gem5::BaseXBar::ReqLayer Class Reference

#include <xbar.hh>

Inheritance diagram for gem5::BaseXBar::ReqLayer:

Public Member Functions
	ReqLayer (RequestPort &_port, BaseXBar &_xbar, const std::string &_name)
	Create a request layer and give it a name.
Public Member Functions inherited from gem5::BaseXBar::Layer< ResponsePort, RequestPort >
	Layer (RequestPort &_port, BaseXBar &_xbar, const std::string &_name)
	Create a layer and give it a name.
DrainState	drain () override
	Drain according to the normal semantics, so that the crossbar can tell the layer to drain, and pass an event to signal back when drained.
const std::string	name () const
bool	tryTiming (ResponsePort *src_port)
	Determine if the layer accepts a packet from a specific port.
void	succeededTiming (Tick busy_time)
	Deal with a destination port accepting a packet by potentially removing the source port from the retry list (if retrying) and occupying the layer accordingly.
void	failedTiming (ResponsePort *src_port, Tick busy_time)
	Deal with a destination port not accepting a packet by potentially adding the source port to the retry list (if not already at the front) and occupying the layer accordingly.
void	occupyLayer (Tick until)
void	retryWaiting ()
	Send a retry to the port at the head of waitingForLayer.
void	recvRetry ()
	Handle a retry from a neighbouring module.
Public Member Functions inherited from gem5::Drainable
DrainState	drainState () const
	Return the current drain state of an object.
virtual void	notifyFork ()
	Notify a child process of a fork.
Public Member Functions inherited from gem5::statistics::Group
	Group (Group *parent, const char *name=nullptr)
	Construct a new statistics group.
virtual	~Group ()
virtual void	regStats ()
	Callback to set stat parameters.
virtual void	resetStats ()
	Callback to reset stats.
virtual void	preDumpStats ()
	Callback before stats are dumped.
void	addStat (statistics::Info *info)
	Register a stat with this group.
const std::map< std::string, Group * > &	getStatGroups () const
	Get all child groups associated with this object.
const std::vector< Info * > &	getStats () const
	Get all stats associated with this object.
void	addStatGroup (const char *name, Group *block)
	Add a stat block as a child of this block.
const Info *	resolveStat (std::string name) const
	Resolve a stat by its name within this group.
void	mergeStatGroup (Group *block)
	Merge the contents (stats & children) of a block to this block.
	Group ()=delete
	Group (const Group &)=delete
Group &	operator= (const Group &)=delete

Protected Member Functions
void	sendRetry (ResponsePort *retry_port) override
	Sending the actual retry, in a manner specific to the individual layers.
Protected Member Functions inherited from gem5::Drainable
	Drainable ()
virtual	~Drainable ()
virtual void	drainResume ()
	Resume execution after a successful drain.
void	signalDrainDone () const
	Signal that an object is drained.

Detailed Description

Definition at line 237 of file xbar.hh.

Constructor & Destructor Documentation

ReqLayer()

gem5::BaseXBar::ReqLayer::ReqLayer ( RequestPort & _port, BaseXBar & _xbar, const std::string & _name )

inline

Create a request layer and give it a name.

Parameters

_port	destination port the layer converges at
_xbar	the crossbar this layer belongs to
_name	the layer's name

Definition at line 247 of file xbar.hh.

Member Function Documentation

sendRetry()

void gem5::BaseXBar::ReqLayer::sendRetry ( ResponsePort * retry_port )

inlineoverrideprotectedvirtual

Sending the actual retry, in a manner specific to the individual layers.

Note that for a RequestPort, there is both a RequestLayer and a SnoopResponseLayer using the same port, but using different functions for the flow control.

Implements gem5::BaseXBar::Layer< ResponsePort, RequestPort >.

Definition at line 254 of file xbar.hh.

References gem5::ResponsePort::sendRetryReq().

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

• mem/xbar.hh