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