#include <lds_state.hh>

Inheritance diagram for LdsState:

Classes
class	CuSidePort
	CuSidePort is the LDS Port closer to the CU side. More...

class	TickEvent
	an event to allow event-driven execution More...

Public Types
typedef LdsStateParams	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

Public Member Functions
	LdsState (const Params *params)
	the default constructor that works with SWIG More...

	LdsState (const LdsState &)=delete

	~LdsState ()

const Params *	params () const

bool	isRetryResp () const

void	setRetryResp (const bool value)

LdsState &	operator= (const LdsState &)=delete

int	increaseRefCounter (const uint32_t dispatchId, const uint32_t wgId)
	use the dynamic wave id to create or just increase the reference count More...

int	decreaseRefCounter (const uint32_t dispatchId, const uint32_t wgId)
	decrease the reference count after making sure it is in the list give back this chunk if the ref counter has reached 0 More...

int	getRefCounter (const uint32_t dispatchId, const uint32_t wgId) const
	return the current reference count for this workgroup id More...

LdsChunk *	reserveSpace (const uint32_t dispatchId, const uint32_t wgId, const uint32_t size)
	assign a parent and request this amount of space be set aside for this wgid More...

bool	returnQueuePush (std::pair< Tick, PacketPtr > thePair)
	add this to the queue of packets to be returned More...

Tick	earliestReturnTime () const

void	setParent (ComputeUnit *x_parent)
	set the parent and name based on the parent More...

ComputeUnit *	getParent () const

std::string	getName ()

int	getBanks () const

ComputeUnit *	getComputeUnit () const

int	getBankConflictPenalty () const

std::size_t	ldsSize (const uint32_t x_wgId)
	get the allocated size for this workgroup More...

AddrRange	getAddrRange () const

virtual BaseSlavePort &	getSlavePort (const std::string &if_name, PortID idx)
	Get a slave port with a given name and index. More...

bool	canReserve (uint32_t x_size) const
	can this much space be reserved for a workgroup? More...

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

	MemObject (const Params *params)

virtual BaseMasterPort &	getMasterPort (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 Params *	params () 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 Params *	params () const

	SimObject (const Params *_params)

virtual	~SimObject ()

virtual const std::string	name () const

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

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	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...

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...

Public Member Functions inherited from EventManager
	EventManager (EventManager &em)

	EventManager (EventManager *em)

	EventManager (EventQueue *eq)

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)

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	process ()
	look for packets to return at this time More...

GPUDynInstPtr	getDynInstr (PacketPtr packet)

bool	processPacket (PacketPtr packet)
	process an incoming packet, add it to the return queue More...

unsigned	countBankConflicts (PacketPtr packet, unsigned *bankAccesses)
	derive the gpu mem packet from the packet and then count the bank conflicts More...

unsigned	countBankConflicts (GPUDynInstPtr gpuDynInst, unsigned *numBankAccesses)

Protected Member Functions inherited from Drainable
	Drainable ()

virtual	~Drainable ()

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

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...

Protected Attributes
std::unordered_map< uint32_t, std::unordered_map< uint32_t, int32_t > >	refCounter

std::unordered_map< uint32_t, std::unordered_map< uint32_t, LdsChunk > >	chunkMap

TickEvent	tickEvent

std::queue< std::pair< Tick, PacketPtr > >	returnQueue

bool	retryResp = false

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
EventQueue *	eventq
	A pointer to this object's event queue. More...

Private Member Functions
bool	releaseSpace (const uint32_t x_dispatchId, const uint32_t x_wgId)
	give back the space More...

Private Attributes
CuSidePort	cuPort

ComputeUnit *	parent = nullptr

std::string	_name

int	bytesAllocated = 0

int	maximumSize

AddrRange	range

int	bankConflictPenalty = 0

int	banks = 0

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 ()
	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

Detailed Description

Definition at line 110 of file lds_state.hh.

Member Typedef Documentation

typedef LdsStateParams LdsState::Params

Definition at line 251 of file lds_state.hh.

Constructor & Destructor Documentation

LdsState::LdsState ( const Params * params )

the default constructor that works with SWIG

Definition at line 49 of file lds_state.cc.

References fatal_if().

LdsState::LdsState ( const LdsState & )

delete

LdsState::~LdsState ( )

inline

Definition at line 258 of file lds_state.hh.

References parent.

Member Function Documentation

bool LdsState::canReserve ( uint32_t x_size ) const

inline

can this much space be reserved for a workgroup?

Definition at line 453 of file lds_state.hh.

References bytesAllocated, and maximumSize.

Referenced by ComputeUnit::ReadyWorkgroup().

unsigned LdsState::countBankConflicts	(	PacketPtr	packet,
		unsigned *	bankAccesses
	)

protected

derive the gpu mem packet from the packet and then count the bank conflicts

Definition at line 96 of file lds_state.cc.

References fatal_if(), ComputeUnit::LDSPort::SenderState::getMemInst(), Packet::SenderState::predecessor, and Packet::senderState.

Referenced by processPacket().

unsigned LdsState::countBankConflicts	(	GPUDynInstPtr	gpuDynInst,
		unsigned *	numBankAccesses
	)

protected

Definition at line 115 of file lds_state.cc.

References banks, ArmISA::i, ArmISA::j, panic_if(), parent, and ComputeUnit::wfSize().

int LdsState::decreaseRefCounter	(	const uint32_t	dispatchId,
		const uint32_t	wgId
	)

inline

decrease the reference count after making sure it is in the list give back this chunk if the ref counter has reached 0

Definition at line 302 of file lds_state.hh.

References fatal_if(), getRefCounter(), refCounter, and releaseSpace().

Tick LdsState::earliestReturnTime ( ) const

inline

Definition at line 383 of file lds_state.hh.

References curTick(), and returnQueue.

Referenced by processPacket().

AddrRange LdsState::getAddrRange ( ) const

inline

Definition at line 433 of file lds_state.hh.

References range.

Referenced by LdsState::CuSidePort::getAddrRanges().

int LdsState::getBankConflictPenalty ( ) const

inline

Definition at line 418 of file lds_state.hh.

References bankConflictPenalty.

int LdsState::getBanks ( ) const

inline

Definition at line 406 of file lds_state.hh.

References banks.

ComputeUnit* LdsState::getComputeUnit ( ) const

inline

Definition at line 412 of file lds_state.hh.

References parent.

GPUDynInstPtr LdsState::getDynInstr ( PacketPtr packet )

protected

Definition at line 185 of file lds_state.cc.

References ComputeUnit::LDSPort::SenderState::getMemInst(), Packet::senderState, and ArmISA::ss.

Referenced by processPacket().

std::string LdsState::getName ( )

inline

Definition at line 400 of file lds_state.hh.

References _name.

ComputeUnit* LdsState::getParent ( ) const

inline

Definition at line 394 of file lds_state.hh.

References parent.

int LdsState::getRefCounter	(	const uint32_t	dispatchId,
		const uint32_t	wgId
	)		const

inline

return the current reference count for this workgroup id

Definition at line 324 of file lds_state.hh.

References chunkMap, fatal, fatal_if(), and refCounter.

Referenced by decreaseRefCounter(), ComputeUnit::getRefCounter(), and increaseRefCounter().

virtual BaseSlavePort& LdsState::getSlavePort	(	const std::string &	if_name,
		PortID	idx
	)

inlinevirtual

Get a slave port with a given name and index.

This is used at binding time and returns a reference to a protocol-agnostic base master port.

Parameters

if_name	Port name
idx	Index in the case of a VectorPort

Returns: A reference to the given port

Reimplemented from MemObject.

Definition at line 439 of file lds_state.hh.

References cuPort, and fatal.

int LdsState::increaseRefCounter	(	const uint32_t	dispatchId,
		const uint32_t	wgId
	)

inline

use the dynamic wave id to create or just increase the reference count

Definition at line 289 of file lds_state.hh.

References fatal_if(), getRefCounter(), and refCounter.

Referenced by ComputeUnit::startWavefront().

bool LdsState::isRetryResp ( ) const

inline

Definition at line 270 of file lds_state.hh.

References retryResp.

std::size_t LdsState::ldsSize ( const uint32_t x_wgId )

inline

get the allocated size for this workgroup

Definition at line 427 of file lds_state.hh.

References chunkMap.

LdsState& LdsState::operator= ( const LdsState & )

delete

const Params* LdsState::params ( ) const

inline

Definition at line 264 of file lds_state.hh.

References SimObject::_params.

bool LdsState::process ( )

protected

look for packets to return at this time

Definition at line 276 of file lds_state.cc.

References Clocked::clockEdge(), cuPort, LdsState::TickEvent::deschedule(), ComputeUnit::LDSPort::SenderState::getMemInst(), Packet::makeTimingResponse(), panic, retryResp, returnQueue, LdsState::TickEvent::schedule(), Event::scheduled(), Packet::senderState, SlavePort::sendTimingResp(), ArmISA::ss, tickEvent, and Event::when().

Referenced by returnQueuePush().

bool LdsState::processPacket ( PacketPtr packet )

protected

process an incoming packet, add it to the return queue

Definition at line 197 of file lds_state.cc.

References bankConflictPenalty, countBankConflicts(), earliestReturnTime(), getDynInstr(), ComputeUnit::ldsBankAccesses, ComputeUnit::ldsBankConflictDist, ComputeUnit::loadBusLength(), parent, returnQueuePush(), Stats::DistBase< Derived, Stor >::sample(), ComputeUnit::shader, ComputeUnit::storeBusLength(), and Shader::ticks().

Referenced by LdsState::CuSidePort::recvTimingReq().

bool LdsState::releaseSpace	(	const uint32_t	x_dispatchId,
		const uint32_t	x_wgId
	)

inlineprivate

give back the space

Definition at line 463 of file lds_state.hh.

References bytesAllocated, chunkMap, fatal, fatal_if(), SimObject::find(), and X86ISA::size().

Referenced by decreaseRefCounter().

LdsChunk* LdsState::reserveSpace	(	const uint32_t	dispatchId,
		const uint32_t	wgId,
		const uint32_t	size
	)

inline

assign a parent and request this amount of space be set aside for this wgid

Definition at line 357 of file lds_state.hh.

References bytesAllocated, chunkMap, fatal_if(), SimObject::find(), maximumSize, refCounter, and X86ISA::size().

Referenced by ComputeUnit::StartWorkgroup().

bool LdsState::returnQueuePush ( std::pair< Tick, PacketPtr > thePair )

add this to the queue of packets to be returned

Definition at line 228 of file lds_state.cc.

References process(), returnQueue, Event::scheduled(), and tickEvent.

Referenced by processPacket().

void LdsState::setParent ( ComputeUnit * x_parent )

set the parent and name based on the parent

Definition at line 81 of file lds_state.cc.

References _name, fatal_if(), SimObject::name(), and parent.

Referenced by ComputeUnit::ComputeUnit().

void LdsState::setRetryResp ( const bool value )

inline

Definition at line 276 of file lds_state.hh.

References retryResp.

Member Data Documentation

std::string LdsState::_name

private

Definition at line 490 of file lds_state.hh.

Referenced by getName(), and setParent().

int LdsState::bankConflictPenalty = 0

private

Definition at line 502 of file lds_state.hh.

Referenced by getBankConflictPenalty(), and processPacket().

int LdsState::banks = 0

private

Definition at line 505 of file lds_state.hh.

Referenced by countBankConflicts(), and getBanks().

int LdsState::bytesAllocated = 0

private

Definition at line 493 of file lds_state.hh.

Referenced by canReserve(), releaseSpace(), and reserveSpace().

std::unordered_map<uint32_t, std::unordered_map<uint32_t, LdsChunk> > LdsState::chunkMap

protected

Definition at line 221 of file lds_state.hh.

Referenced by getRefCounter(), ldsSize(), releaseSpace(), and reserveSpace().

CuSidePort LdsState::cuPort

private

Definition at line 486 of file lds_state.hh.

Referenced by getSlavePort(), and process().

int LdsState::maximumSize

private

Definition at line 496 of file lds_state.hh.

Referenced by canReserve(), and reserveSpace().

ComputeUnit* LdsState::parent = nullptr

private

Definition at line 488 of file lds_state.hh.

Referenced by countBankConflicts(), getComputeUnit(), getParent(), processPacket(), setParent(), and ~LdsState().

AddrRange LdsState::range

private

Definition at line 499 of file lds_state.hh.

Referenced by getAddrRange().

std::unordered_map<uint32_t, std::unordered_map<uint32_t, int32_t> > LdsState::refCounter

protected

Definition at line 217 of file lds_state.hh.

Referenced by decreaseRefCounter(), getRefCounter(), increaseRefCounter(), and reserveSpace().

bool LdsState::retryResp = false

protected

Definition at line 232 of file lds_state.hh.

Referenced by isRetryResp(), process(), and setRetryResp().

std::queue<std::pair<Tick, PacketPtr> > LdsState::returnQueue

protected

Definition at line 229 of file lds_state.hh.

Referenced by earliestReturnTime(), process(), and returnQueuePush().

TickEvent LdsState::tickEvent

protected

Definition at line 224 of file lds_state.hh.

Referenced by process(), and returnQueuePush().

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

gpu-compute/lds_state.hh
gpu-compute/lds_state.cc

Classes

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation