Re: Weird PCI interrupt delivery problem

On Fri, Dec 02, 2005 at 08:17:53AM -0500, John Baldwin wrote:
> > Argh, this is driving me up the wall. I had a hunch that it was somehow
> > connected to level-triggered interrupts. That seems to not be the case,
> > as upon closer inspection the SCI interrupt (9) gets reprogrammed to
> > level/low. I can read the ACPI status all day long and the count for
> > IRQ 9 goes up and up without freezing...
>
> Interesting. How about IRQ 11 in non-APIC mode, is it programmed to
> level/low? I've seen BIOSes that do very stupid things like have the link
> devices set to level/hi or edge/lo or even edge/hi. A verbose boot should
> tell you if any settings are changed though, and in the APIC case you should
> see the initial defaults as well.

Added some printfs to i386/isa/atpic.c. At bootup, everything is
programmed by the BIOS to edge/high, except IRQ 11 which is set to
level/low. FreeBSD doesn't seem to be changing that as far as I can
tell. (this is -APIC -ACPI)

Craig
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