cvs commit: src/sys/dev/fdc fdc_isa.c

[Wilko Bulte]

On Wed, Sep 01, 2004 at 02:49:04PM +0100, Doug Rabson wrote..
> On Tue, 2004-08-31 at 21:42, M. Warner Losh wrote:
> > In message: <20040831203807.GA60718 at freebie.xs4all.nl>
> >             Wilko Bulte <wb at freebie.xs4all.nl> writes:
> > : On Tue, Aug 31, 2004 at 08:37:10PM +0000, Warner Losh wrote..
> > : > imp         2004-08-31 20:37:10 UTC
> > : > 
> > : >   FreeBSD src repository
> > : > 
> > : >   Modified files:
> > : >     sys/dev/fdc          fdc_isa.c 
> > : >   Log:
> > : >   When ISA_PNP_PROBE is called, it will return 0 when it finds a device,
> > : >   ENOENT when there's no PNP ID for this device node, or ENXIO when there
> > : >   is one, but it doesn't match.
> > : >   
> > : >   In the nonPNP case (as most Alpha systems appear to be), we were
> > : 
> > : I think no Alpha has PNP.
> > 
> > Makes sense.  The Floppy controller usually shows up in the PNP BIOS
> > or ACPI tables.  I do believe that Alpha supports the ISA PNP,
> > however, for add-in cards.  We map both PNP BIOS and ISA PNP into the
> > same thing (which is probed with ISA_PNP_PROBE).
> 
> There is also a hardware list which SRM has that we could use to imitate
> PnP bios if someone could be bothered to figure out the format.

I think the starting point should be the Tru64 Device Driers guide
(or whatever the thing is called).  

-- 
Wilko Bulte				wilko at FreeBSD.org