#include <mmu.hh>

Inheritance diagram for gem5::ArmISA::MMU:

Classes
struct	CachedState

struct	Stats

Public Types
enum	ArmFlags { AlignmentMask = 0x7, AlignByte = 0x0, AlignHalfWord = 0x1, AlignWord = 0x2, AlignDoubleWord = 0x3, AlignQuadWord = 0x4, AlignOctWord = 0x5, AllowUnaligned = 0x8, UserMode = 0x10 }

enum	ArmTranslationType { NormalTran = 0, S1CTran = 0x1, HypMode = 0x2, S1S2NsTran = 0x4, S1E0Tran = 0x8, S1E1Tran = 0x10, S1E2Tran = 0x20, S1E3Tran = 0x40, S12E0Tran = 0x80, S12E1Tran = 0x100 }

Public Types inherited from gem5::BaseMMU
enum	Mode { Read, Write, Execute }

Public Types inherited from gem5::SimObject
typedef SimObjectParams	Params

Public Member Functions
TranslationGenPtr	translateFunctional (Addr start, Addr size, ThreadContext *tc, Mode mode, Request::Flags flags) override
	Returns a translation generator for a region of virtual addresses, instead of directly translating a specific address. More...

	MMU (const ArmMMUParams &p)

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

bool	translateFunctional (ThreadContext *tc, Addr vaddr, Addr &paddr)
	Do a functional lookup on the TLB (for debugging) and don't modify any internal state. More...

Fault	translateFunctional (const RequestPtr &req, ThreadContext *tc, BaseMMU::Mode mode) override

Fault	translateFunctional (const RequestPtr &req, ThreadContext *tc, BaseMMU::Mode mode, ArmTranslationType tran_type)
	Do a functional lookup on the TLB (for checker cpu) that behaves like a normal lookup without modifying any page table state. More...

Fault	translateFunctional (const RequestPtr &req, ThreadContext *tc, BaseMMU::Mode mode, ArmTranslationType tran_type, bool stage2)

Fault	translateAtomic (const RequestPtr &req, ThreadContext *tc, Mode mode) override

Fault	translateAtomic (const RequestPtr &req, ThreadContext *tc, BaseMMU::Mode mode, ArmTranslationType tran_type, bool stage2)

Fault	translateAtomic (const RequestPtr &req, ThreadContext *tc, Mode mode, ArmTranslationType tran_type)

void	translateTiming (const RequestPtr &req, ThreadContext tc, Translation translation, Mode mode) override

void	translateTiming (const RequestPtr &req, ThreadContext tc, BaseMMU::Translation translation, BaseMMU::Mode mode, bool stage2)

void	translateTiming (const RequestPtr &req, ThreadContext tc, Translation translation, Mode mode, ArmTranslationType tran_type, bool stage2)

Fault	translateMmuOff (ThreadContext *tc, const RequestPtr &req, Mode mode, ArmTranslationType tran_type, Addr vaddr, bool long_desc_format, CachedState &state)

Fault	translateMmuOn (ThreadContext tc, const RequestPtr &req, Mode mode, Translation translation, bool &delay, bool timing, bool functional, Addr vaddr, ArmFault::TranMethod tranMethod, CachedState &state)

Fault	translateFs (const RequestPtr &req, ThreadContext tc, Mode mode, Translation translation, bool &delay, bool timing, ArmTranslationType tran_type, bool functional, CachedState &state)

Fault	translateSe (const RequestPtr &req, ThreadContext tc, Mode mode, Translation translation, bool &delay, bool timing, CachedState &state)

Fault	translateComplete (const RequestPtr &req, ThreadContext tc, Translation translation, Mode mode, ArmTranslationType tran_type, bool call_from_s2)

Fault	translateComplete (const RequestPtr &req, ThreadContext tc, Translation translation, Mode mode, ArmTranslationType tran_type, bool call_from_s2, CachedState &state)

Fault	finalizePhysical (const RequestPtr &req, ThreadContext *tc, Mode mode) const override

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

void	takeOverFrom (BaseMMU *old_mmu) override

void	invalidateMiscReg ()

template<typename OP >
void	flush (const OP &tlbi_op)

template<typename OP >
void	flushStage1 (const OP &tlbi_op)

template<typename OP >
void	flushStage2 (const OP &tlbi_op)

template<typename OP >
void	iflush (const OP &tlbi_op)

template<typename OP >
void	dflush (const OP &tlbi_op)

void	flushAll () override

uint64_t	getAttr () const

void	setAttr (uint64_t attr)
	Accessor functions for memory attributes for last accessed TLB entry. More...

const ArmRelease *	release () const

bool	hasWalkCache () const

TlbEntry *	lookup (Addr vpn, uint16_t asn, vmid_t vmid, bool hyp, bool secure, bool functional, bool ignore_asn, ExceptionLevel target_el, bool in_host, bool stage2, BaseMMU::Mode mode)
	Lookup an entry in the TLB. More...

Fault	getTE (TlbEntry *te, const RequestPtr &req, ThreadContext tc, Mode mode, Translation *translation, bool timing, bool functional, bool is_secure, ArmTranslationType tran_type, bool stage2)

Fault	getTE (TlbEntry *te, const RequestPtr &req, ThreadContext tc, Mode mode, Translation *translation, bool timing, bool functional, bool is_secure, ArmTranslationType tran_type, CachedState &state)

Fault	getResultTe (TlbEntry *te, const RequestPtr &req, ThreadContext tc, Mode mode, Translation translation, bool timing, bool functional, TlbEntry mergeTe, CachedState &state)

Fault	checkPermissions (TlbEntry *te, const RequestPtr &req, Mode mode, bool stage2)

Fault	checkPermissions (TlbEntry *te, const RequestPtr &req, Mode mode, CachedState &state)

Fault	checkPermissions64 (TlbEntry te, const RequestPtr &req, Mode mode, ThreadContext tc, bool stage2)

Fault	checkPermissions64 (TlbEntry te, const RequestPtr &req, Mode mode, ThreadContext tc, CachedState &state)

void	setTestInterface (SimObject *ti)

Fault	testTranslation (const RequestPtr &req, Mode mode, TlbEntry::DomainType domain, CachedState &state)

Fault	testWalk (Addr pa, Addr size, Addr va, bool is_secure, Mode mode, TlbEntry::DomainType domain, LookupLevel lookup_level, bool stage2)

Fault	testWalk (Addr pa, Addr size, Addr va, bool is_secure, Mode mode, TlbEntry::DomainType domain, LookupLevel lookup_level, CachedState &state)

virtual Fault	translateFunctional (const RequestPtr &req, ThreadContext *tc, Mode mode)

virtual TranslationGenPtr	translateFunctional (Addr start, Addr size, ThreadContext *tc, BaseMMU::Mode mode, Request::Flags flags)=0
	Returns a translation generator for a region of virtual addresses, instead of directly translating a specific address. More...

Public Member Functions inherited from gem5::BaseMMU
void	init () override
	Called at init time, this method is traversing the TLB hierarchy and pupulating the instruction/data/unified containers accordingly. More...

void	demapPage (Addr vaddr, uint64_t asn)

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

Static Public Member Functions
static ExceptionLevel	tranTypeEL (CPSR cpsr, ArmTranslationType type)
	Determine the EL to use for the purpose of a translation given a specific translation type. More...

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...

Public Attributes
TlbTestInterface *	test

CachedState	s1State

CachedState	s2State

Public Attributes inherited from gem5::BaseMMU
BaseTLB *	dtb

BaseTLB *	itb

Protected Types
using	LookupLevel = enums::ArmLookupLevel

Protected Types inherited from gem5::BaseMMU
typedef BaseMMUParams	Params

Protected Member Functions
ArmISA::TLB *	getDTBPtr () const

ArmISA::TLB *	getITBPtr () const

TLB *	getTlb (BaseMMU::Mode mode, bool stage2) const

TableWalker *	getTableWalker (BaseMMU::Mode mode, bool stage2) const

bool	checkPAN (ThreadContext *tc, uint8_t ap, const RequestPtr &req, Mode mode, const bool is_priv, CachedState &state)

bool	faultPAN (ThreadContext *tc, uint8_t ap, const RequestPtr &req, Mode mode, const bool is_priv, CachedState &state)

std::pair< bool, bool >	s1PermBits64 (TlbEntry te, const RequestPtr &req, Mode mode, ThreadContext tc, CachedState &state, bool r, bool w, bool x)

std::pair< bool, bool >	s2PermBits64 (TlbEntry te, const RequestPtr &req, Mode mode, ThreadContext tc, CachedState &state, bool r, bool w, bool x)

bool	checkWalkCache () const

bool	isCompleteTranslation (TlbEntry *te) const

CachedState &	updateMiscReg (ThreadContext *tc, ArmTranslationType tran_type, bool stage2)

Protected Member Functions inherited from gem5::BaseMMU
	BaseMMU (const Params &p)

BaseTLB *	getTlb (Mode mode) const

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

virtual	~Drainable ()

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

Protected Attributes
TLB *	itbStage2

TLB *	dtbStage2

TableWalker *	itbWalker

TableWalker *	dtbWalker

TableWalker *	itbStage2Walker

TableWalker *	dtbStage2Walker

ContextID	miscRegContext

uint64_t	_attr

const ArmRelease *	_release

bool	haveLargeAsid64

uint8_t	physAddrRange

AddrRange	m5opRange

bool	_hasWalkCache

gem5::ArmISA::MMU::Stats	stats

Protected Attributes inherited from gem5::BaseMMU
std::set< BaseTLB * >	instruction
	It is possible from the MMU to traverse the entire hierarchy of TLBs, starting from the DTB and ITB (generally speaking from the first level) up to the last level via the nextLevel pointer. More...

std::set< BaseTLB * >	data

std::set< BaseTLB * >	unified

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 59 of file mmu.hh.

Member Typedef Documentation

◆ LookupLevel

using gem5::ArmISA::MMU::LookupLevel = enums::ArmLookupLevel

protected

Definition at line 62 of file mmu.hh.

Member Enumeration Documentation

◆ ArmFlags

enum gem5::ArmISA::MMU::ArmFlags

Enumerator
AlignmentMask
AlignByte
AlignHalfWord
AlignWord
AlignDoubleWord
AlignQuadWord
AlignOctWord
AllowUnaligned
UserMode

Definition at line 97 of file mmu.hh.

◆ ArmTranslationType

enum gem5::ArmISA::MMU::ArmTranslationType

Enumerator
NormalTran
S1CTran
HypMode
S1S2NsTran
S1E0Tran
S1E1Tran
S1E2Tran
S1E3Tran
S12E0Tran
S12E1Tran

Definition at line 113 of file mmu.hh.

Constructor & Destructor Documentation

◆ MMU()

gem5::MMU::MMU ( const ArmMMUParams & p )

Definition at line 59 of file mmu.cc.

References _release, gem5::FullSystem, gem5::ArmSystem::haveLargeAsid64(), haveLargeAsid64, m5opRange, gem5::MipsISA::p, gem5::ArmSystem::physAddrRange(), physAddrRange, and gem5::ArmSystem::releaseFS().

Member Function Documentation

◆ checkPAN()

bool gem5::MMU::checkPAN	(	ThreadContext *	tc,
		uint8_t	ap,
		const RequestPtr &	req,
		Mode	mode,
		const bool	is_priv,
		CachedState &	state
	)

protected

Definition at line 763 of file mmu.cc.

References gem5::Request::CACHE_BLOCK_ZERO, gem5::ArmISA::MMU::CachedState::cpsr, gem5::BaseMMU::Execute, gem5::ArmISA::MMU::CachedState::hcr, gem5::ArmISA::MISCREG_ID_AA64MMFR1_EL1, gem5::ArmISA::mode, and gem5::ThreadContext::readMiscReg().

Referenced by faultPAN().

◆ checkPermissions() [1/2]

Fault gem5::MMU::checkPermissions	(	TlbEntry *	te,
		const RequestPtr &	req,
		Mode	mode,
		bool	stage2
	)

Definition at line 274 of file mmu.cc.

References gem5::ArmISA::mode, s1State, s2State, and gem5::ArmISA::te.

Referenced by getResultTe(), and gem5::ArmISA::Stage2LookUp::getTe().

◆ checkPermissions() [2/2]

Fault gem5::MMU::checkPermissions	(	TlbEntry *	te,
		const RequestPtr &	req,
		Mode	mode,
		CachedState &	state
	)

Definition at line 281 of file mmu.cc.

◆ checkPermissions64() [1/2]

Fault gem5::MMU::checkPermissions64	(	TlbEntry *	te,
		const RequestPtr &	req,
		Mode	mode,
		ThreadContext *	tc,
		bool	stage2
	)

Definition at line 460 of file mmu.cc.

References gem5::ArmISA::mode, s1State, s2State, and gem5::ArmISA::te.

Referenced by getResultTe(), and gem5::ArmISA::Stage2LookUp::getTe().

◆ checkPermissions64() [2/2]

Fault gem5::MMU::checkPermissions64	(	TlbEntry *	te,
		const RequestPtr &	req,
		Mode	mode,
		ThreadContext *	tc,
		CachedState &	state
	)

Definition at line 467 of file mmu.cc.

◆ checkWalkCache()

bool gem5::MMU::checkWalkCache ( ) const

protected

Definition at line 111 of file mmu.cc.

References gem5::BaseMMU::data, gem5::BaseMMU::instruction, gem5::ArmISA::tlb, and gem5::BaseMMU::unified.

Referenced by init().

◆ dflush()

template<typename OP >

void gem5::ArmISA::MMU::dflush ( const OP & tlbi_op )

inline

Definition at line 313 of file mmu.hh.

References gem5::BaseMMU::data, flush(), gem5::ArmISA::tlb, and gem5::BaseMMU::unified.

Referenced by gem5::ArmISA::DTLBIALL::operator()(), gem5::ArmISA::DTLBIASID::operator()(), and gem5::ArmISA::DTLBIMVA::operator()().

◆ drainResume()

void gem5::MMU::drainResume ( )

overridevirtual

Resume execution after a successful drain.

Reimplemented from gem5::Drainable.

Definition at line 130 of file mmu.cc.

References gem5::ArmISA::MMU::CachedState::miscRegValid, s1State, and s2State.

◆ faultPAN()

bool gem5::MMU::faultPAN	(	ThreadContext *	tc,
		uint8_t	ap,
		const RequestPtr &	req,
		Mode	mode,
		const bool	is_priv,
		CachedState &	state
	)

protected

Definition at line 738 of file mmu.cc.

References gem5::ArmISA::MMU::CachedState::aarch64EL, checkPAN(), gem5::ArmISA::EL0, gem5::ArmISA::EL1, gem5::ArmISA::EL2, gem5::ArmISA::EL3, gem5::ArmISA::MMU::CachedState::hcr, and gem5::ArmISA::mode.

Referenced by s1PermBits64().

◆ finalizePhysical()

Fault gem5::MMU::finalizePhysical	(	const RequestPtr &	req,
		ThreadContext *	tc,
		Mode	mode
	)		const

overridevirtual

Reimplemented from gem5::BaseMMU.

Definition at line 203 of file mmu.cc.

References gem5::AddrRange::contains(), gem5::pseudo_inst::decodeAddrOffset(), gem5::ArmISA::inAArch64(), m5opRange, gem5::ArmISA::mode, gem5::NoFault, gem5::BaseMMU::Read, gem5::Packet::setLE(), and gem5::AddrRange::start().

Referenced by translateMmuOn(), and translateSe().

◆ flush()

template<typename OP >

void gem5::ArmISA::MMU::flush ( const OP & tlbi_op )

inline

Definition at line 265 of file mmu.hh.

References flushStage1(), and flushStage2().

Referenced by dflush(), flushStage1(), iflush(), gem5::ArmISA::TLBIALL::operator()(), gem5::ArmISA::TLBIALLEL::operator()(), gem5::ArmISA::TLBIVMALL::operator()(), and gem5::ArmISA::TLBIALLN::operator()().

◆ flushAll()

void gem5::ArmISA::MMU::flushAll ( )

inlineoverridevirtual

Reimplemented from gem5::BaseMMU.

Definition at line 324 of file mmu.hh.

References dtbStage2, gem5::BaseMMU::flushAll(), gem5::ArmISA::TLB::flushAll(), and itbStage2.

◆ flushStage1()

template<typename OP >

void gem5::ArmISA::MMU::flushStage1 ( const OP & tlbi_op )

inline

Definition at line 278 of file mmu.hh.

References gem5::BaseMMU::data, flush(), gem5::BaseMMU::instruction, gem5::ArmISA::tlb, and gem5::BaseMMU::unified.

Referenced by flush(), gem5::ArmISA::TLBIASID::operator()(), gem5::ArmISA::TLBIMVAA::operator()(), and gem5::ArmISA::TLBIMVA::operator()().

◆ flushStage2()

template<typename OP >

void gem5::ArmISA::MMU::flushStage2 ( const OP & tlbi_op )

inline

Definition at line 293 of file mmu.hh.

References dtbStage2, gem5::ArmISA::TLB::flush(), and itbStage2.

Referenced by flush(), and gem5::ArmISA::TLBIIPA::operator()().

◆ getAttr()

uint64_t gem5::ArmISA::MMU::getAttr ( ) const

inline

Definition at line 332 of file mmu.hh.

References _attr.

Referenced by gem5::ArmISA::ISA::addressTranslation(), and gem5::ArmISA::ISA::addressTranslation64().

◆ getDTBPtr()

ArmISA::TLB* gem5::ArmISA::MMU::getDTBPtr ( ) const

inlineprotected

Definition at line 65 of file mmu.hh.

References gem5::BaseMMU::dtb.

Referenced by getTlb(), and init().

◆ getITBPtr()

ArmISA::TLB* gem5::ArmISA::MMU::getITBPtr ( ) const

inlineprotected

Definition at line 71 of file mmu.hh.

References gem5::BaseMMU::itb.

Referenced by getTlb(), and init().

◆ getResultTe()

Fault gem5::MMU::getResultTe	(	TlbEntry **	te,
		const RequestPtr &	req,
		ThreadContext *	tc,
		Mode	mode,
		Translation *	translation,
		bool	timing,
		bool	functional,
		TlbEntry *	mergeTe,
		CachedState &	state
	)

◆ getTableWalker()

TableWalker * gem5::MMU::getTableWalker	(	BaseMMU::Mode	mode,
		bool	stage2
	)		const

protected

Definition at line 153 of file mmu.cc.

References dtbStage2Walker, dtbWalker, gem5::BaseMMU::Execute, itbStage2Walker, itbWalker, and gem5::ArmISA::mode.

Referenced by getTE().

◆ getTE() [1/2]

Fault gem5::MMU::getTE	(	TlbEntry **	te,
		const RequestPtr &	req,
		ThreadContext *	tc,
		Mode	mode,
		Translation *	translation,
		bool	timing,
		bool	functional,
		bool	is_secure,
		ArmTranslationType	tran_type,
		bool	stage2
	)

Definition at line 1397 of file mmu.cc.

References gem5::ArmISA::mode, s1State, s2State, and gem5::ArmISA::te.

Referenced by gem5::ArmISA::Stage2LookUp::finish(), getResultTe(), and gem5::ArmISA::Stage2LookUp::getTe().

◆ getTE() [2/2]

Fault gem5::MMU::getTE	(	TlbEntry **	te,
		const RequestPtr &	req,
		ThreadContext *	tc,
		Mode	mode,
		Translation *	translation,
		bool	timing,
		bool	functional,
		bool	is_secure,
		ArmTranslationType	tran_type,
		CachedState &	state
	)

◆ getTlb()

TLB * gem5::MMU::getTlb	(	BaseMMU::Mode	mode,
		bool	stage2
	)		const

protected

Definition at line 137 of file mmu.cc.

References dtbStage2, gem5::BaseMMU::Execute, getDTBPtr(), getITBPtr(), itbStage2, and gem5::ArmISA::mode.

Referenced by lookup(), and translateFunctional().

◆ hasWalkCache()

bool gem5::ArmISA::MMU::hasWalkCache ( ) const

inline

Definition at line 347 of file mmu.hh.

References _hasWalkCache.

Referenced by gem5::ArmISA::TableWalker::doLongDescriptor().

◆ iflush()

template<typename OP >

void gem5::ArmISA::MMU::iflush ( const OP & tlbi_op )

inline

Definition at line 301 of file mmu.hh.

References flush(), gem5::BaseMMU::instruction, gem5::ArmISA::tlb, and gem5::BaseMMU::unified.

Referenced by gem5::ArmISA::ITLBIALL::operator()(), gem5::ArmISA::ITLBIASID::operator()(), and gem5::ArmISA::ITLBIMVA::operator()().

◆ init()

void gem5::MMU::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 gem5::SimObject.

Definition at line 92 of file mmu.cc.

References _hasWalkCache, checkWalkCache(), dtbStage2, dtbStage2Walker, dtbWalker, getDTBPtr(), getITBPtr(), gem5::BaseMMU::init(), itbStage2, itbStage2Walker, itbWalker, gem5::ArmISA::TableWalker::setMmu(), and gem5::ArmISA::TLB::setTableWalker().

◆ invalidateMiscReg()

void gem5::MMU::invalidateMiscReg ( )

Definition at line 197 of file mmu.cc.

References gem5::ArmISA::MMU::CachedState::miscRegValid, and s1State.

Referenced by gem5::ArmISA::ISA::clear(), and gem5::ArmISA::ISA::setMiscReg().

◆ isCompleteTranslation()

bool gem5::MMU::isCompleteTranslation ( TlbEntry * te ) const

protected

Definition at line 1563 of file mmu.cc.

References gem5::ArmISA::TlbEntry::partial.

Referenced by getResultTe(), getTE(), and translateMmuOn().

◆ lookup()

TlbEntry * gem5::MMU::lookup	(	Addr	vpn,
		uint16_t	asn,
		vmid_t	vmid,
		bool	hyp,
		bool	secure,
		bool	functional,
		bool	ignore_asn,
		ExceptionLevel	target_el,
		bool	in_host,
		bool	stage2,
		BaseMMU::Mode	mode
	)

Lookup an entry in the TLB.

Parameters

vpn	virtual address
asn	context id/address space id to use
vmid	The virtual machine ID used for stage 2 translation
secure	if the lookup is secure
hyp	if the lookup is done from hyp mode
functional	if the lookup should modify state
ignore_asn	if on lookup asn should be ignored
target_el	selecting the translation regime
in_host	if we are in host (EL2&0 regime)
mode	to differentiate between read/writes/fetches.

Returns: pointer to TLB entry if it exists

Definition at line 1407 of file mmu.cc.

References gem5::ArmISA::asid, gem5::ArmISA::TlbEntry::Lookup::asn, gem5::ArmISA::TlbEntry::Lookup::functional, getTlb(), gem5::ArmISA::TlbEntry::Lookup::hyp, gem5::ArmISA::TlbEntry::Lookup::ignoreAsn, gem5::ArmISA::TlbEntry::Lookup::inHost, gem5::ArmISA::mode, gem5::ArmISA::TlbEntry::Lookup::mode, gem5::ArmISA::TlbEntry::Lookup::secure, gem5::ArmISA::TlbEntry::Lookup::targetEL, gem5::ArmISA::tlb, gem5::ArmISA::TlbEntry::Lookup::va, gem5::ArmISA::va, and gem5::ArmISA::TlbEntry::Lookup::vmid.

Referenced by getTE(), and gem5::ArmISA::TableWalker::processWalkWrapper().

◆ release()

const ArmRelease* gem5::ArmISA::MMU::release ( ) const

inline

Definition at line 345 of file mmu.hh.

References _release.

Referenced by gem5::ArmISA::TableWalker::setMmu().

◆ s1PermBits64()

std::pair< bool, bool > gem5::MMU::s1PermBits64	(	TlbEntry *	te,
		const RequestPtr &	req,
		Mode	mode,
		ThreadContext *	tc,
		CachedState &	state,
		bool	r,
		bool	w,
		bool	x
	)

protected

◆ s2PermBits64()

std::pair< bool, bool > gem5::MMU::s2PermBits64	(	TlbEntry *	te,
		const RequestPtr &	req,
		Mode	mode,
		ThreadContext *	tc,
		CachedState &	state,
		bool	r,
		bool	w,
		bool	x
	)

protected

Definition at line 576 of file mmu.cc.

References gem5::ArmISA::MMU::CachedState::aarch64EL, gem5::QARMA::b10, DPRINTF, gem5::ArmISA::EL2, gem5::ArmISA::EL3, gem5::ArmSystem::haveEL(), gem5::ArmISA::MMU::CachedState::isSecure, panic, gem5::MipsISA::r, gem5::ArmISA::MMU::CachedState::scr, gem5::ArmISA::te, gem5::MipsISA::w, and gem5::RiscvISA::x.

Referenced by checkPermissions64().

◆ setAttr()

void gem5::ArmISA::MMU::setAttr ( uint64_t attr )

inline

Accessor functions for memory attributes for last accessed TLB entry.

Definition at line 340 of file mmu.hh.

References _attr, and gem5::ArmISA::attr.

Referenced by translateMmuOff(), and translateMmuOn().

◆ setTestInterface()

void gem5::MMU::setTestInterface ( SimObject * ti )

Definition at line 1583 of file mmu.cc.

References fatal_if, gem5::Named::name(), and gem5::MipsISA::ti.

◆ takeOverFrom()

void gem5::MMU::takeOverFrom ( BaseMMU * old_mmu )

overridevirtual

Reimplemented from gem5::BaseMMU.

Definition at line 1569 of file mmu.cc.

References _attr, s1State, s2State, and gem5::BaseMMU::takeOverFrom().

◆ testTranslation()

Fault gem5::MMU::testTranslation	(	const RequestPtr &	req,
		Mode	mode,
		TlbEntry::DomainType	domain,
		CachedState &	state
	)

Definition at line 1595 of file mmu.cc.

References gem5::ArmISA::domain, gem5::ArmISA::MMU::CachedState::isPriv, gem5::ArmISA::mode, and gem5::NoFault.

Referenced by translateMmuOff(), and translateMmuOn().

◆ testWalk() [1/2]

Fault gem5::MMU::testWalk	(	Addr	pa,
		Addr	size,
		Addr	va,
		bool	is_secure,
		Mode	mode,
		TlbEntry::DomainType	domain,
		LookupLevel	lookup_level,
		bool	stage2
	)

Definition at line 1607 of file mmu.cc.

References gem5::ArmISA::domain, gem5::ArmISA::mode, gem5::ArmISA::pa, s1State, s2State, and gem5::ArmISA::va.

Referenced by gem5::ArmISA::TableWalker::testWalk().

◆ testWalk() [2/2]

Fault gem5::MMU::testWalk	(	Addr	pa,
		Addr	size,
		Addr	va,
		bool	is_secure,
		Mode	mode,
		TlbEntry::DomainType	domain,
		LookupLevel	lookup_level,
		CachedState &	state
	)

Definition at line 1616 of file mmu.cc.

References gem5::ArmISA::domain, gem5::ArmISA::MMU::CachedState::isPriv, gem5::ArmISA::mode, gem5::NoFault, gem5::ArmISA::pa, and gem5::ArmISA::va.

◆ translateAtomic() [1/3]

Fault gem5::MMU::translateAtomic	(	const RequestPtr &	req,
		ThreadContext *	tc,
		BaseMMU::Mode	mode,
		ArmTranslationType	tran_type,
		bool	stage2
	)

Definition at line 1031 of file mmu.cc.

References gem5::FullSystem, gem5::ArmISA::mode, translateFs(), translateSe(), and updateMiscReg().

◆ translateAtomic() [2/3]

Fault gem5::ArmISA::MMU::translateAtomic	(	const RequestPtr &	req,
		ThreadContext *	tc,
		Mode	mode
	)

inlineoverridevirtual

Reimplemented from gem5::BaseMMU.

Definition at line 208 of file mmu.hh.

References gem5::ArmISA::mode, and NormalTran.

Referenced by gem5::ArmISA::TableWalker::readDataUntimed(), gem5::Trace::TarmacParserRecord::readMemNoEffect(), and translateAtomic().

◆ translateAtomic() [3/3]

Fault gem5::MMU::translateAtomic	(	const RequestPtr &	req,
		ThreadContext *	tc,
		Mode	mode,
		ArmTranslationType	tran_type
	)

Definition at line 1024 of file mmu.cc.

References gem5::ArmISA::mode, and translateAtomic().

◆ translateComplete() [1/2]

Fault gem5::MMU::translateComplete	(	const RequestPtr &	req,
		ThreadContext *	tc,
		Translation *	translation,
		Mode	mode,
		ArmTranslationType	tran_type,
		bool	call_from_s2
	)

Definition at line 1091 of file mmu.cc.

References gem5::ArmISA::mode, and s1State.

Referenced by gem5::ArmISA::Stage2LookUp::finish(), and translateTiming().

◆ translateComplete() [2/2]

Fault gem5::MMU::translateComplete	(	const RequestPtr &	req,
		ThreadContext *	tc,
		Translation *	translation,
		Mode	mode,
		ArmTranslationType	tran_type,
		bool	call_from_s2,
		CachedState &	state
	)

Definition at line 1100 of file mmu.cc.

References DPRINTF, gem5::BaseMMU::Translation::finish(), gem5::FullSystem, gem5::BaseMMU::Translation::markDelayed(), gem5::ArmISA::mode, gem5::NoFault, gem5::ArmISA::MMU::CachedState::stage2Req, translateFs(), and translateSe().

◆ translateFs()

Fault gem5::MMU::translateFs	(	const RequestPtr &	req,
		ThreadContext *	tc,
		Mode	mode,
		Translation *	translation,
		bool &	delay,
		bool	timing,
		ArmTranslationType	tran_type,
		bool	functional,
		CachedState &	state
	)

Definition at line 940 of file mmu.cc.

Referenced by translateAtomic(), translateComplete(), and translateFunctional().

◆ translateFunctional() [1/7]

virtual TranslationGenPtr gem5::BaseMMU::translateFunctional

Returns a translation generator for a region of virtual addresses, instead of directly translating a specific address.

◆ translateFunctional() [2/7]

TranslationGenPtr gem5::ArmISA::MMU::translateFunctional	(	Addr	start,
		Addr	size,
		ThreadContext *	tc,
		Mode	mode,
		Request::Flags	flags
	)

inlineoverridevirtual

Returns a translation generator for a region of virtual addresses, instead of directly translating a specific address.

Implements gem5::BaseMMU.

Definition at line 90 of file mmu.hh.

References gem5::ArmISA::mode, and gem5::ArmISA::PageBytes.

Referenced by gem5::ArmISA::ISA::addressTranslation(), gem5::ArmISA::ISA::addressTranslation64(), gem5::ArmISA::TableWalker::readDataUntimed(), gem5::Trace::TarmacTracerRecordV8::TraceMemEntryV8::TraceMemEntryV8(), and translateFunctional().

◆ translateFunctional() [3/7]

Fault gem5::MMU::translateFunctional	(	const RequestPtr &	req,
		ThreadContext *	tc,
		BaseMMU::Mode	mode
	)

overridevirtual

Reimplemented from gem5::BaseMMU.

Definition at line 1048 of file mmu.cc.

References gem5::ArmISA::mode, NormalTran, and translateFunctional().

◆ translateFunctional() [4/7]

Fault gem5::MMU::translateFunctional	(	const RequestPtr &	req,
		ThreadContext *	tc,
		BaseMMU::Mode	mode,
		ArmTranslationType	tran_type
	)

Do a functional lookup on the TLB (for checker cpu) that behaves like a normal lookup without modifying any page table state.

Definition at line 1054 of file mmu.cc.

References gem5::ArmISA::mode, and translateFunctional().

◆ translateFunctional() [5/7]

Fault gem5::MMU::translateFunctional	(	const RequestPtr &	req,
		ThreadContext *	tc,
		BaseMMU::Mode	mode,
		ArmTranslationType	tran_type,
		bool	stage2
	)

Definition at line 1061 of file mmu.cc.

References gem5::FullSystem, gem5::ArmISA::mode, translateFs(), translateSe(), and updateMiscReg().

◆ translateFunctional() [6/7]

Fault gem5::BaseMMU::translateFunctional

Definition at line 118 of file mmu.cc.

◆ translateFunctional() [7/7]

bool gem5::MMU::translateFunctional	(	ThreadContext *	tc,
		Addr	vaddr,
		Addr &	paddr
	)

Do a functional lookup on the TLB (for debugging) and don't modify any internal state.

Parameters

tc	thread context to get the context id from
vaddr	virtual address to translate
pa	returned physical address

Returns: if the translation was successful

Definition at line 169 of file mmu.cc.

◆ translateMmuOff()

Fault gem5::MMU::translateMmuOff	(	ThreadContext *	tc,
		const RequestPtr &	req,
		Mode	mode,
		ArmTranslationType	tran_type,
		Addr	vaddr,
		bool	long_desc_format,
		CachedState &	state
	)

Definition at line 793 of file mmu.cc.

Referenced by translateFs().

◆ translateMmuOn()

Fault gem5::MMU::translateMmuOn	(	ThreadContext *	tc,
		const RequestPtr &	req,
		Mode	mode,
		Translation *	translation,
		bool &	delay,
		bool	timing,
		bool	functional,
		Addr	vaddr,
		ArmFault::TranMethod	tranMethod,
		CachedState &	state
	)

◆ translateSe()

Fault gem5::MMU::translateSe	(	const RequestPtr &	req,
		ThreadContext *	tc,
		Mode	mode,
		Translation *	translation,
		bool &	delay,
		bool	timing,
		CachedState &	state
	)

◆ translateTiming() [1/3]

void gem5::ArmISA::MMU::translateTiming	(	const RequestPtr &	req,
		ThreadContext *	tc,
		BaseMMU::Translation *	translation,
		BaseMMU::Mode	mode,
		bool	stage2
	)

◆ translateTiming() [2/3]

void gem5::ArmISA::MMU::translateTiming	(	const RequestPtr &	req,
		ThreadContext *	tc,
		Translation *	translation,
		Mode	mode
	)

inlineoverridevirtual

Reimplemented from gem5::BaseMMU.

Definition at line 219 of file mmu.hh.

References gem5::ArmISA::mode, and NormalTran.

Referenced by gem5::ArmISA::TableWalker::doL1DescriptorWrapper(), gem5::ArmISA::TableWalker::doL2DescriptorWrapper(), gem5::ArmISA::TableWalker::doLongDescriptorWrapper(), and gem5::ArmISA::TableWalker::processWalkWrapper().

◆ translateTiming() [3/3]

void gem5::MMU::translateTiming	(	const RequestPtr &	req,
		ThreadContext *	tc,
		Translation *	translation,
		Mode	mode,
		ArmTranslationType	tran_type,
		bool	stage2
	)

Definition at line 1078 of file mmu.cc.

References gem5::ArmISA::mode, translateComplete(), and updateMiscReg().

◆ tranTypeEL()

ExceptionLevel gem5::MMU::tranTypeEL	(	CPSR	cpsr,
		ArmTranslationType	type
	)

static

Determine the EL to use for the purpose of a translation given a specific translation type.

If the translation type doesn't specify an EL, we use the current EL.

Definition at line 1368 of file mmu.cc.

References gem5::ArmISA::currEL(), gem5::ArmISA::EL0, gem5::ArmISA::EL1, gem5::ArmISA::EL2, gem5::ArmISA::EL3, HypMode, NormalTran, panic, S12E0Tran, S12E1Tran, S1CTran, S1E0Tran, S1E1Tran, S1E2Tran, S1E3Tran, S1S2NsTran, and gem5::X86ISA::type.

Referenced by gem5::ArmISA::MMU::CachedState::updateMiscReg(), and gem5::ArmISA::TableWalker::walk().

◆ updateMiscReg()

MMU::CachedState & gem5::MMU::updateMiscReg	(	ThreadContext *	tc,
		ArmTranslationType	tran_type,
		bool	stage2
	)

protected

Definition at line 1161 of file mmu.cc.

References gem5::ThreadContext::contextId(), gem5::BaseMMU::data, DPRINTF, dtbStage2, gem5::BaseMMU::instruction, itbStage2, miscRegContext, s1State, s2State, gem5::ArmISA::TLB::setVMID(), gem5::ArmISA::tlb, gem5::BaseMMU::unified, and gem5::ArmISA::MMU::CachedState::updateMiscReg().

Referenced by checkPermissions64(), getTE(), translateAtomic(), translateFunctional(), translateSe(), and translateTiming().

Member Data Documentation

◆ _attr

uint64_t gem5::ArmISA::MMU::_attr

protected

Definition at line 445 of file mmu.hh.

Referenced by getAttr(), setAttr(), and takeOverFrom().

◆ _hasWalkCache

bool gem5::ArmISA::MMU::_hasWalkCache

protected

Definition at line 454 of file mmu.hh.

Referenced by hasWalkCache(), and init().

◆ _release

const ArmRelease* gem5::ArmISA::MMU::_release

protected

Definition at line 448 of file mmu.hh.

Referenced by MMU(), and release().

◆ dtbStage2

TLB* gem5::ArmISA::MMU::dtbStage2

protected

Definition at line 81 of file mmu.hh.

Referenced by flushAll(), flushStage2(), getTlb(), init(), and updateMiscReg().

◆ dtbStage2Walker

TableWalker* gem5::ArmISA::MMU::dtbStage2Walker

protected

Definition at line 86 of file mmu.hh.

Referenced by getTableWalker(), and init().

◆ dtbWalker

TableWalker* gem5::ArmISA::MMU::dtbWalker

protected

Definition at line 84 of file mmu.hh.

Referenced by getTableWalker(), and init().

◆ haveLargeAsid64

bool gem5::ArmISA::MMU::haveLargeAsid64

protected

Definition at line 449 of file mmu.hh.

Referenced by MMU().

◆ itbStage2

TLB* gem5::ArmISA::MMU::itbStage2

protected

Definition at line 80 of file mmu.hh.

Referenced by flushAll(), flushStage2(), getTlb(), init(), and updateMiscReg().

◆ itbStage2Walker

TableWalker* gem5::ArmISA::MMU::itbStage2Walker

protected

Definition at line 85 of file mmu.hh.

Referenced by getTableWalker(), and init().

◆ itbWalker

TableWalker* gem5::ArmISA::MMU::itbWalker

protected

Definition at line 83 of file mmu.hh.

Referenced by getTableWalker(), and init().

◆ m5opRange

AddrRange gem5::ArmISA::MMU::m5opRange

protected

Definition at line 452 of file mmu.hh.

Referenced by finalizePhysical(), and MMU().

◆ miscRegContext

ContextID gem5::ArmISA::MMU::miscRegContext

protected

Definition at line 439 of file mmu.hh.

Referenced by updateMiscReg().

◆ physAddrRange

uint8_t gem5::ArmISA::MMU::physAddrRange

protected

Definition at line 450 of file mmu.hh.

Referenced by MMU(), and translateMmuOff().

◆ s1State

CachedState gem5::ArmISA::MMU::s1State

Definition at line 442 of file mmu.hh.

Referenced by checkPermissions(), checkPermissions64(), drainResume(), getTE(), invalidateMiscReg(), takeOverFrom(), testWalk(), translateComplete(), and updateMiscReg().

◆ s2State

CachedState gem5::ArmISA::MMU::s2State

Definition at line 442 of file mmu.hh.

Referenced by checkPermissions(), checkPermissions64(), drainResume(), getTE(), takeOverFrom(), testWalk(), and updateMiscReg().

◆ stats

gem5::ArmISA::MMU::Stats gem5::ArmISA::MMU::stats

protected

Referenced by checkPermissions(), checkPermissions64(), getTE(), translateFs(), and translateMmuOn().

◆ test

TlbTestInterface* gem5::ArmISA::MMU::test

Definition at line 416 of file mmu.hh.

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

arch/arm/mmu.hh
arch/arm/mmu.cc

Classes

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Types

Protected Member Functions

Protected Attributes

Detailed Description

Member Typedef Documentation

◆ LookupLevel

Member Enumeration Documentation

◆ ArmFlags

◆ ArmTranslationType

Constructor & Destructor Documentation

◆ MMU()

Member Function Documentation

◆ checkPAN()

◆ checkPermissions() [1/2]

◆ checkPermissions() [2/2]

◆ checkPermissions64() [1/2]

◆ checkPermissions64() [2/2]

◆ checkWalkCache()

◆ dflush()

◆ drainResume()

◆ faultPAN()

◆ finalizePhysical()

◆ flush()

◆ flushAll()

◆ flushStage1()

◆ flushStage2()

◆ getAttr()

◆ getDTBPtr()

◆ getITBPtr()

◆ getResultTe()

◆ getTableWalker()

◆ getTE() [1/2]

◆ getTE() [2/2]

◆ getTlb()

◆ hasWalkCache()

◆ iflush()

◆ init()

◆ invalidateMiscReg()

◆ isCompleteTranslation()

◆ lookup()

◆ release()

◆ s1PermBits64()

◆ s2PermBits64()

◆ setAttr()

◆ setTestInterface()

◆ takeOverFrom()

◆ testTranslation()

◆ testWalk() [1/2]

◆ testWalk() [2/2]

◆ translateAtomic() [1/3]

◆ translateAtomic() [2/3]

◆ translateAtomic() [3/3]

◆ translateComplete() [1/2]

◆ translateComplete() [2/2]

◆ translateFs()

◆ translateFunctional() [1/7]

◆ translateFunctional() [2/7]

◆ translateFunctional() [3/7]

◆ translateFunctional() [4/7]

◆ translateFunctional() [5/7]

◆ translateFunctional() [6/7]

◆ translateFunctional() [7/7]

◆ translateMmuOff()

◆ translateMmuOn()

◆ translateSe()

◆ translateTiming() [1/3]

◆ translateTiming() [2/3]

◆ translateTiming() [3/3]

◆ tranTypeEL()

◆ updateMiscReg()

Member Data Documentation

◆ _attr

◆ _hasWalkCache

◆ _release

◆ dtbStage2