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From: Nigel Roles <nigel@9fs.org>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] Hardware for venti/fossil/cpu server
Date: Wed, 22 Sep 2004 11:42:44 +0100	[thread overview]
Message-ID: <41515724.9090600@9fs.org> (raw)
In-Reply-To: <24f622bf465e6bbf6326088add97540c@collyer.net>

geoff@collyer.net wrote:

>Thanks for the explanation, Nigel.
>
>I can see now why the motherboard makers want to include a CSA
>version of the igbe, I just don't see why they felt the
>need to break the CSA version of the igbe in the process.
>I guess it's part of this crazy business of making the
>ether drivers micromanage the configuration of the PHYs
>and EEPROMs and other irrelevant rubbish that the hardware
>ought to be taking care of internally (or at least setting
>to sensible default state initially).
>
>  
>
Actually on closer inspection the marvell chip is external on the Asus
motherboard, and still only connected via (!) PCI.

Only the Marvell PHY is used by Nvidia, and the embedded Gbe is their
own.

The linux driver for the Marvell chip (Yukon aka SysKonnect sk98)
is 35000 lines. Sorry, that's not fair: 43000 including headers. See,
I said 2000 lines for the Nvidia driver was nothing.

Thus the Asus board is an example of how not to connect your
Gbe.

I'm not about to try it, but I suspect getting Plan 9 to work on the
nForce 3 chipsets would not be too bad.



  reply	other threads:[~2004-09-22 10:42 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-09-22  8:22 Matthias Teege
2004-09-22  9:24 ` geoff
2004-09-22 10:07   ` Nigel Roles
2004-09-22 10:18     ` geoff
2004-09-22 10:42       ` Nigel Roles [this message]
2004-09-22 15:01 ` jmk
2004-09-23  4:25   ` vdharani
2004-09-22 23:18     ` geoff
2004-09-22 15:19 jmk
2004-09-22 16:21 ` Matthias Teege
2004-09-22 22:57   ` geoff
2004-09-24  0:40   ` Kenji Okamoto

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