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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>
Public Member Functions | |
| PioPort (PioDevice *dev) | |
 Public Member Functions inherited from SimpleTimingPort | |
| SimpleTimingPort (const std::string &name, MemObject *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 QueuedSlavePort | |
| 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... | |
| 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 | |
| virtual Tick | recvAtomic (PacketPtr pkt) |
| Receive an atomic request packet from the master port. More... | |
| virtual AddrRangeList | getAddrRanges () const |
| 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 QueuedSlavePort | |
| 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 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 | |
| PioDevice * | 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 QueuedSlavePort | |
| 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... | |
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 62 of file io_device.hh.
| PioPort::PioPort | ( | PioDevice * | dev | ) |
Definition at line 50 of file io_device.cc.
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protectedvirtual |
Get a list of the non-overlapping address ranges the owner is responsible for.
All slave ports must override this function and return a populated list with at least one item.
Implements SlavePort.
Definition at line 69 of file io_device.cc.
References device, and PioDevice::getAddrRanges().
Receive an atomic request packet from the master port.
Implements SimpleTimingPort.
Definition at line 56 of file io_device.cc.
References device, Packet::headerDelay, Packet::isError(), Packet::isRead(), Packet::isResponse(), Packet::payloadDelay, PioDevice::read(), and PioDevice::write().
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protected |
The device that this port serves.
Definition at line 66 of file io_device.hh.
Referenced by getAddrRanges(), and recvAtomic().