Date: Fri, 28 Oct 2005 12:31:39 -0400 From: Jung-uk Kim <jkim@FreeBSD.org> To: John Baldwin <jhb@FreeBSD.org> Cc: freebsd-acpi@FreeBSD.org, Mathieu Prevot <mathieu_prevot@yahoo.fr> Subject: Re: ACPI errors on amd64 (sempron) Message-ID: <200510281231.43130.jkim@FreeBSD.org> In-Reply-To: <200510280958.59985.jhb@freebsd.org> References: <971FCB6690CD0E4898387DBF7552B90E0323D7B6@orsmsx403.amr.corp.intel.com> <4361774E.3010709@root.org> <200510280958.59985.jhb@freebsd.org>
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On Friday 28 October 2005 09:58 am, John Baldwin wrote: > On Thursday 27 October 2005 08:56 pm, Nate Lawson wrote: > > Jung-uk Kim wrote: > > > On Thursday 27 October 2005 08:08 pm, Nate Lawson wrote: >> I disagree. It's very clear what the alignment requirements are on >> amd64 and that acpi-ca is being too strict, harming an actual >> implementation. > > I think it only shuts up a warning, does it actually change the > behavior? That was exactly my thought. ;-) > > > In fact, I have seen somebody else had similar problem: > > > > > > http://bsdforum.or.kr/viewtopic.php?p=5414#5414 > > > > > > It's Korean BSD User Forum but you may be able to read this: > > > > > > pci_link26: BIOS IRQ 10 for -2145771032.1.INTA is invalid > > > pci_link21: BIOS IRQ 11 for -2145771032.2.INTA is invalid > > > pci_link27: BIOS IRQ 3 for -2145771032.2.INTB is invalid > > > pci_link23: BIOS IRQ 10 for -2145771032.10.INTA is invalid > > > pci_link24: BIOS IRQ 11 for -2145771032.4.INTA is invalid > > > pci_link29: BIOS IRQ 11 for -2145771032.7.INTA is invalid > > > pci_link30: BIOS IRQ 10 for -2145771032.8.INTA is invalid > > > > Yes, I agree that this alone doesn't fix it. This looks to me > > like the pci_link code is pointing the interrupt source at the > > wrong part of the resource descriptor. Perhaps it is not > > incrementing the pointer correctly for 64-bit arches. > > > >From the actual code: > > /* Validate the BIOS IRQ. */ > if (!link_valid_irq(link, bios_irq)) { > device_printf(dev, "BIOS IRQ %u for %d.%d.INT%c is invalid\n", > bios_irq, pcib_get_bus(pcib), slot, pin + 'A'); > > Thus, the weird value is being retuned by pcib_get_bus(), it's not > coming out of ACPI at all. ACPI dosen't provide bus numbers, just > the slot and pin, we have to extract the bus number from the ACPI > device that has a _PRT object. what's really odd is that he is even > getting valid-looking IRQs, since we use pcib_get_bus() as the bus > number for configuration transactions. It's probably getting > truncated down to the low byte at some point and thus reading the > wrong bus, hence getting invalid IRQs I guess. The real question > here is why pcib_get_bus() is broken on this bridge. Please note that the message I posted is not from the same chipset, i. e., nForce4 chipset. The only common thing here is Athlon64/Sempron with Award BIOS. Maybe the BIOS is culprit here? Shrug... Jung-uk Kim
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