// ucmucsispec.h

typedef enum _UCSI_USB_OPERATION_ROLE {
  UcsiUsbOperationRoleDfp = 0x1,
  UcsiUsbOperationRoleUfp = 0x2,
  UcsiUsbOperationRoleAcceptSwap = 0x4,
  UcsiUsbOperationRoleDfpAcceptSwap = 0x5,
  UcsiUsbOperationRoleUfpAcceptSwap = 0x6
} UCSI_USB_OPERATION_ROLE;
View the official Windows Driver Kit DDI reference

NtDoc

No description available.

Edit description on GitHub

Windows Driver Kit DDI reference (ne-ucmucsispec-_ucsi_usb_operation_role)

_UCSI_USB_OPERATION_ROLE enumeration

Description

Used in the SET_UOR command. The SET_UOR command is used to set the USB operation role dictated by the OS Policy Manager (OPM), for the current connection.

Constants

`UcsiUsbOperationRoleDfp:0x1`

The connector initiates swap to downstream-facing port (DFP), if not already operating in DFP mode.

`UcsiUsbOperationRoleUfp:0x2`

The connector initiates swap to upstream-facing port (UFP), if not already operating in UFP mode.

`UcsiUsbOperationRoleAcceptSwap:0x4`

The connector accepts USB operation role swap requests from the port partner. If this bit is cleared, connector rejects role swap requests from the port partner.

`UcsiUsbOperationRoleDfpAcceptSwap:0x5`

This field combines the UcsiUsbOperationRoleDfp and UcsiUsbOperationRoleAcceptSwap values.

`UcsiUsbOperationRoleUfpAcceptSwap:0x6`

This field combines the UcsiUsbOperationRoleUfp and UcsiUsbOperationRoleAcceptSwap values.

Remarks

For more information, see section 4.5.9 in the UCSI spec version 1.2.

UCSI_USB_OPERATION_ROLE - NtDoc