mdio: Expose 10GBASE-T MDI-X status via ethtool
This is available in a standard MDIO register in 10GBASE-T PHYs.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/mdio.c b/drivers/net/mdio.c
index 6648303..dc45e98 100644
--- a/drivers/net/mdio.c
+++ b/drivers/net/mdio.c
@@ -296,6 +296,23 @@
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);