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 #include "exec/memory.h"
   8
   9 #define QDEV_MAX_MMIO 32
  10 #define QDEV_MAX_PIO 32
  11 #define QDEV_MAX_IRQ 512
  12
  13 #define TYPE_SYSTEM_BUS "System"
  14 #define SYSTEM_BUS(obj) OBJECT_CHECK(IDEBus, (obj), TYPE_IDE_BUS)
  15
  16 typedef struct SysBusDevice SysBusDevice;
  17
  18 #define TYPE_SYS_BUS_DEVICE "sys-bus-device"
  19 #define SYS_BUS_DEVICE(obj) \
  20      OBJECT_CHECK(SysBusDevice, (obj), TYPE_SYS_BUS_DEVICE)
  21 #define SYS_BUS_DEVICE_CLASS(klass) \
  22      OBJECT_CLASS_CHECK(SysBusDeviceClass, (klass), TYPE_SYS_BUS_DEVICE)
  23 #define SYS_BUS_DEVICE_GET_CLASS(obj) \
  24      OBJECT_GET_CLASS(SysBusDeviceClass, (obj), TYPE_SYS_BUS_DEVICE)
  25
  26 typedef struct SysBusDeviceClass {
  27     DeviceClass parent_class;
  28
  29     int (*init)(SysBusDevice *dev);
  30 } SysBusDeviceClass;
  31
  32 struct SysBusDevice {
  33     DeviceState qdev;
  34     int num_irq;
  35     qemu_irq irqs[QDEV_MAX_IRQ];
  36     qemu_irq *irqp[QDEV_MAX_IRQ];
  37     int num_mmio;
  38     struct {
  39         hwaddr addr;
  40         MemoryRegion *memory;
  41     } mmio[QDEV_MAX_MMIO];
  42     int num_pio;
  43     pio_addr_t pio[QDEV_MAX_PIO];
  44 };
  45
  46 /* Macros to compensate for lack of type inheritance in C.  */
  47 #define FROM_SYSBUS(type, dev) DO_UPCAST(type, busdev, dev)
  48
  49 void *sysbus_new(void);
  50 void sysbus_init_mmio(SysBusDevice *dev, MemoryRegion *memory);
  51 MemoryRegion *sysbus_mmio_get_region(SysBusDevice *dev, int n);
  52 void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p);
  53 void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target);
  54 void sysbus_init_ioports(SysBusDevice *dev, pio_addr_t ioport, pio_addr_t size);
  55
  56
  57 void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq);
  58 void sysbus_mmio_map(SysBusDevice *dev, int n, hwaddr addr);
  59 void sysbus_add_memory(SysBusDevice *dev, hwaddr addr,
  60                        MemoryRegion *mem);
  61 void sysbus_add_memory_overlap(SysBusDevice *dev, hwaddr addr,
  62                                MemoryRegion *mem, unsigned priority);
  63 void sysbus_del_memory(SysBusDevice *dev, MemoryRegion *mem);
  64 void sysbus_add_io(SysBusDevice *dev, hwaddr addr,
  65                    MemoryRegion *mem);
  66 void sysbus_del_io(SysBusDevice *dev, MemoryRegion *mem);
  67 MemoryRegion *sysbus_address_space(SysBusDevice *dev);
  68
  69 /* Legacy helper function for creating devices.  */
  70 DeviceState *sysbus_create_varargs(const char *name,
  71                                  hwaddr addr, ...);
  72 DeviceState *sysbus_try_create_varargs(const char *name,
  73                                        hwaddr addr, ...);
  74 static inline DeviceState *sysbus_create_simple(const char *name,
  75                                               hwaddr addr,
  76                                               qemu_irq irq)
  77 {
  78     return sysbus_create_varargs(name, addr, irq, NULL);
  79 }
  80
  81 static inline DeviceState *sysbus_try_create_simple(const char *name,
  82                                                     hwaddr addr,
  83                                                     qemu_irq irq)
  84 {
  85     return sysbus_try_create_varargs(name, addr, irq, NULL);
  86 }
  87
  88 #endif /* !HW_SYSBUS_H */