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