#include <gic_v2.hh>

Inheritance diagram for GicV2:

Classes
struct	BankedRegs
	Registers "banked for each connected processor" per ARM IHI0048B. More...

Public Types
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

Public Member Functions
const Params *	params () const

	GicV2 (const Params *p)

	~GicV2 ()

DrainState	drain () override
	Notify an object that it needs to drain its state. 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
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...

const Params *	params () const

	SimObject (const Params *_params)

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)

void	setCurTick (Tick newVal)

	EventManager (EventManager &em)

	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 Types
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 }

Protected Member Functions
	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)

uint8_t	getIntConfig (ContextID ctx, uint32_t ix)
	GICD_ICFGRn get 2 bit config associated to an interrupt. More...

uint8_t	getCpuTarget (ContextID ctx, uint32_t ix)

bool	isLevelSensitive (ContextID ctx, uint32_t ix)

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...

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

EndBitUnion(CTLR) protected const 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...

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

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

Static Protected Attributes
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...

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)

static void	unserializeGlobals (CheckpointIn &cp)

Public Attributes inherited from ClockedObject
PowerState *	powerState

Detailed Description

Definition at line 59 of file gic_v2.hh.

Member Typedef Documentation

◆ Params

typedef GicV2Params GicV2::Params

Definition at line 441 of file gic_v2.hh.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

protected

Enumerator
GICD_CTLR
GICD_TYPER
GICD_IIDR
GICD_SGIR
GICD_PIDR0
GICD_PIDR1
GICD_PIDR2
GICD_PIDR3
DIST_SIZE

Definition at line 63 of file gic_v2.hh.

◆ anonymous enum

anonymous enum

protected

Enumerator
GICC_CTLR
GICC_PMR
GICC_BPR
GICC_IAR
GICC_EOIR
GICC_RPR
GICC_HPPIR
GICC_ABPR
GICC_APR0
GICC_APR1
GICC_APR2
GICC_APR3
GICC_IIDR
GICC_DIR

Definition at line 92 of file gic_v2.hh.

Constructor & Destructor Documentation

◆ GicV2()

GicV2::GicV2 ( const Params * p )

Definition at line 62 of file gic_v2.cc.

References activeInt, CPU_MAX, cpuBpr, cpuControl, cpuEnabled(), cpuHighestInt, cpuPioDelay, cpuPpiActive, cpuPpiPending, cpuPriority, cpuRange, cpuSgiActive, cpuSgiActiveExt, cpuSgiPending, cpuSgiPendingExt, cpuTarget, distPioDelay, DPRINTF, enabled, gem5ExtensionsEnabled, GICC_BPR_MINIMUM, haveGem5Extensions, iccrpr, intConfig, intEnabled, intLatency, intPriority, itLines, MipsISA::p, pendingDelayedInterrupts, pendingInt, postDelayedFiq(), postDelayedInt(), postFiqEvent, postIntEvent, SPURIOUS_INT, and RiscvISA::x.

Referenced by params(), and GicV2::BankedRegs::unserialize().

◆ ~GicV2()

GicV2::~GicV2 ( )

Definition at line 101 of file gic_v2.cc.

References CPU_MAX, postFiqEvent, postIntEvent, and RiscvISA::x.

Referenced by params().

Member Function Documentation

◆ BitUnion32()

GicV2::BitUnion32 ( SWI )

protected

◆ clearInt() [1/2]

void GicV2::clearInt	(	ContextID	ctx,
		uint32_t	int_num
	)

protected

Clears a cpu IRQ or FIQ signal.

Definition at line 913 of file gic_v2.cc.

References IntrControl::clear(), ArmISA::INT_FIQ, ArmISA::INT_IRQ, Platform::intrctrl, isFiq(), and BaseGic::platform.

Referenced by MuxingKvmGic::clearInt(), getAddrRanges(), intNumToBit(), readCpu(), and updateIntState().

◆ clearInt() [2/2]

void GicV2::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 885 of file gic_v2.cc.

References DPRINTF, getCpuTarget(), getPendingInt(), intNumToBit(), intNumToWord(), isLevelSensitive(), and updateIntState().

◆ clearPPInt()

void GicV2::clearPPInt	(	uint32_t	num,
		uint32_t	cpu
	)

overridevirtual

Implements BaseGic.

Definition at line 904 of file gic_v2.cc.

References cpuPpiPending, DPRINTF, intNumToWord(), SGI_MAX, and updateIntState().

Referenced by MuxingKvmGic::clearPPInt(), and getAddrRanges().

◆ cpuEnabled()

bool GicV2::cpuEnabled ( ContextID ctx ) const

inlineprotected

CPU enabled: Checks if GICC_CTLR.EnableGrp0 or EnableGrp1 are set.

Definition at line 363 of file gic_v2.hh.

References cpuControl.

Referenced by GicV2(), readCpu(), softInt(), updateIntState(), updateRunPri(), and writeCpu().

◆ drain()

DrainState GicV2::drain ( )

overridevirtual

Notify 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 967 of file gic_v2.cc.

References Drained, Draining, and pendingDelayedInterrupts.

Referenced by MuxingKvmGic::drain(), and params().

◆ drainResume()

void GicV2::drainResume ( )

overridevirtual

Resume execution after a successful drain.

Reimplemented from Drainable.

Definition at line 978 of file gic_v2.cc.

References updateIntState().

Referenced by MuxingKvmGic::drainResume(), and params().

◆ EndBitUnion() [1/2]

GicV2::EndBitUnion ( SWI )

protected

◆ EndBitUnion() [2/2]

GicV2::EndBitUnion ( IAR )

protected

◆ genSwiMask()

uint64_t GicV2::genSwiMask ( int cpu )

protected

generate a bit mask to check cpuSgi for an interrupt.

Definition at line 716 of file gic_v2.cc.

References System::numContexts(), panic, PioDevice::sys, and ULL.

Referenced by updateIntState(), and updateRunPri().

◆ getActiveInt()

uint32_t& GicV2::getActiveInt	(	ContextID	ctx,
		uint32_t	ix
	)

inlineprotected

Definition at line 243 of file gic_v2.hh.

References GicV2::BankedRegs::activeInt, and getBankedRegs().

Referenced by readCpu(), readDistributor(), updateIntState(), updateRunPri(), writeCpu(), and writeDistributor().

◆ getAddrRanges()

AddrRangeList GicV2::getAddrRanges ( ) const

inlineoverridevirtual

Every PIO device is obliged to provide an implementation that returns the address ranges the device responds to.

Returns: a list of non-overlapping address ranges

Implements PioDevice.

Definition at line 457 of file gic_v2.hh.

References addrRanges, clearInt(), clearPPInt(), read(), readDistributor(), sendInt(), sendPPInt(), supportsVersion(), and write().

◆ getBankedRegs()

GicV2::BankedRegs & GicV2::getBankedRegs ( ContextID ctx )

protected

Definition at line 636 of file gic_v2.cc.

References bankedRegs.

Referenced by getActiveInt(), getIntEnabled(), getIntGroup(), getIntPriority(), getPendingInt(), and unserialize().

◆ getCpuPriority()

uint8_t GicV2::getCpuPriority ( unsigned cpu )

protected

Definition at line 724 of file gic_v2.cc.

References cpuBpr, and cpuPriority.

Referenced by updateIntState().

◆ getCpuTarget()

uint8_t GicV2::getCpuTarget	(	ContextID	ctx,
		uint32_t	ix
	)

inlineprotected

Definition at line 299 of file gic_v2.hh.

References fatal_if, gem5ExtensionsEnabled, and SimObject::name().

Referenced by clearInt(), readDistributor(), sendInt(), and updateIntState().

◆ getIntConfig()

uint8_t GicV2::getIntConfig	(	ContextID	ctx,
		uint32_t	ix
	)

inlineprotected

GICD_ICFGRn get 2 bit config associated to an interrupt.

Definition at line 287 of file gic_v2.hh.

References bits(), intConfig, intNumToBit(), and intNumToWord().

Referenced by isLevelSensitive().

◆ getIntEnabled()

uint32_t& GicV2::getIntEnabled	(	ContextID	ctx,
		uint32_t	ix
	)

inlineprotected

Definition at line 216 of file gic_v2.hh.

References getBankedRegs(), and GicV2::BankedRegs::intEnabled.

Referenced by readDistributor(), updateIntState(), and writeDistributor().

◆ getIntGroup()

uint32_t& GicV2::getIntGroup	(	ContextID	ctx,
		uint32_t	ix
	)

inlineprotected

Definition at line 257 of file gic_v2.hh.

References getBankedRegs(), and GicV2::BankedRegs::intGroup.

Referenced by isGroup0(), readDistributor(), and writeDistributor().

◆ getIntPriority()

uint8_t& GicV2::getIntPriority	(	ContextID	ctx,
		uint32_t	ix
	)

inlineprotected

Definition at line 275 of file gic_v2.hh.

References getBankedRegs(), GicV2::BankedRegs::intPriority, and PPI_MAX.

Referenced by readDistributor(), updateIntState(), updateRunPri(), and writeDistributor().

◆ getPendingInt()

uint32_t& GicV2::getPendingInt	(	ContextID	ctx,
		uint32_t	ix
	)

inlineprotected

Definition at line 229 of file gic_v2.hh.

References getBankedRegs(), and GicV2::BankedRegs::pendingInt.

Referenced by clearInt(), readCpu(), readDistributor(), sendInt(), updateIntState(), and writeDistributor().

◆ intNumToBit()

int GicV2::intNumToBit ( int num ) const

inlineprotected

Definition at line 419 of file gic_v2.hh.

References clearInt(), postDelayedFiq(), postDelayedInt(), postFiq(), and postInt().

Referenced by clearInt(), getIntConfig(), isGroup0(), readCpu(), sendInt(), updateIntState(), updateRunPri(), and writeCpu().

◆ intNumToWord()

int GicV2::intNumToWord ( int num ) const

inlineprotected

Definition at line 418 of file gic_v2.hh.

Referenced by clearInt(), clearPPInt(), getIntConfig(), isGroup0(), readCpu(), sendInt(), sendPPInt(), updateIntState(), updateRunPri(), and writeCpu().

◆ isFiq()

bool GicV2::isFiq	(	ContextID	ctx,
		uint32_t	int_num
	)

inlineprotected

This method checks if an interrupt ID must be signaled or has been signaled as a FIQ to the cpu.

It does that by reading:

1) GICD_IGROUPR: controls if the interrupt is part of group0 or group1. Only group0 interrupts can be signaled as FIQs.

2) GICC_CTLR.FIQEn: controls whether the CPU interface signals Group 0 interrupts to a target processor using the FIQ or the IRQ signal

Definition at line 349 of file gic_v2.hh.

References cpuControl, and isGroup0().

Referenced by clearInt(), and updateIntState().

◆ isGroup0()

bool GicV2::isGroup0	(	ContextID	ctx,
		uint32_t	int_num
	)

inlineprotected

Definition at line 334 of file gic_v2.hh.

References bits(), getIntGroup(), intNumToBit(), and intNumToWord().

Referenced by isFiq().

◆ isLevelSensitive()

bool GicV2::isLevelSensitive	(	ContextID	ctx,
		uint32_t	ix
	)

inlineprotected

Definition at line 326 of file gic_v2.hh.

References bits(), and getIntConfig().

Referenced by clearInt(), readCpu(), and updateIntState().

◆ params()

const Params* GicV2::params ( ) const

inline

Definition at line 443 of file gic_v2.hh.

References SimObject::_params, drain(), drainResume(), GicV2(), MipsISA::p, serialize(), unserialize(), and ~GicV2().

◆ postDelayedFiq()

void GicV2::postDelayedFiq ( uint32_t cpu )

protected

Definition at line 957 of file gic_v2.cc.

References ArmISA::INT_FIQ, Platform::intrctrl, pendingDelayedInterrupts, BaseGic::platform, IntrControl::post(), and Drainable::signalDrainDone().

Referenced by GicV2(), and intNumToBit().

◆ postDelayedInt()

void GicV2::postDelayedInt ( uint32_t cpu )

protected

Deliver a delayed interrupt to the target CPU.

Definition at line 932 of file gic_v2.cc.

References ArmISA::INT_IRQ, Platform::intrctrl, pendingDelayedInterrupts, BaseGic::platform, IntrControl::post(), and Drainable::signalDrainDone().

Referenced by GicV2(), and intNumToBit().

◆ postFiq()

void GicV2::postFiq	(	uint32_t	cpu,
		Tick	when
	)

protected

Definition at line 942 of file gic_v2.cc.

References EventManager::eventq, pendingDelayedInterrupts, postFiqEvent, and EventQueue::schedule().

Referenced by intNumToBit(), and updateIntState().

◆ postInt()

void GicV2::postInt	(	uint32_t	cpu,
		Tick	when
	)

protected

Post an interrupt to a CPU with a delay.

Definition at line 923 of file gic_v2.cc.

References EventManager::eventq, pendingDelayedInterrupts, postIntEvent, and EventQueue::schedule().

Referenced by intNumToBit(), and updateIntState().

◆ read()

Tick GicV2::read ( PacketPtr pkt )

overridevirtual

A PIO read to the device, immediately split up into readDistributor() or readCpu()

Implements PioDevice.

Definition at line 110 of file gic_v2.cc.

References addr, AddrRange::contains(), cpuRange, Packet::getAddr(), panic, readCpu(), and readDistributor().

Referenced by getAddrRanges(), and MuxingKvmGic::read().

◆ readCpu() [1/2]

Tick GicV2::readCpu ( PacketPtr pkt )

protected

Handle a read to the cpu portion of the GIC.

Parameters

pkt	packet to respond to

Definition at line 288 of file gic_v2.cc.

References cpuPioDelay, cpuRange, DPRINTF, Packet::getAddr(), Packet::makeAtomicResponse(), Packet::req, Packet::setLE(), and AddrRange::start().

Referenced by read(), and readDistributor().

◆ readCpu() [2/2]

uint32_t GicV2::readCpu	(	ContextID	ctx,
		Addr	daddr
	)

overrideprotectedvirtual

Implements BaseGicRegisters.

Definition at line 306 of file gic_v2.cc.

References bits(), clearInt(), cpuBpr, cpuControl, cpuEnabled(), cpuHighestInt, cpuPpiActive, cpuPpiPending, cpuPriority, cpuSgiActive, cpuSgiActiveExt, cpuSgiPending, cpuSgiPendingExt, DPRINTF, enabled, gem5ExtensionsEnabled, getActiveInt(), getPendingInt(), GICC_BPR, GICC_CTLR, GICC_HPPIR, GICC_IAR, GICC_IIDR, GICC_PMR, GICC_RPR, giccIIDR, iccrpr, intNumToBit(), intNumToWord(), isLevelSensitive(), System::numRunningContexts(), panic, panic_if, PPI_MAX, SGI_MAX, SPURIOUS_INT, PioDevice::sys, ULL, updateIntState(), updateRunPri(), and RiscvISA::x.

◆ readDistributor() [1/3]

Tick GicV2::readDistributor ( PacketPtr pkt )

protected

Handle a read to the distributor portion of the GIC.

Parameters

pkt	packet to respond to

Definition at line 137 of file gic_v2.cc.

References distPioDelay, DPRINTF, Packet::getAddr(), Packet::getSize(), Packet::makeAtomicResponse(), panic, Packet::req, and Packet::setLE().

Referenced by getAddrRanges(), read(), and readDistributor().

◆ readDistributor() [2/3]

uint32_t GicV2::readDistributor	(	ContextID	ctx,
		Addr	daddr,
		size_t	resp_sz
	)

protected

Todo:: software generated interrupts and PPIs can't be configured in some ways

Definition at line 166 of file gic_v2.cc.

References AddrRange::contains(), DPRINTF, enabled, getActiveInt(), getCpuTarget(), getIntEnabled(), getIntGroup(), getIntPriority(), getPendingInt(), GICD_CTLR, GICD_ICACTIVER, GICD_ICENABLER, GICD_ICFGR, GICD_ICPENDR, GICD_IGROUPR, GICD_IIDR, GICD_IPRIORITYR, GICD_ISACTIVER, GICD_ISENABLER, GICD_ISPENDR, GICD_ITARGETSR, GICD_PIDR0, GICD_PIDR1, GICD_PIDR2, GICD_PIDR3, GICD_TYPER, gicdIIDR, gicdPIDR, haveGem5Extensions, INT_BITS_MAX, INT_LINES_MAX, intConfig, itLines, mbits(), System::numRunningContexts(), panic, AddrRange::start(), and PioDevice::sys.

◆ readDistributor() [3/3]

uint32_t GicV2::readDistributor	(	ContextID	ctx,
		Addr	daddr
	)

inlineoverrideprotectedvirtual

Implements BaseGicRegisters.

Definition at line 485 of file gic_v2.hh.

References data, readCpu(), readDistributor(), and writeDistributor().

◆ sendInt()

void GicV2::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 862 of file gic_v2.cc.

References DPRINTF, gem5ExtensionsEnabled, getCpuTarget(), getPendingInt(), intNumToBit(), intNumToWord(), panic, panic_if, PPI_MAX, SGI_MAX, and updateIntState().

Referenced by getAddrRanges(), and MuxingKvmGic::sendInt().

◆ sendPPInt()

void GicV2::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 876 of file gic_v2.cc.

References cpuPpiPending, DPRINTF, intNumToWord(), SGI_MAX, and updateIntState().

Referenced by getAddrRanges(), and MuxingKvmGic::sendPPInt().

◆ serialize()

void GicV2::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 985 of file gic_v2.cc.

References activeInt, bankedRegs, CPU_MAX, cpuBpr, cpuControl, cpuHighestInt, cpuPpiActive, cpuPpiPending, cpuPriority, cpuSgiActive, cpuSgiActiveExt, cpuSgiPending, cpuSgiPendingExt, cpuTarget, csprintf(), DPRINTF, enabled, gem5ExtensionsEnabled, GLOBAL_INT_LINES, ArmISA::i, iccrpr, INT_BITS_MAX, intConfig, intEnabled, intGroup, intPriority, itLines, pendingInt, SERIALIZE_ARRAY, SERIALIZE_SCALAR, and SGI_MAX.

Referenced by params().

◆ softInt()

void GicV2::softInt	(	ContextID	ctx,
		SWI	swi
	)

protected

software generated interrupt

Parameters

data	data to decode that indicates which cpus to interrupt

Definition at line 646 of file gic_v2.cc.

References cpu_list, cpuEnabled(), cpuSgiPending, cpuSgiPendingExt, DPRINTF, gem5ExtensionsEnabled, ArmISA::i, System::numContexts(), PioDevice::sys, updateIntState(), and RiscvISA::x.

Referenced by writeDistributor().

◆ supportsVersion()

bool GicV2::supportsVersion ( GicVersion version )

overridevirtual

Check if version supported.

Implements BaseGic.

Definition at line 951 of file gic_v2.cc.

References BaseGic::GIC_V2.

Referenced by getAddrRanges().

◆ unserialize()

void GicV2::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 1029 of file gic_v2.cc.

References activeInt, CPU_MAX, cpuBpr, cpuControl, cpuHighestInt, cpuPpiActive, cpuPpiPending, cpuPriority, cpuSgiActive, cpuSgiActiveExt, cpuSgiPending, cpuSgiPendingExt, cpuTarget, csprintf(), Serializable::currentSection(), DPRINTF, enabled, CheckpointIn::entryExists(), gem5ExtensionsEnabled, getBankedRegs(), GLOBAL_INT_LINES, ArmISA::i, iccrpr, INT_BITS_MAX, intConfig, intEnabled, intGroup, intPriority, itLines, pendingInt, postIntEvent, EventManager::schedule(), CheckpointIn::sectionExists(), SGI_MAX, GicV2::BankedRegs::unserialize(), UNSERIALIZE_ARRAY, UNSERIALIZE_OPT_SCALAR, and UNSERIALIZE_SCALAR.

Referenced by params().

◆ updateIntState()

void GicV2::updateIntState ( int hint )

protectedvirtual

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

Parameters

hint	which set of interrupts needs to be checked

Reimplemented in MuxingKvmGic.

Definition at line 735 of file gic_v2.cc.

References bits(), clearInt(), cpuEnabled(), cpuHighestInt, cpuPpiPending, cpuSgiPending, cpuSgiPendingExt, curTick(), DPRINTF, enabled, gem5ExtensionsEnabled, genSwiMask(), getActiveInt(), getCpuPriority(), getCpuTarget(), getIntEnabled(), getIntPriority(), getPendingInt(), INT_BITS_MAX, intLatency, intNumToBit(), intNumToWord(), isFiq(), isLevelSensitive(), itLines, System::numContexts(), System::numRunningContexts(), postFiq(), postInt(), PPI_MAX, SGI_MAX, SPURIOUS_INT, PioDevice::sys, and RiscvISA::x.

Referenced by clearInt(), clearPPInt(), drainResume(), readCpu(), sendInt(), sendPPInt(), softInt(), MuxingKvmGic::updateIntState(), writeCpu(), and writeDistributor().

◆ updateRunPri()

void GicV2::updateRunPri ( )

protected

Update the register that records priority of the highest priority active interrupt.

Definition at line 833 of file gic_v2.cc.

References cpuEnabled(), cpuPpiActive, cpuSgiActive, cpuSgiActiveExt, genSwiMask(), getActiveInt(), getIntPriority(), ArmISA::i, iccrpr, intNumToBit(), intNumToWord(), itLines, System::numContexts(), PPI_MAX, SGI_MAX, and PioDevice::sys.

Referenced by readCpu(), writeCpu(), and writeDistributor().

◆ write()

Tick GicV2::write ( PacketPtr pkt )

overridevirtual

A PIO read to the device, immediately split up into writeDistributor() or writeCpu()

Implements PioDevice.

Definition at line 124 of file gic_v2.cc.

References addr, AddrRange::contains(), cpuRange, Packet::getAddr(), panic, writeCpu(), and writeDistributor().

Referenced by getAddrRanges(), and MuxingKvmGic::write().

◆ writeCpu() [1/2]

Tick GicV2::writeCpu ( PacketPtr pkt )

protected

Handle a write to the cpu portion of the GIC.

Parameters

pkt	packet to respond to

Definition at line 555 of file gic_v2.cc.

References cpuPioDelay, cpuRange, data, DPRINTF, Packet::getAddr(), Packet::getLE(), Packet::makeAtomicResponse(), Packet::req, and AddrRange::start().

Referenced by write(), and writeDistributor().

◆ writeCpu() [2/2]

void GicV2::writeCpu	(	ContextID	ctx,
		Addr	daddr,
		uint32_t	data
	)

overrideprotectedvirtual

Implements BaseGicRegisters.

Definition at line 573 of file gic_v2.cc.

References cpuBpr, cpuControl, cpuEnabled(), cpuPpiActive, cpuPriority, cpuSgiActive, cpuSgiActiveExt, data, DPRINTF, gem5ExtensionsEnabled, getActiveInt(), GICC_APR0, GICC_APR1, GICC_APR2, GICC_APR3, GICC_BPR, GICC_BPR_MINIMUM, GICC_CTLR, GICC_DIR, GICC_EOIR, GICC_PMR, intNumToBit(), intNumToWord(), panic, PPI_MAX, SGI_MAX, ULL, updateIntState(), updateRunPri(), and warn.

◆ writeDistributor() [1/3]

Tick GicV2::writeDistributor ( PacketPtr pkt )

protected

Handle a write to the distributor portion of the GIC.

Parameters

pkt	packet to respond to

Definition at line 386 of file gic_v2.cc.

References distPioDelay, DPRINTF, Packet::getAddr(), Packet::getLE(), Packet::getSize(), Packet::makeAtomicResponse(), panic, and Packet::req.

Referenced by readDistributor(), write(), and writeDistributor().

◆ writeDistributor() [2/3]

void GicV2::writeDistributor	(	ContextID	ctx,
		Addr	daddr,
		uint32_t	data,
		size_t	data_sz
	)

protected

Definition at line 421 of file gic_v2.cc.

References bits(), AddrRange::contains(), cpuTarget, data, DPRINTF, enabled, gem5ExtensionsEnabled, getActiveInt(), getIntEnabled(), getIntGroup(), getIntPriority(), getPendingInt(), GICD_CTLR, GICD_ICACTIVER, GICD_ICENABLER, GICD_ICFGR, GICD_ICPENDR, GICD_IGROUPR, GICD_IPRIORITYR, GICD_ISACTIVER, GICD_ISENABLER, GICD_ISPENDR, GICD_ITARGETSR, GICD_SGIR, GICD_TYPER, haveGem5Extensions, INT_BITS_MAX, intConfig, ArmISA::mask, NN_CONFIG_MASK, ArmISA::offset, panic, PPI_MAX, SGI_MASK, SGI_MAX, softInt(), AddrRange::start(), updateIntState(), updateRunPri(), and warn.

◆ writeDistributor() [3/3]

void GicV2::writeDistributor	(	ContextID	ctx,
		Addr	daddr,
		uint32_t	data
	)

inlineoverrideprotectedvirtual

Implements BaseGicRegisters.

Definition at line 501 of file gic_v2.hh.

References writeCpu(), and writeDistributor().

Member Data Documentation

◆ ack_id

GicV2::ack_id

protected

Definition at line 135 of file gic_v2.hh.

◆ activeInt

uint32_t GicV2::activeInt[INT_BITS_MAX-1]

protected

GICD_I{S,C}ACTIVER{1..31} interrupt active bits for global interrupts 1b per interrupt, 32 bits per word, 31 words.

Definition at line 241 of file gic_v2.hh.

Referenced by GicV2(), GicV2::BankedRegs::serialize(), serialize(), GicV2::BankedRegs::unserialize(), and unserialize().

◆ addrRanges

const AddrRangeList GicV2::addrRanges

protected

All address ranges used by this GIC.

Definition at line 153 of file gic_v2.hh.

Referenced by getAddrRanges().

◆ bankedRegs

std::vector<BankedRegs*> GicV2::bankedRegs

protected

Definition at line 207 of file gic_v2.hh.

Referenced by getBankedRegs(), and serialize().

◆ cpu_id

Bitfield<12,10> GicV2::cpu_id

protected

Definition at line 136 of file gic_v2.hh.

◆ cpu_list

Bitfield<23,16> GicV2::cpu_list

protected

Definition at line 130 of file gic_v2.hh.

Referenced by softInt().

◆ CPU_MAX

const int GicV2::CPU_MAX = 256

staticprotected

Definition at line 118 of file gic_v2.hh.

Referenced by GicV2(), serialize(), unserialize(), and ~GicV2().

◆ cpuBpr

uint8_t GicV2::cpuBpr[CPU_MAX]

protected

Binary point registers.

Definition at line 378 of file gic_v2.hh.

Referenced by getCpuPriority(), GicV2(), readCpu(), serialize(), unserialize(), and writeCpu().

◆ cpuControl

CTLR GicV2::cpuControl[CPU_MAX]

protected

GICC_CTLR: CPU interface control register.

Definition at line 371 of file gic_v2.hh.

Referenced by cpuEnabled(), GicV2(), isFiq(), readCpu(), serialize(), unserialize(), and writeCpu().

◆ cpuHighestInt

uint32_t GicV2::cpuHighestInt[CPU_MAX]

protected

highest interrupt that is interrupting CPU

Definition at line 381 of file gic_v2.hh.

Referenced by GicV2(), readCpu(), serialize(), unserialize(), and updateIntState().

◆ cpuPioDelay

const Tick GicV2::cpuPioDelay

protected

Latency for a cpu operation.

Definition at line 159 of file gic_v2.hh.

Referenced by GicV2(), readCpu(), and writeCpu().

◆ cpuPpiActive

uint32_t GicV2::cpuPpiActive[CPU_MAX]

protected

Definition at line 399 of file gic_v2.hh.

Referenced by GicV2(), readCpu(), serialize(), unserialize(), updateRunPri(), and writeCpu().

◆ cpuPpiPending

uint32_t GicV2::cpuPpiPending[CPU_MAX]

protected

One bit per private peripheral interrupt.

Only upper 16 bits will be used since PPI interrupts are numberred from 16 to 32

Definition at line 398 of file gic_v2.hh.

Referenced by clearPPInt(), GicV2(), readCpu(), sendPPInt(), serialize(), unserialize(), and updateIntState().

◆ cpuPriority

uint8_t GicV2::cpuPriority[CPU_MAX]

protected

CPU priority.

Definition at line 374 of file gic_v2.hh.

Referenced by MuxingKvmGic::fromKvmToGicV2(), getCpuPriority(), GicV2(), readCpu(), serialize(), unserialize(), and writeCpu().

◆ cpuRange

EndBitUnion (CTLR) protected const AddrRange GicV2::cpuRange

protected

Address range for the distributor interface.

Address range for the CPU interfaces

Definition at line 143 of file gic_v2.hh.

Referenced by GicV2(), read(), readCpu(), write(), and writeCpu().

◆ cpuSgiActive

uint64_t GicV2::cpuSgiActive[SGI_MAX]

protected

Definition at line 388 of file gic_v2.hh.

Referenced by GicV2(), readCpu(), serialize(), unserialize(), updateRunPri(), and writeCpu().

◆ cpuSgiActiveExt

uint32_t GicV2::cpuSgiActiveExt[CPU_MAX]

protected

Definition at line 394 of file gic_v2.hh.

Referenced by GicV2(), readCpu(), serialize(), unserialize(), updateRunPri(), and writeCpu().

◆ cpuSgiPending

uint64_t GicV2::cpuSgiPending[SGI_MAX]

protected

One bit per cpu per software interrupt that is pending for each possible sgi source.

Indexed by SGI number. Each byte in generating cpu id and bits in position is destination id. e.g. 0x4 = CPU 0 generated interrupt for CPU 2.

Definition at line 387 of file gic_v2.hh.

Referenced by GicV2(), readCpu(), serialize(), softInt(), unserialize(), and updateIntState().

◆ cpuSgiPendingExt

uint32_t GicV2::cpuSgiPendingExt[CPU_MAX]

protected

SGI pending arrays for gem5 GIC extension mode, which instead keeps 16 SGI pending bits for each of the (large number of) CPUs.

Definition at line 393 of file gic_v2.hh.

Referenced by GicV2(), readCpu(), serialize(), softInt(), unserialize(), and updateIntState().

◆ cpuTarget

uint8_t GicV2::cpuTarget[GLOBAL_INT_LINES]

protected

GICD_ITARGETSR{8..255} an 8 bit cpu target id for each global interrupt.

Definition at line 297 of file gic_v2.hh.

Referenced by GicV2(), serialize(), unserialize(), and writeDistributor().

◆ distPioDelay

const Tick GicV2::distPioDelay

protected

Latency for a distributor operation.

Definition at line 156 of file gic_v2.hh.

Referenced by GicV2(), readDistributor(), and writeDistributor().

◆ enabled

bool GicV2::enabled

protected

Gic enabled.

Definition at line 166 of file gic_v2.hh.

Referenced by GicV2(), readCpu(), readDistributor(), serialize(), unserialize(), updateIntState(), and writeDistributor().

◆ enableGrp0

Bitfield<0> GicV2::enableGrp0

protected

Definition at line 142 of file gic_v2.hh.

◆ enableGrp1

Bitfield<1> GicV2::enableGrp1

protected

Definition at line 141 of file gic_v2.hh.

◆ gem5ExtensionsEnabled

bool GicV2::gem5ExtensionsEnabled

protected

gem5 many-core extension enabled by driver

Definition at line 172 of file gic_v2.hh.

Referenced by getCpuTarget(), GicV2(), readCpu(), sendInt(), serialize(), softInt(), unserialize(), updateIntState(), writeCpu(), and writeDistributor().

◆ GICC_BPR_MINIMUM

const int GicV2::GICC_BPR_MINIMUM = 2

staticprotected

minimum value for Binary Point Register ("IMPLEMENTATION DEFINED"); chosen for consistency with Linux's in-kernel KVM GIC model

Definition at line 126 of file gic_v2.hh.

Referenced by GicV2(), and writeCpu().

◆ giccIIDR

const uint32_t GicV2::giccIIDR

protected

Definition at line 78 of file gic_v2.hh.

Referenced by readCpu().

◆ GICD_ICACTIVER

const AddrRange GicV2::GICD_ICACTIVER

staticprotected

Definition at line 86 of file gic_v2.hh.

Referenced by MuxingKvmGic::copyGicState(), readDistributor(), and writeDistributor().

◆ GICD_ICENABLER

const AddrRange GicV2::GICD_ICENABLER

staticprotected

Definition at line 82 of file gic_v2.hh.

Referenced by MuxingKvmGic::copyGicState(), readDistributor(), and writeDistributor().

◆ GICD_ICFGR

const AddrRange GicV2::GICD_ICFGR

staticprotected

Definition at line 89 of file gic_v2.hh.

Referenced by MuxingKvmGic::copyGicState(), readDistributor(), and writeDistributor().

◆ GICD_ICPENDR

const AddrRange GicV2::GICD_ICPENDR

staticprotected

Definition at line 84 of file gic_v2.hh.

Referenced by MuxingKvmGic::copyGicState(), readDistributor(), and writeDistributor().

◆ GICD_IGROUPR

const AddrRange GicV2::GICD_IGROUPR

staticprotected

Definition at line 80 of file gic_v2.hh.

Referenced by readDistributor(), and writeDistributor().

◆ GICD_IPRIORITYR

const AddrRange GicV2::GICD_IPRIORITYR

staticprotected

Definition at line 87 of file gic_v2.hh.

Referenced by MuxingKvmGic::copyGicState(), readDistributor(), and writeDistributor().

◆ GICD_ISACTIVER

const AddrRange GicV2::GICD_ISACTIVER

staticprotected

Definition at line 85 of file gic_v2.hh.

Referenced by MuxingKvmGic::copyGicState(), readDistributor(), and writeDistributor().

◆ GICD_ISENABLER

const AddrRange GicV2::GICD_ISENABLER

staticprotected

Definition at line 81 of file gic_v2.hh.

Referenced by MuxingKvmGic::copyGicState(), readDistributor(), and writeDistributor().

◆ GICD_ISPENDR

const AddrRange GicV2::GICD_ISPENDR

staticprotected

Definition at line 83 of file gic_v2.hh.

Referenced by MuxingKvmGic::copyGicState(), readDistributor(), and writeDistributor().

◆ GICD_ITARGETSR

const AddrRange GicV2::GICD_ITARGETSR

staticprotected

Definition at line 88 of file gic_v2.hh.

Referenced by MuxingKvmGic::copyGicState(), readDistributor(), and writeDistributor().

◆ gicdIIDR

const uint32_t GicV2::gicdIIDR

protected

Definition at line 77 of file gic_v2.hh.

Referenced by readDistributor().

◆ gicdPIDR

const uint32_t GicV2::gicdPIDR

protected

Definition at line 76 of file gic_v2.hh.

Referenced by readDistributor().

◆ GLOBAL_INT_LINES

const int GicV2::GLOBAL_INT_LINES = INT_LINES_MAX - SGI_MAX - PPI_MAX

staticprotected

Definition at line 122 of file gic_v2.hh.

Referenced by serialize(), and unserialize().

◆ haveGem5Extensions

const bool GicV2::haveGem5Extensions

protected

Are gem5 extensions available?

Definition at line 169 of file gic_v2.hh.

Referenced by GicV2(), readDistributor(), and writeDistributor().

◆ iccrpr

uint32_t GicV2::iccrpr[CPU_MAX]

protected

read only running priority register, 1 per cpu

Definition at line 267 of file gic_v2.hh.

Referenced by GicV2(), readCpu(), serialize(), unserialize(), and updateRunPri().

◆ INT_BITS_MAX

const int GicV2::INT_BITS_MAX = 32

staticprotected

Definition at line 120 of file gic_v2.hh.

Referenced by readDistributor(), serialize(), unserialize(), updateIntState(), and writeDistributor().

◆ INT_LINES_MAX

const int GicV2::INT_LINES_MAX = 1020

staticprotected

Definition at line 121 of file gic_v2.hh.

Referenced by readDistributor().

◆ intConfig

uint32_t GicV2::intConfig[INT_BITS_MAX *2]

protected

2 bit per interrupt signaling if it's level or edge sensitive and if it is 1:N or N:N

Definition at line 324 of file gic_v2.hh.

Referenced by getIntConfig(), GicV2(), readDistributor(), serialize(), unserialize(), and writeDistributor().

◆ intEnabled

uint32_t GicV2::intEnabled[INT_BITS_MAX-1]

protected

GICD_I{S,C}ENABLER{1..31} interrupt enable bits for global interrupts 1b per interrupt, 32 bits per word, 31 words.

Definition at line 214 of file gic_v2.hh.

Referenced by GicV2(), GicV2::BankedRegs::serialize(), serialize(), GicV2::BankedRegs::unserialize(), and unserialize().

◆ intGroup

uint32_t GicV2::intGroup[INT_BITS_MAX-1]

protected

GICD_IGROUPR{1..31} interrupt group bits for global interrupts 1b per interrupt, 32 bits per word, 31 words.

Definition at line 255 of file gic_v2.hh.

Referenced by GicV2::BankedRegs::serialize(), serialize(), GicV2::BankedRegs::unserialize(), and unserialize().

◆ intLatency

const Tick GicV2::intLatency

protected

Latency for a interrupt to get to CPU.

Definition at line 162 of file gic_v2.hh.

Referenced by GicV2(), and updateIntState().

◆ intPriority

uint8_t GicV2::intPriority[GLOBAL_INT_LINES]

protected

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

Definition at line 273 of file gic_v2.hh.

Referenced by GicV2(), GicV2::BankedRegs::serialize(), serialize(), GicV2::BankedRegs::unserialize(), and unserialize().

◆ itLines

uint32_t GicV2::itLines

protected

Number of itLines enabled.

Definition at line 175 of file gic_v2.hh.

Referenced by MuxingKvmGic::copyGicState(), GicV2(), readDistributor(), serialize(), unserialize(), updateIntState(), and updateRunPri().

◆ list_type

Bitfield<25,24> GicV2::list_type

protected

Definition at line 131 of file gic_v2.hh.

◆ NN_CONFIG_MASK

const int GicV2::NN_CONFIG_MASK = 0x55555555

staticprotected

Mask for bits that config N:N mode in GICD_ICFGR's.

Definition at line 116 of file gic_v2.hh.

Referenced by writeDistributor().

◆ pendingDelayedInterrupts

int GicV2::pendingDelayedInterrupts

protected

Definition at line 438 of file gic_v2.hh.

Referenced by drain(), GicV2(), postDelayedFiq(), postDelayedInt(), postFiq(), and postInt().

◆ pendingInt

uint32_t GicV2::pendingInt[INT_BITS_MAX-1]

protected

GICD_I{S,C}PENDR{1..31} interrupt pending bits for global interrupts 1b per interrupt, 32 bits per word, 31 words.

Definition at line 227 of file gic_v2.hh.

Referenced by GicV2(), GicV2::BankedRegs::serialize(), serialize(), GicV2::BankedRegs::unserialize(), and unserialize().

◆ postFiqEvent

EventFunctionWrapper* GicV2::postFiqEvent[CPU_MAX]

protected

Definition at line 437 of file gic_v2.hh.

Referenced by GicV2(), postFiq(), and ~GicV2().

◆ postIntEvent

EventFunctionWrapper* GicV2::postIntEvent[CPU_MAX]

protected

Definition at line 436 of file gic_v2.hh.

Referenced by GicV2(), postInt(), unserialize(), and ~GicV2().

◆ PPI_MAX

const int GicV2::PPI_MAX = 16

staticprotected

Definition at line 110 of file gic_v2.hh.

Referenced by getIntPriority(), readCpu(), sendInt(), GicV2::BankedRegs::serialize(), GicV2::BankedRegs::unserialize(), updateIntState(), updateRunPri(), writeCpu(), and writeDistributor().

◆ sgi_id

GicV2::sgi_id

protected

Definition at line 129 of file gic_v2.hh.

◆ SGI_MASK

const int GicV2::SGI_MASK = 0xFFFF0000

staticprotected

Mask off SGI's when setting/clearing pending bits.

Definition at line 113 of file gic_v2.hh.

Referenced by writeDistributor().

◆ SGI_MAX

const int GicV2::SGI_MAX = 16

staticprotected

Definition at line 109 of file gic_v2.hh.

Referenced by clearPPInt(), readCpu(), sendInt(), sendPPInt(), GicV2::BankedRegs::serialize(), serialize(), GicV2::BankedRegs::unserialize(), unserialize(), updateIntState(), updateRunPri(), writeCpu(), and writeDistributor().

◆ SPURIOUS_INT

const int GicV2::SPURIOUS_INT = 1023

staticprotected

Definition at line 119 of file gic_v2.hh.

Referenced by GicV2(), readCpu(), and updateIntState().

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

dev/arm/gic_v2.hh
dev/arm/gic_v2.cc

Classes

Public Types

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Static Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Params

Member Enumeration Documentation

◆ anonymous enum

◆ anonymous enum

Constructor & Destructor Documentation

◆ GicV2()

◆ ~GicV2()

Member Function Documentation

◆ BitUnion32()

◆ clearInt() [1/2]

◆ clearInt() [2/2]

◆ clearPPInt()

◆ cpuEnabled()

◆ drain()

◆ drainResume()

◆ EndBitUnion() [1/2]

◆ EndBitUnion() [2/2]

◆ genSwiMask()

◆ getActiveInt()

◆ getAddrRanges()

◆ getBankedRegs()

◆ getCpuPriority()

◆ getCpuTarget()

◆ getIntConfig()

◆ getIntEnabled()

◆ getIntGroup()

◆ getIntPriority()

◆ getPendingInt()

◆ intNumToBit()

◆ intNumToWord()

◆ isFiq()

◆ isGroup0()

◆ isLevelSensitive()

◆ params()

◆ postDelayedFiq()

◆ postDelayedInt()

◆ postFiq()

◆ postInt()

◆ read()

◆ readCpu() [1/2]

◆ readCpu() [2/2]

◆ readDistributor() [1/3]

◆ readDistributor() [2/3]

◆ readDistributor() [3/3]

◆ sendInt()

◆ sendPPInt()

◆ serialize()

◆ softInt()

◆ supportsVersion()

◆ unserialize()

◆ updateIntState()

◆ updateRunPri()

◆ write()

◆ writeCpu() [1/2]

◆ writeCpu() [2/2]

◆ writeDistributor() [1/3]

◆ writeDistributor() [2/3]

◆ writeDistributor() [3/3]

Member Data Documentation

◆ ack_id

◆ activeInt

◆ addrRanges

◆ bankedRegs

◆ cpu_id

◆ cpu_list

◆ CPU_MAX

◆ cpuBpr

◆ cpuControl

◆ cpuHighestInt

◆ cpuPioDelay