Internal class to bridge between an incoming snoop response from a CPU-side port and forwarding it through an outgoing CPU-side port. More...
#include <coherent_xbar.hh>
Inheritance diagram for gem5::CoherentXBar::SnoopRespPort:
Public Member Functions | |
| SnoopRespPort (QueuedResponsePort &cpu_side_port, CoherentXBar &_xbar) | |
| Create a snoop response port that mirrors a given CPU-side port. More... | |
| void | sendRetryResp () override |
| Override the sending of retries and pass them on through the mirrored CPU-side port. More... | |
| void | recvReqRetry () override |
| Called by the peer if sendTimingReq was called on this peer (causing recvTimingReq to be called on the peer) and was unsuccessful. More... | |
| bool | recvTimingResp (PacketPtr pkt) override |
| Receive a timing response from the peer. 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... | |
| Public Member Functions inherited from gem5::Port | |
| virtual | ~Port () |
| Virtual destructor due to inheritance. More... | |
| Port & | getPeer () |
| 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... | |
Private Attributes | |
| QueuedResponsePort & | cpuSidePort |
| The port which we mirror internally. More... | |
Additional Inherited Members | |
| 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 inherited from gem5::RequestPort | |
| SimObject & | owner |
| 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
Internal class to bridge between an incoming snoop response from a CPU-side port and forwarding it through an outgoing CPU-side port.
It is effectively a dangling memory-side port.
Definition at line 209 of file coherent_xbar.hh.
Constructor & Destructor Documentation
◆ SnoopRespPort()
|
inline |
Create a snoop response port that mirrors a given CPU-side port.
Definition at line 222 of file coherent_xbar.hh.
Member Function Documentation
◆ recvReqRetry()
|
inlineoverridevirtual |
Called by the peer if sendTimingReq was called on this peer (causing recvTimingReq to be called on the peer) and was unsuccessful.
Implements gem5::TimingRequestProtocol.
Definition at line 239 of file coherent_xbar.hh.
References panic.
◆ recvTimingResp()
|
inlineoverridevirtual |
Receive a timing response from the peer.
Implements gem5::TimingRequestProtocol.
Definition at line 245 of file coherent_xbar.hh.
References panic.
◆ sendRetryResp()
|
inlineoverridevirtual |
Override the sending of retries and pass them on through the mirrored CPU-side port.
Reimplemented from gem5::RequestPort.
Definition at line 232 of file coherent_xbar.hh.
References cpuSidePort, and gem5::ResponsePort::sendRetrySnoopResp().
Member Data Documentation
◆ cpuSidePort
|
private |
The port which we mirror internally.
Definition at line 215 of file coherent_xbar.hh.
Referenced by sendRetryResp().
The documentation for this class was generated from the following file:
- mem/coherent_xbar.hh