// dispmprt.h

VP_STATUS DlMapMemory(
  IN PVOID            DeviceHandle,
  IN PHYSICAL_ADDRESS TranslatedAddress,
  IN OUT PULONG       Length,
  IN PULONG           InIoSpace,
  IN OUT PVOID        *VirtualAddress
);
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Windows Driver Kit DDI reference (nf-dispmprt-dlmapmemory)

DlMapMemory 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`

The bus-relative base address of the range to map.

`Length`

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

`InIoSpace`

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

`VirtualAddress`

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

Return value

This function returns VP_STATUS.

DlMapMemory - NtDoc