#include <pagetable_walker.hh>

Inheritance diagram for gem5::RiscvISA::Walker:

Classes
class	WalkerPort

struct	WalkerSenderState

class	WalkerState

Public Types
using	Params = RiscvPagetableWalkerParams

Public Types inherited from gem5::ClockedObject
using	Params = ClockedObjectParams
	Parameters of ClockedObject.

Public Types inherited from gem5::SimObject
typedef SimObjectParams	Params

Public Member Functions
Fault	start (ThreadContext _tc, BaseMMU::Translation translation, const RequestPtr &req, BaseMMU::Mode mode)

Fault	startFunctional (ThreadContext *_tc, Addr &addr, unsigned &logBytes, BaseMMU::Mode mode)

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

void	setTLB (TLB *_tlb)

	Walker (const Params &params)

Public Member Functions inherited from gem5::ClockedObject
	ClockedObject (const ClockedObjectParams &p)

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

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

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

	SimObject (const Params &p)

virtual	~SimObject ()

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

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 ()

virtual void	serialize (CheckpointOut &cp) const =0
	Serialize an object.

virtual void	unserialize (CheckpointIn &cp)=0
	Unserialize an object.

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 (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 Member Functions inherited from gem5::Clocked
void	updateClockPeriod ()
	Update the tick to the current tick.

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.

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

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.

uint64_t	frequency () const

Tick	clockPeriod () const

double	voltage () const

Cycles	ticksToCycles (Tick t) const

Tick	cyclesToTicks (Cycles c) const

Protected Member Functions
void	startWalkWrapper ()

bool	recvTimingResp (PacketPtr pkt)

void	recvReqRetry ()

bool	sendTiming (WalkerState *sendingState, PacketPtr pkt)

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

virtual	~Drainable ()

virtual DrainState	drain ()=0
	Draining is the process of clearing out the states of SimObjects.These are the SimObjects that are partially executed or are partially in flight.

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

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

Protected Member Functions inherited from gem5::Clocked
	Clocked (ClockDomain &clk_domain)
	Create a clocked object and set the clock domain based on the parameters.

	Clocked (Clocked &)=delete

Clocked &	operator= (Clocked &)=delete

virtual	~Clocked ()
	Virtual destructor due to inheritance.

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

virtual void	clockPeriodUpdated ()
	A hook subclasses can implement so they can do any extra work that's needed when the clock rate is changed.

Protected Attributes
WalkerPort	port

std::list< WalkerState * >	currStates

WalkerState	funcState

TLB *	tlb

System *	sys

PMAChecker *	pma

PMP *	pmp

RequestorID	requestorId

unsigned	numSquashable

EventFunctionWrapper	startWalkWrapperEvent
	Event used to call startWalkWrapper.

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.

Friends
class	WalkerPort

class	WalkerState

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.

Public Attributes inherited from gem5::ClockedObject
PowerState *	powerState

Detailed Description

Definition at line 63 of file pagetable_walker.hh.

Member Typedef Documentation

◆ Params

using gem5::RiscvISA::Walker::Params = RiscvPagetableWalkerParams

Definition at line 203 of file pagetable_walker.hh.

Constructor & Destructor Documentation

◆ Walker()

gem5::RiscvISA::Walker::Walker ( const Params & params )

inline

Definition at line 205 of file pagetable_walker.hh.

References startWalkWrapper().

Member Function Documentation

◆ getPort()

Port & gem5::RiscvISA::Walker::getPort	(	const std::string &	if_name,
		PortID	idx = `InvalidPortID`
	)

overridevirtual

Get a port with a given name and index.

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

gem5 has a request and response port interface. All memory objects are connected together via ports. These ports provide a rigid interface between these memory objects. These ports implement three different memory system modes: timing, atomic, and functional. The most important mode is the timing mode and here timing mode is used for conducting cycle-level timing experiments. The other modes are only used in special circumstances and should not be used to conduct cycle-level timing experiments. The other modes are only used in special circumstances. These ports allow SimObjects to communicate with each other.

Parameters

if_name	Port name
idx	Index in the case of a VectorPort

Returns: A reference to the given port

Reimplemented from gem5::SimObject.

Definition at line 174 of file pagetable_walker.cc.

References gem5::SimObject::getPort(), and port.

◆ recvReqRetry()

void gem5::RiscvISA::Walker::recvReqRetry ( )

protected

Definition at line 146 of file pagetable_walker.cc.

References currStates, gem5::RiscvISA::Walker::WalkerState::isRetrying(), and gem5::RiscvISA::Walker::WalkerState::retry().

◆ recvTimingResp()

bool gem5::RiscvISA::Walker::recvTimingResp ( PacketPtr pkt )

protected

Definition at line 112 of file pagetable_walker.cc.

References gem5::Clocked::clockEdge(), currStates, gem5::Packet::popSenderState(), gem5::RiscvISA::Walker::WalkerState::recvPacket(), gem5::EventManager::schedule(), gem5::Event::scheduled(), gem5::RiscvISA::Walker::WalkerSenderState::senderWalk, and startWalkWrapperEvent.

Referenced by gem5::RiscvISA::Walker::WalkerPort::recvTimingResp().

◆ sendTiming()

bool gem5::RiscvISA::Walker::sendTiming	(	WalkerState *	sendingState,
		PacketPtr	pkt
	)

protected

Definition at line 157 of file pagetable_walker.cc.

References gem5::Packet::popSenderState(), port, gem5::Packet::pushSenderState(), and gem5::RequestPort::sendTimingReq().

◆ setTLB()

void gem5::RiscvISA::Walker::setTLB ( TLB * _tlb )

inline

Definition at line 198 of file pagetable_walker.hh.

References tlb.

◆ start()

Fault gem5::RiscvISA::Walker::start	(	ThreadContext *	_tc,
		BaseMMU::Translation *	translation,
		const RequestPtr &	req,
		BaseMMU::Mode	mode
	)

Definition at line 73 of file pagetable_walker.cc.

References currStates, DPRINTF, gem5::RiscvISA::Walker::WalkerState::initState(), gem5::RiscvISA::Walker::WalkerState::isTiming(), gem5::System::isTimingMode(), gem5::NoFault, gem5::RiscvISA::Walker::WalkerState::startWalk(), and sys.

◆ startFunctional()

Fault gem5::RiscvISA::Walker::startFunctional	(	ThreadContext *	_tc,
		Addr &	addr,
		unsigned &	logBytes,
		BaseMMU::Mode	mode
	)

Definition at line 98 of file pagetable_walker.cc.

References gem5::X86ISA::addr, funcState, gem5::RiscvISA::Walker::WalkerState::initState(), and gem5::RiscvISA::Walker::WalkerState::startFunctional().

◆ startWalkWrapper()

void gem5::RiscvISA::Walker::startWalkWrapper ( )

protected

Definition at line 199 of file pagetable_walker.cc.

Referenced by Walker().

Friends And Related Symbol Documentation

◆ WalkerPort

friend class WalkerPort

friend

Definition at line 81 of file pagetable_walker.hh.

◆ WalkerState

friend class WalkerState

friend

Definition at line 149 of file pagetable_walker.hh.

Member Data Documentation

◆ currStates

std::list<WalkerState *> gem5::RiscvISA::Walker::currStates

protected

Definition at line 152 of file pagetable_walker.hh.

Referenced by recvReqRetry(), recvTimingResp(), start(), and startWalkWrapper().

◆ funcState

WalkerState gem5::RiscvISA::Walker::funcState

protected

Definition at line 154 of file pagetable_walker.hh.

Referenced by startFunctional().

◆ numSquashable

unsigned gem5::RiscvISA::Walker::numSquashable

protected

Definition at line 181 of file pagetable_walker.hh.

Referenced by startWalkWrapper().

◆ pma

PMAChecker* gem5::RiscvISA::Walker::pma

protected

Definition at line 176 of file pagetable_walker.hh.

◆ pmp

PMP* gem5::RiscvISA::Walker::pmp

protected

Definition at line 177 of file pagetable_walker.hh.

◆ port

WalkerPort gem5::RiscvISA::Walker::port

protected

Definition at line 82 of file pagetable_walker.hh.

Referenced by getPort(), and sendTiming().

◆ requestorId

RequestorID gem5::RiscvISA::Walker::requestorId

protected

Definition at line 178 of file pagetable_walker.hh.

◆ startWalkWrapperEvent

EventFunctionWrapper gem5::RiscvISA::Walker::startWalkWrapperEvent

protected

Event used to call startWalkWrapper.

Definition at line 189 of file pagetable_walker.hh.

Referenced by recvTimingResp().

◆ sys

System* gem5::RiscvISA::Walker::sys

protected

Definition at line 175 of file pagetable_walker.hh.

Referenced by start().

◆ tlb

TLB* gem5::RiscvISA::Walker::tlb

protected

Definition at line 174 of file pagetable_walker.hh.

Referenced by setTLB().

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

arch/riscv/pagetable_walker.hh
arch/riscv/pagetable_walker.cc

Classes

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Params

Constructor & Destructor Documentation

◆ Walker()

Member Function Documentation

◆ getPort()

◆ recvReqRetry()

◆ recvTimingResp()

◆ sendTiming()

◆ setTLB()

◆ start()

◆ startFunctional()

◆ startWalkWrapper()

Friends And Related Symbol Documentation

◆ WalkerPort

◆ WalkerState

Member Data Documentation

◆ currStates

◆ funcState

◆ numSquashable

◆ pma

◆ pmp

◆ port

◆ requestorId

◆ startWalkWrapperEvent

◆ sys

◆ tlb