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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2020 Marvell International Ltd.
*
* Functions for SRIO initialization, configuration,
* and monitoring.
*/
#ifndef __CVMX_HELPER_SRIO_H__
#define __CVMX_HELPER_SRIO_H__
/**
* @INTERNAL
* Convert interface number to sRIO link number
* per SoC model.
*
* @param xiface Interface to convert
*
* @return Srio link number
*/
int __cvmx_helper_srio_port(int xiface);
/**
* @INTERNAL
* Probe a SRIO interface and determine the number of ports
* connected to it. The SRIO interface should still be down after
* this call.
*
* @param xiface Interface to probe
*
* @return Number of ports on the interface. Zero to disable.
*/
int __cvmx_helper_srio_probe(int xiface);
/**
* @INTERNAL
* Bringup and enable a SRIO interface. After this call packet
* I/O should be fully functional. This is called with IPD
* enabled but PKO disabled.
*
* @param xiface Interface to bring up
*
* @return Zero on success, negative on failure
*/
int __cvmx_helper_srio_enable(int xiface);
/**
* @INTERNAL
* Return the link state of an IPD/PKO port as returned by SRIO link status.
*
* @param ipd_port IPD/PKO port to query
*
* @return Link state
*/
cvmx_helper_link_info_t __cvmx_helper_srio_link_get(int ipd_port);
/**
* @INTERNAL
* Configure an IPD/PKO port for the specified link state. This
* function does not influence auto negotiation at the PHY level.
* The passed link state must always match the link state returned
* by cvmx_helper_link_get(). It is normally best to use
* cvmx_helper_link_autoconf() instead.
*
* @param ipd_port IPD/PKO port to configure
* @param link_info The new link state
*
* @return Zero on success, negative on failure
*/
int __cvmx_helper_srio_link_set(int ipd_port, cvmx_helper_link_info_t link_info);
#endif
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