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Subject: [PATCH] DTC - validation by device_type
From: Paul Nasrat <pnasrat@redhat.com>
To: Jon Loeliger <jdl@jdl.com>
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Date: Tue, 28 Mar 2006 17:49:20 -0500
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Jon,

It'd be nice to be able to validate by device_type, to ensure that we
don't reinvent the wheel (address vs. local-mac-address) and to give
embedded designers an added level of sanity checking.

Here is a proposed implementation with an implemented check for
"network".

Signed-off-by: Paul Nasrat <pnasrat@redhat.com>

diff --git a/livetree.c b/livetree.c
index ef54174..351773b 100644
--- a/livetree.c
+++ b/livetree.c
@@ -441,6 +441,52 @@ static int check_structure(struct node *
 				(propname), (node)->fullpath); \
 	} while (0)
 
+static int check_network(struct node *net)
+{
+
+	int ok = 1;
+	struct property *prop;
+
+	CHECK_HAVE_STREQ(net, "device_type", "network");
+	CHECK_HAVE(net, "reg");
+	CHECK_HAVE(net, "local-mac-address");
+	CHECK_HAVE(net, "mac-address");
+	CHECK_HAVE(net, "address-bits");
+
+	return ok;
+}
+
+static struct {
+	char *devtype;
+	int (*check_fn)(struct node *node);
+} devtype_checker_table[] = {
+	{"network", check_network},
+};
+
+static int check_devtypes(struct node *root)
+{
+
+	struct node *child;
+	struct property *prop;
+	int ok = 1;
+	int i;
+
+	for_each_child(root, child) {
+		/* check this node */
+		if ((prop = get_property((child), ("device_type"))))
+			for (i = 0; i < ARRAY_SIZE(devtype_checker_table); i++) {
+				if (streq(prop->val.val, devtype_checker_table[i].devtype))
+					if (! devtype_checker_table[i].check_fn(child)) {
+						ok = 0;
+						break;
+						}
+			}
+		ok = check_devtypes(child);
+	}
+
+	return ok;
+}
+
 static int check_root(struct node *root)
 {
 	struct property *prop;
@@ -716,6 +762,7 @@ int check_device_tree(struct node *dt)
 	ok = ok && check_cpus(dt);
 	ok = ok && check_memory(dt);
 	ok = ok && check_chosen(dt);
+	ok = ok && check_devtypes(dt);
 	if (! ok)
 		return 0;