4 /* Devices attached directly to the main system bus. */
6 #include "hw/qdev-core.h"
7 #include "exec/memory.h"
9 #define QDEV_MAX_MMIO 32
10 #define QDEV_MAX_PIO 32
12 #define TYPE_SYSTEM_BUS "System"
13 #define SYSTEM_BUS(obj) OBJECT_CHECK(BusState, (obj), TYPE_SYSTEM_BUS)
15 typedef struct SysBusDevice SysBusDevice
;
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)
28 * SysBusDeviceClass is not overriding #DeviceClass.realize, so derived
29 * classes overriding it are not required to invoke its implementation.
32 #define SYSBUS_DEVICE_GPIO_IRQ "sysbus-irq"
34 typedef struct SysBusDeviceClass
{
36 DeviceClass parent_class
;
39 * Let the sysbus device format its own non-PIO, non-MMIO unit address.
41 * Sometimes a class of SysBusDevices has neither MMIO nor PIO resources,
42 * yet instances of it would like to distinguish themselves, in
43 * OpenFirmware device paths, from other instances of the same class on the
44 * sysbus. For that end we expose this callback.
46 * The implementation is not supposed to change *@dev, or incur other
49 * The function returns a dynamically allocated string. On error, NULL
50 * should be returned; the unit address portion of the OFW node will be
51 * omitted then. (This is not considered a fatal error.)
53 char *(*explicit_ofw_unit_address
)(const SysBusDevice
*dev
);
54 void (*connect_irq_notifier
)(SysBusDevice
*dev
, qemu_irq irq
);
59 DeviceState parent_obj
;
66 } mmio
[QDEV_MAX_MMIO
];
68 uint32_t pio
[QDEV_MAX_PIO
];
71 typedef void FindSysbusDeviceFunc(SysBusDevice
*sbdev
, void *opaque
);
73 void sysbus_init_mmio(SysBusDevice
*dev
, MemoryRegion
*memory
);
74 MemoryRegion
*sysbus_mmio_get_region(SysBusDevice
*dev
, int n
);
75 void sysbus_init_irq(SysBusDevice
*dev
, qemu_irq
*p
);
76 void sysbus_pass_irq(SysBusDevice
*dev
, SysBusDevice
*target
);
77 void sysbus_init_ioports(SysBusDevice
*dev
, uint32_t ioport
, uint32_t size
);
80 bool sysbus_has_irq(SysBusDevice
*dev
, int n
);
81 bool sysbus_has_mmio(SysBusDevice
*dev
, unsigned int n
);
82 void sysbus_connect_irq(SysBusDevice
*dev
, int n
, qemu_irq irq
);
83 bool sysbus_is_irq_connected(SysBusDevice
*dev
, int n
);
84 qemu_irq
sysbus_get_connected_irq(SysBusDevice
*dev
, int n
);
85 void sysbus_mmio_map(SysBusDevice
*dev
, int n
, hwaddr addr
);
86 void sysbus_mmio_map_overlap(SysBusDevice
*dev
, int n
, hwaddr addr
,
88 void sysbus_mmio_unmap(SysBusDevice
*dev
, int n
);
89 void sysbus_add_io(SysBusDevice
*dev
, hwaddr addr
,
91 MemoryRegion
*sysbus_address_space(SysBusDevice
*dev
);
93 bool sysbus_realize(SysBusDevice
*dev
, Error
**errp
);
94 bool sysbus_realize_and_unref(SysBusDevice
*dev
, Error
**errp
);
96 /* Call func for every dynamically created sysbus device in the system */
97 void foreach_dynamic_sysbus_device(FindSysbusDeviceFunc
*func
, void *opaque
);
99 /* Legacy helper function for creating devices. */
100 DeviceState
*sysbus_create_varargs(const char *name
,
103 static inline DeviceState
*sysbus_create_simple(const char *name
,
107 return sysbus_create_varargs(name
, addr
, irq
, NULL
);
110 #endif /* HW_SYSBUS_H */