Re: SGI Indigo 2, machtype and timers

[Adrian Chadd <adrian%freebsd.org@localhost>]

On Mon, 20 Apr 2026 at 17:00, Adrian Chadd <adrian%freebsd.org@localhost> wrote:

> if I force the subtype to indigo2 then all is good. Well, in serial
> console it's good. For graphics console it .. works, but it's very
> very slow. I need to go see if that's DELAY() wrong, or something in
> the grtwo driver that's not poking this GU1-Extreme card correctly.
>

It's slow because grtwo.c is reaching into dev/int.c to call
int2_wait_fifo(), and the int driver isn't yet up.
Once it probes fine then console IO is fast again.

I have a feeling I'm going to need to commit some super early
reach-through sins for this stuff so Indy
and Indigo2 machines with the 3D framebuffers aren't absolutely
terrible during early boot.

(but it did boot to asking for root device, so I guess now I can
install a drive and see if I can get netbsd
onto it!)


-adrian