KVM memory port. More...
#include <base.hh>
Inheritance diagram for BaseKvmCPU::KVMCpuPort:
Public Member Functions | |
| KVMCpuPort (const std::string &_name, BaseKvmCPU *_cpu) | |
| Tick | submitIO (PacketPtr pkt) |
| Interface to send Atomic or Timing IO request. More... | |
| Status | nextIOState () const |
| Returns next valid state after one or more IO accesses. More... | |
 Public Member Functions inherited from RequestPort | |
| RequestPort (const std::string &name, SimObject *_owner, PortID id=InvalidPortID) | |
| Request port. More... | |
| virtual | ~RequestPort () |
| void | bind (Port &peer) override |
| Bind this request port to a response port. More... | |
| void | unbind () override |
| Unbind this request port and the associated response port. More... | |
| virtual bool | isSnooping () const |
| Determine if this request port is snooping or not. More... | |
| AddrRangeList | getAddrRanges () const |
| Get the address ranges of the connected responder port. More... | |
| void | printAddr (Addr a) |
| Inject a PrintReq for the given address to print the state of that address throughout the memory system. More... | |
| Tick | sendAtomic (PacketPtr pkt) |
| Send an atomic request packet, where the data is moved and the state is updated in zero time, without interleaving with other memory accesses. More... | |
| Tick | sendAtomicBackdoor (PacketPtr pkt, MemBackdoorPtr &backdoor) |
| Send an atomic request packet like above, but also request a backdoor to the data being accessed. More... | |
| void | sendFunctional (PacketPtr pkt) const |
| Send a functional 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 | sendTimingReq (PacketPtr pkt) |
| Attempt to send a timing request to the responder port by calling its corresponding receive function. More... | |
| bool | tryTiming (PacketPtr pkt) const |
| Check if the responder can handle a timing request. More... | |
| bool | sendTimingSnoopResp (PacketPtr pkt) |
| Attempt to send a timing snoop response packet to the response port by calling its corresponding receive function. More... | |
| virtual void | sendRetryResp () |
| Send a retry to the response port that previously attempted a sendTimingResp to this request 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 | recvTimingResp (PacketPtr pkt) override |
| Receive a timing response from the peer. More... | |
| void | recvReqRetry () override |
| Called by the peer if sendTimingReq was called on this peer (causing recvTimingReq to be called on the peer) and was unsuccessful. More... | |
| Protected Member Functions inherited from RequestPort | |
| virtual void | recvRangeChange () |
| Called to receive an address range change from the peer response port. More... | |
| Tick | recvAtomicSnoop (PacketPtr pkt) override |
| Default implementations. More... | |
| void | recvFunctionalSnoop (PacketPtr pkt) override |
| Receive a functional snoop request packet from the peer. More... | |
| void | recvTimingSnoopReq (PacketPtr pkt) override |
| Receive a timing snoop request from the peer. More... | |
| void | recvRetrySnoopResp () override |
| Called by the peer if sendTimingSnoopResp was called on this protocol (causing recvTimingSnoopResp to be called on the peer) and was unsuccessful. 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 AtomicRequestProtocol | |
| Tick | send (AtomicResponseProtocol *peer, PacketPtr pkt) |
| Send an atomic request packet, where the data is moved and the state is updated in zero time, without interleaving with other memory accesses. More... | |
| Tick | sendBackdoor (AtomicResponseProtocol *peer, PacketPtr pkt, MemBackdoorPtr &backdoor) |
| Send an atomic request packet like above, but also request a backdoor to the data being accessed. More... | |
| Protected Member Functions inherited from TimingRequestProtocol | |
| bool | sendReq (TimingResponseProtocol *peer, PacketPtr pkt) |
| Attempt to send a timing request to the peer by calling its corresponding receive function. More... | |
| bool | trySend (TimingResponseProtocol *peer, PacketPtr pkt) const |
| Check if the peer can handle a timing request. More... | |
| bool | sendSnoopResp (TimingResponseProtocol *peer, PacketPtr pkt) |
| Attempt to send a timing snoop response packet to it's peer by calling its corresponding receive function. More... | |
| void | sendRetryResp (TimingResponseProtocol *peer) |
| Send a retry to the peer that previously attempted a sendTimingResp to this protocol and failed. More... | |
| Protected Member Functions inherited from FunctionalRequestProtocol | |
| void | send (FunctionalResponseProtocol *peer, PacketPtr pkt) const |
| Send a functional 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 | |
| BaseKvmCPU * | cpu |
| KVM cpu pointer for finishMMIOPending() callback. More... | |
| std::queue< PacketPtr > | pendingMMIOPkts |
| Pending MMIO packets. More... | |
| unsigned int | activeMMIOReqs |
| Number of MMIO requests in flight. More... | |
| Protected Attributes inherited from RequestPort | |
| 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... | |
Detailed Description
KVM memory port.
Uses default RequestPort behavior and provides an interface for KVM to transparently submit atomic or timing requests.
Constructor & Destructor Documentation
◆ KVMCpuPort()
|
inline |
Member Function Documentation
◆ nextIOState()
| BaseKvmCPU::Status BaseKvmCPU::KVMCpuPort::nextIOState | ( | ) | const |
Returns next valid state after one or more IO accesses.
Definition at line 164 of file base.cc.
References activeMMIOReqs, pendingMMIOPkts, BaseKvmCPU::RunningMMIOPending, and BaseKvmCPU::RunningServiceCompletion.
Referenced by BaseKvmCPU::handleKvmExit().
◆ recvReqRetry()
|
overrideprotectedvirtual |
Called by the peer if sendTimingReq was called on this peer (causing recvTimingReq to be called on the peer) and was unsuccessful.
Implements TimingRequestProtocol.
Definition at line 206 of file base.cc.
References DPRINTF.
◆ recvTimingResp()
|
overrideprotectedvirtual |
Receive a timing response from the peer.
Implements TimingRequestProtocol.
Definition at line 189 of file base.cc.
References DPRINTF.
◆ submitIO()
Interface to send Atomic or Timing IO request.
Assumes that the pkt and corresponding req have been dynamically allocated and deletes them both if the system is in atomic mode.
Definition at line 171 of file base.cc.
Referenced by BaseKvmCPU::doMMIOAccess(), and X86KvmCPU::handleKvmExitIO().
Member Data Documentation
◆ activeMMIOReqs
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protected |
Number of MMIO requests in flight.
Definition at line 602 of file base.hh.
Referenced by nextIOState().
◆ cpu
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protected |
KVM cpu pointer for finishMMIOPending() callback.
◆ pendingMMIOPkts
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protected |
The documentation for this class was generated from the following files: