#include <mmu.hh>

Inheritance diagram for gem5::RiscvISA::MMU:

Public Types
enum	RiscvFlags { ByteAlign = 0 , HalfWordAlign = 1 , WordAlign = 2 , DoubleWordAlign = 3 , QuadWordAlign = 4 , AlignmentMask = 0x7 }

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

Public Types inherited from gem5::SimObject
typedef SimObjectParams	Params

Public Member Functions
	MMU (const RiscvMMUParams &p)

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.

PrivilegeMode	getMemPriv (ThreadContext *tc, BaseMMU::Mode mode)

Walker *	getDataWalker ()

void	takeOverFrom (BaseMMU *old_mmu) override

PMP *	getPMP ()

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.

virtual void	flushAll ()

void	demapPage (Addr vaddr, uint64_t asn)

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

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

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

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

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.

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

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

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

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

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

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

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

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

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

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

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

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.

void	setCurTick (Tick newVal)

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

	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.

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

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

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.

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

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

virtual	~Group ()

virtual void	regStats ()
	Callback to set stat parameters.

virtual void	resetStats ()
	Callback to reset stats.

virtual void	preDumpStats ()
	Callback before stats are dumped.

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

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

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

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

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

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

	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

Public Attributes
BasePMAChecker *	pma

Public Attributes inherited from gem5::BaseMMU
BaseTLB *	dtb

BaseTLB *	itb

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.

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

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

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

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

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

Protected Types inherited from gem5::BaseMMU
typedef BaseMMUParams	Params

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 ()

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

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

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.

std::set< BaseTLB * >	data

std::set< BaseTLB * >	unified

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

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

Detailed Description

Definition at line 54 of file mmu.hh.

Member Enumeration Documentation

◆ RiscvFlags

enum gem5::RiscvISA::MMU::RiscvFlags

Enumerator
ByteAlign
HalfWordAlign
WordAlign
DoubleWordAlign
QuadWordAlign
AlignmentMask

Definition at line 104 of file mmu.hh.

Constructor & Destructor Documentation

◆ MMU()

gem5::RiscvISA::MMU::MMU ( const RiscvMMUParams & p )

inline

Definition at line 59 of file mmu.hh.

Member Function Documentation

◆ getDataWalker()

Walker * gem5::RiscvISA::MMU::getDataWalker ( )

inline

Definition at line 78 of file mmu.hh.

References gem5::BaseMMU::dtb.

◆ getMemPriv()

PrivilegeMode gem5::RiscvISA::MMU::getMemPriv	(	ThreadContext *	tc,
		BaseMMU::Mode	mode )

inline

Definition at line 72 of file mmu.hh.

References gem5::BaseMMU::dtb, getMemPriv(), and gem5::RiscvISA::mode.

Referenced by getMemPriv().

◆ getPMP()

PMP * gem5::RiscvISA::MMU::getPMP ( )

inline

Definition at line 93 of file mmu.hh.

References gem5::BaseMMU::dtb.

◆ takeOverFrom()

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

inlineoverridevirtual

Reimplemented from gem5::BaseMMU.

Definition at line 84 of file mmu.hh.

References pma, gem5::BaseMMU::takeOverFrom(), and gem5::RiscvISA::BasePMAChecker::takeOverFrom().

◆ translateFunctional()

TranslationGenPtr gem5::RiscvISA::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 64 of file mmu.hh.

References flags, gem5::RiscvISA::mode, and gem5::RiscvISA::PageBytes.

Member Data Documentation

◆ pma

BasePMAChecker* gem5::RiscvISA::MMU::pma

Definition at line 57 of file mmu.hh.

Referenced by takeOverFrom().

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

arch/riscv/mmu.hh

Public Types

Public Member Functions

Public Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ RiscvFlags

Constructor & Destructor Documentation

◆ MMU()

Member Function Documentation

◆ getDataWalker()

◆ getMemPriv()

◆ getPMP()

◆ takeOverFrom()

◆ translateFunctional()

Member Data Documentation

◆ pma