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Commit b0cdb168 authored by Madalin Bucur's avatar Madalin Bucur Committed by David S. Miller
Browse files

dpaa_eth: add ethtool functionality 



Add support for basic ethtool operations.

Signed-off-by: default avatarMadalin Bucur <madalin.bucur@nxp.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9ad1a374

drivers/net/ethernet/freescale/dpaa/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -8,4 +8,4 @@ ccflags-y += -I$(FMAN) 


obj-$(CONFIG_FSL_DPAA_ETH) += fsl_dpa.o



fsl_dpa-objs += dpaa_eth.o
 
fsl_dpa-objs += dpaa_eth.o dpaa_ethtool.o

drivers/net/ethernet/freescale/dpaa/dpaa_eth.c

+2 −0
Original line number Diff line number Diff line
@@ -240,6 +240,8 @@ static int dpaa_netdev_init(struct net_device *net_dev, 
	memcpy(net_dev->perm_addr, mac_addr, net_dev->addr_len);

	memcpy(net_dev->dev_addr, mac_addr, net_dev->addr_len);



	net_dev->ethtool_ops = &dpaa_ethtool_ops;



	net_dev->needed_headroom = priv->tx_headroom;

	net_dev->watchdog_timeo = msecs_to_jiffies(tx_timeout);

drivers/net/ethernet/freescale/dpaa/dpaa_eth.h

+3 −0
Original line number Diff line number Diff line
@@ -141,4 +141,7 @@ struct dpaa_priv { 
	struct dpaa_buffer_layout buf_layout[2];

	u16 rx_headroom;

};



/* from dpaa_ethtool.c */

extern const struct ethtool_ops dpaa_ethtool_ops;

#endif	/* __DPAA_H */

drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c

0 → 100644
+218 −0
Original line number Diff line number Diff line 
/* Copyright 2008-2016 Freescale Semiconductor, Inc.

 *

 * 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 Freescale Semiconductor nor the

 *	 names of its contributors may be used to endorse or promote products

 *	 derived from this software without specific prior written permission.

 *

 *

 * ALTERNATIVELY, this software may be distributed under the terms of the

 * GNU General Public License ("GPL") as published by the Free Software

 * Foundation, either version 2 of that License or (at your option) any

 * later version.

 *

 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``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 Freescale Semiconductor 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.

 */



#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt



#include <linux/string.h>



#include "dpaa_eth.h"

#include "mac.h"



static int dpaa_get_settings(struct net_device *net_dev,

			     struct ethtool_cmd *et_cmd)

{

	int err;



	if (!net_dev->phydev) {

		netdev_dbg(net_dev, "phy device not initialized\n");

		return 0;

	}



	err = phy_ethtool_gset(net_dev->phydev, et_cmd);



	return err;

}



static int dpaa_set_settings(struct net_device *net_dev,

			     struct ethtool_cmd *et_cmd)

{

	int err;



	if (!net_dev->phydev) {

		netdev_err(net_dev, "phy device not initialized\n");

		return -ENODEV;

	}



	err = phy_ethtool_sset(net_dev->phydev, et_cmd);

	if (err < 0)

		netdev_err(net_dev, "phy_ethtool_sset() = %d\n", err);



	return err;

}



static void dpaa_get_drvinfo(struct net_device *net_dev,

			     struct ethtool_drvinfo *drvinfo)

{

	int len;



	strlcpy(drvinfo->driver, KBUILD_MODNAME,

		sizeof(drvinfo->driver));

	len = snprintf(drvinfo->version, sizeof(drvinfo->version),

		       "%X", 0);

	len = snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),

		       "%X", 0);



	if (len >= sizeof(drvinfo->fw_version)) {

		/* Truncated output */

		netdev_notice(net_dev, "snprintf() = %d\n", len);

	}

	strlcpy(drvinfo->bus_info, dev_name(net_dev->dev.parent->parent),

		sizeof(drvinfo->bus_info));

}



static u32 dpaa_get_msglevel(struct net_device *net_dev)

{

	return ((struct dpaa_priv *)netdev_priv(net_dev))->msg_enable;

}



static void dpaa_set_msglevel(struct net_device *net_dev,

			      u32 msg_enable)

{

	((struct dpaa_priv *)netdev_priv(net_dev))->msg_enable = msg_enable;

}



static int dpaa_nway_reset(struct net_device *net_dev)

{

	int err;



	if (!net_dev->phydev) {

		netdev_err(net_dev, "phy device not initialized\n");

		return -ENODEV;

	}



	err = 0;

	if (net_dev->phydev->autoneg) {

		err = phy_start_aneg(net_dev->phydev);

		if (err < 0)

			netdev_err(net_dev, "phy_start_aneg() = %d\n",

				   err);

	}



	return err;

}



static void dpaa_get_pauseparam(struct net_device *net_dev,

				struct ethtool_pauseparam *epause)

{

	struct mac_device *mac_dev;

	struct dpaa_priv *priv;



	priv = netdev_priv(net_dev);

	mac_dev = priv->mac_dev;



	if (!net_dev->phydev) {

		netdev_err(net_dev, "phy device not initialized\n");

		return;

	}



	epause->autoneg = mac_dev->autoneg_pause;

	epause->rx_pause = mac_dev->rx_pause_active;

	epause->tx_pause = mac_dev->tx_pause_active;

}



static int dpaa_set_pauseparam(struct net_device *net_dev,

			       struct ethtool_pauseparam *epause)

{

	struct mac_device *mac_dev;

	struct phy_device *phydev;

	bool rx_pause, tx_pause;

	struct dpaa_priv *priv;

	u32 newadv, oldadv;

	int err;



	priv = netdev_priv(net_dev);

	mac_dev = priv->mac_dev;



	phydev = net_dev->phydev;

	if (!phydev) {

		netdev_err(net_dev, "phy device not initialized\n");

		return -ENODEV;

	}



	if (!(phydev->supported & SUPPORTED_Pause) ||

	    (!(phydev->supported & SUPPORTED_Asym_Pause) &&

	    (epause->rx_pause != epause->tx_pause)))

		return -EINVAL;



	/* The MAC should know how to handle PAUSE frame autonegotiation before

	 * adjust_link is triggered by a forced renegotiation of sym/asym PAUSE

	 * settings.

	 */

	mac_dev->autoneg_pause = !!epause->autoneg;

	mac_dev->rx_pause_req = !!epause->rx_pause;

	mac_dev->tx_pause_req = !!epause->tx_pause;



	/* Determine the sym/asym advertised PAUSE capabilities from the desired

	 * rx/tx pause settings.

	 */

	newadv = 0;

	if (epause->rx_pause)

		newadv = ADVERTISED_Pause | ADVERTISED_Asym_Pause;

	if (epause->tx_pause)

		newadv |= ADVERTISED_Asym_Pause;



	oldadv = phydev->advertising &

			(ADVERTISED_Pause | ADVERTISED_Asym_Pause);



	/* If there are differences between the old and the new advertised

	 * values, restart PHY autonegotiation and advertise the new values.

	 */

	if (oldadv != newadv) {

		phydev->advertising &= ~(ADVERTISED_Pause

				| ADVERTISED_Asym_Pause);

		phydev->advertising |= newadv;

		if (phydev->autoneg) {

			err = phy_start_aneg(phydev);

			if (err < 0)

				netdev_err(net_dev, "phy_start_aneg() = %d\n",

					   err);

		}

	}



	fman_get_pause_cfg(mac_dev, &rx_pause, &tx_pause);

	err = fman_set_mac_active_pause(mac_dev, rx_pause, tx_pause);

	if (err < 0)

		netdev_err(net_dev, "set_mac_active_pause() = %d\n", err);



	return err;

}



const struct ethtool_ops dpaa_ethtool_ops = {

	.get_settings = dpaa_get_settings,

	.set_settings = dpaa_set_settings,

	.get_drvinfo = dpaa_get_drvinfo,

	.get_msglevel = dpaa_get_msglevel,

	.set_msglevel = dpaa_set_msglevel,

	.nway_reset = dpaa_nway_reset,

	.get_pauseparam = dpaa_get_pauseparam,

	.set_pauseparam = dpaa_set_pauseparam,

	.get_link = ethtool_op_get_link,

};