typedef std::list<Range<Addr> > AddrRangeList;
typedef std::list<Range<Addr> >::iterator AddrRangeIter;
+class MemObject;
+
/**
* Ports are used to interface memory objects to
* each other. They will always come in pairs, and we refer to the other
memory objects. */
Port *peer;
+ /** A pointer to the MemObject that owns this port. This may not be set. */
+ MemObject *owner;
+
public:
Port()
- : peer(NULL)
+ : peer(NULL), owner(NULL)
{ }
/**
*
* @param _name Port name for DPRINTF output. Should include name
* of memory system object to which the port belongs.
+ * @param _owner Pointer to the MemObject that owns this port.
+ * Will not necessarily be set.
*/
- Port(const std::string &_name)
- : portName(_name), peer(NULL)
+ Port(const std::string &_name, MemObject *_owner = NULL)
+ : portName(_name), peer(NULL), owner(_owner)
{ }
/** Return port name (for DPRINTF). */
/** Holds the ports status. Currently just that a range recomputation needs
* to be done. */
enum Status {
- RangeChange,
- SnoopSquash
+ RangeChange
};
void setName(const std::string &name)
{ portName = name; }
- /** Function to set the pointer for the peer port.
- @todo should be called by the configuration stuff (python).
- */
- void setPeer(Port *port);
+ /** Function to set the pointer for the peer port. */
+ virtual void setPeer(Port *port);
- /** Function to set the pointer for the peer port.
- @todo should be called by the configuration stuff (python).
- */
+ /** Function to get the pointer to the peer port. */
Port *getPeer() { return peer; }
+ /** Function to set the owner of this port. */
+ void setOwner(MemObject *_owner) { owner = _owner; }
+
+ /** Function to return the owner of this port. */
+ MemObject *getOwner() { return owner; }
+
+ /** Inform the peer port to delete itself and notify it's owner about it's
+ * demise. */
+ void removeConn();
+
+
protected:
/** These functions are protected because they should only be
* called by a peer port, never directly by any outside object. */
/** Called to recive a timing call from the peer port. */
- virtual bool recvTiming(Packet *pkt) = 0;
+ virtual bool recvTiming(PacketPtr pkt) = 0;
/** Called to recive a atomic call from the peer port. */
- virtual Tick recvAtomic(Packet *pkt) = 0;
+ virtual Tick recvAtomic(PacketPtr pkt) = 0;
/** Called to recive a functional call from the peer port. */
- virtual void recvFunctional(Packet *pkt) = 0;
+ virtual void recvFunctional(PacketPtr pkt) = 0;
/** Called to recieve a status change from the peer port. */
virtual void recvStatusChange(Status status) = 0;
/** Called by a peer port in order to determine the block size of the
device connected to this port. It sometimes doesn't make sense for
- this function to be called, a DMA interface doesn't really have a
- block size, so it is defaulted to a panic.
+ this function to be called, so it just returns 0. Anytthing that is
+ concerned with the size should just ignore that.
*/
- virtual int deviceBlockSize() { panic("??"); }
+ virtual int deviceBlockSize() { return 0; }
/** The peer port is requesting us to reply with a list of the ranges we
are responsible for.
@param snoop is a list of ranges snooped
*/
virtual void getDeviceAddressRanges(AddrRangeList &resp,
- AddrRangeList &snoop)
+ bool &snoop)
{ panic("??"); }
public:
case a cache has a higher priority request come in while waiting for
the bus to arbitrate.
*/
- bool sendTiming(Packet *pkt) { return peer->recvTiming(pkt); }
+ bool sendTiming(PacketPtr pkt) { return peer->recvTiming(pkt); }
/** Function called by the associated device to send an atomic
* access, an access in which the data is moved and the state is
* updated in one cycle, without interleaving with other memory
* accesses. Returns estimated latency of access.
*/
- Tick sendAtomic(Packet *pkt)
+ Tick sendAtomic(PacketPtr pkt)
{ return peer->recvAtomic(pkt); }
/** Function called by the associated device to send a functional access,
memory system, without affecting the current state of any block or
moving the block.
*/
- void sendFunctional(Packet *pkt)
+ void sendFunctional(PacketPtr pkt)
{ return peer->recvFunctional(pkt); }
/** Called by the associated device to send a status change to the device
/** Called by the associated device if it wishes to find out the address
ranges connected to the peer ports devices.
*/
- void getPeerAddressRanges(AddrRangeList &resp, AddrRangeList &snoop)
+ void getPeerAddressRanges(AddrRangeList &resp, bool &snoop)
{ peer->getDeviceAddressRanges(resp, snoop); }
/** This function is a wrapper around sendFunctional()
/** Internal helper function for read/writeBlob().
*/
- void blobHelper(Addr addr, uint8_t *p, int size, Packet::Command cmd);
+ void blobHelper(Addr addr, uint8_t *p, int size, MemCmd cmd);
};
/** A simple functional port that is only meant for one way communication to
class FunctionalPort : public Port
{
public:
- FunctionalPort(const std::string &_name)
- : Port(_name)
+ FunctionalPort(const std::string &_name, MemObject *_owner = NULL)
+ : Port(_name, _owner)
{}
protected:
- virtual bool recvTiming(Packet *pkt) { panic("FuncPort is UniDir"); }
- virtual Tick recvAtomic(Packet *pkt) { panic("FuncPort is UniDir"); }
- virtual void recvFunctional(Packet *pkt) { panic("FuncPort is UniDir"); }
+ virtual bool recvTiming(PacketPtr pkt) { panic("FuncPort is UniDir");
+ M5_DUMMY_RETURN }
+ virtual Tick recvAtomic(PacketPtr pkt) { panic("FuncPort is UniDir");
+ M5_DUMMY_RETURN }
+ virtual void recvFunctional(PacketPtr pkt) { panic("FuncPort is UniDir"); }
virtual void recvStatusChange(Status status) {}
public:
projects / gem5.git / blobdiff