// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2006-2008 PA Semi, Inc
 *
 * Ethtool hooks for the PA Semi PWRficient onchip 1G/10G Ethernet MACs
 */


#include <linux/netdevice.h>
#include <linux/ethtool.h>
#include <linux/pci.h>

#include <asm/pasemi_dma.h>
#include "pasemi_mac.h"

static struct {
        const char str[ETH_GSTRING_LEN];
} ethtool_stats_keys[] = {
        { "rx-drops" },
        { "rx-bytes" },
        { "rx-packets" },
        { "rx-broadcast-packets" },
        { "rx-multicast-packets" },
        { "rx-crc-errors" },
        { "rx-undersize-errors" },
        { "rx-oversize-errors" },
        { "rx-short-fragment-errors" },
        { "rx-jabber-errors" },
        { "rx-64-byte-packets" },
        { "rx-65-127-byte-packets" },
        { "rx-128-255-byte-packets" },
        { "rx-256-511-byte-packets" },
        { "rx-512-1023-byte-packets" },
        { "rx-1024-1518-byte-packets" },
        { "rx-pause-frames" },
        { "tx-bytes" },
        { "tx-packets" },
        { "tx-broadcast-packets" },
        { "tx-multicast-packets" },
        { "tx-collisions" },
        { "tx-late-collisions" },
        { "tx-excessive-collisions" },
        { "tx-crc-errors" },
        { "tx-undersize-errors" },
        { "tx-oversize-errors" },
        { "tx-64-byte-packets" },
        { "tx-65-127-byte-packets" },
        { "tx-128-255-byte-packets" },
        { "tx-256-511-byte-packets" },
        { "tx-512-1023-byte-packets" },
        { "tx-1024-1518-byte-packets" },
};

static u32
pasemi_mac_ethtool_get_msglevel(struct net_device *netdev)
{
        struct pasemi_mac *mac = netdev_priv(netdev);
        return mac->msg_enable;
}

static void
pasemi_mac_ethtool_set_msglevel(struct net_device *netdev,
                                u32 level)
{
        struct pasemi_mac *mac = netdev_priv(netdev);
        mac->msg_enable = level;
}


static void
pasemi_mac_ethtool_get_ringparam(struct net_device *netdev,
                                 struct ethtool_ringparam *ering,
                                 struct kernel_ethtool_ringparam *kernel_ering,
                                 struct netlink_ext_ack *extack)
{
        struct pasemi_mac *mac = netdev_priv(netdev);

        ering->tx_max_pending = TX_RING_SIZE/2;
        ering->tx_pending = RING_USED(mac->tx)/2;
        ering->rx_max_pending = RX_RING_SIZE/4;
        ering->rx_pending = RING_USED(mac->rx)/4;
}

static int pasemi_mac_get_sset_count(struct net_device *netdev, int sset)
{
        switch (sset) {
        case ETH_SS_STATS:
                return ARRAY_SIZE(ethtool_stats_keys);
        default:
                return -EOPNOTSUPP;
        }
}

static void pasemi_mac_get_ethtool_stats(struct net_device *netdev,
                struct ethtool_stats *stats, u64 *data)
{
        struct pasemi_mac *mac = netdev_priv(netdev);
        int i;

        data[0] = pasemi_read_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if))
                        >> PAS_DMA_RXINT_RCMDSTA_DROPS_S;
        for (i = 0; i < 32; i++)
                data[1+i] = pasemi_read_mac_reg(mac->dma_if, PAS_MAC_RMON(i));
}

static void pasemi_mac_get_strings(struct net_device *netdev, u32 stringset,
                                   u8 *data)
{
        memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
}

const struct ethtool_ops pasemi_mac_ethtool_ops = {
        .get_msglevel           = pasemi_mac_ethtool_get_msglevel,
        .set_msglevel           = pasemi_mac_ethtool_set_msglevel,
        .get_link               = ethtool_op_get_link,
        .get_ringparam          = pasemi_mac_ethtool_get_ringparam,
        .get_strings            = pasemi_mac_get_strings,
        .get_sset_count         = pasemi_mac_get_sset_count,
        .get_ethtool_stats      = pasemi_mac_get_ethtool_stats,
        .get_link_ksettings     = phy_ethtool_get_link_ksettings,
        .set_link_ksettings     = phy_ethtool_set_link_ksettings,
};