5 * PCI Bus and Bridge datastructures.
7 * Do not access the following members directly;
8 * use accessor functions in pci.h, pci_bridge.h
11 typedef struct PCIBusClass
{
13 BusClass parent_class
;
16 bool (*is_root
)(PCIBus
*bus
);
17 int (*bus_num
)(PCIBus
*bus
);
18 uint16_t (*numa_node
)(PCIBus
*bus
);
23 PCIIOMMUFunc iommu_fn
;
26 pci_set_irq_fn set_irq
;
27 pci_map_irq_fn map_irq
;
28 pci_route_irq_fn route_intx_to_irq
;
30 PCIDevice
*devices
[PCI_SLOT_MAX
* PCI_FUNC_MAX
];
31 PCIDevice
*parent_dev
;
32 MemoryRegion
*address_space_mem
;
33 MemoryRegion
*address_space_io
;
35 QLIST_HEAD(, PCIBus
) child
; /* this will be replaced by qdev later */
36 QLIST_ENTRY(PCIBus
) sibling
;/* this will be replaced by qdev later */
38 /* The bus IRQ state is the logical OR of the connected devices.
39 Keep a count of the number of devices with raised IRQs. */
43 Notifier machine_done
;
46 typedef struct PCIBridgeWindows PCIBridgeWindows
;
49 * Aliases for each of the address space windows that the bridge
50 * can forward. Mapped into the bridge's parent's address space,
53 struct PCIBridgeWindows
{
54 MemoryRegion alias_pref_mem
;
55 MemoryRegion alias_mem
;
56 MemoryRegion alias_io
;
58 * When bridge control VGA forwarding is enabled, bridges will
59 * provide positive decode on the PCI VGA defined I/O port and
60 * MMIO ranges. When enabled forwarding is only qualified on the
61 * I/O and memory enable bits in the bridge command register.
63 MemoryRegion alias_vga
[QEMU_PCI_VGA_NUM_REGIONS
];
66 #define TYPE_PCI_BRIDGE "base-pci-bridge"
67 #define PCI_BRIDGE(obj) OBJECT_CHECK(PCIBridge, (obj), TYPE_PCI_BRIDGE)
77 * Memory regions for the bridge's address spaces. These regions are not
78 * directly added to system_memory/system_io or its descendants.
79 * Bridge's secondary bus points to these, so that devices
80 * under the bridge see these regions as its address spaces.
81 * The regions are as large as the entire address space -
82 * they don't take into account any windows.
84 MemoryRegion address_space_mem
;
85 MemoryRegion address_space_io
;
87 PCIBridgeWindows
*windows
;
89 pci_map_irq_fn map_irq
;
93 #endif /* QEMU_PCI_BUS_H */