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sysbus: Add dynamic sysbus device search

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Sysbus devices can be spawned by C code or dynamically via the command line.
In the latter case, we need to be able to find the dynamically created devices
to do things with them.

This patch adds a search helper that makes it easy to look for dynamically
spawned sysbus devices.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2014-09-24 13:06:57 +02:00
parent f8833a37c0
commit eb5722801c
2 changed files with 50 additions and 0 deletions
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45
hw/core/sysbus.c
View file

@ -24,6 +24,51 @@
static void sysbus_dev_print(Monitor *mon, DeviceState *dev, int indent);
static char *sysbus_get_fw_dev_path(DeviceState *dev);
typedef struct SysBusFind {
void *opaque;
FindSysbusDeviceFunc *func;
} SysBusFind;
/* Run func() for every sysbus device, traverse the tree for everything else */
static int find_sysbus_device(Object *obj, void *opaque)
{
SysBusFind *find = opaque;
Object *dev;
SysBusDevice *sbdev;
dev = object_dynamic_cast(obj, TYPE_SYS_BUS_DEVICE);
sbdev = (SysBusDevice *)dev;
if (!sbdev) {
/* Container, traverse it for children */
return object_child_foreach(obj, find_sysbus_device, opaque);
}
find->func(sbdev, find->opaque);
return 0;
}
/*
* Loop through all dynamically created sysbus devices and call
* func() for each instance.
*/
void foreach_dynamic_sysbus_device(FindSysbusDeviceFunc *func, void *opaque)
{
Object *container;
SysBusFind find = {
.func = func,
.opaque = opaque,
};
/* Loop through all sysbus devices that were spawened outside the machine */
container = container_get(qdev_get_machine(), "/peripheral");
find_sysbus_device(container, &find);
container = container_get(qdev_get_machine(), "/peripheral-anon");
find_sysbus_device(container, &find);
}
static void system_bus_class_init(ObjectClass *klass, void *data)
{
BusClass *k = BUS_CLASS(klass);