drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c - LeafOS-Devices/android_kernel_samsung_gta4xl - Gitiles

 /*
  * AMD 10Gb Ethernet driver
  *
  * This file is available to you under your choice of the following two
  * licenses:
  *
  * License 1: GPLv2
  *
  * Copyright (c) 2014 Advanced Micro Devices, Inc.
  *
  * This file is free software; you may copy, redistribute and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, either version 2 of the License, or (at
  * your option) any later version.
  *
  * This file 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, see <http://www.gnu.org/licenses/>.
  *
  * This file incorporates work covered by the following copyright and
  * permission notice:
  *     The Synopsys DWC ETHER XGMAC Software Driver and documentation
  *     (hereinafter "Software") is an unsupported proprietary work of Synopsys,
  *     Inc. unless otherwise expressly agreed to in writing between Synopsys
  *     and you.
  *
  *     The Software IS NOT an item of Licensed Software or Licensed Product
  *     under any End User Software License Agreement or Agreement for Licensed
  *     Product with Synopsys or any supplement thereto.  Permission is hereby
  *     granted, free of charge, to any person obtaining a copy of this software
  *     annotated with this license and the Software, to deal in the Software
  *     without restriction, including without limitation the rights to use,
  *     copy, modify, merge, publish, distribute, sublicense, and/or sell copies
  *     of the Software, and to permit persons to whom the Software is furnished
  *     to do so, subject to the following conditions:
  *
  *     The above copyright notice and this permission notice shall be included
  *     in all copies or substantial portions of the Software.
  *
  *     THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
  *     BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  *     TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  *     PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
  *     BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  *     CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  *     SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  *     INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  *     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  *     THE POSSIBILITY OF SUCH DAMAGE.
  *
  *
  * License 2: Modified BSD
  *
  * Copyright (c) 2014 Advanced Micro Devices, Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *     * Redistributions of source code must retain the above copyright
  *       notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above copyright
  *       notice, this list of conditions and the following disclaimer in the
  *       documentation and/or other materials provided with the distribution.
  *     * Neither the name of Advanced Micro Devices, Inc. nor the
  *       names of its contributors may be used to endorse or promote products
  *       derived from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * This file incorporates work covered by the following copyright and
  * permission notice:
  *     The Synopsys DWC ETHER XGMAC Software Driver and documentation
  *     (hereinafter "Software") is an unsupported proprietary work of Synopsys,
  *     Inc. unless otherwise expressly agreed to in writing between Synopsys
  *     and you.
  *
  *     The Software IS NOT an item of Licensed Software or Licensed Product
  *     under any End User Software License Agreement or Agreement for Licensed
  *     Product with Synopsys or any supplement thereto.  Permission is hereby
  *     granted, free of charge, to any person obtaining a copy of this software
  *     annotated with this license and the Software, to deal in the Software
  *     without restriction, including without limitation the rights to use,
  *     copy, modify, merge, publish, distribute, sublicense, and/or sell copies
  *     of the Software, and to permit persons to whom the Software is furnished
  *     to do so, subject to the following conditions:
  *
  *     The above copyright notice and this permission notice shall be included
  *     in all copies or substantial portions of the Software.
  *
  *     THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
  *     BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  *     TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  *     PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
  *     BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  *     CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  *     SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  *     INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  *     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  *     THE POSSIBILITY OF SUCH DAMAGE.
  */

 #include <linux/spinlock.h>
 #include <linux/phy.h>

 #include "xgbe.h"
 #include "xgbe-common.h"


 struct xgbe_stats {
 	char stat_string[ETH_GSTRING_LEN];
 	int stat_size;
 	int stat_offset;
 };

 #define XGMAC_MMC_STAT(_string, _var)				\
 	{ _string,						\
 	  FIELD_SIZEOF(struct xgbe_mmc_stats, _var),		\
 	  offsetof(struct xgbe_prv_data, mmc_stats._var),	\
 	}

 static const struct xgbe_stats xgbe_gstring_stats[] = {
 	XGMAC_MMC_STAT("tx_bytes", txoctetcount_gb),
 	XGMAC_MMC_STAT("tx_packets", txframecount_gb),
 	XGMAC_MMC_STAT("tx_unicast_packets", txunicastframes_gb),
 	XGMAC_MMC_STAT("tx_broadcast_packets", txbroadcastframes_gb),
 	XGMAC_MMC_STAT("tx_multicast_packets", txmulticastframes_gb),
 	XGMAC_MMC_STAT("tx_vlan_packets", txvlanframes_g),
 	XGMAC_MMC_STAT("tx_64_byte_packets", tx64octets_gb),
 	XGMAC_MMC_STAT("tx_65_to_127_byte_packets", tx65to127octets_gb),
 	XGMAC_MMC_STAT("tx_128_to_255_byte_packets", tx128to255octets_gb),
 	XGMAC_MMC_STAT("tx_256_to_511_byte_packets", tx256to511octets_gb),
 	XGMAC_MMC_STAT("tx_512_to_1023_byte_packets", tx512to1023octets_gb),
 	XGMAC_MMC_STAT("tx_1024_to_max_byte_packets", tx1024tomaxoctets_gb),
 	XGMAC_MMC_STAT("tx_underflow_errors", txunderflowerror),
 	XGMAC_MMC_STAT("tx_pause_frames", txpauseframes),

 	XGMAC_MMC_STAT("rx_bytes", rxoctetcount_gb),
 	XGMAC_MMC_STAT("rx_packets", rxframecount_gb),
 	XGMAC_MMC_STAT("rx_unicast_packets", rxunicastframes_g),
 	XGMAC_MMC_STAT("rx_broadcast_packets", rxbroadcastframes_g),
 	XGMAC_MMC_STAT("rx_multicast_packets", rxmulticastframes_g),
 	XGMAC_MMC_STAT("rx_vlan_packets", rxvlanframes_gb),
 	XGMAC_MMC_STAT("rx_64_byte_packets", rx64octets_gb),
 	XGMAC_MMC_STAT("rx_65_to_127_byte_packets", rx65to127octets_gb),
 	XGMAC_MMC_STAT("rx_128_to_255_byte_packets", rx128to255octets_gb),
 	XGMAC_MMC_STAT("rx_256_to_511_byte_packets", rx256to511octets_gb),
 	XGMAC_MMC_STAT("rx_512_to_1023_byte_packets", rx512to1023octets_gb),
 	XGMAC_MMC_STAT("rx_1024_to_max_byte_packets", rx1024tomaxoctets_gb),
 	XGMAC_MMC_STAT("rx_undersize_packets", rxundersize_g),
 	XGMAC_MMC_STAT("rx_oversize_packets", rxoversize_g),
 	XGMAC_MMC_STAT("rx_crc_errors", rxcrcerror),
 	XGMAC_MMC_STAT("rx_crc_errors_small_packets", rxrunterror),
 	XGMAC_MMC_STAT("rx_crc_errors_giant_packets", rxjabbererror),
 	XGMAC_MMC_STAT("rx_length_errors", rxlengtherror),
 	XGMAC_MMC_STAT("rx_out_of_range_errors", rxoutofrangetype),
 	XGMAC_MMC_STAT("rx_fifo_overflow_errors", rxfifooverflow),
 	XGMAC_MMC_STAT("rx_watchdog_errors", rxwatchdogerror),
 	XGMAC_MMC_STAT("rx_pause_frames", rxpauseframes),
 };
 #define XGBE_STATS_COUNT	ARRAY_SIZE(xgbe_gstring_stats)

 static void xgbe_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
 {
 	int i;

 	DBGPR("-->%s\n", __func__);

 	switch (stringset) {
 	case ETH_SS_STATS:
 		for (i = 0; i < XGBE_STATS_COUNT; i++) {
 			memcpy(data, xgbe_gstring_stats[i].stat_string,
 			       ETH_GSTRING_LEN);
 			data += ETH_GSTRING_LEN;
 		}
 		break;
 	}

 	DBGPR("<--%s\n", __func__);
 }

 static void xgbe_get_ethtool_stats(struct net_device *netdev,
 				   struct ethtool_stats *stats, u64 *data)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
 	u8 *stat;
 	int i;

 	DBGPR("-->%s\n", __func__);

 	pdata->hw_if.read_mmc_stats(pdata);
 	for (i = 0; i < XGBE_STATS_COUNT; i++) {
 		stat = (u8 *)pdata + xgbe_gstring_stats[i].stat_offset;
 		*data++ = *(u64 *)stat;
 	}

 	DBGPR("<--%s\n", __func__);
 }

 static int xgbe_get_sset_count(struct net_device *netdev, int stringset)
 {
 	int ret;

 	DBGPR("-->%s\n", __func__);

 	switch (stringset) {
 	case ETH_SS_STATS:
 		ret = XGBE_STATS_COUNT;
 		break;

 	default:
 		ret = -EOPNOTSUPP;
 	}

 	DBGPR("<--%s\n", __func__);

 	return ret;
 }

 static void xgbe_get_pauseparam(struct net_device *netdev,
 				struct ethtool_pauseparam *pause)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);

 	DBGPR("-->xgbe_get_pauseparam\n");

 	pause->autoneg = pdata->pause_autoneg;
 	pause->tx_pause = pdata->tx_pause;
 	pause->rx_pause = pdata->rx_pause;

 	DBGPR("<--xgbe_get_pauseparam\n");
 }

 static int xgbe_set_pauseparam(struct net_device *netdev,
 			       struct ethtool_pauseparam *pause)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
 	struct phy_device *phydev = pdata->phydev;
 	int ret = 0;

 	DBGPR("-->xgbe_set_pauseparam\n");

 	DBGPR("  autoneg = %d, tx_pause = %d, rx_pause = %d\n",
 	      pause->autoneg, pause->tx_pause, pause->rx_pause);

 	pdata->pause_autoneg = pause->autoneg;
 	if (pause->autoneg) {
 		phydev->advertising |= ADVERTISED_Pause;
 		phydev->advertising |= ADVERTISED_Asym_Pause;

 	} else {
 		phydev->advertising &= ~ADVERTISED_Pause;
 		phydev->advertising &= ~ADVERTISED_Asym_Pause;

 		pdata->tx_pause = pause->tx_pause;
 		pdata->rx_pause = pause->rx_pause;
 	}

 	if (netif_running(netdev))
 		ret = phy_start_aneg(phydev);

 	DBGPR("<--xgbe_set_pauseparam\n");

 	return ret;
 }

 static int xgbe_get_settings(struct net_device *netdev,
 			     struct ethtool_cmd *cmd)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
 	int ret;

 	DBGPR("-->xgbe_get_settings\n");

 	if (!pdata->phydev)
 		return -ENODEV;

 	spin_lock_irq(&pdata->lock);

 	ret = phy_ethtool_gset(pdata->phydev, cmd);
 	cmd->transceiver = XCVR_EXTERNAL;

 	spin_unlock_irq(&pdata->lock);

 	DBGPR("<--xgbe_get_settings\n");

 	return ret;
 }

 static int xgbe_set_settings(struct net_device *netdev,
 			     struct ethtool_cmd *cmd)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
 	struct phy_device *phydev = pdata->phydev;
 	u32 speed;
 	int ret;

 	DBGPR("-->xgbe_set_settings\n");

 	if (!pdata->phydev)
 		return -ENODEV;

 	spin_lock_irq(&pdata->lock);

 	speed = ethtool_cmd_speed(cmd);

 	ret = -EINVAL;
 	if (cmd->phy_address != phydev->addr)
 		goto unlock;

 	if ((cmd->autoneg != AUTONEG_ENABLE) &&
 	    (cmd->autoneg != AUTONEG_DISABLE))
 		goto unlock;

 	if ((cmd->autoneg == AUTONEG_DISABLE) &&
 	    (((speed != SPEED_10000) && (speed != SPEED_1000)) ||
 	     (cmd->duplex != DUPLEX_FULL)))
 		goto unlock;

 	if (cmd->autoneg == AUTONEG_ENABLE) {
 		/* Clear settings needed to force speeds */
 		phydev->supported &= ~SUPPORTED_1000baseT_Full;
 		phydev->supported &= ~SUPPORTED_10000baseT_Full;
 	} else {
 		/* Add settings needed to force speed */
 		phydev->supported |= SUPPORTED_1000baseT_Full;
 		phydev->supported |= SUPPORTED_10000baseT_Full;
 	}

 	cmd->advertising &= phydev->supported;
 	if ((cmd->autoneg == AUTONEG_ENABLE) && !cmd->advertising)
 		goto unlock;

 	ret = 0;
 	phydev->autoneg = cmd->autoneg;
 	phydev->speed = speed;
 	phydev->duplex = cmd->duplex;
 	phydev->advertising = cmd->advertising;

 	if (cmd->autoneg == AUTONEG_ENABLE)
 		phydev->advertising |= ADVERTISED_Autoneg;
 	else
 		phydev->advertising &= ~ADVERTISED_Autoneg;

 	if (netif_running(netdev))
 		ret = phy_start_aneg(phydev);

 unlock:
 	spin_unlock_irq(&pdata->lock);

 	DBGPR("<--xgbe_set_settings\n");

 	return ret;
 }

 static void xgbe_get_drvinfo(struct net_device *netdev,
 			     struct ethtool_drvinfo *drvinfo)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);

 	strlcpy(drvinfo->driver, XGBE_DRV_NAME, sizeof(drvinfo->driver));
 	strlcpy(drvinfo->version, XGBE_DRV_VERSION, sizeof(drvinfo->version));
 	strlcpy(drvinfo->bus_info, dev_name(pdata->dev),
 		sizeof(drvinfo->bus_info));
 	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), "%d.%d.%d",
 		 XGMAC_IOREAD_BITS(pdata, MAC_VR, USERVER),
 		 XGMAC_IOREAD_BITS(pdata, MAC_VR, DEVID),
 		 XGMAC_IOREAD_BITS(pdata, MAC_VR, SNPSVER));
 	drvinfo->n_stats = XGBE_STATS_COUNT;
 }

 static int xgbe_get_coalesce(struct net_device *netdev,
 			     struct ethtool_coalesce *ec)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
 	struct xgbe_hw_if *hw_if = &pdata->hw_if;
 	unsigned int riwt;

 	DBGPR("-->xgbe_get_coalesce\n");

 	memset(ec, 0, sizeof(struct ethtool_coalesce));

 	riwt = pdata->rx_riwt;
 	ec->rx_coalesce_usecs = hw_if->riwt_to_usec(pdata, riwt);
 	ec->rx_max_coalesced_frames = pdata->rx_frames;

 	ec->tx_coalesce_usecs = pdata->tx_usecs;
 	ec->tx_max_coalesced_frames = pdata->tx_frames;

 	DBGPR("<--xgbe_get_coalesce\n");

 	return 0;
 }

 static int xgbe_set_coalesce(struct net_device *netdev,
 			     struct ethtool_coalesce *ec)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
 	struct xgbe_hw_if *hw_if = &pdata->hw_if;
 	unsigned int rx_frames, rx_riwt, rx_usecs;
 	unsigned int tx_frames, tx_usecs;

 	DBGPR("-->xgbe_set_coalesce\n");

 	/* Check for not supported parameters  */
 	if ((ec->rx_coalesce_usecs_irq) ||
 	    (ec->rx_max_coalesced_frames_irq) ||
 	    (ec->tx_coalesce_usecs_irq) ||
 	    (ec->tx_max_coalesced_frames_irq) ||
 	    (ec->stats_block_coalesce_usecs) ||
 	    (ec->use_adaptive_rx_coalesce) ||
 	    (ec->use_adaptive_tx_coalesce) ||
 	    (ec->pkt_rate_low) ||
 	    (ec->rx_coalesce_usecs_low) ||
 	    (ec->rx_max_coalesced_frames_low) ||
 	    (ec->tx_coalesce_usecs_low) ||
 	    (ec->tx_max_coalesced_frames_low) ||
 	    (ec->pkt_rate_high) ||
 	    (ec->rx_coalesce_usecs_high) ||
 	    (ec->rx_max_coalesced_frames_high) ||
 	    (ec->tx_coalesce_usecs_high) ||
 	    (ec->tx_max_coalesced_frames_high) ||
 	    (ec->rate_sample_interval))
 		return -EOPNOTSUPP;

 	/* Can only change rx-frames when interface is down (see
 	 * rx_descriptor_init in xgbe-dev.c)
 	 */
 	rx_frames = pdata->rx_frames;
 	if (rx_frames != ec->rx_max_coalesced_frames && netif_running(netdev)) {
 		netdev_alert(netdev,
 			     "interface must be down to change rx-frames\n");
 		return -EINVAL;
 	}

 	rx_riwt = hw_if->usec_to_riwt(pdata, ec->rx_coalesce_usecs);
 	rx_frames = ec->rx_max_coalesced_frames;

 	/* Use smallest possible value if conversion resulted in zero */
 	if (ec->rx_coalesce_usecs && !rx_riwt)
 		rx_riwt = 1;

 	/* Check the bounds of values for Rx */
 	if (rx_riwt > XGMAC_MAX_DMA_RIWT) {
 		rx_usecs = hw_if->riwt_to_usec(pdata, XGMAC_MAX_DMA_RIWT);
 		netdev_alert(netdev, "rx-usec is limited to %d usecs\n",
 			     rx_usecs);
 		return -EINVAL;
 	}
 	if (rx_frames > pdata->channel->rx_ring->rdesc_count) {
 		netdev_alert(netdev, "rx-frames is limited to %d frames\n",
 			     pdata->channel->rx_ring->rdesc_count);
 		return -EINVAL;
 	}

 	tx_usecs = ec->tx_coalesce_usecs;
 	tx_frames = ec->tx_max_coalesced_frames;

 	/* Check the bounds of values for Tx */
 	if (tx_frames > pdata->channel->tx_ring->rdesc_count) {
 		netdev_alert(netdev, "tx-frames is limited to %d frames\n",
 			     pdata->channel->tx_ring->rdesc_count);
 		return -EINVAL;
 	}

 	pdata->rx_riwt = rx_riwt;
 	pdata->rx_frames = rx_frames;
 	hw_if->config_rx_coalesce(pdata);

 	pdata->tx_usecs = tx_usecs;
 	pdata->tx_frames = tx_frames;
 	hw_if->config_tx_coalesce(pdata);

 	DBGPR("<--xgbe_set_coalesce\n");

 	return 0;
 }

 static const struct ethtool_ops xgbe_ethtool_ops = {
 	.get_settings = xgbe_get_settings,
 	.set_settings = xgbe_set_settings,
 	.get_drvinfo = xgbe_get_drvinfo,
 	.get_link = ethtool_op_get_link,
 	.get_coalesce = xgbe_get_coalesce,
 	.set_coalesce = xgbe_set_coalesce,
 	.get_pauseparam = xgbe_get_pauseparam,
 	.set_pauseparam = xgbe_set_pauseparam,
 	.get_strings = xgbe_get_strings,
 	.get_ethtool_stats = xgbe_get_ethtool_stats,
 	.get_sset_count = xgbe_get_sset_count,
 };

 struct ethtool_ops *xgbe_get_ethtool_ops(void)
 {
 	return (struct ethtool_ops *)&xgbe_ethtool_ops;
 }
	/*
	* AMD 10Gb Ethernet driver
	*
	* This file is available to you under your choice of the following two
	* licenses:
	*
	* License 1: GPLv2
	*
	* Copyright (c) 2014 Advanced Micro Devices, Inc.
	*
	* This file is free software; you may copy, redistribute and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation, either version 2 of the License, or (at
	* your option) any later version.
	*
	* This file 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, see <http://www.gnu.org/licenses/>.
	*
	* This file incorporates work covered by the following copyright and
	* permission notice:
	* The Synopsys DWC ETHER XGMAC Software Driver and documentation
	* (hereinafter "Software") is an unsupported proprietary work of Synopsys,
	* Inc. unless otherwise expressly agreed to in writing between Synopsys
	* and you.
	*
	* The Software IS NOT an item of Licensed Software or Licensed Product
	* under any End User Software License Agreement or Agreement for Licensed
	* Product with Synopsys or any supplement thereto. Permission is hereby
	* granted, free of charge, to any person obtaining a copy of this software
	* annotated with this license and the Software, to deal in the Software
	* without restriction, including without limitation the rights to use,
	* copy, modify, merge, publish, distribute, sublicense, and/or sell copies
	* of the Software, and to permit persons to whom the Software is furnished
	* to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included
	* in all copies or substantial portions of the Software.
	*
	* THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
	* BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
	* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
	* PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
	* THE POSSIBILITY OF SUCH DAMAGE.
	*
	*
	* License 2: Modified BSD
	*
	* Copyright (c) 2014 Advanced Micro Devices, Inc.
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are met:
	* * Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* * Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* * Neither the name of Advanced Micro Devices, Inc. nor the
	* names of its contributors may be used to endorse or promote products
	* derived from this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
	* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*
	* This file incorporates work covered by the following copyright and
	* permission notice:
	* The Synopsys DWC ETHER XGMAC Software Driver and documentation
	* (hereinafter "Software") is an unsupported proprietary work of Synopsys,
	* Inc. unless otherwise expressly agreed to in writing between Synopsys
	* and you.
	*
	* The Software IS NOT an item of Licensed Software or Licensed Product
	* under any End User Software License Agreement or Agreement for Licensed
	* Product with Synopsys or any supplement thereto. Permission is hereby
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	* annotated with this license and the Software, to deal in the Software
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	* of the Software, and to permit persons to whom the Software is furnished
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	* THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
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	* PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
	* THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#include <linux/spinlock.h>
	#include <linux/phy.h>

	#include "xgbe.h"
	#include "xgbe-common.h"


	struct xgbe_stats {
	char stat_string[ETH_GSTRING_LEN];
	int stat_size;
	int stat_offset;
	};

	#define XGMAC_MMC_STAT(_string, _var) \
	{ _string, \
	FIELD_SIZEOF(struct xgbe_mmc_stats, _var), \
	offsetof(struct xgbe_prv_data, mmc_stats._var), \
	}

	static const struct xgbe_stats xgbe_gstring_stats[] = {
	XGMAC_MMC_STAT("tx_bytes", txoctetcount_gb),
	XGMAC_MMC_STAT("tx_packets", txframecount_gb),
	XGMAC_MMC_STAT("tx_unicast_packets", txunicastframes_gb),
	XGMAC_MMC_STAT("tx_broadcast_packets", txbroadcastframes_gb),
	XGMAC_MMC_STAT("tx_multicast_packets", txmulticastframes_gb),
	XGMAC_MMC_STAT("tx_vlan_packets", txvlanframes_g),
	XGMAC_MMC_STAT("tx_64_byte_packets", tx64octets_gb),
	XGMAC_MMC_STAT("tx_65_to_127_byte_packets", tx65to127octets_gb),
	XGMAC_MMC_STAT("tx_128_to_255_byte_packets", tx128to255octets_gb),
	XGMAC_MMC_STAT("tx_256_to_511_byte_packets", tx256to511octets_gb),
	XGMAC_MMC_STAT("tx_512_to_1023_byte_packets", tx512to1023octets_gb),
	XGMAC_MMC_STAT("tx_1024_to_max_byte_packets", tx1024tomaxoctets_gb),
	XGMAC_MMC_STAT("tx_underflow_errors", txunderflowerror),
	XGMAC_MMC_STAT("tx_pause_frames", txpauseframes),

	XGMAC_MMC_STAT("rx_bytes", rxoctetcount_gb),
	XGMAC_MMC_STAT("rx_packets", rxframecount_gb),
	XGMAC_MMC_STAT("rx_unicast_packets", rxunicastframes_g),
	XGMAC_MMC_STAT("rx_broadcast_packets", rxbroadcastframes_g),
	XGMAC_MMC_STAT("rx_multicast_packets", rxmulticastframes_g),
	XGMAC_MMC_STAT("rx_vlan_packets", rxvlanframes_gb),
	XGMAC_MMC_STAT("rx_64_byte_packets", rx64octets_gb),
	XGMAC_MMC_STAT("rx_65_to_127_byte_packets", rx65to127octets_gb),
	XGMAC_MMC_STAT("rx_128_to_255_byte_packets", rx128to255octets_gb),
	XGMAC_MMC_STAT("rx_256_to_511_byte_packets", rx256to511octets_gb),
	XGMAC_MMC_STAT("rx_512_to_1023_byte_packets", rx512to1023octets_gb),
	XGMAC_MMC_STAT("rx_1024_to_max_byte_packets", rx1024tomaxoctets_gb),
	XGMAC_MMC_STAT("rx_undersize_packets", rxundersize_g),
	XGMAC_MMC_STAT("rx_oversize_packets", rxoversize_g),
	XGMAC_MMC_STAT("rx_crc_errors", rxcrcerror),
	XGMAC_MMC_STAT("rx_crc_errors_small_packets", rxrunterror),
	XGMAC_MMC_STAT("rx_crc_errors_giant_packets", rxjabbererror),
	XGMAC_MMC_STAT("rx_length_errors", rxlengtherror),
	XGMAC_MMC_STAT("rx_out_of_range_errors", rxoutofrangetype),
	XGMAC_MMC_STAT("rx_fifo_overflow_errors", rxfifooverflow),
	XGMAC_MMC_STAT("rx_watchdog_errors", rxwatchdogerror),
	XGMAC_MMC_STAT("rx_pause_frames", rxpauseframes),
	};
	#define XGBE_STATS_COUNT ARRAY_SIZE(xgbe_gstring_stats)

	static void xgbe_get_strings(struct net_device netdev, u32 stringset, u8 data)
	{
	int i;

	DBGPR("-->%s\n", __func__);

	switch (stringset) {
	case ETH_SS_STATS:
	for (i = 0; i < XGBE_STATS_COUNT; i++) {
	memcpy(data, xgbe_gstring_stats[i].stat_string,
	ETH_GSTRING_LEN);
	data += ETH_GSTRING_LEN;
	}
	break;
	}

	DBGPR("<--%s\n", __func__);
	}

	static void xgbe_get_ethtool_stats(struct net_device *netdev,
	struct ethtool_stats stats, u64 data)
	{
	struct xgbe_prv_data *pdata = netdev_priv(netdev);
	u8 *stat;
	int i;

	DBGPR("-->%s\n", __func__);

	pdata->hw_if.read_mmc_stats(pdata);
	for (i = 0; i < XGBE_STATS_COUNT; i++) {
	stat = (u8 *)pdata + xgbe_gstring_stats[i].stat_offset;
	data++ = (u64 *)stat;
	}

	DBGPR("<--%s\n", __func__);
	}

	static int xgbe_get_sset_count(struct net_device *netdev, int stringset)
	{
	int ret;

	DBGPR("-->%s\n", __func__);

	switch (stringset) {
	case ETH_SS_STATS:
	ret = XGBE_STATS_COUNT;
	break;

	default:
	ret = -EOPNOTSUPP;
	}

	DBGPR("<--%s\n", __func__);

	return ret;
	}

	static void xgbe_get_pauseparam(struct net_device *netdev,
	struct ethtool_pauseparam *pause)
	{
	struct xgbe_prv_data *pdata = netdev_priv(netdev);

	DBGPR("-->xgbe_get_pauseparam\n");

	pause->autoneg = pdata->pause_autoneg;
	pause->tx_pause = pdata->tx_pause;
	pause->rx_pause = pdata->rx_pause;

	DBGPR("<--xgbe_get_pauseparam\n");
	}

	static int xgbe_set_pauseparam(struct net_device *netdev,
	struct ethtool_pauseparam *pause)
	{
	struct xgbe_prv_data *pdata = netdev_priv(netdev);
	struct phy_device *phydev = pdata->phydev;
	int ret = 0;

	DBGPR("-->xgbe_set_pauseparam\n");

	DBGPR(" autoneg = %d, tx_pause = %d, rx_pause = %d\n",
	pause->autoneg, pause->tx_pause, pause->rx_pause);

	pdata->pause_autoneg = pause->autoneg;
	if (pause->autoneg) {
	phydev->advertising \|= ADVERTISED_Pause;
	phydev->advertising \|= ADVERTISED_Asym_Pause;

	} else {
	phydev->advertising &= ~ADVERTISED_Pause;
	phydev->advertising &= ~ADVERTISED_Asym_Pause;

	pdata->tx_pause = pause->tx_pause;
	pdata->rx_pause = pause->rx_pause;
	}

	if (netif_running(netdev))
	ret = phy_start_aneg(phydev);

	DBGPR("<--xgbe_set_pauseparam\n");

	return ret;
	}

	static int xgbe_get_settings(struct net_device *netdev,
	struct ethtool_cmd *cmd)
	{
	struct xgbe_prv_data *pdata = netdev_priv(netdev);
	int ret;

	DBGPR("-->xgbe_get_settings\n");

	if (!pdata->phydev)
	return -ENODEV;

	spin_lock_irq(&pdata->lock);

	ret = phy_ethtool_gset(pdata->phydev, cmd);
	cmd->transceiver = XCVR_EXTERNAL;

	spin_unlock_irq(&pdata->lock);

	DBGPR("<--xgbe_get_settings\n");

	return ret;
	}

	static int xgbe_set_settings(struct net_device *netdev,
	struct ethtool_cmd *cmd)
	{
	struct xgbe_prv_data *pdata = netdev_priv(netdev);
	struct phy_device *phydev = pdata->phydev;
	u32 speed;
	int ret;

	DBGPR("-->xgbe_set_settings\n");

	if (!pdata->phydev)
	return -ENODEV;

	spin_lock_irq(&pdata->lock);

	speed = ethtool_cmd_speed(cmd);

	ret = -EINVAL;
	if (cmd->phy_address != phydev->addr)
	goto unlock;

	if ((cmd->autoneg != AUTONEG_ENABLE) &&
	(cmd->autoneg != AUTONEG_DISABLE))
	goto unlock;

	if ((cmd->autoneg == AUTONEG_DISABLE) &&
	(((speed != SPEED_10000) && (speed != SPEED_1000)) \|\|
	(cmd->duplex != DUPLEX_FULL)))
	goto unlock;

	if (cmd->autoneg == AUTONEG_ENABLE) {
	/* Clear settings needed to force speeds */
	phydev->supported &= ~SUPPORTED_1000baseT_Full;
	phydev->supported &= ~SUPPORTED_10000baseT_Full;
	} else {
	/* Add settings needed to force speed */
	phydev->supported \|= SUPPORTED_1000baseT_Full;
	phydev->supported \|= SUPPORTED_10000baseT_Full;
	}

	cmd->advertising &= phydev->supported;
	if ((cmd->autoneg == AUTONEG_ENABLE) && !cmd->advertising)
	goto unlock;

	ret = 0;
	phydev->autoneg = cmd->autoneg;
	phydev->speed = speed;
	phydev->duplex = cmd->duplex;
	phydev->advertising = cmd->advertising;

	if (cmd->autoneg == AUTONEG_ENABLE)
	phydev->advertising \|= ADVERTISED_Autoneg;
	else
	phydev->advertising &= ~ADVERTISED_Autoneg;

	if (netif_running(netdev))
	ret = phy_start_aneg(phydev);

	unlock:
	spin_unlock_irq(&pdata->lock);

	DBGPR("<--xgbe_set_settings\n");

	return ret;
	}

	static void xgbe_get_drvinfo(struct net_device *netdev,
	struct ethtool_drvinfo *drvinfo)
	{
	struct xgbe_prv_data *pdata = netdev_priv(netdev);

	strlcpy(drvinfo->driver, XGBE_DRV_NAME, sizeof(drvinfo->driver));
	strlcpy(drvinfo->version, XGBE_DRV_VERSION, sizeof(drvinfo->version));
	strlcpy(drvinfo->bus_info, dev_name(pdata->dev),
	sizeof(drvinfo->bus_info));
	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), "%d.%d.%d",
	XGMAC_IOREAD_BITS(pdata, MAC_VR, USERVER),
	XGMAC_IOREAD_BITS(pdata, MAC_VR, DEVID),
	XGMAC_IOREAD_BITS(pdata, MAC_VR, SNPSVER));
	drvinfo->n_stats = XGBE_STATS_COUNT;
	}

	static int xgbe_get_coalesce(struct net_device *netdev,
	struct ethtool_coalesce *ec)
	{
	struct xgbe_prv_data *pdata = netdev_priv(netdev);
	struct xgbe_hw_if *hw_if = &pdata->hw_if;
	unsigned int riwt;

	DBGPR("-->xgbe_get_coalesce\n");

	memset(ec, 0, sizeof(struct ethtool_coalesce));

	riwt = pdata->rx_riwt;
	ec->rx_coalesce_usecs = hw_if->riwt_to_usec(pdata, riwt);
	ec->rx_max_coalesced_frames = pdata->rx_frames;

	ec->tx_coalesce_usecs = pdata->tx_usecs;
	ec->tx_max_coalesced_frames = pdata->tx_frames;

	DBGPR("<--xgbe_get_coalesce\n");

	return 0;
	}

	static int xgbe_set_coalesce(struct net_device *netdev,
	struct ethtool_coalesce *ec)
	{
	struct xgbe_prv_data *pdata = netdev_priv(netdev);
	struct xgbe_hw_if *hw_if = &pdata->hw_if;
	unsigned int rx_frames, rx_riwt, rx_usecs;
	unsigned int tx_frames, tx_usecs;

	DBGPR("-->xgbe_set_coalesce\n");

	/* Check for not supported parameters */
	if ((ec->rx_coalesce_usecs_irq) \|\|
	(ec->rx_max_coalesced_frames_irq) \|\|
	(ec->tx_coalesce_usecs_irq) \|\|
	(ec->tx_max_coalesced_frames_irq) \|\|
	(ec->stats_block_coalesce_usecs) \|\|
	(ec->use_adaptive_rx_coalesce) \|\|
	(ec->use_adaptive_tx_coalesce) \|\|
	(ec->pkt_rate_low) \|\|
	(ec->rx_coalesce_usecs_low) \|\|
	(ec->rx_max_coalesced_frames_low) \|\|
	(ec->tx_coalesce_usecs_low) \|\|
	(ec->tx_max_coalesced_frames_low) \|\|
	(ec->pkt_rate_high) \|\|
	(ec->rx_coalesce_usecs_high) \|\|
	(ec->rx_max_coalesced_frames_high) \|\|
	(ec->tx_coalesce_usecs_high) \|\|
	(ec->tx_max_coalesced_frames_high) \|\|
	(ec->rate_sample_interval))
	return -EOPNOTSUPP;

	/* Can only change rx-frames when interface is down (see
	* rx_descriptor_init in xgbe-dev.c)
	*/
	rx_frames = pdata->rx_frames;
	if (rx_frames != ec->rx_max_coalesced_frames && netif_running(netdev)) {
	netdev_alert(netdev,
	"interface must be down to change rx-frames\n");
	return -EINVAL;
	}

	rx_riwt = hw_if->usec_to_riwt(pdata, ec->rx_coalesce_usecs);
	rx_frames = ec->rx_max_coalesced_frames;

	/* Use smallest possible value if conversion resulted in zero */
	if (ec->rx_coalesce_usecs && !rx_riwt)
	rx_riwt = 1;

	/* Check the bounds of values for Rx */
	if (rx_riwt > XGMAC_MAX_DMA_RIWT) {
	rx_usecs = hw_if->riwt_to_usec(pdata, XGMAC_MAX_DMA_RIWT);
	netdev_alert(netdev, "rx-usec is limited to %d usecs\n",
	rx_usecs);
	return -EINVAL;
	}
	if (rx_frames > pdata->channel->rx_ring->rdesc_count) {
	netdev_alert(netdev, "rx-frames is limited to %d frames\n",
	pdata->channel->rx_ring->rdesc_count);
	return -EINVAL;
	}

	tx_usecs = ec->tx_coalesce_usecs;
	tx_frames = ec->tx_max_coalesced_frames;

	/* Check the bounds of values for Tx */
	if (tx_frames > pdata->channel->tx_ring->rdesc_count) {
	netdev_alert(netdev, "tx-frames is limited to %d frames\n",
	pdata->channel->tx_ring->rdesc_count);
	return -EINVAL;
	}

	pdata->rx_riwt = rx_riwt;
	pdata->rx_frames = rx_frames;
	hw_if->config_rx_coalesce(pdata);

	pdata->tx_usecs = tx_usecs;
	pdata->tx_frames = tx_frames;
	hw_if->config_tx_coalesce(pdata);

	DBGPR("<--xgbe_set_coalesce\n");

	return 0;
	}

	static const struct ethtool_ops xgbe_ethtool_ops = {
	.get_settings = xgbe_get_settings,
	.set_settings = xgbe_set_settings,
	.get_drvinfo = xgbe_get_drvinfo,
	.get_link = ethtool_op_get_link,
	.get_coalesce = xgbe_get_coalesce,
	.set_coalesce = xgbe_set_coalesce,
	.get_pauseparam = xgbe_get_pauseparam,
	.set_pauseparam = xgbe_set_pauseparam,
	.get_strings = xgbe_get_strings,
	.get_ethtool_stats = xgbe_get_ethtool_stats,
	.get_sset_count = xgbe_get_sset_count,
	};

	struct ethtool_ops *xgbe_get_ethtool_ops(void)
	{
	return (struct ethtool_ops *)&xgbe_ethtool_ops;
	}