// ucmtcpciportcontrollerrequests.h

// CTL_CODE(0x0058, 0x013, METHOD_BUFFERED, FILE_WRITE_ACCESS)
#define IOCTL_UCMTCPCI_PORT_CONTROLLER_SET_MESSAGE_HEADER_INFO 0x0058804C
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Windows Driver Kit DDI reference (ni-ucmtcpciportcontrollerrequests-ioctl_ucmtcpci_port_controller_set_message_header_info)

IOCTL_UCMTCPCI_PORT_CONTROLLER_SET_MESSAGE_HEADER_INFO IOCTL

Description

Sets the value of the MESSAGE_HEADER_INFO Register defined as per the Universal Serial Bus Type-C Port Controller Interface Specification.

Parameters

Major code

Input buffer

A pointer to a UCMTCPCI_PORT_CONTROLLER_SET_MESSAGE_HEADER_INFO_IN_PARAMS structure. To get the structure, call WdfRequestRetrieveInputBuffer by passing the received framework request object.

Input buffer length

The size of the UCMTCPCI_PORT_CONTROLLER_SET_MESSAGE_HEADER_INFO_IN_PARAMS structure.

Output buffer

Output buffer length

Input/output buffer

Input/output buffer length

Status block

Irp->IoStatus.Status is set to STATUS_SUCCESS if the request is successful. Otherwise, Status to the appropriate error condition as a NTSTATUS code.

Remarks

The UcmTcpciCx class extension sends this IOCTL request to set the value of the VBUS_VOLTAGE_ALARM_LO_CFG Register. The value to set is provided in the supplied structure. After setting the value in the register, client driver must call WdfRequestComplete to complete the request.

IOCTL_UCMTCPCI_PORT_CONTROLLER_SET_MESSAGE_HEADER_INFO - NtDoc