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Commit d005ba6c authored by Ben Hutchings's avatar Ben Hutchings Committed by David S. Miller
Browse files

mdio: Expose 10GBASE-T MDI-X status via ethtool 



This is available in a standard MDIO register in 10GBASE-T PHYs.

Signed-off-by: default avatarBen Hutchings <bhutchings@solarflare.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b8facca0

drivers/net/mdio.c

+17 −0
Original line number Diff line number Diff line
@@ -296,6 +296,23 @@ void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio, 
		ecmd->duplex = (reg & MDIO_CTRL1_FULLDPLX ||

				ecmd->speed == SPEED_10000);

	}



	/* 10GBASE-T MDI/MDI-X */

	if (ecmd->port == PORT_TP && ecmd->speed == SPEED_10000) {

		switch (mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,

					MDIO_PMA_10GBT_SWAPPOL)) {

		case MDIO_PMA_10GBT_SWAPPOL_ABNX | MDIO_PMA_10GBT_SWAPPOL_CDNX:

			ecmd->eth_tp_mdix = ETH_TP_MDI;

			break;

		case 0:

			ecmd->eth_tp_mdix = ETH_TP_MDI_X;

			break;

		default:

			/* It's complicated... */

			ecmd->eth_tp_mdix = ETH_TP_MDI_INVALID;

			break;

		}

	}

}

EXPORT_SYMBOL(mdio45_ethtool_gset_npage);

include/linux/mdio.h

+9 −0
Original line number Diff line number Diff line
@@ -45,6 +45,7 @@ 
#define MDIO_PHYXS_LNSTAT	24	/* PHY XGXS lane state */



/* Media-dependent registers. */

#define MDIO_PMA_10GBT_SWAPPOL	130	/* 10GBASE-T pair swap & polarity */

#define MDIO_PMA_10GBT_TXPWR	131	/* 10GBASE-T TX power control */

#define MDIO_PMA_10GBT_SNR	133	/* 10GBASE-T SNR margin, lane A.

					 * Lanes B-D are numbered 134-136. */
@@ -195,6 +196,14 @@ 
#define MDIO_PHYXS_LNSTAT_SYNC3		0x0008

#define MDIO_PHYXS_LNSTAT_ALIGN		0x1000



/* PMA 10GBASE-T pair swap & polarity */

#define MDIO_PMA_10GBT_SWAPPOL_ABNX	0x0001	/* Pair A/B uncrossed */

#define MDIO_PMA_10GBT_SWAPPOL_CDNX	0x0002	/* Pair C/D uncrossed */

#define MDIO_PMA_10GBT_SWAPPOL_AREV	0x0100	/* Pair A polarity reversed */

#define MDIO_PMA_10GBT_SWAPPOL_BREV	0x0200	/* Pair B polarity reversed */

#define MDIO_PMA_10GBT_SWAPPOL_CREV	0x0400	/* Pair C polarity reversed */

#define MDIO_PMA_10GBT_SWAPPOL_DREV	0x0800	/* Pair D polarity reversed */



/* PMA 10GBASE-T TX power register. */

#define MDIO_PMA_10GBT_TXPWR_SHORT	0x0001	/* Short-reach mode */