src/arch/x86/tlb.hh

   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
  71 class ThreadContext;
  72 class Packet;
  73
  74 namespace 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
  86 class 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
  99 class 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
 112 class 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
 140 class Checkpoint;
 141
 142 namespace 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__