memtest.hh revision 5606 
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 "base/fast_alloc.hh"
39#include "params/MemTest.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    typedef MemTestParams Params;
52    MemTest(const Params *p);
53
54    virtual void init();
55
56    // register statistics
57    virtual void regStats();
58
59    inline Tick ticks(int numCycles) const { return numCycles; }
60
61    // main simulation loop (one cycle)
62    void tick();
63
64    virtual Port *getPort(const std::string &if_name, int idx = -1);
65
66    /**
67     * Print state of address in memory system via PrintReq (for
68     * debugging).
69     */
70    void printAddr(Addr a);
71
72  protected:
73    class TickEvent : public Event
74    {
75      private:
76        MemTest *cpu;
77
78      public:
79        TickEvent(MemTest *c) : Event(CPU_Tick_Pri), cpu(c) {}
80        void process() { cpu->tick(); }
81        virtual const char *description() const { return "MemTest tick"; }
82    };
83
84    TickEvent tickEvent;
85
86    class CpuPort : public Port
87    {
88        MemTest *memtest;
89
90      public:
91
92        CpuPort(const std::string &_name, MemTest *_memtest)
93            : Port(_name, _memtest), memtest(_memtest)
94        { }
95
96        bool snoopRangeSent;
97
98      protected:
99
100        virtual bool recvTiming(PacketPtr pkt);
101
102        virtual Tick recvAtomic(PacketPtr pkt);
103
104        virtual void recvFunctional(PacketPtr pkt);
105
106        virtual void recvStatusChange(Status status);
107
108        virtual void recvRetry();
109
110        virtual void getDeviceAddressRanges(AddrRangeList &resp,
111                                            bool &snoop)
112        { resp.clear(); snoop = false; }
113    };
114
115    CpuPort cachePort;
116    CpuPort funcPort;
117
118    bool snoopRangeSent;
119
120    class MemTestSenderState : public Packet::SenderState, public FastAlloc
121    {
122      public:
123        /** Constructor. */
124        MemTestSenderState(uint8_t *_data)
125            : data(_data)
126        { }
127
128        // Hold onto data pointer
129        uint8_t *data;
130    };
131
132    PacketPtr retryPkt;
133
134    bool accessRetry;
135
136    unsigned size;              // size of testing memory region
137
138    unsigned percentReads;      // target percentage of read accesses
139    unsigned percentFunctional; // target percentage of functional accesses
140    unsigned percentUncacheable;
141
142    int id;
143
144    std::set<unsigned> outstandingAddrs;
145
146    unsigned blockSize;
147
148    Addr blockAddrMask;
149
150    Addr blockAddr(Addr addr)
151    {
152        return (addr & ~blockAddrMask);
153    }
154
155    Addr traceBlockAddr;
156
157    Addr baseAddr1;             // fix this to option
158    Addr baseAddr2;             // fix this to option
159    Addr uncacheAddr;
160
161    unsigned progressInterval;  // frequency of progress reports
162    Tick nextProgressMessage;   // access # for next progress report
163
164    unsigned percentSourceUnaligned;
165    unsigned percentDestUnaligned;
166
167    Tick noResponseCycles;
168
169    uint64_t numReads;
170    uint64_t maxLoads;
171
172    bool atomic;
173
174    Stats::Scalar<> numReadsStat;
175    Stats::Scalar<> numWritesStat;
176    Stats::Scalar<> numCopiesStat;
177
178    // called by MemCompleteEvent::process()
179    void completeRequest(PacketPtr pkt);
180
181    void sendPkt(PacketPtr pkt);
182
183    void doRetry();
184
185    friend class MemCompleteEvent;
186};
187
188#endif // __CPU_MEMTEST_MEMTEST_HH__
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