A cache slave port is used for the CPU-side port of the cache, and it is basically a simple timing port that uses a transmit list for responses to the CPU (or connected master). More...

#include <base.hh>

Inheritance diagram for BaseCache::CacheSlavePort:

Public Member Functions
void	setBlocked ()
	Do not accept any new requests. More...

void	clearBlocked ()
	Return to normal operation and accept new requests. More...

bool	isBlocked () const

Public Member Functions inherited from QueuedSlavePort
	QueuedSlavePort (const std::string &name, SimObject *owner, RespPacketQueue &resp_queue, PortID id=InvalidPortID)
	Create a QueuedPort with a given name, owner, and a supplied implementation of a packet queue. More...

virtual	~QueuedSlavePort ()

void	schedTimingResp (PacketPtr pkt, Tick when)
	Schedule the sending of a timing response. More...

bool	trySatisfyFunctional (PacketPtr pkt)
	Check the list of buffered packets against the supplied functional request. More...

Public Member Functions inherited from SlavePort
	SlavePort (const std::string &name, SimObject *_owner, PortID id=InvalidPortID)
	Slave port. More...

virtual	~SlavePort ()

bool	isSnooping () const
	Find out if the peer master port is snooping or not. More...

void	sendRangeChange () const
	Called by the owner to send a range change. More...

virtual AddrRangeList	getAddrRanges () const =0
	Get a list of the non-overlapping address ranges the owner is responsible for. More...

void	unbind () override
	We let the master port do the work, so these don't do anything. More...

void	bind (Port &peer) override
	Attach to a peer port. More...

Tick	sendAtomicSnoop (PacketPtr pkt)
	Send an atomic snoop request packet, where the data is moved and the state is updated in zero time, without interleaving with other memory accesses. More...

void	sendFunctionalSnoop (PacketPtr pkt) const
	Send a functional snoop request packet, where the data is instantly updated everywhere in the memory system, without affecting the current state of any block or moving the block. More...

bool	sendTimingResp (PacketPtr pkt)
	Attempt to send a timing response to the master port by calling its corresponding receive function. More...

void	sendTimingSnoopReq (PacketPtr pkt)
	Attempt to send a timing snoop request packet to the master port by calling its corresponding receive function. More...

void	sendRetryReq ()
	Send a retry to the master port that previously attempted a sendTimingReq to this slave port and failed. More...

void	sendRetrySnoopResp ()
	Send a retry to the master port that previously attempted a sendTimingSnoopResp to this slave port and failed. More...

Public Member Functions inherited from Port
virtual	~Port ()
	Virtual destructor due to inheritance. More...

Port &	getPeer ()
	Return a reference to this port's peer. More...

const std::string	name () const
	Return port name (for DPRINTF). More...

PortID	getId () const
	Get the port id. More...

bool	isConnected () const
	Is this port currently connected to a peer? More...

void	takeOverFrom (Port *old)
	A utility function to make it easier to swap out ports. More...

Protected Member Functions
	CacheSlavePort (const std::string &_name, BaseCache *_cache, const std::string &_label)

Protected Member Functions inherited from QueuedSlavePort
void	recvRespRetry ()
	Called by the peer if sendTimingResp was called on this protocol (causing recvTimingResp to be called on the peer) and was unsuccessful. More...

Protected Member Functions inherited from SlavePort
void	slaveUnbind ()
	Called by the master port to unbind. More...

void	slaveBind (MasterPort &master_port)
	Called by the master port to bind. More...

Tick	recvAtomicBackdoor (PacketPtr pkt, MemBackdoorPtr &backdoor) override
	Default implementations. More...

bool	tryTiming (PacketPtr pkt) override
	Availability request from the peer. More...

bool	recvTimingSnoopResp (PacketPtr pkt) override
	Receive a timing snoop response from the peer. More...

Protected Member Functions inherited from Port
	Port (const std::string &_name, PortID _id)
	Abstract base class for ports. More...

Protected Member Functions inherited from AtomicResponseProtocol
Tick	sendSnoop (AtomicRequestProtocol *peer, PacketPtr pkt)
	Send an atomic snoop request packet, where the data is moved and the state is updated in zero time, without interleaving with other memory accesses. More...

virtual Tick	recvAtomic (PacketPtr pkt)=0
	Receive an atomic request packet from the peer. More...

Protected Member Functions inherited from TimingResponseProtocol
bool	sendResp (TimingRequestProtocol *peer, PacketPtr pkt)
	Attempt to send a timing response to the peer by calling its corresponding receive function. More...

void	sendSnoopReq (TimingRequestProtocol *peer, PacketPtr pkt)
	Attempt to send a timing snoop request packet to the peer by calling its corresponding receive function. More...

void	sendRetryReq (TimingRequestProtocol *peer)
	Send a retry to the peer that previously attempted a sendTimingReq to this protocol and failed. More...

void	sendRetrySnoopResp (TimingRequestProtocol *peer)
	Send a retry to the peer that previously attempted a sendTimingSnoopResp to this peer and failed. More...

virtual bool	recvTimingReq (PacketPtr pkt)=0
	Receive a timing request from the peer. More...

Protected Member Functions inherited from FunctionalResponseProtocol
void	sendSnoop (FunctionalRequestProtocol *peer, PacketPtr pkt) const
	Send a functional snoop request packet, where the data is instantly updated everywhere in the memory system, without affecting the current state of any block or moving the block. More...

virtual void	recvFunctional (PacketPtr pkt)=0
	Receive a functional request packet from the peer. More...

Protected Attributes
RespPacketQueue	queue
	A normal packet queue used to store responses. More...

bool	blocked

bool	mustSendRetry

Protected Attributes inherited from QueuedSlavePort
RespPacketQueue &	respQueue
	Packet queue used to store outgoing responses. More...

Protected Attributes inherited from SlavePort
SimObject &	owner

Protected Attributes inherited from Port
const PortID	id
	A numeric identifier to distinguish ports in a vector, and set to InvalidPortID in case this port is not part of a vector. More...

Port *	_peer
	A pointer to this port's peer. More...

bool	_connected
	Whether this port is currently connected to a peer port. More...

Private Member Functions
void	processSendRetry ()

Private Attributes
EventFunctionWrapper	sendRetryEvent

Detailed Description

A cache slave port is used for the CPU-side port of the cache, and it is basically a simple timing port that uses a transmit list for responses to the CPU (or connected master).

In addition, it has the functionality to block the port for incoming requests. If blocked, the port will issue a retry once unblocked.

Definition at line 244 of file base.hh.

Constructor & Destructor Documentation

◆ CacheSlavePort()

BaseCache::CacheSlavePort::CacheSlavePort	(	const std::string &	_name,
		BaseCache *	_cache,
		const std::string &	_label
	)

protected

Definition at line 66 of file base.cc.

References processSendRetry().

Member Function Documentation

◆ clearBlocked()

void BaseCache::CacheSlavePort::clearBlocked ( )

Return to normal operation and accept new requests.

Definition at line 147 of file base.cc.

References BaseCache::blocked, curTick(), and DPRINTF.

Referenced by BaseCache::clearBlocked().

◆ isBlocked()

bool BaseCache::CacheSlavePort::isBlocked ( ) const

inline

Definition at line 255 of file base.hh.

◆ processSendRetry()

void BaseCache::CacheSlavePort::processSendRetry ( )

private

Definition at line 159 of file base.cc.

References DPRINTF.

Referenced by CacheSlavePort().

◆ setBlocked()

void BaseCache::CacheSlavePort::setBlocked ( )

Do not accept any new requests.

Definition at line 132 of file base.cc.

References BaseCache::blocked, and DPRINTF.

Referenced by BaseCache::setBlocked().

Member Data Documentation

◆ blocked

bool BaseCache::CacheSlavePort::blocked

protected

Definition at line 265 of file base.hh.

◆ mustSendRetry

bool BaseCache::CacheSlavePort::mustSendRetry

protected

Definition at line 267 of file base.hh.

◆ queue

RespPacketQueue BaseCache::CacheSlavePort::queue

protected

A normal packet queue used to store responses.

Definition at line 263 of file base.hh.

◆ sendRetryEvent

EventFunctionWrapper BaseCache::CacheSlavePort::sendRetryEvent

private

Definition at line 273 of file base.hh.

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

mem/cache/base.hh
mem/cache/base.cc

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ CacheSlavePort()

Member Function Documentation

◆ clearBlocked()

◆ isBlocked()

◆ processSendRetry()

◆ setBlocked()

Member Data Documentation

◆ blocked

◆ mustSendRetry

◆ queue

◆ sendRetryEvent