gem5::Gicv2m Class Reference

#include <gic_v2m.hh>

Inheritance diagram for gem5::Gicv2m:

Public Types
typedef Gicv2mParams	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
	Gicv2m (const Params &p)
virtual AddrRangeList	getAddrRanges () const
	Return the address ranges used by the Gicv2m This is the set of frame addresses.
virtual Tick	read (PacketPtr pkt)
	A PIO read to the device.
virtual Tick	write (PacketPtr pkt)
	A PIO read to the device.
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)
void	serialize (CheckpointOut &cp) const override
	Serialize an object.
void	unserialize (CheckpointIn &cp) override
	Unserialize an object.
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

Private Member Functions
int	frameFromAddr (Addr a) const
	Determine which frame a PIO access lands in.

Private Attributes
const Tick	pioDelay
	Latency for an MMIO operation.
std::vector< Gicv2mFrame * >	frames
	A set of configured hardware frames.
BaseGic *	gic
	Gic to which we fire interrupts.
unsigned int	log2framenum
	Count of number of configured frames, as log2(frames)

Static Private Attributes
static const int	FRAME_SIZE = 0x10000
static const int	MSI_TYPER = 0x0008
static const int	MSI_SETSPI_NSR = 0x0040
static const int	PER_ID4 = 0x0fd0

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
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 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.

Detailed Description

Definition at line 75 of file gic_v2m.hh.

Member Typedef Documentation

Params

typedef Gicv2mParams gem5::Gicv2m::Params

Definition at line 97 of file gic_v2m.hh.

Constructor & Destructor Documentation

Gicv2m()

gem5::Gicv2m::Gicv2m

(

const Params &

p

)

Definition at line 70 of file gic_v2m.cc.

References fatal, fatal_if, gem5::floorLog2(), frames, gem5::ArmISA::i, gem5::isPowerOf2(), log2framenum, and gem5::RiscvISA::x.

Member Function Documentation

frameFromAddr()

int gem5::Gicv2m::frameFromAddr ( Addr a ) const

private

Determine which frame a PIO access lands in.

Definition at line 152 of file gic_v2m.cc.

References gem5::ArmISA::a, gem5::X86ISA::addr, FRAME_SIZE, frames, and gem5::ArmISA::i.

Referenced by read(), and write().

getAddrRanges()

AddrRangeList gem5::Gicv2m::getAddrRanges ( ) const

virtual

Return the address ranges used by the Gicv2m This is the set of frame addresses.

Implements gem5::PioDevice.

Definition at line 86 of file gic_v2m.cc.

References gem5::X86ISA::addr, FRAME_SIZE, frames, gem5::ArmISA::i, and gem5::RangeSize().

read()

Tick gem5::Gicv2m::read ( PacketPtr pkt )

virtual

A PIO read to the device.

Implements gem5::PioDevice.

Definition at line 96 of file gic_v2m.cc.

References DPRINTF, frameFromAddr(), frames, gem5::Packet::getAddr(), log2framenum, gem5::Packet::makeAtomicResponse(), MSI_TYPER, gem5::ArmISA::offset, PER_ID4, pioDelay, and gem5::Packet::setLE().

write()

Tick gem5::Gicv2m::write ( PacketPtr pkt )

virtual

A PIO read to the device.

Implements gem5::PioDevice.

Definition at line 126 of file gic_v2m.cc.

References DPRINTF, frameFromAddr(), frames, gem5::Packet::getAddr(), gem5::Packet::getLE(), gic, gem5::ArmISA::m, gem5::Packet::makeAtomicResponse(), MSI_SETSPI_NSR, gem5::ArmISA::offset, pioDelay, and gem5::BaseGic::sendInt().

Member Data Documentation

FRAME_SIZE

const int gem5::Gicv2m::FRAME_SIZE = 0x10000

staticprivate

Definition at line 78 of file gic_v2m.hh.

Referenced by frameFromAddr(), and getAddrRanges().

frames

std::vector<Gicv2mFrame *> gem5::Gicv2m::frames

private

A set of configured hardware frames.

Definition at line 88 of file gic_v2m.hh.

Referenced by frameFromAddr(), getAddrRanges(), Gicv2m(), read(), and write().

gic

BaseGic* gem5::Gicv2m::gic

private

Gic to which we fire interrupts.

Definition at line 91 of file gic_v2m.hh.

Referenced by write().

log2framenum

unsigned int gem5::Gicv2m::log2framenum

private

Count of number of configured frames, as log2(frames)

Definition at line 94 of file gic_v2m.hh.

Referenced by Gicv2m(), and read().

MSI_SETSPI_NSR

const int gem5::Gicv2m::MSI_SETSPI_NSR = 0x0040

staticprivate

Definition at line 81 of file gic_v2m.hh.

Referenced by write().

MSI_TYPER

const int gem5::Gicv2m::MSI_TYPER = 0x0008

staticprivate

Definition at line 80 of file gic_v2m.hh.

Referenced by read().

PER_ID4

const int gem5::Gicv2m::PER_ID4 = 0x0fd0

staticprivate

Definition at line 82 of file gic_v2m.hh.

Referenced by read().

pioDelay

const Tick gem5::Gicv2m::pioDelay

private

Latency for an MMIO operation.

Definition at line 85 of file gic_v2m.hh.

Referenced by read(), and write().

---

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

• dev/arm/gic_v2m.hh
• dev/arm/gic_v2m.cc