netdev - Re: e100 breakage located

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Message-ID: <4807377b0611301134q33d1cd78l5a1f2eda33da21bc@mail.gmail.com>
Date:	Thu, 30 Nov 2006 11:34:19 -0800
From:	"Jesse Brandeburg" <jesse.brandeburg@...il.com>
To:	"Amin Azez" <azez@...mechanic.net>
Cc:	linux-kernel@...r.kernel.org, Michael.ODonnell@...atus.com,
	"NetDEV list" <netdev@...r.kernel.org>,
	"Auke Kok" <auke-jan.h.kok@...el.com>
Subject: Re: e100 breakage located

sorry for the delay, your mail got marked as spam.  In the future
please copy networking issues to netdev@...r.kernel.org, and be sure
to copy the maintainers of the driver you're having problems with
(they are in the MAINTAINERS file)

On 11/22/06, Amin Azez <azez@...mechanic.net> wrote:
> I notice a patch in 2005 from Micahel O'Donnel to the e100.c driver has
> stopped auto-crossover working on some e100 devices we use.
>
> On one system the auto-negotiation was restored by commenting out:
> (nic->mac == mac_82551_10) in function e100_phy_init where the MDI/MDI-X
> is disabled.

are you sure that patch did that?  What version of e100 are you using?
we've since enabled MDI-X on most parts with this patch:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=60ffa478759f39a2eb3be1ed179bc3764804b2c8;hp=09e590e5d5a93f2eaa748a89c623258e6bad1648

Please try the latest kernel or the latest e100 available from e1000.sf.net
if that doesn't work we'll need to know what kernel are you using?

> lspci reports:
>  01:04.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100]
> (rev 10)
>  01:04.0 Class 0200: 8086:1229 (rev 10)
>
> and on another device
>  01:05.0 Ethernet controller: Intel Corp. 82559ER (rev 10)
>  01:01.0 Class 0200: 8086:1209 (rev 10)
>
> So it is true that we are revision 10, but 82557/9 not 82551.

you're getting confused between decimal and hex.  82551 is rev 16 (0x10)

> I must confess that having gotten this far, I am lost. Of course I can
> "fix" the driver for our hardware but I am not sure how to contrive a
> general fix.
>
> Maybe the actual damage is done in
>  e100_get_defaults(struct nic *nic)
> where nic->mac is set to nic->rev_id ?
>
> But it generally seems to be a failure to take into account the actual
> hardware type, and only consider the revision.

the only relevant way to tell e100 parts apart is the revision id
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