7 Jan
2005
7 Jan
'05
4:10 p.m.
modified include/ntos/zwtypes.h Add SYSTEM_BATTERY_STATE
from w32api.
modified ntoskrnl/include/internal/mm.h Add MmAllocPagesSpecifyRange
(internal function)
modified ntoskrnl/mm/freelist.c Add MmAllocPagesSpecifyRange
function (used by MmAllocatePagesForMdl)
modified ntoskrnl/mm/mdl.c Implemenet
MmAllocatePagesForMdl, MmFreePagesFromMdl. Turn MmMapLockedPages into
MmMapLockedPagesSpecifyCache (and make MmMapLockedPages a wrapper to
it).
modified ntoskrnl/po/power.c Implement SystemBatteryState
in NtPowerInformation (Thanks to Alex for testing the returned values on
his windows desktop PC)
Windows 2000 NVIDIA driver should work now.
Modified: trunk/reactos/include/ntos/zwtypes.h
Modified: trunk/reactos/ntoskrnl/include/internal/mm.h
Modified: trunk/reactos/ntoskrnl/mm/freelist.c
Modified: trunk/reactos/ntoskrnl/mm/mdl.c
Modified: trunk/reactos/ntoskrnl/po/power.c
_____
Modified: trunk/reactos/include/ntos/zwtypes.h
--- trunk/reactos/include/ntos/zwtypes.h 2005-01-07 15:36:40 UTC
(rev 12870)
+++ trunk/reactos/include/ntos/zwtypes.h 2005-01-07 16:10:48 UTC
(rev 12871)
@@ -1666,6 +1666,22 @@
} OBJECT_DIRECTORY_INFORMATION, *POBJECT_DIRECTORY_INFORMATION;
+/* system battery state */
+typedef struct _SYSTEM_BATTERY_STATE {
+ BOOLEAN AcOnLine;
+ BOOLEAN BatteryPresent;
+ BOOLEAN Charging;
+ BOOLEAN Discharging;
+ BOOLEAN Spare1[4];
+ ULONG MaxCapacity;
+ ULONG RemainingCapacity;
+ ULONG Rate;
+ ULONG EstimatedTime;
+ ULONG DefaultAlert1;
+ ULONG DefaultAlert2;
+} SYSTEM_BATTERY_STATE, *PSYSTEM_BATTERY_STATE;
+
+
// power information levels
typedef enum _POWER_INFORMATION_LEVEL {
SystemPowerPolicyAc,
_____
Modified: trunk/reactos/ntoskrnl/include/internal/mm.h
--- trunk/reactos/ntoskrnl/include/internal/mm.h 2005-01-07
15:36:40 UTC (rev 12870)
+++ trunk/reactos/ntoskrnl/include/internal/mm.h 2005-01-07
16:10:48 UTC (rev 12871)
@@ -697,6 +697,12 @@
PFN_TYPE MmAllocPage(ULONG Consumer, SWAPENTRY SavedSwapEntry);
+LONG MmAllocPagesSpecifyRange(ULONG Consumer,
+ PHYSICAL_ADDRESS LowestAddress,
+ PHYSICAL_ADDRESS HighestAddress,
+ ULONG NumberOfPages,
+ PPFN_TYPE Pages);
+
VOID MmDereferencePage(PFN_TYPE Page);
VOID MmReferencePage(PFN_TYPE Page);
_____
Modified: trunk/reactos/ntoskrnl/mm/freelist.c
--- trunk/reactos/ntoskrnl/mm/freelist.c 2005-01-07 15:36:40 UTC
(rev 12870)
+++ trunk/reactos/ntoskrnl/mm/freelist.c 2005-01-07 16:10:48 UTC
(rev 12871)
@@ -897,7 +897,155 @@
return PfnOffset;
}
+LONG
+MmAllocPagesSpecifyRange(ULONG Consumer,
+ PHYSICAL_ADDRESS LowestAddress,
+ PHYSICAL_ADDRESS HighestAddress,
+ ULONG NumberOfPages,
+ PPFN_TYPE Pages)
+{
+ PPHYSICAL_PAGE PageDescriptor;
+ KIRQL oldIrql;
+ PFN_TYPE LowestPage, HighestPage;
+ PFN_TYPE pfn;
+ ULONG NumberOfPagesFound = 0;
+ ULONG i;
+ DPRINT("MmAllocPagesSpecifyRange()\n"
+ " LowestAddress = 0x%08x%08x\n"
+ " HighestAddress = 0x%08x%08x\n"
+ " NumberOfPages = %d\n",
+ LowestAddress.u.HighPart, LowestAddress.u.LowPart,
+ HighestAddress.u.HighPart, HighestAddress.u.LowPart,
+ NumberOfPages);
+
+ if (NumberOfPages == 0)
+ return 0;
+
+ LowestPage = LowestAddress.QuadPart / PAGE_SIZE;
+ HighestPage = HighestAddress.QuadPart / PAGE_SIZE;
+ if ((HighestAddress.u.LowPart % PAGE_SIZE) != 0)
+ HighestPage++;
+
+ if (LowestPage >= MmPageArraySize)
+ {
+ DPRINT1("MmAllocPagesSpecifyRange(): Out of memory\n");
+ return -1;
+ }
+ if (HighestPage > MmPageArraySize)
+ HighestPage = MmPageArraySize;
+
+ KeAcquireSpinLock(&PageListLock, &oldIrql);
+ if (LowestPage == 0 && HighestPage == MmPageArraySize)
+ {
+ PLIST_ENTRY ListEntry;
+ while (NumberOfPagesFound < NumberOfPages)
+ {
+ if (!IsListEmpty(&FreeZeroedPageListHead))
+ {
+ ListEntry = RemoveTailList(&FreeZeroedPageListHead);
+ }
+ else if (!IsListEmpty(&FreeUnzeroedPageListHead))
+ {
+ ListEntry = RemoveTailList(&FreeUnzeroedPageListHead);
+ UnzeroedPageCount--;
+ }
+ else
+ {
+ if (NumberOfPagesFound == 0)
+ {
+ KeReleaseSpinLock(&PageListLock, oldIrql);
+ DPRINT1("MmAllocPagesSpecifyRange(): Out of memory\n");
+ return -1;
+ }
+ else
+ {
+ break;
+ }
+ }
+ PageDescriptor = CONTAINING_RECORD(ListEntry, PHYSICAL_PAGE,
ListEntry);
+
+ ASSERT(PageDescriptor->Flags.Type == MM_PHYSICAL_PAGE_FREE);
+ ASSERT(PageDescriptor->MapCount == 0);
+ ASSERT(PageDescriptor->ReferenceCount == 0);
+
+ /* Allocate the page */
+ PageDescriptor->Flags.Type = MM_PHYSICAL_PAGE_USED;
+ PageDescriptor->Flags.Consumer = Consumer;
+ PageDescriptor->ReferenceCount = 1;
+ PageDescriptor->LockCount = 0;
+ PageDescriptor->MapCount = 0;
+ PageDescriptor->SavedSwapEntry = 0; /* FIXME: Do we need swap
entries? */
+ InsertTailList(&UsedPageListHeads[Consumer],
&PageDescriptor->ListEntry);
+
+ MmStats.NrSystemPages++;
+ MmStats.NrFreePages--;
+
+ /* Remember the page */
+ pfn = PageDescriptor - MmPageArray;
+ Pages[NumberOfPagesFound++] = pfn;
+ }
+ }
+ else
+ {
+ INT LookForZeroedPages;
+ for (LookForZeroedPages = 1; LookForZeroedPages >= 0;
LookForZeroedPages--)
+ {
+ for (pfn = LowestPage; pfn < HighestPage; pfn++)
+ {
+ PageDescriptor = MmPageArray + pfn;
+
+ if (PageDescriptor->Flags.Type != MM_PHYSICAL_PAGE_FREE)
+ continue;
+ if (PageDescriptor->Flags.Zero != LookForZeroedPages)
+ continue;
+
+ ASSERT(PageDescriptor->MapCount == 0);
+ ASSERT(PageDescriptor->ReferenceCount == 0);
+
+ /* Allocate the page */
+ PageDescriptor->Flags.Type = MM_PHYSICAL_PAGE_USED;
+ PageDescriptor->Flags.Consumer = Consumer;
+ PageDescriptor->ReferenceCount = 1;
+ PageDescriptor->LockCount = 0;
+ PageDescriptor->MapCount = 0;
+ PageDescriptor->SavedSwapEntry = 0; /* FIXME: Do we need
swap entries? */
+ RemoveEntryList(&PageDescriptor->ListEntry);
+ InsertTailList(&UsedPageListHeads[Consumer],
&PageDescriptor->ListEntry);
+
+ if (!PageDescriptor->Flags.Zero)
+ UnzeroedPageCount--;
+ MmStats.NrSystemPages++;
+ MmStats.NrFreePages--;
+
+ /* Remember the page */
+ Pages[NumberOfPagesFound++] = pfn;
+ if (NumberOfPagesFound == NumberOfPages)
+ break;
+ }
+ if (NumberOfPagesFound == NumberOfPages)
+ break;
+ }
+ }
+ KeReleaseSpinLock(&PageListLock, oldIrql);
+
+ /* Zero unzero-ed pages */
+ for (i = 0; i < NumberOfPagesFound; i++)
+ {
+ pfn = Pages[i];
+ if (MmPageArray[pfn].Flags.Zero == 0)
+ {
+ MiZeroPage(pfn);
+ }
+ else
+ {
+ MmPageArray[pfn].Flags.Zero = 0;
+ }
+ }
+
+ return NumberOfPagesFound;
+}
+
NTSTATUS STDCALL
MmZeroPageThreadMain(PVOID Ignored)
{
_____
Modified: trunk/reactos/ntoskrnl/mm/mdl.c
--- trunk/reactos/ntoskrnl/mm/mdl.c 2005-01-07 15:36:40 UTC (rev
12870)
+++ trunk/reactos/ntoskrnl/mm/mdl.c 2005-01-07 16:10:48 UTC (rev
12871)
@@ -40,6 +40,7 @@
/* FUNCTIONS
*****************************************************************/
+
/*
* @unimplemented
*/
@@ -54,6 +55,7 @@
return STATUS_NOT_IMPLEMENTED;
}
+
VOID INIT_FUNCTION
MmInitializeMdlImplementation(VOID)
{
@@ -92,6 +94,7 @@
KeInitializeSpinLock(&MiMdlMappingRegionLock);
}
+
PVOID
MmGetMdlPageAddress(PMDL Mdl, PVOID Offset)
{
@@ -170,154 +173,7 @@
}
-
/*
- * @implemented
- */
-PVOID STDCALL
-MmMapLockedPages(PMDL Mdl, KPROCESSOR_MODE AccessMode)
-/*
- * FUNCTION: Maps the physical pages described by a given MDL
- * ARGUMENTS:
- * Mdl = Points to an MDL updated by MmProbeAndLockPages,
MmBuildMdlForNonPagedPool
- * or IoBuildPartialMdl.
- * AccessMode = Specifies the portion of the address space to map
the
- * pages.
- * RETURNS: The base virtual address that maps the locked pages for the
- * range described by the MDL
- *
- * If mapping into user space, pages are mapped into current address
space.
- */
-{
- PVOID Base;
- PULONG MdlPages;
- KIRQL oldIrql;
- ULONG PageCount;
- ULONG StartingOffset;
- PEPROCESS CurrentProcess;
- NTSTATUS Status;
-
- DPRINT("MmMapLockedPages(Mdl %x, AccessMode %x)\n", Mdl,
AccessMode);
-
- /* Calculate the number of pages required. */
- PageCount = PAGE_ROUND_UP(Mdl->ByteCount + Mdl->ByteOffset) /
PAGE_SIZE;
-
- if (AccessMode == UserMode)
- {
- MEMORY_AREA *Result;
- LARGE_INTEGER BoundaryAddressMultiple;
- NTSTATUS Status;
-
- /* pretty sure you can't map partial mdl's to user space */
- ASSERT(!(Mdl->MdlFlags & MDL_PARTIAL));
-
- BoundaryAddressMultiple.QuadPart = 0;
- Base = NULL;
-
- CurrentProcess = PsGetCurrentProcess();
-
- MmLockAddressSpace(&CurrentProcess->AddressSpace);
- Status = MmCreateMemoryArea(CurrentProcess,
- &CurrentProcess->AddressSpace,
- MEMORY_AREA_MDL_MAPPING,
- &Base,
- PageCount * PAGE_SIZE,
- 0, /* PAGE_READWRITE? */
- &Result,
- FALSE,
- FALSE,
- BoundaryAddressMultiple);
- MmUnlockAddressSpace(&CurrentProcess->AddressSpace);
- if (!NT_SUCCESS(Status))
- {
- if (Mdl->MdlFlags & MDL_MAPPING_CAN_FAIL)
- {
- return NULL;
- }
-
- KEBUGCHECK(0);
- /* FIXME: handle this? */
- }
-
- Mdl->Process = CurrentProcess;
- }
- else /* if (AccessMode == KernelMode) */
- {
- /* can't map mdl twice */
- ASSERT(!(Mdl->MdlFlags &
(MDL_MAPPED_TO_SYSTEM_VA|MDL_PARTIAL_HAS_BEEN_MAPPED)));
- /* can't map mdl buildt from non paged pool into kernel space */
- ASSERT(!(Mdl->MdlFlags & (MDL_SOURCE_IS_NONPAGED_POOL)));
-
- CurrentProcess = NULL;
-
- /* Allocate that number of pages from the mdl mapping region. */
- KeAcquireSpinLock(&MiMdlMappingRegionLock, &oldIrql);
-
- StartingOffset =
RtlFindClearBitsAndSet(&MiMdlMappingRegionAllocMap, PageCount,
MiMdlMappingRegionHint);
-
- if (StartingOffset == 0xffffffff)
- {
- KeReleaseSpinLock(&MiMdlMappingRegionLock, oldIrql);
-
- DPRINT1("Out of MDL mapping space\n");
-
- if (Mdl->MdlFlags & MDL_MAPPING_CAN_FAIL)
- {
- return NULL;
- }
-
- KEBUGCHECK(0);
- }
-
- Base = (PVOID)((ULONG_PTR)MiMdlMappingRegionBase + StartingOffset
* PAGE_SIZE);
-
- if (MiMdlMappingRegionHint == StartingOffset)
- {
- MiMdlMappingRegionHint += PageCount;
- }
-
- KeReleaseSpinLock(&MiMdlMappingRegionLock, oldIrql);
- }
-
-
-
- /* Set the virtual mappings for the MDL pages. */
- MdlPages = (PULONG)(Mdl + 1);
-
- Status = MmCreateVirtualMapping(CurrentProcess,
- Base,
- PAGE_READWRITE,
- MdlPages,
- PageCount);
- if (!NT_SUCCESS(Status))
- {
- DbgPrint("Unable to create virtual mapping\n");
- if (Mdl->MdlFlags & MDL_MAPPING_CAN_FAIL)
- {
- return NULL;
- }
- KEBUGCHECK(0);
- }
-
- /* Mark the MDL has having being mapped. */
- if (AccessMode == KernelMode)
- {
- if (Mdl->MdlFlags & MDL_PARTIAL)
- {
- Mdl->MdlFlags |= MDL_PARTIAL_HAS_BEEN_MAPPED;
- }
- else
- {
- Mdl->MdlFlags |= MDL_MAPPED_TO_SYSTEM_VA;
- }
- Mdl->MappedSystemVa = (char*)Base + Mdl->ByteOffset;
- }
-
- return((char*)Base + Mdl->ByteOffset);
-}
-
-
-/*
* @unimplemented
*/
PVOID
@@ -333,6 +189,7 @@
return 0;
}
+
/*
* @implemented
*/
@@ -423,6 +280,7 @@
}
+
/*
* @unimplemented
*/
@@ -447,6 +305,7 @@
Mdl->MdlFlags |= MDL_IO_PAGE_READ;
}
+
/*
* @unimplemented
*/
@@ -461,6 +320,7 @@
return STATUS_NOT_IMPLEMENTED;
}
+
/*
* @unimplemented
*/
@@ -477,7 +337,7 @@
/*
- * @unimplemented
+ * @implemented
*/
VOID STDCALL MmProbeAndLockPages (PMDL Mdl,
KPROCESSOR_MODE AccessMode,
@@ -603,6 +463,7 @@
Mdl->MdlFlags |= MDL_PAGES_LOCKED;
}
+
/*
* @unimplemented
*/
@@ -618,6 +479,7 @@
UNIMPLEMENTED;
}
+
/*
* @unimplemented
*/
@@ -633,6 +495,7 @@
UNIMPLEMENTED;
}
+
/*
* @implemented
*/
@@ -732,6 +595,7 @@
return(Mdl);
}
+
/*
* @unimplemented
*/
@@ -745,8 +609,9 @@
UNIMPLEMENTED;
}
+
/*
- * @unimplemented
+ * @implemented
*/
PMDL STDCALL
MmAllocatePagesForMdl ( IN PHYSICAL_ADDRESS LowAddress,
@@ -776,15 +641,61 @@
*/
+ PMDL Mdl;
+ PPFN_TYPE Pages;
+ ULONG NumberOfPagesWanted, NumberOfPagesAllocated;
+ ULONG Ret;
+
+ DPRINT("MmAllocatePagesForMdl - LowAddress = 0x%I64x, HighAddress =
0x%I64x, "
+ "SkipBytes = 0x%I64x, Totalbytes = 0x%x\n",
+ LowAddress.QuadPart, HighAddress.QuadPart,
+ SkipBytes.QuadPart, Totalbytes);
+
/* SkipBytes must be a multiple of the page size */
ASSERT((SkipBytes.QuadPart % PAGE_SIZE) == 0);
-
- UNIMPLEMENTED;
- return(NULL);
+
+ /* Allocate memory for the MDL */
+ Mdl = MmCreateMdl(NULL, 0, Totalbytes);
+ if (Mdl == NULL)
+ {
+ return NULL;
+ }
+
+ /* Allocate pages into the MDL */
+ NumberOfPagesAllocated = 0;
+ NumberOfPagesWanted = PAGE_ROUND_UP(Mdl->ByteCount +
Mdl->ByteOffset) / PAGE_SIZE;
+ Pages = (PPFN_TYPE)(Mdl + 1);
+ while (NumberOfPagesWanted > 0)
+ {
+ Ret = MmAllocPagesSpecifyRange(
+ MC_NPPOOL,
+ LowAddress,
+ HighAddress,
+ NumberOfPagesWanted,
+ Pages + NumberOfPagesAllocated);
+ if (Ret == -1)
+ break;
+
+ NumberOfPagesAllocated += Ret;
+ NumberOfPagesWanted -= Ret;
+
+ if (SkipBytes.QuadPart == 0)
+ break;
+ LowAddress.QuadPart += SkipBytes.QuadPart;
+ HighAddress.QuadPart += SkipBytes.QuadPart;
+ }
+
+ if (NumberOfPagesAllocated == 0)
+ {
+ ExFreePool(Mdl);
+ Mdl = NULL;
+ }
+ return Mdl;
}
+
/*
- * @unimplemented
+ * @implemented
*/
VOID STDCALL
MmFreePagesFromMdl ( IN PMDL Mdl )
@@ -801,12 +712,21 @@
Konstantin Gusev
*/
-
- UNIMPLEMENTED;
+ PPFN_TYPE Pages;
+ LONG NumberOfPages;
+
+ NumberOfPages = PAGE_ROUND_UP(Mdl->ByteCount + Mdl->ByteOffset) /
PAGE_SIZE;
+ Pages = (PPFN_TYPE)(Mdl + 1);
+
+ while (--NumberOfPages >= 0)
+ {
+ MmDereferencePage(Pages[NumberOfPages]);
+ }
}
+
/*
- * @unimplemented
+ * @implemented
*/
PVOID STDCALL
MmMapLockedPagesSpecifyCache ( IN PMDL Mdl,
@@ -814,12 +734,184 @@
IN MEMORY_CACHING_TYPE CacheType,
IN PVOID BaseAddress,
IN ULONG BugCheckOnFailure,
- IN MM_PAGE_PRIORITY Priority )
+ IN MM_PAGE_PRIORITY Priority)
{
- UNIMPLEMENTED;
- return MmMapLockedPages (Mdl, AccessMode);
+ PVOID Base;
+ PULONG MdlPages;
+ KIRQL oldIrql;
+ ULONG PageCount;
+ ULONG StartingOffset;
+ PEPROCESS CurrentProcess;
+ NTSTATUS Status;
+ ULONG Protect;
+
+ DPRINT("MmMapLockedPagesSpecifyCache(Mdl 0x%x, AccessMode 0x%x,
CacheType 0x%x, "
+ "BaseAddress 0x%x, BugCheckOnFailure 0x%x, Priority 0x%x)\n",
+ Mdl, AccessMode, CacheType, BaseAddress, BugCheckOnFailure,
Priority);
+
+ /* FIXME: Implement Priority */
+ (void) Priority;
+
+ /* Calculate the number of pages required. */
+ PageCount = PAGE_ROUND_UP(Mdl->ByteCount + Mdl->ByteOffset) /
PAGE_SIZE;
+
+ if (AccessMode == UserMode)
+ {
+ MEMORY_AREA *Result;
+ LARGE_INTEGER BoundaryAddressMultiple;
+ NTSTATUS Status;
+
+ /* pretty sure you can't map partial mdl's to user space */
+ ASSERT(!(Mdl->MdlFlags & MDL_PARTIAL));
+
+ BoundaryAddressMultiple.QuadPart = 0;
+ Base = BaseAddress;
+
+ CurrentProcess = PsGetCurrentProcess();
+
+ MmLockAddressSpace(&CurrentProcess->AddressSpace);
+ Status = MmCreateMemoryArea(CurrentProcess,
+ &CurrentProcess->AddressSpace,
+ MEMORY_AREA_MDL_MAPPING,
+ &Base,
+ PageCount * PAGE_SIZE,
+ 0, /* PAGE_READWRITE? */
+ &Result,
+ (Base != NULL),
+ FALSE,
+ BoundaryAddressMultiple);
+ MmUnlockAddressSpace(&CurrentProcess->AddressSpace);
+ if (!NT_SUCCESS(Status))
+ {
+ if (Mdl->MdlFlags & MDL_MAPPING_CAN_FAIL)
+ {
+ return NULL;
+ }
+
+ /* FIXME: Raise an exception instead of bugchecking */
+ KEBUGCHECK(0);
+ }
+
+ Mdl->Process = CurrentProcess;
+ }
+ else /* if (AccessMode == KernelMode) */
+ {
+ /* can't map mdl twice */
+ ASSERT(!(Mdl->MdlFlags &
(MDL_MAPPED_TO_SYSTEM_VA|MDL_PARTIAL_HAS_BEEN_MAPPED)));
+ /* can't map mdl buildt from non paged pool into kernel space */
+ ASSERT(!(Mdl->MdlFlags & (MDL_SOURCE_IS_NONPAGED_POOL)));
+
+ CurrentProcess = NULL;
+
+ /* Allocate that number of pages from the mdl mapping region. */
+ KeAcquireSpinLock(&MiMdlMappingRegionLock, &oldIrql);
+
+ StartingOffset =
RtlFindClearBitsAndSet(&MiMdlMappingRegionAllocMap, PageCount,
MiMdlMappingRegionHint);
+
+ if (StartingOffset == 0xffffffff)
+ {
+ KeReleaseSpinLock(&MiMdlMappingRegionLock, oldIrql);
+
+ DPRINT1("Out of MDL mapping space\n");
+
+ if ((Mdl->MdlFlags & MDL_MAPPING_CAN_FAIL) ||
!BugCheckOnFailure)
+ {
+ return NULL;
+ }
+
+ KEBUGCHECK(0);
+ }
+
+ Base = (PVOID)((ULONG_PTR)MiMdlMappingRegionBase + StartingOffset
* PAGE_SIZE);
+
+ if (MiMdlMappingRegionHint == StartingOffset)
+ {
+ MiMdlMappingRegionHint += PageCount;
+ }
+
+ KeReleaseSpinLock(&MiMdlMappingRegionLock, oldIrql);
+ }
+
+ /* Set the virtual mappings for the MDL pages. */
+ MdlPages = (PULONG)(Mdl + 1);
+
+ Protect = PAGE_READWRITE;
+ if (CacheType == MmNonCached)
+ Protect |= PAGE_NOCACHE;
+ else if (CacheType == MmWriteCombined)
+ DPRINT("CacheType MmWriteCombined not supported!\n");
+ Status = MmCreateVirtualMapping(CurrentProcess,
+ Base,
+ Protect,
+ MdlPages,
+ PageCount);
+ if (!NT_SUCCESS(Status))
+ {
+ DbgPrint("Unable to create virtual mapping\n");
+ if (Mdl->MdlFlags & MDL_MAPPING_CAN_FAIL)
+ {
+ return NULL;
+ }
+ if (AccessMode == UserMode)
+ {
+ /* FIXME: Raise an exception */
+ return NULL;
+ }
+ else /* AccessMode == KernelMode */
+ {
+ if (!BugCheckOnFailure)
+ return NULL;
+
+ /* FIXME: Use some bugcheck code instead of 0 */
+ KEBUGCHECK(0);
+ }
+ }
+
+ /* Mark the MDL has having being mapped. */
+ if (AccessMode == KernelMode)
+ {
+ if (Mdl->MdlFlags & MDL_PARTIAL)
+ {
+ Mdl->MdlFlags |= MDL_PARTIAL_HAS_BEEN_MAPPED;
+ }
+ else
+ {
+ Mdl->MdlFlags |= MDL_MAPPED_TO_SYSTEM_VA;
+ }
+ Mdl->MappedSystemVa = (char*)Base + Mdl->ByteOffset;
+ }
+
+ return((char*)Base + Mdl->ByteOffset);
}
+
+/*
+ * @implemented
+ */
+PVOID STDCALL
+MmMapLockedPages(PMDL Mdl, KPROCESSOR_MODE AccessMode)
+/*
+ * FUNCTION: Maps the physical pages described by a given MDL
+ * ARGUMENTS:
+ * Mdl = Points to an MDL updated by MmProbeAndLockPages,
MmBuildMdlForNonPagedPool,
+ * MmAllocatePagesForMdl or IoBuildPartialMdl.
+ * AccessMode = Specifies the portion of the address space to map
the
+ * pages.
+ * RETURNS: The base virtual address that maps the locked pages for the
+ * range described by the MDL
+ *
+ * If mapping into user space, pages are mapped into current address
space.
+ */
+{
+ return MmMapLockedPagesSpecifyCache(Mdl,
+ AccessMode,
+ MmCached,
+ NULL,
+ TRUE,
+ NormalPagePriority);
+}
+
+
/* EOF */
_____
Modified: trunk/reactos/ntoskrnl/po/power.c
--- trunk/reactos/ntoskrnl/po/power.c 2005-01-07 15:36:40 UTC (rev
12870)
+++ trunk/reactos/ntoskrnl/po/power.c 2005-01-07 16:10:48 UTC (rev
12871)
@@ -245,8 +245,41 @@
IN ULONG OutputBufferLength
)
{
- UNIMPLEMENTED;
- return STATUS_NOT_IMPLEMENTED;
+ NTSTATUS Status;
+
+ DPRINT("NtPowerInformation(PowerInformationLevel 0x%x, InputBuffer
0x%x, "
+ "InputBufferLength 0x%x, OutputBuffer 0x%x,
OutputBufferLength 0x%x)\n",
+ PowerInformationLevel,
+ InputBuffer, InputBufferLength,
+ OutputBuffer, OutputBufferLength);
+ switch (PowerInformationLevel)
+ {
+ case SystemBatteryState:
+ {
+ PSYSTEM_BATTERY_STATE BatteryState =
(PSYSTEM_BATTERY_STATE)OutputBuffer;
+
+ if (InputBuffer != NULL)
+ return STATUS_INVALID_PARAMETER;
+ if (OutputBufferLength < sizeof(SYSTEM_BATTERY_STATE))
+ return STATUS_BUFFER_TOO_SMALL;
+
+ /* Just zero the struct (and thus set
BatteryState->BatteryPresent = FALSE) */
+ RtlZeroMemory(BatteryState, sizeof(SYSTEM_BATTERY_STATE));
+ BatteryState->EstimatedTime = (ULONG)-1;
+
+ Status = STATUS_SUCCESS;
+ break;
+ }
+
+ default:
+ Status = STATUS_NOT_IMPLEMENTED;
+ DPRINT1("PowerInformationLevel 0x%x is UNIMPLEMENTED! Have a nice
day.\n",
+ PowerInformationLevel);
+ for (;;);
+ break;
+ }
+
+ return Status;
}
/* EOF */
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