From owner-freebsd-hackers@FreeBSD.ORG  Wed Apr 11 11:49:39 2007
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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:

>> and when the device is kldload'ed you get :-
>>
>> ----
>> jnet0: <JNet Ethernet System Interface> port 0xa8,0xae-0xaf irq 19 on
>> acpi0
>> ----
>>
>> are these resources automagically allocated for me? Or do I have to
>> allocate them myself?
> 
> You have to allocate the resource.

Ok cool, but how do I get the resource list from acpi to allocated them 
then? Other than having an array of ioports and irqs, is there a way to 
get this information from acpi?

I've done an acpidump and indeed the are _CRS and _PRS ResourceTemplates 
that describe the io and irq requirements perfectly. How do I access 
this data? ACPI seems to have very little documentation and nothing else 
seems to get resource lists (except fdc_acpi.c and uart_bus_acpi.c which 
don't seem to be complete. ACPI_EVALUATE_OBJECT?!?)

Thanks,
Alan.