LXR qemu/hw/sysbus.h

   1#ifndef HW_SYSBUS_H
   2#define HW_SYSBUS_H 1
   3
   4/* Devices attached directly to the main system bus.  */
   5
   6#include "qdev.h"
   7#include "memory.h"
   8
   9#define QDEV_MAX_MMIO 32
  10#define QDEV_MAX_PIO 32
  11#define QDEV_MAX_IRQ 512
  12
  13#define TYPE_SYSTEM_BUS "System"
  14#define SYSTEM_BUS(obj) OBJECT_CHECK(IDEBus, (obj), TYPE_IDE_BUS)
  15
  16typedef struct SysBusDevice SysBusDevice;
  17
  18#define TYPE_SYS_BUS_DEVICE "sys-bus-device"
  19#define SYS_BUS_DEVICE(obj) \
  20     OBJECT_CHECK(SysBusDevice, (obj), TYPE_SYS_BUS_DEVICE)
  21#define SYS_BUS_DEVICE_CLASS(klass) \
  22     OBJECT_CLASS_CHECK(SysBusDeviceClass, (klass), TYPE_SYS_BUS_DEVICE)
  23#define SYS_BUS_DEVICE_GET_CLASS(obj) \
  24     OBJECT_GET_CLASS(SysBusDeviceClass, (obj), TYPE_SYS_BUS_DEVICE)
  25
  26typedef struct SysBusDeviceClass {
  27    DeviceClass parent_class;
  28
  29    int (*init)(SysBusDevice *dev);
  30} SysBusDeviceClass;
  31
  32struct SysBusDevice {
  33    DeviceState qdev;
  34    int num_irq;
  35    qemu_irq irqs[QDEV_MAX_IRQ];
  36    qemu_irq *irqp[QDEV_MAX_IRQ];
  37    int num_mmio;
  38    struct {
  39        hwaddr addr;
  40        MemoryRegion *memory;
  41    } mmio[QDEV_MAX_MMIO];
  42    int num_pio;
  43    pio_addr_t pio[QDEV_MAX_PIO];
  44};
  45
  46/* Macros to compensate for lack of type inheritance in C.  */
  47#define sysbus_from_qdev(dev) ((SysBusDevice *)(dev))
  48#define FROM_SYSBUS(type, dev) DO_UPCAST(type, busdev, dev)
  49
  50void *sysbus_new(void);
  51void sysbus_init_mmio(SysBusDevice *dev, MemoryRegion *memory);
  52MemoryRegion *sysbus_mmio_get_region(SysBusDevice *dev, int n);
  53void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p);
  54void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target);
  55void sysbus_init_ioports(SysBusDevice *dev, pio_addr_t ioport, pio_addr_t size);
  56
  57
  58void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq);
  59void sysbus_mmio_map(SysBusDevice *dev, int n, hwaddr addr);
  60void sysbus_add_memory(SysBusDevice *dev, hwaddr addr,
  61                       MemoryRegion *mem);
  62void sysbus_add_memory_overlap(SysBusDevice *dev, hwaddr addr,
  63                               MemoryRegion *mem, unsigned priority);
  64void sysbus_del_memory(SysBusDevice *dev, MemoryRegion *mem);
  65void sysbus_add_io(SysBusDevice *dev, hwaddr addr,
  66                   MemoryRegion *mem);
  67void sysbus_del_io(SysBusDevice *dev, MemoryRegion *mem);
  68MemoryRegion *sysbus_address_space(SysBusDevice *dev);
  69
  70/* Legacy helper function for creating devices.  */
  71DeviceState *sysbus_create_varargs(const char *name,
  72                                 hwaddr addr, ...);
  73DeviceState *sysbus_try_create_varargs(const char *name,
  74                                       hwaddr addr, ...);
  75static inline DeviceState *sysbus_create_simple(const char *name,
  76                                              hwaddr addr,
  77                                              qemu_irq irq)
  78{
  79    return sysbus_create_varargs(name, addr, irq, NULL);
  80}
  81
  82static inline DeviceState *sysbus_try_create_simple(const char *name,
  83                                                    hwaddr addr,
  84                                                    qemu_irq irq)
  85{
  86    return sysbus_try_create_varargs(name, addr, irq, NULL);
  87}
  88
  89#endif /* !HW_SYSBUS_H */
  90