// ntddvdeo.h

// CTL_CODE(0x0023, 0x118, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_VIDEO_QUERY_PUBLIC_ACCESS_RANGES 0x00230460
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Windows Driver Kit DDI reference (ni-ntddvdeo-ioctl_video_query_public_access_ranges)

IOCTL_VIDEO_QUERY_PUBLIC_ACCESS_RANGES IOCTL

Description

Returns an array, possibly with one element, of address ranges used to program the adapter registers or ports directly. Support for this nonmodal request is optional.

Parameters

Major code

Input buffer

None

Input buffer length

Output buffer

The miniport driver returns an array of VIDEO_PUBLIC_ACCESS_RANGES in the VRP OutputBuffer.

Output buffer length

Input/output buffer

Input/output buffer length

Status block

If the miniport driver returns an address range or ranges, it sets the Information member of the STATUS_BLOCK structure to sizeof(VIDEO_PUBLIC_ACCESS_RANGES); otherwise, the miniport driver sets this member to zero.

IOCTL_VIDEO_QUERY_PUBLIC_ACCESS_RANGES - NtDoc