Regarding enabling IOAPIC on Intel Dual core processor based boards having Broadcom controller

[Ravi Shankar]

> Hi,
> 
>  We are using Freebsd6.2 bases OS on our LV 5200 Series
> Intel Dual Core Xeon bases processor(Wolfdale-DP-ULV). In
> the carrier board hosting the processor we have BCM5703
> controller.
> Currently we are using only one core in 32 bit mode and
> planning to use dual core where we need to enable IOAPIC.
> When IOAPIC is not enabled I see the bcm/bge driver is
> attached to IRQ10 and everything works fine, but when I
> enable IOAPIC I still see the boot msgs show that bge is
> attached to irq10 but the Broadcom controller does not come
> up. I found interrupt storm on irq17 ( remember without
> IOAPIC enable there are not IRQ assignments beyond
> IRQ16),looks like the controller is interrupting on 17 while
> driver waits on 10.
> 
>   When I stop and loader and assign it manually using
> config command "set hw.pci8.9.INTA.irq=”17”" ,
> everything works fine. Would be great if some one can throw
> some light on this IRQ mapping when IOAPIC is enabled and
> possible fix ( Software or BIOS?)
> 
> NOTE: Other devices ( Intel controller (em driver)) are
> working fine only this BCM5703 is having issues with IOAPIC
> 
> Thanks,
> Ravi
> 
> 
> 
>