blob: c4a1c0adfa5a135bc51796eebf3dc31402959510 [file] [log] [blame]
#ifndef HW_SYSBUS_H
#define HW_SYSBUS_H
/* Devices attached directly to the main system bus. */
#include "hw/qdev-core.h"
#include "exec/memory.h"
#define QDEV_MAX_MMIO 32
#define QDEV_MAX_PIO 32
#define TYPE_SYSTEM_BUS "System"
#define SYSTEM_BUS(obj) OBJECT_CHECK(BusState, (obj), TYPE_SYSTEM_BUS)
typedef struct SysBusDevice SysBusDevice;
#define TYPE_SYS_BUS_DEVICE "sys-bus-device"
#define SYS_BUS_DEVICE(obj) \
#define SYS_BUS_DEVICE_CLASS(klass) \
* SysBusDeviceClass:
* SysBusDeviceClass is not overriding #DeviceClass.realize, so derived
* classes overriding it are not required to invoke its implementation.
#define SYSBUS_DEVICE_GPIO_IRQ "sysbus-irq"
typedef struct SysBusDeviceClass {
/*< private >*/
DeviceClass parent_class;
* Let the sysbus device format its own non-PIO, non-MMIO unit address.
* Sometimes a class of SysBusDevices has neither MMIO nor PIO resources,
* yet instances of it would like to distinguish themselves, in
* OpenFirmware device paths, from other instances of the same class on the
* sysbus. For that end we expose this callback.
* The implementation is not supposed to change *@dev, or incur other
* observable change.
* The function returns a dynamically allocated string. On error, NULL
* should be returned; the unit address portion of the OFW node will be
* omitted then. (This is not considered a fatal error.)
char *(*explicit_ofw_unit_address)(const SysBusDevice *dev);
void (*connect_irq_notifier)(SysBusDevice *dev, qemu_irq irq);
} SysBusDeviceClass;
struct SysBusDevice {
/*< private >*/
DeviceState parent_obj;
/*< public >*/
int num_mmio;
struct {
hwaddr addr;
MemoryRegion *memory;
} mmio[QDEV_MAX_MMIO];
int num_pio;
uint32_t pio[QDEV_MAX_PIO];
typedef void FindSysbusDeviceFunc(SysBusDevice *sbdev, void *opaque);
void sysbus_init_mmio(SysBusDevice *dev, MemoryRegion *memory);
MemoryRegion *sysbus_mmio_get_region(SysBusDevice *dev, int n);
void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p);
void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target);
void sysbus_init_ioports(SysBusDevice *dev, uint32_t ioport, uint32_t size);
bool sysbus_has_irq(SysBusDevice *dev, int n);
bool sysbus_has_mmio(SysBusDevice *dev, unsigned int n);
void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq);
bool sysbus_is_irq_connected(SysBusDevice *dev, int n);
qemu_irq sysbus_get_connected_irq(SysBusDevice *dev, int n);
void sysbus_mmio_map(SysBusDevice *dev, int n, hwaddr addr);
void sysbus_mmio_map_overlap(SysBusDevice *dev, int n, hwaddr addr,
int priority);
void sysbus_mmio_unmap(SysBusDevice *dev, int n);
void sysbus_add_io(SysBusDevice *dev, hwaddr addr,
MemoryRegion *mem);
MemoryRegion *sysbus_address_space(SysBusDevice *dev);
* sysbus_init_child_obj:
* @parent: The parent object
* @childname: Used as name of the "child<>" property in the parent
* @child: A pointer to the memory to be used for the object.
* @childsize: The maximum size available at @child for the object.
* @childtype: The name of the type of the object to instantiate.
* This function will initialize an object and attach it to the main system
* bus. The memory for the object should have already been allocated. The
* object will then be added as child to the given parent. The returned object
* has a reference count of 1 (for the "child<...>" property from the parent),
* so the object will be finalized automatically when the parent gets removed.
void sysbus_init_child_obj(Object *parent, const char *childname, void *child,
size_t childsize, const char *childtype);
/* Call func for every dynamically created sysbus device in the system */
void foreach_dynamic_sysbus_device(FindSysbusDeviceFunc *func, void *opaque);
/* Legacy helper function for creating devices. */
DeviceState *sysbus_create_varargs(const char *name,
hwaddr addr, ...);
static inline DeviceState *sysbus_create_simple(const char *name,
hwaddr addr,
qemu_irq irq)
return sysbus_create_varargs(name, addr, irq, NULL);
#endif /* HW_SYSBUS_H */