1 #ifndef QEMU_PCI_BUS_H 2 #define QEMU_PCI_BUS_H 3 4 #include "hw/pci/pci.h" 5 6 /* 7 * PCI Bus datastructures. 8 * 9 * Do not access the following members directly; 10 * use accessor functions in pci.h 11 */ 12 13 typedef struct PCIBusClass { 14 /*< private >*/ 15 BusClass parent_class; 16 /*< public >*/ 17 18 int (*bus_num)(PCIBus *bus); 19 uint16_t (*numa_node)(PCIBus *bus); 20 } PCIBusClass; 21 22 enum PCIBusFlags { 23 /* This bus is the root of a PCI domain */ 24 PCI_BUS_IS_ROOT = 0x0001, 25 /* PCIe extended configuration space is accessible on this bus */ 26 PCI_BUS_EXTENDED_CONFIG_SPACE = 0x0002, 27 }; 28 29 struct PCIBus { 30 BusState qbus; 31 enum PCIBusFlags flags; 32 PCIIOMMUFunc iommu_fn; 33 void *iommu_opaque; 34 uint8_t devfn_min; 35 uint32_t slot_reserved_mask; 36 pci_set_irq_fn set_irq; 37 pci_map_irq_fn map_irq; 38 pci_route_irq_fn route_intx_to_irq; 39 void *irq_opaque; 40 PCIDevice *devices[PCI_SLOT_MAX * PCI_FUNC_MAX]; 41 PCIDevice *parent_dev; 42 MemoryRegion *address_space_mem; 43 MemoryRegion *address_space_io; 44 45 QLIST_HEAD(, PCIBus) child; /* this will be replaced by qdev later */ 46 QLIST_ENTRY(PCIBus) sibling;/* this will be replaced by qdev later */ 47 48 /* The bus IRQ state is the logical OR of the connected devices. 49 Keep a count of the number of devices with raised IRQs. */ 50 int nirq; 51 int *irq_count; 52 53 Notifier machine_done; 54 }; 55 56 static inline bool pci_bus_is_root(PCIBus *bus) 57 { 58 return !!(bus->flags & PCI_BUS_IS_ROOT); 59 } 60 61 static inline bool pci_bus_allows_extended_config_space(PCIBus *bus) 62 { 63 return !!(bus->flags & PCI_BUS_EXTENDED_CONFIG_SPACE); 64 } 65 66 #endif /* QEMU_PCI_BUS_H */ 67