reactos/include/ndk/i386/mmtypes.h

   1 /*++ NDK Version: 0095
   2
   3 Copyright (c) Alex Ionescu.  All rights reserved.
   4
   5 Header Name:
   6
   7     mmtypes.h (X86)
   8
   9 Abstract:
  10
  11     i386 Type definitions for the Memory Manager
  12
  13 Author:
  14
  15     Alex Ionescu (alex.ionescu@reactos.com)   06-Oct-2004
  16
  17 --*/
  18
  19 #ifndef _I386_MMTYPES_H
  20 #define _I386_MMTYPES_H
  21
  22 #ifdef __cplusplus
  23 extern "C" {
  24 #endif
  25
  26 //
  27 // Dependencies
  28 //
  29
  30 //
  31 // Page-related Macros
  32 //
  33 #define PAGE_SIZE                         0x1000
  34 #define PAGE_SHIFT                        12L
  35 #define MM_ALLOCATION_GRANULARITY         0x10000
  36 #define MM_ALLOCATION_GRANULARITY_SHIFT   16L
  37 #define MM_PAGE_FRAME_NUMBER_SIZE         20
  38
  39 //
  40 // Address of the shared user page
  41 //
  42 #define MM_SHARED_USER_DATA_VA 0x7FFE0000
  43
  44 //
  45 // Sanity checks for Paging Macros
  46 //
  47 #ifdef C_ASSERT
  48 C_ASSERT(PAGE_SIZE == (1 << PAGE_SHIFT));
  49 C_ASSERT(MM_ALLOCATION_GRANULARITY == (1 << MM_ALLOCATION_GRANULARITY_SHIFT));
  50 C_ASSERT(MM_ALLOCATION_GRANULARITY &&
  51          !(MM_ALLOCATION_GRANULARITY & (MM_ALLOCATION_GRANULARITY - 1)));
  52 C_ASSERT(MM_ALLOCATION_GRANULARITY >= PAGE_SIZE);
  53 #endif
  54
  55 //
  56 // PAE SEG0 Base?
  57 //
  58 #define KSEG0_BASE_PAE                    0xE0000000
  59
  60 //
  61 // Page Table Entry Definitions
  62 //
  63 typedef struct _HARDWARE_PTE_X86
  64 {
  65     ULONG Valid:1;
  66     ULONG Write:1;
  67     ULONG Owner:1;
  68     ULONG WriteThrough:1;
  69     ULONG CacheDisable:1;
  70     ULONG Accessed:1;
  71     ULONG Dirty:1;
  72     ULONG LargePage:1;
  73     ULONG Global:1;
  74     ULONG CopyOnWrite:1;
  75     ULONG Prototype: 1;
  76     ULONG reserved: 1;
  77     ULONG PageFrameNumber:20;
  78 } HARDWARE_PTE_X86, *PHARDWARE_PTE_X86;
  79
  80 typedef struct _MMPTE_SOFTWARE
  81 {
  82     ULONG Valid:1;
  83     ULONG PageFileLow:4;
  84     ULONG Protection:5;
  85     ULONG Prototype:1;
  86     ULONG Transition:1;
  87     ULONG PageFileHigh:20;
  88 } MMPTE_SOFTWARE;
  89
  90 typedef struct _MMPTE_TRANSITION
  91 {
  92     ULONG Valid:1;
  93     ULONG Write:1;
  94     ULONG Owner:1;
  95     ULONG WriteThrough:1;
  96     ULONG CacheDisable:1;
  97     ULONG Protection:5;
  98     ULONG Prototype:1;
  99     ULONG Transition:1;
 100     ULONG PageFrameNumber:20;
 101 } MMPTE_TRANSITION;
 102
 103 typedef struct _MMPTE_PROTOTYPE
 104 {
 105     ULONG Valid:1;
 106     ULONG ProtoAddressLow:7;
 107     ULONG ReadOnly:1;
 108     ULONG WhichPool:1;
 109     ULONG Prototype:1;
 110     ULONG ProtoAddressHigh:21;
 111 } MMPTE_PROTOTYPE;
 112
 113 typedef struct _MMPTE_SUBSECTION
 114 {
 115     ULONG Valid:1;
 116     ULONG SubsectionAddressLow:4;
 117     ULONG Protection:5;
 118     ULONG Prototype:1;
 119     ULONG SubsectionAddressHigh:20;
 120     ULONG WhichPool:1;
 121 } MMPTE_SUBSECTION;
 122
 123 typedef struct _MMPTE_LIST
 124 {
 125     ULONG Valid:1;
 126     ULONG OneEntry:1;
 127     ULONG filler0:8;
 128     ULONG Prototype:1;
 129     ULONG filler1:1;
 130     ULONG NextEntry:20;
 131 } MMPTE_LIST;
 132
 133 #ifndef CONFIG_SMP
 134
 135 typedef struct _MMPTE_HARDWARE
 136 {
 137     ULONG Valid:1;
 138     ULONG Write:1;
 139     ULONG Owner:1;
 140     ULONG WriteThrough:1;
 141     ULONG CacheDisable:1;
 142     ULONG Accessed:1;
 143     ULONG Dirty:1;
 144     ULONG LargePage:1;
 145     ULONG Global:1;
 146     ULONG CopyOnWrite:1;
 147     ULONG Prototype:1;
 148     ULONG reserved:1;
 149     ULONG PageFrameNumber:20;
 150 } MMPTE_HARDWARE, *PMMPTE_HARDWARE;
 151
 152 #else
 153
 154 typedef struct _MMPTE_HARDWARE
 155 {
 156     ULONG Valid:1;
 157     ULONG Writable:1;
 158     ULONG Owner:1;
 159     ULONG WriteThrough:1;
 160     ULONG CacheDisable:1;
 161     ULONG Accessed:1;
 162     ULONG Dirty:1;
 163     ULONG LargePage:1;
 164     ULONG Global:1;
 165     ULONG CopyOnWrite:1;
 166     ULONG Prototype:1;
 167     ULONG Write:1;
 168     ULONG PageFrameNumber:20;
 169 } MMPTE_HARDWARE, *PMMPTE_HARDWARE;
 170
 171 #endif
 172
 173 //
 174 // Use the right PTE structure
 175 //
 176 #define HARDWARE_PTE        HARDWARE_PTE_X86
 177 #define PHARDWARE_PTE       PHARDWARE_PTE_X86
 178
 179 #ifdef __cplusplus
 180 }; // extern "C"
 181 #endif
 182
 183 #endif