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/**********************************************************************
* Author: Cavium Networks
*
* Contact: support@caviumnetworks.com
* This file is part of the OCTEON SDK
*
* Copyright (c) 2003-2007 Cavium Networks
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, Version 2, as
* published by the Free Software Foundation.
*
* This file is distributed in the hope that it will be useful, but
* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
* NONINFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this file; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
* or visit http://www.gnu.org/licenses/.
*
* This file may also be available under a different license from Cavium.
* Contact Cavium Networks for more information
**********************************************************************/
#include <linux/kernel.h>
#include <linux/ethtool.h>
#include <linux/phy.h>
#include <linux/ratelimit.h>
#include <linux/of_mdio.h>
#include <net/dst.h>
#include <asm/octeon/octeon.h>
#include "ethernet-defines.h"
#include "octeon-ethernet.h"
#include "ethernet-mdio.h"
#include "ethernet-util.h"
#include <asm/octeon/cvmx-helper-board.h>
#include <asm/octeon/cvmx-smix-defs.h>
static void cvm_oct_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
strlcpy(info->driver, "cavium-ethernet", sizeof(info->driver));
strlcpy(info->version, OCTEON_ETHERNET_VERSION, sizeof(info->version));
strlcpy(info->bus_info, "Builtin", sizeof(info->bus_info));
}
static int cvm_oct_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct octeon_ethernet *priv = netdev_priv(dev);
if (priv->phydev)
return phy_ethtool_gset(priv->phydev, cmd);
return -EINVAL;
}
static int cvm_oct_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct octeon_ethernet *priv = netdev_priv(dev);
if (!capable(CAP_NET_ADMIN))
return -EPERM;
if (priv->phydev)
return phy_ethtool_sset(priv->phydev, cmd);
return -EINVAL;
}
static int cvm_oct_nway_reset(struct net_device *dev)
{
struct octeon_ethernet *priv = netdev_priv(dev);
if (!capable(CAP_NET_ADMIN))
return -EPERM;
if (priv->phydev)
return phy_start_aneg(priv->phydev);
return -EINVAL;
}
const struct ethtool_ops cvm_oct_ethtool_ops = {
.get_drvinfo = cvm_oct_get_drvinfo,
.get_settings = cvm_oct_get_settings,
.set_settings = cvm_oct_set_settings,
.nway_reset = cvm_oct_nway_reset,
.get_link = ethtool_op_get_link,
};
/**
* cvm_oct_ioctl - IOCTL support for PHY control
* @dev: Device to change
* @rq: the request
* @cmd: the command
*
* Returns Zero on success
*/
int cvm_oct_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
struct octeon_ethernet *priv = netdev_priv(dev);
if (!netif_running(dev))
return -EINVAL;
if (!priv->phydev)
return -EINVAL;
return phy_mii_ioctl(priv->phydev, rq, cmd);
}
static void cvm_oct_note_carrier(struct octeon_ethernet *priv,
cvmx_helper_link_info_t li)
{
if (li.s.link_up) {
pr_notice_ratelimited("%s: %u Mbps %s duplex, port %d\n",
netdev_name(priv->netdev), li.s.speed,
(li.s.full_duplex) ? "Full" : "Half",
priv->port);
} else {
pr_notice_ratelimited("%s: Link down\n",
netdev_name(priv->netdev));
}
}
void cvm_oct_adjust_link(struct net_device *dev)
{
struct octeon_ethernet *priv = netdev_priv(dev);
cvmx_helper_link_info_t link_info;
if (priv->last_link != priv->phydev->link) {
priv->last_link = priv->phydev->link;
link_info.u64 = 0;
link_info.s.link_up = priv->last_link ? 1 : 0;
link_info.s.full_duplex = priv->phydev->duplex ? 1 : 0;
link_info.s.speed = priv->phydev->speed;
cvmx_helper_link_set(priv->port, link_info);
cvm_oct_note_carrier(priv, link_info);
}
}
int cvm_oct_common_stop(struct net_device *dev)
{
struct octeon_ethernet *priv = netdev_priv(dev);
cvmx_helper_link_info_t link_info;
priv->poll = NULL;
if (priv->phydev)
phy_disconnect(priv->phydev);
priv->phydev = NULL;
if (priv->last_link) {
link_info.u64 = 0;
priv->last_link = 0;
cvmx_helper_link_set(priv->port, link_info);
cvm_oct_note_carrier(priv, link_info);
}
return 0;
}
/**
* cvm_oct_phy_setup_device - setup the PHY
*
* @dev: Device to setup
*
* Returns Zero on success, negative on failure
*/
int cvm_oct_phy_setup_device(struct net_device *dev)
{
struct octeon_ethernet *priv = netdev_priv(dev);
struct device_node *phy_node;
if (!priv->of_node)
goto no_phy;
phy_node = of_parse_phandle(priv->of_node, "phy-handle", 0);
if (!phy_node)
goto no_phy;
priv->phydev = of_phy_connect(dev, phy_node, cvm_oct_adjust_link, 0,
PHY_INTERFACE_MODE_GMII);
if (priv->phydev == NULL)
return -ENODEV;
priv->last_link = 0;
phy_start_aneg(priv->phydev);
return 0;
no_phy:
/* If there is no phy, assume a direct MAC connection and that
* the link is up.
*/
netif_carrier_on(dev);
return 0;
}
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