@@ -1642,6 +1642,28 @@ static void spapr_phb_unrealize(DeviceState *dev, Error **errp)
memory_region_del_subregion(get_system_memory(), &sphb->mem32window);
}
+static bool spapr_phb_allows_extended_config_space(PCIBus *bus)
+{
+ SpaprPhbState *sphb = SPAPR_PCI_HOST_BRIDGE(BUS(bus)->parent);
+
+ return sphb->pcie_ecs;
+}
+
+static void spapr_phb_root_bus_class_init(ObjectClass *klass, void *data)
+{
+ PCIBusClass *pbc = PCI_BUS_CLASS(klass);
+
+ pbc->allows_extended_config_space = spapr_phb_allows_extended_config_space;
+}
+
+#define TYPE_SPAPR_PHB_ROOT_BUS "spapr-pci-host-bridge-root-bus"
+
+static const TypeInfo spapr_phb_root_bus_info = {
+ .name = TYPE_SPAPR_PHB_ROOT_BUS,
+ .parent = TYPE_PCI_BUS,
+ .class_init = spapr_phb_root_bus_class_init,
+};
+
static void spapr_phb_realize(DeviceState *dev, Error **errp)
{
/* We don't use SPAPR_MACHINE() in order to exit gracefully if the user
@@ -1746,7 +1768,8 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp)
bus = pci_register_root_bus(dev, NULL,
pci_spapr_set_irq, pci_spapr_map_irq, sphb,
&sphb->memspace, &sphb->iospace,
- PCI_DEVFN(0, 0), PCI_NUM_PINS, TYPE_PCI_BUS);
+ PCI_DEVFN(0, 0), PCI_NUM_PINS,
+ TYPE_SPAPR_PHB_ROOT_BUS);
phb->bus = bus;
qbus_set_hotplug_handler(BUS(phb->bus), OBJECT(sphb), NULL);
@@ -2344,6 +2367,7 @@ void spapr_pci_rtas_init(void)
static void spapr_pci_register_types(void)
{
type_register_static(&spapr_phb_info);
+ type_register_static(&spapr_phb_root_bus_info);
}
type_init(spapr_pci_register_types)
The PAPR PHB acts as a legacy PCI bus but it allows PCIe extended config space accesses anyway (for pseries-2.9 and newer machine types). Introduce a specific PCI bus subtype to inform the common PCI code about that. Fixes: c2077e2ca0da7 Signed-off-by: Greg Kurz <groug@kaod.org> --- hw/ppc/spapr_pci.c | 26 +++++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-)