Subject: Re: PnP weirdness
To: None <tech-kern@NetBSD.ORG>
From: Christos Zoulas <firstname.lastname@example.org>
Date: 07/29/1998 13:10:00
In article <199807291150.NAA28415@animal.cs.chalmers.se> email@example.com (Lennart Augustsson) writes:
>Are there are PnP wizards out there? I've got a problem.
No, but I'll be an apprentice.
>I don't know, but I suspect that it has to do with BIOS configuring
>the card before NetBSD does. Furthermore the CS4236B emulates
>both SB and WSS and access to either port range makes it flip
>So, is this a buggy PnP chip (CS4237 has the same problem)?
>Buggy PnP code in NetBSD? Or what? Any suggestion on
>how to fix this problem are welcome. (No, I don't want
>random inb() sprinkled in my code. :-)
You are right, somehow the bios sets up the card properly. isapnp_find
resets the card to the power-up situation, and things stop working.
There is something fishy with the card about retaining state after it's
might be a magic thing to do to the card to configure it to work properly
after isapnp_find() is called. Do you know what the bios does to initialize
Have you tried resetting the card after it is probed, and then doing the inb()
in the attach routine?