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MuxingKvmGic Class Reference

#include <gic.hh>

Inheritance diagram for MuxingKvmGic:
Pl390 BaseGic BaseGicRegisters PioDevice MemObject ClockedObject SimObject Clocked EventManager Serializable Drainable

Public Member Functions

 MuxingKvmGic (const MuxingKvmGicParams *p)
 
 ~MuxingKvmGic ()
 
void loadState (CheckpointIn &cp) override
 loadState() is called on each SimObject when restoring from a checkpoint. More...
 
void startup () override
 startup() is the final initialization call before simulation. More...
 
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...
 
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 Pl390
const Paramsparams () const
 
 Pl390 (const Params *p)
 
DrainState drain () override
 Notify an object that it needs to drain its state. 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
 
void driveSPI (uint32_t spi)
 
void driveLegIRQ (bool state)
 
void driveLegFIQ (bool state)
 
void driveIrqEn (bool state)
 
- Public Member Functions inherited from BaseGic
 BaseGic (const Params *p)
 
virtual ~BaseGic ()
 
const Paramsparams () const
 
- Public Member Functions inherited from PioDevice
 PioDevice (const Params *p)
 
virtual ~PioDevice ()
 
const Paramsparams () const
 
virtual void init ()
 init() is called after all C++ SimObjects have been created and all ports are connected. More...
 
virtual BaseSlavePortgetSlavePort (const std::string &if_name, PortID idx=InvalidPortID)
 Get a slave port with a given name and index. More...
 
- Public Member Functions inherited from MemObject
const Paramsparams () const
 
 MemObject (const Params *params)
 
virtual BaseMasterPortgetMasterPort (const std::string &if_name, PortID idx=InvalidPortID)
 Get a master port with a given name and index. More...
 
- Public Member Functions inherited from ClockedObject
 ClockedObject (const ClockedObjectParams *p)
 
const Paramsparams () const
 
void serialize (CheckpointOut &cp) const override
 Serialize an object. More...
 
void unserialize (CheckpointIn &cp) override
 Unserialize an object. More...
 
Enums::PwrState pwrState () const
 
std::string pwrStateName () const
 
std::vector< double > pwrStateWeights () const
 Returns the percentage residency for each power state. More...
 
void computeStats ()
 Record stats values like state residency by computing the time difference from previous update. More...
 
void pwrState (Enums::PwrState)
 
void regStats () override
 Register statistics for this object. More...
 
- Public Member Functions inherited from SimObject
const Paramsparams () const
 
 SimObject (const Params *_params)
 
virtual ~SimObject ()
 
virtual const std::string name () const
 
virtual void initState ()
 initState() is called on each SimObject when not restoring from a checkpoint. More...
 
virtual void resetStats ()
 Reset statistics associated with this object. More...
 
virtual void regProbePoints ()
 Register probe points for this object. More...
 
virtual void regProbeListeners ()
 Register probe listeners for this object. More...
 
ProbeManagergetProbeManager ()
 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
 EventManager (EventManager &em)
 
 EventManager (EventManager *em)
 
 EventManager (EventQueue *eq)
 
EventQueueeventQueue () 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)
 
- 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 Clocked
void updateClockPeriod () const
 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

bool validKvmEnvironment () const
 Verify gem5 configuration will support KVM emulation. More...
 
- Protected Member Functions inherited from Pl390
 BitUnion32 (SWI) Bitfield<3
 
 EndBitUnion (SWI) BitUnion32(IAR) Bitfield<9
 
BankedRegsgetBankedRegs (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)
 
uint8_t & getIntPriority (ContextID ctx, uint32_t ix)
 
uint8_t getCpuTarget (ContextID ctx, uint32_t ix)
 
uint8_t getCpuPriority (unsigned cpu)
 
void softInt (ContextID ctx, SWI swi)
 software generated interrupt More...
 
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 postInt (uint32_t cpu, Tick when)
 Post an interrupt to a CPU with a delay. More...
 
void postDelayedInt (uint32_t cpu)
 Deliver a delayed interrupt to the target CPU. More...
 
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
 
Clockedoperator= (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...
 

Protected Attributes

Systemsystem
 System this interrupt controller belongs to. More...
 
KvmKernelGicV2kernelGic
 Kernel GIC device. More...
 
- Protected Attributes inherited from Pl390
 sgi_id
 
Bitfield< 23, 16 > cpu_list
 
Bitfield< 25, 24 > list_type
 
 ack_id
 
Bitfield< 12, 10 > cpu_id
 
EndBitUnion(IAR) 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 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...
 
bool cpuEnabled [CPU_MAX]
 CPU enabled. 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]
 
bool irqEnable
 IRQ Enable Used for debug. More...
 
PostIntEventpostIntEvent [CPU_MAX]
 
int pendingDelayedInterrupts
 
- Protected Attributes inherited from BaseGic
Platformplatform
 Platform this GIC belongs to. More...
 
- Protected Attributes inherited from PioDevice
Systemsys
 
PioPort pioPort
 The pioPort that handles the requests for us and provides us requests that it sees. More...
 
- Protected Attributes inherited from ClockedObject
Enums::PwrState _currPwrState
 To keep track of the current power state. More...
 
Tick prvEvalTick
 
Stats::Scalar numPwrStateTransitions
 
Stats::Distribution pwrStateClkGateDist
 
Stats::Vector pwrStateResidencyTicks
 
- Protected Attributes inherited from SimObject
const SimObjectParams * _params
 Cached copy of the object parameters. More...
 
- Protected Attributes inherited from EventManager
EventQueueeventq
 A pointer to this object's event queue. More...
 

Private Member Functions

void fromPl390ToKvm ()
 Multiplexing implementation. More...
 
void fromKvmToPl390 ()
 
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 Pl390
typedef Pl390Params Params
 
- Public Types inherited from BaseGic
typedef struct BaseGicParams Params
 
- Public Types inherited from PioDevice
typedef PioDeviceParams Params
 
- Public Types inherited from MemObject
typedef MemObjectParams 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 SimObjectfind (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 ()
 Get the fully-qualified name of the active section. More...
 
static void serializeAll (const std::string &cpt_dir)
 
static void unserializeGlobals (CheckpointIn &cp)
 
- Static Public Attributes inherited from Serializable
static int ckptCount = 0
 
static int ckptMaxCount = 0
 
static int ckptPrevCount = -1
 
- Protected Types inherited from Pl390
enum  {
  GICD_CTLR = 0x000, GICD_TYPER = 0x004, GICD_IIDR = 0x008, GICD_SGIR = 0xf00,
  DIST_SIZE = 0xfff
}
 
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_IIDR = 0xfc, CPU_SIZE = 0xff
}
 
- Static Protected Attributes inherited from Pl390
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 171 of file gic.hh.

Constructor & Destructor Documentation

MuxingKvmGic::MuxingKvmGic ( const MuxingKvmGicParams *  p)

Definition at line 166 of file gic.cc.

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

MuxingKvmGic::~MuxingKvmGic ( )

Definition at line 178 of file gic.cc.

Member Function Documentation

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

Definition at line 332 of file gic.cc.

References System::_numContexts, ArmISA::a, X86ISA::size(), system, and BaseGicRegisters::writeDistributor().

Referenced by copyGicState().

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

Definition at line 349 of file gic.cc.

References ArmISA::a, X86ISA::size(), and BaseGicRegisters::writeDistributor().

Referenced by copyGicState().

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
numnumber of interrupt to send

Implements BaseGic.

Definition at line 262 of file gic.cc.

References Pl390::clearInt(), KvmKernelGicV2::clearSPI(), DPRINTF, kernelGic, and usingKvm.

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

Implements BaseGic.

Definition at line 281 of file gic.cc.

References KvmKernelGicV2::clearPPI(), Pl390::clearPPInt(), DPRINTF, kernelGic, and usingKvm.

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

Definition at line 323 of file gic.cc.

References System::_numContexts, ArmISA::a, copyDistRegister(), X86ISA::size(), and system.

Referenced by copyGicState().

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

Definition at line 314 of file gic.cc.

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

Referenced by copyGicState().

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

Definition at line 341 of file gic.cc.

References ArmISA::a, copyDistRegister(), and X86ISA::size().

Referenced by copyGicState().

void MuxingKvmGic::copyDistRegister ( BaseGicRegisters from,
BaseGicRegisters to,
ContextID  ctx,
Addr  daddr 
)
private
void MuxingKvmGic::copyGicState ( BaseGicRegisters from,
BaseGicRegisters to 
)
private
DrainState MuxingKvmGic::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 198 of file gic.cc.

References Pl390::drain(), fromKvmToPl390(), and usingKvm.

void MuxingKvmGic::drainResume ( )
overridevirtual

Resume execution after a successful drain.

Reimplemented from Drainable.

Definition at line 206 of file gic.cc.

References Drainable::drainResume(), fromPl390ToKvm(), kernelGic, usingKvm, and validKvmEnvironment().

void MuxingKvmGic::fromKvmToPl390 ( )
private

Definition at line 436 of file gic.cc.

References System::_numContexts, copyGicState(), Pl390::cpuPriority, kernelGic, and system.

Referenced by drain().

void MuxingKvmGic::fromPl390ToKvm ( )
private

Multiplexing implementation.

Definition at line 430 of file gic.cc.

References copyGicState(), and kernelGic.

Referenced by drainResume(), and startup().

void MuxingKvmGic::loadState ( CheckpointIn cp)
overridevirtual

loadState() is called on each SimObject when restoring from a checkpoint.

The default implementation simply calls unserialize() if there is a corresponding section in the checkpoint. However, objects can override loadState() to get other behaviors, e.g., doing other programmed initializations after unserialize(), or complaining if no checkpoint section is found.

Parameters
cpCheckpoint to restore the state from.

Reimplemented from SimObject.

Definition at line 183 of file gic.cc.

References SimObject::loadState().

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
pktPacket describing this request
Returns
number of ticks it took to complete

Implements PioDevice.

Definition at line 234 of file gic.cc.

References panic, Pl390::read(), and usingKvm.

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
numnumber of interrupt to send

Implements BaseGic.

Definition at line 252 of file gic.cc.

References DPRINTF, kernelGic, Pl390::sendInt(), KvmKernelGicV2::setSPI(), and usingKvm.

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

Interface call for private peripheral interrupts.

Parameters
numnumber of interrupt to send
cpuCPU to forward interrupt to

Implements BaseGic.

Definition at line 272 of file gic.cc.

References DPRINTF, kernelGic, Pl390::sendPPInt(), KvmKernelGicV2::setPPI(), and usingKvm.

void MuxingKvmGic::serialize ( CheckpointOut cp) const
overridevirtual

Serialize an object.

Output an object's state into the current checkpoint section.

Parameters
cpCheckpoint state

Implements Serializable.

Definition at line 221 of file gic.cc.

References Pl390::serialize().

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 189 of file gic.cc.

References fromPl390ToKvm(), kernelGic, SimObject::startup(), usingKvm, and validKvmEnvironment().

void MuxingKvmGic::unserialize ( CheckpointIn cp)
overridevirtual

Unserialize an object.

Read an object's state from the current checkpoint section.

Parameters
cpCheckpoint state

Implements Serializable.

Definition at line 228 of file gic.cc.

References Pl390::unserialize().

bool MuxingKvmGic::validKvmEnvironment ( ) const
protected

Verify gem5 configuration will support KVM emulation.

Definition at line 291 of file gic.cc.

References system, and System::threadContexts.

Referenced by drainResume(), and startup().

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
pktPacket describing this request
Returns
number of ticks it took to complete

Implements PioDevice.

Definition at line 243 of file gic.cc.

References panic, usingKvm, and Pl390::write().

Member Data Documentation

KvmKernelGicV2* MuxingKvmGic::kernelGic
protected
System& MuxingKvmGic::system
protected

System this interrupt controller belongs to.

Definition at line 202 of file gic.hh.

Referenced by clearBankedDistRange(), copyBankedDistRange(), copyGicState(), fromKvmToPl390(), MuxingKvmGic(), and validKvmEnvironment().

bool MuxingKvmGic::usingKvm
private

Definition at line 208 of file gic.hh.

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


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

Generated on Fri Jun 9 2017 13:04:15 for gem5 by doxygen 1.8.6