A cache response port is used for the CPU-side port of the cache, and it is basically a simple timing port that uses a transmit list for responses to the CPU (or connected requestor). More...
#include <base.hh>
Inheritance diagram for gem5::BaseCache::CacheResponsePort:
Public Member Functions | |
| void | setBlocked () |
| Do not accept any new requests. More... | |
| void | clearBlocked () |
| Return to normal operation and accept new requests. More... | |
| bool | isBlocked () const |
 Public Member Functions inherited from gem5::QueuedResponsePort | |
| QueuedResponsePort (const std::string &name, SimObject *owner, RespPacketQueue &resp_queue, PortID id=InvalidPortID) | |
| Create a QueuedPort with a given name, owner, and a supplied implementation of a packet queue. More... | |
| virtual | ~QueuedResponsePort () |
| void | schedTimingResp (PacketPtr pkt, Tick when) |
| Schedule the sending of a timing response. More... | |
| bool | trySatisfyFunctional (PacketPtr pkt) |
| Check the list of buffered packets against the supplied functional request. More... | |
| Public Member Functions inherited from gem5::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... | |
| virtual AddrRangeList | getAddrRanges () const =0 |
| Get a list of the non-overlapping address ranges the owner is responsible for. 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 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... | |
Protected Member Functions | |
| CacheResponsePort (const std::string &_name, BaseCache *_cache, const std::string &_label) | |
| Protected Member Functions inherited from gem5::QueuedResponsePort | |
| 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... | |
| Protected Member Functions inherited from gem5::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 gem5::Port | |
| void | reportUnbound () const |
| Port (const std::string &_name, PortID _id) | |
| Abstract base class for ports. More... | |
| 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. More... | |
| virtual Tick | recvAtomic (PacketPtr pkt)=0 |
| Receive an atomic request packet from the peer. More... | |
| 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. 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... | |
| virtual bool | recvTimingReq (PacketPtr pkt)=0 |
| Receive a timing request from the peer. More... | |
| 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. More... | |
| virtual void | recvFunctional (PacketPtr pkt)=0 |
| Receive a functional request packet from the peer. More... | |
Protected Attributes | |
| RespPacketQueue | queue |
| A normal packet queue used to store responses. More... | |
| bool | blocked |
| bool | mustSendRetry |
| Protected Attributes inherited from gem5::QueuedResponsePort | |
| RespPacketQueue & | respQueue |
| Packet queue used to store outgoing responses. More... | |
| 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. More... | |
| Port * | _peer |
| A pointer to this port's peer. More... | |
| bool | _connected |
| Whether this port is currently connected to a peer port. More... | |
Private Member Functions | |
| void | processSendRetry () |
Private Attributes | |
| EventFunctionWrapper | sendRetryEvent |
Detailed Description
A cache response port is used for the CPU-side port of the cache, and it is basically a simple timing port that uses a transmit list for responses to the CPU (or connected requestor).
In addition, it has the functionality to block the port for incoming requests. If blocked, the port will issue a retry once unblocked.
Constructor & Destructor Documentation
◆ CacheResponsePort()
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protected |
Definition at line 69 of file base.cc.
References processSendRetry().
Member Function Documentation
◆ clearBlocked()
| void gem5::BaseCache::CacheResponsePort::clearBlocked | ( | ) |
Return to normal operation and accept new requests.
Definition at line 160 of file base.cc.
References gem5::BaseCache::blocked, gem5::curTick(), and DPRINTF.
Referenced by gem5::BaseCache::clearBlocked().
◆ isBlocked()
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inline |
◆ processSendRetry()
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private |
◆ setBlocked()
| void gem5::BaseCache::CacheResponsePort::setBlocked | ( | ) |
Do not accept any new requests.
Definition at line 145 of file base.cc.
References blocked, gem5::EventManager::deschedule(), DPRINTF, mustSendRetry, gem5::ResponsePort::owner, gem5::Event::scheduled(), and sendRetryEvent.
Referenced by gem5::BaseCache::setBlocked().
Member Data Documentation
◆ blocked
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protected |
Definition at line 295 of file base.hh.
Referenced by isBlocked(), and setBlocked().
◆ mustSendRetry
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protected |
Definition at line 297 of file base.hh.
Referenced by setBlocked().
◆ queue
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protected |
◆ sendRetryEvent
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private |
Definition at line 303 of file base.hh.
Referenced by setBlocked().
The documentation for this class was generated from the following files: