Add support for parsing the media blocks from the SROM on 21143

adapters. This is necessary in order to make this driver work with
the built-in ethernet on the alpha Miata machines. These systems
have a 21143-PC chip on-board and optional daughtercards with either
a 10/100 MII transceiver or a 10baseT/10base2 transceiver. In both
cases, you need to twiddle the GPIO bits on the controller in order
to turn the transceivers on, and you have to read the media info
from the SROM in order to find out what bits to twiddle.

1 files changed, 15 insertions, 9 deletions

diff --git a/sys/dev/mii/dcphy.c b/sys/dev/mii/dcphy.c
index 73e241e..ad2599c 100644
--- a/sys/dev/mii/dcphy.c
+++ b/sys/dev/mii/dcphy.c
@@ -179,12 +179,17 @@ static int dcphy_attach(dev)
 		sc->mii_capabilities = BMSR_ANEG|BMSR_10TFDX|BMSR_10THDX;
 		break;
 	default:
-		ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP,
-		    sc->mii_inst), BMCR_LOOP|BMCR_S100);
-
-		sc->mii_capabilities =
-		    BMSR_ANEG|BMSR_100TXFDX|BMSR_100TXHDX|
-		    BMSR_10TFDX|BMSR_10THDX;
+		if (dc_sc->dc_pmode == DC_PMODE_SIA) {
+			sc->mii_capabilities =
+			    BMSR_ANEG|BMSR_10TFDX|BMSR_10THDX;
+		} else {
+			ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP,
+			    sc->mii_inst), BMCR_LOOP|BMCR_S100);
+
+			sc->mii_capabilities =
+			    BMSR_ANEG|BMSR_100TXFDX|BMSR_100TXHDX|
+			    BMSR_10TFDX|BMSR_10THDX;
+		}
 		break;
 	}
 
@@ -429,10 +434,11 @@ dcphy_status(sc)
 	}
 
 skip:
-	if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SCRAMBLER)
-		mii->mii_media_active |= IFM_100_TX;
-	else
+
+	if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL)
 		mii->mii_media_active |= IFM_10_T;
+	else
+		mii->mii_media_active |= IFM_100_TX;
 	if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX)
 		mii->mii_media_active |= IFM_FDX;