gem5::PL031 Class Reference

#include <rtc_pl031.hh>

Inheritance diagram for gem5::PL031:

Public Types
using	Params = PL031Params
Public Types inherited from gem5::AmbaIntDevice
typedef AmbaIntDeviceParams	Params
Public Types inherited from gem5::AmbaPioDevice
typedef AmbaPioDeviceParams	Params
Public Types inherited from gem5::PioDevice
using	Params = PioDeviceParams
Public Types inherited from gem5::ClockedObject
using	Params = ClockedObjectParams
	Parameters of ClockedObject.
Public Types inherited from gem5::SimObject
typedef SimObjectParams	Params

Public Member Functions
	PL031 (const Params &p)
	The constructor for RealView just registers itself with the MMU.
Tick	read (PacketPtr pkt) override
	Handle a read to the device.
Tick	write (PacketPtr pkt) override
	Handle writes to the device.
void	serialize (CheckpointOut &cp) const override
	Serialize an object.
void	unserialize (CheckpointIn &cp) override
	Unserialize an object.
Public Member Functions inherited from gem5::AmbaIntDevice
	AmbaIntDevice (const Params &p, Addr pio_size)
Public Member Functions inherited from gem5::AmbaPioDevice
	AmbaPioDevice (const Params &p, Addr pio_size)
Public Member Functions inherited from gem5::BasicPioDevice
	PARAMS (BasicPioDevice)
	BasicPioDevice (const Params &p, Addr size)
AddrRangeList	getAddrRanges () const override
	Determine the address ranges that this device responds to.
Public Member Functions inherited from gem5::PioDevice
	PioDevice (const Params &p)
virtual	~PioDevice ()
void	init () override
	init() is called after all C++ SimObjects have been created and all ports are connected.
Port &	getPort (const std::string &if_name, PortID idx=InvalidPortID) override
	Get a port with a given name and index.
Public Member Functions inherited from gem5::ClockedObject
	ClockedObject (const ClockedObjectParams &p)
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 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 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 Types
enum	{   DataReg = 0x00 , MatchReg = 0x04 , LoadReg = 0x08 , ControlReg = 0x0C ,   IntMask = 0x10 , RawISR = 0x14 , MaskedISR = 0x18 , IntClear = 0x1C }

Protected Member Functions
void	counterMatch ()
	Called when the counter reaches matches.
void	resyncMatch ()
	Called to update the matchEvent when the load Value or match value are written.
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 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 Member Functions inherited from gem5::AmbaDevice
bool	readId (PacketPtr pkt, uint64_t amba_id, Addr pio_addr)

Protected Attributes
uint32_t	timeVal
Tick	lastWrittenTick
uint32_t	loadVal
uint32_t	matchVal
bool	rawInt
	If timer has caused an interrupt.
bool	maskInt
	If the timer interrupt mask that is anded with the raw interrupt to generate a pending interrupt.
bool	pendingInt
	If an interrupt is currently pending.
EventFunctionWrapper	matchEvent
Protected Attributes inherited from gem5::AmbaIntDevice
ArmInterruptPin *const	interrupt
Tick	intDelay
Protected Attributes inherited from gem5::AmbaPioDevice
uint64_t	ambaId
Protected Attributes inherited from gem5::BasicPioDevice
Addr	pioAddr
	Address that the device listens to.
Addr	pioSize
	Size that the device's address range.
Tick	pioDelay
	Delay that the device experinces on an access.
Protected Attributes inherited from gem5::PioDevice
System *	sys
PioPort< PioDevice >	pioPort
	The pioPort that handles the requests for us and provides us requests that it sees.
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.

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
Static Protected Attributes inherited from gem5::AmbaDevice
static const int	AMBA_PER_ID0 = 0xFE0
static const int	AMBA_PER_ID1 = 0xFE4
static const int	AMBA_PER_ID2 = 0xFE8
static const int	AMBA_PER_ID3 = 0xFEC
static const int	AMBA_CEL_ID0 = 0xFF0
static const int	AMBA_CEL_ID1 = 0xFF4
static const int	AMBA_CEL_ID2 = 0xFF8
static const int	AMBA_CEL_ID3 = 0xFFC

Detailed Description

Definition at line 51 of file rtc_pl031.hh.

Member Typedef Documentation

Params

using gem5::PL031::Params = PL031Params

Definition at line 104 of file rtc_pl031.hh.

Member Enumeration Documentation

anonymous enum

anonymous enum

protected

Enumerator
DataReg
MatchReg
LoadReg
ControlReg
IntMask
RawISR
MaskedISR
IntClear

Definition at line 54 of file rtc_pl031.hh.

Constructor & Destructor Documentation

PL031()

gem5::PL031::PL031

(

const Params &

p

)

The constructor for RealView just registers itself with the MMU.

Parameters

p	params structure

Definition at line 52 of file rtc_pl031.cc.

References counterMatch().

Member Function Documentation

counterMatch()

void gem5::PL031::counterMatch ( )

protected

Called when the counter reaches matches.

Definition at line 172 of file rtc_pl031.cc.

References DPRINTF, gem5::AmbaIntDevice::interrupt, maskInt, pendingInt, gem5::ArmInterruptPin::raise(), and rawInt.

Referenced by PL031().

read()

Tick gem5::PL031::read ( PacketPtr pkt )

overridevirtual

Handle a read to the device.

Parameters

pkt	The memory request.
data	Where to put the data.

Implements gem5::PioDevice.

Definition at line 64 of file rtc_pl031.cc.

References gem5::AmbaPioDevice::ambaId, ControlReg, gem5::curTick(), data, DataReg, DPRINTF, gem5::Packet::getAddr(), gem5::Packet::getSize(), gem5::Packet::getUintX(), IntMask, lastWrittenTick, LoadReg, loadVal, gem5::Packet::makeAtomicResponse(), MaskedISR, maskInt, MatchReg, matchVal, panic, pendingInt, gem5::BasicPioDevice::pioAddr, gem5::BasicPioDevice::pioDelay, gem5::BasicPioDevice::pioSize, rawInt, RawISR, gem5::AmbaDevice::readId(), gem5::sim_clock::as_int::s, gem5::Packet::setUintX(), and timeVal.

resyncMatch()

void gem5::PL031::resyncMatch ( )

protected

Called to update the matchEvent when the load Value or match value are written.

Definition at line 155 of file rtc_pl031.cc.

References gem5::curTick(), gem5::EventManager::deschedule(), DPRINTF, matchEvent, matchVal, gem5::sim_clock::as_int::s, gem5::EventManager::schedule(), gem5::Event::scheduled(), and timeVal.

Referenced by write().

serialize()

void gem5::PL031::serialize ( CheckpointOut & cp ) const

overridevirtual

Serialize an object.

Output an object's state into the current checkpoint section.

Parameters

cp	Checkpoint state

Reimplemented from gem5::ClockedObject.

Definition at line 186 of file rtc_pl031.cc.

References DPRINTF, lastWrittenTick, loadVal, maskInt, matchEvent, matchVal, pendingInt, rawInt, gem5::Event::scheduled(), SERIALIZE_SCALAR, timeVal, and gem5::Event::when().

unserialize()

void gem5::PL031::unserialize ( CheckpointIn & cp )

overridevirtual

Unserialize an object.

Read an object's state from the current checkpoint section.

Parameters

cp	Checkpoint state

Reimplemented from gem5::ClockedObject.

Definition at line 208 of file rtc_pl031.cc.

References DPRINTF, lastWrittenTick, loadVal, maskInt, matchEvent, matchVal, pendingInt, rawInt, gem5::EventManager::schedule(), timeVal, and UNSERIALIZE_SCALAR.

write()

Tick gem5::PL031::write ( PacketPtr pkt )

overridevirtual

Handle writes to the device.

Parameters

pkt	The memory request.
data	the data

Implements gem5::PioDevice.

Definition at line 112 of file rtc_pl031.cc.

References gem5::AmbaPioDevice::ambaId, ControlReg, gem5::curTick(), DataReg, DPRINTF, gem5::Packet::getAddr(), gem5::Packet::getLE(), gem5::Packet::getSize(), IntClear, IntMask, lastWrittenTick, LoadReg, loadVal, gem5::Packet::makeAtomicResponse(), maskInt, MatchReg, matchVal, panic, pendingInt, gem5::BasicPioDevice::pioAddr, gem5::BasicPioDevice::pioDelay, gem5::BasicPioDevice::pioSize, rawInt, gem5::AmbaDevice::readId(), resyncMatch(), and timeVal.

Member Data Documentation

lastWrittenTick

Tick gem5::PL031::lastWrittenTick

protected

Definition at line 71 of file rtc_pl031.hh.

Referenced by read(), serialize(), unserialize(), and write().

loadVal

uint32_t gem5::PL031::loadVal

protected

Definition at line 74 of file rtc_pl031.hh.

Referenced by read(), serialize(), unserialize(), and write().

maskInt

bool gem5::PL031::maskInt

protected

If the timer interrupt mask that is anded with the raw interrupt to generate a pending interrupt.

Definition at line 88 of file rtc_pl031.hh.

Referenced by counterMatch(), read(), serialize(), unserialize(), and write().

matchEvent

EventFunctionWrapper gem5::PL031::matchEvent

protected

Definition at line 96 of file rtc_pl031.hh.

Referenced by resyncMatch(), serialize(), and unserialize().

matchVal

uint32_t gem5::PL031::matchVal

protected

Definition at line 79 of file rtc_pl031.hh.

Referenced by read(), resyncMatch(), serialize(), unserialize(), and write().

pendingInt

bool gem5::PL031::pendingInt

protected

If an interrupt is currently pending.

Logical and of CTRL.intEnable and rawInt

Definition at line 92 of file rtc_pl031.hh.

Referenced by counterMatch(), read(), serialize(), unserialize(), and write().

rawInt

bool gem5::PL031::rawInt

protected

If timer has caused an interrupt.

This is irrespective of interrupt enable

Definition at line 83 of file rtc_pl031.hh.

Referenced by counterMatch(), read(), serialize(), unserialize(), and write().

timeVal

uint32_t gem5::PL031::timeVal

protected

Definition at line 68 of file rtc_pl031.hh.

Referenced by read(), resyncMatch(), serialize(), unserialize(), and write().

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

• dev/arm/rtc_pl031.hh
• dev/arm/rtc_pl031.cc