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1 | /***********************license start*************** |
2 | * Author: Cavium Networks | |
3 | * | |
4 | * Contact: support@caviumnetworks.com | |
5 | * This file is part of the OCTEON SDK | |
6 | * | |
7 | * Copyright (c) 2003-2008 Cavium Networks | |
8 | * | |
9 | * This file is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License, Version 2, as | |
11 | * published by the Free Software Foundation. | |
12 | * | |
13 | * This file is distributed in the hope that it will be useful, but | |
14 | * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty | |
15 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or | |
16 | * NONINFRINGEMENT. See the GNU General Public License for more | |
17 | * details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this file; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
22 | * or visit http://www.gnu.org/licenses/. | |
23 | * | |
24 | * This file may also be available under a different license from Cavium. | |
25 | * Contact Cavium Networks for more information | |
26 | ***********************license end**************************************/ | |
27 | ||
28 | /* | |
29 | * Functions for SPI initialization, configuration, | |
30 | * and monitoring. | |
31 | */ | |
32 | #ifndef __CVMX_HELPER_SPI_H__ | |
33 | #define __CVMX_HELPER_SPI_H__ | |
34 | ||
35 | /** | |
36 | * Probe a SPI interface and determine the number of ports | |
37 | * connected to it. The SPI interface should still be down after | |
38 | * this call. | |
39 | * | |
40 | * @interface: Interface to probe | |
41 | * | |
42 | * Returns Number of ports on the interface. Zero to disable. | |
43 | */ | |
44 | extern int __cvmx_helper_spi_probe(int interface); | |
37d3bfd9 | 45 | extern int __cvmx_helper_spi_enumerate(int interface); |
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46 | |
47 | /** | |
48 | * Bringup and enable a SPI interface. After this call packet I/O | |
49 | * should be fully functional. This is called with IPD enabled but | |
50 | * PKO disabled. | |
51 | * | |
52 | * @interface: Interface to bring up | |
53 | * | |
54 | * Returns Zero on success, negative on failure | |
55 | */ | |
56 | extern int __cvmx_helper_spi_enable(int interface); | |
57 | ||
58 | /** | |
59 | * Return the link state of an IPD/PKO port as returned by | |
60 | * auto negotiation. The result of this function may not match | |
61 | * Octeon's link config if auto negotiation has changed since | |
62 | * the last call to cvmx_helper_link_set(). | |
63 | * | |
64 | * @ipd_port: IPD/PKO port to query | |
65 | * | |
66 | * Returns Link state | |
67 | */ | |
f7d2bdcb | 68 | extern union cvmx_helper_link_info __cvmx_helper_spi_link_get(int ipd_port); |
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69 | |
70 | /** | |
71 | * Configure an IPD/PKO port for the specified link state. This | |
72 | * function does not influence auto negotiation at the PHY level. | |
73 | * The passed link state must always match the link state returned | |
2b58a76e | 74 | * by cvmx_helper_link_get(). |
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75 | * |
76 | * @ipd_port: IPD/PKO port to configure | |
77 | * @link_info: The new link state | |
78 | * | |
79 | * Returns Zero on success, negative on failure | |
80 | */ | |
81 | extern int __cvmx_helper_spi_link_set(int ipd_port, | |
f7d2bdcb | 82 | union cvmx_helper_link_info link_info); |
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83 | |
84 | #endif |