[+cc Joerg, Suravee] On Fri, Jul 15, 2022 at 02:21:17PM +0000, bugzilla-daemon@xxxxxxxxxx wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=216252 > > Bug ID: 216252 > Summary: AMD APU IOMMU: pci 0000:00:00.2: can't derive routing > for PCI INT A > Product: Platform Specific/Hardware > Version: 2.5 > Kernel Version: 5.18.5 > Hardware: AMD > Priority: P1 > Assignee: platform_x86_64@xxxxxxxxxxxxxxxxxxxx > Reporter: kh.bugreport@xxxxxxxxxxx > CC: adm@xxxxxxxxxx, bjorn@xxxxxxxxxxx, > bugzilla.kernel.org@xxxxxx, > drivers_pci@xxxxxxxxxxxxxxxxxxxx, hxss@xxxxx, > josh.mcd31@xxxxxxxxx, kh.bugreport@xxxxxxxxxxx, > marcel@xxxxxxxxxxxx, snafu109@xxxxxxxxx, > whenov@xxxxxxxxx > Regression: No > > Created attachment 301439 > --> https://bugzilla.kernel.org/attachment.cgi?id=301439&action=edit > acpidump from ASRock B450M Pro4-F R2.0 > > +++ This bug was initially created as a clone of Bug #212261 +++ > > Bug 212261 - pci 0000:00:00.2: can't derive routing for PCI INT A > https://bugzilla.kernel.org/show_bug.cgi?id=212261 > > > Crossposting from drivers/pci to Platform Specific/Hardware/x86-64 with AMD > hardware specificy. > > AMD IOMMU IRQ routing problems. > > [ 0.273902] pci 0000:00:00.2: AMD-Vi: IOMMU performance counters supported > [ 0.273932] pci 0000:00:00.2: can't derive routing for PCI INT A > [ 0.273933] pci 0000:00:00.2: PCI INT A: not connected > > Common to AMD reference ACPI / firmware / AGESA for Zen APUs? > At least Raven Ridge (desktop) and Renoir (both desktop and laptop). > > Personally tested with AMD 2200G and 4650G with Asus and ASRock B450 > motherboards. My guess is a BIOS bug, maybe missing _PRT entries. Added a couple AMD IOMMU folks in case they've seen this or have BIOS contacts who could help.
