On 9 September 2013 13:43, Marcel Apfelbaum <marce...@redhat.com> wrote: > The scenario is covered only for the primary bus and not for buses > behind the PCI bridge (the later being handled differently.) > In this case, isn't the Host Bridge always device 00.0?
No. For instance the host controller may pass a nonzero value of devfn_min to pci_bus_new/pci_register_bus (in which case the host bridge will end up there; example hw/pci-host/versatile.c) or it might just pass a nonzero devfn to pci_create_simple when it creates the host controller PCI device on the bus (I don't think we have anything that does it that way, though). > If not, can we find a way to scan all bus devices and find > the host bridge so we will not have to manually add it to each > host bridge? It would be conceptually nicer not to treat host bridges as a special case but instead to just report the abort back to whatever the PCI master was (which might be a device doing DMA). That might be a lot of effort though. -- PMM
