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Subject: RE: direct mapping firmware or out of LUC?
Date: Fri, 2 Feb 2007 11:28:32 -0800
Message-ID: <BB375AF679D4A34E9CA8DFA650E2B04E02501F91@onstor-exch02.onstor.net>
In-Reply-To: <20070201170656.634f13fa@ripper.onstor.net>
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Thread-Topic: direct mapping firmware or out of LUC?
Thread-Index: AcdGZm65X0vbjXWgSlKOIVzjBli0mAAjzUKQ
References: <20070201170656.634f13fa@ripper.onstor.net>
From: "Brian Stark" <brian.stark@onstor.com>
To: "Andy Sharp" <andy.sharp@onstor.com>
Cc: "Jonathan Goldick" <jonathan.goldick@onstor.com>,
	"Maxim Kozlovsky" <maxim.kozlovsky@onstor.com>

Andy,

Unfortunately, we don't have a LUC that does what you're looking for.  I
think making those mods also falls into the 'not-worth-it arduous bunch
of work' category. =20

On the Rev 1 FP-GE board for Cheetah, we connected 2 of the TXRX MACs
externally while the LUC was in development.  Of course, these boards
are 5+ years old now, and I'm not even sure any of these are still
laying around.  I'll take a look through the lab here and then down in
Campbell early next week.  If we can get one of these to boot-up in a
Cheetah, you could use it in basically the same way as Bobcat.


Brian


> -----Original Message-----
> From: Andrew Sharp [mailto:andy.sharp@onstor.com]=20
> Sent: Thursday, February 01, 2007 5:07 PM
> To: Brian Stark
> Cc: Jonathan Goldick; Maxim Kozlovsky
> Subject: direct mapping firmware or out of LUC?
>=20
> Hi Brian,
>=20
> Well, things have gone a certain distance on the TXRX on a=20
> bobcat, however there is the problem, which I've only=20
> recently begun to grok fully, that there is this LUC MUX FPGA=20
> chip thing that is preventing me from using the ethernet MACs=20
> directly.
>=20
> Burning question, do we have a firmware image for the LUC=20
> that will direct map one fifo to one MAC with no LUC header=20
> required, that maybe you guys have laying around somewhere=20
> that I can use?  Otherwise, to get any networking to go, I=20
> would have to hack the Linux driver for the Sibyte GigE ports=20
> to add the LUC/MUX header, and that would actually be an=20
> arduous bunch of work.  A not-worth-it arduous bunch of work.
> Which means that there would be no networking, which means=20
> there would be no point going further with the TXRX effort.
>=20
> I thought maybe there was such a thing for 2220s or for=20
> bringup/testing or something like that me hopes.
>=20
> Or maybe a board with the third Sibyte GigE port directly=20
> connected to a MAC?  Anything?  A bobcat with no LUC?
>=20
> Cheers,
>=20
> a
>=20
