1#ifndef HW_SYSBUS_H
2#define HW_SYSBUS_H 1
3
4/* Devices attached directly to the main system bus.  */
5
6#include "exec/hwaddr.h"
7#include "hw/qdev.h"
8
9#define QDEV_MAX_MMIO 5
10#define QDEV_MAX_IRQ 32
11
12typedef struct SysBusDevice SysBusDevice;
13typedef void (*mmio_mapfunc)(SysBusDevice *dev, hwaddr addr);
14
15struct SysBusDevice {
16    DeviceState qdev;
17    int num_irq;
18    qemu_irq irqs[QDEV_MAX_IRQ];
19    qemu_irq *irqp[QDEV_MAX_IRQ];
20    int num_mmio;
21    struct {
22        hwaddr addr;
23        hwaddr size;
24        mmio_mapfunc cb;
25        int iofunc;
26    } mmio[QDEV_MAX_MMIO];
27};
28
29typedef void (*sysbus_initfn)(SysBusDevice *dev);
30
31/* Macros to compensate for lack of type inheritance in C.  */
32#define sysbus_from_qdev(dev) ((SysBusDevice *)(dev))
33#define FROM_SYSBUS(type, dev) DO_UPCAST(type, busdev, dev)
34
35typedef struct {
36    DeviceInfo qdev;
37    sysbus_initfn init;
38} SysBusDeviceInfo;
39
40void sysbus_register_dev(const char *name, size_t size, sysbus_initfn init);
41void sysbus_register_withprop(SysBusDeviceInfo *info);
42void *sysbus_new(void);
43void sysbus_init_mmio(SysBusDevice *dev, hwaddr size, int iofunc);
44void sysbus_init_mmio_cb(SysBusDevice *dev, hwaddr size,
45                            mmio_mapfunc cb);
46void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p);
47void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target);
48
49
50void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq);
51void sysbus_mmio_map(SysBusDevice *dev, int n, hwaddr addr);
52
53/* Legacy helper function for creating devices.  */
54DeviceState *sysbus_create_varargs(const char *name,
55                                 hwaddr addr, ...);
56static inline DeviceState *sysbus_create_simple(const char *name,
57                                              hwaddr addr,
58                                              qemu_irq irq)
59{
60    return sysbus_create_varargs(name, addr, irq, NULL);
61}
62
63#endif /* !HW_SYSBUS_H */
64