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Re: CVS commit: src/sys/dev/pci
On Sun, Jan 23, 2011 at 03:15:07AM +0000, Izumi Tsutsui wrote:
> Module Name: src
> Committed By: tsutsui
> Date: Sun Jan 23 03:15:06 UTC 2011
> Modified Files:
> src/sys/dev/pci: if_nfe.c
> Log Message:
> Pull the following fix from OpenBSD:
> >> Some nfe(4)/rlphy(4) combos don't work, because the PHY responds to all
> >> addresses on the mii bus. As a countereasure, only attach the first PHY we
> >> encounter. It is very unlikely we're going to ever see nfe(4) with
> >> multiple
> >> PHYs. The same is probably true for any modern NIC.
Not necessarily, sometimes there are 2 PHYs so that they can be switched
over if a cabling fault is detected.
There will also be the systems where the 'internal' PHY isn't used
because of specific (non-standard) media requirements.
I'm also not exactly sure what happens when MII crossover is used to
directly connect 2 MAC units on the same PCB.
David Laight: david%l8s.co.uk@localhost
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