gem5 v24.0.0.0
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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. | |
void | recvFunctional (PacketPtr packet) |
Receive a functional request packet from the peer. | |
bool | recvTimingReq (PacketPtr packet) |
Receive a timing request from the peer. | |
bool | recvTimingSnoopResp (PacketPtr packet) |
Receive a timing snoop response from the peer. | |
void | recvRespRetry () |
Called by the peer if sendTimingResp was called on this protocol (causing recvTimingResp to be called on the peer) and was unsuccessful. | |
void | recvFunctionalSnoop (PacketPtr packet) |
Public Member Functions inherited from gem5::ExternalSlave::ExternalPort | |
ExternalPort (const std::string &name_, ExternalSlave &owner_) | |
~ExternalPort () | |
AddrRangeList | getAddrRanges () const |
Any or all of recv... can be overloaded to provide the port's functionality. | |
Public Member Functions inherited from gem5::ResponsePort | |
ResponsePort (const std::string &name, SimObject *_owner, PortID id=InvalidPortID) | |
Response port. | |
ResponsePort (const std::string &name, PortID id=InvalidPortID) | |
virtual | ~ResponsePort () |
bool | isSnooping () const |
Find out if the peer request port is snooping or not. | |
void | sendRangeChange () const |
Called by the owner to send a range change. | |
void | unbind () override |
We let the request port do the work, so these don't do anything. | |
void | bind (Port &peer) override |
Attach to a peer port. | |
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. | |
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. | |
bool | sendTimingResp (PacketPtr pkt) |
Attempt to send a timing response to the request port by calling its corresponding receive function. | |
void | sendTimingSnoopReq (PacketPtr pkt) |
Attempt to send a timing snoop request packet to the request port by calling its corresponding receive function. | |
void | sendRetryReq () |
Send a retry to the request port that previously attempted a sendTimingReq to this response port and failed. | |
void | sendRetrySnoopResp () |
Send a retry to the request port that previously attempted a sendTimingSnoopResp to this response port and failed. | |
Public Member Functions inherited from gem5::Port | |
virtual | ~Port () |
Virtual destructor due to inheritance. | |
Port & | getPeer () |
Return a reference to this port's peer. | |
const std::string | name () const |
Return port name (for DPRINTF). | |
PortID | getId () const |
Get the port id. | |
bool | isConnected () const |
Is this port currently connected to a peer? | |
void | takeOverFrom (Port *old) |
A utility function to make it easier to swap out ports. | |
Public Attributes | |
EventFunctionWrapper | responseEvent |
PacketPtr | responsePacket |
Stub can handle a single request at a time. | |
bool | mustRetry |
Received a new request while processing a first. | |
Additional Inherited Members | |
Protected Member Functions inherited from gem5::ResponsePort | |
void | responderUnbind () |
Called by the request port to unbind. | |
void | responderBind (RequestPort &request_port) |
Called by the request port to bind. | |
Tick | recvAtomicBackdoor (PacketPtr pkt, MemBackdoorPtr &backdoor) override |
Default implementations. | |
void | recvMemBackdoorReq (const MemBackdoorReq &req, MemBackdoorPtr &backdoor) override |
Receive a request for a back door to a range of memory. | |
bool | tryTiming (PacketPtr pkt) override |
Availability request from the peer. | |
Protected Member Functions inherited from gem5::Port | |
void | reportUnbound () const |
Port (const std::string &_name, PortID _id) | |
Abstract base class for ports. | |
Protected Member Functions inherited from gem5::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. | |
Protected Member Functions inherited from gem5::TimingResponseProtocol | |
bool | sendResp (TimingRequestProtocol *peer, PacketPtr pkt) |
Attempt to send a timing response to the peer by calling its corresponding receive function. | |
void | sendSnoopReq (TimingRequestProtocol *peer, PacketPtr pkt) |
Attempt to send a timing snoop request packet to the peer by calling its corresponding receive function. | |
void | sendRetryReq (TimingRequestProtocol *peer) |
Send a retry to the peer that previously attempted a sendTimingReq to this protocol and failed. | |
void | sendRetrySnoopResp (TimingRequestProtocol *peer) |
Send a retry to the peer that previously attempted a sendTimingSnoopResp to this peer and failed. | |
Protected Member Functions inherited from gem5::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. | |
Protected Attributes inherited from gem5::ExternalSlave::ExternalPort | |
ExternalSlave & | owner |
Protected Attributes inherited from gem5::ResponsePort | |
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. | |
Port * | _peer |
A pointer to this port's peer. | |
bool | _connected |
Whether this port is currently connected to a peer port. | |
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 54 of file external_slave.cc.
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inline |
Definition at line 69 of file external_slave.cc.
References processResponseEvent().
void gem5::StubSlavePort::processResponseEvent | ( | ) |
Definition at line 121 of file external_slave.cc.
References gem5::Packet::headerDelay, gem5::Packet::makeResponse(), mustRetry, gem5::Packet::payloadDelay, responsePacket, gem5::ResponsePort::sendRetryReq(), and gem5::ResponsePort::sendTimingResp().
Referenced by StubSlavePort().
Receive an atomic request packet from the peer.
Implements gem5::AtomicResponseProtocol.
Definition at line 101 of file external_slave.cc.
References DDUMP, DPRINTF, gem5::ExternalSlave::ExternalPort::ExternalPort(), gem5::Packet::getAddr(), gem5::Packet::getConstPtr(), and gem5::Packet::getSize().
Referenced by recvFunctional(), and recvTimingReq().
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virtual |
Receive a functional request packet from the peer.
Implements gem5::FunctionalResponseProtocol.
Definition at line 115 of file external_slave.cc.
References recvAtomic().
void gem5::StubSlavePort::recvFunctionalSnoop | ( | PacketPtr | packet | ) |
Definition at line 171 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 gem5::TimingResponseProtocol.
Definition at line 161 of file external_slave.cc.
References gem5::EventFunctionWrapper::process(), responseEvent, and responsePacket.
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virtual |
Receive a timing request from the peer.
Implements gem5::TimingResponseProtocol.
Definition at line 137 of file external_slave.cc.
References gem5::curTick(), mustRetry, gem5::ExternalSlave::ExternalPort::owner, recvAtomic(), responseEvent, responsePacket, and gem5::EventManager::schedule().
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virtual |
Receive a timing snoop response from the peer.
Reimplemented from gem5::ResponsePort.
Definition at line 154 of file external_slave.cc.
References fatal.
bool gem5::StubSlavePort::mustRetry |
Received a new request while processing a first.
Need to ask for a retry after completing this packet
Definition at line 67 of file external_slave.cc.
Referenced by processResponseEvent(), and recvTimingReq().
EventFunctionWrapper gem5::StubSlavePort::responseEvent |
Definition at line 59 of file external_slave.cc.
Referenced by recvRespRetry(), and recvTimingReq().
PacketPtr gem5::StubSlavePort::responsePacket |
Stub can handle a single request at a time.
This will be NULL when no packet is in flight
Definition at line 63 of file external_slave.cc.
Referenced by processResponseEvent(), recvRespRetry(), and recvTimingReq().