diff options
| author | Brad Smith <brad@cvs.openbsd.org> | 2008-06-11 23:53:50 +0000 |
|---|---|---|
| committer | Brad Smith <brad@cvs.openbsd.org> | 2008-06-11 23:53:50 +0000 |
| commit | 6e8e11941e3e8ae7e57e33cd61028855852e424f (patch) | |
| tree | 536680a51b63ea5dd25c1d264eebc404a082cac6 /sys/dev/mii | |
| parent | e0facaa9d50ea6110ce45a9faca8ebdf42a985a8 (diff) | |
Add a few comments.
Diffstat (limited to 'sys/dev/mii')
| -rw-r--r-- | sys/dev/mii/brgphy.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/dev/mii/brgphy.c b/sys/dev/mii/brgphy.c index 3c233c7f8d7..cd5be3501c2 100644 --- a/sys/dev/mii/brgphy.c +++ b/sys/dev/mii/brgphy.c @@ -1,4 +1,4 @@ -/* $OpenBSD: brgphy.c,v 1.79 2008/06/10 21:18:41 brad Exp $ */ +/* $OpenBSD: brgphy.c,v 1.80 2008/06/11 23:53:49 brad Exp $ */ /* * Copyright (c) 2000 @@ -411,6 +411,7 @@ brgphy_mii_phy_auto(struct mii_softc *sc) brgphy_loop(sc); PHY_RESET(sc); + /* Enable speed in the 1000baseT control register */ ktcr = BRGPHY_1000CTL_AFD|BRGPHY_1000CTL_AHD; if (sc->mii_model == MII_MODEL_xxBROADCOM_BCM5701) ktcr |= BRGPHY_1000CTL_MSE|BRGPHY_1000CTL_MSC; @@ -423,6 +424,7 @@ brgphy_mii_phy_auto(struct mii_softc *sc) PHY_WRITE(sc, BRGPHY_MII_ANAR, anar); DELAY(1000); + /* Start autonegotiation */ PHY_WRITE(sc, BRGPHY_MII_BMCR, BRGPHY_BMCR_AUTOEN | BRGPHY_BMCR_STARTNEG); PHY_WRITE(sc, BRGPHY_MII_IMR, 0xFF00); @@ -430,6 +432,7 @@ brgphy_mii_phy_auto(struct mii_softc *sc) return (EJUSTRETURN); } +/* Enable loopback to force the link down. */ void brgphy_loop(struct mii_softc *sc) { @@ -474,6 +477,7 @@ brgphy_reset(struct mii_softc *sc) break; } + /* Handle any bge (NetXtreme/NetLink) workarounds. */ if (strcmp(devname, "bge") == 0) { bge_sc = sc->mii_pdata->mii_ifp->if_softc; @@ -520,6 +524,7 @@ brgphy_reset(struct mii_softc *sc) PHY_READ(sc, BRGPHY_MII_PHY_EXTCTL) & ~BRGPHY_PHY_EXTCTL_3_LED); } + /* Handle any bnx (NetXtreme II) workarounds. */ } else if (strcmp(devname, "bnx") == 0) { brgphy_ber_bug(sc); |