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
  12 #define TYPE_SYSTEM_BUS "System"
  13 #define SYSTEM_BUS(obj) OBJECT_CHECK(BusState, (obj), TYPE_SYSTEM_BUS)
  14
  15 typedef struct SysBusDevice SysBusDevice;
  16
  17 #define TYPE_SYS_BUS_DEVICE "sys-bus-device"
  18 #define SYS_BUS_DEVICE(obj) \
  19      OBJECT_CHECK(SysBusDevice, (obj), TYPE_SYS_BUS_DEVICE)
  20 #define SYS_BUS_DEVICE_CLASS(klass) \
  21      OBJECT_CLASS_CHECK(SysBusDeviceClass, (klass), TYPE_SYS_BUS_DEVICE)
  22 #define SYS_BUS_DEVICE_GET_CLASS(obj) \
  23      OBJECT_GET_CLASS(SysBusDeviceClass, (obj), TYPE_SYS_BUS_DEVICE)
  24
  25 /**
  26  * SysBusDeviceClass:
  27  * @init: Callback function invoked when the #DeviceState.realized property
  28  * is changed to %true. Deprecated, new types inheriting directly from
  29  * TYPE_SYS_BUS_DEVICE should use #DeviceClass.realize instead, new leaf
  30  * types should consult their respective parent type.
  31  *
  32  * SysBusDeviceClass is not overriding #DeviceClass.realize, so derived
  33  * classes overriding it are not required to invoke its implementation.
  34  */
  35
  36 #define SYSBUS_DEVICE_GPIO_IRQ "sysbus-irq"
  37
  38 typedef struct SysBusDeviceClass {
  39     /*< private >*/
  40     DeviceClass parent_class;
  41     /*< public >*/
  42
  43     int (*init)(SysBusDevice *dev);
  44 } SysBusDeviceClass;
  45
  46 struct SysBusDevice {
  47     /*< private >*/
  48     DeviceState parent_obj;
  49     /*< public >*/
  50
  51     int num_mmio;
  52     struct {
  53         hwaddr addr;
  54         MemoryRegion *memory;
  55     } mmio[QDEV_MAX_MMIO];
  56     int num_pio;
  57     pio_addr_t pio[QDEV_MAX_PIO];
  58 };
  59
  60 void sysbus_init_mmio(SysBusDevice *dev, MemoryRegion *memory);
  61 MemoryRegion *sysbus_mmio_get_region(SysBusDevice *dev, int n);
  62 void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p);
  63 void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target);
  64 void sysbus_init_ioports(SysBusDevice *dev, pio_addr_t ioport, pio_addr_t size);
  65
  66
  67 void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq);
  68 void sysbus_mmio_map(SysBusDevice *dev, int n, hwaddr addr);
  69 void sysbus_mmio_map_overlap(SysBusDevice *dev, int n, hwaddr addr,
  70                              int priority);
  71 void sysbus_add_io(SysBusDevice *dev, hwaddr addr,
  72                    MemoryRegion *mem);
  73 MemoryRegion *sysbus_address_space(SysBusDevice *dev);
  74
  75 /* Legacy helper function for creating devices.  */
  76 DeviceState *sysbus_create_varargs(const char *name,
  77                                  hwaddr addr, ...);
  78 DeviceState *sysbus_try_create_varargs(const char *name,
  79                                        hwaddr addr, ...);
  80 static inline DeviceState *sysbus_create_simple(const char *name,
  81                                               hwaddr addr,
  82                                               qemu_irq irq)
  83 {
  84     return sysbus_create_varargs(name, addr, irq, NULL);
  85 }
  86
  87 static inline DeviceState *sysbus_try_create_simple(const char *name,
  88                                                     hwaddr addr,
  89                                                     qemu_irq irq)
  90 {
  91     return sysbus_try_create_varargs(name, addr, irq, NULL);
  92 }
  93
  94 #endif /* !HW_SYSBUS_H */