Add functions [qdev|qbus]_set_[power|clock]_all(_fn). Theses allow to control power and clock gating along a bus hierarchy.
Signed-off-by: Damien Hedde <damien.he...@greensocs.com> --- include/hw/qdev-core.h | 20 +++++++++++++++++ hw/core/qdev.c | 51 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 71 insertions(+) diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h index 659287e185..607c367738 100644 --- a/include/hw/qdev-core.h +++ b/include/hw/qdev-core.h @@ -464,4 +464,24 @@ void device_set_power(DeviceState *dev, bool en); */ void device_set_clock(DeviceState *dev, bool en); +/** + * qdev/qbus_set_power_all(_fn) + * Enable/Disable the power of a tree starting + * at given device or bus + */ +void qdev_set_power_all(DeviceState *dev, bool en); +void qdev_set_power_all_fn(void *opaque, bool en); +void qbus_set_power_all(BusState *bus, bool en); +void qbus_set_power_all_fn(void *opaque, bool en); + +/** + * qdev/qbus_set_clock_all(_fn) + * Enable/Disable the clock of a tree starting + * at given device or bus + */ +void qdev_set_clock_all(DeviceState *dev, bool en); +void qdev_set_clock_all_fn(void *opaque, bool en); +void qbus_set_clock_all(BusState *bus, bool en); +void qbus_set_clock_all_fn(void *opaque, bool en); + #endif diff --git a/hw/core/qdev.c b/hw/core/qdev.c index bb6d36eab9..24b90bd45f 100644 --- a/hw/core/qdev.c +++ b/hw/core/qdev.c @@ -1138,6 +1138,57 @@ void device_set_clock(DeviceState *dev, bool en) } } +static int qdev_set_power_one(DeviceState *dev, void *opaque) +{ + device_set_power(dev, *((bool *)opaque)); + return 0; +} + +void qdev_set_power_all(DeviceState *dev, bool en) +{ + qdev_walk_children(dev, NULL, NULL, qdev_set_power_one, NULL, &en); +} + +void qdev_set_power_all_fn(void *opaque, bool en) +{ + qdev_set_power_all(DEVICE(opaque), en); +} + +void qbus_set_power_all(BusState *bus, bool en) +{ + qbus_walk_children(bus, NULL, NULL, qdev_set_power_one, NULL, &en); +} + +void qbus_set_power_all_fn(void *opaque, bool en) +{ + qbus_set_power_all(BUS(opaque), en); +} + +static int qdev_set_clock_one(DeviceState *dev, void *opaque) +{ + device_set_clock(dev, *((bool *)opaque)); + return 0; +} + +void qdev_set_clock_all(DeviceState *dev, bool en) +{ + qdev_walk_children(dev, NULL, NULL, qdev_set_clock_one, NULL, &en); +} + +void qdev_set_clock_all_fn(void *opaque, bool en) +{ + qdev_set_clock_all(DEVICE(opaque), en); +} + +void qbus_set_clock_all(BusState *bus, bool en) +{ + qbus_walk_children(bus, NULL, NULL, qdev_set_clock_one, NULL, &en); +} + +void qbus_set_clock_all_fn(void *opaque, bool en) +{ + qbus_set_clock_all(BUS(opaque), en); +} Object *qdev_get_machine(void) { -- 2.18.0