/*
<:copyright-BRCM:2017:DUAL/GPL:standard

   Copyright (c) 2017 Broadcom 
   All Rights Reserved

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2, as published by
the Free Software Foundation (the "GPL").

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.


A copy of the GPL is available at http://www.broadcom.com/licenses/GPLv2.php, or by
writing to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.

:>
*/

#include <linux/netdevice.h>
#include "bcmenet_common.h"
#include "bcmenet_dma.h"
#include <linux/ethtool.h>
#include "bcmnet.h"
#include "bcmenet_ethtool.h"

static int enet_ethtool_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
{

  BcmEnet_devctrl *pDevCtrl = netdev_priv(dev);

  switch(pDevCtrl->MibInfo.ulIfSpeed) {
    case SPEED_2500MBIT:
      ecmd->speed = SPEED_2500;
      break;
    case SPEED_1000MBIT:
       ecmd->speed = SPEED_1000;
       break;
    case SPEED_100MBIT:
       ecmd->speed = SPEED_100;
       break;
    case SPEED_10MBIT:
       ecmd->speed = SPEED_10;
       break;
    case 0:
       // it is possible the enet is not fully up yet.
       return -1;
    default:
       // unsupported speed
       WARN_ONCE(1, "Unknown ethernet speed (%lld)\n",pDevCtrl->MibInfo.ulIfSpeed);
       return -1;
        
  }
    
  if (pDevCtrl->MibInfo.ulIfDuplex) {
    ecmd->duplex = DUPLEX_FULL;
  }else {
    ecmd->duplex = DUPLEX_HALF;
  }

  return 0;
    return -1;
}

static void enet_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data)
{
    const struct rtnl_link_stats64 *ethStats;
    struct rtnl_link_stats64 temp;

    BcmEnet_devctrl *pDevCtrl = netdev_priv(dev);
    ethStats = dev_get_stats(dev, &temp);
    
    data[ET_TX_BYTES] =     ethStats->tx_bytes;
    /* Note: capacity is in bytes per second */
    switch(pDevCtrl->MibInfo.ulIfSpeed) {
        case SPEED_1000MBIT: data[ET_TX_CAPACITY] = 1000000000L/8;    break;
        case SPEED_100MBIT:  data[ET_TX_CAPACITY] = 100000000L/8;     break;
        case SPEED_10MBIT:   data[ET_TX_CAPACITY] = 10000000L/8;      break;
        case 0:              data[ET_TX_CAPACITY] = 0;       break;
        default:             
            data[ET_TX_CAPACITY] = pDevCtrl->MibInfo.ulIfSpeed/8; 
            WARN_ONCE(1, "[%s.%d]: Unrecognized speed for %p (%5s): %lld\n", __func__, __LINE__, dev, dev->name, pDevCtrl->MibInfo.ulIfSpeed);
            break;
    }
    data[ET_TX_PACKETS] =   ethStats->tx_packets;
    data[ET_TX_ERRORS] =    ethStats->tx_errors;
    data[ET_RX_BYTES] =     ethStats->rx_bytes;
    data[ET_RX_PACKETS] =   ethStats->rx_packets;
    data[ET_RX_ERRORS] =    ethStats->rx_errors;
}

const struct ethtool_ops enet_ethtool_ops = {
    .get_settings =         enet_ethtool_get_settings,
    .get_ethtool_stats =    enet_get_ethtool_stats,
};