#include <smmu_v3_deviceifc.hh>

Inheritance diagram for SMMUv3DeviceInterface:

Public Member Functions
Tick	recvAtomic (PacketPtr pkt)

bool	recvTimingReq (PacketPtr pkt)

void	schedTimingResp (PacketPtr pkt)

Tick	atsRecvAtomic (PacketPtr pkt)

bool	atsRecvTimingReq (PacketPtr pkt)

bool	atsRecvTimingResp (PacketPtr pkt)

void	schedAtsTimingResp (PacketPtr pkt)

void	scheduleDeviceRetry ()

void	sendDeviceRetry ()

void	atsSendDeviceRetry ()

Port &	getPort (const std::string &name, PortID id) override
	Get a port with a given name and index. More...

	PARAMS (SMMUv3DeviceInterface)

	SMMUv3DeviceInterface (const Params &p)

	~SMMUv3DeviceInterface ()

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

void	setSMMU (SMMUv3 *_smmu)

void	sendRange ()

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

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

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

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

	SimObject (const Params &p)

virtual	~SimObject ()

virtual const std::string	name () const

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

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 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
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 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 Stats::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 (Stats::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 Clocked
void	updateClockPeriod ()
	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

Public Attributes
SMMUv3 *	smmu

SMMUTLB *	microTLB

SMMUTLB *	mainTLB

const bool	microTLBEnable

const bool	mainTLBEnable

SMMUSemaphore	devicePortSem

SMMUSemaphore	microTLBSem

SMMUSemaphore	mainTLBSem

const Cycles	microTLBLat

const Cycles	mainTLBLat

SMMUDevicePort *	devicePort

SMMUATSDevicePort	atsDevicePort

SMMUATSMemoryPort	atsMemPort

const unsigned	portWidth

unsigned	wrBufSlotsRemaining

unsigned	xlateSlotsRemaining

unsigned	pendingMemAccesses

const bool	prefetchEnable

const bool	prefetchReserveLastWay

std::list< SMMUTranslationProcess * >	duplicateReqs

SMMUSignal	duplicateReqRemoved

std::list< SMMUTranslationProcess * >	dependentReads [SMMU_MAX_TRANS_ID]

std::list< SMMUTranslationProcess * >	dependentWrites [SMMU_MAX_TRANS_ID]

SMMUSignal	dependentReqRemoved

bool	deviceNeedsRetry

bool	atsDeviceNeedsRetry

SMMUDeviceRetryEvent	sendDeviceRetryEvent

EventWrapper< SMMUv3DeviceInterface, &SMMUv3DeviceInterface::atsSendDeviceRetry >	atsSendDeviceRetryEvent

Public Attributes inherited from ClockedObject
PowerState *	powerState

Friends
class	SMMUTranslationProcess

Additional Inherited Members
Public Types inherited from ClockedObject
using	Params = ClockedObjectParams
	Parameters of ClockedObject. More...

Public Types inherited from SimObject
typedef SimObjectParams	Params

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 ()
	Gets the fully-qualified name of the active section. More...

static void	serializeAll (const std::string &cpt_dir)
	Serializes all the SimObjects. More...

static void	unserializeGlobals (CheckpointIn &cp)

Protected Member Functions inherited from Drainable
	Drainable ()

virtual	~Drainable ()

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

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...

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

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...

Detailed Description

Definition at line 55 of file smmu_v3_deviceifc.hh.

Constructor & Destructor Documentation

◆ SMMUv3DeviceInterface()

SMMUv3DeviceInterface::SMMUv3DeviceInterface ( const Params & p )

Definition at line 45 of file smmu_v3_deviceifc.cc.

◆ ~SMMUv3DeviceInterface()

SMMUv3DeviceInterface::~SMMUv3DeviceInterface ( )

inline

Definition at line 124 of file smmu_v3_deviceifc.hh.

References mainTLB, and microTLB.

Member Function Documentation

◆ atsRecvAtomic()

Tick SMMUv3DeviceInterface::atsRecvAtomic ( PacketPtr pkt )

Definition at line 173 of file smmu_v3_deviceifc.cc.

References ArmISA::a, ACTION_SEND_RESP_ATS, SMMUTranslationProcess::beginTransaction(), csprintf(), DPRINTF, SMMUTranslRequest::fromPacket(), Packet::getAddr(), Packet::getSize(), SimObject::name(), SMMUv3::runProcessAtomic(), and smmu.

Referenced by SMMUATSDevicePort::recvAtomic().

◆ atsRecvTimingReq()

bool SMMUv3DeviceInterface::atsRecvTimingReq ( PacketPtr pkt )

Definition at line 191 of file smmu_v3_deviceifc.cc.

References SMMUTranslationProcess::beginTransaction(), csprintf(), deviceNeedsRetry, DPRINTF, SMMUTranslRequest::fromPacket(), Packet::getAddr(), Packet::getSize(), Packet::headerDelay, SimObject::name(), Packet::payloadDelay, SMMUv3::runProcessTiming(), smmu, SMMUTranslationProcess, and xlateSlotsRemaining.

Referenced by SMMUATSDevicePort::recvTimingReq().

◆ atsRecvTimingResp()

bool SMMUv3DeviceInterface::atsRecvTimingResp ( PacketPtr pkt )

Definition at line 216 of file smmu_v3_deviceifc.cc.

References DPRINTF, Packet::getAddr(), Packet::getSize(), Packet::headerDelay, Packet::payloadDelay, Packet::popSenderState(), SMMUv3::runProcessTiming(), and smmu.

Referenced by SMMUATSMemoryPort::recvTimingResp().

◆ atsSendDeviceRetry()

void SMMUv3DeviceInterface::atsSendDeviceRetry ( )

Definition at line 239 of file smmu_v3_deviceifc.cc.

References atsDevicePort, DPRINTF, and ResponsePort::sendRetryReq().

◆ drain()

DrainState SMMUv3DeviceInterface::drain ( )

overridevirtual

Draining is the process of clearing out the states of SimObjects.These are the SimObjects that are partially executed or are partially in flight.

Draining is mostly used before forking and creating a check point.

This function notifies 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 256 of file smmu_v3_deviceifc.cc.

References Drained, Draining, SimObject::params(), and xlateSlotsRemaining.

◆ getPort()

Port & SMMUv3DeviceInterface::getPort	(	const std::string &	if_name,
		PortID	idx
	)

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