xen/dt: add match for non-available nodes

Signed-off-by: Andrii Anisov <andrii.anisov@globallogic.com>
Acked-by: Julien Grall <julien.grall@linaro.org>
Acked-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/xen/common/device_tree.c b/xen/common/device_tree.c
index f0b17a3115394dee816af87269150b09e5fa9295..310635ea7d11900bc9da7b26eaf16585381cc194 100644 (file)
--- a/xen/common/device_tree.c
+++ b/xen/common/device_tree.c
@@ -680,7 +680,8 @@ bool_t dt_match_node(const struct dt_device_match *matches,
     if ( !matches )
         return 0;
 
-    while ( matches->path || matches->type || matches->compatible )
+    while ( matches->path || matches->type ||
+            matches->compatible || matches->not_available )
     {
         bool_t match = 1;
 
@@ -693,6 +694,9 @@ bool_t dt_match_node(const struct dt_device_match *matches,
         if ( matches->compatible )
             match &= dt_device_is_compatible(node, matches->compatible);
 
+        if ( matches->not_available )
+            match &= !dt_device_is_available(node);
+
         if ( match )
             return match;
 

diff --git a/xen/include/xen/device_tree.h b/xen/include/xen/device_tree.h
index 25db0764602d7dd30050b0fe529d04de799ea1ae..865e1ef0fef08f2e2b1155e042549d9d9ee64dfb 100644 (file)
--- a/xen/include/xen/device_tree.h
+++ b/xen/include/xen/device_tree.h
@@ -65,11 +65,13 @@ struct dt_device_match {
     const char *path;
     const char *type;
     const char *compatible;
+    const bool_t not_available;
 };
 
 #define DT_MATCH_PATH(p)                { .path = p }
 #define DT_MATCH_TYPE(typ)              { .type = typ }
 #define DT_MATCH_COMPATIBLE(compat)     { .compatible = compat }
+#define DT_MATCH_NOT_AVAILABLE()        { .not_available = 1 }
 
 typedef u32 dt_phandle;