hw/pci_internals.h

   1 #ifndef QEMU_PCI_INTERNALS_H
   2 #define QEMU_PCI_INTERNALS_H
   3
   4 /*
   5  * This header files is private to pci.c and pci_bridge.c
   6  * So following structures are opaque to others and shouldn't be
   7  * accessed.
   8  *
   9  * For pci-to-pci bridge needs to include this header file to embed
  10  * PCIBridge in its structure or to get sizeof(PCIBridge),
  11  * However, they shouldn't access those following members directly.
  12  * Use accessor function in pci.h, pci_bridge.h
  13  */
  14
  15 extern struct BusInfo pci_bus_info;
  16
  17 struct PCIBus {
  18     BusState qbus;
  19     uint8_t devfn_min;
  20     pci_set_irq_fn set_irq;
  21     pci_map_irq_fn map_irq;
  22     pci_hotplug_fn hotplug;
  23     DeviceState *hotplug_qdev;
  24     void *irq_opaque;
  25     PCIDevice *devices[PCI_SLOT_MAX * PCI_FUNC_MAX];
  26     PCIDevice *parent_dev;
  27     MemoryRegion *address_space_mem;
  28     MemoryRegion *address_space_io;
  29
  30     QLIST_HEAD(, PCIBus) child; /* this will be replaced by qdev later */
  31     QLIST_ENTRY(PCIBus) sibling;/* this will be replaced by qdev later */
  32
  33     /* The bus IRQ state is the logical OR of the connected devices.
  34        Keep a count of the number of devices with raised IRQs.  */
  35     int nirq;
  36     int *irq_count;
  37 };
  38
  39 struct PCIBridge {
  40     PCIDevice dev;
  41
  42     /* private member */
  43     PCIBus sec_bus;
  44     /*
  45      * Memory regions for the bridge's address spaces.  These regions are not
  46      * directly added to system_memory/system_io or its descendants.
  47      * Bridge's secondary bus points to these, so that devices
  48      * under the bridge see these regions as its address spaces.
  49      * The regions are as large as the entire address space -
  50      * they don't take into account any windows.
  51      */
  52     MemoryRegion address_space_mem;
  53     MemoryRegion address_space_io;
  54     /*
  55      * Aliases for each of the address space windows that the bridge
  56      * can forward. Mapped into the bridge's parent's address space,
  57      * as subregions.
  58      */
  59     MemoryRegion alias_pref_mem;
  60     MemoryRegion alias_mem;
  61     MemoryRegion alias_io;
  62     pci_map_irq_fn map_irq;
  63     const char *bus_name;
  64 };
  65
  66 #endif /* QEMU_PCI_INTERNALS_H */