Ok, so I've identified some regions that are accessible.  What the next 
step to figuring out what those regions are for?  Just try writing or 
reading from that space?

dave

On Feb 4, 2004, at 11:07 PM, Allen Briggs wrote:

> On Tue, Feb 03, 2004 at 04:18:33PM -0600, David Rogers wrote:
>> Hi all, I'm not sure but I think that Allen might be the best to 
>> answer
>> this question.  I was wondering if there are any examples of how to 
>> use
>> the results from nubus_scan_slot in nubus.h.  Thanks a bunch!
>
> Ummm...  Not really.  I left it in there after writing it (or something
> similar) several times.  At least, I think I'm the one who left it in
> there...  ;-)  The basic idea is that nubus cards will really only
> decode the regions that they actually use, and some cards (especially
> ae* and sn*) cards only use a few basic regions.  If we know that, and
> we can identify which regions the cards decode, we can look at the
> memory there and figure out which region might be used for registers,
> etc.
>
> So if I recall correctly, I just threw that into a probe (match) 
> routine
> for some existing nubus device with something like:
>
> 	if (na->slot == <SomeSlot>)
> 		nubus_scan_slot(na->na_tag, na->slot);
>
> The right place for it might be in nubus_print() since that's where
> we handle unconfigured devices.
>
> Does that help at all?
>
> -allen
>
> -- 
>  Allen Briggs                     briggs@wasabisystems.com
>  Wasabi Systems, Inc.             http://www.wasabisystems.com/
>