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Date: Wed, 1 Oct 2003 11:28:45 -0700 (PDT)
From: Nate Lawson <nate@root.org>
To: Jeremy Bingham <jeremy@satanosphere.com>
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cc: freebsd-current@freebsd.org
Subject: Re: Problem w/ ACPI in -CURRENT: Update
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On Wed, 1 Oct 2003, Jeremy Bingham wrote:
> On 01/10/03 09:33 -0700, Nate Lawson wrote:
> > > > As far as debugging prints, add the following printfs to
> > > > acpi_cmbat_get_bif():
> > > >
> > > >     printf("Before getting BIF\n");
> > > >     as = AcpiEvaluateObject(h, "_BIF", NULL, &bif_buffer);
> > > >     printf("After getting BIF\n");
> > > >
> > > > -Nate
> >
> > Ok, that's good to know.  How about the printfs?  Did the second one
> > trigger?  I could use a URL to your ASL and full dmesg on boot:
>
> The second one did not trigger (I had actually been using ACPI_VPRINT
> for a while to get info like that). I have a dump of my ASL here:
> http://home.satanosphere.com/bsd/jeremy.asl.gz.

dmesg is not necessary.  The only way to find what is hanging is to keep
working printfs deeper into the _BIF method.  Start with
AcpiEvaluateObject in sys/contrib/dev/acpica/nsxfeval.c and sprinkle
printf A, B, C etc. throughout to find where it hangs.  Alternatively, if
you have a serial console and gdb, you can step through the method.

-Nate