#include <uart8250.hh>

Inheritance diagram for Uart8250:

Public Types
typedef Uart8250Params	Params

Public Types inherited from Uart
typedef UartParams	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
const Params *	params () const

	Uart8250 (const 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...

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

void	dataAvailable () override
	Inform the uart that there is data available. More...

virtual bool	intStatus ()
	Return if we have an interrupt pending. 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 Uart
	Uart (const Params *p, Addr pio_size)

const Params *	params () const

bool	intStatus ()
	Return if we have an interrupt pending. More...

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

const Params *	params () const

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...

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

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...

	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	processIntrEvent (int intrBit)

void	scheduleIntr (Event *event)

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
uint8_t	IER

uint8_t	DLAB

uint8_t	LCR

uint8_t	MCR

Tick	lastTxInt

EventFunctionWrapper	txIntrEvent

EventFunctionWrapper	rxIntrEvent

Protected Attributes inherited from Uart
int	status

Platform *	platform

SerialDevice *	device

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 68 of file uart8250.hh.

Member Typedef Documentation

◆ Params

typedef Uart8250Params Uart8250::Params

Definition at line 81 of file uart8250.hh.

Constructor & Destructor Documentation

◆ Uart8250()

Uart8250::Uart8250 ( const Params * p )

Definition at line 86 of file uart8250.cc.

References processIntrEvent(), and TX_INT.

Member Function Documentation

◆ dataAvailable()

void Uart8250::dataAvailable ( )

overridevirtual

Inform the uart that there is data available.

Implements Uart.

Definition at line 264 of file uart8250.cc.

References IER, Uart::platform, Platform::postConsoleInt(), RX_INT, Uart::status, and UART_IER_RDI.

◆ getAddrRanges()

AddrRangeList Uart8250::getAddrRanges ( ) const

overridevirtual

Determine the address ranges that this device responds to.

Returns: a list of non-overlapping address ranges

Reimplemented from BasicPioDevice.

Definition at line 276 of file uart8250.cc.

References BasicPioDevice::pioAddr, BasicPioDevice::pioSize, and RangeSize().

◆ intStatus()

virtual bool Uart8250::intStatus ( )

inlinevirtual

Return if we have an interrupt pending.

Returns: interrupt status

Definition at line 103 of file uart8250.hh.

References Uart::status.

◆ params()

const Params* Uart8250::params ( ) const

inline

Definition at line 83 of file uart8250.hh.

References SimObject::_params.

◆ processIntrEvent()

void Uart8250::processIntrEvent ( int intrBit )

protected

Definition at line 48 of file uart8250.cc.

References curTick(), DPRINTF, IER, and ArmISA::status.

Referenced by Uart8250().

◆ read()

Tick Uart8250::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 94 of file uart8250.cc.

References Platform::clearConsoleInt(), SerialDevice::dataAvailable(), Uart::device, DPRINTF, Packet::getAddr(), Packet::getSize(), IER, IIR_NOPEND, IIR_RXID, IIR_TXID, LCR, Packet::makeAtomicResponse(), MCR, panic, BasicPioDevice::pioAddr, BasicPioDevice::pioDelay, BasicPioDevice::pioSize, Uart::platform, SerialDevice::readData(), RX_INT, rxIntrEvent, scheduleIntr(), Packet::setRaw(), Uart::status, TX_INT, UART_IER_RDI, UART_LSR_DR, UART_LSR_TEMT, and UART_LSR_THRE.

◆ scheduleIntr()

void Uart8250::scheduleIntr ( Event * event )

protected

Definition at line 74 of file uart8250.cc.

References curTick(), DPRINTF, MipsISA::event, and SimClock::Int::ns.

Referenced by read(), and write().

◆ serialize()

void Uart8250::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 284 of file uart8250.cc.

References DLAB, IER, LCR, MCR, rxIntrEvent, Event::scheduled(), SERIALIZE_SCALAR, Uart::status, txIntrEvent, and Event::when().

◆ unserialize()

void Uart8250::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 306 of file uart8250.cc.

References DLAB, IER, LCR, MCR, rxIntrEvent, EventManager::schedule(), Uart::status, txIntrEvent, and UNSERIALIZE_SCALAR.

◆ write()

Tick Uart8250::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 175 of file uart8250.cc.

References Platform::clearConsoleInt(), curTick(), SerialDevice::dataAvailable(), EventManager::deschedule(), Uart::device, DPRINTF, Packet::getAddr(), Packet::getRaw(), Packet::getSize(), IER, lastTxInt, LCR, Packet::makeAtomicResponse(), MCR, SimClock::Int::ns, panic, BasicPioDevice::pioAddr, BasicPioDevice::pioDelay, BasicPioDevice::pioSize, Uart::platform, EventFunctionWrapper::process(), RX_INT, rxIntrEvent, Event::scheduled(), scheduleIntr(), Uart::status, TX_INT, txIntrEvent, UART_IER_RDI, UART_IER_THRI, UART_MCR_LOOP, and SerialDevice::writeData().

Member Data Documentation

◆ DLAB

uint8_t Uart8250::DLAB

protected

Definition at line 71 of file uart8250.hh.

Referenced by serialize(), and unserialize().

◆ IER

uint8_t Uart8250::IER

protected

Definition at line 71 of file uart8250.hh.

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

◆ lastTxInt

Tick Uart8250::lastTxInt

protected

Definition at line 72 of file uart8250.hh.

Referenced by write().

◆ LCR

uint8_t Uart8250::LCR

protected

Definition at line 71 of file uart8250.hh.

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

◆ MCR

uint8_t Uart8250::MCR

protected

Definition at line 71 of file uart8250.hh.

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

◆ rxIntrEvent

EventFunctionWrapper Uart8250::rxIntrEvent

protected

Definition at line 78 of file uart8250.hh.

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

◆ txIntrEvent

EventFunctionWrapper Uart8250::txIntrEvent

protected

Definition at line 77 of file uart8250.hh.

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

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

dev/serial/uart8250.hh
dev/serial/uart8250.cc

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Params

Constructor & Destructor Documentation

◆ Uart8250()

Member Function Documentation

◆ dataAvailable()

◆ getAddrRanges()

◆ intStatus()

◆ params()

◆ processIntrEvent()

◆ read()

◆ scheduleIntr()

◆ serialize()

◆ unserialize()

◆ write()

Member Data Documentation

◆ DLAB

◆ IER

◆ lastTxInt

◆ LCR

◆ MCR

◆ rxIntrEvent

◆ txIntrEvent