944646124e
functions, the send/recv*Query naming seems awkward. Also create a typedef for AddrRangeList. --HG-- extra : convert_revision : dd0ff3fad06ec329c82c199700d0a6264f1271d3
128 lines
4.5 KiB
C++
128 lines
4.5 KiB
C++
/*
|
|
* Copyright (c) 2002-2005 The Regents of The University of Michigan
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met: redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer;
|
|
* redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution;
|
|
* neither the name of the copyright holders nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/**
|
|
* @file Decleration of a bus object.
|
|
*/
|
|
|
|
#ifndef __MEM_BUS_HH__
|
|
#define __MEM_BUS_HH__
|
|
|
|
#include <string>
|
|
#include <list>
|
|
#include <inttypes.h>
|
|
|
|
#include "base/range.hh"
|
|
#include "mem/mem_object.hh"
|
|
#include "mem/packet.hh"
|
|
#include "mem/port.hh"
|
|
#include "mem/request.hh"
|
|
|
|
class Bus : public MemObject
|
|
{
|
|
/** Function called by the port when the bus is recieving a Timing
|
|
transaction.*/
|
|
bool recvTiming(Packet &pkt, int id);
|
|
|
|
/** Function called by the port when the bus is recieving a Atomic
|
|
transaction.*/
|
|
Tick recvAtomic(Packet &pkt, int id);
|
|
|
|
/** Function called by the port when the bus is recieving a Functional
|
|
transaction.*/
|
|
void recvFunctional(Packet &pkt, int id);
|
|
|
|
/** Function called by the port when the bus is recieving a status change.*/
|
|
void recvStatusChange(Port::Status status, int id);
|
|
|
|
/** Decleration of the buses port type, one will be instantiated for each
|
|
of the interfaces connecting to the bus. */
|
|
class BusPort : public Port
|
|
{
|
|
/** A pointer to the bus to which this port belongs. */
|
|
Bus *bus;
|
|
|
|
/** A id to keep track of the intercafe ID this port is connected to. */
|
|
int id;
|
|
|
|
public:
|
|
|
|
/** Constructor for the BusPort.*/
|
|
BusPort(Bus *_bus, int _id)
|
|
: bus(_bus), id(_id)
|
|
{ }
|
|
|
|
protected:
|
|
|
|
/** When reciving a timing request from the peer port (at id),
|
|
pass it to the bus. */
|
|
virtual bool recvTiming(Packet &pkt)
|
|
{ return bus->recvTiming(pkt, id); }
|
|
|
|
/** When reciving a Atomic requestfrom the peer port (at id),
|
|
pass it to the bus. */
|
|
virtual Tick recvAtomic(Packet &pkt)
|
|
{ return bus->recvAtomic(pkt, id); }
|
|
|
|
/** When reciving a Functional requestfrom the peer port (at id),
|
|
pass it to the bus. */
|
|
virtual void recvFunctional(Packet &pkt)
|
|
{ bus->recvFunctional(pkt, id); }
|
|
|
|
/** When reciving a status changefrom the peer port (at id),
|
|
pass it to the bus. */
|
|
virtual void recvStatusChange(Status status)
|
|
{ bus->recvStatusChange(status, id); }
|
|
|
|
// This should return all the 'owned' addresses that are
|
|
// downstream from this bus, yes? That is, the union of all
|
|
// the 'owned' address ranges of all the other interfaces on
|
|
// this bus...
|
|
virtual void addressRanges(AddrRangeList &range_list, bool &owner);
|
|
};
|
|
|
|
/** A count of the number of interfaces connected to this bus. */
|
|
int num_interfaces;
|
|
|
|
/** An array of pointers to the peer port interfaces
|
|
connected to this bus.*/
|
|
Port *interfaces[];
|
|
|
|
public:
|
|
|
|
/** A function used to return the port associated with this bus object. */
|
|
virtual Port *getPort(const char *if_name)
|
|
{
|
|
// if_name ignored? forced to be empty?
|
|
int id = num_interfaces++;
|
|
interfaces[id] = new BusPort(this, id);
|
|
return interfaces[id];
|
|
}
|
|
};
|
|
|
|
#endif //__MEM_BUS_HH__
|