gem5
v20.1.0.0
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Implement a ‘stub’ port which just responds to requests by printing a message. More...
Public Member Functions | |
void | processResponseEvent () |
StubSlavePort (const std::string &name_, ExternalSlave &owner_) | |
Tick | recvAtomic (PacketPtr packet) |
Receive an atomic request packet from the peer. More... | |
void | recvFunctional (PacketPtr packet) |
Receive a functional request packet from the peer. More... | |
bool | recvTimingReq (PacketPtr packet) |
Receive a timing request from the peer. More... | |
bool | recvTimingSnoopResp (PacketPtr packet) |
Receive a timing snoop response from the peer. More... | |
void | recvRespRetry () |
Called by the peer if sendTimingResp was called on this protocol (causing recvTimingResp to be called on the peer) and was unsuccessful. More... | |
void | recvFunctionalSnoop (PacketPtr packet) |
Public Member Functions inherited from ExternalSlave::ExternalPort | |
ExternalPort (const std::string &name_, ExternalSlave &owner_) | |
~ExternalPort () | |
AddrRangeList | getAddrRanges () const |
Any or all of recv... More... | |
Public Member Functions inherited from SlavePort | |
SlavePort (const std::string &name, SimObject *_owner, PortID id=InvalidPortID) | |
Public Member Functions inherited from ResponsePort | |
ResponsePort (const std::string &name, SimObject *_owner, PortID id=InvalidPortID) | |
Response port. More... | |
virtual | ~ResponsePort () |
bool | isSnooping () const |
Find out if the peer request port is snooping or not. More... | |
void | sendRangeChange () const |
Called by the owner to send a range change. More... | |
void | unbind () override |
We let the request port do the work, so these don't do anything. More... | |
void | bind (Port &peer) override |
Attach to a peer port. More... | |
Tick | sendAtomicSnoop (PacketPtr pkt) |
Send an atomic snoop request packet, where the data is moved and the state is updated in zero time, without interleaving with other memory accesses. More... | |
void | sendFunctionalSnoop (PacketPtr pkt) const |
Send a functional snoop 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 | sendTimingResp (PacketPtr pkt) |
Attempt to send a timing response to the request port by calling its corresponding receive function. More... | |
void | sendTimingSnoopReq (PacketPtr pkt) |
Attempt to send a timing snoop request packet to the request port by calling its corresponding receive function. More... | |
void | sendRetryReq () |
Send a retry to the request port that previously attempted a sendTimingReq to this response port and failed. More... | |
void | sendRetrySnoopResp () |
Send a retry to the request port that previously attempted a sendTimingSnoopResp to this response port and failed. More... | |
Public Member Functions inherited from 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... | |
Public Attributes | |
EventFunctionWrapper | responseEvent |
PacketPtr | responsePacket |
Stub can handle a single request at a time. More... | |
bool | mustRetry |
Received a new request while processing a first. More... | |
Additional Inherited Members | |
Protected Member Functions inherited from ResponsePort | |
void | responderUnbind () |
Called by the request port to unbind. More... | |
void | responderBind (RequestPort &request_port) |
Called by the request port to bind. More... | |
Tick | recvAtomicBackdoor (PacketPtr pkt, MemBackdoorPtr &backdoor) override |
Default implementations. More... | |
bool | tryTiming (PacketPtr pkt) override |
Availability request from the peer. More... | |
bool | recvTimingSnoopResp (PacketPtr pkt) override |
Receive a timing snoop response from the peer. 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 AtomicResponseProtocol | |
Tick | sendSnoop (AtomicRequestProtocol *peer, PacketPtr pkt) |
Send an atomic snoop request packet, where the data is moved and the state is updated in zero time, without interleaving with other memory accesses. More... | |
Protected Member Functions inherited from TimingResponseProtocol | |
bool | sendResp (TimingRequestProtocol *peer, PacketPtr pkt) |
Attempt to send a timing response to the peer by calling its corresponding receive function. More... | |
void | sendSnoopReq (TimingRequestProtocol *peer, PacketPtr pkt) |
Attempt to send a timing snoop request packet to the peer by calling its corresponding receive function. More... | |
void | sendRetryReq (TimingRequestProtocol *peer) |
Send a retry to the peer that previously attempted a sendTimingReq to this protocol and failed. More... | |
void | sendRetrySnoopResp (TimingRequestProtocol *peer) |
Send a retry to the peer that previously attempted a sendTimingSnoopResp to this peer and failed. More... | |
Protected Member Functions inherited from FunctionalResponseProtocol | |
void | sendSnoop (FunctionalRequestProtocol *peer, PacketPtr pkt) const |
Send a functional snoop 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 ExternalSlave::ExternalPort | |
ExternalSlave & | owner |
Protected Attributes inherited from ResponsePort | |
SimObject & | owner |
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... | |
Implement a ‘stub’ port which just responds to requests by printing a message.
The stub port can be used to configure and test a system where the external port is used for a peripheral before connecting the external port
Definition at line 50 of file external_slave.cc.
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inline |
Definition at line 65 of file external_slave.cc.
References processResponseEvent().
void StubSlavePort::processResponseEvent | ( | ) |
Definition at line 117 of file external_slave.cc.
References Packet::headerDelay, Packet::makeResponse(), mustRetry, Packet::payloadDelay, responsePacket, ResponsePort::sendRetryReq(), and ResponsePort::sendTimingResp().
Referenced by StubSlavePort().
Receive an atomic request packet from the peer.
Implements AtomicResponseProtocol.
Definition at line 97 of file external_slave.cc.
References DDUMP, DPRINTF, DTRACE, ExternalSlave::ExternalPort::ExternalPort(), Packet::getAddr(), Packet::getConstPtr(), and Packet::getSize().
Referenced by recvFunctional(), and recvTimingReq().
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virtual |
Receive a functional request packet from the peer.
Implements FunctionalResponseProtocol.
Definition at line 111 of file external_slave.cc.
References recvAtomic().
void StubSlavePort::recvFunctionalSnoop | ( | PacketPtr | packet | ) |
Definition at line 167 of file external_slave.cc.
References fatal.
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virtual |
Called by the peer if sendTimingResp was called on this protocol (causing recvTimingResp to be called on the peer) and was unsuccessful.
Implements TimingResponseProtocol.
Definition at line 157 of file external_slave.cc.
References EventFunctionWrapper::process(), responseEvent, and responsePacket.
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virtual |
Receive a timing request from the peer.
Implements TimingResponseProtocol.
Definition at line 133 of file external_slave.cc.
References curTick(), mustRetry, ExternalSlave::ExternalPort::owner, recvAtomic(), responseEvent, responsePacket, and EventManager::schedule().
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virtual |
Receive a timing snoop response from the peer.
Implements TimingResponseProtocol.
Definition at line 150 of file external_slave.cc.
References fatal.
bool StubSlavePort::mustRetry |
Received a new request while processing a first.
Need to ask for a retry after completing this packet
Definition at line 63 of file external_slave.cc.
Referenced by processResponseEvent(), and recvTimingReq().
EventFunctionWrapper StubSlavePort::responseEvent |
Definition at line 55 of file external_slave.cc.
Referenced by recvRespRetry(), and recvTimingReq().
PacketPtr StubSlavePort::responsePacket |
Stub can handle a single request at a time.
This will be NULL when no packet is in flight
Definition at line 59 of file external_slave.cc.
Referenced by processResponseEvent(), recvRespRetry(), and recvTimingReq().