Changeset 36db5ac in mainline

Timestamp:

2006-09-30T10:56:10Z (18 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

0b414b5

Parents:

34bd143

Message:

Add function to find OFW tree node by handle.

Location:

kernel/genarch

Files:

• include/ofw/ofw_tree.h (modified) (1 diff)
• src/ofw/ofw_tree.c (modified) (1 diff)

kernel/genarch/include/ofw/ofw_tree.h

@@ -134 +134 @@
 extern ofw_tree_node_t *ofw_tree_find_child_by_device_type(ofw_tree_node_t *node, const char *device_type);
 extern ofw_tree_node_t *ofw_tree_find_peer_by_device_type(ofw_tree_node_t *node, const char *device_type);
+extern ofw_tree_node_t *ofw_tree_find_node_by_handle(ofw_tree_node_t *root, uint32_t handle);
 
 extern bool ofw_fhc_apply_ranges(ofw_tree_node_t *node, ofw_fhc_reg_t *reg, uintptr_t *pa);

kernel/genarch/src/ofw/ofw_tree.c

@@ -148 +148 @@
 }
 
+/** Lookup node with matching node_handle.
+ *
+ * @param root Root of the searched subtree.
+ * @param handle OpenFirmware handle.
+ *
+ * @return NULL if there is no such node or pointer to the matching node.
+ */
+ofw_tree_node_t *ofw_tree_find_node_by_handle(ofw_tree_node_t *root, uint32_t handle)
+{
+        ofw_tree_node_t *node;
+
+        if (root->node_handle == handle)
+                return root;
+
+        if (root->peer) {
+                node = ofw_tree_find_node_by_handle(root->peer, handle);
+                if (node)
+                        return node;
+        }
+                
+        if (root->child) {
+                node = ofw_tree_find_node_by_handle(root->child, handle);
+                if (node)
+                        return node;
+        }
+        
+        return NULL;    
+}
+
 /** Lookup first peer of given device type.
  *