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Date: Wed, 16 Jun 2010 15:27:22 -0400
Message-ID: <AANLkTinramcCiwHnfj9Ln84ivemWKPGfOWwPwDscbAND@mail.gmail.com>
From: Alexander Sack <pisymbol@gmail.com>
To: Jack Vogel <jfvogel@gmail.com>
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Cc: Juli Mallett <jmallett@freebsd.org>, freebsd-net@freebsd.org,
	Andrew Boyer <aboyer@averesystems.com>
Subject: Re: Dual-rate transceivers with ixgbe?
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On Mon, Jun 14, 2010 at 1:19 PM, Jack Vogel <jfvogel@gmail.com> wrote:
> I am NOT going to accept patches to defeat the code that Intel has put in
> place,
> if you want to hack the code that's your perogative but its like any other
> custom
> change, you made it, you manage it.
>
> 1G SFP do not work and are not supported, there IS a supported SFP+
> multispeed
> that can link at 1G, this was tested here.


Jack, understood.  I won't submit my final patch with the work around to you.

However, I have a  82599EB with an Intel dual-rate SFP+ receiver which
will not come in 1G mode no matter how hard I try.   I have dumped the
AUTOC and LINKS register and the card is not happy.

Basically the driver:

Writes 0xC0905004 to AUTOC  to start AN/Link startup and the LINKS
immediately reports 0x203c0001 before looking in
setup_multispeed_fiber->setup_mac_link_82599 etc.

Can you confirm with your test engineer that the Intel dual-rate SFP+
works in 1Gbe mode on FreeBSD?

Thanks!

-aps

PS The cables I have are good and the optical tester shows they are
active as well as plugging them into another card with a standard SFP
module (Finisar).