Re: Regarding enabling IOAPIC on Intel Dual core processor based

On Tuesday 01 December 2009 5:00:06 pm Ravi Shankar wrote:
> Hi,
>=20
>  We are using Freebsd6.2 bases OS on our LV 5200 Series Intel Dual Core X=
eon
> bases processor(Wolfdale-DP-ULV). In the carrier board hosting the proces=
sor
> we have BCM5703 controller.
> Currently we are using only one core in 32 bit mode and planning to use d=
ual
> 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 beyo=
nd
> IRQ16),looks like the controller is interrupting on 17 while driver waits=
 on
> 10.
>=20
>   When I stop and loader and assign it manually using config command "set
> hw.pci8.9.INTA.irq=3D=9417=94" , everything works fine. Would be great if=
 some one
> can throw some light on this IRQ mapping when IOAPIC is enabled and possi=
ble
> fix ( Software or BIOS?)

This sounds like a BIOS issue.  Are you using ACPI?  If so, can you provide=
=20
the output of 'acpidump -t' along with a dmesg?  If you aren't using ACPI, =
can=20
you provide the output of 'mptable' along with a dmesg?

=2D-=20
John Baldwin
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