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sysbus: New sysbus_realize(), sysbus_realize_and_unref()

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Sysbus devices almost always plug into the main system bus.
qdev_create() even has a convenience feature to make that easy: a null
bus argument gets replaced by the main system bus.  qdev_realize() and
qdev_realize_and_unref() do the same.

We can do better.  Provide convenience wrappers around qdev_realize()
and qdev_realize_and_unref() that don't take a @bus argument.  They
always pass the main system bus.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200610053247.1583243-45-armbru@redhat.com>
This commit is contained in:
Markus Armbruster 2020-06-10 07:32:33 +02:00
parent b45ad78889
commit 496a852562
2 changed files with 15 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
hw/core/sysbus.c
View File

@ -217,7 +217,7 @@ void sysbus_init_ioports(SysBusDevice *dev, uint32_t ioport, uint32_t size)
* from being set to NULL to break the normal init/realize
* of some devices.
*/
static void sysbus_realize(DeviceState *dev, Error **errp)
static void sysbus_device_realize(DeviceState *dev, Error **errp)
{
}
@ -250,6 +250,16 @@ DeviceState *sysbus_create_varargs(const char *name,
return dev;
}
bool sysbus_realize(SysBusDevice *dev, Error **errp)
{
return qdev_realize(DEVICE(dev), sysbus_get_default(), errp);
}
bool sysbus_realize_and_unref(SysBusDevice *dev, Error **errp)
{
return qdev_realize_and_unref(DEVICE(dev), sysbus_get_default(), errp);
}
static void sysbus_dev_print(Monitor *mon, DeviceState *dev, int indent)
{
SysBusDevice *s = SYS_BUS_DEVICE(dev);
@ -301,7 +311,7 @@ MemoryRegion *sysbus_address_space(SysBusDevice *dev)
static void sysbus_device_class_init(ObjectClass *klass, void *data)
{
DeviceClass *k = DEVICE_CLASS(klass);
k->realize = sysbus_realize;
k->realize = sysbus_device_realize;
k->bus_type = TYPE_SYSTEM_BUS;
/*
* device_add plugs devices into a suitable bus. For "real" buses,

4
include/hw/sysbus.h
View File

@ -90,6 +90,9 @@ void sysbus_add_io(SysBusDevice *dev, hwaddr addr,
MemoryRegion *mem);
MemoryRegion *sysbus_address_space(SysBusDevice *dev);
bool sysbus_realize(SysBusDevice *dev, Error **errp);
bool sysbus_realize_and_unref(SysBusDevice *dev, Error **errp);
/**
* sysbus_init_child_obj:
* @parent: The parent object
@ -121,5 +124,4 @@ static inline DeviceState *sysbus_create_simple(const char *name,
return sysbus_create_varargs(name, addr, irq, NULL);
}
#endif /* HW_SYSBUS_H */