tlb.hh revision 5086:e7913ffb379d 
1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * All rights reserved.
4 *
5 * Redistribution and use of this software in source and binary forms,
6 * with or without modification, are permitted provided that the
7 * following conditions are met:
8 *
9 * The software must be used only for Non-Commercial Use which means any
10 * use which is NOT directed to receiving any direct monetary
11 * compensation for, or commercial advantage from such use.  Illustrative
12 * examples of non-commercial use are academic research, personal study,
13 * teaching, education and corporate research & development.
14 * Illustrative examples of commercial use are distributing products for
15 * commercial advantage and providing services using the software for
16 * commercial advantage.
17 *
18 * If you wish to use this software or functionality therein that may be
19 * covered by patents for commercial use, please contact:
20 *     Director of Intellectual Property Licensing
21 *     Office of Strategy and Technology
22 *     Hewlett-Packard Company
23 *     1501 Page Mill Road
24 *     Palo Alto, California  94304
25 *
26 * Redistributions of source code must retain the above copyright notice,
27 * this list of conditions and the following disclaimer.  Redistributions
28 * in binary form must reproduce the above copyright notice, this list of
29 * conditions and the following disclaimer in the documentation and/or
30 * other materials provided with the distribution.  Neither the name of
31 * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
32 * contributors may be used to endorse or promote products derived from
33 * this software without specific prior written permission.  No right of
34 * sublicense is granted herewith.  Derivatives of the software and
35 * output created using the software may be prepared, but only for
36 * Non-Commercial Uses.  Derivatives of the software may be shared with
37 * others provided: (i) the others agree to abide by the list of
38 * conditions herein which includes the Non-Commercial Use restrictions;
39 * and (ii) such Derivatives of the software include the above copyright
40 * notice to acknowledge the contribution from this software where
41 * applicable, this list of conditions and the disclaimer below.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
54 *
55 * Authors: Gabe Black
56 */
57
58#ifndef __ARCH_X86_TLB_HH__
59#define __ARCH_X86_TLB_HH__
60
61#include "config/full_system.hh"
62
63#if FULL_SYSTEM
64
65#include "mem/request.hh"
66#include "params/X86DTB.hh"
67#include "params/X86ITB.hh"
68#include "sim/faults.hh"
69#include "sim/sim_object.hh"
70
71class ThreadContext;
72class Packet;
73
74namespace X86ISA
75{
76    struct TlbEntry
77    {
78        Addr pageStart;
79        TlbEntry() {}
80        TlbEntry(Addr paddr) : pageStart(paddr) {}
81
82        void serialize(std::ostream &os);
83        void unserialize(Checkpoint *cp, const std::string &section);
84    };
85
86class TLB : public SimObject
87{
88  public:
89    typedef X86TLBParams Params;
90    TLB(const Params *p);
91
92    void dumpAll();
93
94    // Checkpointing
95    virtual void serialize(std::ostream &os);
96    virtual void unserialize(Checkpoint *cp, const std::string &section);
97};
98
99class ITB : public TLB
100{
101  public:
102    typedef X86ITBParams Params;
103    ITB(const Params *p) : TLB(p)
104    {
105    }
106
107    Fault translate(RequestPtr &req, ThreadContext *tc);
108
109    friend class DTB;
110};
111
112class DTB : public TLB
113{
114  public:
115    typedef X86DTBParams Params;
116    DTB(const Params *p) : TLB(p)
117    {
118    }
119
120    Fault translate(RequestPtr &req, ThreadContext *tc, bool write);
121#if FULL_SYSTEM
122    Tick doMmuRegRead(ThreadContext *tc, Packet *pkt);
123    Tick doMmuRegWrite(ThreadContext *tc, Packet *pkt);
124#endif
125
126    // Checkpointing
127    virtual void serialize(std::ostream &os);
128    virtual void unserialize(Checkpoint *cp, const std::string &section);
129};
130
131}
132
133#else
134
135#include <iostream>
136
137#include "sim/host.hh"
138#include "sim/tlb.hh"
139
140class Checkpoint;
141
142namespace X86ISA
143{
144    struct TlbEntry
145    {
146        Addr pageStart;
147        TlbEntry() {}
148        TlbEntry(Addr paddr) : pageStart(paddr) {}
149
150        void serialize(std::ostream &os);
151        void unserialize(Checkpoint *cp, const std::string &section);
152    };
153
154    class ITB : public GenericTLB
155    {
156      public:
157        ITB(const Params *p) : GenericTLB(p)
158        {}
159    };
160
161    class DTB : public GenericTLB
162    {
163      public:
164        DTB(const Params *p) : GenericTLB(p)
165        {}
166    };
167};
168
169#endif
170
171#endif // __ARCH_X86_TLB_HH__
172