1 /**********************************************************************
2 * Author: Cavium Networks
3 *
4 * Contact: support@caviumnetworks.com
5 * This file is part of the OCTEON SDK
6 *
7 * Copyright (c) 2003-2007 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 **********************************************************************/
27 #include <linux/kernel.h>
28 #include <linux/netdevice.h>
29 #include <linux/mii.h>
30 #include <net/dst.h>
31
32 #include <asm/octeon/octeon.h>
33
34 #include "ethernet-defines.h"
35 #include "octeon-ethernet.h"
36 #include "ethernet-util.h"
37
38 #include "cvmx-helper.h"
39
40 #include "cvmx-gmxx-defs.h"
41
42 int cvm_oct_xaui_open(struct net_device *dev)
43 {
44 union cvmx_gmxx_prtx_cfg gmx_cfg;
45 struct octeon_ethernet *priv = netdev_priv(dev);
46 int interface = INTERFACE(priv->port);
47 int index = INDEX(priv->port);
48 cvmx_helper_link_info_t link_info;
49
50 gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
51 gmx_cfg.s.en = 1;
52 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
53
54 if (!octeon_is_simulation()) {
55 link_info = cvmx_helper_link_get(priv->port);
56 if (!link_info.s.link_up)
57 netif_carrier_off(dev);
58 }
59 return 0;
60 }
61
62 int cvm_oct_xaui_stop(struct net_device *dev)
63 {
64 union cvmx_gmxx_prtx_cfg gmx_cfg;
65 struct octeon_ethernet *priv = netdev_priv(dev);
66 int interface = INTERFACE(priv->port);
67 int index = INDEX(priv->port);
68
69 gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
70 gmx_cfg.s.en = 0;
71 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
72 return 0;
73 }
74
75 static void cvm_oct_xaui_poll(struct net_device *dev)
76 {
77 struct octeon_ethernet *priv = netdev_priv(dev);
78 cvmx_helper_link_info_t link_info;
79
80 link_info = cvmx_helper_link_get(priv->port);
81 if (link_info.u64 == priv->link_info)
82 return;
83
84 link_info = cvmx_helper_link_autoconf(priv->port);
85 priv->link_info = link_info.u64;
86
87 /* Tell Linux */
88 if (link_info.s.link_up) {
89
90 if (!netif_carrier_ok(dev))
91 netif_carrier_on(dev);
92 if (priv->queue != -1)
93 DEBUGPRINT
94 ("%s: %u Mbps %s duplex, port %2d, queue %2d\n",
95 dev->name, link_info.s.speed,
96 (link_info.s.full_duplex) ? "Full" : "Half",
97 priv->port, priv->queue);
98 else
99 DEBUGPRINT("%s: %u Mbps %s duplex, port %2d, POW\n",
100 dev->name, link_info.s.speed,
101 (link_info.s.full_duplex) ? "Full" : "Half",
102 priv->port);
103 } else {
104 if (netif_carrier_ok(dev))
105 netif_carrier_off(dev);
106 DEBUGPRINT("%s: Link down\n", dev->name);
107 }
108 }
109
110 int cvm_oct_xaui_init(struct net_device *dev)
111 {
112 struct octeon_ethernet *priv = netdev_priv(dev);
113 cvm_oct_common_init(dev);
114 dev->netdev_ops->ndo_stop(dev);
115 if (!octeon_is_simulation())
116 priv->poll = cvm_oct_xaui_poll;
117
118 return 0;
119 }
120
121 void cvm_oct_xaui_uninit(struct net_device *dev)
122 {
123 cvm_oct_common_uninit(dev);
124 }
125
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