Date: Sat, 09 Oct 2004 09:28:25 +0100 From: Mark Murray <markm@FreeBSD.ORG> To: Nate Lawson <nate@root.org> Cc: cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sys/dev/acpica acpi_quirks acpi_timer.c acpivar.h Message-ID: <200410090828.i998SP5B070053@grimreaper.grondar.org> In-Reply-To: Your message of "Fri, 08 Oct 2004 13:54:41 PDT." <4166FE91.20909@root.org>
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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
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