gem5  v21.1.0.2
Public Member Functions | Protected Member Functions | Private Attributes | List of all members
gem5::SimpleCache::MemSidePort Class Reference

Port on the memory-side that receives responses. More...

Inheritance diagram for gem5::SimpleCache::MemSidePort:
gem5::RequestPort gem5::Port gem5::AtomicRequestProtocol gem5::TimingRequestProtocol gem5::FunctionalRequestProtocol

Public Member Functions

 MemSidePort (const std::string &name, SimpleCache *owner)
 Constructor. More...
 
void sendPacket (PacketPtr pkt)
 Send a packet across this port. More...
 
- Public Member Functions inherited from gem5::RequestPort
 RequestPort (const std::string &name, SimObject *_owner, PortID id=InvalidPortID)
 Request port. More...
 
virtual ~RequestPort ()
 
void bind (Port &peer) override
 Bind this request port to a response port. More...
 
void unbind () override
 Unbind this request port and the associated response port. More...
 
virtual bool isSnooping () const
 Determine if this request port is snooping or not. More...
 
AddrRangeList getAddrRanges () const
 Get the address ranges of the connected responder port. More...
 
void printAddr (Addr a)
 Inject a PrintReq for the given address to print the state of that address throughout the memory system. More...
 
Tick sendAtomic (PacketPtr pkt)
 Send an atomic request packet, where the data is moved and the state is updated in zero time, without interleaving with other memory accesses. More...
 
Tick sendAtomicBackdoor (PacketPtr pkt, MemBackdoorPtr &backdoor)
 Send an atomic request packet like above, but also request a backdoor to the data being accessed. More...
 
void sendFunctional (PacketPtr pkt) const
 Send a functional 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 sendTimingReq (PacketPtr pkt)
 Attempt to send a timing request to the responder port by calling its corresponding receive function. More...
 
bool tryTiming (PacketPtr pkt) const
 Check if the responder can handle a timing request. More...
 
bool sendTimingSnoopResp (PacketPtr pkt)
 Attempt to send a timing snoop response packet to the response port by calling its corresponding receive function. More...
 
virtual void sendRetryResp ()
 Send a retry to the response port that previously attempted a sendTimingResp to this request port and failed. More...
 
- Public Member Functions inherited from gem5::Port
virtual ~Port ()
 Virtual destructor due to inheritance. More...
 
PortgetPeer ()
 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

bool recvTimingResp (PacketPtr pkt) override
 Receive a timing response from the response port. More...
 
void recvReqRetry () override
 Called by the response port if sendTimingReq was called on this request port (causing recvTimingReq to be called on the response port) and was unsuccesful. More...
 
void recvRangeChange () override
 Called to receive an address range change from the peer response port. More...
 
- Protected Member Functions inherited from gem5::RequestPort
Tick recvAtomicSnoop (PacketPtr pkt) override
 Default implementations. More...
 
void recvFunctionalSnoop (PacketPtr pkt) override
 Receive a functional snoop request packet from the peer. More...
 
void recvTimingSnoopReq (PacketPtr pkt) override
 Receive a timing snoop request from the peer. More...
 
void recvRetrySnoopResp () override
 Called by the peer if sendTimingSnoopResp was called on this protocol (causing recvTimingSnoopResp to be called on the peer) and was unsuccessful. More...
 
- Protected Member Functions inherited from gem5::Port
void reportUnbound () const
 
 Port (const std::string &_name, PortID _id)
 Abstract base class for ports. More...
 
- Protected Member Functions inherited from gem5::AtomicRequestProtocol
Tick send (AtomicResponseProtocol *peer, PacketPtr pkt)
 Send an atomic request packet, where the data is moved and the state is updated in zero time, without interleaving with other memory accesses. More...
 
Tick sendBackdoor (AtomicResponseProtocol *peer, PacketPtr pkt, MemBackdoorPtr &backdoor)
 Send an atomic request packet like above, but also request a backdoor to the data being accessed. More...
 
- Protected Member Functions inherited from gem5::TimingRequestProtocol
bool sendReq (TimingResponseProtocol *peer, PacketPtr pkt)
 Attempt to send a timing request to the peer by calling its corresponding receive function. More...
 
bool trySend (TimingResponseProtocol *peer, PacketPtr pkt) const
 Check if the peer can handle a timing request. More...
 
bool sendSnoopResp (TimingResponseProtocol *peer, PacketPtr pkt)
 Attempt to send a timing snoop response packet to it's peer by calling its corresponding receive function. More...
 
void sendRetryResp (TimingResponseProtocol *peer)
 Send a retry to the peer that previously attempted a sendTimingResp to this protocol and failed. More...
 
- Protected Member Functions inherited from gem5::FunctionalRequestProtocol
void send (FunctionalResponseProtocol *peer, PacketPtr pkt) const
 Send a functional 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...
 

Private Attributes

SimpleCacheowner
 The object that owns this object (SimpleCache) More...
 
PacketPtr blockedPacket
 If we tried to send a packet and it was blocked, store it here. More...
 

Additional Inherited Members

- Protected Attributes inherited from gem5::RequestPort
SimObjectowner
 
- Protected Attributes inherited from gem5::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...
 

Detailed Description

Port on the memory-side that receives responses.

Mostly just forwards requests to the cache (owner)

Definition at line 143 of file simple_cache.hh.

Constructor & Destructor Documentation

◆ MemSidePort()

gem5::SimpleCache::MemSidePort::MemSidePort ( const std::string &  name,
SimpleCache owner 
)
inline

Constructor.

Just calls the superclass constructor.

Definition at line 156 of file simple_cache.hh.

Member Function Documentation

◆ recvRangeChange()

void gem5::SimpleCache::MemSidePort::recvRangeChange ( )
overrideprotectedvirtual

Called to receive an address range change from the peer response port.

The default implementation ignores the change and does nothing. Override this function in a derived class if the owner needs to be aware of the address ranges, e.g. in an interconnect component like a bus.

Reimplemented from gem5::RequestPort.

Definition at line 188 of file simple_cache.cc.

◆ recvReqRetry()

void gem5::SimpleCache::MemSidePort::recvReqRetry ( )
overrideprotectedvirtual

Called by the response port if sendTimingReq was called on this request port (causing recvTimingReq to be called on the response port) and was unsuccesful.

Implements gem5::TimingRequestProtocol.

Definition at line 174 of file simple_cache.cc.

◆ recvTimingResp()

bool gem5::SimpleCache::MemSidePort::recvTimingResp ( PacketPtr  pkt)
overrideprotectedvirtual

Receive a timing response from the response port.

Implements gem5::TimingRequestProtocol.

Definition at line 167 of file simple_cache.cc.

◆ sendPacket()

void gem5::SimpleCache::MemSidePort::sendPacket ( PacketPtr  pkt)

Send a packet across this port.

This is called by the owner and all of the flow control is hanled in this function. This is a convenience function for the SimpleCache to send pkts.

Parameters
packetto send.

Definition at line 154 of file simple_cache.cc.

References panic_if.

Referenced by gem5::SimpleCache::accessTiming(), and gem5::SimpleCache::insert().

Member Data Documentation

◆ blockedPacket

PacketPtr gem5::SimpleCache::MemSidePort::blockedPacket
private

If we tried to send a packet and it was blocked, store it here.

Definition at line 150 of file simple_cache.hh.

◆ owner

SimpleCache* gem5::SimpleCache::MemSidePort::owner
private

The object that owns this object (SimpleCache)

Definition at line 147 of file simple_cache.hh.


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

Generated on Tue Sep 21 2021 12:28:10 for gem5 by doxygen 1.8.17