From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36356) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xljkw-00021o-He for qemu-devel@nongnu.org; Tue, 04 Nov 2014 14:27:19 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Xljkl-0007zg-6T for qemu-devel@nongnu.org; Tue, 04 Nov 2014 14:27:06 -0500 From: Alexander Graf Date: Tue, 4 Nov 2014 20:26:41 +0100 Message-Id: <1415129211-9740-24-git-send-email-agraf@suse.de> In-Reply-To: <1415129211-9740-1-git-send-email-agraf@suse.de> References: <1415129211-9740-1-git-send-email-agraf@suse.de> Subject: [Qemu-devel] [PULL 23/33] sysbus: Add dynamic sysbus device search List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-ppc@nongnu.org Cc: peter.maydell@linaro.org, qemu-devel@nongnu.org Sysbus devices can be spawned by C code or dynamically via the command line. In the latter case, we need to be able to find the dynamically created devices to do things with them. This patch adds a search helper that makes it easy to look for dynamically spawned sysbus devices. Signed-off-by: Alexander Graf --- hw/core/sysbus.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ include/hw/sysbus.h | 5 +++++ 2 files changed, 50 insertions(+) diff --git a/hw/core/sysbus.c b/hw/core/sysbus.c index e55c3c1..19437e6 100644 --- a/hw/core/sysbus.c +++ b/hw/core/sysbus.c @@ -24,6 +24,51 @@ static void sysbus_dev_print(Monitor *mon, DeviceState *dev, int indent); static char *sysbus_get_fw_dev_path(DeviceState *dev); +typedef struct SysBusFind { + void *opaque; + FindSysbusDeviceFunc *func; +} SysBusFind; + +/* Run func() for every sysbus device, traverse the tree for everything else */ +static int find_sysbus_device(Object *obj, void *opaque) +{ + SysBusFind *find = opaque; + Object *dev; + SysBusDevice *sbdev; + + dev = object_dynamic_cast(obj, TYPE_SYS_BUS_DEVICE); + sbdev = (SysBusDevice *)dev; + + if (!sbdev) { + /* Container, traverse it for children */ + return object_child_foreach(obj, find_sysbus_device, opaque); + } + + find->func(sbdev, find->opaque); + + return 0; +} + +/* + * Loop through all dynamically created sysbus devices and call + * func() for each instance. + */ +void foreach_dynamic_sysbus_device(FindSysbusDeviceFunc *func, void *opaque) +{ + Object *container; + SysBusFind find = { + .func = func, + .opaque = opaque, + }; + + /* Loop through all sysbus devices that were spawened outside the machine */ + container = container_get(qdev_get_machine(), "/peripheral"); + find_sysbus_device(container, &find); + container = container_get(qdev_get_machine(), "/peripheral-anon"); + find_sysbus_device(container, &find); +} + + static void system_bus_class_init(ObjectClass *klass, void *data) { BusClass *k = BUS_CLASS(klass); diff --git a/include/hw/sysbus.h b/include/hw/sysbus.h index 9fb1782..80529ff 100644 --- a/include/hw/sysbus.h +++ b/include/hw/sysbus.h @@ -57,6 +57,8 @@ struct SysBusDevice { pio_addr_t pio[QDEV_MAX_PIO]; }; +typedef int FindSysbusDeviceFunc(SysBusDevice *sbdev, void *opaque); + void sysbus_init_mmio(SysBusDevice *dev, MemoryRegion *memory); MemoryRegion *sysbus_mmio_get_region(SysBusDevice *dev, int n); void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p); @@ -72,6 +74,9 @@ void sysbus_add_io(SysBusDevice *dev, hwaddr addr, MemoryRegion *mem); MemoryRegion *sysbus_address_space(SysBusDevice *dev); +/* Call func for every dynamically created sysbus device in the system */ +void foreach_dynamic_sysbus_device(FindSysbusDeviceFunc *func, void *opaque); + /* Legacy helper function for creating devices. */ DeviceState *sysbus_create_varargs(const char *name, hwaddr addr, ...); -- 1.8.1.4