memtest.hh revision 4474 
1/*
2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Erik Hallnor
29 *          Steve Reinhardt
30 */
31
32#ifndef __CPU_MEMTEST_MEMTEST_HH__
33#define __CPU_MEMTEST_MEMTEST_HH__
34
35#include <set>
36
37#include "base/statistics.hh"
38//#include "mem/functional/functional.hh"
39//#include "mem/mem_interface.hh"
40#include "sim/eventq.hh"
41#include "sim/sim_exit.hh"
42#include "sim/sim_object.hh"
43#include "sim/stats.hh"
44#include "mem/mem_object.hh"
45#include "mem/port.hh"
46
47class Packet;
48class MemTest : public MemObject
49{
50  public:
51
52    MemTest(const std::string &name,
53//	    MemInterface *_cache_interface,
54//	    PhysicalMemory *main_mem,
55//	    PhysicalMemory *check_mem,
56            unsigned _memorySize,
57            unsigned _percentReads,
58            unsigned _percentFunctional,
59            unsigned _percentUncacheable,
60            unsigned _progressInterval,
61            unsigned _percentSourceUnaligned,
62            unsigned _percentDestUnaligned,
63            Addr _traceAddr,
64            Counter _max_loads,
65            bool _atomic);
66
67    virtual void init();
68
69    // register statistics
70    virtual void regStats();
71
72    inline Tick cycles(int numCycles) const { return numCycles; }
73
74    // main simulation loop (one cycle)
75    void tick();
76
77    virtual Port *getPort(const std::string &if_name, int idx = -1);
78
79  protected:
80    class TickEvent : public Event
81    {
82      private:
83        MemTest *cpu;
84      public:
85        TickEvent(MemTest *c)
86            : Event(&mainEventQueue, CPU_Tick_Pri), cpu(c) {}
87        void process() {cpu->tick();}
88        virtual const char *description() { return "MemTest tick"; }
89    };
90
91    TickEvent tickEvent;
92
93    class CpuPort : public Port
94    {
95        MemTest *memtest;
96
97      public:
98
99        CpuPort(const std::string &_name, MemTest *_memtest)
100            : Port(_name, _memtest), memtest(_memtest)
101        { }
102
103        bool snoopRangeSent;
104
105      protected:
106
107        virtual bool recvTiming(PacketPtr pkt);
108
109        virtual Tick recvAtomic(PacketPtr pkt);
110
111        virtual void recvFunctional(PacketPtr pkt);
112
113        virtual void recvStatusChange(Status status);
114
115        virtual void recvRetry();
116
117        virtual void getDeviceAddressRanges(AddrRangeList &resp,
118            AddrRangeList &snoop)
119        { resp.clear(); snoop.clear(); snoop.push_back(RangeSize(0,0)); }
120    };
121
122    CpuPort cachePort;
123    CpuPort funcPort;
124
125    bool snoopRangeSent;
126
127    class MemTestSenderState : public Packet::SenderState
128    {
129      public:
130        /** Constructor. */
131        MemTestSenderState(uint8_t *_data)
132            : data(_data)
133        { }
134
135        // Hold onto data pointer
136        uint8_t *data;
137    };
138
139//    Request *dataReq;
140    PacketPtr retryPkt;
141//    MemInterface *cacheInterface;
142//    PhysicalMemory *mainMem;
143//    PhysicalMemory *checkMem;
144//    SimpleThread *thread;
145
146    bool accessRetry;
147
148    unsigned size;		// size of testing memory region
149
150    unsigned percentReads;	// target percentage of read accesses
151    unsigned percentFunctional;	// target percentage of functional accesses
152    unsigned percentUncacheable;
153
154    int id;
155
156    std::set<unsigned> outstandingAddrs;
157
158    unsigned blockSize;
159
160    Addr blockAddrMask;
161
162    Addr blockAddr(Addr addr)
163    {
164        return (addr & ~blockAddrMask);
165    }
166
167    Addr traceBlockAddr;
168
169    Addr baseAddr1;		// fix this to option
170    Addr baseAddr2;		// fix this to option
171    Addr uncacheAddr;
172
173    unsigned progressInterval;	// frequency of progress reports
174    Tick nextProgressMessage;	// access # for next progress report
175
176    unsigned percentSourceUnaligned;
177    unsigned percentDestUnaligned;
178
179    Tick noResponseCycles;
180
181    uint64_t numReads;
182    uint64_t maxLoads;
183
184    bool atomic;
185
186    Stats::Scalar<> numReadsStat;
187    Stats::Scalar<> numWritesStat;
188    Stats::Scalar<> numCopiesStat;
189
190    // called by MemCompleteEvent::process()
191    void completeRequest(PacketPtr pkt);
192
193    void sendPkt(PacketPtr pkt);
194
195    void doRetry();
196
197    friend class MemCompleteEvent;
198};
199
200#endif // __CPU_MEMTEST_MEMTEST_HH__
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