For resource sizing and mapping purposes treat devices on extra root buses as if they are on the default root bus (bus 0).
Signed-off-by: Marcel Apfelbaum marcel@redhat.com --- src/fw/pciinit.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/src/fw/pciinit.c b/src/fw/pciinit.c index a5f6505..c399698 100644 --- a/src/fw/pciinit.c +++ b/src/fw/pciinit.c @@ -58,6 +58,7 @@ struct pci_region { struct pci_bus { struct pci_region r[PCI_REGION_TYPE_COUNT]; struct pci_device *bus_dev; + int res_on_default_bus; };
static u32 pci_bar(struct pci_device *pci, int region_num) @@ -686,6 +687,14 @@ static int pci_bios_check_devices(struct pci_bus *busses) busses[pci->secondary_bus].bus_dev = pci;
struct pci_bus *bus = &busses[pci_bdf_to_bus(pci->bdf)]; + if (!bus->bus_dev && pci_bdf_to_bus(pci->bdf)) { + bus->res_on_default_bus = 1; + /* + * Treat devices on extra root buses as if they + * were on the default root bus (bus 0) + */ + bus = &busses[0]; + } int i; for (i = 0; i < PCI_NUM_REGIONS; i++) { if ((pci->class == PCI_CLASS_BRIDGE_PCI) && @@ -716,6 +725,8 @@ static int pci_bios_check_devices(struct pci_bus *busses) if (!s->bus_dev) continue; struct pci_bus *parent = &busses[pci_bdf_to_bus(s->bus_dev->bdf)]; + if (parent->res_on_default_bus) + parent = &busses[0]; int type; int hotplug_support = pci_bus_hotplug_support(s); for (type = 0; type < PCI_REGION_TYPE_COUNT; type++) {