Date: Fri, 13 Apr 2007 08:36:25 -0700 From: "Joseph Golio" <joseph.golio@isilon.com> To: <freebsd-acpi@freebsd.org> Subject: Help Message-ID: <0C40B34038FD824FACDB387E778872876C17C7@seaxch08.desktop.isilon.com>
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Folks, I'm new to ACPI and I'm in the process of trying to figure out how I can attach a handler to a GPE, at least I think it's a GPE. A bit of background is in order... =20 I'm working with a motherboard that has the Intel Blackford chipset. The chipset is wired in such a way that the MCH ERR[2] output is connected to the PIRQF/GPI<3> input pin of the ICH. I have the MCH configured to assert ERR2 on certain error conditions on the FSB, FBD Channels, PCI buses, etc. I also have the ICH configured to generate an SCI when PIRQF asserts. As I understand it from reading the ESB2 (ICH) docs, this generates an IRQ 21. When I force an error, I get the following error message on the console: =20 ACPI-0800: *** Error: AcpiEvGpeDispatch: No handler or method for GPE[13], disabling event =20 I've started reading the ACPI 3.0 Spec, but, needless to say, that's quite a challenge. So, first I'd like to understand the binding of IRQ 21 in the ICH's APIC to the GPE[13] that ACPI is obviously seeing. Next, I'd like to understand if it's possible to attach my own handler to the GPE[13] rather than have ACPI deal with it.=20 =20 Any and all help would be greatly appreciated. =20 Thanks, =20 Joe Golio
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