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To: Nate Lawson <nate@root.org>
From: Mark Murray <markm@FreeBSD.ORG>
In-Reply-To: Your message of "Fri, 08 Oct 2004 13:54:41 PDT."
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Date: Sat, 09 Oct 2004 09:28:25 +0100
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Subject: Re: cvs commit: src/sys/dev/acpica acpi_quirks acpi_timer.c
	acpivar.h 
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Nate Lawson writes:
> I've been analyzing how Windows and Linux handle IRQ routing.  There are 
> some interesting parts that I've mentioned before but thought I'd 
> summarize publically:
> 
> * Some systems, notably laptops, require all PCI irqs to be routed to 
> the SCI (irq 9 almost always).  Sony VAIOs are one example.
> 
> * Both $PIR and _PRT are used for ACPI irq routing.  It merges them via 
> some unknown algorithm (prefer $PIR?)

My Toshiba Libretto 110CT panics at boot because the NPX hasn't got an
irq assigned. If I turn off ACPI, it get a hard hang in isa_probe_devices().

Any ideas?

M
--
Mark Murray
iumop ap!sdn w,I idlaH