gem5
v20.1.0.0
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Declaration of the non-coherent crossbar CPU-side port type, one will be instantiated for each of the memory-side ports connecting to the crossbar. More...
#include <noncoherent_xbar.hh>
Public Member Functions | |
NoncoherentXBarResponsePort (const std::string &_name, NoncoherentXBar &_xbar, PortID _id) | |
Public Member Functions inherited from 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 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... | |
Protected Member Functions | |
bool | recvTimingReq (PacketPtr pkt) override |
Receive a timing request from the peer. More... | |
Tick | recvAtomic (PacketPtr pkt) override |
Receive an atomic request packet from the peer. More... | |
Tick | recvAtomicBackdoor (PacketPtr pkt, MemBackdoorPtr &backdoor) override |
Receive an atomic request packet from the peer, and optionally provide a backdoor to the data being accessed. More... | |
void | recvFunctional (PacketPtr pkt) override |
Receive a functional request packet from the peer. More... | |
AddrRangeList | getAddrRanges () const override |
Get a list of the non-overlapping address ranges the owner is responsible for. More... | |
Protected Member Functions inherited from 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 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... | |
Private Attributes | |
NoncoherentXBar & | xbar |
A reference to the crossbar to which this port belongs. More... | |
RespPacketQueue | queue |
A normal packet queue used to store responses. More... | |
Additional Inherited Members | |
Protected Attributes inherited from QueuedResponsePort | |
RespPacketQueue & | respQueue |
Packet queue used to store outgoing responses. More... | |
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... | |
Declaration of the non-coherent crossbar CPU-side port type, one will be instantiated for each of the memory-side ports connecting to the crossbar.
Definition at line 82 of file noncoherent_xbar.hh.
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inline |
Definition at line 94 of file noncoherent_xbar.hh.
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inlineoverrideprotectedvirtual |
Get a list of the non-overlapping address ranges the owner is responsible for.
All response ports must override this function and return a populated list with at least one item.
Implements ResponsePort.
Definition at line 127 of file noncoherent_xbar.hh.
References BaseXBar::getAddrRanges(), and xbar.
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inlineoverrideprotectedvirtual |
Receive an atomic request packet from the peer.
Implements AtomicResponseProtocol.
Definition at line 109 of file noncoherent_xbar.hh.
References NoncoherentXBar::recvAtomicBackdoor(), and xbar.
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inlineoverrideprotectedvirtual |
Receive an atomic request packet from the peer, and optionally provide a backdoor to the data being accessed.
Implements AtomicResponseProtocol.
Definition at line 115 of file noncoherent_xbar.hh.
References NoncoherentXBar::recvAtomicBackdoor(), and xbar.
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inlineoverrideprotectedvirtual |
Receive a functional request packet from the peer.
Implements FunctionalResponseProtocol.
Definition at line 121 of file noncoherent_xbar.hh.
References NoncoherentXBar::recvFunctional(), and xbar.
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inlineoverrideprotectedvirtual |
Receive a timing request from the peer.
Implements TimingResponseProtocol.
Definition at line 103 of file noncoherent_xbar.hh.
References NoncoherentXBar::recvTimingReq(), and xbar.
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private |
A normal packet queue used to store responses.
Definition at line 90 of file noncoherent_xbar.hh.
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private |
A reference to the crossbar to which this port belongs.
Definition at line 87 of file noncoherent_xbar.hh.
Referenced by getAddrRanges(), recvAtomic(), recvAtomicBackdoor(), recvFunctional(), and recvTimingReq().