diff options
author | Alexander Graf <agraf@suse.de> | 2014-09-24 13:06:57 +0200 |
---|---|---|
committer | Alexander Graf <agraf@suse.de> | 2014-11-04 23:26:14 +0100 |
commit | eb5722801c84f23428c50e2336d02e400ce55deb (patch) | |
tree | cff20750e2dfd11062cc39f54349cadc5c9c8902 | |
parent | f8833a37c0c6b22ddd57b45e48cfb0f97dbd5af4 (diff) | |
download | qemu-eb5722801c84f23428c50e2336d02e400ce55deb.zip qemu-eb5722801c84f23428c50e2336d02e400ce55deb.tar.gz qemu-eb5722801c84f23428c50e2336d02e400ce55deb.tar.bz2 |
sysbus: Add dynamic sysbus device search
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 <agraf@suse.de>
-rw-r--r-- | hw/core/sysbus.c | 45 | ||||
-rw-r--r-- | include/hw/sysbus.h | 5 |
2 files changed, 50 insertions, 0 deletions
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, ...); |