gem5  v20.1.0.0
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TimingSimpleCPU::DcachePort Class Reference
Inheritance diagram for TimingSimpleCPU::DcachePort:
TimingSimpleCPU::TimingCPUPort RequestPort Port AtomicRequestProtocol TimingRequestProtocol FunctionalRequestProtocol

Classes

struct  DTickEvent
 

Public Member Functions

 DcachePort (TimingSimpleCPU *_cpu)
 
- Public Member Functions inherited from TimingSimpleCPU::TimingCPUPort
 TimingCPUPort (const std::string &_name, TimingSimpleCPU *_cpu)
 
- Public Member Functions inherited from 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 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...
 

Public Attributes

Addr cacheBlockMask
 

Protected Member Functions

virtual void recvTimingSnoopReq (PacketPtr pkt)
 Snoop a coherence request, we need to check if this causes a wakeup event on a cpu that is monitoring an address. More...
 
virtual void recvFunctionalSnoop (PacketPtr pkt)
 Receive a functional snoop request packet from the peer. More...
 
virtual bool recvTimingResp (PacketPtr pkt)
 Receive a timing response from the peer. More...
 
virtual void recvReqRetry ()
 Called by the peer if sendTimingReq was called on this peer (causing recvTimingReq to be called on the peer) and was unsuccessful. More...
 
virtual bool isSnooping () const
 Determine if this request port is snooping or not. More...
 
- Protected Member Functions inherited from 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 Port
void reportUnbound () const
 
 Port (const std::string &_name, PortID _id)
 Abstract base class for ports. More...
 
- Protected Member Functions inherited from 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 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 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

DTickEvent tickEvent
 
- Protected Attributes inherited from TimingSimpleCPU::TimingCPUPort
TimingSimpleCPUcpu
 
EventFunctionWrapper retryRespEvent
 
- Protected Attributes inherited from RequestPort
SimObjectowner
 
- 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...
 

Detailed Description

Definition at line 212 of file timing.hh.

Constructor & Destructor Documentation

◆ DcachePort()

TimingSimpleCPU::DcachePort::DcachePort ( TimingSimpleCPU _cpu)
inline

Member Function Documentation

◆ isSnooping()

virtual bool TimingSimpleCPU::DcachePort::isSnooping ( ) const
inlineprotectedvirtual

Determine if this request port is snooping or not.

The default implementation returns false and thus tells the neighbour we are not snooping. Any request port that wants to receive snoop requests (e.g. a cache connected to a bus) has to override this function.

Returns
true if the port should be considered a snooper

Reimplemented from RequestPort.

Definition at line 236 of file timing.hh.

◆ recvFunctionalSnoop()

void TimingSimpleCPU::DcachePort::recvFunctionalSnoop ( PacketPtr  pkt)
protectedvirtual

Receive a functional snoop request packet from the peer.

Implements FunctionalRequestProtocol.

Definition at line 1111 of file timing.cc.

References TimingSimpleCPU::TimingCPUPort::cpu, AddressMonitor::doMonitor(), BaseCPU::getCpuAddrMonitor(), BaseCPU::numThreads, and BaseSimpleCPU::wakeup().

◆ recvReqRetry()

void TimingSimpleCPU::DcachePort::recvReqRetry ( )
protectedvirtual

◆ recvTimingResp()

bool TimingSimpleCPU::DcachePort::recvTimingResp ( PacketPtr  pkt)
protectedvirtual

◆ recvTimingSnoopReq()

void TimingSimpleCPU::DcachePort::recvTimingSnoopReq ( PacketPtr  pkt)
protectedvirtual

Snoop a coherence request, we need to check if this causes a wakeup event on a cpu that is monitoring an address.

Implements TimingRequestProtocol.

Definition at line 1091 of file timing.cc.

References TimingSimpleCPU::TimingCPUPort::cpu, AddressMonitor::doMonitor(), BaseCPU::getCpuAddrMonitor(), ArmISA::handleLockedSnoop(), Packet::isInvalidate(), Packet::isWrite(), BaseCPU::numThreads, BaseSimpleCPU::threadInfo, and BaseSimpleCPU::wakeup().

Member Data Documentation

◆ cacheBlockMask

Addr TimingSimpleCPU::DcachePort::cacheBlockMask

Definition at line 223 of file timing.hh.

Referenced by DcachePort(), TimingSimpleCPU::sendData(), and TimingSimpleCPU::threadSnoop().

◆ tickEvent

DTickEvent TimingSimpleCPU::DcachePort::tickEvent
protected

Definition at line 248 of file timing.hh.


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

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