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
  11 typedef struct SysBusDevice SysBusDevice;
  12 typedef void (*mmio_mapfunc)(SysBusDevice *dev, target_phys_addr_t addr);
  13
  14 struct 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         ram_addr_t iofunc;
  25     } mmio[QDEV_MAX_MMIO];
  26 };
  27
  28 typedef 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
  34 typedef struct {
  35     DeviceInfo qdev;
  36     sysbus_initfn init;
  37 } SysBusDeviceInfo;
  38
  39 void sysbus_register_dev(const char *name, size_t size, sysbus_initfn init);
  40 void sysbus_register_withprop(SysBusDeviceInfo *info);
  41 void *sysbus_new(void);
  42 void sysbus_init_mmio(SysBusDevice *dev, target_phys_addr_t size,
  43                       ram_addr_t iofunc);
  44 void sysbus_init_mmio_cb(SysBusDevice *dev, target_phys_addr_t size,
  45                             mmio_mapfunc cb);
  46 void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p);
  47 void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target);
  48
  49
  50 void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq);
  51 void sysbus_mmio_map(SysBusDevice *dev, int n, target_phys_addr_t addr);
  52
  53 /* Legacy helper function for creating devices.  */
  54 DeviceState *sysbus_create_varargs(const char *name,
  55                                  target_phys_addr_t addr, ...);
  56 static inline DeviceState *sysbus_create_simple(const char *name,
  57                                               target_phys_addr_t addr,
  58                                               qemu_irq irq)
  59 {
  60     return sysbus_create_varargs(name, addr, irq, NULL);
  61 }
  62
  63 #endif /* !HW_SYSBUS_H */