ethernet-xaui.c revision 213150 
1/*************************************************************************
2Copyright (c) 2003-2007  Cavium Networks (support@cavium.com). All rights
3reserved.
4
5
6Redistribution and use in source and binary forms, with or without
7modification, are permitted provided that the following conditions are
8met:
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10    * Redistributions of source code must retain the above copyright
11      notice, this list of conditions and the following disclaimer.
12
13    * Redistributions in binary form must reproduce the above
14      copyright notice, this list of conditions and the following
15      disclaimer in the documentation and/or other materials provided
16      with the distribution.
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18    * Neither the name of Cavium Networks nor the names of
19      its contributors may be used to endorse or promote products
20      derived from this software without specific prior written
21      permission.
22
23This Software, including technical data, may be subject to U.S. export  control laws, including the U.S. Export Administration Act and its  associated regulations, and may be subject to export or import  regulations in other countries.
24
25TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
26AND WITH ALL FAULTS AND CAVIUM  NETWORKS MAKES NO PROMISES, REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE  RISK ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
27
28*************************************************************************/
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: head/sys/mips/cavium/octe/ethernet-xaui.c 213150 2010-09-25 01:18:01Z jmallett $");
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/bus.h>
36#include <sys/endian.h>
37#include <sys/kernel.h>
38#include <sys/mbuf.h>
39#include <sys/socket.h>
40
41#include <net/ethernet.h>
42#include <net/if.h>
43
44#include "wrapper-cvmx-includes.h"
45#include "ethernet-headers.h"
46
47extern int octeon_is_simulation(void);
48
49static int cvm_oct_xaui_open(struct ifnet *ifp)
50{
51	cvmx_gmxx_prtx_cfg_t gmx_cfg;
52	cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc;
53	int interface = INTERFACE(priv->port);
54	int index = INDEX(priv->port);
55	cvmx_helper_link_info_t link_info;
56
57	gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
58	gmx_cfg.s.en = 1;
59	cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
60
61	if (!octeon_is_simulation()) {
62	     link_info = cvmx_helper_link_get(priv->port);
63	     if (!link_info.s.link_up)
64		if_link_state_change(ifp, LINK_STATE_DOWN);
65	     else
66		if_link_state_change(ifp, LINK_STATE_UP);
67	}
68	return 0;
69}
70
71static int cvm_oct_xaui_stop(struct ifnet *ifp)
72{
73	cvmx_gmxx_prtx_cfg_t gmx_cfg;
74	cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc;
75	int interface = INTERFACE(priv->port);
76	int index = INDEX(priv->port);
77
78	gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
79	gmx_cfg.s.en = 0;
80	cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
81	return 0;
82}
83
84static void cvm_oct_xaui_poll(struct ifnet *ifp)
85{
86	cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc;
87	cvmx_helper_link_info_t link_info;
88
89	link_info = cvmx_helper_link_get(priv->port);
90	if (link_info.u64 == priv->link_info)
91		return;
92
93	link_info = cvmx_helper_link_autoconf(priv->port);
94	priv->link_info = link_info.u64;
95	priv->need_link_update = 1;
96}
97
98
99int cvm_oct_xaui_init(struct ifnet *ifp)
100{
101	cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc;
102	cvm_oct_common_init(ifp);
103	priv->open = cvm_oct_xaui_open;
104	priv->stop = cvm_oct_xaui_stop;
105	priv->stop(ifp);
106	if (!octeon_is_simulation())
107		priv->poll = cvm_oct_xaui_poll;
108
109    return 0;
110}
111
112void cvm_oct_xaui_uninit(struct ifnet *ifp)
113{
114	cvm_oct_common_uninit(ifp);
115}
116
117