#include <packet.hh>

Classes
struct	CommandInfo
	Structure that defines attributes and other data associated with a Command. More...

Public Types
enum	Command { InvalidCmd , ReadReq , ReadResp , ReadRespWithInvalidate , WriteReq , WriteResp , WriteCompleteResp , WritebackDirty , WritebackClean , WriteClean , CleanEvict , SoftPFReq , SoftPFExReq , HardPFReq , SoftPFResp , HardPFResp , WriteLineReq , UpgradeReq , SCUpgradeReq , UpgradeResp , SCUpgradeFailReq , UpgradeFailResp , ReadExReq , ReadExResp , ReadCleanReq , ReadSharedReq , LoadLockedReq , StoreCondReq , StoreCondFailReq , StoreCondResp , LockedRMWReadReq , LockedRMWReadResp , LockedRMWWriteReq , LockedRMWWriteResp , SwapReq , SwapResp , MemFenceReq = SwapResp + 3 , MemSyncReq , MemSyncResp , MemFenceResp , CleanSharedReq , CleanSharedResp , CleanInvalidReq , CleanInvalidResp , InvalidDestError , BadAddressError , ReadError , WriteError , FunctionalReadError , FunctionalWriteError , PrintReq , FlushReq , InvalidateReq , InvalidateResp , HTMReq , HTMReqResp , HTMAbort , TlbiExtSync , NUM_MEM_CMDS }
	List of all commands associated with a packet. More...

Public Member Functions
bool	isRead () const

bool	isWrite () const

bool	isUpgrade () const

bool	isRequest () const

bool	isResponse () const

bool	needsWritable () const

bool	needsResponse () const

bool	isInvalidate () const

bool	isEviction () const

bool	isClean () const

bool	fromCache () const

bool	isWriteback () const
	A writeback is an eviction that carries data. More...

bool	hasData () const
	Check if this particular packet type carries payload data. More...

bool	isLLSC () const

bool	isLockedRMW () const

bool	isSWPrefetch () const

bool	isHWPrefetch () const

bool	isPrefetch () const

bool	isError () const

bool	isPrint () const

bool	isFlush () const

bool	isDemand () const

Command	responseCommand () const

const std::string &	toString () const
	Return the string to a cmd given by idx. More...

int	toInt () const

	MemCmd (Command _cmd)

	MemCmd (int _cmd)

	MemCmd ()

bool	operator== (MemCmd c2) const

bool	operator!= (MemCmd c2) const

Private Types
enum	Attribute { IsRead , IsWrite , IsUpgrade , IsInvalidate , IsClean , NeedsWritable , IsRequest , IsResponse , NeedsResponse , IsEviction , IsSWPrefetch , IsHWPrefetch , IsLlsc , IsLockedRMW , HasData , IsError , IsPrint , IsFlush , FromCache , NUM_COMMAND_ATTRIBUTES }
	List of command attributes. More...

Private Member Functions
bool	testCmdAttrib (MemCmd::Attribute attrib) const

Static Private Member Functions
static constexpr unsigned long long	buildAttributes (std::initializer_list< Attribute > attrs)

Private Attributes
Command	cmd

Static Private Attributes
static const CommandInfo	commandInfo []
	Array to map Command enum to associated info. More...

Friends
class	Packet
	Packet probe point. More...

Detailed Description

Definition at line 75 of file packet.hh.

Member Enumeration Documentation

◆ Attribute

enum gem5::MemCmd::Attribute

private

List of command attributes.

Enumerator
IsRead	Data flows from responder to requester.
IsWrite	Data flows from requester to responder.
IsUpgrade
IsInvalidate
IsClean	Cleans any existing dirty blocks.
NeedsWritable	Requires writable copy to complete in-cache.
IsRequest	Issued by requester.
IsResponse	Issue by responder.
NeedsResponse	Requester needs response from target.
IsEviction
IsSWPrefetch
IsHWPrefetch
IsLlsc	Alpha/MIPS LL or SC access.
IsLockedRMW	x86 locked RMW access
HasData	There is an associated payload.
IsError	Error response.
IsPrint	Print state matching address (for debugging)
IsFlush	Flush the address from caches.
FromCache	Request originated from a caching agent.
NUM_COMMAND_ATTRIBUTES

Definition at line 158 of file packet.hh.

◆ Command

enum gem5::MemCmd::Command

List of all commands associated with a packet.

Enumerator
InvalidCmd
ReadReq
ReadResp
ReadRespWithInvalidate
WriteReq
WriteResp
WriteCompleteResp
WritebackDirty
WritebackClean
WriteClean
CleanEvict
SoftPFReq
SoftPFExReq
HardPFReq
SoftPFResp
HardPFResp
WriteLineReq
UpgradeReq
SCUpgradeReq
UpgradeResp
SCUpgradeFailReq
UpgradeFailResp
ReadExReq
ReadExResp
ReadCleanReq
ReadSharedReq
LoadLockedReq
StoreCondReq
StoreCondFailReq
StoreCondResp
LockedRMWReadReq
LockedRMWReadResp
LockedRMWWriteReq
LockedRMWWriteResp
SwapReq
SwapResp
MemFenceReq
MemSyncReq
MemSyncResp
MemFenceResp
CleanSharedReq
CleanSharedResp
CleanInvalidReq
CleanInvalidResp
InvalidDestError
BadAddressError
ReadError
WriteError
FunctionalReadError
FunctionalWriteError
PrintReq
FlushReq
InvalidateReq
InvalidateResp
HTMReq
HTMReqResp
HTMAbort
TlbiExtSync
NUM_MEM_CMDS

Definition at line 83 of file packet.hh.

Constructor & Destructor Documentation

◆ MemCmd() [1/3]

gem5::MemCmd::MemCmd ( Command _cmd )

inline

Definition at line 278 of file packet.hh.

◆ MemCmd() [2/3]

gem5::MemCmd::MemCmd ( int _cmd )

inline

Definition at line 279 of file packet.hh.

◆ MemCmd() [3/3]

gem5::MemCmd::MemCmd ( )

inline

Definition at line 280 of file packet.hh.

Member Function Documentation

◆ buildAttributes()

static constexpr unsigned long long gem5::MemCmd::buildAttributes ( std::initializer_list< Attribute > attrs )

inlinestaticconstexprprivate

Definition at line 183 of file packet.hh.

References gem5::ArmISA::attr.

◆ fromCache()

bool gem5::MemCmd::fromCache ( ) const

inline

Definition at line 236 of file packet.hh.

References FromCache, and testCmdAttrib().

Referenced by gem5::Packet::fromCache().

◆ hasData()

bool gem5::MemCmd::hasData ( ) const

inline

Check if this particular packet type carries payload data.

Note that this does not reflect if the data pointer of the packet is valid or not.

Definition at line 249 of file packet.hh.

References HasData, and testCmdAttrib().

Referenced by gem5::Packet::hasData(), and gem5::Packet::hasRespData().

◆ isClean()

bool gem5::MemCmd::isClean ( ) const

inline

Definition at line 235 of file packet.hh.

References IsClean, and testCmdAttrib().

Referenced by gem5::Packet::isClean(), and gem5::Packet::setSatisfied().

◆ isDemand()

bool gem5::MemCmd::isDemand ( ) const

inline

Definition at line 261 of file packet.hh.

References cmd, ReadCleanReq, ReadExReq, ReadReq, ReadSharedReq, WriteLineReq, and WriteReq.

Referenced by gem5::Packet::isDemand().

◆ isError()

bool gem5::MemCmd::isError ( ) const

inline

Definition at line 256 of file packet.hh.

References IsError, and testCmdAttrib().

Referenced by gem5::Packet::isError().

◆ isEviction()

bool gem5::MemCmd::isEviction ( ) const

inline

Definition at line 234 of file packet.hh.

References IsEviction, and testCmdAttrib().

Referenced by gem5::Packet::isEviction(), and gem5::Packet::setWriteThrough().

◆ isFlush()

bool gem5::MemCmd::isFlush ( ) const

inline

Definition at line 258 of file packet.hh.

References IsFlush, and testCmdAttrib().

Referenced by gem5::Packet::isFlush().

◆ isHWPrefetch()

bool gem5::MemCmd::isHWPrefetch ( ) const

inline

Definition at line 253 of file packet.hh.

References IsHWPrefetch, and testCmdAttrib().

Referenced by gem5::prefetch::BOP::notifyFill().

◆ isInvalidate()

bool gem5::MemCmd::isInvalidate ( ) const

inline

Definition at line 233 of file packet.hh.

References IsInvalidate, and testCmdAttrib().

Referenced by gem5::Packet::isInvalidate().

◆ isLLSC()

bool gem5::MemCmd::isLLSC ( ) const

inline

Definition at line 250 of file packet.hh.

References IsLlsc, and testCmdAttrib().

Referenced by gem5::BaseCache::allocOnFill(), and gem5::Packet::isLLSC().

◆ isLockedRMW()

bool gem5::MemCmd::isLockedRMW ( ) const

inline

Definition at line 251 of file packet.hh.

References IsLockedRMW, and testCmdAttrib().

Referenced by gem5::Packet::isLockedRMW().

◆ isPrefetch()

bool gem5::MemCmd::isPrefetch ( ) const

inline

Definition at line 254 of file packet.hh.

References IsHWPrefetch, IsSWPrefetch, and testCmdAttrib().

Referenced by gem5::BaseCache::allocOnFill().

◆ isPrint()

bool gem5::MemCmd::isPrint ( ) const

inline

Definition at line 257 of file packet.hh.

References IsPrint, and testCmdAttrib().

Referenced by gem5::Packet::isPrint().

◆ isRead()

bool gem5::MemCmd::isRead ( ) const

inline

Definition at line 226 of file packet.hh.

References IsRead, and testCmdAttrib().

Referenced by gem5::TraceGen::getNextPacket(), gem5::StackDistProbe::handleRequest(), gem5::Packet::isRead(), gem5::TraceCPU::FixedRetryGen::nextExecute(), gem5::DmaPort::sendAtomicBdReq(), gem5::CommMonitor::MonitorStats::updateReqStats(), and gem5::CommMonitor::MonitorStats::updateRespStats().

◆ isRequest()

bool gem5::MemCmd::isRequest ( ) const

inline

Definition at line 229 of file packet.hh.

References IsRequest, and testCmdAttrib().

Referenced by gem5::MemFootprintProbe::handleRequest(), and gem5::Packet::isRequest().

◆ isResponse()

bool gem5::MemCmd::isResponse ( ) const

inline

Definition at line 230 of file packet.hh.

References IsResponse, and testCmdAttrib().

Referenced by gem5::Packet::isResponse().

◆ isSWPrefetch()

bool gem5::MemCmd::isSWPrefetch ( ) const

inline

Definition at line 252 of file packet.hh.

References IsSWPrefetch, and testCmdAttrib().

Referenced by gem5::Cache::handleTimingReqMiss(), gem5::prefetch::Base::probeNotify(), and gem5::Cache::serviceMSHRTargets().

◆ isUpgrade()

bool gem5::MemCmd::isUpgrade ( ) const

inline

Definition at line 228 of file packet.hh.

References IsUpgrade, and testCmdAttrib().

Referenced by gem5::Packet::isUpgrade().

◆ isWrite()

bool gem5::MemCmd::isWrite ( ) const

inline

Definition at line 227 of file packet.hh.

References IsWrite, and testCmdAttrib().

Referenced by gem5::BaseGen::getPacket(), gem5::StackDistProbe::handleRequest(), gem5::Packet::isWrite(), gem5::TraceCPU::FixedRetryGen::send(), gem5::Packet::setWriteThrough(), gem5::CommMonitor::MonitorStats::updateReqStats(), and gem5::CommMonitor::MonitorStats::updateRespStats().

◆ isWriteback()

bool gem5::MemCmd::isWriteback ( ) const

inline

A writeback is an eviction that carries data.

Definition at line 241 of file packet.hh.

References HasData, IsEviction, and testCmdAttrib().

Referenced by gem5::Packet::isWriteback().

◆ needsResponse()

bool gem5::MemCmd::needsResponse ( ) const

inline

Definition at line 232 of file packet.hh.

References NeedsResponse, and testCmdAttrib().

Referenced by gem5::Packet::needsResponse().

◆ needsWritable()

bool gem5::MemCmd::needsWritable ( ) const

inline

Definition at line 231 of file packet.hh.

References NeedsWritable, and testCmdAttrib().

Referenced by gem5::Packet::needsWritable().

◆ operator!=()

bool gem5::MemCmd::operator!= ( MemCmd c2 ) const

inline

Definition at line 283 of file packet.hh.

References gem5::c2, and cmd.

◆ operator==()

bool gem5::MemCmd::operator== ( MemCmd c2 ) const

inline

Definition at line 282 of file packet.hh.

References gem5::c2, and cmd.

◆ responseCommand()

Command gem5::MemCmd::responseCommand ( ) const

inline

Definition at line 269 of file packet.hh.

References cmd, commandInfo, and gem5::MemCmd::CommandInfo::response.

Referenced by gem5::TimingSimpleCPU::buildSplitPacket(), gem5::Packet::hasRespData(), gem5::Packet::makeHtmTransactionalReqResponse(), and gem5::Packet::makeResponse().

◆ testCmdAttrib()

bool gem5::MemCmd::testCmdAttrib ( MemCmd::Attribute attrib ) const

inlineprivate

Definition at line 219 of file packet.hh.

References gem5::MemCmd::CommandInfo::attributes, cmd, and commandInfo.

Referenced by fromCache(), hasData(), isClean(), isError(), isEviction(), isFlush(), isHWPrefetch(), isInvalidate(), isLLSC(), isLockedRMW(), isPrefetch(), isPrint(), isRead(), isRequest(), isResponse(), isSWPrefetch(), isUpgrade(), isWrite(), isWriteback(), needsResponse(), and needsWritable().

◆ toInt()

int gem5::MemCmd::toInt ( ) const

inline

Definition at line 276 of file packet.hh.

References cmd.

Referenced by gem5::Packet::cmdToIndex(), and gem5::MemTraceProbe::handleRequest().

◆ toString()

const std::string& gem5::MemCmd::toString ( ) const

inline

Return the string to a cmd given by idx.

Definition at line 275 of file packet.hh.

References cmd, commandInfo, and gem5::MemCmd::CommandInfo::str.

Referenced by gem5::Packet::cmdString(), gem5::DmaPort::handleResp(), gem5::DmaThread::hitCallback(), gem5::GpuWavefront::hitCallback(), gem5::X86ISA::IntResponsePort< Device >::recvAtomic(), gem5::minor::LSQ::recvTimingResp(), gem5::ComputeUnit::DTLBPort::recvTimingResp(), gem5::ComputeUnit::ScalarDTLBPort::recvTimingResp(), and gem5::BaseXBar::regStats().

Friends And Related Function Documentation

◆ Packet

friend class Packet

friend

Packet probe point.

This probe point provides a unified interface for components that want to instrument Packets in the memory system. Components should when possible adhere to the following naming scheme:

PktRequest: Requests sent out on the memory side of a normal components and incoming requests for memories. Packets should not be duplicated (i.e., a packet should only appear once irrespective of the receiving end requesting a retry).
PktResponse: Response received from the memory side of a normal component or a response being sent out from a memory.
PktRequestCPU: Incoming, accepted, memory request on the CPU side of a two-sided component. This probe point is primarily intended for components that cache or forward requests (e.g., caches and XBars), single-sided components should use PktRequest instead. The probe point should only be called when a packet is accepted.
PktResponseCPU: Outgoing response memory request on the CPU side of a two-sided component. This probe point is primarily intended for components that cache or forward requests (e.g., caches and XBars), single-sided components should use PktRequest instead.

Definition at line 77 of file packet.hh.

Member Data Documentation

◆ cmd

Command gem5::MemCmd::cmd

private

Definition at line 216 of file packet.hh.

Referenced by isDemand(), operator!=(), operator==(), gem5::TraceGen::InputStream::read(), gem5::TraceCPU::FixedRetryGen::InputStream::read(), responseCommand(), testCmdAttrib(), toInt(), and toString().

◆ commandInfo

const MemCmd::CommandInfo gem5::MemCmd::commandInfo

staticprivate

Array to map Command enum to associated info.

Definition at line 212 of file packet.hh.

Referenced by responseCommand(), testCmdAttrib(), and toString().

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

mem/packet.hh
mem/packet.cc

Classes

Public Types

Public Member Functions

Private Types

Private Member Functions

Static Private Member Functions

Private Attributes

Static Private Attributes

Friends

Detailed Description

Member Enumeration Documentation

◆ Attribute

◆ Command

Constructor & Destructor Documentation

◆ MemCmd() [1/3]

◆ MemCmd() [2/3]

◆ MemCmd() [3/3]

Member Function Documentation

◆ buildAttributes()

◆ fromCache()

◆ hasData()

◆ isClean()

◆ isDemand()

◆ isError()

◆ isEviction()

◆ isFlush()

◆ isHWPrefetch()

◆ isInvalidate()

◆ isLLSC()

◆ isLockedRMW()

◆ isPrefetch()

◆ isPrint()

◆ isRead()

◆ isRequest()

◆ isResponse()

◆ isSWPrefetch()

◆ isUpgrade()

◆ isWrite()

◆ isWriteback()

◆ needsResponse()

◆ needsWritable()

◆ operator!=()

◆ operator==()

◆ responseCommand()

◆ testCmdAttrib()

◆ toInt()

◆ toString()

Friends And Related Function Documentation

◆ Packet

Member Data Documentation

◆ cmd

◆ commandInfo