On Sun, 05 Jan 2025 09:25:20 +0100,
Mika Westerberg wrote:
>
> Hi,
>
> On Fri, Jan 03, 2025 at 04:53:15PM -0600, Bjorn Helgaas wrote:
> > On Thu, Jan 02, 2025 at 05:43:13PM +0100, Takashi Iwai wrote:
> > > There is yet another PCI entry for Intel Raptor Lake-P that shows the
> > > error "DPC: RP PIO log size 0 is invalid":
> > > 0000:00:07.0 PCI bridge [0604]: Intel Corporation Raptor Lake-P Thunderbolt 4 PCI Express Root Port #0 [8086:a76e]
> > > 0000:00:07.2 PCI bridge [0604]: Intel Corporation Raptor Lake-P Thunderbolt 4 PCI Express Root Port #2 [8086:a72f]
> > >
> > > Add the corresponding quirk entry for 8086:a72f.
> > >
> > > Note that the one for 8086:a76e has been already added by the commit
> > > 627c6db20703 ("PCI/DPC: Quirk PIO log size for Intel Raptor Lake Root
> > > Ports").
> >
> > Intel folks, what's the long-term resolution of this? I'm kind of
> > tired of adding quirks like this. So far we have these (not including
> > the current patch), dating back to Aug 2022:
> >
> > 627c6db20703 ("PCI/DPC: Quirk PIO log size for Intel Raptor Lake Root Ports")
> > 3b8803494a06 ("PCI/DPC: Quirk PIO log size for Intel Ice Lake Root Ports")
> > 5459c0b70467 ("PCI/DPC: Quirk PIO log size for certain Intel Root Ports")
> >
> > I *thought* this problem was caused by BIOS defects that were supposed
> > to be fixed, but nothing seems to be happening.
>
> As far as I know it should be fixed already. I just checked my MTLP and PTL
> systems (both with integrated TBT PCIe root ports) and I don't see the
> message anymore. I don't have RPL system though. This is on reference
> hardware and BIOS so it is possible that the fix has not been taken into
> the OEM BIOS.
The reporter verified that the issue persists with the latest BIOS.
Sigh.
Takashi
