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
   8#define QDEV_MAX_MMIO 32
   9#define QDEV_MAX_IRQ 256
  10
  11typedef struct SysBusDevice SysBusDevice;
  12typedef void (*mmio_mapfunc)(SysBusDevice *dev, target_phys_addr_t addr);
  13
  14struct SysBusDevice {
  15    DeviceState qdev;
  16    int num_irq;
  17    qemu_irq irqs[QDEV_MAX_IRQ];
  18    qemu_irq *irqp[QDEV_MAX_IRQ];
  19    int num_mmio;
  20    struct {
  21        target_phys_addr_t addr;
  22        target_phys_addr_t size;
  23        mmio_mapfunc cb;
  24        int iofunc;
  25    } mmio[QDEV_MAX_MMIO];
  26};
  27
  28typedef int (*sysbus_initfn)(SysBusDevice *dev);
  29
  30/* Macros to compensate for lack of type inheritance in C.  */
  31#define sysbus_from_qdev(dev) ((SysBusDevice *)(dev))
  32#define FROM_SYSBUS(type, dev) DO_UPCAST(type, busdev, dev)
  33
  34typedef struct {
  35    DeviceInfo qdev;
  36    sysbus_initfn init;
  37} SysBusDeviceInfo;
  38
  39void sysbus_register_dev(const char *name, size_t size, sysbus_initfn init);
  40void sysbus_register_withprop(SysBusDeviceInfo *info);
  41void *sysbus_new(void);
  42void sysbus_init_mmio(SysBusDevice *dev, target_phys_addr_t size, int iofunc);
  43void sysbus_init_mmio_cb(SysBusDevice *dev, target_phys_addr_t size,
  44                            mmio_mapfunc cb);
  45void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p);
  46void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target);
  47
  48
  49void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq);
  50void sysbus_mmio_map(SysBusDevice *dev, int n, target_phys_addr_t addr);
  51
  52/* Legacy helper function for creating devices.  */
  53DeviceState *sysbus_create_varargs(const char *name,
  54                                 target_phys_addr_t addr, ...);
  55static inline DeviceState *sysbus_create_simple(const char *name,
  56                                              target_phys_addr_t addr,
  57                                              qemu_irq irq)
  58{
  59    return sysbus_create_varargs(name, addr, irq, NULL);
  60}
  61
  62#endif /* !HW_SYSBUS_H */
  63