Date: Fri, 03 Sep 2004 09:34:23 -0700 From: Nate Lawson <nate@root.org> To: Markus Brueffer <markus@brueffer.de> Cc: current@freebsd.org Subject: Re: Interrupt storm on uhciX with acpi_pci_link.c 1.24.2.3 Message-ID: <41389D0F.9030204@root.org> In-Reply-To: <200409030255.00577.markus@brueffer.de> References: <413768A9.4020904@root.org> <200409030255.00577.markus@brueffer.de>
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Markus Brueffer wrote:
> Hi Nate,
>
> On Thursday 02 September 2004 20:38, Nate Lawson wrote:
>
>>Your ASL is at fault here. It defines a mixed set of APIC and PCI link
>>irq devices. (See the _PRT for PCI0, the APIC object). The MPtable is
>>correct. Here is the part that is wrong:
>>
>> Name (APIC, Package (0x18)
>> {
>> ...
>> Package (0x04)
>> {
>> 0x0004FFFF,
>> 0x03,
>> \_SB.LNKC,
>> 0x00
>> },
>>
>>This one should be:
>>
>> Package (0x04)
>> {
>> 0x0004FFFF,
>> 0x03,
>> 0x00,
>> 0x12,
>> }
>>
>>It should be possible to add this to /boot/loader.conf:
>>
>>hw.acpi.pci.link.0.4.3.irq="18"
>
> As you already expected, this doesn't work.
I'll send you a patch that may fix this.
>>But since 18 won't be in your list of valid irqs, your best bet is to
>>patch your ASL as above and recompile with iasl.
>
>
> Patching the ASL did the trick. Thank you very much!
Thanks to jhb@ for also helping with this.
> While compiling tha ASL I got the following warning:
>
> markus-cuv4x-d.asl.patched 316: Method (\_WAK, 1, NotSerialized)
> Warning 2026 - ^ Reserved method must
> return a value (_WAK)
>
> Maybe this information is of some use for you.
Nope, the warning is harmless. If you want to feel better, you can put
a Return (Package { 0, 0 }) in there (see the acpi debugging handbook
page for exact syntax).
>>Perhaps a BIOS upgrade will have this fixed?
>
> I already have the latest BIOS installed and I doubt that there will be a new
> one in the future (the current one is from mid 2002) :(
Ok.
-Nate
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