PPB(4) Device Drivers Manual PPB(4)

ppb — PCI-PCI bridge

ppb* at pci?
pci* at ppb?

The ppb driver supports generic PCI-PCI bridges, including PCI expansion backplanes. These devices are largely transparent and provide no user accessible entry points.

pci(4)

OpenBSD 7.8 June 3, 2015 PPB(4)