2 * Copyright (c) 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: Ron Dreslinski
29 */
30
31/**
32 * @file
33 * Describes a strided prefetcher.
34 */
35
36#ifndef __MEM_CACHE_PREFETCH_STRIDE_PREFETCHER_HH__
37#define __MEM_CACHE_PREFETCH_STRIDE_PREFETCHER_HH__
38
39#include <climits>
40
41#include "mem/cache/prefetch/base.hh"
42#include "params/StridePrefetcher.hh"
43
44class StridePrefetcher : public BasePrefetcher
45{
46 protected:
47
48 static const int Max_Contexts = 64;
49
50 // These constants need to be changed with the type of the
51 // 'confidence' field below.
52 static const int Max_Conf = INT_MAX;
53 static const int Min_Conf = INT_MIN;
54
55 class StrideEntry
56 {
57 public:
58 Addr instAddr;
59 Addr missAddr;
| 14 * Copyright (c) 2005 The Regents of The University of Michigan
15 * All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions are
19 * met: redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer;
21 * redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution;
24 * neither the name of the copyright holders nor the names of its
25 * contributors may be used to endorse or promote products derived from
26 * this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 *
40 * Authors: Ron Dreslinski
41 */
42
43/**
44 * @file
45 * Describes a strided prefetcher.
46 */
47
48#ifndef __MEM_CACHE_PREFETCH_STRIDE_PREFETCHER_HH__
49#define __MEM_CACHE_PREFETCH_STRIDE_PREFETCHER_HH__
50
51#include <climits>
52
53#include "mem/cache/prefetch/base.hh"
54#include "params/StridePrefetcher.hh"
55
56class StridePrefetcher : public BasePrefetcher
57{
58 protected:
59
60 static const int Max_Contexts = 64;
61
62 // These constants need to be changed with the type of the
63 // 'confidence' field below.
64 static const int Max_Conf = INT_MAX;
65 static const int Min_Conf = INT_MIN;
66
67 class StrideEntry
68 {
69 public:
70 Addr instAddr;
71 Addr missAddr;
|
66 std::list<StrideEntry*> table[Max_Contexts];
67
68 public:
69
70 StridePrefetcher(const Params *p)
71 : BasePrefetcher(p)
72 {
73 }
74
75 ~StridePrefetcher() {}
76
77 void calculatePrefetch(PacketPtr &pkt, std::list<Addr> &addresses,
78 std::list<Cycles> &delays);
79};
80
81#endif // __MEM_CACHE_PREFETCH_STRIDE_PREFETCHER_HH__
| 77 std::list<StrideEntry*> table[Max_Contexts];
78
79 public:
80
81 StridePrefetcher(const Params *p)
82 : BasePrefetcher(p)
83 {
84 }
85
86 ~StridePrefetcher() {}
87
88 void calculatePrefetch(PacketPtr &pkt, std::list<Addr> &addresses,
89 std::list<Cycles> &delays);
90};
91
92#endif // __MEM_CACHE_PREFETCH_STRIDE_PREFETCHER_HH__
|