Re: [ACPI] ACPI missing IRQ 9. Buggy BIOS?

[<sy...@sc...>]

On Fri, Apr 19, 2002 at 11:00:03AM +0200, Dominik Brodowski wrote:
> No problem with that: the AGP device can't be re-routed to a different IRQ, 
> but is hardwired to IRQ 9. So it'd be really bad if the PCI Interrupt Links 
> would allow the usage of this IRQ. In your DSDT this interrupt is not 
> mentioned (it could be, stating it is hardwired), but as the device driver 
> correctly assigns the IRQ this is no problem.

But in the BIOS I can assign 4 IRQs (I assume to the Interrupt Links) and
it displays the AGP card using the first one. I can change it to any IRQ I
want so it's not hardwired that way.

There's a section int interrupt pin assignment in Via hardware's KT7 FAQ
"http://www.viahardware.com/faq/kt7/faqbios.html"

This diagram explains the case pretty nicely.
"http://www.viahardware.com/faq/kt7/irqs-fig.gif"

> What I'm more curious about is your Interrupt Link A: something doesn't work 
> there, no IRQ is active (*) as it should be with acpi-20020404. 

It's only that IRQ 9 never shows in any of these even though I assign my
AGP card to some other IRQ and assign IRQ 9 to some other Interrupt Link.

Using "pci=noacpi" makes the message about interrupt not known disappear.

-- 
Ville Syrjälä
sy...@sc...
http://www.sci.fi/~syrjala/