Date: Mon, 29 Oct 2001 01:22:43 +0000 From: Ian Dowse <iedowse@maths.tcd.ie> To: Jim Durham <durham@w2xo.pgh.pa.us> Cc: freebsd-mobile@freebsd.org Subject: Re: i386/31554: page fault while in kernel mode doing ifconfig of D-LINK pccard Message-ID: <200110290122.aa30136@salmon.maths.tcd.ie> In-Reply-To: Your message of "Sun, 28 Oct 2001 17:51:13 EST." <Pine.BSF.4.21.0110281749020.16532-100000@w2xo.pgh.pa.us>
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In message <Pine.BSF.4.21.0110281749020.16532-100000@w2xo.pgh.pa.us>, Jim Durha m writes: > >ukphy0: OUI 0x0010dd, model 0x0001, rev. w >uk phy0: no media present Ok, this is strange. The "no media present" error can only occur if the MII_BMSR register in the PHY has no media types specified, but the generic mii code is supposed to ignore such PHYs entirely. Something must be causing access to the PHY registers to fail either before or after the OUI is read successfully. If possible, could you try the following patch against an unmodified dev/ed/? This causes the ed driver to probe the miibus but ignore it after that, and output to the console the result of each mii register access. Hopefully that output will provide some hints as to when the PHY isn't responding. Thanks, Ian Index: ed/if_ed.c =================================================================== RCS file: /home/iedowse/CVS/src/sys/dev/ed/if_ed.c,v retrieving revision 1.173.2.11 diff -u -r1.173.2.11 if_ed.c --- ed/if_ed.c 2001/07/25 18:06:00 1.173.2.11 +++ ed/if_ed.c 2001/10/29 01:13:46 @@ -3245,6 +3245,8 @@ (*sc->mii_writebits)(sc, ED_MII_IDLE, ED_MII_IDLE_BITS); splx(s); + device_printf(dev, "phy %d reg %d val 0x%08x failed %d\n", phy, reg, + val, failed); return (failed ? 0 : val); } @@ -3273,6 +3275,7 @@ (*sc->mii_writebits)(sc, ED_MII_IDLE, ED_MII_IDLE_BITS); splx(s); + device_printf(dev, "phy %d reg %d data 0x%08x\n", phy, reg, data); } int Index: ed/if_ed_pccard.c =================================================================== RCS file: /home/iedowse/CVS/src/sys/dev/ed/if_ed_pccard.c,v retrieving revision 1.9.2.6 diff -u -r1.9.2.6 if_ed_pccard.c --- ed/if_ed_pccard.c 2001/07/25 18:06:01 1.9.2.6 +++ ed/if_ed_pccard.c 2001/10/29 01:09:58 @@ -243,6 +243,7 @@ sc->mii_writebits = ed_pccard_dlink_mii_writebits; mii_phy_probe(dev, &sc->miibus, ed_ifmedia_upd, ed_ifmedia_sts); + sc->miibus = NULL; } return (error); To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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