reactos/ntoskrnl/mm/ARM3/mmsup.c

   1 /*
   2  * PROJECT:         ReactOS Kernel
   3  * LICENSE:         BSD - See COPYING.ARM in the top level directory
   4  * FILE:            ntoskrnl/mm/ARM3/mmsup.c
   5  * PURPOSE:         ARM Memory Manager Support Routines
   6  * PROGRAMMERS:     ReactOS Portable Systems Group
   7  */
   8
   9 /* INCLUDES *******************************************************************/
  10
  11 #include <ntoskrnl.h>
  12 #define NDEBUG
  13 #include <debug.h>
  14
  15 #define MODULE_INVOLVED_IN_ARM3
  16 #include "../ARM3/miarm.h"
  17
  18 /* PUBLIC FUNCTIONS ***********************************************************/
  19
  20 /*
  21  * @unimplemented
  22  */
  23 NTSTATUS
  24 NTAPI
  25 MmMapUserAddressesToPage(IN PVOID BaseAddress,
  26                          IN SIZE_T NumberOfBytes,
  27                          IN PVOID PageAddress)
  28 {
  29     UNIMPLEMENTED;
  30     return STATUS_NOT_IMPLEMENTED;
  31 }
  32
  33 /*
  34  * @unimplemented
  35  */
  36 NTSTATUS
  37 NTAPI
  38 MmAdjustWorkingSetSize(IN SIZE_T WorkingSetMinimumInBytes,
  39                        IN SIZE_T WorkingSetMaximumInBytes,
  40                        IN ULONG SystemCache,
  41                        IN BOOLEAN IncreaseOkay)
  42 {
  43     UNIMPLEMENTED;
  44     return STATUS_NOT_IMPLEMENTED;
  45 }
  46
  47 /*
  48  * @unimplemented
  49  */
  50 BOOLEAN
  51 NTAPI
  52 MmSetAddressRangeModified(IN PVOID Address,
  53                           IN SIZE_T Length)
  54 {
  55    UNIMPLEMENTED;
  56    return FALSE;
  57 }
  58
  59 /*
  60  * @implemented
  61  */
  62 BOOLEAN
  63 NTAPI
  64 MmIsAddressValid(IN PVOID VirtualAddress)
  65 {
  66 #if _MI_PAGING_LEVELS >= 4
  67     /* Check if the PXE is valid */
  68     if (MiAddressToPxe(VirtualAddress)->u.Hard.Valid == 0) return FALSE;
  69 #endif
  70
  71 #if _MI_PAGING_LEVELS >= 3
  72     /* Check if the PPE is valid */
  73     if (MiAddressToPpe(VirtualAddress)->u.Hard.Valid == 0) return FALSE;
  74 #endif
  75
  76 #if _MI_PAGING_LEVELS >= 2
  77     /* Check if the PDE is valid */
  78     if (MiAddressToPde(VirtualAddress)->u.Hard.Valid == 0) return FALSE;
  79 #endif
  80
  81     /* Check if the PTE is valid */
  82     if (MiAddressToPte(VirtualAddress)->u.Hard.Valid == 0) return FALSE;
  83
  84     /* This address is valid now, but it will only stay so if the caller holds
  85      * the PFN lock */
  86     return TRUE;
  87 }
  88
  89 /*
  90  * @unimplemented
  91  */
  92 BOOLEAN
  93 NTAPI
  94 MmIsNonPagedSystemAddressValid(IN PVOID VirtualAddress)
  95 {
  96     DPRINT1("WARNING: %s returns bogus result\n", __FUNCTION__);
  97     return MmIsAddressValid(VirtualAddress);
  98 }
  99
 100 /*
 101  * @unimplemented
 102  */
 103 NTSTATUS
 104 NTAPI
 105 MmSetBankedSection(IN HANDLE ProcessHandle,
 106                    IN PVOID VirtualAddress,
 107                    IN ULONG BankLength,
 108                    IN BOOLEAN ReadWriteBank,
 109                    IN PVOID BankRoutine,
 110                    IN PVOID Context)
 111 {
 112     UNIMPLEMENTED;
 113     return STATUS_NOT_IMPLEMENTED;
 114 }
 115
 116 /*
 117  * @implemented
 118  */
 119 BOOLEAN
 120 NTAPI
 121 MmIsRecursiveIoFault(VOID)
 122 {
 123     PETHREAD Thread = PsGetCurrentThread();
 124
 125     //
 126     // If any of these is true, this is a recursive fault
 127     //
 128     return ((Thread->DisablePageFaultClustering) | (Thread->ForwardClusterOnly));
 129 }
 130
 131 /*
 132  * @implemented
 133  */
 134 BOOLEAN
 135 NTAPI
 136 MmIsThisAnNtAsSystem(VOID)
 137 {
 138     /* Return if this is a server system */
 139     return MmProductType & 0xFF;
 140 }
 141
 142 /*
 143  * @implemented
 144  */
 145 MM_SYSTEMSIZE
 146 NTAPI
 147 MmQuerySystemSize(VOID)
 148 {
 149     /* Return the low, medium or high memory system type */
 150     return MmSystemSize;
 151 }
 152
 153 /* EOF */