On Sat, Oct 11, 2008 at 4:46 PM, Bruce M. Simpson <[EMAIL PROTECTED]> wrote: > Sepherosa Ziehau wrote: >> >> Are you sure you could read from BMSR? Return invalid value from BMSR >> is the usual cause of miibus attaching/probing failure. For ID1/ID2 >> reading, you could just fake some values in npe(4)'s miibus_readreg >> implementation. >> > > Thanks for the tip (from you and Pyun). I had to spoof the BMSR read to get > npe(4) to attach just to begin with. For whatever reason the chip doesn't > seem to respond on any of the PHY IDs which the Linux folk are using (5 and > 4 for npe0 (-B) and npe1 (-C) respectively). > > I noticed the ucLinux folk needed a similar patch to force driver attach > under Linux w/the IXP: > http://mailman.uclinux.org/pipermail/uclinux-dev/2005-March/031419.html > > The switch pretty much disappears after npe(4) attaches, I don't see any > activity lights or link lights at that point. This seems to happen after any > mii register access. > > If I frob things to allow rlswitch to attach, by using hints and hacking > if_npe.c, I can get dumps of the PHY register space, but it's all ones, > suggesting that it failed at xScale register level -- that would suggest the > PHY IDs are *wrong*, or something else isn't right. > > Pyun also suggested trying to manually take the PHYs out of power-down mode. > I tried that with a code snippet I sent him, but still no dice. I can't even > be sure that the PHYs are being addressed right.
Realtek's 8211[BC] PHY has a "page selector" register (0x1f), BMSR and other GMII standard registers are in page0. Does the PHY you are working with has something like the "page selector"? Best Regards, sephe -- Live Free or Die _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
