HTB(4) Device Drivers Manual (loongson) HTB(4)

htb — PCI host bridge

htb* at mainbus0
pci* at htb?

The htb driver provides support for the pci(4) bus on Loongson 3A systems.

mainbus(4), pci(4)

The htb driver first appeared in OpenBSD 6.1.

Add-on cards with a PCI bridge might not be fully functional because the system firmware does not provide complete interrupt routing information.

OpenBSD 7.8 November 20, 2016 HTB(4)