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vmstate: port i2c_bus device

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Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Juan Quintela 2009-09-29 22:48:27 +02:00 committed by Anthony Liguori
parent 5b7f53270a
commit 8d0eb050d6
1 changed files with 19 additions and 12 deletions
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31
hw/i2c.c
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@ -26,36 +26,43 @@ static struct BusInfo i2c_bus_info = {
}
};
static void i2c_bus_save(QEMUFile *f, void *opaque)
static void i2c_bus_pre_save(void *opaque)
{
i2c_bus *bus = (i2c_bus *)opaque;
bus->saved_address = bus->current_dev ? bus->current_dev->address : -1;
i2c_bus *bus = opaque;
qemu_put_8s(f, &bus->saved_address);
bus->saved_address = bus->current_dev ? bus->current_dev->address : -1;
}
static int i2c_bus_load(QEMUFile *f, void *opaque, int version_id)
static int i2c_bus_post_load(void *opaque, int version_id)
{
i2c_bus *bus = (i2c_bus *)opaque;
if (version_id != 1)
return -EINVAL;
i2c_bus *bus = opaque;
/* The bus is loaded before attached devices, so load and save the
current device id. Devices will check themselves as loaded. */
qemu_get_8s(f, &bus->saved_address);
bus->current_dev = NULL;
return 0;
}
static const VMStateDescription vmstate_i2c_bus = {
.name = "i2c_bus",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.pre_save = i2c_bus_pre_save,
.post_load = i2c_bus_post_load,
.fields = (VMStateField []) {
VMSTATE_UINT8(saved_address, i2c_bus),
VMSTATE_END_OF_LIST()
}
};
/* Create a new I2C bus. */
i2c_bus *i2c_init_bus(DeviceState *parent, const char *name)
{
i2c_bus *bus;
bus = FROM_QBUS(i2c_bus, qbus_create(&i2c_bus_info, parent, name));
register_savevm("i2c_bus", -1, 1, i2c_bus_save, i2c_bus_load, bus);
vmstate_register(-1, &vmstate_i2c_bus, bus);
return bus;
}