Christoph Egger wrote: > Michael Lorenz wrote: > > > +/* > > + * NetBSD's userland has a /dev/pci* entry for each bus but userland has > > no way > > + * to tell if a bus is a subordinate of another one or if it's on a > > different > > + * host bridge. > > I have a patch which introduces support for PCI domains. It allows the > userland to distinguish between them by checking if the pci bus belongs > to the same PCI domain.
What exactly is a "PCI domain"? A quick google seems to suggest that this is a Linux concept as opposed to a PCI concept. In a previous life we used NetBSD on a number of different machines of various architectures that had multiple PCI host bridges, although admittedly we didn't need to know the topology of the PCI bus layout. Cheers, Simon.
