The PioPort class is a programmed i/o port that all devices that are sensitive to an address range use. More...
#include <io_device.hh>
Inheritance diagram for PioPort< Device >:
Public Member Functions | |
| PioPort (Device *dev) | |
 Public Member Functions inherited from SimpleTimingPort | |
| SimpleTimingPort (const std::string &name, SimObject *owner) | |
| Create a new SimpleTimingPort that relies on a packet queue to hold responses, and implements recvTimingReq and recvFunctional through calls to recvAtomic. More... | |
| virtual | ~SimpleTimingPort () |
| 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 | |
| Tick | recvAtomic (PacketPtr pkt) override |
| Receive an atomic 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 SimpleTimingPort | |
| void | recvFunctional (PacketPtr pkt) |
| Implemented using recvAtomic(). More... | |
| bool | recvTimingReq (PacketPtr pkt) |
| Implemented using recvAtomic(). 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... | |
Protected Attributes | |
| Device * | device |
| The device that this port serves. More... | |
| Protected Attributes inherited from SimpleTimingPort | |
| std::unique_ptr< Packet > | pendingDelete |
| Upstream caches need this packet until true is returned, so hold it for deletion until a subsequent call. More... | |
| 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... | |
Detailed Description
template<class Device>
class PioPort< Device >
The PioPort class is a programmed i/o port that all devices that are sensitive to an address range use.
The port takes all the memory access types and roles them into one read() and write() call that the device must respond to. The device must also provide getAddrRanges() function with which it returns the address ranges it is interested in.
Definition at line 60 of file io_device.hh.
Constructor & Destructor Documentation
◆ PioPort()
Definition at line 87 of file io_device.hh.
Member Function Documentation
◆ getAddrRanges()
template<class Device >
|
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.
- Returns
- a list of ranges responded to
Implements ResponsePort.
Definition at line 81 of file io_device.hh.
◆ recvAtomic()
template<class Device >
|
inlineoverrideprotectedvirtual |
Receive an atomic request packet from the peer.
Implements SimpleTimingPort.
Definition at line 67 of file io_device.hh.
Member Data Documentation
◆ device
template<class Device >
|
protected |
The device that this port serves.
Definition at line 64 of file io_device.hh.
Referenced by PioPort< X86ISA::Interrupts >::getAddrRanges(), and PioPort< X86ISA::Interrupts >::recvAtomic().
The documentation for this class was generated from the following file:
- dev/io_device.hh