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gem5
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gem5
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A cache slave 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 master). More...
#include <base.hh>
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 QueuedSlavePort | |
| QueuedSlavePort (const std::string &name, MemObject *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 | ~QueuedSlavePort () |
| void | schedTimingResp (PacketPtr pkt, Tick when, bool force_order=false) |
| Schedule the sending of a timing response. More... | |
| bool | checkFunctional (PacketPtr pkt) |
| Check the list of buffered packets against the supplied functional request. More... | |
| Public Member Functions inherited from SlavePort | |
| SlavePort (const std::string &name, MemObject *owner, PortID id=InvalidPortID) | |
| Slave port. More... | |
| virtual | ~SlavePort () |
| 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) |
| 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 master port by calling its corresponding receive function. More... | |
| void | sendTimingSnoopReq (PacketPtr pkt) |
| Attempt to send a timing snoop request packet to the master port by calling its corresponding receive function. More... | |
| void | sendRetryReq () |
| Send a retry to the master port that previously attempted a sendTimingReq to this slave port and failed. More... | |
| void | sendRetrySnoopResp () |
| Send a retry to the master port that previously attempted a sendTimingSnoopResp to this slave port and failed. More... | |
| bool | isSnooping () const |
| Find out if the peer master 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... | |
| Public Member Functions inherited from BaseSlavePort | |
| BaseMasterPort & | getMasterPort () const |
| bool | isConnected () const |
| Public Member Functions inherited from Port | |
| const std::string | name () const |
| Return port name (for DPRINTF). More... | |
| PortID | getId () const |
| Get the port id. More... | |
Protected Member Functions | |
| CacheSlavePort (const std::string &_name, BaseCache *_cache, const std::string &_label) | |
| Protected Member Functions inherited from QueuedSlavePort | |
| void | recvRespRetry () |
| Called by the master port if sendTimingResp was called on this slave port (causing recvTimingResp to be called on the master port) and was unsuccesful. More... | |
| Protected Member Functions inherited from SlavePort | |
| void | unbind () |
| Called by the master port to unbind. More... | |
| void | bind (MasterPort &master_port) |
| Called by the master port to bind. More... | |
| virtual Tick | recvAtomic (PacketPtr pkt)=0 |
| Receive an atomic request packet from the master port. More... | |
| virtual void | recvFunctional (PacketPtr pkt)=0 |
| Receive a functional request packet from the master port. More... | |
| virtual bool | recvTimingReq (PacketPtr pkt)=0 |
| Receive a timing request from the master port. More... | |
| virtual bool | recvTimingSnoopResp (PacketPtr pkt) |
| Receive a timing snoop response from the master port. More... | |
| Protected Member Functions inherited from BaseSlavePort | |
| BaseSlavePort (const std::string &name, MemObject *owner, PortID id=InvalidPortID) | |
| virtual | ~BaseSlavePort () |
| Protected Member Functions inherited from Port | |
| Port (const std::string &_name, MemObject &_owner, PortID _id) | |
| Abstract base class for ports. More... | |
| virtual | ~Port () |
| Virtual destructor due to inheritance. More... | |
Protected Attributes | |
| RespPacketQueue | queue |
| A normal packet queue used to store responses. More... | |
| bool | blocked |
| bool | mustSendRetry |
| Protected Attributes inherited from QueuedSlavePort | |
| RespPacketQueue & | respQueue |
| Packet queue used to store outgoing responses. More... | |
| Protected Attributes inherited from BaseSlavePort | |
| BaseMasterPort * | _baseMasterPort |
| 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... | |
| MemObject & | owner |
| A reference to the MemObject that owns this port. More... | |
Private Member Functions | |
| void | processSendRetry () |
Private Attributes | |
| EventWrapper< CacheSlavePort,&CacheSlavePort::processSendRetry > | sendRetryEvent |
A cache slave 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 master).
In addition, it has the functionality to block the port for incoming requests. If blocked, the port will issue a retry once unblocked.
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protected |
| void BaseCache::CacheSlavePort::clearBlocked | ( | ) |
Return to normal operation and accept new requests.
Definition at line 116 of file base.cc.
References BaseCache::blocked, curTick(), and DPRINTF.
Referenced by BaseCache::clearBlocked().
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private |
| void BaseCache::CacheSlavePort::setBlocked | ( | ) |
Do not accept any new requests.
Definition at line 101 of file base.cc.
References blocked, EventManager::deschedule(), DPRINTF, mustSendRetry, Port::owner, and sendRetryEvent.
Referenced by BaseCache::setBlocked().
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protected |
Definition at line 172 of file base.hh.
Referenced by isBlocked(), and setBlocked().
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protected |
Definition at line 174 of file base.hh.
Referenced by setBlocked().
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protected |
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private |
Definition at line 181 of file base.hh.
Referenced by setBlocked().