Here is the new output:
before scan bus of PCI: 00:18.0amdk8_scan_chains: PCI: 00:18.0, node 0ht_collapse_early_enumeration: PCI: 00:18.0 children PCI: 00:18.0 offset_unitid0
amdk8_scan_chains: PCI: 00:18.0, node 0, link 0
amdk8_scan_chain: PCI: 00:18.0, node 0, link 0
connected
Init Complete
non coherent
scan chain
ht_collapse_early_enumeration: ctrl = 20