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