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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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49682864b0
Not all pasemi mac interfaces can have a phy attached. For example, XAUI has no phy and phydev is NULL for it. In this case ethtool get settings causes kernel crash. Fix it by returning -EOPNOTSUPP if there's no PHY attached. Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: David S. Miller <davem@davemloft.net>
163 lines
4.4 KiB
C
163 lines
4.4 KiB
C
/*
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* Copyright (C) 2006-2008 PA Semi, Inc
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*
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* Ethtool hooks for the PA Semi PWRficient onchip 1G/10G Ethernet MACs
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/netdevice.h>
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#include <linux/ethtool.h>
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#include <linux/pci.h>
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#include <linux/inet_lro.h>
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#include <asm/pasemi_dma.h>
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#include "pasemi_mac.h"
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static struct {
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const char str[ETH_GSTRING_LEN];
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} ethtool_stats_keys[] = {
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{ "rx-drops" },
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{ "rx-bytes" },
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{ "rx-packets" },
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{ "rx-broadcast-packets" },
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{ "rx-multicast-packets" },
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{ "rx-crc-errors" },
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{ "rx-undersize-errors" },
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{ "rx-oversize-errors" },
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{ "rx-short-fragment-errors" },
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{ "rx-jabber-errors" },
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{ "rx-64-byte-packets" },
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{ "rx-65-127-byte-packets" },
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{ "rx-128-255-byte-packets" },
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{ "rx-256-511-byte-packets" },
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{ "rx-512-1023-byte-packets" },
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{ "rx-1024-1518-byte-packets" },
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{ "rx-pause-frames" },
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{ "tx-bytes" },
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{ "tx-packets" },
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{ "tx-broadcast-packets" },
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{ "tx-multicast-packets" },
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{ "tx-collisions" },
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{ "tx-late-collisions" },
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{ "tx-excessive-collisions" },
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{ "tx-crc-errors" },
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{ "tx-undersize-errors" },
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{ "tx-oversize-errors" },
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{ "tx-64-byte-packets" },
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{ "tx-65-127-byte-packets" },
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{ "tx-128-255-byte-packets" },
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{ "tx-256-511-byte-packets" },
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{ "tx-512-1023-byte-packets" },
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{ "tx-1024-1518-byte-packets" },
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};
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static int
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pasemi_mac_ethtool_get_settings(struct net_device *netdev,
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struct ethtool_cmd *cmd)
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{
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struct pasemi_mac *mac = netdev_priv(netdev);
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struct phy_device *phydev = mac->phydev;
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if (!phydev)
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return -EOPNOTSUPP;
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return phy_ethtool_gset(phydev, cmd);
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}
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static void
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pasemi_mac_ethtool_get_drvinfo(struct net_device *netdev,
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struct ethtool_drvinfo *drvinfo)
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{
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struct pasemi_mac *mac;
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mac = netdev_priv(netdev);
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/* clear and fill out info */
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memset(drvinfo, 0, sizeof(struct ethtool_drvinfo));
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strncpy(drvinfo->driver, "pasemi_mac", 12);
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strcpy(drvinfo->version, "N/A");
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strcpy(drvinfo->fw_version, "N/A");
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strncpy(drvinfo->bus_info, pci_name(mac->pdev), 32);
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}
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static u32
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pasemi_mac_ethtool_get_msglevel(struct net_device *netdev)
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{
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struct pasemi_mac *mac = netdev_priv(netdev);
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return mac->msg_enable;
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}
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static void
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pasemi_mac_ethtool_set_msglevel(struct net_device *netdev,
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u32 level)
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{
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struct pasemi_mac *mac = netdev_priv(netdev);
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mac->msg_enable = level;
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}
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static void
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pasemi_mac_ethtool_get_ringparam(struct net_device *netdev,
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struct ethtool_ringparam *ering)
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{
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struct pasemi_mac *mac = netdev_priv(netdev);
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ering->tx_max_pending = TX_RING_SIZE/2;
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ering->tx_pending = RING_USED(mac->tx)/2;
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ering->rx_max_pending = RX_RING_SIZE/4;
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ering->rx_pending = RING_USED(mac->rx)/4;
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}
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static int pasemi_mac_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 ARRAY_SIZE(ethtool_stats_keys);
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default:
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return -EOPNOTSUPP;
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}
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}
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static void pasemi_mac_get_ethtool_stats(struct net_device *netdev,
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struct ethtool_stats *stats, u64 *data)
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{
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struct pasemi_mac *mac = netdev_priv(netdev);
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int i;
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data[0] = pasemi_read_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if))
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>> PAS_DMA_RXINT_RCMDSTA_DROPS_S;
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for (i = 0; i < 32; i++)
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data[1+i] = pasemi_read_mac_reg(mac->dma_if, PAS_MAC_RMON(i));
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}
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static void pasemi_mac_get_strings(struct net_device *netdev, u32 stringset,
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u8 *data)
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{
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memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
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}
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const struct ethtool_ops pasemi_mac_ethtool_ops = {
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.get_settings = pasemi_mac_ethtool_get_settings,
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.get_drvinfo = pasemi_mac_ethtool_get_drvinfo,
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.get_msglevel = pasemi_mac_ethtool_get_msglevel,
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.set_msglevel = pasemi_mac_ethtool_set_msglevel,
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.get_link = ethtool_op_get_link,
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.get_ringparam = pasemi_mac_ethtool_get_ringparam,
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.get_strings = pasemi_mac_get_strings,
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.get_sset_count = pasemi_mac_get_sset_count,
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.get_ethtool_stats = pasemi_mac_get_ethtool_stats,
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};
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