Date: Tue, 07 Sep 1999 14:36:00 -0700 From: Jason Thorpe <thorpej@nas.nasa.gov> To: Bill Paul <wpaul@skynet.ctr.columbia.edu> Cc: hackers@freebsd.org Subject: Re: Tulip device driver question Message-ID: <199909072136.OAA18714@lestat.nas.nasa.gov>
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On Tue, 7 Sep 1999 03:11:24 -0400 (EDT)
Bill Paul <wpaul@skynet.ctr.columbia.edu> wrote:
> The SiS 900 only has one combined status/control word in its
> descriptor structure (some of the bits mean different things depending
> on whether the descriptors are in the RX ring or TX ring) instead of a
> separate status and control word. The descriptors are also only 3
> longwords in size.
Yes, I know. I wrote a driver for this chip for NetBSD :-)
[ snip ... all the quirks ]
...I'm well aware of all of these :-)
Amusingly, these are the same kinds of quirks you have to deal with for
a unified *genuine DEC Tulip* driver. E.g. 21143s have internal NWAY and
MII; board manufacturer gets to choose which to use.
In any case, I have a single driver for NetBSD that works with both the PNIC
and Winbond clones, and I'm working on support for the other clones.
> And that's just the PCI devices: who knows what other oddities will
> turn up once we have cardbus support. (And we will have cardbus support
> some day soon, right Warner? Hello? Warner? You okay? Hm. Somebody want to
> call an ambulance for Warner? Thank you. Breathe, Warner. _Breathe._
> That's better.)
I think most of the Tulip-like CardBus boards use 21143s. Thankfully.
AFAIK, none of the current sets of clones are designed for CardBus
applications.
BTW, you forgot EISA (DE-425) ... when I finish all the clone support
in my unified driver, I'm going to migrate support for the genuine DEC
chips, as well.
-- Jason R. Thorpe <thorpej@nas.nasa.gov>
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