1/***********************license start***************
2 * Copyright (c) 2003-2010  Cavium Inc. (support@cavium.com). All rights
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38 ***********************license end**************************************/
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45
46/**
47 * @file
48 *
49 * Functions for SPI initialization, configuration,
50 * and monitoring.
51 *
52 * <hr>$Revision: 70030 $<hr>
53 */
54#ifndef __CVMX_HELPER_SPI_H__
55#define __CVMX_HELPER_SPI_H__
56
57/**
58 * @INTERNAL
59 * Probe a SPI interface and determine the number of ports
60 * connected to it. The SPI interface should still be down after
61 * this call.
62 *
63 * @param interface Interface to probe
64 *
65 * @return Number of ports on the interface. Zero to disable.
66 */
67extern int __cvmx_helper_spi_probe(int interface);
68extern int __cvmx_helper_spi_enumerate(int interface);
69
70/**
71 * @INTERNAL
72 * Bringup and enable a SPI interface. After this call packet I/O
73 * should be fully functional. This is called with IPD enabled but
74 * PKO disabled.
75 *
76 * @param interface Interface to bring up
77 *
78 * @return Zero on success, negative on failure
79 */
80extern int __cvmx_helper_spi_enable(int interface);
81
82/**
83 * @INTERNAL
84 * Return the link state of an IPD/PKO port as returned by
85 * auto negotiation. The result of this function may not match
86 * Octeon's link config if auto negotiation has changed since
87 * the last call to cvmx_helper_link_set().
88 *
89 * @param ipd_port IPD/PKO port to query
90 *
91 * @return Link state
92 */
93extern cvmx_helper_link_info_t __cvmx_helper_spi_link_get(int ipd_port);
94
95/**
96 * @INTERNAL
97 * Configure an IPD/PKO port for the specified link state. This
98 * function does not influence auto negotiation at the PHY level.
99 * The passed link state must always match the link state returned
100 * by cvmx_helper_link_get(). It is normally best to use
101 * cvmx_helper_link_autoconf() instead.
102 *
103 * @param ipd_port  IPD/PKO port to configure
104 * @param link_info The new link state
105 *
106 * @return Zero on success, negative on failure
107 */
108extern int __cvmx_helper_spi_link_set(int ipd_port, cvmx_helper_link_info_t link_info);
109
110#endif
111