reactos/ntoskrnl/include/internal/i386/mm.h

   1 /*
   2  * kernel internal memory management definitions for x86
   3  */
   4 #pragma once
   5
   6 #ifdef _PAE_
   7 #define _MI_PAGING_LEVELS 3
   8 #else
   9 #define _MI_PAGING_LEVELS 2
  10 #endif
  11
  12 /* Memory layout base addresses */
  13 #define MI_USER_PROBE_ADDRESS                   (PVOID)0x7FFF0000
  14 #define MI_DEFAULT_SYSTEM_RANGE_START           (PVOID)0x80000000
  15 #define HYPER_SPACE                                    0xC0400000
  16 #define HYPER_SPACE_END                                0xC07FFFFF
  17 #define MI_SYSTEM_CACHE_WS_START                (PVOID)0xC0C00000
  18 #define MI_PAGED_POOL_START                     (PVOID)0xE1000000
  19 #define MI_NONPAGED_POOL_END                    (PVOID)0xFFBE0000
  20 #define MI_DEBUG_MAPPING                        (PVOID)0xFFBFF000
  21
  22 /* FIXME: These are different for PAE */
  23 #define PTE_BASE    0xC0000000
  24 #define PDE_BASE    0xC0300000
  25 #define PDE_TOP     0xC0300FFF
  26 #define PTE_TOP     0xC03FFFFF
  27
  28 #define PTE_PER_PAGE 0x400
  29 #define PDE_PER_PAGE 0x400
  30 #define PPE_PER_PAGE 1
  31
  32 /* Misc address definitions */
  33 #define MI_SYSTEM_PTE_BASE                      (PVOID)MiAddressToPte(NULL)
  34 #define MM_HIGHEST_VAD_ADDRESS \
  35     (PVOID)((ULONG_PTR)MM_HIGHEST_USER_ADDRESS - (16 * PAGE_SIZE))
  36 #define MI_MAPPING_RANGE_START              (ULONG)HYPER_SPACE
  37 #define MI_MAPPING_RANGE_END                (MI_MAPPING_RANGE_START + \
  38                                                   MI_HYPERSPACE_PTES * PAGE_SIZE)
  39 #define MI_DUMMY_PTE                        (PMMPTE)((ULONG_PTR)MI_MAPPING_RANGE_END + \
  40                                                   PAGE_SIZE)
  41 #define MI_VAD_BITMAP                       (PMMPTE)((ULONG_PTR)MI_DUMMY_PTE + \
  42                                                   PAGE_SIZE)
  43 #define MI_WORKING_SET_LIST                 (PMMPTE)((ULONG_PTR)MI_VAD_BITMAP + \
  44                                                   PAGE_SIZE)
  45
  46 /* Memory sizes */
  47 #define MI_MIN_PAGES_FOR_NONPAGED_POOL_TUNING   ((255 * _1MB) >> PAGE_SHIFT)
  48 #define MI_MIN_PAGES_FOR_SYSPTE_TUNING          ((19 * _1MB) >> PAGE_SHIFT)
  49 #define MI_MIN_PAGES_FOR_SYSPTE_BOOST           ((32 * _1MB) >> PAGE_SHIFT)
  50 #define MI_MIN_PAGES_FOR_SYSPTE_BOOST_BOOST     ((256 * _1MB) >> PAGE_SHIFT)
  51 #define MI_MIN_INIT_PAGED_POOLSIZE              (32 * _1MB)
  52 #define MI_MAX_INIT_NONPAGED_POOL_SIZE          (128 * _1MB)
  53 #define MI_MAX_NONPAGED_POOL_SIZE               (128 * _1MB)
  54 #define MI_SYSTEM_VIEW_SIZE                     (32 * _1MB)
  55 #define MI_SESSION_VIEW_SIZE                    (48 * _1MB)
  56 #define MI_SESSION_POOL_SIZE                    (16 * _1MB)
  57 #define MI_SESSION_IMAGE_SIZE                   (8 * _1MB)
  58 #define MI_SESSION_WORKING_SET_SIZE             (4 * _1MB)
  59 #define MI_SESSION_SIZE                         (MI_SESSION_VIEW_SIZE + \
  60                                                  MI_SESSION_POOL_SIZE + \
  61                                                  MI_SESSION_IMAGE_SIZE + \
  62                                                  MI_SESSION_WORKING_SET_SIZE)
  63 #define MI_MIN_ALLOCATION_FRAGMENT              (4 * _1KB)
  64 #define MI_ALLOCATION_FRAGMENT                  (64 * _1KB)
  65 #define MI_MAX_ALLOCATION_FRAGMENT              (2  * _1MB)
  66
  67 /* Misc constants */
  68 #define MM_PTE_SOFTWARE_PROTECTION_BITS         5
  69 #define MI_MIN_SECONDARY_COLORS                 8
  70 #define MI_SECONDARY_COLORS                     64
  71 #define MI_MAX_SECONDARY_COLORS                 1024
  72 #define MI_MAX_FREE_PAGE_LISTS                  4
  73 #define MI_HYPERSPACE_PTES                     (256 - 1)
  74 #define MI_ZERO_PTES                           (32)
  75 #define MI_MAX_ZERO_BITS                        21
  76 #define SESSION_POOL_LOOKASIDES                 26
  77
  78 /* MMPTE related defines */
  79 #define MM_EMPTY_PTE_LIST  ((ULONG)0xFFFFF)
  80 #define MM_EMPTY_LIST  ((ULONG_PTR)-1)
  81
  82
  83 /* Easy accessing PFN in PTE */
  84 #define PFN_FROM_PTE(v) ((v)->u.Hard.PageFrameNumber)
  85
  86 /* Macros for portable PTE modification */
  87 #define MI_MAKE_LOCAL_PAGE(x)      ((x)->u.Hard.Global = 0)
  88 #define MI_MAKE_DIRTY_PAGE(x)      ((x)->u.Hard.Dirty = 1)
  89 #define MI_MAKE_ACCESSED_PAGE(x)   ((x)->u.Hard.Accessed = 1)
  90 #define MI_PAGE_DISABLE_CACHE(x)   ((x)->u.Hard.CacheDisable = 1)
  91 #define MI_PAGE_WRITE_THROUGH(x)   ((x)->u.Hard.WriteThrough = 1)
  92 #define MI_PAGE_WRITE_COMBINED(x)  ((x)->u.Hard.WriteThrough = 0)
  93 #define MI_IS_PAGE_LARGE(x)        ((x)->u.Hard.LargePage == 1)
  94 #if !defined(CONFIG_SMP)
  95 #define MI_IS_PAGE_WRITEABLE(x)    ((x)->u.Hard.Write == 1)
  96 #else
  97 #define MI_IS_PAGE_WRITEABLE(x)    ((x)->u.Hard.Writable == 1)
  98 #endif
  99 #define MI_IS_PAGE_COPY_ON_WRITE(x)((x)->u.Hard.CopyOnWrite == 1)
 100 #define MI_IS_PAGE_DIRTY(x)        ((x)->u.Hard.Dirty == 1)
 101 #define MI_MAKE_OWNER_PAGE(x)      ((x)->u.Hard.Owner = 1)
 102 #if !defined(CONFIG_SMP)
 103 #define MI_MAKE_WRITE_PAGE(x)      ((x)->u.Hard.Write = 1)
 104 #else
 105 #define MI_MAKE_WRITE_PAGE(x)      ((x)->u.Hard.Writable = 1)
 106 #endif
 107
 108 /* On x86, these two are the same */
 109 #define MI_WRITE_VALID_PPE MI_WRITE_VALID_PTE
 110
 111 /* Convert an address to a corresponding PTE */
 112 #define MiAddressToPte(x) \
 113     ((PMMPTE)(((((ULONG)(x)) >> 12) << 2) + PTE_BASE))
 114
 115 /* Convert an address to a corresponding PDE */
 116 #define MiAddressToPde(x) \
 117     ((PMMPDE)(((((ULONG)(x)) >> 22) << 2) + PDE_BASE))
 118
 119 /* Convert an address to a corresponding PTE offset/index */
 120 #define MiAddressToPteOffset(x) \
 121     ((((ULONG)(x)) << 10) >> 22)
 122
 123 /* Convert an address to a corresponding PDE offset/index */
 124 #define MiAddressToPdeOffset(x) \
 125     (((ULONG)(x)) / (1024 * PAGE_SIZE))
 126 #define MiGetPdeOffset MiAddressToPdeOffset
 127
 128 /* Convert a PTE/PDE into a corresponding address */
 129 #define MiPteToAddress(_Pte) ((PVOID)((ULONG)(_Pte) << 10))
 130 #define MiPdeToAddress(_Pde) ((PVOID)((ULONG)(_Pde) << 20))
 131
 132 /* Translate between P*Es */
 133 #define MiPdeToPte(_Pde) ((PMMPTE)MiPteToAddress(_Pde))
 134 #define MiPteToPde(_Pte) ((PMMPDE)MiAddressToPte(_Pte))
 135
 136 /* Check P*E boundaries */
 137 #define MiIsPteOnPdeBoundary(PointerPte) \
 138     ((((ULONG_PTR)PointerPte) & (PAGE_SIZE - 1)) == 0)
 139
 140 //
 141 // Decodes a Prototype PTE into the underlying PTE
 142 //
 143 #define MiProtoPteToPte(x)                  \
 144     (PMMPTE)((ULONG_PTR)MmPagedPoolStart +  \
 145              (((x)->u.Proto.ProtoAddressHigh << 9) | (x)->u.Proto.ProtoAddressLow << 2))
 146
 147 //
 148 // Decodes a Prototype PTE into the underlying PTE
 149 //
 150 #define MiSubsectionPteToSubsection(x)                              \
 151     ((x)->u.Subsect.WhichPool == PagedPool) ?                       \
 152         (PMMPTE)((ULONG_PTR)MmSubsectionBase +                      \
 153                  (((x)->u.Subsect.SubsectionAddressHigh << 7) |     \
 154                    (x)->u.Subsect.SubsectionAddressLow << 3)) :     \
 155         (PMMPTE)((ULONG_PTR)MmNonPagedPoolEnd -                     \
 156                 (((x)->u.Subsect.SubsectionAddressHigh << 7) |      \
 157                   (x)->u.Subsect.SubsectionAddressLow << 3))