tree cbcac90f92ece38543f90282628eba5e313e26a0
parent 8cb14becbc15f19944a3b0f04c8dcfa44c554e3b
author Felix Held <felix-coreboot@felixheld.de> 1691523523 +0200
committer Felix Held <felix-coreboot@felixheld.de> 1691764778 +0000

soc/amd/common/data_fabric/domain: set and use max_subordinate

Set the maximum subordinate bus number of the domain to the last PCI bus
number that is decoded to this PCI root. This makes sure that the
resource allocator knows the maximum number of PCI buses on this PCI
root to not assign bus numbers to buses below this PCI root that aren't
routed to that PCI root.

Now that we have this info in the link list structure or the domain
device, we can pass the max_subordinate field to the
acpigen_resource_producer_bus_number call and can leave the subordinate
number after pci_domain_scan_bus is done unchanged instead of setting it
to the limit.

TEST=On Mandolin both the bus resource producer in _SB\PCI0\_CRS and the
PCI bus number allocation remain unchanged.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I2ee75b2a7054a306b0c7d98c5357391c029187bb
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77112
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>