From owner-freebsd-hackers@FreeBSD.ORG  Wed Apr 11 11:48:27 2007
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Date: Wed, 11 Apr 2007 21:24:54 +1000
From: Alan Garfield <alan@fromorbit.com>
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Cc: hackers@freebsd.org
Subject: Re: Resources and ACPI
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takawata@jp.freebsd.org wrote:
>> If the resources are allocated how do I access/see them?
> 
>     sc->sc_rid1 = 0;
>     sc->sc_res1 = bus_alloc_resource_any(self, SYS_RES_IOPORT, &sc->sc_rid, RF_ACTIVE);
>     sc->sc_rid2 = 0;
>     sc->sc_res2 = bus_alloc_resource_any(self, SYS_RES_IOPORT, &sc->sc_rid, RF_ACTIVE);
>     value_af =   bus_space_read_8(rman_get_bustag(sc->sc_res2), rman_get_bushandle(sc->sc_res2), 1);

Thanks for this, but how does on tell which resources have been 
allocated to which other than manually specifying them with 
bus_alloc_resource()?

This is the bit that's confusing me, it seem like magic happens but I 
need to know which resource is which.

Many thanks in advance!

Alan.