/*
 * Network device driver for Cell Processor-Based Blade
 *
 * (C) Copyright IBM Corp. 2005
 *
 * Authors : Utz Bacher <utz.bacher@de.ibm.com>
 *           Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program 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, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

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

#include "spider_net.h"


static struct {
        const char str[ETH_GSTRING_LEN];
} ethtool_stats_keys[] = {
        { "tx_packets" },
        { "tx_bytes" },
        { "rx_packets" },
        { "rx_bytes" },
        { "tx_errors" },
        { "tx_dropped" },
        { "rx_dropped" },
        { "rx_descriptor_error" },
        { "tx_timeouts" },
        { "alloc_rx_skb_error" },
        { "rx_iommu_map_error" },
        { "tx_iommu_map_error" },
        { "rx_desc_unk_state" },
};

static int
spider_net_ethtool_get_settings(struct net_device *netdev,
                               struct ethtool_cmd *cmd)
{
        struct spider_net_card *card;
        card = netdev_priv(netdev);

        cmd->supported   = (SUPPORTED_1000baseT_Full |
                             SUPPORTED_FIBRE);
        cmd->advertising = (ADVERTISED_1000baseT_Full |
                             ADVERTISED_FIBRE);
        cmd->port = PORT_FIBRE;
        cmd->speed = card->phy.speed;
        cmd->duplex = DUPLEX_FULL;

        return 0;
}

static void
spider_net_ethtool_get_drvinfo(struct net_device *netdev,
                               struct ethtool_drvinfo *drvinfo)
{
        struct spider_net_card *card;
        card = netdev_priv(netdev);

        /* clear and fill out info */
        memset(drvinfo, 0, sizeof(struct ethtool_drvinfo));
        strncpy(drvinfo->driver, spider_net_driver_name, 32);
        strncpy(drvinfo->version, VERSION, 32);
        strcpy(drvinfo->fw_version, "no information");
        strncpy(drvinfo->bus_info, pci_name(card->pdev), 32);
}

static void
spider_net_ethtool_get_wol(struct net_device *netdev,
                           struct ethtool_wolinfo *wolinfo)
{
        /* no support for wol */
        wolinfo->supported = 0;
        wolinfo->wolopts = 0;
}

static u32
spider_net_ethtool_get_msglevel(struct net_device *netdev)
{
        struct spider_net_card *card;
        card = netdev_priv(netdev);
        return card->msg_enable;
}

static void
spider_net_ethtool_set_msglevel(struct net_device *netdev,
                                u32 level)
{
        struct spider_net_card *card;
        card = netdev_priv(netdev);
        card->msg_enable = level;
}

static int
spider_net_ethtool_nway_reset(struct net_device *netdev)
{
        if (netif_running(netdev)) {
                spider_net_stop(netdev);
                spider_net_open(netdev);
        }
        return 0;
}

static u32
spider_net_ethtool_get_rx_csum(struct net_device *netdev)
{
        struct spider_net_card *card = netdev_priv(netdev);

        return card->options.rx_csum;
}

static int
spider_net_ethtool_set_rx_csum(struct net_device *netdev, u32 n)
{
        struct spider_net_card *card = netdev_priv(netdev);

        card->options.rx_csum = n;
        return 0;
}


static void
spider_net_ethtool_get_ringparam(struct net_device *netdev,
                                 struct ethtool_ringparam *ering)
{
        struct spider_net_card *card = netdev_priv(netdev);

        ering->tx_max_pending = SPIDER_NET_TX_DESCRIPTORS_MAX;
        ering->tx_pending = card->tx_chain.num_desc;
        ering->rx_max_pending = SPIDER_NET_RX_DESCRIPTORS_MAX;
        ering->rx_pending = card->rx_chain.num_desc;
}

static int spider_net_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 spider_net_get_ethtool_stats(struct net_device *netdev,
                struct ethtool_stats *stats, u64 *data)
{
        struct spider_net_card *card = netdev_priv(netdev);

        data[0] = netdev->stats.tx_packets;
        data[1] = netdev->stats.tx_bytes;
        data[2] = netdev->stats.rx_packets;
        data[3] = netdev->stats.rx_bytes;
        data[4] = netdev->stats.tx_errors;
        data[5] = netdev->stats.tx_dropped;
        data[6] = netdev->stats.rx_dropped;
        data[7] = card->spider_stats.rx_desc_error;
        data[8] = card->spider_stats.tx_timeouts;
        data[9] = card->spider_stats.alloc_rx_skb_error;
        data[10] = card->spider_stats.rx_iommu_map_error;
        data[11] = card->spider_stats.tx_iommu_map_error;
        data[12] = card->spider_stats.rx_desc_unk_state;
}

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

const struct ethtool_ops spider_net_ethtool_ops = {
        .get_settings           = spider_net_ethtool_get_settings,
        .get_drvinfo            = spider_net_ethtool_get_drvinfo,
        .get_wol                = spider_net_ethtool_get_wol,
        .get_msglevel           = spider_net_ethtool_get_msglevel,
        .set_msglevel           = spider_net_ethtool_set_msglevel,
        .get_link               = ethtool_op_get_link,
        .nway_reset             = spider_net_ethtool_nway_reset,
        .get_rx_csum            = spider_net_ethtool_get_rx_csum,
        .set_rx_csum            = spider_net_ethtool_set_rx_csum,
        .set_tx_csum            = ethtool_op_set_tx_csum,
        .get_ringparam          = spider_net_ethtool_get_ringparam,
        .get_strings            = spider_net_get_strings,
        .get_sset_count         = spider_net_get_sset_count,
        .get_ethtool_stats      = spider_net_get_ethtool_stats,
};