gem5  v21.1.0.2
Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
gem5::o3::LSQ::DcachePort Class Reference

DcachePort class for the load/store queue. More...

#include <lsq.hh>

Inheritance diagram for gem5::o3::LSQ::DcachePort:
gem5::RequestPort gem5::Port gem5::AtomicRequestProtocol gem5::TimingRequestProtocol gem5::FunctionalRequestProtocol

Public Member Functions

 DcachePort (LSQ *_lsq, CPU *_cpu)
 Default constructor. 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...
 
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

virtual bool recvTimingResp (PacketPtr pkt)
 Timing version of receive. More...
 
virtual void recvTimingSnoopReq (PacketPtr pkt)
 Receive a timing snoop request from the peer. More...
 
virtual void recvFunctionalSnoop (PacketPtr pkt)
 Receive a functional snoop request packet from the peer. More...
 
virtual void recvReqRetry ()
 Handles doing a retry of the previous send. More...
 
virtual bool isSnooping () const
 As this CPU requires snooping to maintain the load store queue change the behaviour from the base CPU port. More...
 
- Protected Member Functions inherited from gem5::RequestPort
virtual void recvRangeChange ()
 Called to receive an address range change from the peer response port. More...
 
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...
 

Protected Attributes

LSQlsq
 Pointer to LSQ. More...
 
CPUcpu
 
- 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

DcachePort class for the load/store queue.

Definition at line 125 of file lsq.hh.

Constructor & Destructor Documentation

◆ DcachePort()

gem5::o3::LSQ::DcachePort::DcachePort ( LSQ _lsq,
CPU _cpu 
)

Default constructor.

Definition at line 77 of file lsq.cc.

Member Function Documentation

◆ isSnooping()

virtual bool gem5::o3::LSQ::DcachePort::isSnooping ( ) const
inlineprotectedvirtual

As this CPU requires snooping to maintain the load store queue change the behaviour from the base CPU port.

Returns
true since we have to snoop

Reimplemented from gem5::RequestPort.

Definition at line 160 of file lsq.hh.

◆ recvFunctionalSnoop()

virtual void gem5::o3::LSQ::DcachePort::recvFunctionalSnoop ( PacketPtr  pkt)
inlineprotectedvirtual

Receive a functional snoop request packet from the peer.

Implements gem5::FunctionalRequestProtocol.

Definition at line 146 of file lsq.hh.

◆ recvReqRetry()

void gem5::o3::LSQ::DcachePort::recvReqRetry ( )
protectedvirtual

Handles doing a retry of the previous send.

Implements gem5::TimingRequestProtocol.

Definition at line 1367 of file lsq.cc.

◆ recvTimingResp()

bool gem5::o3::LSQ::DcachePort::recvTimingResp ( PacketPtr  pkt)
protectedvirtual

Timing version of receive.

Handles writing back and completing the load or store that has returned from memory.

Implements gem5::TimingRequestProtocol.

Definition at line 1350 of file lsq.cc.

◆ recvTimingSnoopReq()

void gem5::o3::LSQ::DcachePort::recvTimingSnoopReq ( PacketPtr  pkt)
protectedvirtual

Receive a timing snoop request from the peer.

Implements gem5::TimingRequestProtocol.

Definition at line 1356 of file lsq.cc.

References gem5::o3::LSQ::cpu, gem5::AddressMonitor::doMonitor(), gem5::BaseCPU::getCpuAddrMonitor(), gem5::BaseCPU::numThreads, and gem5::o3::CPU::wakeup().

Member Data Documentation

◆ cpu

CPU* gem5::o3::LSQ::DcachePort::cpu
protected

Definition at line 131 of file lsq.hh.

◆ lsq

LSQ* gem5::o3::LSQ::DcachePort::lsq
protected

Pointer to LSQ.

Definition at line 130 of file lsq.hh.


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

Generated on Tue Sep 21 2021 12:31:45 for gem5 by doxygen 1.8.17