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authorBen Hutchings <bhutchings@solarflare.com>2009-06-10 05:28:04 +0000
committerDavid S. Miller <davem@davemloft.net>2009-06-11 02:47:10 -0700
commitd005ba6cc82440d9ebf96f3ec8f79c54578b898f (patch)
tree871a9a75e1fcb6dbf9c8f3aa6944fe6a7baf2068
parentb8facca01ba381c3f8ff2391fbe3860ebc6a6bdc (diff)
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>
-rw-r--r--drivers/net/mdio.c17
-rw-r--r--include/linux/mdio.h9
2 files changed, 26 insertions, 0 deletions
diff --git a/drivers/net/mdio.c b/drivers/net/mdio.c
index 66483035f683..dc45e9856c35 100644
--- a/drivers/net/mdio.c
+++ b/drivers/net/mdio.c
@@ -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);
diff --git a/include/linux/mdio.h b/include/linux/mdio.h
index 56851646529a..cfdf1df2875e 100644
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h
@@ -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 */