Merge remote-tracking branch 'remotes/bsdimp/tags/pull-bsd-user-20211018-pull-request...
[qemu.git] / include / hw / pci / pci_bus.h
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 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 };
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 */