ACPI and INT-Routing

John Baldwin jhb at FreeBSD.org
Wed Jul 30 13:48:32 PDT 2003


On 30-Jul-2003 Markus D. wrote:
> Hello,
> 
> I have a question regarding ACPI and interupt-routing on PCI.
> 
> I have seen in DMESG output from people posting to this list entries
> like 'slot 31 INTD is routed to irq 3'. Is it an error not to have such
> lines on booting with acpi?

It is not an error, per se.  It may mean that your BIOS doesn't
support interrupt routing, but I doubt that.

> Instead the irq's are displayed along with the driver lines on booting.

Can you provide an example of this?

> Can I set any IRQ for PCI devices via acpi? My bios doesn't have any
> setting for irq.

ACPI is just an interface to the BIOS, so it basically asks the BIOS
how the interrupts are routed.

-- 

John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/


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