#include <interrupt_handler.hh>

Inheritance diagram for gem5::AMDGPUInterruptHandler:

Classes
class	DmaEvent

struct	SenderState

Public Member Functions
	AMDGPUInterruptHandler (const AMDGPUInterruptHandlerParams &p)

Tick	write (PacketPtr pkt) override
	Pure virtual function that the device must implement.

Tick	read (PacketPtr pkt) override
	Pure virtual function that the device must implement.

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

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

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

void	setGPUDevice (AMDGPUDevice *gpu_device)

void	prepareInterruptCookie (ContextID cntxtId, uint32_t ring_id, uint32_t client_id, uint32_t source_id, unsigned node_id)

void	submitInterruptCookie ()

void	submitWritePointer ()

void	intrPost ()

void	writeMMIO (PacketPtr pkt, Addr mmio_offset)
	Methods for setting the values of interrupt handler MMIO registers.

uint32_t	getDoorbellOffset () const

void	setCntl (const uint32_t &data)

void	setBase (const uint32_t &data)

void	setBaseHi (const uint32_t &data)

void	setRptr (const uint32_t &data)

void	setWptr (const uint32_t &data)

void	setWptrAddrLo (const uint32_t &data)

void	setWptrAddrHi (const uint32_t &data)

void	setDoorbellOffset (const uint32_t &data)

void	updateRptr (const uint32_t &data)

Public Member Functions inherited from gem5::DmaDevice
	DmaDevice (const Params &p)

virtual	~DmaDevice ()=default

void	dmaWrite (Addr addr, int size, Event event, uint8_t data, uint32_t sid, uint32_t ssid, Tick delay=0)

void	dmaWrite (Addr addr, int size, Event event, uint8_t data, Tick delay=0)

void	dmaRead (Addr addr, int size, Event event, uint8_t data, uint32_t sid, uint32_t ssid, Tick delay=0)

void	dmaRead (Addr addr, int size, Event event, uint8_t data, Tick delay=0)

bool	dmaPending () const

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

Addr	cacheBlockSize () const

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

Public Member Functions inherited from gem5::PioDevice
	PioDevice (const Params &p)

virtual	~PioDevice ()

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

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

Public Member Functions inherited from gem5::ClockedObject
	ClockedObject (const ClockedObjectParams &p)

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

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

Public Member Functions inherited from gem5::SimObject
const Params &	params () const

	SimObject (const Params &p)

virtual	~SimObject ()

virtual void	loadState (CheckpointIn &cp)
	loadState() is called on each SimObject when restoring from a checkpoint.

virtual void	initState ()
	initState() is called on each SimObject when not restoring from a checkpoint.

virtual void	regProbePoints ()
	Register probe points for this object.

virtual void	regProbeListeners ()
	Register probe listeners for this object.

ProbeManager *	getProbeManager ()
	Get the probe manager for this object.

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

DrainState	drain () override
	Provide a default implementation of the drain interface for objects that don't need draining.

virtual void	memWriteback ()
	Write back dirty buffers to memory using functional writes.

virtual void	memInvalidate ()
	Invalidate the contents of memory buffers.

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

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

Public Member Functions inherited from gem5::EventManager
EventQueue *	eventQueue () const

void	schedule (Event &event, Tick when)

void	deschedule (Event &event)

void	reschedule (Event &event, Tick when, bool always=false)

void	schedule (Event *event, Tick when)

void	deschedule (Event *event)

void	reschedule (Event *event, Tick when, bool always=false)

void	wakeupEventQueue (Tick when=(Tick) -1)
	This function is not needed by the usual gem5 event loop but may be necessary in derived EventQueues which host gem5 on other schedulers.

void	setCurTick (Tick newVal)

	EventManager (EventManager &em)
	Event manger manages events in the event queue.

	EventManager (EventManager *em)

	EventManager (EventQueue *eq)

Public Member Functions inherited from gem5::Serializable
	Serializable ()

virtual	~Serializable ()

void	serializeSection (CheckpointOut &cp, const char *name) const
	Serialize an object into a new section.

void	serializeSection (CheckpointOut &cp, const std::string &name) const

void	unserializeSection (CheckpointIn &cp, const char *name)
	Unserialize an a child object.

void	unserializeSection (CheckpointIn &cp, const std::string &name)

Public Member Functions inherited from gem5::Drainable
DrainState	drainState () const
	Return the current drain state of an object.

virtual void	notifyFork ()
	Notify a child process of a fork.

Public Member Functions inherited from gem5::statistics::Group
	Group (Group parent, const char name=nullptr)
	Construct a new statistics group.

virtual	~Group ()

virtual void	regStats ()
	Callback to set stat parameters.

virtual void	resetStats ()
	Callback to reset stats.

virtual void	preDumpStats ()
	Callback before stats are dumped.

void	addStat (statistics::Info *info)
	Register a stat with this group.

const std::map< std::string, Group * > &	getStatGroups () const
	Get all child groups associated with this object.

const std::vector< Info * > &	getStats () const
	Get all stats associated with this object.

void	addStatGroup (const char name, Group block)
	Add a stat block as a child of this block.

const Info *	resolveStat (std::string name) const
	Resolve a stat by its name within this group.

void	mergeStatGroup (Group *block)
	Merge the contents (stats & children) of a block to this block.

	Group ()=delete

	Group (const Group &)=delete

Group &	operator= (const Group &)=delete

Public Member Functions inherited from gem5::Named
	Named (const std::string &name_)

virtual	~Named ()=default

virtual std::string	name () const

Public Member Functions inherited from gem5::Clocked
void	updateClockPeriod ()
	Update the tick to the current tick.

Tick	clockEdge (Cycles cycles=Cycles(0)) const
	Determine the tick when a cycle begins, by default the current one, but the argument also enables the caller to determine a future cycle.

Cycles	curCycle () const
	Determine the current cycle, corresponding to a tick aligned to a clock edge.

Tick	nextCycle () const
	Based on the clock of the object, determine the start tick of the first cycle that is at least one cycle in the future.

uint64_t	frequency () const

Tick	clockPeriod () const

double	voltage () const

Cycles	ticksToCycles (Tick t) const

Tick	cyclesToTicks (Cycles c) const

Private Attributes
AMDGPUDevice *	gpuDevice

AMDGPUIHRegs	regs

std::queue< AMDGPUInterruptCookie * >	interruptQueue

AMDGPUInterruptHandler::DmaEvent *	dmaEvent

Additional Inherited Members
Public Types inherited from gem5::DmaDevice
typedef DmaDeviceParams	Params

Public Types inherited from gem5::PioDevice
using	Params = PioDeviceParams

Public Types inherited from gem5::ClockedObject
using	Params = ClockedObjectParams
	Parameters of ClockedObject.

Public Types inherited from gem5::SimObject
typedef SimObjectParams	Params

Static Public Member Functions inherited from gem5::SimObject
static void	serializeAll (const std::string &cpt_dir)
	Create a checkpoint by serializing all SimObjects in the system.

static SimObject *	find (const char *name)
	Find the SimObject with the given name and return a pointer to it.

static void	setSimObjectResolver (SimObjectResolver *resolver)
	There is a single object name resolver, and it is only set when simulation is restoring from checkpoints.

static SimObjectResolver *	getSimObjectResolver ()
	There is a single object name resolver, and it is only set when simulation is restoring from checkpoints.

Static Public Member Functions inherited from gem5::Serializable
static const std::string &	currentSection ()
	Gets the fully-qualified name of the active section.

static void	generateCheckpointOut (const std::string &cpt_dir, std::ofstream &outstream)
	Generate a checkpoint file so that the serialization can be routed to it.

Public Attributes inherited from gem5::ClockedObject
PowerState *	powerState

Protected Member Functions inherited from gem5::Drainable
	Drainable ()

virtual	~Drainable ()

virtual void	drainResume ()
	Resume execution after a successful drain.

void	signalDrainDone () const
	Signal that an object is drained.

Protected Member Functions inherited from gem5::Clocked
	Clocked (ClockDomain &clk_domain)
	Create a clocked object and set the clock domain based on the parameters.

	Clocked (Clocked &)=delete

Clocked &	operator= (Clocked &)=delete

virtual	~Clocked ()
	Virtual destructor due to inheritance.

void	resetClock () const
	Reset the object's clock using the current global tick value.

virtual void	clockPeriodUpdated ()
	A hook subclasses can implement so they can do any extra work that's needed when the clock rate is changed.

Protected Attributes inherited from gem5::DmaDevice
DmaPort	dmaPort

Protected Attributes inherited from gem5::PioDevice
System *	sys

PioPort< PioDevice >	pioPort
	The pioPort that handles the requests for us and provides us requests that it sees.

Protected Attributes inherited from gem5::SimObject
const SimObjectParams &	_params
	Cached copy of the object parameters.

Protected Attributes inherited from gem5::EventManager
EventQueue *	eventq
	A pointer to this object's event queue.

Detailed Description

Definition at line 131 of file interrupt_handler.hh.

Constructor & Destructor Documentation

◆ AMDGPUInterruptHandler()

gem5::AMDGPUInterruptHandler::AMDGPUInterruptHandler ( const AMDGPUInterruptHandlerParams & p )

Definition at line 53 of file interrupt_handler.cc.

References regs.

Member Function Documentation

◆ getAddrRanges()

AddrRangeList gem5::AMDGPUInterruptHandler::getAddrRanges ( ) const

overridevirtual

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 gem5::PioDevice.

Definition at line 61 of file interrupt_handler.cc.

◆ getDoorbellOffset()

uint32_t gem5::AMDGPUInterruptHandler::getDoorbellOffset ( ) const

inline

Definition at line 187 of file interrupt_handler.hh.

References gem5::AMDGPUIHRegs::IH_Doorbell, and regs.

Referenced by writeMMIO().

◆ intrPost()

void gem5::AMDGPUInterruptHandler::intrPost ( )

Definition at line 68 of file interrupt_handler.cc.

References gpuDevice, and gem5::AMDGPUDevice::intrPost().

Referenced by gem5::AMDGPUInterruptHandler::DmaEvent::process().

◆ prepareInterruptCookie()

void gem5::AMDGPUInterruptHandler::prepareInterruptCookie	(	ContextID	cntxtId,
		uint32_t	ring_id,
		uint32_t	client_id,
		uint32_t	source_id,
		unsigned	node_id )

Setup the fields in the interrupt cookie (see header file for more detail on the fields). The timestamp here is a bogus value. It seems the driver does not really care what this value is. Additionally the model does not currently have anything to keep track of time. It is possible that tick/cycle count can be used in the future if this ends up being important. The remaining fields are passed from whichever block is sending the interrupt.

Definition at line 75 of file interrupt_handler.cc.

References gem5::AMDGPUInterruptCookie::clientId, gem5::CP_EOP, interruptQueue, gem5::AMDGPUInterruptCookie::nodeId, gem5::AMDGPUInterruptCookie::pasid, gem5::AMDGPUInterruptCookie::ringId, gem5::SOC15_IH_CLIENTID_GRBM_CP, gem5::SOC15_IH_CLIENTID_RLC, gem5::SOC15_IH_CLIENTID_SDMA0, gem5::SOC15_IH_CLIENTID_SDMA1, gem5::SOC15_IH_CLIENTID_SDMA2, gem5::SOC15_IH_CLIENTID_SDMA3, gem5::SOC15_IH_CLIENTID_SDMA4, gem5::SOC15_IH_CLIENTID_SDMA5, gem5::SOC15_IH_CLIENTID_SDMA6, gem5::SOC15_IH_CLIENTID_SDMA7, gem5::AMDGPUInterruptCookie::source_data_dw1, gem5::AMDGPUInterruptCookie::sourceId, gem5::AMDGPUInterruptCookie::timestamp_Lo, and gem5::TRAP_ID.