325 lines
8.5 KiB
C
325 lines
8.5 KiB
C
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/*
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* Copyright (c) 2013 Johannes Berg <johannes@sipsolutions.net>
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*
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* This file is free software: you may copy, redistribute and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 2 of the License, or (at your
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* option) any later version.
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*
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* This file is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* This file incorporates work covered by the following copyright and
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* permission notice:
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*
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* Copyright (c) 2012 Qualcomm Atheros, Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <linux/pci.h>
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#include <linux/ip.h>
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#include <linux/tcp.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/ethtool.h>
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#include <linux/mdio.h>
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#include <linux/interrupt.h>
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#include <asm/byteorder.h>
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#include "alx.h"
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#include "reg.h"
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#include "hw.h"
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/* The order of these strings must match the order of the fields in
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* struct alx_hw_stats
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* See hw.h
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*/
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static const char alx_gstrings_stats[][ETH_GSTRING_LEN] = {
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"rx_packets",
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"rx_bcast_packets",
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"rx_mcast_packets",
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"rx_pause_packets",
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"rx_ctrl_packets",
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"rx_fcs_errors",
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"rx_length_errors",
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"rx_bytes",
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"rx_runt_packets",
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"rx_fragments",
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"rx_64B_or_less_packets",
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"rx_65B_to_127B_packets",
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"rx_128B_to_255B_packets",
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"rx_256B_to_511B_packets",
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"rx_512B_to_1023B_packets",
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"rx_1024B_to_1518B_packets",
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"rx_1519B_to_mtu_packets",
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"rx_oversize_packets",
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"rx_rxf_ov_drop_packets",
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"rx_rrd_ov_drop_packets",
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"rx_align_errors",
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"rx_bcast_bytes",
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"rx_mcast_bytes",
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"rx_address_errors",
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"tx_packets",
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"tx_bcast_packets",
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"tx_mcast_packets",
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"tx_pause_packets",
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"tx_exc_defer_packets",
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"tx_ctrl_packets",
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"tx_defer_packets",
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"tx_bytes",
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"tx_64B_or_less_packets",
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"tx_65B_to_127B_packets",
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"tx_128B_to_255B_packets",
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"tx_256B_to_511B_packets",
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"tx_512B_to_1023B_packets",
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"tx_1024B_to_1518B_packets",
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"tx_1519B_to_mtu_packets",
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"tx_single_collision",
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"tx_multiple_collisions",
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"tx_late_collision",
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"tx_abort_collision",
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"tx_underrun",
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"tx_trd_eop",
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"tx_length_errors",
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"tx_trunc_packets",
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"tx_bcast_bytes",
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"tx_mcast_bytes",
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"tx_update",
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};
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#define ALX_NUM_STATS ARRAY_SIZE(alx_gstrings_stats)
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static u32 alx_get_supported_speeds(struct alx_hw *hw)
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{
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u32 supported = SUPPORTED_10baseT_Half |
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SUPPORTED_10baseT_Full |
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SUPPORTED_100baseT_Half |
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SUPPORTED_100baseT_Full;
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if (alx_hw_giga(hw))
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supported |= SUPPORTED_1000baseT_Full;
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BUILD_BUG_ON(SUPPORTED_10baseT_Half != ADVERTISED_10baseT_Half);
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BUILD_BUG_ON(SUPPORTED_10baseT_Full != ADVERTISED_10baseT_Full);
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BUILD_BUG_ON(SUPPORTED_100baseT_Half != ADVERTISED_100baseT_Half);
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BUILD_BUG_ON(SUPPORTED_100baseT_Full != ADVERTISED_100baseT_Full);
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BUILD_BUG_ON(SUPPORTED_1000baseT_Full != ADVERTISED_1000baseT_Full);
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return supported;
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}
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static int alx_get_link_ksettings(struct net_device *netdev,
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struct ethtool_link_ksettings *cmd)
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{
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struct alx_priv *alx = netdev_priv(netdev);
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struct alx_hw *hw = &alx->hw;
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u32 supported, advertising;
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supported = SUPPORTED_Autoneg |
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SUPPORTED_TP |
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SUPPORTED_Pause |
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SUPPORTED_Asym_Pause;
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if (alx_hw_giga(hw))
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supported |= SUPPORTED_1000baseT_Full;
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supported |= alx_get_supported_speeds(hw);
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advertising = ADVERTISED_TP;
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if (hw->adv_cfg & ADVERTISED_Autoneg)
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advertising |= hw->adv_cfg;
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cmd->base.port = PORT_TP;
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cmd->base.phy_address = 0;
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if (hw->adv_cfg & ADVERTISED_Autoneg)
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cmd->base.autoneg = AUTONEG_ENABLE;
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else
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cmd->base.autoneg = AUTONEG_DISABLE;
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if (hw->flowctrl & ALX_FC_ANEG && hw->adv_cfg & ADVERTISED_Autoneg) {
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if (hw->flowctrl & ALX_FC_RX) {
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advertising |= ADVERTISED_Pause;
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if (!(hw->flowctrl & ALX_FC_TX))
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advertising |= ADVERTISED_Asym_Pause;
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} else if (hw->flowctrl & ALX_FC_TX) {
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advertising |= ADVERTISED_Asym_Pause;
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}
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}
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cmd->base.speed = hw->link_speed;
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cmd->base.duplex = hw->duplex;
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ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
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supported);
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ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
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advertising);
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return 0;
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}
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static int alx_set_link_ksettings(struct net_device *netdev,
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const struct ethtool_link_ksettings *cmd)
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{
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struct alx_priv *alx = netdev_priv(netdev);
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struct alx_hw *hw = &alx->hw;
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u32 adv_cfg;
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u32 advertising;
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ASSERT_RTNL();
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ethtool_convert_link_mode_to_legacy_u32(&advertising,
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cmd->link_modes.advertising);
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if (cmd->base.autoneg == AUTONEG_ENABLE) {
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if (advertising & ~alx_get_supported_speeds(hw))
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return -EINVAL;
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adv_cfg = advertising | ADVERTISED_Autoneg;
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} else {
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adv_cfg = alx_speed_to_ethadv(cmd->base.speed,
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cmd->base.duplex);
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if (!adv_cfg || adv_cfg == ADVERTISED_1000baseT_Full)
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return -EINVAL;
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}
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hw->adv_cfg = adv_cfg;
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return alx_setup_speed_duplex(hw, adv_cfg, hw->flowctrl);
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}
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static void alx_get_pauseparam(struct net_device *netdev,
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struct ethtool_pauseparam *pause)
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{
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struct alx_priv *alx = netdev_priv(netdev);
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struct alx_hw *hw = &alx->hw;
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pause->autoneg = !!(hw->flowctrl & ALX_FC_ANEG &&
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hw->adv_cfg & ADVERTISED_Autoneg);
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pause->tx_pause = !!(hw->flowctrl & ALX_FC_TX);
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pause->rx_pause = !!(hw->flowctrl & ALX_FC_RX);
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}
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static int alx_set_pauseparam(struct net_device *netdev,
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struct ethtool_pauseparam *pause)
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{
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struct alx_priv *alx = netdev_priv(netdev);
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struct alx_hw *hw = &alx->hw;
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int err = 0;
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bool reconfig_phy = false;
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u8 fc = 0;
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if (pause->tx_pause)
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fc |= ALX_FC_TX;
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if (pause->rx_pause)
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fc |= ALX_FC_RX;
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if (pause->autoneg)
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fc |= ALX_FC_ANEG;
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ASSERT_RTNL();
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/* restart auto-neg for auto-mode */
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if (hw->adv_cfg & ADVERTISED_Autoneg) {
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if (!((fc ^ hw->flowctrl) & ALX_FC_ANEG))
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reconfig_phy = true;
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if (fc & hw->flowctrl & ALX_FC_ANEG &&
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(fc ^ hw->flowctrl) & (ALX_FC_RX | ALX_FC_TX))
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reconfig_phy = true;
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}
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if (reconfig_phy) {
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err = alx_setup_speed_duplex(hw, hw->adv_cfg, fc);
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if (err)
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return err;
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}
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/* flow control on mac */
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if ((fc ^ hw->flowctrl) & (ALX_FC_RX | ALX_FC_TX))
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alx_cfg_mac_flowcontrol(hw, fc);
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hw->flowctrl = fc;
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return 0;
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}
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static u32 alx_get_msglevel(struct net_device *netdev)
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{
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struct alx_priv *alx = netdev_priv(netdev);
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return alx->msg_enable;
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}
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static void alx_set_msglevel(struct net_device *netdev, u32 data)
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{
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struct alx_priv *alx = netdev_priv(netdev);
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alx->msg_enable = data;
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}
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static void alx_get_ethtool_stats(struct net_device *netdev,
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struct ethtool_stats *estats, u64 *data)
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{
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struct alx_priv *alx = netdev_priv(netdev);
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struct alx_hw *hw = &alx->hw;
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spin_lock(&alx->stats_lock);
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alx_update_hw_stats(hw);
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BUILD_BUG_ON(sizeof(hw->stats) - offsetof(struct alx_hw_stats, rx_ok) <
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ALX_NUM_STATS * sizeof(u64));
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memcpy(data, &hw->stats.rx_ok, ALX_NUM_STATS * sizeof(u64));
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spin_unlock(&alx->stats_lock);
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}
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static void alx_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
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{
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switch (stringset) {
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case ETH_SS_STATS:
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memcpy(buf, &alx_gstrings_stats, sizeof(alx_gstrings_stats));
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break;
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default:
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WARN_ON(1);
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break;
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}
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}
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static int alx_get_sset_count(struct net_device *netdev, int sset)
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{
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switch (sset) {
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case ETH_SS_STATS:
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return ALX_NUM_STATS;
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default:
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return -EINVAL;
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}
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}
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const struct ethtool_ops alx_ethtool_ops = {
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.get_pauseparam = alx_get_pauseparam,
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.set_pauseparam = alx_set_pauseparam,
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.get_msglevel = alx_get_msglevel,
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.set_msglevel = alx_set_msglevel,
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.get_link = ethtool_op_get_link,
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.get_strings = alx_get_strings,
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.get_sset_count = alx_get_sset_count,
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.get_ethtool_stats = alx_get_ethtool_stats,
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.get_link_ksettings = alx_get_link_ksettings,
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.set_link_ksettings = alx_set_link_ksettings,
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};
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