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/*
* 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.
*
* Authors: Erik Hallnor
* Steve Reinhardt
*/
#ifndef __CPU_MEMTEST_MEMTEST_HH__
#define __CPU_MEMTEST_MEMTEST_HH__
#include <set>
#include "base/statistics.hh"
#include "base/fast_alloc.hh"
#include "params/MemTest.hh"
#include "sim/eventq.hh"
#include "sim/sim_exit.hh"
#include "sim/sim_object.hh"
#include "sim/stats.hh"
#include "mem/mem_object.hh"
#include "mem/port.hh"
class Packet;
class MemTest : public MemObject
{
public:
typedef MemTestParams Params;
MemTest(const Params *p);
virtual void init();
// register statistics
virtual void regStats();
inline Tick ticks(int numCycles) const { return numCycles; }
// main simulation loop (one cycle)
void tick();
virtual Port *getPort(const std::string &if_name, int idx = -1);
/**
* Print state of address in memory system via PrintReq (for
* debugging).
*/
void printAddr(Addr a);
protected:
class TickEvent : public Event
{
private:
MemTest *cpu;
public:
TickEvent(MemTest *c)
: Event(&mainEventQueue, CPU_Tick_Pri), cpu(c) {}
void process() {cpu->tick();}
virtual const char *description() const { return "MemTest tick"; }
};
TickEvent tickEvent;
class CpuPort : public Port
{
MemTest *memtest;
public:
CpuPort(const std::string &_name, MemTest *_memtest)
: Port(_name, _memtest), memtest(_memtest)
{ }
bool snoopRangeSent;
protected:
virtual bool recvTiming(PacketPtr pkt);
virtual Tick recvAtomic(PacketPtr pkt);
virtual void recvFunctional(PacketPtr pkt);
virtual void recvStatusChange(Status status);
virtual void recvRetry();
virtual void getDeviceAddressRanges(AddrRangeList &resp,
bool &snoop)
{ resp.clear(); snoop = false; }
};
CpuPort cachePort;
CpuPort funcPort;
bool snoopRangeSent;
class MemTestSenderState : public Packet::SenderState, public FastAlloc
{
public:
/** Constructor. */
MemTestSenderState(uint8_t *_data)
: data(_data)
{ }
// Hold onto data pointer
uint8_t *data;
};
PacketPtr retryPkt;
bool accessRetry;
unsigned size; // size of testing memory region
unsigned percentReads; // target percentage of read accesses
unsigned percentFunctional; // target percentage of functional accesses
unsigned percentUncacheable;
int id;
std::set<unsigned> outstandingAddrs;
unsigned blockSize;
Addr blockAddrMask;
Addr blockAddr(Addr addr)
{
return (addr & ~blockAddrMask);
}
Addr traceBlockAddr;
Addr baseAddr1; // fix this to option
Addr baseAddr2; // fix this to option
Addr uncacheAddr;
unsigned progressInterval; // frequency of progress reports
Tick nextProgressMessage; // access # for next progress report
unsigned percentSourceUnaligned;
unsigned percentDestUnaligned;
Tick noResponseCycles;
uint64_t numReads;
uint64_t maxLoads;
bool atomic;
Stats::Scalar<> numReadsStat;
Stats::Scalar<> numWritesStat;
Stats::Scalar<> numCopiesStat;
// called by MemCompleteEvent::process()
void completeRequest(PacketPtr pkt);
void sendPkt(PacketPtr pkt);
void doRetry();
friend class MemCompleteEvent;
};
#endif // __CPU_MEMTEST_MEMTEST_HH__
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