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List:       freebsd-hackers
Subject:    Re: Support for RealTek RTL8125B chipset?
From:       Stephen Hocking <stephen.hocking () gmail ! com>
Date:       2020-08-02 11:05:55
Message-ID: CA+xzKjAWjUCk6m83t8pdNRWoqjvb4Eyb+W=8s4GJrCC51TeQOQ () mail ! gmail ! com
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Hi STefan,

I'm rather ignorant about the different versions of that chipset, do
you know of any place that could supply cards with them? Or should we
be calling for volunteers? A few of my boxes have RealTek ethernet
interfaces on their motherboards.

On Sun, 2 Aug 2020 at 20:42, Stefan Esser <se@freebsd.org> wrote:
>
> Am 02.08.20 um 04:47 schrieb Stephen Hocking:
> > Hi Stefan,
> >
> > Thanks for updating me on this - do you need any hardware for testing etc?
>
> Hi Stephen,
>
> thank you for the offer - I've got a main-board with RTL8125B and have
> added RTL8111H and i210-T1 cards to compare the RTL8125 with.
>
> I'm limited to 1000baseTX speed due to other available interfaces and
> switch ports, but I'd hope that if 1000baseTX works, the higher speeds
> will be simple to test (and could be come at a later time, since having
> on-board RTL8125 chips support by the base system at least at 1 Gbit/s
> is my primary goal for now).
>
> The problem is lack of documentation for the MAC and PHY, and there are
> even 4 firmware blobs for different versions of the RTL8125 alone (two
> each for RTL8125A and B since both already exist in two revisions).
>
> Since I do not have any documentation (except for the RealTek driver
> that has a friendly license, being derived from Bill Paul's FreeBSD
> driver) I do not really know which parts of the initialization and
> register setup that is different for those different chips needs to
> be merged into out driver - for now I assume a mostly verbatim copy
> of the blobs and of code fragments is the only way forward, since I
> have access to only 1 of those 4 chip versions ...
>
> Regards, STefan



-- 

  "I and the public know
  what all schoolchildren learn
  Those to whom evil is done
  Do evil in return" W.H. Auden, "September 1, 1939"
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