LXR qemu/include/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 "hw/qdev.h"
   7#include "exec/memory.h"
   8
   9#define QDEV_MAX_MMIO 32
  10#define QDEV_MAX_PIO 32
  11
  12#define TYPE_SYSTEM_BUS "System"
  13#define SYSTEM_BUS(obj) OBJECT_CHECK(BusState, (obj), TYPE_SYSTEM_BUS)
  14
  15typedef struct SysBusDevice SysBusDevice;
  16
  17#define TYPE_SYS_BUS_DEVICE "sys-bus-device"
  18#define SYS_BUS_DEVICE(obj) \
  19     OBJECT_CHECK(SysBusDevice, (obj), TYPE_SYS_BUS_DEVICE)
  20#define SYS_BUS_DEVICE_CLASS(klass) \
  21     OBJECT_CLASS_CHECK(SysBusDeviceClass, (klass), TYPE_SYS_BUS_DEVICE)
  22#define SYS_BUS_DEVICE_GET_CLASS(obj) \
  23     OBJECT_GET_CLASS(SysBusDeviceClass, (obj), TYPE_SYS_BUS_DEVICE)
  24
  25/**
  26 * SysBusDeviceClass:
  27 * @init: Callback function invoked when the #DeviceState.realized property
  28 * is changed to %true. Deprecated, new types inheriting directly from
  29 * TYPE_SYS_BUS_DEVICE should use #DeviceClass.realize instead, new leaf
  30 * types should consult their respective parent type.
  31 *
  32 * SysBusDeviceClass is not overriding #DeviceClass.realize, so derived
  33 * classes overriding it are not required to invoke its implementation.
  34 */
  35
  36#define SYSBUS_DEVICE_GPIO_IRQ "sysbus-irq"
  37
  38typedef struct SysBusDeviceClass {
  39    /*< private >*/
  40    DeviceClass parent_class;
  41    /*< public >*/
  42
  43    int (*init)(SysBusDevice *dev);
  44} SysBusDeviceClass;
  45
  46struct SysBusDevice {
  47    /*< private >*/
  48    DeviceState parent_obj;
  49    /*< public >*/
  50
  51    int num_mmio;
  52    struct {
  53        hwaddr addr;
  54        MemoryRegion *memory;
  55    } mmio[QDEV_MAX_MMIO];
  56    int num_pio;
  57    pio_addr_t pio[QDEV_MAX_PIO];
  58};
  59
  60typedef int FindSysbusDeviceFunc(SysBusDevice *sbdev, void *opaque);
  61
  62void sysbus_init_mmio(SysBusDevice *dev, MemoryRegion *memory);
  63MemoryRegion *sysbus_mmio_get_region(SysBusDevice *dev, int n);
  64void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p);
  65void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target);
  66void sysbus_init_ioports(SysBusDevice *dev, pio_addr_t ioport, pio_addr_t size);
  67
  68
  69bool sysbus_has_irq(SysBusDevice *dev, int n);
  70bool sysbus_has_mmio(SysBusDevice *dev, unsigned int n);
  71void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq);
  72bool sysbus_is_irq_connected(SysBusDevice *dev, int n);
  73qemu_irq sysbus_get_connected_irq(SysBusDevice *dev, int n);
  74void sysbus_mmio_map(SysBusDevice *dev, int n, hwaddr addr);
  75void sysbus_mmio_map_overlap(SysBusDevice *dev, int n, hwaddr addr,
  76                             int priority);
  77void sysbus_add_io(SysBusDevice *dev, hwaddr addr,
  78                   MemoryRegion *mem);
  79MemoryRegion *sysbus_address_space(SysBusDevice *dev);
  80
  81/* Call func for every dynamically created sysbus device in the system */
  82void foreach_dynamic_sysbus_device(FindSysbusDeviceFunc *func, void *opaque);
  83
  84/* Legacy helper function for creating devices.  */
  85DeviceState *sysbus_create_varargs(const char *name,
  86                                 hwaddr addr, ...);
  87DeviceState *sysbus_try_create_varargs(const char *name,
  88                                       hwaddr addr, ...);
  89static inline DeviceState *sysbus_create_simple(const char *name,
  90                                              hwaddr addr,
  91                                              qemu_irq irq)
  92{
  93    return sysbus_create_varargs(name, addr, irq, NULL);
  94}
  95
  96static inline DeviceState *sysbus_try_create_simple(const char *name,
  97                                                    hwaddr addr,
  98                                                    qemu_irq irq)
  99{
 100    return sysbus_try_create_varargs(name, addr, irq, NULL);
 101}
 102
 103#endif /* !HW_SYSBUS_H */
 104