gem5  v21.1.0.2
Public Member Functions | Protected Member Functions | List of all members
gem5::BaseXBar::ReqLayer Class Reference

#include <xbar.hh>

Inheritance diagram for gem5::BaseXBar::ReqLayer:
gem5::BaseXBar::Layer< ResponsePort, RequestPort > gem5::Drainable gem5::statistics::Group

Public Member Functions

 ReqLayer (RequestPort &_port, BaseXBar &_xbar, const std::string &_name)
 Create a request layer and give it a name. More...
 
- 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. More...
 
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. More...
 
const std::string name () const
 
bool tryTiming (ResponsePort *src_port)
 Determine if the layer accepts a packet from a specific port. More...
 
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. More...
 
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. More...
 
void occupyLayer (Tick until)
 
void retryWaiting ()
 Send a retry to the port at the head of waitingForLayer. More...
 
void recvRetry ()
 Handle a retry from a neighbouring module. More...
 
- Public Member Functions inherited from gem5::Drainable
DrainState drainState () const
 Return the current drain state of an object. More...
 
virtual void notifyFork ()
 Notify a child process of a fork. More...
 
- Public Member Functions inherited from gem5::statistics::Group
 Group (Group *parent, const char *name=nullptr)
 Construct a new statistics group. More...
 
virtual ~Group ()
 
virtual void regStats ()
 Callback to set stat parameters. More...
 
virtual void resetStats ()
 Callback to reset stats. More...
 
virtual void preDumpStats ()
 Callback before stats are dumped. More...
 
void addStat (statistics::Info *info)
 Register a stat with this group. More...
 
const std::map< std::string, Group * > & getStatGroups () const
 Get all child groups associated with this object. More...
 
const std::vector< Info * > & getStats () const
 Get all stats associated with this object. More...
 
void addStatGroup (const char *name, Group *block)
 Add a stat block as a child of this block. More...
 
const InforesolveStat (std::string name) const
 Resolve a stat by its name within this group. More...
 
void mergeStatGroup (Group *block)
 Merge the contents (stats & children) of a block to this block. More...
 
 Group ()=delete
 
 Group (const Group &)=delete
 
Groupoperator= (const Group &)=delete
 

Protected Member Functions

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

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
_portdestination port the layer converges at
_xbarthe crossbar this layer belongs to
_namethe 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().


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

Generated on Tue Sep 21 2021 12:27:20 for gem5 by doxygen 1.8.17