include/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 "hw/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 /**
  27  * SysBusDeviceClass:
  28  * @init: Callback function invoked when the #DeviceState.realized property
  29  * is changed to %true. Deprecated, new types inheriting directly from
  30  * TYPE_SYS_BUS_DEVICE should use #DeviceClass.realize instead, new leaf
  31  * types should consult their respective parent type.
  32  *
  33  * SysBusDeviceClass is not overriding #DeviceClass.realize, so derived
  34  * classes overriding it are not required to invoke its implementation.
  35  */
  36 typedef struct SysBusDeviceClass {
  37     /*< private >*/
  38     DeviceClass parent_class;
  39     /*< public >*/
  40
  41     int (*init)(SysBusDevice *dev);
  42 } SysBusDeviceClass;
  43
  44 struct SysBusDevice {
  45     DeviceState qdev;
  46     int num_irq;
  47     qemu_irq irqs[QDEV_MAX_IRQ];
  48     qemu_irq *irqp[QDEV_MAX_IRQ];
  49     int num_mmio;
  50     struct {
  51         hwaddr addr;
  52         MemoryRegion *memory;
  53     } mmio[QDEV_MAX_MMIO];
  54     int num_pio;
  55     pio_addr_t pio[QDEV_MAX_PIO];
  56 };
  57
  58 /* Macros to compensate for lack of type inheritance in C.  */
  59 #define FROM_SYSBUS(type, dev) DO_UPCAST(type, busdev, dev)
  60
  61 void *sysbus_new(void);
  62 void sysbus_init_mmio(SysBusDevice *dev, MemoryRegion *memory);
  63 MemoryRegion *sysbus_mmio_get_region(SysBusDevice *dev, int n);
  64 void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p);
  65 void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target);
  66 void sysbus_init_ioports(SysBusDevice *dev, pio_addr_t ioport, pio_addr_t size);
  67
  68
  69 void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq);
  70 void sysbus_mmio_map(SysBusDevice *dev, int n, hwaddr addr);
  71 void sysbus_mmio_map_overlap(SysBusDevice *dev, int n, hwaddr addr,
  72                              unsigned priority);
  73 void sysbus_add_io(SysBusDevice *dev, hwaddr addr,
  74                    MemoryRegion *mem);
  75 void sysbus_del_io(SysBusDevice *dev, MemoryRegion *mem);
  76 MemoryRegion *sysbus_address_space(SysBusDevice *dev);
  77
  78 /* Legacy helper function for creating devices.  */
  79 DeviceState *sysbus_create_varargs(const char *name,
  80                                  hwaddr addr, ...);
  81 DeviceState *sysbus_try_create_varargs(const char *name,
  82                                        hwaddr addr, ...);
  83 static inline DeviceState *sysbus_create_simple(const char *name,
  84                                               hwaddr addr,
  85                                               qemu_irq irq)
  86 {
  87     return sysbus_create_varargs(name, addr, irq, NULL);
  88 }
  89
  90 static inline DeviceState *sysbus_try_create_simple(const char *name,
  91                                                     hwaddr addr,
  92                                                     qemu_irq irq)
  93 {
  94     return sysbus_try_create_varargs(name, addr, irq, NULL);
  95 }
  96
  97 #endif /* !HW_SYSBUS_H */