A queued port is a port that has an infinite queue for outgoing packets and thus decouples the module that wants to send request/responses from the flow control (retry mechanism) of the port. More...

#include <qport.hh>

Inheritance diagram for QueuedSlavePort:

Public Member Functions
	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
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 &	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...

Detailed Description

A queued port is a port that has an infinite queue for outgoing packets and thus decouples the module that wants to send request/responses from the flow control (retry mechanism) of the port.

A queued port can be used by both a master and a slave. The queue is a parameter to allow tailoring of the queue implementation (used in the cache).

Definition at line 59 of file qport.hh.

Constructor & Destructor Documentation

QueuedSlavePort::QueuedSlavePort	(	const std::string &	name,
		MemObject *	owner,
		RespPacketQueue &	resp_queue,
		PortID	id = `InvalidPortID`
	)

inline

Create a QueuedPort with a given name, owner, and a supplied implementation of a packet queue.

The external definition of the queue enables e.g. the cache to implement a specific queue behaviuor in a subclass, and provide the latter to the QueuePort constructor.

Definition at line 78 of file qport.hh.

virtual QueuedSlavePort::~QueuedSlavePort ( )

inlinevirtual

Definition at line 83 of file qport.hh.

Member Function Documentation

bool QueuedSlavePort::checkFunctional ( PacketPtr pkt )

inline

Check the list of buffered packets against the supplied functional request.

Definition at line 96 of file qport.hh.

References PacketQueue::checkFunctional(), and respQueue.

Referenced by Cache::functionalAccess().

void QueuedSlavePort::recvRespRetry ( )

inlineprotectedvirtual

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.

Implements SlavePort.

Definition at line 67 of file qport.hh.

References respQueue, and PacketQueue::retry().