Re: gigE negotiation failure with wm0

[Brad <brad%comstyle.com@localhost>]

On Tue, 9 Sep 2008 11:07:51 -0500
David Young <dyoung%pobox.com@localhost> wrote:

> On Tue, Sep 09, 2008 at 11:44:31AM -0400, Steven M. Bellovin wrote:
> > Here are the wm0 and phy lines from dmesg:
> > 
> > wm0 at pci0 dev 25 function 0: Intel i82801H (M_AMT) LAN Controller,
> > rev. 3 wm0: interrupting at ioapic0 pin 20 (irq 11)
> > wm0: PCI-Express bus
> > wm0: FLASH
> > wm0: Ethernet address 00:1e:37:18:93:c5
> > igphy0 at wm0 phy 1: i82566 10/100/1000 media interface, rev. 0
> > igphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT,
> > 1000baseT-FDX, auto
> 
> Steven,
> 
> Christoph Egger mentioned this patch to me, yesterday,
> 
> http://article.gmane.org/gmane.os.openbsd.cvs/79169
> 
> I have not looked into it, so I don't know if it may help your problem
> or not.
> 
> Dave

This will not help with the problem. Looking at igphy(4) I can see it is
programming DSP override values into the third generation IGP PHY which
it should not. First I would make the code only call the DSP load function
for the first two generations of PHY (represented by a single PHY id). Then
I would also take a look at...

http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/e1000/e1000_phy.c

e1000_phy_init_script_igp3() and create another DSP load function for
the third generation PHY and plug in those DSP values.

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