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qdev/compat: compat property infrastructure.

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This add support for switching devices into a compatibility mode
using device properties.  Machine types can have a list of properties
for specific devices attached to allow the easy creation of machine
types compatible to older qemu versions.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Gerd Hoffmann 2009-07-15 13:48:21 +02:00 • committed by Anthony Liguori
parent 81ebb98b24
commit b6b6114460
5 changed files with 41 additions and 0 deletions
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11
hw/qdev.h
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@ -8,6 +8,8 @@ typedef struct Property Property;
typedef struct PropertyInfo PropertyInfo;
typedef struct CompatProperty CompatProperty;
typedef struct DeviceInfo DeviceInfo;
typedef struct BusState BusState;
@ -68,6 +70,12 @@ struct PropertyInfo {
int (*print)(DeviceState *dev, Property *prop, char *dest, size_t len);
};
struct CompatProperty {
const char *driver;
const char *property;
const char *value;
};
/*** Board API. This should go away once we have a machine config file. ***/
DeviceState *qdev_create(BusState *bus, const char *name);
@ -147,4 +155,7 @@ void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value);
void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value);
void qdev_prop_set_defaults(DeviceState *dev, Property *props);
void qdev_prop_register_compat(CompatProperty *props);
void qdev_prop_set_compat(DeviceState *dev);
#endif