+++ /dev/null
-/*
- * PROJECT: ReactOS Kernel
- * LICENSE: BSD - See COPYING.ARM in the top level directory
- * FILE: ntoskrnl/mm/ARM3/mmsup.c
- * PURPOSE: ARM Memory Manager Support Routines
- * PROGRAMMERS: ReactOS Portable Systems Group
- */
-
-/* INCLUDES *******************************************************************/
-
-#include <ntoskrnl.h>
-#define NDEBUG
-#include <debug.h>
-
-#define MODULE_INVOLVED_IN_ARM3
-#include <mm/ARM3/miarm.h>
-
-/* GLOBALS ********************************************************************/
-
-SIZE_T MmMinimumWorkingSetSize;
-SIZE_T MmMaximumWorkingSetSize;
-SIZE_T MmPagesAboveWsMinimum;
-
-/* PUBLIC FUNCTIONS ***********************************************************/
-
-/*
- * @unimplemented
- */
-NTSTATUS
-NTAPI
-MmMapUserAddressesToPage(IN PVOID BaseAddress,
- IN SIZE_T NumberOfBytes,
- IN PVOID PageAddress)
-{
- UNIMPLEMENTED;
- return STATUS_NOT_IMPLEMENTED;
-}
-
-/*
- * @unimplemented
- */
-NTSTATUS
-NTAPI
-MmAdjustWorkingSetSize(IN SIZE_T WorkingSetMinimumInBytes,
- IN SIZE_T WorkingSetMaximumInBytes,
- IN ULONG SystemCache,
- IN BOOLEAN IncreaseOkay)
-{
- SIZE_T MinimumWorkingSetSize, MaximumWorkingSetSize;
- SSIZE_T Delta;
- PMMSUPPORT Ws;
- NTSTATUS Status;
-
- /* Check for special case: empty the working set */
- if ((WorkingSetMinimumInBytes == -1) &&
- (WorkingSetMaximumInBytes == -1))
- {
- UNIMPLEMENTED;
- return STATUS_NOT_IMPLEMENTED;
- }
-
- /* Assume success */
- Status = STATUS_SUCCESS;
-
- /* Get the working set and lock it */
- Ws = &PsGetCurrentProcess()->Vm;
- MiLockWorkingSet(PsGetCurrentThread(), Ws);
-
- /* Calculate the actual minimum and maximum working set size to set */
- MinimumWorkingSetSize = (WorkingSetMinimumInBytes != 0) ?
- (WorkingSetMinimumInBytes / PAGE_SIZE) : Ws->MinimumWorkingSetSize;
- MaximumWorkingSetSize = (WorkingSetMaximumInBytes != 0) ?
- (WorkingSetMaximumInBytes / PAGE_SIZE) : Ws->MaximumWorkingSetSize;
-
- /* Check if the new maximum exceeds the global maximum */
- if (MaximumWorkingSetSize > MmMaximumWorkingSetSize)
- {
- MaximumWorkingSetSize = MmMaximumWorkingSetSize;
- Status = STATUS_WORKING_SET_LIMIT_RANGE;
- }
-
- /* Check if the new minimum is below the global minimum */
- if (MinimumWorkingSetSize < MmMinimumWorkingSetSize)
- {
- MinimumWorkingSetSize = MmMinimumWorkingSetSize;
- Status = STATUS_WORKING_SET_LIMIT_RANGE;
- }
-
- /* Check if the new minimum exceeds the new maximum */
- if (MinimumWorkingSetSize > MaximumWorkingSetSize)
- {
- DPRINT1("MinimumWorkingSetSize (%lu) > MaximumWorkingSetSize (%lu)\n",
- MinimumWorkingSetSize, MaximumWorkingSetSize);
- Status = STATUS_BAD_WORKING_SET_LIMIT;
- goto Cleanup;
- }
-
- /* Calculate the minimum WS size adjustment and check if we increase */
- Delta = MinimumWorkingSetSize - Ws->MinimumWorkingSetSize;
- if (Delta > 0)
- {
- /* Is increasing ok? */
- if (!IncreaseOkay)
- {
- DPRINT1("Privilege for WS size increase not held\n");
- Status = STATUS_PRIVILEGE_NOT_HELD;
- goto Cleanup;
- }
-
- /* Check if the number of available pages is large enough */
- if (((SIZE_T)Delta / 1024) > (MmAvailablePages - 128))
- {
- DPRINT1("Not enough available pages\n");
- Status = STATUS_INSUFFICIENT_RESOURCES;
- goto Cleanup;
- }
-
- /* Check if there are enough resident available pages */
- if ((SIZE_T)Delta >
- (MmResidentAvailablePages - MmSystemLockPagesCount - 256))
- {
- DPRINT1("Not enough resident pages\n");
- Status = STATUS_INSUFFICIENT_RESOURCES;
- goto Cleanup;
- }
- }
-
- /* Update resident available pages */
- if (Delta != 0)
- {
- InterlockedExchangeAddSizeT(&MmResidentAvailablePages, -Delta);
- }
-
- /* Calculate new pages above minimum WS size */
- Delta += max((SSIZE_T)Ws->WorkingSetSize - MinimumWorkingSetSize, 0);
-
- /* Subtract old pages above minimum WS size */
- Delta -= max((SSIZE_T)Ws->WorkingSetSize - Ws->MinimumWorkingSetSize, 0);
-
- /* If it changed, add it to the global variable */
- if (Delta != 0)
- {
- InterlockedExchangeAddSizeT(&MmPagesAboveWsMinimum, Delta);
- }
-
- /* Set the new working set size */
- Ws->MinimumWorkingSetSize = MinimumWorkingSetSize;
- Ws->MaximumWorkingSetSize = MaximumWorkingSetSize;
-
-Cleanup:
-
- /* Unlock the working set and return the status */
- MiUnlockWorkingSet(PsGetCurrentThread(), Ws);
- return Status;
-}
-
-/*
- * @unimplemented
- */
-BOOLEAN
-NTAPI
-MmSetAddressRangeModified(IN PVOID Address,
- IN SIZE_T Length)
-{
- UNIMPLEMENTED;
- return FALSE;
-}
-
-/*
- * @implemented
- */
-BOOLEAN
-NTAPI
-MmIsAddressValid(IN PVOID VirtualAddress)
-{
-#if _MI_PAGING_LEVELS >= 4
- /* Check if the PXE is valid */
- if (MiAddressToPxe(VirtualAddress)->u.Hard.Valid == 0) return FALSE;
-#endif
-
-#if _MI_PAGING_LEVELS >= 3
- /* Check if the PPE is valid */
- if (MiAddressToPpe(VirtualAddress)->u.Hard.Valid == 0) return FALSE;
-#endif
-
-#if _MI_PAGING_LEVELS >= 2
- /* Check if the PDE is valid */
- if (MiAddressToPde(VirtualAddress)->u.Hard.Valid == 0) return FALSE;
-#endif
-
- /* Check if the PTE is valid */
- if (MiAddressToPte(VirtualAddress)->u.Hard.Valid == 0) return FALSE;
-
- /* This address is valid now, but it will only stay so if the caller holds
- * the PFN lock */
- return TRUE;
-}
-
-/*
- * @unimplemented
- */
-BOOLEAN
-NTAPI
-MmIsNonPagedSystemAddressValid(IN PVOID VirtualAddress)
-{
- DPRINT1("WARNING: %s returns bogus result\n", __FUNCTION__);
- return MmIsAddressValid(VirtualAddress);
-}
-
-/*
- * @unimplemented
- */
-NTSTATUS
-NTAPI
-MmSetBankedSection(IN HANDLE ProcessHandle,
- IN PVOID VirtualAddress,
- IN ULONG BankLength,
- IN BOOLEAN ReadWriteBank,
- IN PVOID BankRoutine,
- IN PVOID Context)
-{
- UNIMPLEMENTED;
- return STATUS_NOT_IMPLEMENTED;
-}
-
-/*
- * @implemented
- */
-BOOLEAN
-NTAPI
-MmIsRecursiveIoFault(VOID)
-{
- PETHREAD Thread = PsGetCurrentThread();
-
- //
- // If any of these is true, this is a recursive fault
- //
- return ((Thread->DisablePageFaultClustering) | (Thread->ForwardClusterOnly));
-}
-
-/*
- * @implemented
- */
-BOOLEAN
-NTAPI
-MmIsThisAnNtAsSystem(VOID)
-{
- /* Return if this is a server system */
- return MmProductType & 0xFF;
-}
-
-/*
- * @implemented
- */
-MM_SYSTEMSIZE
-NTAPI
-MmQuerySystemSize(VOID)
-{
- /* Return the low, medium or high memory system type */
- return MmSystemSize;
-}
-
-NTSTATUS
-NTAPI
-MmCreateMirror(VOID)
-{
- UNIMPLEMENTED;
- return STATUS_NOT_IMPLEMENTED;
-}
-
-/* EOF */
projects / reactos.git / blobdiff