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Commit 5974700c authored by Ben Hutchings's avatar Ben Hutchings Committed by David S. Miller
Browse files

mii: Rewrite mii_ethtool_gset() to report mdio_support and lp_advertising 



Ignore link partner advertising flags while AN is not complete.

Compile-tested only.

Signed-off-by: default avatarBen Hutchings <bhutchings@solarflare.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 894b19a6

drivers/net/mii.c

+57 −34
Original line number Diff line number Diff line
@@ -31,7 +31,27 @@ 
#include <linux/module.h>

#include <linux/netdevice.h>

#include <linux/ethtool.h>

#include <linux/mii.h>

#include <linux/mdio.h>



static u32 mii_get_an(struct mii_if_info *mii, u16 addr)

{

	u32 result = 0;

	int advert;



	advert = mii->mdio_read(mii->dev, mii->phy_id, addr);

	if (advert & LPA_LPACK)

		result |= ADVERTISED_Autoneg;

	if (advert & ADVERTISE_10HALF)

		result |= ADVERTISED_10baseT_Half;

	if (advert & ADVERTISE_10FULL)

		result |= ADVERTISED_10baseT_Full;

	if (advert & ADVERTISE_100HALF)

		result |= ADVERTISED_100baseT_Half;

	if (advert & ADVERTISE_100FULL)

		result |= ADVERTISED_100baseT_Full;



	return result;

}



/**

 * mii_ethtool_gset - get settings that are specified in @ecmd
@@ -43,8 +63,8 @@ 
int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd)

{

	struct net_device *dev = mii->dev;

	u32 advert, bmcr, lpa, nego;

	u32 advert2 = 0, bmcr2 = 0, lpa2 = 0;

	u16 bmcr, bmsr, ctrl1000 = 0, stat1000 = 0;

	u32 nego;



	ecmd->supported =

	    (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
@@ -62,50 +82,51 @@ int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd) 


	/* this isn't fully supported at higher layers */

	ecmd->phy_address = mii->phy_id;

	ecmd->mdio_support = MDIO_SUPPORTS_C22;



	ecmd->advertising = ADVERTISED_TP | ADVERTISED_MII;

	advert = mii->mdio_read(dev, mii->phy_id, MII_ADVERTISE);

	if (mii->supports_gmii)

		advert2 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);



	if (advert & ADVERTISE_10HALF)

		ecmd->advertising |= ADVERTISED_10baseT_Half;

	if (advert & ADVERTISE_10FULL)

		ecmd->advertising |= ADVERTISED_10baseT_Full;

	if (advert & ADVERTISE_100HALF)

		ecmd->advertising |= ADVERTISED_100baseT_Half;

	if (advert & ADVERTISE_100FULL)

		ecmd->advertising |= ADVERTISED_100baseT_Full;

	if (advert2 & ADVERTISE_1000HALF)

		ecmd->advertising |= ADVERTISED_1000baseT_Half;

	if (advert2 & ADVERTISE_1000FULL)

		ecmd->advertising |= ADVERTISED_1000baseT_Full;



	bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);

	lpa = mii->mdio_read(dev, mii->phy_id, MII_LPA);

	bmsr = mii->mdio_read(dev, mii->phy_id, MII_BMSR);

	if (mii->supports_gmii) {

		bmcr2 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);

		lpa2 = mii->mdio_read(dev, mii->phy_id, MII_STAT1000);

 		ctrl1000 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);

		stat1000 = mii->mdio_read(dev, mii->phy_id, MII_STAT1000);

	}

	if (bmcr & BMCR_ANENABLE) {

		ecmd->advertising |= ADVERTISED_Autoneg;

		ecmd->autoneg = AUTONEG_ENABLE;



		nego = mii_nway_result(advert & lpa);

		if ((bmcr2 & (ADVERTISE_1000HALF | ADVERTISE_1000FULL)) &

		    (lpa2 >> 2))

		ecmd->advertising |= mii_get_an(mii, MII_ADVERTISE);

		if (ctrl1000 & ADVERTISE_1000HALF)

			ecmd->advertising |= ADVERTISED_1000baseT_Half;

		if (ctrl1000 & ADVERTISE_1000FULL)

			ecmd->advertising |= ADVERTISED_1000baseT_Full;



		if (bmsr & BMSR_ANEGCOMPLETE) {

			ecmd->lp_advertising = mii_get_an(mii, MII_LPA);

			if (stat1000 & LPA_1000HALF)

				ecmd->lp_advertising |=

					ADVERTISED_1000baseT_Half;

			if (stat1000 & LPA_1000FULL)

				ecmd->lp_advertising |=

					ADVERTISED_1000baseT_Full;

		} else {

			ecmd->lp_advertising = 0;

		}



		nego = ecmd->advertising & ecmd->lp_advertising;



		if (nego & (ADVERTISED_1000baseT_Full |

			    ADVERTISED_1000baseT_Half)) {

			ecmd->speed = SPEED_1000;

		else if (nego == LPA_100FULL || nego == LPA_100HALF)

			ecmd->duplex = !!(nego & ADVERTISED_1000baseT_Full);

		} else if (nego & (ADVERTISED_100baseT_Full |

				   ADVERTISED_100baseT_Half)) {

			ecmd->speed = SPEED_100;

		else

			ecmd->speed = SPEED_10;

		if ((lpa2 & LPA_1000FULL) || nego == LPA_100FULL ||

		    nego == LPA_10FULL) {

			ecmd->duplex = DUPLEX_FULL;

			mii->full_duplex = 1;

			ecmd->duplex = !!(nego & ADVERTISED_100baseT_Full);

		} else {

			ecmd->duplex = DUPLEX_HALF;

			mii->full_duplex = 0;

			ecmd->speed = SPEED_10;

			ecmd->duplex = !!(nego & ADVERTISED_10baseT_Full);

		}

	} else {

		ecmd->autoneg = AUTONEG_DISABLE;
@@ -116,6 +137,8 @@ int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd) 
		ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF;

	}



	mii->full_duplex = ecmd->duplex;



	/* ignore maxtxpkt, maxrxpkt for now */



	return 0;