memtest.hh revision 2 
1/*
2 * Copyright (c) 2003 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
29#ifndef __MEMTEST_HH__
30#define __MEMTEST_HH__
31
32#include "sim_object.hh"
33#include "mem_interface.hh"
34#include "functional_memory.hh"
35#include "base_cpu.hh"
36#include "exec_context.hh"
37
38#include "statistics.hh"
39#include "sim_stats.hh"
40
41class MemTest : public BaseCPU
42{
43  public:
44
45    MemTest(const std::string &name,
46            MemInterface *_cache_interface,
47            FunctionalMemory *main_mem,
48            FunctionalMemory *check_mem,
49            unsigned _memorySize,
50            unsigned _percentReads,
51            unsigned _percentUncacheable,
52            unsigned _maxReads,
53            unsigned _progressInterval,
54            Addr _traceAddr);
55
56    // register statistics
57    virtual void regStats();
58    // main simulation loop (one cycle)
59    void tick();
60
61  protected:
62    class TickEvent : public Event
63    {
64      private:
65        MemTest *cpu;
66      public:
67        TickEvent(MemTest *c)
68            : Event(&mainEventQueue, 100), cpu(c) {}
69        void process() {cpu->tick();}
70        virtual const char *description() { return "tick event"; }
71    };
72
73    TickEvent tickEvent;
74
75    MemInterface *cacheInterface;
76    FunctionalMemory *mainMem;
77    FunctionalMemory *checkMem;
78    ExecContext *xc;
79
80    unsigned size;		// size of testing memory region
81
82    unsigned percentReads;	// target percentage of read accesses
83    unsigned percentUncacheable;
84
85    Tick maxReads;		// max # of reads to perform (then quit)
86
87    unsigned blockSize;
88
89    Addr blockAddrMask;
90
91    Addr blockAddr(Addr addr)
92    {
93        return (addr & ~blockAddrMask);
94    }
95
96    Addr traceBlockAddr;
97
98    Addr baseAddr1;		// fix this to option
99    Addr baseAddr2;		// fix this to option
100    Addr uncacheAddr;
101
102    unsigned progressInterval;	// frequency of progress reports
103    Tick nextProgressMessage;	// access # for next progress report
104
105    Tick noResponseCycles;
106
107    Statistics::Scalar<long long int> numReads;
108    Statistics::Scalar<long long int> numWrites;
109    Statistics::Scalar<long long int> numCopies;
110
111    // called by MemCompleteEvent::process()
112    void completeRequest(MemReqPtr req, uint8_t *data);
113
114    friend class MemCompleteEvent;
115};
116
117
118class MemCompleteEvent : public Event
119{
120    MemReqPtr req;
121    uint8_t *data;
122    MemTest *tester;
123
124  public:
125
126    MemCompleteEvent(MemReqPtr _req, uint8_t *_data, MemTest *_tester)
127        : Event(&mainEventQueue),
128          req(_req), data(_data), tester(_tester)
129    {
130    }
131
132    void process();
133
134    virtual const char *description();
135};
136
137#endif // __MEMTEST_HH__
138
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141