ntoskrnl/include/internal/arm/mm.h

   1 /*
   2  * kernel internal memory management definitions for arm
   3  */
   4 #pragma once
   5
   6 #define _MI_PAGING_LEVELS 2
   7
   8 /* Memory layout base addresses */
   9 #define MI_USER_PROBE_ADDRESS                   (PVOID)0x7FFF0000
  10 #define MI_DEFAULT_SYSTEM_RANGE_START           (PVOID)0x80000000
  11 #define HYPER_SPACE                                    0xC0500000
  12 #define HYPER_SPACE_END                                0xC08FFFFF
  13 #define MI_SYSTEM_CACHE_WS_START                (PVOID)0xC0C00000
  14 #define MI_PAGED_POOL_START                     (PVOID)0xE1000000
  15 #define MI_NONPAGED_POOL_END                    (PVOID)0xFFBE0000
  16 #define MI_DEBUG_MAPPING                        (PVOID)0xFFBFF000
  17 #define MI_HIGHEST_SYSTEM_ADDRESS               (PVOID)0xFFFFFFFF
  18
  19 #define PTE_PER_PAGE 256
  20 #define PDE_PER_PAGE 4096
  21 #define PPE_PER_PAGE 1
  22
  23 /* Misc address definitions */
  24 #define MI_SYSTEM_PTE_BASE                      (PVOID)MiAddressToPte(NULL)
  25 #define MM_HIGHEST_VAD_ADDRESS \
  26     (PVOID)((ULONG_PTR)MM_HIGHEST_USER_ADDRESS - (16 * PAGE_SIZE))
  27 #define MI_MAPPING_RANGE_START              ((ULONG)HYPER_SPACE)
  28 #define MI_MAPPING_RANGE_END                (MI_MAPPING_RANGE_START + \
  29                                                   MI_HYPERSPACE_PTES * PAGE_SIZE)
  30 #define MI_DUMMY_PTE                        (PMMPTE)(MI_MAPPING_RANGE_END + \
  31                                                   PAGE_SIZE)
  32 #define MI_VAD_BITMAP                       (PMMPTE)(MI_DUMMY_PTE + \
  33                                                   PAGE_SIZE)
  34 #define MI_WORKING_SET_LIST                 (PMMPTE)(MI_VAD_BITMAP + \
  35                                                   PAGE_SIZE)
  36
  37 /* Memory sizes */
  38 #define MI_MIN_PAGES_FOR_NONPAGED_POOL_TUNING   ((255 * _1MB) >> PAGE_SHIFT)
  39 #define MI_MIN_PAGES_FOR_SYSPTE_TUNING          ((19 * _1MB) >> PAGE_SHIFT)
  40 #define MI_MIN_PAGES_FOR_SYSPTE_BOOST           ((32 * _1MB) >> PAGE_SHIFT)
  41 #define MI_MIN_PAGES_FOR_SYSPTE_BOOST_BOOST     ((256 * _1MB) >> PAGE_SHIFT)
  42 #define MI_MIN_INIT_PAGED_POOLSIZE              (32 * _1MB)
  43 #define MI_MAX_INIT_NONPAGED_POOL_SIZE          (128 * _1MB)
  44 #define MI_MAX_NONPAGED_POOL_SIZE               (128 * _1MB)
  45 #define MI_SYSTEM_VIEW_SIZE                     (32 * _1MB)
  46 #define MI_SESSION_VIEW_SIZE                    (48 * _1MB)
  47 #define MI_SESSION_POOL_SIZE                    (16 * _1MB)
  48 #define MI_SESSION_IMAGE_SIZE                   (8 * _1MB)
  49 #define MI_SESSION_WORKING_SET_SIZE             (4 * _1MB)
  50 #define MI_SESSION_SIZE                         (MI_SESSION_VIEW_SIZE + \
  51                                                  MI_SESSION_POOL_SIZE + \
  52                                                  MI_SESSION_IMAGE_SIZE + \
  53                                                  MI_SESSION_WORKING_SET_SIZE)
  54 #define MI_MIN_ALLOCATION_FRAGMENT              (4 * _1KB)
  55 #define MI_ALLOCATION_FRAGMENT                  (64 * _1KB)
  56 #define MI_MAX_ALLOCATION_FRAGMENT              (2  * _1MB)
  57
  58 /* Misc constants */
  59 #define MM_PTE_SOFTWARE_PROTECTION_BITS         6
  60 #define MI_MIN_SECONDARY_COLORS                 8
  61 #define MI_SECONDARY_COLORS                     64
  62 #define MI_MAX_SECONDARY_COLORS                 1024
  63 #define MI_MAX_FREE_PAGE_LISTS                  4
  64 #define MI_HYPERSPACE_PTES                     (256 - 1) /* Dee PDR definition */
  65 #define MI_ZERO_PTES                           (32) /* Dee PDR definition */
  66 #define MI_MAX_ZERO_BITS                        21
  67 #define SESSION_POOL_LOOKASIDES                 26 // CHECKME
  68
  69 /* MMPTE related defines */
  70 #define MM_EMPTY_PTE_LIST  ((ULONG)0xFFFFF)
  71 #define MM_EMPTY_LIST  ((ULONG_PTR)-1)
  72
  73
  74 /* Easy accessing PFN in PTE */
  75 #define PFN_FROM_PTE(v) ((v)->u.Hard.PageFrameNumber)
  76
  77 /* Macros for portable PTE modification */
  78 #define MI_MAKE_DIRTY_PAGE(x)
  79 #define MI_MAKE_CLEAN_PAGE(x)
  80 #define MI_MAKE_ACCESSED_PAGE(x)
  81 #define MI_PAGE_DISABLE_CACHE(x)   ((x)->u.Hard.Cached = 0)
  82 #define MI_PAGE_WRITE_THROUGH(x)   ((x)->u.Hard.Buffered = 0)
  83 #define MI_PAGE_WRITE_COMBINED(x)  ((x)->u.Hard.Buffered = 1)
  84 #define MI_IS_PAGE_LARGE(x)        FALSE
  85 #define MI_IS_PAGE_WRITEABLE(x)    ((x)->u.Hard.ReadOnly == 0)
  86 #define MI_IS_PAGE_COPY_ON_WRITE(x)FALSE
  87 #define MI_IS_PAGE_DIRTY(x)        TRUE
  88 #define MI_MAKE_OWNER_PAGE(x)      ((x)->u.Hard.Owner = 1)
  89 #define MI_MAKE_WRITE_PAGE(x)      ((x)->u.Hard.ReadOnly = 0)
  90
  91 /* Convert an address to a corresponding PTE */
  92 #define MiAddressToPte(x) \
  93     ((PMMPTE)(PTE_BASE + (((ULONG)(x) >> 12) << 2)))
  94
  95 /* Convert an address to a corresponding PDE */
  96 #define MiAddressToPde(x) \
  97     ((PMMPDE)(PDE_BASE + (((ULONG)(x) >> 20) << 2)))
  98
  99 /* Convert an address to a corresponding PTE offset/index */
 100 #define MiAddressToPteOffset(x) \
 101     ((((ULONG)(x)) << 12) >> 24)
 102
 103 /* Convert an address to a corresponding PDE offset/index */
 104 #define MiAddressToPdeOffset(x) \
 105     (((ULONG)(x)) >> 20)
 106 #define MiGetPdeOffset MiAddressToPdeOffset
 107
 108 /* Convert a PTE/PDE into a corresponding address */
 109 #define MiPteToAddress(_Pte) ((PVOID)((ULONG)(_Pte) << 10))
 110 #define MiPdeToAddress(_Pde) ((PVOID)((ULONG)(_Pde) << 18))
 111
 112 /* Translate between P*Es */
 113 #define MiPdeToPte(_Pde)   ((PMMPTE)0) /* FIXME */
 114 #define MiPteToPde(_Pte)   ((PMMPDE)0) /* FIXME */
 115
 116 /* Check P*E boundaries */
 117 #define MiIsPteOnPdeBoundary(PointerPte) \
 118     ((((ULONG_PTR)PointerPte) & (PAGE_SIZE - 1)) == 0)
 119
 120 //
 121 // Decodes a Prototype PTE into the underlying PTE
 122 //
 123 #define MiProtoPteToPte(x)                  \
 124     (PMMPTE)((ULONG_PTR)MmPagedPoolStart +  \
 125              (((x)->u.Proto.ProtoAddressHigh << 9) | (x)->u.Proto.ProtoAddressLow << 2))
 126
 127 //
 128 // Decodes a Prototype PTE into the underlying PTE
 129 //
 130 #define MiSubsectionPteToSubsection(x)                              \
 131     ((x)->u.Subsect.WhichPool == PagedPool) ?                       \
 132         (PMMPTE)((ULONG_PTR)MmSubsectionBase +                      \
 133                  (((x)->u.Subsect.SubsectionAddressHigh << 7) |     \
 134                    (x)->u.Subsect.SubsectionAddressLow << 3)) :     \
 135         (PMMPTE)((ULONG_PTR)MmNonPagedPoolEnd -                     \
 136                 (((x)->u.Subsect.SubsectionAddressHigh << 7) |      \
 137                   (x)->u.Subsect.SubsectionAddressLow << 3))
 138
 139 //
 140 // Number of bits corresponding to the area that a coarse page table occupies (1KB)
 141 //
 142 #define CPT_SHIFT 10
 143
 144 /* See PDR definition */
 145 #define MI_ZERO_PTE                         (PMMPTE)(MI_MAPPING_RANGE_END + \
 146                                              PAGE_SIZE)
 147