Derived SenderState to carry data access info. More...

#include <lsq.hh>

Inheritance diagram for Minor::LSQ::LSQRequest:

Public Types
enum	LSQRequestState { NotIssued, InTranslation, Translated, Failed, RequestIssuing, StoreToStoreBuffer, RequestNeedsRetry, StoreInStoreBuffer, StoreBufferIssuing, StoreBufferNeedsRetry, Complete }

Public Member Functions
	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. More...

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

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

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

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

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

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

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

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. More...

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

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

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

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

bool	isComplete () const
	Has this request been completed. More...

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

Public Member Functions inherited from BaseTLB::Translation
virtual	~Translation ()

virtual void	finish (const Fault &fault, const RequestPtr &req, ThreadContext *tc, 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. More...

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

virtual	~SenderState ()

Static Public Member Functions
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. More...

Public Attributes
LSQ &	port
	Owning port. More...

MinorDynInstPtr	inst
	Instruction which made this request. More...

bool	isLoad
	Load/store indication used for building packet. More...

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

PacketPtr	packet

RequestPtr	request
	The underlying request of this LSQRequest. More...

uint64_t *	res
	Res from pushRequest. More...

bool	skipped
	Was skipped. More...

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

bool	isTranslationDelayed
	Address translation is delayed due to table walk. More...

LSQRequestState	state

Public Attributes inherited from Packet::SenderState
SenderState *	predecessor

Protected Member Functions
void	markDelayed ()
	BaseTLB::Translation interface. More...

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

void	disableMemAccess ()

void	completeDisabledMemAccess ()

Detailed Description

Derived SenderState to carry data access info.

through address translation, the queues in this port and back from the memory system.

Definition at line 118 of file lsq.hh.

Member Enumeration Documentation

◆ LSQRequestState

enum Minor::LSQ::LSQRequest::LSQRequestState

Enumerator
NotIssued
InTranslation
Translated
Failed
RequestIssuing
StoreToStoreBuffer
RequestNeedsRetry
StoreInStoreBuffer
StoreBufferIssuing
StoreBufferNeedsRetry
Complete

Definition at line 161 of file lsq.hh.

Constructor & Destructor Documentation

◆ LSQRequest()

LSQ< Impl >::LSQRequest::LSQRequest	(	LSQ &	port_,
		MinorDynInstPtr	inst_,
		bool	isLoad_,
		PacketDataPtr	data_ = `NULL`,
		uint64_t *	res_ = `NULL`
	)

Definition at line 56 of file lsq.cc.

References request.

◆ ~LSQRequest()

LSQ< Impl >::LSQRequest::~LSQRequest ( )

virtual

Definition at line 1463 of file lsq.cc.

References data, and packet.

Member Function Documentation

◆ completeDisabledMemAccess()

void LSQ< Impl >::LSQRequest::completeDisabledMemAccess ( )

protected

Definition at line 94 of file lsq.cc.

References DPRINTFS, SimpleThread::pcState(), and Minor::ExecContext::setMemAccPredicate().

◆ containsAddrRangeOf() [1/2]

LSQ::AddrRangeCoverage LSQ< Impl >::LSQRequest::containsAddrRangeOf	(	Addr	req1_addr,
		unsigned int	req1_size,
		Addr	req2_addr,
		unsigned int	req2_size
	)

static

Does address range req1 (req1_addr to req1_addr + req1_size - 1) fully cover, partially cover or not cover at all the range req2.

Definition at line 118 of file lsq.cc.

References Minor::LSQ::FullAddrRangeCoverage, Minor::LSQ::NoAddrRangeCoverage, and Minor::LSQ::PartialAddrRangeCoverage.

Referenced by Minor::LSQ::StoreBuffer::canForwardDataToLoad(), and Minor::LSQ::StoreBuffer::forwardStoreData().

◆ containsAddrRangeOf() [2/2]

AddrRangeCoverage Minor::LSQ::LSQRequest::containsAddrRangeOf ( LSQRequest * other_request )

Does this request's address range fully cover the range of other_request?

◆ disableMemAccess()

void LSQ< Impl >::LSQRequest::disableMemAccess ( )

protected

Definition at line 111 of file lsq.cc.

References DPRINTFS.

◆ getHeadPacket()

virtual PacketPtr Minor::LSQ::LSQRequest::getHeadPacket ( )

pure virtual

Get the next packet to issue for this request.

For split transfers, it will be necessary to step through the available packets by calling do { getHeadPacket ; stepToNextPacket } while (!sentAllPackets) and by retiring response using retireResponse

Implemented in Minor::LSQ::SplitDataRequest, Minor::LSQ::SingleDataRequest, and Minor::LSQ::SpecialDataRequest.

Referenced by Minor::LSQ::tryToSend().

◆ hasPacketsInMemSystem()

virtual bool Minor::LSQ::LSQRequest::hasPacketsInMemSystem ( )

pure virtual

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

Implemented in Minor::LSQ::SplitDataRequest, Minor::LSQ::SingleDataRequest, and Minor::LSQ::SpecialDataRequest.

Referenced by Minor::LSQ::recvTimingResp(), and Minor::LSQ::tryToSendToTransfers().

◆ isBarrier()

bool LSQ< Impl >::LSQRequest::isBarrier ( )

virtual

Is this a request a barrier?

Reimplemented in Minor::LSQ::BarrierDataRequest.

Definition at line 155 of file lsq.cc.

Referenced by Minor::LSQ::StoreBuffer::countIssuedStore(), Minor::LSQ::findResponse(), Minor::LSQ::recvTimingResp(), and Minor::LSQ::StoreBuffer::step().

◆ isComplete()

bool LSQ< Impl >::LSQRequest::isComplete ( ) const

Has this request been completed.

This includes all reasons for completion: successful transfers, faults, skipped because of preceding faults

Definition at line 175 of file lsq.cc.

References Complete, and Minor::LSQ::state.

Referenced by Minor::LSQ::findResponse(), Minor::LSQ::recvTimingResp(), Minor::LSQ::StoreBuffer::step(), and Minor::LSQ::tryToSendToTransfers().

◆ makePacket()

void LSQ< Impl >::LSQRequest::makePacket ( )

Make a packet to use with the memory transaction.

Definition at line 1724 of file lsq.cc.

References data, Minor::makePacketForRequest(), and NoFault.

◆ markDelayed()

void Minor::LSQ::LSQRequest::markDelayed ( )

inlineprotectedvirtual

BaseTLB::Translation interface.

Implements BaseTLB::Translation.

Definition at line 187 of file lsq.hh.

References isTranslationDelayed.

◆ needsToBeSentToStoreBuffer()

bool LSQ< Impl >::LSQRequest::needsToBeSentToStoreBuffer ( )

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

Definition at line 161 of file lsq.cc.

References Minor::LSQ::state.

Referenced by Minor::Execute::handleMemResponse().

◆ reportData()

void LSQ< Impl >::LSQRequest::reportData ( std::ostream & os ) const

MinorTrace report interface.

Definition at line 183 of file lsq.cc.

References X86ISA::os, and Minor::LSQ::state.

Referenced by Minor::LSQ::StoreBuffer::minorTrace().

◆ retireResponse()

virtual void Minor::LSQ::LSQRequest::retireResponse ( PacketPtr packet_ )

pure virtual

Retire a response packet into the LSQRequest packet possibly completing this transfer.

Implemented in Minor::LSQ::SplitDataRequest, Minor::LSQ::SingleDataRequest, and Minor::LSQ::SpecialDataRequest.

Referenced by Minor::LSQ::recvTimingResp().

◆ sentAllPackets()

virtual bool Minor::LSQ::LSQRequest::sentAllPackets ( )

pure virtual

Have all packets been sent?

Implemented in Minor::LSQ::SplitDataRequest, Minor::LSQ::SingleDataRequest, and Minor::LSQ::SpecialDataRequest.

Referenced by Minor::LSQ::StoreBuffer::step(), and Minor::LSQ::tryToSend().

◆ setSkipped()

void Minor::LSQ::LSQRequest::setSkipped ( )

inline

Set this request as having been skipped before a memory transfer was attempt.

Definition at line 211 of file lsq.hh.

References skipped.

Referenced by Minor::LSQ::tryToSendToTransfers().

◆ setState()

void LSQ< Impl >::LSQRequest::setState ( LSQRequestState new_state )

Set state and output trace output.

Definition at line 167 of file lsq.cc.

References DPRINTFS, and Minor::LSQ::state.

Referenced by Minor::LSQ::StoreBuffer::insert(), Minor::LSQ::recvReqRetry(), Minor::LSQ::tryToSend(), and Minor::LSQ::tryToSendToTransfers().

◆ skippedMemAccess()

bool Minor::LSQ::LSQRequest::skippedMemAccess ( )

inline

Was no memory access attempted for this request?

Definition at line 207 of file lsq.hh.

References skipped.

◆ startAddrTranslation()

virtual void Minor::LSQ::LSQRequest::startAddrTranslation ( )

pure virtual

Start the address translation process for this request.

This will issue a translation request to the TLB.

Implemented in Minor::LSQ::SplitDataRequest, Minor::LSQ::SingleDataRequest, and Minor::LSQ::SpecialDataRequest.

Referenced by Minor::LSQ::pushRequest().

◆ stepToNextPacket()

virtual void Minor::LSQ::LSQRequest::stepToNextPacket ( )

pure virtual

Step to the next packet for the next call to getHeadPacket.

Implemented in Minor::LSQ::SplitDataRequest, Minor::LSQ::SingleDataRequest, and Minor::LSQ::SpecialDataRequest.

Referenced by Minor::LSQ::tryToSend().

◆ tryToSuppressFault()

void LSQ< Impl >::LSQRequest::tryToSuppressFault ( )

protected

Instructions may want to suppress translation faults (e.g.

non-faulting vector loads).

Definition at line 75 of file lsq.cc.

References DPRINTFS, NoFault, and SimpleThread::pcState().

Member Data Documentation

◆ data

PacketDataPtr Minor::LSQ::LSQRequest::data

Dynamically allocated and populated data carried for building write packets.

Definition at line 135 of file lsq.hh.

Referenced by ~LSQRequest().

◆ inst

MinorDynInstPtr Minor::LSQ::LSQRequest::inst

Instruction which made this request.

Definition at line 127 of file lsq.hh.

Referenced by Minor::LSQ::StoreBuffer::canForwardDataToLoad(), Minor::LSQ::StoreBuffer::deleteRequest(), Minor::LSQ::findResponse(), Minor::LSQ::StoreBuffer::insert(), Minor::LSQ::popResponse(), Minor::LSQ::recvTimingResp(), Minor::LSQ::sendStoreToStoreBuffer(), Minor::LSQ::StoreBuffer::step(), Minor::LSQ::threadSnoop(), Minor::LSQ::tryToSend(), and Minor::LSQ::tryToSendToTransfers().

◆ isLoad

bool Minor::LSQ::LSQRequest::isLoad

Load/store indication used for building packet.

This isn't carried by Request so we need to keep it here

Definition at line 131 of file lsq.hh.

Referenced by Minor::LSQ::StoreBuffer::forwardStoreData(), Minor::LSQ::moveFromRequestsToTransfers(), Minor::LSQ::popResponse(), Minor::LSQ::tryToSend(), and Minor::LSQ::tryToSendToTransfers().

◆ issuedToMemory

bool Minor::LSQ::LSQRequest::issuedToMemory

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

Definition at line 156 of file lsq.hh.

Referenced by Minor::LSQ::popResponse(), and Minor::LSQ::tryToSendToTransfers().

◆ isTranslationDelayed

bool Minor::LSQ::LSQRequest::isTranslationDelayed

Address translation is delayed due to table walk.

Definition at line 159 of file lsq.hh.

Referenced by markDelayed().

◆ packet

PacketPtr Minor::LSQ::LSQRequest::packet

Definition at line 141 of file lsq.hh.

Referenced by Minor::LSQ::StoreBuffer::canForwardDataToLoad(), Minor::LSQ::StoreBuffer::forwardStoreData(), Minor::LSQ::SingleDataRequest::getHeadPacket(), Minor::Execute::handleMemResponse(), Minor::LSQ::threadSnoop(), Minor::LSQ::tryToSendToTransfers(), and ~LSQRequest().

◆ port

LSQ& Minor::LSQ::LSQRequest::port

Owning port.

Definition at line 124 of file lsq.hh.

◆ request

RequestPtr Minor::LSQ::LSQRequest::request

The underlying request of this LSQRequest.

Definition at line 144 of file lsq.hh.

Referenced by Minor::LSQ::StoreBuffer::canForwardDataToLoad(), Minor::LSQ::StoreBuffer::forwardStoreData(), LSQRequest(), Minor::LSQ::pushRequest(), Minor::LSQ::tryToSend(), and Minor::LSQ::tryToSendToTransfers().

◆ res

uint64_t* Minor::LSQ::LSQRequest::res

Res from pushRequest.

Definition at line 147 of file lsq.hh.

◆ skipped

bool Minor::LSQ::LSQRequest::skipped

Was skipped.

Set to indicate any reason (faulted, bad stream sequence number, in a fault shadow) that this request did not perform a memory transfer

Definition at line 152 of file lsq.hh.

Referenced by setSkipped(), and skippedMemAccess().

◆ state

LSQRequestState Minor::LSQ::LSQRequest::state

Definition at line 183 of file lsq.hh.

Referenced by Minor::LSQ::BarrierDataRequest::BarrierDataRequest(), Minor::LSQ::FailedDataRequest::FailedDataRequest(), Minor::LSQ::findResponse(), Minor::LSQ::StoreBuffer::insert(), Minor::LSQ::needsToTick(), Minor::LSQ::popResponse(), Minor::LSQ::recvReqRetry(), Minor::LSQ::recvTimingResp(), Minor::LSQ::sendStoreToStoreBuffer(), Minor::LSQ::StoreBuffer::step(), Minor::LSQ::tryToSend(), and Minor::LSQ::tryToSendToTransfers().

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

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

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Member Functions

Detailed Description

Member Enumeration Documentation

◆ LSQRequestState

Constructor & Destructor Documentation

◆ LSQRequest()

◆ ~LSQRequest()

Member Function Documentation

◆ completeDisabledMemAccess()

◆ containsAddrRangeOf() [1/2]

◆ containsAddrRangeOf() [2/2]

◆ disableMemAccess()

◆ getHeadPacket()

◆ hasPacketsInMemSystem()

◆ isBarrier()

◆ isComplete()

◆ makePacket()

◆ markDelayed()

◆ needsToBeSentToStoreBuffer()

◆ reportData()

◆ retireResponse()

◆ sentAllPackets()

◆ setSkipped()

◆ setState()

◆ skippedMemAccess()

◆ startAddrTranslation()

◆ stepToNextPacket()

◆ tryToSuppressFault()

Member Data Documentation

◆ data

◆ inst

◆ isLoad

◆ issuedToMemory

◆ isTranslationDelayed

◆ packet

◆ port

◆ request

◆ res

◆ skipped

◆ state