ASUS P5A broken by ACPI black-list

[Kevin Oberman]

> From: John Baldwin <jhb at FreeBSD.org>
> Date: Wed, 6 Oct 2004 13:20:44 -0400
> 
> On Tuesday 05 October 2004 04:32 pm, Kevin Oberman wrote:
> > > From: John Baldwin <jhb at FreeBSD.org>
> > > Date: Tue, 5 Oct 2004 12:09:44 -0400
> > >
> > > On Tuesday 05 October 2004 11:54 am, Kevin Oberman wrote:
> > > > > From: John Baldwin <jhb at FreeBSD.org>
> > > > > Date: Mon, 4 Oct 2004 15:57:30 -0400
> > > > >
> > > > > On Monday 04 October 2004 02:33 pm, Nate Lawson wrote:
> > > > > > Kevin Oberman wrote:
> > > > > > > It looks like interrupts from the Ethernet are not delivered
> > > > > > > without ACPI, but that is hardly your problem. I have over-ridden
> > > > > > > the black-list and things are back to normal.
> > > > > >
> > > > > > The reason this system works in Windows without ACPI is that irq
> > > > > > routing in Windows uses multiple info sources including _PIR and
> > > > > > $PIR. John Baldwin has patches to do this for us too.
> > > > >
> > > > > $PIR routing already works on FreeBSD and has worked for quite a
> > > > > while. The patches I have are to make the acpi_pci_link code work
> > > > > more like the $PIR code already does.  It doesn't change the ACPI
> > > > > code to actually use $PIR or the MPTable though.  I can try to look
> > > > > at why the ethernet device doesn't get interrupts correctly if you
> > > > > can provide verbose ACPI and non-ACPI dmesgs to look at.
> > > >
> > > > I am attaching the files. I do see some oddities with the
> > > > interrupts that I had not previously noted, but they seen to be linked
> > > > to sound, not the Ethernet. And, for whatever it's worth, "vmstat -i"
> > > > does not show my sound card, at all. dmesg indicates it should be on
> > > > IRQ 6. interrupt                          total       rate
> > > > irq0: clk                        4242251         99
> > > > irq1: atkbd0                           3          0
> > > > irq7: ppc0                             1          0
> > > > irq8: rtc                        5430044        127
> > > > irq10: xl0                         13699          0
> > > > irq13: npx0                            1          0
> > > > irq14: ata0                       166980          3
> > > > irq15: ata1                          136          0
> > > > Total                            9853115        232
> > >
> > > First, do you have a floppy drive?  IRQ 6 should be used for your floppy
> > > drive if so.  Note that $PIR says that IRQ 6 is not an option for your
> > > link devices but ACPI does.  In the non-APCI case we use IRQ 10 for both
> > > xl0 and pcm0. Are you saying that in that case pcm0 works but xl0 does
> > > not?
> >
> > The sound card works fine with ACPI but, without ACPI it fails. The
> > first tone in the file plays continuously, like there are no interrupts
> > from the sound card. :-)
> 
> Ok, well, it seems your BIOS is too busted for non-ACPI to work out of the 
> box, you can try setting a hint to force the link for your sound card to use 
> IRQ 6.  Something like 'set hw.pci.link.0x4.irq=6', or maybe 
> 'hw.pci.link.0x04.irq' if that doesn't work.
> 
> -- 
> John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
> "Power Users Use the Power to Serve"  =  http://www.FreeBSD.org
> 

Thanks, John.

This was actually an effort to avoid causing problems for people
upgrading to V5 with this card. I have no problems with running
ACPI. But, since it's blacklisted for ACPI and won't work without it,
people are going to try to upgrade and discover that their systems don't
work.

I think the best solution is to remove it from the black-list (Nate?)
and at least let it work. Then people can figure out to use TSC and not
the ACPI clock.

What would be better is a more granular black-list that simply disabled
ACPI for features that are broken. Of course, maintaining this would be
a pain.
-- 
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at es.net			Phone: +1 510 486-8634