Record device property types

Record device property types, and provide a list of properties at device
registration time.

Add a "device" property type that holds a reference to annother device.

Signed-off-by: Paul Brook <paul@codesourcery.com>

1 files changed, 32 insertions, 7 deletions

diff --git a/hw/qdev.c b/hw/qdev.c
index cedb7728a9..a7025da9a7 100644
--- a/hw/qdev.c
+++ b/hw/qdev.c
@@ -32,6 +32,7 @@
 
 struct DeviceProperty {
     const char *name;
+    DevicePropType type;
     union {
         uint64_t i;
         void *ptr;
@@ -119,13 +120,15 @@ void qdev_free(DeviceState *dev)
     free(dev);
 }
 
-static DeviceProperty *create_prop(DeviceState *dev, const char *name)
+static DeviceProperty *create_prop(DeviceState *dev, const char *name,
+                                   DevicePropType type)
 {
     DeviceProperty *prop;
 
     /* TODO: Check for duplicate properties.  */
     prop = qemu_mallocz(sizeof(*prop));
     prop->name = qemu_strdup(name);
+    prop->type = type;
     prop->next = dev->props;
     dev->props = prop;
 
@@ -136,15 +139,23 @@ void qdev_set_prop_int(DeviceState *dev, const char *name, uint64_t value)
 {
     DeviceProperty *prop;
 
-    prop = create_prop(dev, name);
+    prop = create_prop(dev, name, PROP_TYPE_INT);
     prop->value.i = value;
 }
 
+void qdev_set_prop_dev(DeviceState *dev, const char *name, DeviceState *value)
+{
+    DeviceProperty *prop;
+
+    prop = create_prop(dev, name, PROP_TYPE_DEV);
+    prop->value.ptr = value;
+}
+
 void qdev_set_prop_ptr(DeviceState *dev, const char *name, void *value)
 {
     DeviceProperty *prop;
 
-    prop = create_prop(dev, name);
+    prop = create_prop(dev, name, PROP_TYPE_INT);
     prop->value.ptr = value;
 }
 
@@ -173,12 +184,14 @@ BusState *qdev_get_parent_bus(DeviceState *dev)
     return dev->parent_bus;
 }
 
-static DeviceProperty *find_prop(DeviceState *dev, const char *name)
+static DeviceProperty *find_prop(DeviceState *dev, const char *name,
+                                 DevicePropType type)
 {
     DeviceProperty *prop;
 
     for (prop = dev->props; prop; prop = prop->next) {
         if (strcmp(prop->name, name) == 0) {
+            assert (prop->type == type);
             return prop;
         }
     }
@@ -189,9 +202,10 @@ uint64_t qdev_get_prop_int(DeviceState *dev, const char *name, uint64_t def)
 {
     DeviceProperty *prop;
 
-    prop = find_prop(dev, name);
-    if (!prop)
+    prop = find_prop(dev, name, PROP_TYPE_INT);
+    if (!prop) {
         return def;
+    }
 
     return prop->value.i;
 }
@@ -200,11 +214,22 @@ void *qdev_get_prop_ptr(DeviceState *dev, const char *name)
 {
     DeviceProperty *prop;
 
-    prop = find_prop(dev, name);
+    prop = find_prop(dev, name, PROP_TYPE_PTR);
     assert(prop);
     return prop->value.ptr;
 }
 
+DeviceState *qdev_get_prop_dev(DeviceState *dev, const char *name)
+{
+    DeviceProperty *prop;
+
+    prop = find_prop(dev, name, PROP_TYPE_DEV);
+    if (!prop) {
+        return NULL;
+    }
+    return prop->value.ptr;
+}
+
 void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n)
 {
     assert(dev->num_gpio_in == 0);