Communication interface between Schedule and Execute stages. More...

#include <comm.hh>

Inheritance diagram for gem5::ScheduleToExecute:

Public Member Functions
	ScheduleToExecute ()=delete

	ScheduleToExecute (const ComputeUnitParams &p)
	Schedule/Execute stage interface.

void	reset () override
	Reset the pipe stage interface.

GPUDynInstPtr &	readyInst (int func_unit_id)

void	dispatchTransition (const GPUDynInstPtr &gpu_dyn_inst, int func_unit_id, DISPATCH_STATUS disp_status)
	Once the scheduler has chosen a winning WF for execution, and after the WF's oldest instruction's operands have been read, this method is used to mark the instruction as ready to execute.

void	dispatchTransition (int func_unit_id, DISPATCH_STATUS disp_status)

DISPATCH_STATUS	dispatchStatus (int func_unit_id) const

Private Attributes
std::vector< GPUDynInstPtr >	_readyInsts

std::vector< DISPATCH_STATUS >	_dispatchStatus

Detailed Description

Communication interface between Schedule and Execute stages.

Definition at line 98 of file comm.hh.

Constructor & Destructor Documentation

◆ ScheduleToExecute() [1/2]

gem5::ScheduleToExecute::ScheduleToExecute ( )

delete

◆ ScheduleToExecute() [2/2]

gem5::ScheduleToExecute::ScheduleToExecute ( const ComputeUnitParams & p )

Schedule/Execute stage interface.

Definition at line 105 of file comm.cc.

References _dispatchStatus, _readyInsts, gem5::EMPTY, and gem5::MipsISA::p.

Member Function Documentation

◆ dispatchStatus()

DISPATCH_STATUS gem5::ScheduleToExecute::dispatchStatus ( int func_unit_id ) const

Definition at line 150 of file comm.cc.

References _dispatchStatus.

Referenced by gem5::ScheduleStage::arbitrateVrfToLdsBus(), gem5::ExecStage::dumpDispList(), gem5::ExecStage::exec(), gem5::ScheduleStage::fillDispatchList(), gem5::ScheduleStage::reserveResources(), and gem5::ScheduleStage::scheduleRfDestOperands().

◆ dispatchTransition() [1/2]

void gem5::ScheduleToExecute::dispatchTransition	(	const GPUDynInstPtr &	gpu_dyn_inst,
		int	func_unit_id,
		DISPATCH_STATUS	disp_status )

Once the scheduler has chosen a winning WF for execution, and after the WF's oldest instruction's operands have been read, this method is used to mark the instruction as ready to execute.

This puts it on the dispatch list to be consumed by the execute stage.

Definition at line 133 of file comm.cc.

References _dispatchStatus, and _readyInsts.

Referenced by gem5::ScheduleStage::doDispatchListTransition(), gem5::ScheduleStage::doDispatchListTransition(), and gem5::ExecStage::exec().

◆ dispatchTransition() [2/2]

void gem5::ScheduleToExecute::dispatchTransition	(	int	func_unit_id,
		DISPATCH_STATUS	disp_status )

Definition at line 142 of file comm.cc.

References _dispatchStatus, and _readyInsts.

◆ readyInst()

GPUDynInstPtr & gem5::ScheduleToExecute::readyInst ( int func_unit_id )

Definition at line 127 of file comm.cc.

References _readyInsts.

Referenced by gem5::ScheduleStage::arbitrateVrfToLdsBus(), gem5::ExecStage::dumpDispList(), gem5::ExecStage::exec(), gem5::ScheduleStage::reserveResources(), and gem5::ScheduleStage::scheduleRfDestOperands().

◆ reset()

void gem5::ScheduleToExecute::reset ( )

overridevirtual

Reset the pipe stage interface.

This is called to remove any stale state from the pipe stage that is leftover from the prior cycle. This is needed when stages do not actually consume the information passed via the stage interfaces.

Implements gem5::PipeStageIFace.

Definition at line 115 of file comm.cc.

References _dispatchStatus, _readyInsts, and gem5::EMPTY.

Referenced by gem5::ScheduleStage::exec().