From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34365) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fj3sH-0003FB-Ma for qemu-devel@nongnu.org; Fri, 27 Jul 2018 10:37:46 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fj3sG-0008Ih-Nt for qemu-devel@nongnu.org; Fri, 27 Jul 2018 10:37:45 -0400 From: Damien Hedde Date: Fri, 27 Jul 2018 16:37:21 +0200 Message-Id: <2b92ae960dfc47149945c9e47f90b4433d8eee35.1532701430.git.damien.hedde@greensocs.com> In-Reply-To: References: Subject: [Qemu-devel] [RFC PATCH 2/6] qdev: add power/clock gating control on bus tree List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, pbonzini@redhat.com, peter.maydell@linaro.org, edgar.iglesias@xilinx.com, mark.burton@greensocs.com, saipava@xilinx.com, luc.michel@greensocs.com, alistair@alistair23.me, Damien Hedde 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 --- 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