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-
-/*
- * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
- * 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.
- */
-
-/*
- * $Id$
- *
- * Description:
- *
- */
-
-#ifndef OpalInterface_H
-#define OpalInterface_H
-
-/*------------------------------------------------------------------------*/
-/* Includes */
-/*------------------------------------------------------------------------*/
-
-#include "Global.hh"
-#include "Driver.hh"
-#include "mf_api.hh"
-#include "CacheRequestType.hh"
-
-/*------------------------------------------------------------------------*/
-/* Class declaration(s) */
-/*------------------------------------------------------------------------*/
-
-class System;
-class TransactionInterfaceManager;
-class Sequencer;
-
-/**
- * the processor model (opal) calls these OpalInterface APIs to access
- * the memory hierarchy (ruby).
- * @see pseq_t
- * @author cmauer
- * @version $Id$
- */
-class OpalInterface : public Driver {
-public:
- // Constructors
- OpalInterface(System* sys_ptr);
-
- // Destructor
- // ~OpalInterface();
-
- integer_t getInstructionCount(int procID) const;
- void hitCallback( NodeID proc, SubBlock& data, CacheRequestType type, int thread );
- void printStats(ostream& out) const;
- void clearStats();
- void printConfig(ostream& out) const;
- void print(ostream& out) const;
-
- integer_t readPhysicalMemory(int procID, physical_address_t address,
- int len );
-
- void writePhysicalMemory( int procID, physical_address_t address,
- integer_t value, int len );
- uint64 getOpalTime(int procID) const;
-
- // for WATTCH power
- void incrementL2Access(int procID) const;
- void incrementPrefetcherAccess(int procID, int num_prefetches, int isinstr) const;
-
- // notifies Opal of an L2 miss
- void notifyL2Miss(int procID, physical_address_t physicalAddr, OpalMemop_t type, int tagexists) const;
-
- void printDebug();
-
- /// The static opalinterface instance
- static OpalInterface *inst;
-
- /// static methods
- static int getNumberOutstanding(int cpuNumber);
- static int getNumberOutstandingDemand(int cpuNumber);
- static int getNumberOutstandingPrefetch( int cpuNumber );
-
- /* returns true if the sequencer is able to handle more requests.
- This implements "back-pressure" by which the processor knows
- not to issue more requests if the network or cache's limits are reached.
- */
- static int isReady( int cpuNumber, la_t logicalAddr, pa_t physicalAddr, OpalMemop_t typeOfRequest, int thread );
-
- /*
- makeRequest performs the coherence transactions necessary to get the
- physical address in the cache with the correct permissions. More than
- one request can be outstanding to ruby, but only one per block address.
- The size of the cache line is defined to Intf_CacheLineSize.
- When a request is finished (e.g. the cache contains physical address),
- ruby calls completedRequest(). No request can be bigger than
- Opal_CacheLineSize. It is illegal to request non-aligned memory
- locations. A request of size 2 must be at an even byte, a size 4 must
- be at a byte address half-word aligned, etc. Requests also can't cross a
- cache-line boundaries.
- */
- static void makeRequest(int cpuNumber, la_t logicalAddr, pa_t physicalAddr,
- int requestSize, OpalMemop_t typeOfRequest,
- la_t virtualPC, int isPriv, int thread);
-
- /* prefetch a given block...
- */
- static void makePrefetch(int cpuNumber, la_t logicalAddr, pa_t physicalAddr,
- int requestSize, OpalMemop_t typeOfRequest,
- la_t virtualPC, int isPriv, int thread);
-
- /*
- * request data from the cache, even if it's state is "Invalid".
- */
- static int staleDataRequest( int cpuNumber, pa_t physicalAddr,
- int requestSize, int8 *buffer );
-
- /* notify ruby of opal's status
- */
- static void notify( int status );
-
- /*
- * advance ruby one cycle
- */
- static void advanceTime( void );
-
- /*
- * return ruby's cycle count.
- */
- static unsigned long long getTime( void );
-
- /* prints Ruby's outstanding request table */
- static void printProgress(int cpuNumber);
-
- /*
- * initialize / install the inter-module interface
- */
- static void installInterface( mf_ruby_api_t *api );
-
- /*
- * Test if opal is loaded or not
- */
- static bool isOpalLoaded( void );
-
- /*
- * query opal for its api
- */
- void queryOpalInterface( void );
-
- /*
- * remove the opal interface (opal is unloaded).
- */
- void removeOpalInterface( void );
-
- /*
- * set the opal interface (used if stand-alone testing)
- */
- void setOpalInterface( mf_opal_api_t *opal_intf ) {
- m_opal_intf = opal_intf;
- }
-
- /**
- * Signal an abort
- */
- //void abortCallback(NodeID proc);
-
-private:
- // Private Methods
-
- // Private copy constructor and assignment operator
- OpalInterface(const OpalInterface& obj);
- OpalInterface& operator=(const OpalInterface& obj);
-
- // Data Members (m_ prefix)
- mf_opal_api_t *m_opal_intf;
- Time m_simicsStartTime;
-
- static int s_advance_counter;
-};
-
-// Output operator declaration
-ostream& operator<<(ostream& out, const OpalInterface& obj);
-
-// ******************* Definitions *******************
-
-// Output operator definition
-extern inline
-ostream& operator<<(ostream& out, const OpalInterface& obj)
-{
-// obj.print(out);
- out << flush;
- return out;
-}
-
-#endif // OpalInterface_H