#include <gic.hh>

Inheritance diagram for MuxingKvmGic:

Public Member Functions
	MuxingKvmGic (const MuxingKvmGicParams *p)

	~MuxingKvmGic ()

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

DrainState	drain () override
	Draining is the process of clearing out the states of SimObjects.These are the SimObjects that are partially executed or are partially in flight. More...

void	drainResume () override
	Resume execution after a successful drain. More...

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...

void	sendInt (uint32_t num) override
	Post an interrupt from a device that is connected to the GIC. More...

void	clearInt (uint32_t num) override
	Clear an interrupt from a device that is connected to the GIC. More...

void	sendPPInt (uint32_t num, uint32_t cpu) override
	Interface call for private peripheral interrupts. More...

void	clearPPInt (uint32_t num, uint32_t cpu) override

Public Member Functions inherited from GicV2
const Params *	params () const

	GicV2 (const Params *p)

	~GicV2 ()

DrainState	drain () override
	Draining is the process of clearing out the states of SimObjects.These are the SimObjects that are partially executed or are partially in flight. More...

void	drainResume () override
	Resume execution after a successful drain. More...

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

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

AddrRangeList	getAddrRanges () const override
	Every PIO device is obliged to provide an implementation that returns the address ranges the device responds to. More...

Tick	read (PacketPtr pkt) override
	A PIO read to the device, immediately split up into readDistributor() or readCpu() More...

Tick	write (PacketPtr pkt) override
	A PIO read to the device, immediately split up into writeDistributor() or writeCpu() More...

void	sendInt (uint32_t number) override
	Post an interrupt from a device that is connected to the GIC. More...

void	clearInt (uint32_t number) override
	Clear an interrupt from a device that is connected to the GIC. More...

void	sendPPInt (uint32_t num, uint32_t cpu) override
	Interface call for private peripheral interrupts. More...

void	clearPPInt (uint32_t num, uint32_t cpu) override

bool	supportsVersion (GicVersion version) override
	Check if version supported. More...

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

virtual	~BaseGic ()

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

const Params *	params () const

ArmSystem *	getSystem () 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...

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	updateIntState (int hint) override
	See if some processor interrupt flags need to be enabled/disabled. More...

Protected Member Functions inherited from GicV2
	BitUnion32 (SWI) Bitfield< 3

	EndBitUnion (SWI) BitUnion32(IAR) Bitfield< 9

	EndBitUnion (IAR) BitUnion32(CTLR) Bitfield< 3 > fiqEn

BankedRegs &	getBankedRegs (ContextID)

uint32_t &	getIntEnabled (ContextID ctx, uint32_t ix)

uint32_t &	getPendingInt (ContextID ctx, uint32_t ix)

uint32_t &	getActiveInt (ContextID ctx, uint32_t ix)

uint32_t &	getIntGroup (ContextID ctx, uint32_t ix)

uint8_t &	getIntPriority (ContextID ctx, uint32_t ix)

uint32_t &	getIntConfig (ContextID ctx, uint32_t ix)
	Reads the GICD_ICFGRn register. More...

uint8_t	getCpuTarget (ContextID ctx, uint32_t ix) const

bool	isLevelSensitive (ContextID ctx, uint32_t int_num)

bool	isGroup0 (ContextID ctx, uint32_t int_num)

bool	isFiq (ContextID ctx, uint32_t int_num)
	This method checks if an interrupt ID must be signaled or has been signaled as a FIQ to the cpu. More...

bool	cpuEnabled (ContextID ctx) const
	CPU enabled: Checks if GICC_CTLR.EnableGrp0 or EnableGrp1 are set. More...

uint8_t	getCpuPriority (unsigned cpu)

void	softInt (ContextID ctx, SWI swi)
	software generated interrupt More...

void	updateRunPri ()
	Update the register that records priority of the highest priority active interrupt. More...

uint64_t	genSwiMask (int cpu)
	generate a bit mask to check cpuSgi for an interrupt. More...

int	intNumToWord (int num) const

int	intNumToBit (int num) const

void	clearInt (ContextID ctx, uint32_t int_num)
	Clears a cpu IRQ or FIQ signal. More...

void	postInt (uint32_t cpu, Tick when)
	Post an interrupt to a CPU with a delay. More...

void	postFiq (uint32_t cpu, Tick when)

void	postDelayedInt (uint32_t cpu)
	Deliver a delayed interrupt to the target CPU. More...

void	postDelayedFiq (uint32_t cpu)

Tick	readDistributor (PacketPtr pkt)
	Handle a read to the distributor portion of the GIC. More...

uint32_t	readDistributor (ContextID ctx, Addr daddr, size_t resp_sz)

uint32_t	readDistributor (ContextID ctx, Addr daddr) override

Tick	readCpu (PacketPtr pkt)
	Handle a read to the cpu portion of the GIC. More...

uint32_t	readCpu (ContextID ctx, Addr daddr) override

Tick	writeDistributor (PacketPtr pkt)
	Handle a write to the distributor portion of the GIC. More...

void	writeDistributor (ContextID ctx, Addr daddr, uint32_t data, size_t data_sz)

void	writeDistributor (ContextID ctx, Addr daddr, uint32_t data) override

Tick	writeCpu (PacketPtr pkt)
	Handle a write to the cpu portion of the GIC. More...

void	writeCpu (ContextID ctx, Addr daddr, uint32_t data) override

Protected Member Functions inherited from Drainable
	Drainable ()

virtual	~Drainable ()

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
System &	system
	System this interrupt controller belongs to. More...

KvmKernelGicV2 *	kernelGic
	Kernel GIC device. More...

Protected Attributes inherited from GicV2
const uint32_t	gicdPIDR

const uint32_t	gicdIIDR

const uint32_t	giccIIDR

	sgi_id

Bitfield< 23, 16 >	cpu_list

Bitfield< 25, 24 >	list_type

	ack_id

Bitfield< 12, 10 >	cpu_id

Bitfield< 1 >	enableGrp1

Bitfield< 0 >	enableGrp0

const EndBitUnion(CTLR) protected AddrRange	cpuRange
	Address range for the distributor interface. More...

const AddrRangeList	addrRanges
	All address ranges used by this GIC. More...

const Tick	distPioDelay
	Latency for a distributor operation. More...

const Tick	cpuPioDelay
	Latency for a cpu operation. More...

const Tick	intLatency
	Latency for a interrupt to get to CPU. More...

bool	enabled
	Gic enabled. More...

const bool	haveGem5Extensions
	Are gem5 extensions available? More...

bool	gem5ExtensionsEnabled
	gem5 many-core extension enabled by driver More...

uint32_t	itLines
	Number of itLines enabled. More...

std::vector< BankedRegs * >	bankedRegs

uint32_t	intEnabled [INT_BITS_MAX-1]
	GICD_I{S,C}ENABLER{1..31} interrupt enable bits for global interrupts 1b per interrupt, 32 bits per word, 31 words. More...

uint32_t	pendingInt [INT_BITS_MAX-1]
	GICD_I{S,C}PENDR{1..31} interrupt pending bits for global interrupts 1b per interrupt, 32 bits per word, 31 words. More...

uint32_t	activeInt [INT_BITS_MAX-1]
	GICD_I{S,C}ACTIVER{1..31} interrupt active bits for global interrupts 1b per interrupt, 32 bits per word, 31 words. More...

uint32_t	intGroup [INT_BITS_MAX-1]
	GICD_IGROUPR{1..31} interrupt group bits for global interrupts 1b per interrupt, 32 bits per word, 31 words. More...

uint32_t	iccrpr [CPU_MAX]
	read only running priority register, 1 per cpu More...

uint8_t	intPriority [GLOBAL_INT_LINES]
	GICD_IPRIORITYR{8..255} an 8 bit priority (lower is higher priority) for each of the global (not replicated per CPU) interrupts. More...

uint32_t	intConfig [INT_BITS_MAX *2 - 2]
	GICD_ICFGR{2...63} 2 bit per interrupt signaling if it's level or edge sensitive and if it is 1:N or N:N. More...

uint8_t	cpuTarget [GLOBAL_INT_LINES]
	GICD_ITARGETSR{8..255} an 8 bit cpu target id for each global interrupt. More...

CTLR	cpuControl [CPU_MAX]
	GICC_CTLR: CPU interface control register. More...

uint8_t	cpuPriority [CPU_MAX]
	CPU priority. More...

uint8_t	cpuBpr [CPU_MAX]
	Binary point registers. More...

uint32_t	cpuHighestInt [CPU_MAX]
	highest interrupt that is interrupting CPU More...

uint64_t	cpuSgiPending [SGI_MAX]
	One bit per cpu per software interrupt that is pending for each possible sgi source. More...

uint64_t	cpuSgiActive [SGI_MAX]

uint32_t	cpuSgiPendingExt [CPU_MAX]
	SGI pending arrays for gem5 GIC extension mode, which instead keeps 16 SGI pending bits for each of the (large number of) CPUs. More...

uint32_t	cpuSgiActiveExt [CPU_MAX]

uint32_t	cpuPpiPending [CPU_MAX]
	One bit per private peripheral interrupt. More...

uint32_t	cpuPpiActive [CPU_MAX]

EventFunctionWrapper *	postIntEvent [CPU_MAX]

EventFunctionWrapper *	postFiqEvent [CPU_MAX]

int	pendingDelayedInterrupts

Protected Attributes inherited from BaseGic
Platform *	platform
	Platform this GIC belongs to. 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...

Private Member Functions
void	fromGicV2ToKvm ()
	Multiplexing implementation. More...

void	fromKvmToGicV2 ()

void	copyGicState (BaseGicRegisters from, BaseGicRegisters to)

void	copyDistRegister (BaseGicRegisters from, BaseGicRegisters to, ContextID ctx, Addr daddr)

void	copyCpuRegister (BaseGicRegisters from, BaseGicRegisters to, ContextID ctx, Addr daddr)

void	copyBankedDistRange (BaseGicRegisters from, BaseGicRegisters to, Addr daddr, size_t size)

void	clearBankedDistRange (BaseGicRegisters *to, Addr daddr, size_t size)

void	copyDistRange (BaseGicRegisters from, BaseGicRegisters to, Addr daddr, size_t size)

void	clearDistRange (BaseGicRegisters *to, Addr daddr, size_t size)

Private Attributes
bool	usingKvm

Additional Inherited Members
Public Types inherited from GicV2
typedef GicV2Params	Params

Public Types inherited from BaseGic
enum	GicVersion { GicVersion::GIC_V2, GicVersion::GIC_V3, GicVersion::GIC_V4 }

typedef BaseGicParams	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

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

Protected Types inherited from GicV2
enum	{ GICD_CTLR = 0x000, GICD_TYPER = 0x004, GICD_IIDR = 0x008, GICD_SGIR = 0xf00, GICD_PIDR0 = 0xfe0, GICD_PIDR1 = 0xfe4, GICD_PIDR2 = 0xfe8, GICD_PIDR3 = 0xfec, DIST_SIZE = 0x1000 }

enum	{ GICC_CTLR = 0x00, GICC_PMR = 0x04, GICC_BPR = 0x08, GICC_IAR = 0x0C, GICC_EOIR = 0x10, GICC_RPR = 0x14, GICC_HPPIR = 0x18, GICC_ABPR = 0x1c, GICC_APR0 = 0xd0, GICC_APR1 = 0xd4, GICC_APR2 = 0xd8, GICC_APR3 = 0xdc, GICC_IIDR = 0xfc, GICC_DIR = 0x1000 }

Static Protected Attributes inherited from GicV2
static const AddrRange	GICD_IGROUPR

static const AddrRange	GICD_ISENABLER

static const AddrRange	GICD_ICENABLER

static const AddrRange	GICD_ISPENDR

static const AddrRange	GICD_ICPENDR

static const AddrRange	GICD_ISACTIVER

static const AddrRange	GICD_ICACTIVER

static const AddrRange	GICD_IPRIORITYR

static const AddrRange	GICD_ITARGETSR

static const AddrRange	GICD_ICFGR

static const int	SGI_MAX = 16

static const int	PPI_MAX = 16

static const int	SGI_MASK = 0xFFFF0000
	Mask off SGI's when setting/clearing pending bits. More...

static const int	NN_CONFIG_MASK = 0x55555555
	Mask for bits that config N:N mode in GICD_ICFGR's. More...

static const int	CPU_MAX = 256

static const int	SPURIOUS_INT = 1023

static const int	INT_BITS_MAX = 32

static const int	INT_LINES_MAX = 1020

static const int	GLOBAL_INT_LINES = INT_LINES_MAX - SGI_MAX - PPI_MAX

static const int	GICC_BPR_MINIMUM = 2
	minimum value for Binary Point Register ("IMPLEMENTATION DEFINED"); chosen for consistency with Linux's in-kernel KVM GIC model More...

Detailed Description

Definition at line 168 of file gic.hh.

Constructor & Destructor Documentation

◆ MuxingKvmGic()

MuxingKvmGic::MuxingKvmGic ( const MuxingKvmGicParams * p )

Definition at line 167 of file gic.cc.

References System::getKvmVM(), kernelGic, MipsISA::p, system, and ArmISA::vm.

◆ ~MuxingKvmGic()

MuxingKvmGic::~MuxingKvmGic ( )

Definition at line 179 of file gic.cc.

Member Function Documentation

◆ clearBankedDistRange()

void MuxingKvmGic::clearBankedDistRange	(	BaseGicRegisters *	to,
		Addr	daddr,
		size_t	size
	)

private

Definition at line 311 of file gic.cc.

References ArmISA::a, System::Threads::size(), system, System::threads, and BaseGicRegisters::writeDistributor().

Referenced by copyGicState().

◆ clearDistRange()

void MuxingKvmGic::clearDistRange	(	BaseGicRegisters *	to,
		Addr	daddr,
		size_t	size
	)

private

Definition at line 328 of file gic.cc.

References ArmISA::a, and BaseGicRegisters::writeDistributor().

Referenced by copyGicState().

◆ clearInt()

void MuxingKvmGic::clearInt ( uint32_t num )

overridevirtual

Clear an interrupt from a device that is connected to the GIC.

Depending on the configuration, the GIC may de-assert it's CPU line.

Parameters

num	number of interrupt to send

Implements BaseGic.

Definition at line 244 of file gic.cc.

References GicV2::clearInt(), KvmKernelGicV2::clearSPI(), DPRINTF, kernelGic, and usingKvm.

◆ clearPPInt()

void MuxingKvmGic::clearPPInt	(	uint32_t	num,
		uint32_t	cpu
	)

overridevirtual

Implements BaseGic.

Definition at line 263 of file gic.cc.

References KvmKernelGicV2::clearPPI(), GicV2::clearPPInt(), DPRINTF, kernelGic, and usingKvm.

◆ copyBankedDistRange()

void MuxingKvmGic::copyBankedDistRange	(	BaseGicRegisters *	from,
		BaseGicRegisters *	to,
		Addr	daddr,
		size_t	size
	)

private

Definition at line 302 of file gic.cc.

References ArmISA::a, copyDistRegister(), System::Threads::size(), system, and System::threads.

Referenced by copyGicState().

◆ copyCpuRegister()

void MuxingKvmGic::copyCpuRegister	(	BaseGicRegisters *	from,
		BaseGicRegisters *	to,
		ContextID	ctx,
		Addr	daddr
	)

private

Definition at line 293 of file gic.cc.

References DPRINTF, BaseGicRegisters::readCpu(), X86ISA::val, and BaseGicRegisters::writeCpu().

Referenced by copyGicState().

◆ copyDistRange()

void MuxingKvmGic::copyDistRange	(	BaseGicRegisters *	from,
		BaseGicRegisters *	to,
		Addr	daddr,
		size_t	size
	)

private

Definition at line 320 of file gic.cc.

References ArmISA::a, and copyDistRegister().

Referenced by copyGicState().

◆ copyDistRegister()

void MuxingKvmGic::copyDistRegister	(	BaseGicRegisters *	from,
		BaseGicRegisters *	to,
		ContextID	ctx,
		Addr	daddr
	)

private

Definition at line 284 of file gic.cc.

References DPRINTF, BaseGicRegisters::readDistributor(), X86ISA::val, and BaseGicRegisters::writeDistributor().

Referenced by copyBankedDistRange(), copyDistRange(), and copyGicState().

◆ copyGicState()

void MuxingKvmGic::copyGicState	(	BaseGicRegisters *	from,
		BaseGicRegisters *	to
	)

private

CPU state (GICC_*)

Distributor state (GICD_*)

Definition at line 336 of file gic.cc.

References clearBankedDistRange(), clearDistRange(), copyBankedDistRange(), copyCpuRegister(), copyDistRange(), copyDistRegister(), GicV2::GICC_BPR, GicV2::GICC_CTLR, GicV2::GICC_PMR, GicV2::GICD_CTLR, GicV2::GICD_ICACTIVER, GicV2::GICD_ICENABLER, GicV2::GICD_ICFGR, GicV2::GICD_ICPENDR, GicV2::GICD_IPRIORITYR, GicV2::GICD_ISACTIVER, GicV2::GICD_ISENABLER, GicV2::GICD_ISPENDR, GicV2::GICD_ITARGETSR, GicV2::itLines, System::Threads::size(), AddrRange::start(), system, and System::threads.

Referenced by fromGicV2ToKvm(), and fromKvmToGicV2().

◆ drain()

DrainState MuxingKvmGic::drain ( )

overridevirtual

Draining is the process of clearing out the states of SimObjects.These are the SimObjects that are partially executed or are partially in flight.

Draining is mostly used before forking and creating a check point.

This function notifies an object that it needs to drain its state.

If the object does not need further simulation to drain internal buffers, it returns DrainState::Drained and automatically switches to the Drained state. If the object needs more simulation, it returns DrainState::Draining and automatically enters the Draining state. Other return values are invalid.

Note: An object that has entered the Drained state can be disturbed by other objects in the system and consequently stop being drained. These perturbations are not visible in the drain state. The simulator therefore repeats the draining process until all objects return DrainState::Drained on the first call to drain().

Returns: DrainState::Drained if the object is drained at this point in time, DrainState::Draining if it needs further simulation.

Implements Drainable.

Definition at line 193 of file gic.cc.

References GicV2::drain(), fromKvmToGicV2(), and usingKvm.

◆ drainResume()

void MuxingKvmGic::drainResume ( )

overridevirtual

Resume execution after a successful drain.

Reimplemented from Drainable.

Definition at line 201 of file gic.cc.

References GicV2::drainResume(), fromGicV2ToKvm(), kernelGic, system, usingKvm, and System::validKvmEnvironment().

◆ fromGicV2ToKvm()

void MuxingKvmGic::fromGicV2ToKvm ( )

private

Multiplexing implementation.

Definition at line 409 of file gic.cc.

References copyGicState(), and kernelGic.

Referenced by drainResume(), and startup().

◆ fromKvmToGicV2()

void MuxingKvmGic::fromKvmToGicV2 ( )

private

Definition at line 415 of file gic.cc.

References copyGicState(), GicV2::cpuPriority, kernelGic, System::Threads::size(), system, and System::threads.

Referenced by drain().

◆ read()

Tick MuxingKvmGic::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 216 of file gic.cc.

References panic, GicV2::read(), and usingKvm.

◆ sendInt()

void MuxingKvmGic::sendInt ( uint32_t num )

overridevirtual

Post an interrupt from a device that is connected to the GIC.

Depending on the configuration, the GIC will pass this interrupt on through to a CPU.

Parameters

num	number of interrupt to send

Implements BaseGic.

Definition at line 234 of file gic.cc.

References DPRINTF, kernelGic, GicV2::sendInt(), KvmKernelGicV2::setSPI(), and usingKvm.

◆ sendPPInt()

void MuxingKvmGic::sendPPInt	(	uint32_t	num,
		uint32_t	cpu
	)

overridevirtual

Interface call for private peripheral interrupts.

Parameters

num	number of interrupt to send
cpu	CPU to forward interrupt to

Implements BaseGic.

Definition at line 254 of file gic.cc.

References DPRINTF, kernelGic, GicV2::sendPPInt(), KvmKernelGicV2::setPPI(), and usingKvm.

◆ startup()

void MuxingKvmGic::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 184 of file gic.cc.

References fromGicV2ToKvm(), kernelGic, SimObject::startup(), system, usingKvm, and System::validKvmEnvironment().

◆ updateIntState()

void MuxingKvmGic::updateIntState ( int hint )

overrideprotectedvirtual

See if some processor interrupt flags need to be enabled/disabled.

Parameters

hint	which set of interrupts needs to be checked

Reimplemented from GicV2.

Definition at line 273 of file gic.cc.

References GicV2::updateIntState(), and usingKvm.

◆ write()

Tick MuxingKvmGic::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 225 of file gic.cc.

References panic, usingKvm, and GicV2::write().

Member Data Documentation

◆ kernelGic

KvmKernelGicV2* MuxingKvmGic::kernelGic

protected

Kernel GIC device.

Definition at line 197 of file gic.hh.

Referenced by clearInt(), clearPPInt(), drainResume(), fromGicV2ToKvm(), fromKvmToGicV2(), MuxingKvmGic(), sendInt(), sendPPInt(), and startup().

◆ system

System& MuxingKvmGic::system

protected

System this interrupt controller belongs to.

Definition at line 194 of file gic.hh.

Referenced by clearBankedDistRange(), copyBankedDistRange(), copyGicState(), drainResume(), fromKvmToGicV2(), MuxingKvmGic(), and startup().

◆ usingKvm

bool MuxingKvmGic::usingKvm

private

Definition at line 200 of file gic.hh.

Referenced by clearInt(), clearPPInt(), drain(), drainResume(), read(), sendInt(), sendPPInt(), startup(), updateIntState(), and write().

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

arch/arm/kvm/gic.hh
arch/arm/kvm/gic.cc

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ MuxingKvmGic()

◆ ~MuxingKvmGic()

Member Function Documentation

◆ clearBankedDistRange()

◆ clearDistRange()

◆ clearInt()

◆ clearPPInt()

◆ copyBankedDistRange()

◆ copyCpuRegister()

◆ copyDistRange()

◆ copyDistRegister()

◆ copyGicState()

◆ drain()

◆ drainResume()

◆ fromGicV2ToKvm()

◆ fromKvmToGicV2()

◆ read()

◆ sendInt()

◆ sendPPInt()

◆ startup()

◆ updateIntState()

◆ write()

Member Data Documentation

◆ kernelGic

◆ system

◆ usingKvm