1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (C) 2020 Marvell International Ltd.
4 *
5 * Functions for LOOP initialization, configuration,
6 * and monitoring.
7 */
8
9#ifndef __CVMX_HELPER_LOOP_H__
10#define __CVMX_HELPER_LOOP_H__
11
12/**
13 * @INTERNAL
14 * Probe a LOOP interface and determine the number of ports
15 * connected to it. The LOOP interface should still be down after
16 * this call.
17 *
18 * @param xiface Interface to probe
19 *
20 * Return: Number of ports on the interface. Zero to disable.
21 */
22int __cvmx_helper_loop_probe(int xiface);
23int __cvmx_helper_loop_enumerate(int xiface);
24
25/**
26 * @INTERNAL
27 * Bringup and enable a LOOP interface. After this call packet
28 * I/O should be fully functional. This is called with IPD
29 * enabled but PKO disabled.
30 *
31 * @param xiface Interface to bring up
32 *
33 * Return: Zero on success, negative on failure
34 */
35int __cvmx_helper_loop_enable(int xiface);
36
37#endif
38