// dispmprt.h

NTSTATUS DlMapMemoryEx(
  IN PVOID            DeviceHandle,
  IN PHYSICAL_ADDRESS TranslatedAddress,
  IN OUT PULONG       Length,
  IN PULONG           InIoSpace,
  IN HANDLE           ProcessHandle,
  IN OUT PVOID        *VirtualAddress,
  IN BOOLEAN          MapToUserMode
);
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Windows Driver Kit DDI reference (nf-dispmprt-dlmapmemoryex)

DlMapMemoryEx function

Description

Maps a range of bus-relative physical addresses of display memory into system space or into the virtual address space of a user-mode process.

Parameters

`DeviceHandle`

A handle that represents a display adapter.

`TranslatedAddress`

`Length`

On input, specifies the number of bytes of memory to map.

`InIoSpace`

Pointer to a variable that indicates the location of the range.

`ProcessHandle`

`VirtualAddress`

Pointer to a variable that, on input, is either NULL or a handle to a user-mode process.

`MapToUserMode`

Return value

This function returns NTSTATUS.

DlMapMemoryEx - NtDoc