1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (C) 2020 Marvell International Ltd.
4 *
5 * Functions for SRIO initialization, configuration,
6 * and monitoring.
7 */
8
9#ifndef __CVMX_HELPER_SRIO_H__
10#define __CVMX_HELPER_SRIO_H__
11
12/**
13 * @INTERNAL
14 * Convert interface number to sRIO link number
15 * per SoC model.
16 *
17 * @param xiface Interface to convert
18 *
19 * Return: Srio link number
20 */
21int __cvmx_helper_srio_port(int xiface);
22
23/**
24 * @INTERNAL
25 * Probe a SRIO interface and determine the number of ports
26 * connected to it. The SRIO interface should still be down after
27 * this call.
28 *
29 * @param xiface Interface to probe
30 *
31 * Return: Number of ports on the interface. Zero to disable.
32 */
33int __cvmx_helper_srio_probe(int xiface);
34
35/**
36 * @INTERNAL
37 * Bringup and enable a SRIO interface. After this call packet
38 * I/O should be fully functional. This is called with IPD
39 * enabled but PKO disabled.
40 *
41 * @param xiface Interface to bring up
42 *
43 * Return: Zero on success, negative on failure
44 */
45int __cvmx_helper_srio_enable(int xiface);
46
47/**
48 * @INTERNAL
49 * Return the link state of an IPD/PKO port as returned by SRIO link status.
50 *
51 * @param ipd_port IPD/PKO port to query
52 *
53 * Return: Link state
54 */
55cvmx_helper_link_info_t __cvmx_helper_srio_link_get(int ipd_port);
56
57/**
58 * @INTERNAL
59 * Configure an IPD/PKO port for the specified link state. This
60 * function does not influence auto negotiation at the PHY level.
61 * The passed link state must always match the link state returned
62 * by cvmx_helper_link_get(). It is normally best to use
63 * cvmx_helper_link_autoconf() instead.
64 *
65 * @param ipd_port  IPD/PKO port to configure
66 * @param link_info The new link state
67 *
68 * Return: Zero on success, negative on failure
69 */
70int __cvmx_helper_srio_link_set(int ipd_port, cvmx_helper_link_info_t link_info);
71
72#endif
73