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src/sparse-0.4.4/perl/t/include/hw/qdev-core.h  view on Meta::CPAN

#define DEVICE(obj) OBJECT_CHECK(DeviceState, (obj), TYPE_DEVICE)
#define DEVICE_CLASS(klass) OBJECT_CLASS_CHECK(DeviceClass, (klass), TYPE_DEVICE)
#define DEVICE_GET_CLASS(obj) OBJECT_GET_CLASS(DeviceClass, (obj), TYPE_DEVICE)

typedef enum DeviceCategory {
    DEVICE_CATEGORY_BRIDGE,
    DEVICE_CATEGORY_USB,
    DEVICE_CATEGORY_STORAGE,
    DEVICE_CATEGORY_NETWORK,
    DEVICE_CATEGORY_INPUT,
    DEVICE_CATEGORY_DISPLAY,
    DEVICE_CATEGORY_SOUND,
    DEVICE_CATEGORY_MISC,
    DEVICE_CATEGORY_MAX
} DeviceCategory;

typedef int (*qdev_initfn)(DeviceState *dev);
typedef int (*qdev_event)(DeviceState *dev);
typedef void (*qdev_resetfn)(DeviceState *dev);
typedef void (*DeviceRealize)(DeviceState *dev, Error **errp);
typedef void (*DeviceUnrealize)(DeviceState *dev, Error **errp);

struct VMStateDescription;

/**
 * DeviceClass:
 * @props: Properties accessing state fields.
 * @realize: Callback function invoked when the #DeviceState:realized
 * property is changed to %true. The default invokes @init if not %NULL.
 * @unrealize: Callback function invoked when the #DeviceState:realized
 * property is changed to %false.
 * @init: Callback function invoked when the #DeviceState::realized property
 * is changed to %true. Deprecated, new types inheriting directly from
 * TYPE_DEVICE should use @realize instead, new leaf types should consult
 * their respective parent type.
 *
 * # Realization #
 * Devices are constructed in two stages,
 * 1) object instantiation via object_initialize() and
 * 2) device realization via #DeviceState:realized property.
 * The former may not fail (it might assert or exit), the latter may return
 * error information to the caller and must be re-entrant.
 * Trivial field initializations should go into #TypeInfo.instance_init.
 * Operations depending on @props static properties should go into @realize.
 * After successful realization, setting static properties will fail.
 *
 * As an interim step, the #DeviceState:realized property is set by deprecated
 * functions qdev_init() and qdev_init_nofail().
 * In the future, devices will propagate this state change to their children
 * and along busses they expose.
 * The point in time will be deferred to machine creation, so that values
 * set in @realize will not be introspectable beforehand. Therefore devices
 * must not create children during @realize; they should initialize them via
 * object_initialize() in their own #TypeInfo.instance_init and forward the
 * realization events appropriately.
 *
 * The @init callback is considered private to a particular bus implementation
 * (immediate abstract child types of TYPE_DEVICE). Derived leaf types set an
 * "init" callback on their parent class instead.
 *
 * Any type may override the @realize and/or @unrealize callbacks but needs
 * to call the parent type's implementation if keeping their functionality
 * is desired. Refer to QOM documentation for further discussion and examples.
 *
 * <note>
 *   <para>
 * If a type derived directly from TYPE_DEVICE implements @realize, it does
 * not need to implement @init and therefore does not need to store and call
 * #DeviceClass' default @realize callback.
 * For other types consult the documentation and implementation of the
 * respective parent types.
 *   </para>
 * </note>
 */
typedef struct DeviceClass {
    /*< private >*/
    ObjectClass parent_class;
    /*< public >*/

    DECLARE_BITMAP(categories, DEVICE_CATEGORY_MAX);
    const char *fw_name;
    const char *desc;
    Property *props;
    int no_user;

    /* callbacks */
    void (*reset)(DeviceState *dev);
    DeviceRealize realize;
    DeviceUnrealize unrealize;

    /* device state */
    const struct VMStateDescription *vmsd;

    /* Private to qdev / bus.  */
    qdev_initfn init; /* TODO remove, once users are converted to realize */
    qdev_event unplug;
    qdev_event exit; /* TODO remove, once users are converted to unrealize */
    const char *bus_type;
} DeviceClass;

/**
 * DeviceState:
 * @realized: Indicates whether the device has been fully constructed.
 *
 * This structure should not be accessed directly.  We declare it here
 * so that it can be embedded in individual device state structures.
 */
struct DeviceState {
    /*< private >*/
    Object parent_obj;
    /*< public >*/

    const char *id;
    bool realized;
    QemuOpts *opts;
    int hotplugged;
    BusState *parent_bus;
    int num_gpio_out;
    qemu_irq *gpio_out;
    int num_gpio_in;
    qemu_irq *gpio_in;
    QLIST_HEAD(, BusState) child_bus;
    int num_child_bus;
    int instance_id_alias;
    int alias_required_for_version;
};

#define TYPE_BUS "bus"
#define BUS(obj) OBJECT_CHECK(BusState, (obj), TYPE_BUS)
#define BUS_CLASS(klass) OBJECT_CLASS_CHECK(BusClass, (klass), TYPE_BUS)
#define BUS_GET_CLASS(obj) OBJECT_GET_CLASS(BusClass, (obj), TYPE_BUS)

struct BusClass {
    ObjectClass parent_class;

    /* FIXME first arg should be BusState */
    void (*print_dev)(Monitor *mon, DeviceState *dev, int indent);
    char *(*get_dev_path)(DeviceState *dev);
    /*
     * This callback is used to create Open Firmware device path in accordance
     * with OF spec http://forthworks.com/standards/of1275.pdf. Individual bus
     * bindings can be found at http://playground.sun.com/1275/bindings/.
     */
    char *(*get_fw_dev_path)(DeviceState *dev);
    int (*reset)(BusState *bus);
    /* maximum devices allowed on the bus, 0: no limit. */