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/ratelimit.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 <asm/octeon/cvmx-helper.h>
39
40 #include <asm/octeon/cvmx-gmxx-defs.h>
41
cvm_oct_sgmii_open(struct net_device * dev)42 int cvm_oct_sgmii_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
60 return 0;
61 }
62
cvm_oct_sgmii_stop(struct net_device * dev)63 int cvm_oct_sgmii_stop(struct net_device *dev)
64 {
65 union cvmx_gmxx_prtx_cfg gmx_cfg;
66 struct octeon_ethernet *priv = netdev_priv(dev);
67 int interface = INTERFACE(priv->port);
68 int index = INDEX(priv->port);
69
70 gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
71 gmx_cfg.s.en = 0;
72 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
73 return 0;
74 }
75
cvm_oct_sgmii_poll(struct net_device * dev)76 static void cvm_oct_sgmii_poll(struct net_device *dev)
77 {
78 struct octeon_ethernet *priv = netdev_priv(dev);
79 cvmx_helper_link_info_t link_info;
80
81 link_info = cvmx_helper_link_get(priv->port);
82 if (link_info.u64 == priv->link_info)
83 return;
84
85 link_info = cvmx_helper_link_autoconf(priv->port);
86 priv->link_info = link_info.u64;
87
88 /* Tell Linux */
89 if (link_info.s.link_up) {
90
91 if (!netif_carrier_ok(dev))
92 netif_carrier_on(dev);
93 if (priv->queue != -1)
94 printk_ratelimited
95 ("%s: %u Mbps %s duplex, port %2d, queue %2d\n",
96 dev->name, link_info.s.speed,
97 (link_info.s.full_duplex) ? "Full" : "Half",
98 priv->port, priv->queue);
99 else
100 printk_ratelimited
101 ("%s: %u Mbps %s duplex, port %2d, POW\n",
102 dev->name, link_info.s.speed,
103 (link_info.s.full_duplex) ? "Full" : "Half",
104 priv->port);
105 } else {
106 if (netif_carrier_ok(dev))
107 netif_carrier_off(dev);
108 printk_ratelimited("%s: Link down\n", dev->name);
109 }
110 }
111
cvm_oct_sgmii_init(struct net_device * dev)112 int cvm_oct_sgmii_init(struct net_device *dev)
113 {
114 struct octeon_ethernet *priv = netdev_priv(dev);
115 cvm_oct_common_init(dev);
116 dev->netdev_ops->ndo_stop(dev);
117 if (!octeon_is_simulation() && priv->phydev == NULL)
118 priv->poll = cvm_oct_sgmii_poll;
119
120 /* FIXME: Need autoneg logic */
121 return 0;
122 }
123
cvm_oct_sgmii_uninit(struct net_device * dev)124 void cvm_oct_sgmii_uninit(struct net_device *dev)
125 {
126 cvm_oct_common_uninit(dev);
127 }
128