Hi all,
Sorry for the delay. I was busy with other stuff recently. I like it, just please note that ACPI requires to aggregate the _PRT objects under every PCI bridge device.
The root bridge has to have _PRT table (usually it contains routing for BUS 0). The other bridges (_PCI devices) contains aggregate _PRT routing entries for bus directly behind the bridge.
Plz check src/mainboard/asus/m2v-mx_se/dsdt.asl for details.
Thanks Rudolf