ArchTimer Class Reference

Per-CPU architected timer. More...

#include <generic_timer.hh>

Inheritance diagram for ArchTimer:

Classes
class	Interrupt

Public Member Functions
	ArchTimer (const std::string &name, SimObject &parent, SystemCounter &sysctr, const Interrupt &interrupt)
std::string	name () const
	Returns the timer name. More...
uint64_t	compareValue () const
	Returns the CompareValue view of the timer. More...
void	setCompareValue (uint64_t val)
	Sets the CompareValue view of the timer. More...
uint32_t	timerValue () const
	Returns the TimerValue view of the timer. More...
void	setTimerValue (uint32_t val)
	Sets the TimerValue view of the timer. More...
uint32_t	control () const
	Sets the control register. More...
void	setControl (uint32_t val)
uint64_t	offset () const
void	setOffset (uint64_t val)
uint64_t	value () const
	Returns the value of the counter which this timer relies on. 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 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)

Protected Member Functions
	BitUnion32 (ArchTimerCtrl) Bitfield< 0 > enable
	Control register. More...
void	updateCounter ()
	Timer settings or the offset has changed, re-evaluate trigger condition and raise interrupt if necessary. More...
void	counterLimitReached ()
	Called when the upcounter reaches the programmed value. More...

Protected Attributes
Bitfield< 1 >	imask
Bitfield< 2 >	istatus
EndBitUnion(ArchTimerCtrl) const std SimObject &	_parent
	Name of this timer. More...
SystemCounter &	_systemCounter
Interrupt	_interrupt
ArchTimerCtrl	_control
	Value of the control register ({CNTP/CNTHP/CNTV}_CTL). More...
uint64_t	_counterLimit
	Programmed limit value for the upcounter ({CNTP/CNTHP/CNTV}_CVAL). More...
uint64_t	_offset
	Offset relative to the physical timer (CNTVOFF) More...
EventWrapper< ArchTimer,&ArchTimer::counterLimitReached >	_counterLimitReachedEvent

Private Member Functions
	ArchTimer (const ArchTimer &t)

Additional Inherited Members
Static Public Member Functions inherited from Serializable
static const std::string &	currentSection ()
	Get the fully-qualified name of the active section. More...
static void	serializeAll (const std::string &cpt_dir)
static void	unserializeGlobals (CheckpointIn &cp)
Static Public Attributes inherited from Serializable
static int	ckptCount = 0
static int	ckptMaxCount = 0
static int	ckptPrevCount = -1

Detailed Description

Per-CPU architected timer.

Definition at line 105 of file generic_timer.hh.

Constructor & Destructor Documentation

ArchTimer::ArchTimer	(	const std::string &	name,
		SimObject &	parent,
		SystemCounter &	sysctr,
		const Interrupt &	interrupt
	)

Definition at line 91 of file generic_timer.cc.

ArchTimer::ArchTimer ( const ArchTimer &  t )

private

Member Function Documentation

ArchTimer::BitUnion32 ( ArchTimerCtrl  )

protected

Control register.

uint64_t ArchTimer::compareValue ( ) const

inline

Returns the CompareValue view of the timer.

Definition at line 173 of file generic_timer.hh.

References _counterLimit.

Referenced by GenericTimer::readMiscReg(), GenericTimerMem::timerRead(), and GenericTimerMem::timerWrite().

uint32_t ArchTimer::control ( ) const

inline

Sets the control register.

Definition at line 183 of file generic_timer.hh.

References _control.

Referenced by GenericTimer::readMiscReg(), and GenericTimerMem::timerRead().

void ArchTimer::counterLimitReached ( )

protected

Called when the upcounter reaches the programmed value.

Definition at line 103 of file generic_timer.cc.

References _control, _interrupt, DPRINTF, and ArchTimer::Interrupt::send().

Referenced by updateCounter().

std::string ArchTimer::name ( ) const

inline

Returns the timer name.

Definition at line 170 of file generic_timer.hh.

uint64_t ArchTimer::offset ( ) const

inline

Definition at line 186 of file generic_timer.hh.

References _offset.

Referenced by GenericTimerMem::ctrlRead(), GenericTimerMem::ctrlWrite(), GenericTimer::readMiscReg(), and GenericTimerMem::timerRead().

void ArchTimer::serialize ( CheckpointOut &  cp ) const

overridevirtual

Serialize an object.

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

Parameters

cp	Checkpoint state

Implements Serializable.

Definition at line 177 of file generic_timer.cc.

References _control, _counterLimit, _counterLimitReachedEvent, _offset, paramOut(), Event::scheduled(), SERIALIZE_SCALAR, and Event::when().

void ArchTimer::setCompareValue

(

uint64_t

val

)

Sets the CompareValue view of the timer.

Definition at line 133 of file generic_timer.cc.

References _counterLimit, updateCounter(), and X86ISA::val.

Referenced by GenericTimer::setMiscReg(), setTimerValue(), and GenericTimerMem::timerWrite().

void ArchTimer::setControl

(

uint32_t

val

)

Definition at line 146 of file generic_timer.cc.

References _control, _counterLimit, DPRINTF, X86ISA::val, and value().

Referenced by GenericTimer::setMiscReg(), and GenericTimerMem::timerWrite().

void ArchTimer::setOffset

(

uint64_t

val

)

Definition at line 164 of file generic_timer.cc.

References _offset, updateCounter(), and X86ISA::val.

Referenced by GenericTimerMem::ctrlWrite(), and GenericTimer::setMiscReg().

void ArchTimer::setTimerValue

(

uint32_t

val

)

Sets the TimerValue view of the timer.

Definition at line 140 of file generic_timer.cc.

References setCompareValue(), and value().

Referenced by GenericTimer::setMiscReg(), and GenericTimerMem::timerWrite().

uint32_t ArchTimer::timerValue ( ) const

inline

Returns the TimerValue view of the timer.

Definition at line 178 of file generic_timer.hh.

References _counterLimit, and value().

Referenced by GenericTimer::readMiscReg(), and GenericTimerMem::timerRead().

void ArchTimer::unserialize ( CheckpointIn &  cp )

overridevirtual

Unserialize an object.

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

Parameters

cp	Checkpoint state

Implements Serializable.

Definition at line 192 of file generic_timer.cc.

References _control, _counterLimitReachedEvent, _offset, _parent, paramIn(), EventManager::schedule(), UNSERIALIZE_OPT_SCALAR, and UNSERIALIZE_SCALAR.

void ArchTimer::updateCounter ( )

protected

Timer settings or the offset has changed, re-evaluate trigger condition and raise interrupt if necessary.

Definition at line 118 of file generic_timer.cc.

References _control, _counterLimit, _counterLimitReachedEvent, _parent, _systemCounter, counterLimitReached(), curTick(), EventManager::deschedule(), SystemCounter::period(), EventManager::schedule(), Event::scheduled(), and value().

Referenced by setCompareValue(), and setOffset().

uint64_t ArchTimer::value

(

)

const

Returns the value of the counter which this timer relies on.

Definition at line 171 of file generic_timer.cc.

References _offset, _systemCounter, and SystemCounter::value().

Referenced by GenericTimer::readMiscReg(), setControl(), setTimerValue(), GenericTimerMem::timerRead(), timerValue(), and updateCounter().

Member Data Documentation

ArchTimerCtrl ArchTimer::_control

protected

Value of the control register ({CNTP/CNTHP/CNTV}_CTL).

Definition at line 146 of file generic_timer.hh.

Referenced by control(), counterLimitReached(), serialize(), setControl(), unserialize(), and updateCounter().

uint64_t ArchTimer::_counterLimit

protected

Programmed limit value for the upcounter ({CNTP/CNTHP/CNTV}_CVAL).

Definition at line 148 of file generic_timer.hh.

Referenced by compareValue(), serialize(), setCompareValue(), setControl(), timerValue(), and updateCounter().

EventWrapper<ArchTimer, &ArchTimer::counterLimitReached> ArchTimer::_counterLimitReachedEvent

protected

Definition at line 161 of file generic_timer.hh.

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

Interrupt ArchTimer::_interrupt

protected

Definition at line 143 of file generic_timer.hh.

Referenced by counterLimitReached().

uint64_t ArchTimer::_offset

protected

Offset relative to the physical timer (CNTVOFF)

Definition at line 150 of file generic_timer.hh.

Referenced by offset(), serialize(), setOffset(), unserialize(), and value().

EndBitUnion (ArchTimerCtrl) const std SimObject& ArchTimer::_parent

protected

Name of this timer.

Pointer to parent class.

Definition at line 133 of file generic_timer.hh.

Referenced by unserialize(), and updateCounter().

SystemCounter& ArchTimer::_systemCounter

protected

Definition at line 141 of file generic_timer.hh.

Referenced by updateCounter(), and value().

Bitfield<1> ArchTimer::imask

protected

Definition at line 131 of file generic_timer.hh.

Bitfield<2> ArchTimer::istatus

protected

Definition at line 132 of file generic_timer.hh.

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

• dev/arm/generic_timer.hh
• dev/arm/generic_timer.cc