#include <i8254.hh>

Inheritance diagram for X86ISA::I8254:

Classes
class	X86Intel8254Timer

Public Types
typedef I8254Params	Params

Public Types inherited from BasicPioDevice
typedef BasicPioDeviceParams	Params

Public Types inherited from PioDevice
typedef PioDeviceParams	Params

Public Types inherited from ClockedObject
typedef ClockedObjectParams	Params
	Parameters of ClockedObject. More...

Public Types inherited from SimObject
typedef SimObjectParams	Params

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

const Params *	params () const

	I8254 (Params *p)

Tick	read (PacketPtr pkt) override
	Pure virtual function that the device must implement. More...

Tick	write (PacketPtr pkt) override
	Pure virtual function that the device must implement. More...

bool	outputHigh (unsigned int num)

uint8_t	readCounter (unsigned int num)

void	writeCounter (unsigned int num, const uint8_t data)

void	writeControl (uint8_t val)

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

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

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

Public Member Functions inherited from BasicPioDevice
	BasicPioDevice (const Params *p, Addr size)

const Params *	params () const

AddrRangeList	getAddrRanges () const override
	Determine the address ranges that this device responds to. More...

Public Member Functions inherited from PioDevice
	PioDevice (const Params *p)

virtual	~PioDevice ()

const Params *	params () const

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

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

const Params *	params () const

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 *_params)

virtual	~SimObject ()

virtual const std::string	name () const

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...

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...

	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

Protected Member Functions
void	counterInterrupt (unsigned int num)

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
Tick	latency

X86Intel8254Timer	pit

std::vector< IntSourcePin< I8254 > * >	intPin

Protected Attributes inherited from BasicPioDevice
Addr	pioAddr
	Address that the device listens to. More...

Addr	pioSize
	Size that the device's address range. More...

Tick	pioDelay
	Delay that the device experinces on an access. More...

Protected Attributes inherited from PioDevice
System *	sys

PioPort< PioDevice >	pioPort
	The pioPort that handles the requests for us and provides us requests that it sees. 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...

Additional Inherited Members
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)

Public Attributes inherited from ClockedObject
PowerState *	powerState

Detailed Description

Definition at line 40 of file i8254.hh.

Member Typedef Documentation

◆ Params

typedef I8254Params X86ISA::I8254::Params

Definition at line 69 of file i8254.hh.

Constructor & Destructor Documentation

◆ I8254()

X86ISA::I8254::I8254 ( Params * p )

inline

Definition at line 86 of file i8254.hh.

References csprintf(), ArmISA::i, intPin, SimObject::name(), and X86ISA::p.

Member Function Documentation

◆ counterInterrupt()

void X86ISA::I8254::counterInterrupt ( unsigned int num )

protected

Definition at line 37 of file i8254.cc.

References DPRINTF, and intPin.

Referenced by X86ISA::I8254::X86Intel8254Timer::counterInterrupt().

◆ getPort()

Port& X86ISA::I8254::getPort	(	const std::string &	if_name,
		PortID	idx = `InvalidPortID`
	)

inlineoverridevirtual

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 PioDevice.

Definition at line 72 of file i8254.hh.

References PioDevice::getPort(), and intPin.

◆ outputHigh()

bool X86ISA::I8254::outputHigh ( unsigned int num )

inline

Definition at line 99 of file i8254.hh.

References Intel8254Timer::outputHigh(), and pit.

◆ params()

const Params* X86ISA::I8254::params ( ) const

inline

Definition at line 81 of file i8254.hh.

References SimObject::_params.

◆ read()

Tick X86ISA::I8254::read ( PacketPtr pkt )

overridevirtual

Pure virtual function that the device must implement.

Called when a read command is recieved by the port.

Parameters

pkt	Packet describing this request

Returns: number of ticks it took to complete

Implements PioDevice.

Definition at line 50 of file i8254.cc.

References Packet::getAddr(), Packet::getSize(), Packet::makeAtomicResponse(), X86ISA::offset, panic, and Packet::setLE().

◆ readCounter()

uint8_t X86ISA::I8254::readCounter ( unsigned int num )

inline

Definition at line 105 of file i8254.hh.

References pit, and Intel8254Timer::readCounter().

◆ serialize()

void X86ISA::I8254::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 82 of file i8254.cc.

◆ startup()

void X86ISA::I8254::startup ( )

overridevirtual

startup() is the final initialization call before simulation.

All state is initialized (including unserialized state, if any, such as the curTick() value), so this is the appropriate place to schedule initial event(s) for objects that need them.

Reimplemented from SimObject.

Definition at line 94 of file i8254.cc.

◆ unserialize()

void X86ISA::I8254::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 88 of file i8254.cc.

◆ write()

Tick X86ISA::I8254::write ( PacketPtr pkt )

overridevirtual

Pure virtual function that the device must implement.

Called when a write command is recieved by the port.

Parameters

pkt	Packet describing this request

Returns: number of ticks it took to complete

Implements PioDevice.

Definition at line 66 of file i8254.cc.

References Packet::getAddr(), Packet::getLE(), Packet::getSize(), Packet::makeAtomicResponse(), X86ISA::offset, and panic.

◆ writeControl()

void X86ISA::I8254::writeControl ( uint8_t val )

inline

Definition at line 117 of file i8254.hh.

References pit, X86ISA::val, and Intel8254Timer::writeControl().

Referenced by Pc::init().

◆ writeCounter()

void X86ISA::I8254::writeCounter	(	unsigned int	num,
		const uint8_t	data
	)

inline

Definition at line 111 of file i8254.hh.

References data, pit, and Intel8254Timer::writeCounter().

Member Data Documentation

◆ intPin

std::vector<IntSourcePin<I8254> *> X86ISA::I8254::intPin

protected

Definition at line 64 of file i8254.hh.

Referenced by counterInterrupt(), getPort(), and I8254().

◆ latency

Tick X86ISA::I8254::latency

protected

Definition at line 43 of file i8254.hh.

◆ pit

X86Intel8254Timer X86ISA::I8254::pit

protected

Definition at line 62 of file i8254.hh.

Referenced by outputHigh(), readCounter(), writeControl(), and writeCounter().

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

dev/x86/i8254.hh
dev/x86/i8254.cc

Classes

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Params

Constructor & Destructor Documentation

◆ I8254()

Member Function Documentation

◆ counterInterrupt()

◆ getPort()

◆ outputHigh()

◆ params()

◆ read()

◆ readCounter()

◆ serialize()

◆ startup()

◆ unserialize()

◆ write()

◆ writeControl()

◆ writeCounter()

Member Data Documentation

◆ intPin

◆ latency

◆ pit