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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: Sequencer.h 1.70 2006/09/27 14:56:41-05:00 bobba@s1-01.cs.wisc.edu $
*
* Description:
*
*/
#ifndef SEQUENCER_H
#define SEQUENCER_H
#include "mem/ruby/common/Global.hh"
#include "mem/ruby/config/RubyConfig.hh"
#include "mem/ruby/common/Consumer.hh"
#include "mem/protocol/CacheRequestType.hh"
#include "mem/protocol/AccessModeType.hh"
#include "mem/protocol/GenericMachineType.hh"
#include "mem/protocol/PrefetchBit.hh"
#include "mem/gems_common/Map.hh"
#include "mem/packet.hh"
class DataBlock;
class AbstractChip;
class CacheMsg;
class Address;
class MachineID;
class Sequencer : public Consumer {
public:
// Constructors
Sequencer(AbstractChip* chip_ptr, int version);
// Destructor
~Sequencer();
// Public Methods
void wakeup(); // Used only for deadlock detection
static void printConfig(ostream& out);
// returns total number of outstanding request (includes prefetches)
int getNumberOutstanding();
// return only total number of outstanding demand requests
int getNumberOutstandingDemand();
// return only total number of outstanding prefetch requests
int getNumberOutstandingPrefetch();
// remove load/store request from queue
void removeLoadRequest(const Address & addr, int thread);
void removeStoreRequest(const Address & addr, int thread);
void printProgress(ostream& out) const;
// returns a pointer to the request in the request tables
CacheMsg & getReadRequest( const Address & addr, int thread );
CacheMsg & getWriteRequest( const Address & addr, int thread );
void writeCallback(const Address& address, DataBlock& data);
void readCallback(const Address& address, DataBlock& data);
void writeCallback(const Address& address);
void readCallback(const Address& address);
void writeCallback(const Address& address, DataBlock& data, GenericMachineType respondingMach, PrefetchBit pf, int thread);
void readCallback(const Address& address, DataBlock& data, GenericMachineType respondingMach, PrefetchBit pf, int thread);
void writeCallback(const Address& address, DataBlock& data, GenericMachineType respondingMach, int thread);
void readCallback(const Address& address, DataBlock& data, GenericMachineType respondingMach, int thread);
// returns the thread ID of the request
int getRequestThreadID(const Address & addr);
// returns the physical address of the request
Address getRequestPhysicalAddress(const Address & lineaddr);
// returns whether a request is a prefetch request
bool isPrefetchRequest(const Address & lineaddr);
//notifies driver of debug print
void printDebug();
// called by Tester or Simics
void makeRequest(const Packet* pkt, void* data);
void makeRequest(const CacheMsg& request); // depricate this function
bool doRequest(const CacheMsg& request);
void issueRequest(const CacheMsg& request);
bool isReady(const Packet* pkt) const;
bool isReady(const CacheMsg& request) const; // depricate this function
bool empty() const;
void resetRequestTime(const Address& addr, int thread);
Address getLogicalAddressOfRequest(Address address, int thread);
AccessModeType getAccessModeOfRequest(Address address, int thread);
//uint64 getSequenceNumberOfRequest(Address addr, int thread);
void print(ostream& out) const;
void checkCoherence(const Address& address);
bool getRubyMemoryValue(const Address& addr, char* value, unsigned int size_in_bytes);
bool setRubyMemoryValue(const Address& addr, char *value, unsigned int size_in_bytes);
void removeRequest(const CacheMsg& request);
private:
// Private Methods
bool tryCacheAccess(const Address& addr, CacheRequestType type, const Address& pc, AccessModeType access_mode, int size, DataBlock*& data_ptr);
// void conflictCallback(const CacheMsg& request, GenericMachineType respondingMach, int thread);
void hitCallback(const CacheMsg& request, DataBlock& data, GenericMachineType respondingMach, int thread);
bool insertRequest(const CacheMsg& request);
// Private copy constructor and assignment operator
Sequencer(const Sequencer& obj);
Sequencer& operator=(const Sequencer& obj);
// Data Members (m_ prefix)
AbstractChip* m_chip_ptr;
// indicates what processor on the chip this sequencer is associated with
int m_version;
// One request table per SMT thread
Map<Address, CacheMsg>** m_writeRequestTable_ptr;
Map<Address, CacheMsg>** m_readRequestTable_ptr;
// Global outstanding request count, across all request tables
int m_outstanding_count;
bool m_deadlock_check_scheduled;
};
// Output operator declaration
ostream& operator<<(ostream& out, const Sequencer& obj);
// ******************* Definitions *******************
// Output operator definition
extern inline
ostream& operator<<(ostream& out, const Sequencer& obj)
{
obj.print(out);
out << flush;
return out;
}
#endif //SEQUENCER_H
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