// hidport.h

// CTL_CODE(0x000b, 0x018, METHOD_NEITHER, FILE_ANY_ACCESS)
#define IOCTL_UMDF_GET_PHYSICAL_DESCRIPTOR 0x000B0063
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Windows Driver Kit DDI reference (ni-hidport-ioctl_umdf_get_physical_descriptor)

IOCTL_UMDF_GET_PHYSICAL_DESCRIPTOR IOCTL

Description

The IOCTL_UMDF_GET_PHYSICAL_DESCRIPTOR control code obtains the physical descriptor of a HIDClass device.

Parameters

Major code

Input buffer

A UMDF-based driver obtains the size, in bytes, of the buffer by calling IWDFRequest::GetDeviceIoControlParameters and providing the pOutBufferSize parameter.

Input buffer length

Output buffer

The driver copies the physical descriptor to the user buffer that is retrieved by calling IWDFIoRequest::GetOutputMemory.

Output buffer length

The size of the buffer that is retrieved by calling IWDFIoRequest::GetOutputMemory.

Input/output buffer

Input/output buffer length

Status block

HID minidrivers that carry out the I/O to the device must also:

Call IWDFRequest::SetInformation to set the number of bytes transferred from the device.
Call IWDFRequest::Complete with S_OK to complete the request without error. Otherwise, set the appropriate HRESULT error code.

IOCTL_UMDF_GET_PHYSICAL_DESCRIPTOR - NtDoc