#include <lsq.hh>

Inheritance diagram for gem5::minor::LSQ::SplitDataRequest:

Public Member Functions
	SplitDataRequest (LSQ &port_, MinorDynInstPtr inst_, bool isLoad_, PacketDataPtr data_=NULL, uint64_t *res_=NULL)

	~SplitDataRequest ()

void	makeFragmentRequests ()
	Make all the Requests for this transfer's fragments so that those requests can be sent for address translation.

void	makeFragmentPackets ()
	Make the packets to go with the requests so they can be sent to the memory system.

void	startAddrTranslation ()
	Start a loop of do { sendNextFragmentToTranslation ; translateTiming ; finish } while (numTranslatedFragments != numFragments) to complete all this requests' fragments' address translations.

PacketPtr	getHeadPacket ()
	Get the head packet as counted by numIssuedFragments.

void	stepToNextPacket ()
	Step on numIssuedFragments.

bool	hasPacketsInMemSystem ()
	True if this request has any issued packets in the memory system and so can't be interrupted until it gets responses.

bool	sentAllPackets ()
	Have we stepped past the end of fragmentPackets?

void	retireResponse (PacketPtr packet_)
	For loads, paste the response data into the main response packet.

void	sendNextFragmentToTranslation ()
	Part of the address translation loop, see startAddTranslation.

Public Member Functions inherited from gem5::minor::LSQ::LSQRequest
	LSQRequest (LSQ &port_, MinorDynInstPtr inst_, bool isLoad_, PacketDataPtr data_=NULL, uint64_t *res_=NULL)

virtual	~LSQRequest ()

void	makePacket ()
	Make a packet to use with the memory transaction.

bool	skippedMemAccess ()
	Was no memory access attempted for this request?

void	setSkipped ()
	Set this request as having been skipped before a memory transfer was attempt.

AddrRangeCoverage	containsAddrRangeOf (LSQRequest *other_request)
	Does this request's address range fully cover the range of other_request?

virtual void	startAddrTranslation ()=0
	Start the address translation process for this request.

virtual PacketPtr	getHeadPacket ()=0
	Get the next packet to issue for this request.

virtual void	stepToNextPacket ()=0
	Step to the next packet for the next call to getHeadPacket.

virtual bool	sentAllPackets ()=0
	Have all packets been sent?

virtual bool	hasPacketsInMemSystem ()=0
	True if this request has any issued packets in the memory system and so can't be interrupted until it gets responses.

virtual void	retireResponse (PacketPtr packet_)=0
	Retire a response packet into the LSQRequest packet possibly completing this transfer.

virtual bool	isBarrier ()
	Is this a request a barrier?

bool	needsToBeSentToStoreBuffer ()
	This request, once processed by the requests/transfers queues, will need to go to the store buffer.

void	setState (LSQRequestState new_state)
	Set state and output trace output.

bool	isComplete () const
	Has this request been completed.

void	reportData (std::ostream &os) const
	MinorTrace report interface.

Public Member Functions inherited from gem5::BaseMMU::Translation
virtual	~Translation ()

virtual void	markDelayed ()=0
	Signal that the translation has been delayed due to a hw page table walk.

virtual void	finish (const Fault &fault, const RequestPtr &req, ThreadContext *tc, BaseMMU::Mode mode)=0

virtual bool	squashed () const
	This function is used by the page table walker to determine if it should translate the a pending request or if the underlying request has been squashed.

Public Member Functions inherited from gem5::Packet::SenderState
	SenderState ()

virtual	~SenderState ()

Protected Member Functions
void	finish (const Fault &fault_, const RequestPtr &request_, ThreadContext *tc, BaseMMU::Mode mode)
	TLB response interface.

Protected Member Functions inherited from gem5::minor::LSQ::LSQRequest
void	markDelayed ()
	BaseMMU::Translation interface.

void	tryToSuppressFault ()
	Instructions may want to suppress translation faults (e.g.

void	disableMemAccess ()

void	completeDisabledMemAccess ()

Protected Attributes
EventFunctionWrapper	translationEvent
	Event to step between translations.

unsigned int	numFragments
	Number of fragments this request is split into.

unsigned int	numInTranslationFragments
	Number of fragments in the address translation mechanism.

unsigned int	numTranslatedFragments
	Number of fragments that have completed address translation, (numTranslatedFragments + numInTranslationFragments) <= numFragments.

unsigned int	numIssuedFragments
	Number of fragments already issued (<= numFragments)

unsigned int	numRetiredFragments
	Number of fragments retired back to this request.

std::vector< RequestPtr >	fragmentRequests
	Fragment Requests corresponding to the address ranges of each fragment.

std::vector< Packet * >	fragmentPackets
	Packets matching fragmentRequests to issue fragments to memory.

Additional Inherited Members
Public Types inherited from gem5::minor::LSQ::LSQRequest
enum	LSQRequestState { NotIssued , InTranslation , Translated , Failed , RequestIssuing , StoreToStoreBuffer , RequestNeedsRetry , StoreInStoreBuffer , StoreBufferIssuing , StoreBufferNeedsRetry , Complete }

Static Public Member Functions inherited from gem5::minor::LSQ::LSQRequest
static AddrRangeCoverage	containsAddrRangeOf (Addr req1_addr, unsigned int req1_size, Addr req2_addr, unsigned int req2_size)
	Does address range req1 (req1_addr to req1_addr + req1_size - 1) fully cover, partially cover or not cover at all the range req2.

Public Attributes inherited from gem5::minor::LSQ::LSQRequest
LSQ &	port
	Owning port.

MinorDynInstPtr	inst
	Instruction which made this request.

bool	isLoad
	Load/store indication used for building packet.

PacketDataPtr	data
	Dynamically allocated and populated data carried for building write packets.

PacketPtr	packet

RequestPtr	request
	The underlying request of this LSQRequest.

uint64_t *	res
	Res from pushRequest.

bool	skipped
	Was skipped.

bool	issuedToMemory
	This in an access other than a normal cacheable load that's visited the memory system.

bool	isTranslationDelayed
	Address translation is delayed due to table walk.

LSQRequestState	state

Public Attributes inherited from gem5::Packet::SenderState
SenderState *	predecessor

Detailed Description

Definition at line 389 of file lsq.hh.

Constructor & Destructor Documentation

◆ SplitDataRequest()

gem5::minor::LSQ::SplitDataRequest::SplitDataRequest	(	LSQ &	port_,
		MinorDynInstPtr	inst_,
		bool	isLoad_,
		PacketDataPtr	data_ = `NULL`,
		uint64_t *	res_ = `NULL`
	)

Definition at line 392 of file lsq.cc.

References sendNextFragmentToTranslation().

◆ ~SplitDataRequest()

gem5::minor::LSQ::SplitDataRequest::~SplitDataRequest ( )

Definition at line 409 of file lsq.cc.

References gem5::ArmISA::i.

Member Function Documentation

◆ finish()

void gem5::minor::LSQ::SplitDataRequest::finish	(	const Fault &	fault_,
		const RequestPtr &	request_,
		ThreadContext *	tc,
		BaseMMU::Mode	mode
	)

protectedvirtual

TLB response interface.

Implements gem5::BaseMMU::Translation.

Definition at line 334 of file lsq.cc.

References gem5::Complete, gem5::curTick(), DPRINTFS, gem5::minor::Pipeline::ExecuteStageId, and gem5::NoFault.

◆ getHeadPacket()

PacketPtr gem5::minor::LSQ::SplitDataRequest::getHeadPacket ( )

virtual

Get the head packet as counted by numIssuedFragments.

Implements gem5::minor::LSQ::LSQRequest.

Definition at line 608 of file lsq.cc.

◆ hasPacketsInMemSystem()

bool gem5::minor::LSQ::SplitDataRequest::hasPacketsInMemSystem ( )

inlinevirtual

True if this request has any issued packets in the memory system and so can't be interrupted until it gets responses.

Implements gem5::minor::LSQ::LSQRequest.

Definition at line 453 of file lsq.hh.

References numIssuedFragments, and numRetiredFragments.

◆ makeFragmentPackets()

void gem5::minor::LSQ::SplitDataRequest::makeFragmentPackets ( )

Make the packets to go with the requests so they can be sent to the memory system.

Definition at line 533 of file lsq.cc.

References data, DPRINTFS, and gem5::minor::makePacketForRequest().

◆ makeFragmentRequests()

void gem5::minor::LSQ::SplitDataRequest::makeFragmentRequests ( )

Make all the Requests for this transfer's fragments so that those requests can be sent for address translation.

Definition at line 419 of file lsq.cc.

References gem5::addrBlockOffset(), DPRINTFS, and gem5::isAnyActiveElement().

◆ retireResponse()

void gem5::minor::LSQ::SplitDataRequest::retireResponse ( PacketPtr packet_ )

virtual

For loads, paste the response data into the main response packet.

Implements gem5::minor::LSQ::LSQRequest.

Definition at line 624 of file lsq.cc.

References gem5::Complete, data, DPRINTFS, gem5::Packet::getConstPtr(), gem5::Packet::getSize(), gem5::Packet::isError(), gem5::NoFault, and gem5::Packet::req.

◆ sendNextFragmentToTranslation()

void gem5::minor::LSQ::SplitDataRequest::sendNextFragmentToTranslation ( )

Part of the address translation loop, see startAddTranslation.

Definition at line 701 of file lsq.cc.

References DPRINTFS, gem5::ThreadContext::getMMUPtr(), gem5::BaseMMU::Read, gem5::BaseMMU::translateTiming(), and gem5::BaseMMU::Write.

Referenced by SplitDataRequest().

◆ sentAllPackets()

bool gem5::minor::LSQ::SplitDataRequest::sentAllPackets ( )

inlinevirtual

Have we stepped past the end of fragmentPackets?

Implements gem5::minor::LSQ::LSQRequest.

Definition at line 457 of file lsq.hh.

References numIssuedFragments, and numTranslatedFragments.

◆ startAddrTranslation()

void gem5::minor::LSQ::SplitDataRequest::startAddrTranslation ( )

virtual

Start a loop of do { sendNextFragmentToTranslation ; translateTiming ; finish } while (numTranslatedFragments != numFragments) to complete all this requests' fragments' address translations.

Implements gem5::minor::LSQ::LSQRequest.

Definition at line 583 of file lsq.cc.

References gem5::minor::LSQ::LSQRequest::Complete, and gem5::minor::LSQ::LSQRequest::InTranslation.

◆ stepToNextPacket()

void gem5::minor::LSQ::SplitDataRequest::stepToNextPacket ( )

virtual

Step on numIssuedFragments.

Implements gem5::minor::LSQ::LSQRequest.

Definition at line 616 of file lsq.cc.

Member Data Documentation

◆ fragmentPackets

std::vector<Packet *> gem5::minor::LSQ::SplitDataRequest::fragmentPackets

protected

Packets matching fragmentRequests to issue fragments to memory.

Definition at line 418 of file lsq.hh.

◆ fragmentRequests

std::vector<RequestPtr> gem5::minor::LSQ::SplitDataRequest::fragmentRequests

protected

Fragment Requests corresponding to the address ranges of each fragment.

Definition at line 415 of file lsq.hh.

◆ numFragments

unsigned int gem5::minor::LSQ::SplitDataRequest::numFragments

protected

Number of fragments this request is split into.

Definition at line 396 of file lsq.hh.

◆ numInTranslationFragments

unsigned int gem5::minor::LSQ::SplitDataRequest::numInTranslationFragments

protected

Number of fragments in the address translation mechanism.

Definition at line 399 of file lsq.hh.

◆ numIssuedFragments

unsigned int gem5::minor::LSQ::SplitDataRequest::numIssuedFragments

protected

Number of fragments already issued (<= numFragments)

Definition at line 408 of file lsq.hh.

Referenced by hasPacketsInMemSystem(), and sentAllPackets().

◆ numRetiredFragments

unsigned int gem5::minor::LSQ::SplitDataRequest::numRetiredFragments

protected

Number of fragments retired back to this request.

Definition at line 411 of file lsq.hh.

Referenced by hasPacketsInMemSystem().

◆ numTranslatedFragments

unsigned int gem5::minor::LSQ::SplitDataRequest::numTranslatedFragments

protected

Number of fragments that have completed address translation, (numTranslatedFragments + numInTranslationFragments) <= numFragments.

When numTranslatedFramgents == numFragments, translation is complete

Definition at line 405 of file lsq.hh.

Referenced by sentAllPackets().

◆ translationEvent

EventFunctionWrapper gem5::minor::LSQ::SplitDataRequest::translationEvent

protected

Event to step between translations.

Definition at line 393 of file lsq.hh.

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

cpu/minor/lsq.hh
cpu/minor/lsq.cc

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ SplitDataRequest()

◆ ~SplitDataRequest()

Member Function Documentation

◆ finish()

◆ getHeadPacket()

◆ hasPacketsInMemSystem()

◆ makeFragmentPackets()

◆ makeFragmentRequests()

◆ retireResponse()

◆ sendNextFragmentToTranslation()

◆ sentAllPackets()

◆ startAddrTranslation()

◆ stepToNextPacket()

Member Data Documentation

◆ fragmentPackets

◆ fragmentRequests

◆ numFragments

◆ numInTranslationFragments

◆ numIssuedFragments

◆ numRetiredFragments

◆ numTranslatedFragments

◆ translationEvent