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gem5
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gem5
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KVM memory port. More...
#include <base.hh>
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 MasterPort | |
| MasterPort (const std::string &name, MemObject *owner, PortID id=InvalidPortID) | |
| Master port. More... | |
| virtual | ~MasterPort () |
| void | bind (BaseSlavePort &slave_port) |
| Bind this master port to a slave port. More... | |
| void | unbind () |
| Unbind this master port and the associated slave port. 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... | |
| void | sendFunctional (PacketPtr pkt) |
| 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 slave port by calling its corresponding receive function. More... | |
| bool | sendTimingSnoopResp (PacketPtr pkt) |
| Attempt to send a timing snoop response packet to the slave port by calling its corresponding receive function. More... | |
| virtual void | sendRetryResp () |
| Send a retry to the slave port that previously attempted a sendTimingResp to this master port and failed. More... | |
| virtual bool | isSnooping () const |
| Determine if this master port is snooping or not. More... | |
| AddrRangeList | getAddrRanges () const |
| Get the address ranges of the connected slave 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... | |
| Public Member Functions inherited from BaseMasterPort | |
| BaseSlavePort & | getSlavePort () 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 | |
| bool | recvTimingResp (PacketPtr pkt) override |
| Receive a timing response from the slave port. More... | |
| void | recvReqRetry () override |
| Called by the slave port if sendTimingReq was called on this master port (causing recvTimingReq to be called on the slave port) and was unsuccesful. More... | |
| Protected Member Functions inherited from MasterPort | |
| virtual Tick | recvAtomicSnoop (PacketPtr pkt) |
| Receive an atomic snoop request packet from the slave port. More... | |
| virtual void | recvFunctionalSnoop (PacketPtr pkt) |
| Receive a functional snoop request packet from the slave port. More... | |
| virtual void | recvTimingSnoopReq (PacketPtr pkt) |
| Receive a timing snoop request from the slave port. More... | |
| virtual void | recvRetrySnoopResp () |
| Called by the slave port if sendTimingSnoopResp was called on this master port (causing recvTimingSnoopResp to be called on the slave port) and was unsuccesful. More... | |
| virtual void | recvRangeChange () |
| Called to receive an address range change from the peer slave port. More... | |
| Protected Member Functions inherited from BaseMasterPort | |
| BaseMasterPort (const std::string &name, MemObject *owner, PortID id=InvalidPortID) | |
| virtual | ~BaseMasterPort () |
| 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 | |
| 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 BaseMasterPort | |
| BaseSlavePort * | _baseSlavePort |
| 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... | |
KVM memory port.
Uses default MasterPort behavior and provides an interface for KVM to transparently submit atomic or timing requests.
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inline |
| BaseKvmCPU::Status BaseKvmCPU::KVMCpuPort::nextIOState | ( | ) | const |
Returns next valid state after one or more IO accesses.
Definition at line 173 of file base.cc.
References activeMMIOReqs, pendingMMIOPkts, BaseKvmCPU::RunningMMIOPending, and BaseKvmCPU::RunningServiceCompletion.
Referenced by BaseKvmCPU::handleKvmExit().
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overrideprotectedvirtual |
Called by the slave port if sendTimingReq was called on this master port (causing recvTimingReq to be called on the slave port) and was unsuccesful.
Implements MasterPort.
Definition at line 217 of file base.cc.
References DPRINTF.
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overrideprotectedvirtual |
Receive a timing response from the slave port.
Implements MasterPort.
Definition at line 199 of file base.cc.
References DPRINTF, and Packet::req.
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 180 of file base.cc.
References Packet::req.
Referenced by BaseKvmCPU::doMMIOAccess(), and X86KvmCPU::handleKvmExitIO().
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protected |
Number of MMIO requests in flight.
Definition at line 594 of file base.hh.
Referenced by nextIOState().
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protected |
KVM cpu pointer for finishMMIOPending() callback.
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protected |