diff options
| -rw-r--r-- | hw/pci/pci.c | 17 | ||||
| -rw-r--r-- | include/hw/pci/pci.h | 2 | ||||
| -rw-r--r-- | include/hw/pci/pci_bus.h | 8 |
3 files changed, 24 insertions, 3 deletions
diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 48f19a306d..132d19ec2a 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -88,9 +88,15 @@ static void pci_bus_unrealize(BusState *qbus, Error **errp) vmstate_unregister(NULL, &vmstate_pcibus, bus); } +static bool pcibus_is_root(PCIBus *bus) +{ + return !bus->parent_dev; +} + static void pci_bus_class_init(ObjectClass *klass, void *data) { BusClass *k = BUS_CLASS(klass); + PCIBusClass *pbc = PCI_BUS_CLASS(klass); k->print_dev = pcibus_dev_print; k->get_dev_path = pcibus_get_dev_path; @@ -98,12 +104,15 @@ static void pci_bus_class_init(ObjectClass *klass, void *data) k->realize = pci_bus_realize; k->unrealize = pci_bus_unrealize; k->reset = pcibus_reset; + + pbc->is_root = pcibus_is_root; } static const TypeInfo pci_bus_info = { .name = TYPE_PCI_BUS, .parent = TYPE_BUS, .instance_size = sizeof(PCIBus), + .class_size = sizeof(PCIBusClass), .class_init = pci_bus_class_init, }; @@ -278,7 +287,10 @@ PCIBus *pci_device_root_bus(const PCIDevice *d) { PCIBus *bus = d->bus; - while ((d = bus->parent_dev) != NULL) { + while (!pci_bus_is_root(bus)) { + d = bus->parent_dev; + assert(d != NULL); + bus = d->bus; } @@ -291,7 +303,6 @@ const char *pci_root_bus_path(PCIDevice *dev) PCIHostState *host_bridge = PCI_HOST_BRIDGE(rootbus->qbus.parent); PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_GET_CLASS(host_bridge); - assert(!rootbus->parent_dev); assert(host_bridge->bus == rootbus); if (hc->root_bus_path) { @@ -325,7 +336,7 @@ bool pci_bus_is_express(PCIBus *bus) bool pci_bus_is_root(PCIBus *bus) { - return !bus->parent_dev; + return PCI_BUS_GET_CLASS(bus)->is_root(bus); } void pci_bus_new_inplace(PCIBus *bus, size_t bus_size, DeviceState *parent, diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index 5d050c830f..df05c96c2d 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -340,6 +340,8 @@ typedef PCIINTxRoute (*pci_route_irq_fn)(void *opaque, int pin); #define TYPE_PCI_BUS "PCI" #define PCI_BUS(obj) OBJECT_CHECK(PCIBus, (obj), TYPE_PCI_BUS) +#define PCI_BUS_CLASS(klass) OBJECT_CLASS_CHECK(PCIBusClass, (klass), TYPE_PCI_BUS) +#define PCI_BUS_GET_CLASS(obj) OBJECT_GET_CLASS(PCIBusClass, (obj), TYPE_PCI_BUS) #define TYPE_PCIE_BUS "PCIE" bool pci_bus_is_express(PCIBus *bus); diff --git a/include/hw/pci/pci_bus.h b/include/hw/pci/pci_bus.h index fabaeee86b..b5ba9c4a98 100644 --- a/include/hw/pci/pci_bus.h +++ b/include/hw/pci/pci_bus.h @@ -8,6 +8,14 @@ * use accessor functions in pci.h, pci_bridge.h */ +typedef struct PCIBusClass { + /*< private >*/ + BusClass parent_class; + /*< public >*/ + + bool (*is_root)(PCIBus *bus); +} PCIBusClass; + struct PCIBus { BusState qbus; PCIIOMMUFunc iommu_fn; |