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