#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 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

Port &	getPort (const std::string &if_name, PortID idx)
	Get a 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 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)

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	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 Stats::Group
	Group ()=delete

	Group (const Group &)=delete

Group &	operator= (const Group &)=delete

	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...

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

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

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

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

uint64_t	frequency () const

Tick	clockPeriod () const

double	voltage () const

Cycles	ticksToCycles (Tick t) const

Tick	cyclesToTicks (Cycles c) const

Protected Member Functions
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...

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
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

ClockedObject::ClockedObjectStats	stats

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 111 of file lds_state.hh.

Member Typedef Documentation

◆ Params

typedef LdsStateParams LdsState::Params

Definition at line 252 of file lds_state.hh.

Constructor & Destructor Documentation

◆ LdsState() [1/2]

LdsState::LdsState ( const Params * params )

the default constructor that works with SWIG

Definition at line 50 of file lds_state.cc.

References fatal_if.

◆ LdsState() [2/2]

LdsState::LdsState ( const LdsState & )

delete

◆ ~LdsState()

LdsState::~LdsState ( )

inline

Definition at line 259 of file lds_state.hh.

Member Function Documentation

◆ canReserve()

bool LdsState::canReserve ( uint32_t x_size ) const

inline

can this much space be reserved for a workgroup?

Definition at line 454 of file lds_state.hh.

Referenced by ComputeUnit::ReadyWorkgroup().

◆ countBankConflicts() [1/2]

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 97 of file lds_state.cc.

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

Referenced by processPacket().

◆ countBankConflicts() [2/2]

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

protected

Definition at line 116 of file lds_state.cc.

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

◆ decreaseRefCounter()

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 303 of file lds_state.hh.

References fatal_if.

◆ earliestReturnTime()

Tick LdsState::earliestReturnTime ( ) const

inline

Definition at line 384 of file lds_state.hh.

References curTick().

Referenced by processPacket().

◆ getAddrRange()

AddrRange LdsState::getAddrRange ( ) const

inline

Definition at line 434 of file lds_state.hh.

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

◆ getBankConflictPenalty()

int LdsState::getBankConflictPenalty ( ) const

inline

Definition at line 419 of file lds_state.hh.

◆ getBanks()

int LdsState::getBanks ( ) const

inline

Definition at line 407 of file lds_state.hh.

◆ getComputeUnit()

ComputeUnit* LdsState::getComputeUnit ( ) const

inline

Definition at line 413 of file lds_state.hh.

◆ getDynInstr()

GPUDynInstPtr LdsState::getDynInstr ( PacketPtr packet )

protected

Definition at line 186 of file lds_state.cc.

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

Referenced by processPacket().

◆ getName()

std::string LdsState::getName ( )

inline

Definition at line 401 of file lds_state.hh.

◆ getParent()

ComputeUnit* LdsState::getParent ( ) const

inline

Definition at line 395 of file lds_state.hh.

◆ getPort()

Port& LdsState::getPort	(	const std::string &	if_name,
		PortID	idx
	)

inlinevirtual

Get a port with a given name and index.

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

Parameters

if_name	Port name
idx	Index in the case of a VectorPort

Returns: A reference to the given port

Reimplemented from SimObject.

Definition at line 440 of file lds_state.hh.

References fatal.

◆ getRefCounter()

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 325 of file lds_state.hh.

References fatal, and fatal_if.

Referenced by ComputeUnit::getRefCounter().

◆ increaseRefCounter()

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 290 of file lds_state.hh.

References fatal_if.

Referenced by ComputeUnit::startWavefront().

◆ isRetryResp()

bool LdsState::isRetryResp ( ) const

inline

Definition at line 271 of file lds_state.hh.

◆ ldsSize()

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

inline

get the allocated size for this workgroup

Definition at line 428 of file lds_state.hh.

◆ operator=()

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

delete

◆ params()

const Params* LdsState::params ( ) const

inline

Definition at line 265 of file lds_state.hh.

◆ process()

bool LdsState::process ( )

protected

look for packets to return at this time

Definition at line 277 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().

◆ processPacket()

bool LdsState::processPacket ( PacketPtr packet )

protected

process an incoming packet, add it to the return queue

Definition at line 198 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().

◆ releaseSpace()

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

inlineprivate

give back the space

Definition at line 464 of file lds_state.hh.

References fatal, fatal_if, and LdsChunk::size().

◆ reserveSpace()

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 358 of file lds_state.hh.

References fatal_if, LdsChunk::LdsChunk(), and LdsChunk::size().

Referenced by ComputeUnit::StartWorkgroup().

◆ returnQueuePush()

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

add this to the queue of packets to be returned

Definition at line 229 of file lds_state.cc.

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

Referenced by processPacket().

◆ setParent()

void LdsState::setParent ( ComputeUnit * x_parent )

set the parent and name based on the parent

Definition at line 82 of file lds_state.cc.

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

Referenced by ComputeUnit::ComputeUnit().

◆ setRetryResp()

void LdsState::setRetryResp ( const bool value )

inline

Definition at line 277 of file lds_state.hh.

Member Data Documentation

◆ _name

std::string LdsState::_name

private

Definition at line 491 of file lds_state.hh.

Referenced by setParent().

◆ bankConflictPenalty

int LdsState::bankConflictPenalty = 0

private

Definition at line 503 of file lds_state.hh.

Referenced by processPacket().

◆ banks

int LdsState::banks = 0

private

Definition at line 506 of file lds_state.hh.

Referenced by countBankConflicts().

◆ bytesAllocated

int LdsState::bytesAllocated = 0

private

Definition at line 494 of file lds_state.hh.

◆ chunkMap

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

protected

Definition at line 222 of file lds_state.hh.

◆ cuPort

CuSidePort LdsState::cuPort

private

Definition at line 487 of file lds_state.hh.

Referenced by process().

◆ maximumSize

int LdsState::maximumSize

private

Definition at line 497 of file lds_state.hh.

◆ parent

ComputeUnit* LdsState::parent = nullptr

private

Definition at line 489 of file lds_state.hh.

Referenced by countBankConflicts(), processPacket(), and setParent().

◆ range

AddrRange LdsState::range

private

Definition at line 500 of file lds_state.hh.

◆ refCounter

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

protected

Definition at line 218 of file lds_state.hh.

◆ retryResp

bool LdsState::retryResp = false

protected

Definition at line 233 of file lds_state.hh.

Referenced by process().

◆ returnQueue

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

protected

Definition at line 230 of file lds_state.hh.

Referenced by process(), and returnQueuePush().

◆ tickEvent

TickEvent LdsState::tickEvent

protected

Definition at line 225 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

◆ Params

Constructor & Destructor Documentation

◆ LdsState() [1/2]

◆ LdsState() [2/2]

◆ ~LdsState()

Member Function Documentation

◆ canReserve()

◆ countBankConflicts() [1/2]

◆ countBankConflicts() [2/2]

◆ decreaseRefCounter()

◆ earliestReturnTime()

◆ getAddrRange()

◆ getBankConflictPenalty()

◆ getBanks()

◆ getComputeUnit()

◆ getDynInstr()

◆ getName()

◆ getParent()

◆ getPort()

◆ getRefCounter()

◆ increaseRefCounter()

◆ isRetryResp()

◆ ldsSize()

◆ operator=()

◆ params()

◆ process()

◆ processPacket()

◆ releaseSpace()

◆ reserveSpace()

◆ returnQueuePush()

◆ setParent()

◆ setRetryResp()

Member Data Documentation

◆ _name

◆ bankConflictPenalty

◆ banks

◆ bytesAllocated

◆ chunkMap

◆ cuPort

◆ maximumSize

◆ parent

◆ range

◆ refCounter

◆ retryResp

◆ returnQueue

◆ tickEvent