by doL1Descriptor(), doLongDescriptor(), processWalk(), and processWalkLPAE().

BaseMasterPort & TableWalker::getMasterPort	(	const std::string &	if_name,
		PortID	idx = `InvalidPortID`
	)

overridevirtual

Get a master port with a given name and index.

This is used at binding time and returns a reference to a protocol-agnostic base master port.

Parameters

if_name	Port name
idx	Index in the case of a VectorPort

Returns: A reference to the given port

Reimplemented from MemObject.

Definition at line 115 of file table_walker.cc.

References fatal, MemObject::getMasterPort(), isStage2, and port.

TLB* ArmISA::TableWalker::getTlb ( )

inline

Definition at line 908 of file table_walker.hh.

References tlb.

bool ArmISA::TableWalker::haveLargeAsid64 ( ) const

inline

Definition at line 891 of file table_walker.hh.

References _haveLargeAsid64.

Referenced by ArmISA::TLB::TLB().

bool ArmISA::TableWalker::haveLPAE ( ) const

inline

Definition at line 889 of file table_walker.hh.

References _haveLPAE.

Referenced by ArmISA::TLB::TLB().

bool ArmISA::TableWalker::haveVirtualization ( ) const

inline

Definition at line 890 of file table_walker.hh.

References _haveVirtualization.

Referenced by ArmISA::TLB::TLB().

void TableWalker::init ( )

overridevirtual

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 SimObject.

Definition at line 107 of file table_walker.cc.

References fatal_if(), port, stage2Mmu, and tlb.

void TableWalker::insertTableEntry	(	DescriptorBase &	descriptor,
		bool	longDescriptor
	)

private

Definition at line 2019 of file table_walker.cc.

Referenced by doL1Descriptor(), doL2Descriptor(), and doLongDescriptor().

void TableWalker::memAttrs	(	ThreadContext *	tc,
		TlbEntry &	te,
		SCTLR	sctlr,
		uint8_t	texcb,
		bool	s
	)

void TableWalker::memAttrsAArch64	(	ThreadContext *	tc,
		TlbEntry &	te,
		LongDescriptor &	lDescriptor
	)

void TableWalker::memAttrsLPAE	(	ThreadContext *	tc,
		TlbEntry &	te,
		LongDescriptor &	lDescriptor
	)

Definition at line 1192 of file table_walker.cc.

References _haveLPAE, ArmISA::attr, ArmISA::TlbEntry::attributes, ArmISA::TableWalker::LongDescriptor::attrIndx(), bits(), currState, ArmISA::TlbEntry::Device, DPRINTF, ArmISA::flattenMiscRegNsBanked(), ArmISA::TlbEntry::innerAttrs, ArmISA::TableWalker::WalkerState::isSecure, ArmISA::TableWalker::LongDescriptor::memAttr(), ArmISA::MISCREG_MAIR0, ArmISA::MISCREG_MAIR1, ArmISA::TlbEntry::mtype, ArmISA::TlbEntry::nonCacheable, ArmISA::TlbEntry::Normal, ArmISA::TlbEntry::outerAttrs, ArmISA::TlbEntry::outerShareable, panic, ThreadContext::readMiscReg(), X86ISA::reg, ArmISA::TlbEntry::setAttributes(), ArmISA::TableWalker::LongDescriptor::sh(), ArmISA::sh, ArmISA::TlbEntry::shareable, ArmISA::TlbEntry::StronglyOrdered, and ArmISA::TableWalker::WalkerState::tc.

Referenced by insertTableEntry().

void TableWalker::nextWalk ( ThreadContext * tc )

private

Definition at line 1938 of file table_walker.cc.

References Clocked::clockEdge(), completeDrain(), doProcessEvent, pendingQueue, and EventManager::schedule().

Referenced by doL1DescriptorWrapper(), doL2DescriptorWrapper(), doLongDescriptorWrapper(), processWalk(), processWalkLPAE(), and processWalkWrapper().

uint8_t TableWalker::pageSizeNtoStatBin ( uint8_t N )

staticprivate

Definition at line 2142 of file table_walker.cc.

References panic.

Referenced by insertTableEntry().

const Params* ArmISA::TableWalker::params ( ) const

inline

Definition at line 882 of file table_walker.hh.

References SimObject::_params.

Referenced by drainResume().

void TableWalker::pendingChange ( )

private

Definition at line 2117 of file table_walker.cc.

References currState, curTick(), ArmISA::n, pendingChangeTick, pendingQueue, pendingReqs, Stats::DistBase< Derived, Stor >::sample(), and statPendingWalks.

Referenced by drainResume(), processWalkWrapper(), and walk().

Fault TableWalker::processWalk ( )

private

Definition at line 453 of file table_walker.cc.

Referenced by processWalkWrapper(), and walk().

Fault TableWalker::processWalkAArch64 ( )

private

Definition at line 732 of file table_walker.cc.

Referenced by processWalkWrapper(), and walk().

Fault TableWalker::processWalkLPAE ( )

private

Definition at line 551 of file table_walker.cc.

Referenced by processWalkWrapper(), and walk().

void TableWalker::processWalkWrapper ( )

private

Definition at line 356 of file table_walker.cc.

void TableWalker::regStats ( )

overridevirtual

Register statistics for this object.

Reimplemented from SimObject.

Definition at line 2162 of file table_walker.cc.

References Stats::DataWrap< Derived, InfoProxyType >::desc(), Stats::dist, Stats::DataWrap< Derived, InfoProxyType >::flags(), Stats::VectorBase< Derived, Stor >::init(), Stats::Vector2dBase< Derived, Stor >::init(), Stats::Histogram::init(), SimObject::name(), Stats::DataWrap< Derived, InfoProxyType >::name(), Stats::nonan, Stats::nozero, Stats::pdf, ClockedObject::regStats(), statPageSizes, statPendingWalks, statRequestOrigin, statSquashedAfter, statSquashedBefore, statWalks, statWalkServiceTime, statWalksLongDescriptor, statWalksLongTerminatedAtLevel, statWalksShortDescriptor, statWalksShortTerminatedAtLevel, statWalkWaitTime, Stats::DataWrapVec< Derived, InfoProxyType >::subname(), Stats::total, and Stats::DataWrapVec2d< Derived, InfoProxyType >::ysubname().

void TableWalker::setMMU	(	Stage2MMU *	m,
		MasterID	master_id
	)

Definition at line 99 of file table_walker.cc.

References ArmISA::Stage2MMU::getPort(), ArmISA::m, masterId, port, and stage2Mmu.

Referenced by ArmISA::TLB::setMMU().

void ArmISA::TableWalker::setTlb ( TLB * _tlb )

inline

Definition at line 907 of file table_walker.hh.

References tlb.

Referenced by ArmISA::TLB::TLB().

Fault TableWalker::testWalk	(	Addr	pa,
		Addr	size,
		TlbEntry::DomainType	domain,
		LookupLevel	lookup_level
	)

private

Definition at line 2133 of file table_walker.cc.

References currState, ArmISA::TableWalker::WalkerState::isSecure, ArmISA::TableWalker::WalkerState::mode, ArmISA::TLB::testWalk(), tlb, and ArmISA::TableWalker::WalkerState::vaddr.

Referenced by doL1Descriptor(), doLongDescriptor(), processWalk(), and processWalkLPAE().

LookupLevel TableWalker::toLookupLevel ( uint8_t lookup_level_as_int )

static

Definition at line 2100 of file table_walker.cc.

References ArmISA::L1, ArmISA::L2, ArmISA::L3, and panic.

Referenced by doLongDescriptor().

Fault TableWalker::walk	(	RequestPtr	req,
		ThreadContext *	tc,
		uint16_t	asid,
		uint8_t	_vmid,
		bool	_isHyp,
		TLB::Mode	mode,
		TLB::Translation *	_trans,
		bool	timing,
		bool	functional,
		bool	secure,
		TLB::ArmTranslationType	tranType,
		bool	_stage2Req
	)

Todo:: These should be cached or grabbed from cached copies in the TLB, all these miscreg reads are expensive

Definition at line 184 of file table_walker.cc.

Referenced by ArmISA::TLB::getTE().

Member Data Documentation

bool ArmISA::TableWalker::_haveLargeAsid64

protected

Definition at line 854 of file table_walker.hh.

Referenced by haveLargeAsid64().

bool ArmISA::TableWalker::_haveLPAE

protected

Definition at line 851 of file table_walker.hh.

Referenced by haveLPAE(), and memAttrsLPAE().

bool ArmISA::TableWalker::_haveVirtualization

protected

Definition at line 852 of file table_walker.hh.

Referenced by haveVirtualization(), and walk().

const unsigned ArmISA::TableWalker::COMPLETED = 1

staticprotected

Definition at line 874 of file table_walker.hh.

Referenced by insertTableEntry().

WalkerState* ArmISA::TableWalker::currState

protected

Definition at line 840 of file table_walker.hh.

Referenced by doL1Descriptor(), doL1DescriptorWrapper(), doL2Descriptor(), doL2DescriptorWrapper(), doLongDescriptor(), doLongDescriptorWrapper(), drainResume(), fetchDescriptor(), insertTableEntry(), memAttrs(), memAttrsAArch64(), memAttrsLPAE(), pendingChange(), processWalk(), processWalkAArch64(), processWalkLPAE(), processWalkWrapper(), testWalk(), and walk().

EventWrapper<TableWalker, &TableWalker::doL0LongDescriptorWrapper> ArmISA::TableWalker::doL0LongDescEvent

private

Definition at line 935 of file table_walker.hh.

Referenced by TableWalker().

EventWrapper<TableWalker, &TableWalker::doL1DescriptorWrapper> ArmISA::TableWalker::doL1DescEvent

private

Definition at line 924 of file table_walker.hh.

Referenced by processWalk().

EventWrapper<TableWalker, &TableWalker::doL1LongDescriptorWrapper> ArmISA::TableWalker::doL1LongDescEvent

private

Definition at line 938 of file table_walker.hh.

Referenced by TableWalker().

EventWrapper<TableWalker, &TableWalker::doL2DescriptorWrapper> ArmISA::TableWalker::doL2DescEvent

private

Definition at line 929 of file table_walker.hh.

Referenced by doL1Descriptor().

EventWrapper<TableWalker, &TableWalker::doL2LongDescriptorWrapper> ArmISA::TableWalker::doL2LongDescEvent

private

Definition at line 941 of file table_walker.hh.

Referenced by TableWalker().

EventWrapper<TableWalker, &TableWalker::doL3LongDescriptorWrapper> ArmISA::TableWalker::doL3LongDescEvent

private

Definition at line 944 of file table_walker.hh.

Referenced by TableWalker().

EventWrapper<TableWalker, &TableWalker::processWalkWrapper> ArmISA::TableWalker::doProcessEvent

private

Definition at line 963 of file table_walker.hh.

Referenced by nextWalk().

bool ArmISA::TableWalker::haveSecurity

protected

Cached copies of system-level properties.

Definition at line 850 of file table_walker.hh.

Referenced by insertTableEntry(), processWalk(), and walk().

const bool ArmISA::TableWalker::isStage2

protected

Indicates whether this table walker is part of the stage 2 mmu.

Definition at line 832 of file table_walker.hh.

Referenced by doL1Descriptor(), doL2Descriptor(), doLongDescriptor(), getMasterPort(), insertTableEntry(), processWalk(), processWalkAArch64(), processWalkLPAE(), processWalkWrapper(), and walk().

Event* ArmISA::TableWalker::LongDescEventByLevel[4]

private

Definition at line 947 of file table_walker.hh.

Referenced by doLongDescriptor(), and processWalkLPAE().

MasterID ArmISA::TableWalker::masterId

protected

Master id assigned by the MMU.

Definition at line 829 of file table_walker.hh.

Referenced by fetchDescriptor(), and setMMU().

unsigned ArmISA::TableWalker::numSquashable

protected

The number of walks belonging to squashed instructions that can be removed from the pendingQueue per cycle.

Definition at line 847 of file table_walker.hh.

Referenced by processWalkWrapper().

bool ArmISA::TableWalker::pending

protected

If a timing translation is currently in progress.

Definition at line 843 of file table_walker.hh.

Referenced by doL1DescriptorWrapper(), doL2DescriptorWrapper(), doLongDescriptorWrapper(), processWalk(), processWalkLPAE(), processWalkWrapper(), and walk().

Tick ArmISA::TableWalker::pendingChangeTick

mutableprotected

Definition at line 871 of file table_walker.hh.

Referenced by pendingChange().

std::list<WalkerState *> ArmISA::TableWalker::pendingQueue

protected

Queue of requests that have passed are waiting because the walker is currently busy.

Definition at line 820 of file table_walker.hh.

Referenced by completeDrain(), drain(), nextWalk(), pendingChange(), processWalkWrapper(), and walk().

unsigned ArmISA::TableWalker::pendingReqs

mutableprotected

Definition at line 870 of file table_walker.hh.

Referenced by pendingChange().

uint8_t ArmISA::TableWalker::physAddrRange

protected

Definition at line 853 of file table_walker.hh.

Referenced by walk().

DmaPort* ArmISA::TableWalker::port

protected

Port shared by the two table walkers.

Definition at line 826 of file table_walker.hh.

Referenced by fetchDescriptor(), getMasterPort(), init(), and setMMU().

const unsigned ArmISA::TableWalker::REQUESTED = 0

staticprotected

Definition at line 873 of file table_walker.hh.

Referenced by walk().

SCTLR ArmISA::TableWalker::sctlr

protected

Cached copy of the sctlr as it existed when translation began.

Definition at line 838 of file table_walker.hh.

Referenced by walk().

Stage2MMU* ArmISA::TableWalker::stage2Mmu

protected

The MMU to forward second stage look upts to.

Definition at line 823 of file table_walker.hh.

Referenced by fetchDescriptor(), init(), and setMMU().

std::list<WalkerState *> ArmISA::TableWalker::stateQueues[MAX_LOOKUP_LEVELS]

protected

Queues of requests for all the different lookup levels.

Definition at line 816 of file table_walker.hh.

Referenced by completeDrain(), doL1DescriptorWrapper(), doL2DescriptorWrapper(), doLongDescriptorWrapper(), drain(), and fetchDescriptor().

Stats::Vector ArmISA::TableWalker::statPageSizes

protected

Definition at line 867 of file table_walker.hh.

Referenced by insertTableEntry(), and regStats().

Stats::Histogram ArmISA::TableWalker::statPendingWalks

protected

Definition at line 866 of file table_walker.hh.

Referenced by pendingChange(), and regStats().

Stats::Vector2d ArmISA::TableWalker::statRequestOrigin

protected

Definition at line 868 of file table_walker.hh.

Referenced by insertTableEntry(), regStats(), and walk().

Stats::Scalar ArmISA::TableWalker::statSquashedAfter

protected

Definition at line 863 of file table_walker.hh.

Referenced by regStats().

Stats::Scalar ArmISA::TableWalker::statSquashedBefore

protected

Definition at line 862 of file table_walker.hh.

Referenced by processWalkWrapper(), regStats(), and walk().

Stats::Scalar ArmISA::TableWalker::statWalks

protected

Statistics.

Definition at line 857 of file table_walker.hh.

Referenced by regStats(), and walk().

Stats::Histogram ArmISA::TableWalker::statWalkServiceTime

protected

Definition at line 865 of file table_walker.hh.

Referenced by doL1DescriptorWrapper(), doL2DescriptorWrapper(), doLongDescriptorWrapper(), processWalkWrapper(), and regStats().

Stats::Scalar ArmISA::TableWalker::statWalksLongDescriptor

protected

Definition at line 859 of file table_walker.hh.

Referenced by regStats(), and walk().

Stats::Vector ArmISA::TableWalker::statWalksLongTerminatedAtLevel

protected

Definition at line 861 of file table_walker.hh.

Referenced by doLongDescriptorWrapper(), and regStats().

Stats::Scalar ArmISA::TableWalker::statWalksShortDescriptor

protected

Definition at line 858 of file table_walker.hh.

Referenced by regStats(), and walk().

Stats::Vector ArmISA::TableWalker::statWalksShortTerminatedAtLevel

protected

Definition at line 860 of file table_walker.hh.

Referenced by doL1DescriptorWrapper(), doL2DescriptorWrapper(), and regStats().

Stats::Histogram ArmISA::TableWalker::statWalkWaitTime

protected

Definition at line 864 of file table_walker.hh.

Referenced by processWalk(), processWalkAArch64(), processWalkLPAE(), and regStats().

TLB* ArmISA::TableWalker::tlb

protected

TLB that is initiating these table walks.

Definition at line 835 of file table_walker.hh.

Referenced by doL1DescriptorWrapper(), doL2DescriptorWrapper(), doLongDescriptorWrapper(), getTlb(), init(), insertTableEntry(), processWalkWrapper(), setTlb(), and testWalk().

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

arch/arm/table_walker.hh
arch/arm/table_walker.cc

Private Attributes
EventWrapper< TableWalker,&TableWalker::doL1DescriptorWrapper >	doL1DescEvent

EventWrapper< TableWalker,&TableWalker::doL2DescriptorWrapper >	doL2DescEvent

EventWrapper< TableWalker,&TableWalker::doL0LongDescriptorWrapper >	doL0LongDescEvent

EventWrapper< TableWalker,&TableWalker::doL1LongDescriptorWrapper >	doL1LongDescEvent

EventWrapper< TableWalker,&TableWalker::doL2LongDescriptorWrapper >	doL2LongDescEvent

EventWrapper< TableWalker,&TableWalker::doL3LongDescriptorWrapper >	doL3LongDescEvent

Event *	LongDescEventByLevel [4]

EventWrapper< TableWalker,&TableWalker::processWalkWrapper >	doProcessEvent

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