Re: PROBLEM: Network hanging - Tulip driver with Netgear (Lite-On)

[Manfred Spraul]

Jeff Garzik wrote:
> 
> Manfred Spraul wrote:
> > Could you double check the code in tulip_core.c, around line 1450?
> > IMHO it's bogus.
> >
> > 1) if the network card contains multiple mii's, then the the advertised
> > value of all mii's is changed to the advertised value of the first mii.
> 
> I'm really curious about this one myself.
> 
> Since I haven't digested all of the tulip media stuff in my brain yet,
> and since I'm not familiar with all the corner cases, I'm loathe to
> change the tulip media stuff without fully understanding what's going
> on.
> 
> If you have a single controller with multiple MII phys...  how does one
> select the phy of choice (for tulip, in the absence of SROM media
> table...)?

I'd choose the first one with a link partner.

> And once phy A has been selected out of N available as the
> active phy, should you care about the others at all?
>

Not until the link beat disappears.
Then scan all existing phy's and select the phy with a link beat as the
new active phy.

At least that's what the sis900.c driver does. Are there other linux
drivers that support multiple phy's?

--
	Manfred