Re: [coreboot] Can not have IRQ from ethernet device connected to the PCIe #4 in legacy mode

[benoit]

Hi Ben,

I confirm that the workaround is working well.
Tested it today.
My ethernet controller is working right now.

Thanks for your help
Benoit

On 11/02/2016 00:42, Ben Gardner wrote:
> Hi Benoit,
>
> There was a bit of a discussion about interrupt routing a while back
> (Dec 2015) on FSP Baytrail.
> Apparently the IRQs were not swizzled correctly.
>
> https://review.coreboot.org/#/c/12684/
>
> If you are not using a recent version of coreboot, you may need to
> back-port that change.
>
> Ben
>
> On Wed, Feb 10, 2016 at 3:00 PM, benoit  wrote:
> > Hi all,
> >
> > I am facing a legacy IRQ under OS.
> > I am currently using Coreboot + FSP on baytrail.
> > My OS is running with IRQ in legacy using PIRQ described in
> > coreboot/src/mainboard/intel/bayleybay_fsp/irqroute.h .
> > Under the OS USB, SATA, SMBus are working well using legacy interrupt.
> > Nevertheless I have an ethernet device connected on the PCIe root #4 and
> > no IRQs are received.
> >
> > I tried to change the IRQ in the interrupt line register without success.
> >
> > I can compare also with a Phoenix BIOS, and with the same OS binary the
> > ethernet is working.
> >
> > I check out also the ilb registers + 0x4d0 and 0x4d1 registers (ECL).
> > Everything is correctly initalized.
> >
> > Do I need to activate/deactivate something in the PCIe root #4 to
> > forward legacy interrupt to the 8259 PIC ?
> >
> > Many thanks in advance
> > Benoit