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_PIO 32
  10 #define QDEV_MAX_IRQ 256
  11
  12 typedef struct SysBusDevice SysBusDevice;
  13 typedef void (*mmio_mapfunc)(SysBusDevice *dev, target_phys_addr_t addr);
  14
  15 struct 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         target_phys_addr_t addr;
  23         target_phys_addr_t size;
  24         mmio_mapfunc cb;
  25         ram_addr_t iofunc;
  26     } mmio[QDEV_MAX_MMIO];
  27     int num_pio;
  28     pio_addr_t pio[QDEV_MAX_PIO];
  29 };
  30
  31 typedef int (*sysbus_initfn)(SysBusDevice *dev);
  32
  33 /* Macros to compensate for lack of type inheritance in C.  */
  34 #define sysbus_from_qdev(dev) ((SysBusDevice *)(dev))
  35 #define FROM_SYSBUS(type, dev) DO_UPCAST(type, busdev, dev)
  36
  37 typedef struct {
  38     DeviceInfo qdev;
  39     sysbus_initfn init;
  40 } SysBusDeviceInfo;
  41
  42 void sysbus_register_dev(const char *name, size_t size, sysbus_initfn init);
  43 void sysbus_register_withprop(SysBusDeviceInfo *info);
  44 void *sysbus_new(void);
  45 void sysbus_init_mmio(SysBusDevice *dev, target_phys_addr_t size,
  46                       ram_addr_t iofunc);
  47 void sysbus_init_mmio_cb(SysBusDevice *dev, target_phys_addr_t size,
  48                             mmio_mapfunc cb);
  49 void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p);
  50 void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target);
  51 void sysbus_init_ioports(SysBusDevice *dev, pio_addr_t ioport, pio_addr_t size);
  52
  53
  54 void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq);
  55 void sysbus_mmio_map(SysBusDevice *dev, int n, target_phys_addr_t addr);
  56
  57 /* Legacy helper function for creating devices.  */
  58 DeviceState *sysbus_create_varargs(const char *name,
  59                                  target_phys_addr_t addr, ...);
  60 DeviceState *sysbus_try_create_varargs(const char *name,
  61                                        target_phys_addr_t addr, ...);
  62 static inline DeviceState *sysbus_create_simple(const char *name,
  63                                               target_phys_addr_t addr,
  64                                               qemu_irq irq)
  65 {
  66     return sysbus_create_varargs(name, addr, irq, NULL);
  67 }
  68
  69 static inline DeviceState *sysbus_try_create_simple(const char *name,
  70                                                     target_phys_addr_t addr,
  71                                                     qemu_irq irq)
  72 {
  73     return sysbus_try_create_varargs(name, addr, irq, NULL);
  74 }
  75
  76 #endif /* !HW_SYSBUS_H */