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  * @file
30  *
31  * Functions for RGMII/GMII/MII initialization, configuration,
32  * and monitoring.
33  *
34  */
35 #ifndef __CVMX_HELPER_RGMII_H__
36 #define __CVMX_HELPER_RGMII_H__
37 
38 /**
39  * Probe RGMII ports and determine the number present
40  *
41  * @interface: Interface to probe
42  *
43  * Returns Number of RGMII/GMII/MII ports (0-4).
44  */
45 extern int __cvmx_helper_rgmii_probe(int interface);
46 #define __cvmx_helper_rgmii_enumerate __cvmx_helper_rgmii_probe
47 
48 /**
49  * Put an RGMII interface in loopback mode. Internal packets sent
50  * out will be received back again on the same port. Externally
51  * received packets will echo back out.
52  *
53  * @port:   IPD port number to loop.
54  */
55 extern void cvmx_helper_rgmii_internal_loopback(int port);
56 
57 /**
58  * Configure all of the ASX, GMX, and PKO registers required
59  * to get RGMII to function on the supplied interface.
60  *
61  * @interface: PKO Interface to configure (0 or 1)
62  *
63  * Returns Zero on success
64  */
65 extern int __cvmx_helper_rgmii_enable(int interface);
66 
67 /**
68  * Return the link state of an IPD/PKO port as returned by
69  * auto negotiation. The result of this function may not match
70  * Octeon's link config if auto negotiation has changed since
71  * the last call to cvmx_helper_link_set().
72  *
73  * @ipd_port: IPD/PKO port to query
74  *
75  * Returns Link state
76  */
77 extern cvmx_helper_link_info_t __cvmx_helper_rgmii_link_get(int ipd_port);
78 
79 /**
80  * Configure an IPD/PKO port for the specified link state. This
81  * function does not influence auto negotiation at the PHY level.
82  * The passed link state must always match the link state returned
83  * by cvmx_helper_link_get().
84  *
85  * @ipd_port:  IPD/PKO port to configure
86  * @link_info: The new link state
87  *
88  * Returns Zero on success, negative on failure
89  */
90 extern int __cvmx_helper_rgmii_link_set(int ipd_port,
91 					cvmx_helper_link_info_t link_info);
92 
93 /**
94  * Configure a port for internal and/or external loopback. Internal loopback
95  * causes packets sent by the port to be received by Octeon. External loopback
96  * causes packets received from the wire to sent out again.
97  *
98  * @ipd_port: IPD/PKO port to loopback.
99  * @enable_internal:
100  *		   Non zero if you want internal loopback
101  * @enable_external:
102  *		   Non zero if you want external loopback
103  *
104  * Returns Zero on success, negative on failure.
105  */
106 extern int __cvmx_helper_rgmii_configure_loopback(int ipd_port,
107 						  int enable_internal,
108 						  int enable_external);
109 
110 #endif
111