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linux/drivers/net/ethernet/atheros/alx/ethtool.c

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/*
* Copyright (c) 2013 Johannes Berg <johannes@sipsolutions.net>
*
* This file is free software: you may copy, redistribute and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 2 of the License, or (at your
* option) any later version.
*
* This file is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* Copyright (c) 2012 Qualcomm Atheros, Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/pci.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/mdio.h>
#include <linux/interrupt.h>
#include <asm/byteorder.h>
#include "alx.h"
#include "reg.h"
#include "hw.h"
/* The order of these strings must match the order of the fields in
* struct alx_hw_stats
* See hw.h
*/
static const char alx_gstrings_stats[][ETH_GSTRING_LEN] = {
"rx_packets",
"rx_bcast_packets",
"rx_mcast_packets",
"rx_pause_packets",
"rx_ctrl_packets",
"rx_fcs_errors",
"rx_length_errors",
"rx_bytes",
"rx_runt_packets",
"rx_fragments",
"rx_64B_or_less_packets",
"rx_65B_to_127B_packets",
"rx_128B_to_255B_packets",
"rx_256B_to_511B_packets",
"rx_512B_to_1023B_packets",
"rx_1024B_to_1518B_packets",
"rx_1519B_to_mtu_packets",
"rx_oversize_packets",
"rx_rxf_ov_drop_packets",
"rx_rrd_ov_drop_packets",
"rx_align_errors",
"rx_bcast_bytes",
"rx_mcast_bytes",
"rx_address_errors",
"tx_packets",
"tx_bcast_packets",
"tx_mcast_packets",
"tx_pause_packets",
"tx_exc_defer_packets",
"tx_ctrl_packets",
"tx_defer_packets",
"tx_bytes",
"tx_64B_or_less_packets",
"tx_65B_to_127B_packets",
"tx_128B_to_255B_packets",
"tx_256B_to_511B_packets",
"tx_512B_to_1023B_packets",
"tx_1024B_to_1518B_packets",
"tx_1519B_to_mtu_packets",
"tx_single_collision",
"tx_multiple_collisions",
"tx_late_collision",
"tx_abort_collision",
"tx_underrun",
"tx_trd_eop",
"tx_length_errors",
"tx_trunc_packets",
"tx_bcast_bytes",
"tx_mcast_bytes",
"tx_update",
};
#define ALX_NUM_STATS ARRAY_SIZE(alx_gstrings_stats)
static u32 alx_get_supported_speeds(struct alx_hw *hw)
{
u32 supported = SUPPORTED_10baseT_Half |
SUPPORTED_10baseT_Full |
SUPPORTED_100baseT_Half |
SUPPORTED_100baseT_Full;
if (alx_hw_giga(hw))
supported |= SUPPORTED_1000baseT_Full;
BUILD_BUG_ON(SUPPORTED_10baseT_Half != ADVERTISED_10baseT_Half);
BUILD_BUG_ON(SUPPORTED_10baseT_Full != ADVERTISED_10baseT_Full);
BUILD_BUG_ON(SUPPORTED_100baseT_Half != ADVERTISED_100baseT_Half);
BUILD_BUG_ON(SUPPORTED_100baseT_Full != ADVERTISED_100baseT_Full);
BUILD_BUG_ON(SUPPORTED_1000baseT_Full != ADVERTISED_1000baseT_Full);
return supported;
}
static int alx_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
{
struct alx_priv *alx = netdev_priv(netdev);
struct alx_hw *hw = &alx->hw;
ecmd->supported = SUPPORTED_Autoneg |
SUPPORTED_TP |
SUPPORTED_Pause |
SUPPORTED_Asym_Pause;
if (alx_hw_giga(hw))
ecmd->supported |= SUPPORTED_1000baseT_Full;
ecmd->supported |= alx_get_supported_speeds(hw);
ecmd->advertising = ADVERTISED_TP;
if (hw->adv_cfg & ADVERTISED_Autoneg)
ecmd->advertising |= hw->adv_cfg;
ecmd->port = PORT_TP;
ecmd->phy_address = 0;
if (hw->adv_cfg & ADVERTISED_Autoneg)
ecmd->autoneg = AUTONEG_ENABLE;
else
ecmd->autoneg = AUTONEG_DISABLE;
ecmd->transceiver = XCVR_INTERNAL;
if (hw->flowctrl & ALX_FC_ANEG && hw->adv_cfg & ADVERTISED_Autoneg) {
if (hw->flowctrl & ALX_FC_RX) {
ecmd->advertising |= ADVERTISED_Pause;
if (!(hw->flowctrl & ALX_FC_TX))
ecmd->advertising |= ADVERTISED_Asym_Pause;
} else if (hw->flowctrl & ALX_FC_TX) {
ecmd->advertising |= ADVERTISED_Asym_Pause;
}
}
ethtool_cmd_speed_set(ecmd, hw->link_speed);
ecmd->duplex = hw->duplex;
return 0;
}
static int alx_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
{
struct alx_priv *alx = netdev_priv(netdev);
struct alx_hw *hw = &alx->hw;
u32 adv_cfg;
ASSERT_RTNL();
if (ecmd->autoneg == AUTONEG_ENABLE) {
if (ecmd->advertising & ~alx_get_supported_speeds(hw))
return -EINVAL;
adv_cfg = ecmd->advertising | ADVERTISED_Autoneg;
} else {
adv_cfg = alx_speed_to_ethadv(ethtool_cmd_speed(ecmd),
ecmd->duplex);
if (!adv_cfg || adv_cfg == ADVERTISED_1000baseT_Full)
return -EINVAL;
}
hw->adv_cfg = adv_cfg;
return alx_setup_speed_duplex(hw, adv_cfg, hw->flowctrl);
}
static void alx_get_pauseparam(struct net_device *netdev,
struct ethtool_pauseparam *pause)
{
struct alx_priv *alx = netdev_priv(netdev);
struct alx_hw *hw = &alx->hw;
pause->autoneg = !!(hw->flowctrl & ALX_FC_ANEG &&
hw->adv_cfg & ADVERTISED_Autoneg);
pause->tx_pause = !!(hw->flowctrl & ALX_FC_TX);
pause->rx_pause = !!(hw->flowctrl & ALX_FC_RX);
}
static int alx_set_pauseparam(struct net_device *netdev,
struct ethtool_pauseparam *pause)
{
struct alx_priv *alx = netdev_priv(netdev);
struct alx_hw *hw = &alx->hw;
int err = 0;
bool reconfig_phy = false;
u8 fc = 0;
if (pause->tx_pause)
fc |= ALX_FC_TX;
if (pause->rx_pause)
fc |= ALX_FC_RX;
if (pause->autoneg)
fc |= ALX_FC_ANEG;
ASSERT_RTNL();
/* restart auto-neg for auto-mode */
if (hw->adv_cfg & ADVERTISED_Autoneg) {
if (!((fc ^ hw->flowctrl) & ALX_FC_ANEG))
reconfig_phy = true;
if (fc & hw->flowctrl & ALX_FC_ANEG &&
(fc ^ hw->flowctrl) & (ALX_FC_RX | ALX_FC_TX))
reconfig_phy = true;
}
if (reconfig_phy) {
err = alx_setup_speed_duplex(hw, hw->adv_cfg, fc);
if (err)
return err;
}
/* flow control on mac */
if ((fc ^ hw->flowctrl) & (ALX_FC_RX | ALX_FC_TX))
alx_cfg_mac_flowcontrol(hw, fc);
hw->flowctrl = fc;
return 0;
}
static u32 alx_get_msglevel(struct net_device *netdev)
{
struct alx_priv *alx = netdev_priv(netdev);
return alx->msg_enable;
}
static void alx_set_msglevel(struct net_device *netdev, u32 data)
{
struct alx_priv *alx = netdev_priv(netdev);
alx->msg_enable = data;
}
static void alx_get_ethtool_stats(struct net_device *netdev,
struct ethtool_stats *estats, u64 *data)
{
struct alx_priv *alx = netdev_priv(netdev);
struct alx_hw *hw = &alx->hw;
spin_lock(&alx->stats_lock);
alx_update_hw_stats(hw);
BUILD_BUG_ON(sizeof(hw->stats) - offsetof(struct alx_hw_stats, rx_ok) <
ALX_NUM_STATS * sizeof(u64));
memcpy(data, &hw->stats.rx_ok, ALX_NUM_STATS * sizeof(u64));
spin_unlock(&alx->stats_lock);
}
static void alx_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
{
switch (stringset) {
case ETH_SS_STATS:
memcpy(buf, &alx_gstrings_stats, sizeof(alx_gstrings_stats));
break;
default:
WARN_ON(1);
break;
}
}
static int alx_get_sset_count(struct net_device *netdev, int sset)
{
switch (sset) {
case ETH_SS_STATS:
return ALX_NUM_STATS;
default:
return -EINVAL;
}
}
const struct ethtool_ops alx_ethtool_ops = {
.get_settings = alx_get_settings,
.set_settings = alx_set_settings,
.get_pauseparam = alx_get_pauseparam,
.set_pauseparam = alx_set_pauseparam,
.get_msglevel = alx_get_msglevel,
.set_msglevel = alx_set_msglevel,
.get_link = ethtool_op_get_link,
.get_strings = alx_get_strings,
.get_sset_count = alx_get_sset_count,
.get_ethtool_stats = alx_get_ethtool_stats,
};
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