[src/trunk]: src/sys/dev/arcbios Add routines to walk the ARC BIOS component ...

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7d82decda681
branches:  trunk
changeset: 512287:7d82decda681
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Sun Jul 08 22:57:10 2001 +0000

description:
Add routines to walk the ARC BIOS component tree.

diffstat:

 sys/dev/arcbios/arcbios.c    |  38 +++++++++++++++++++++++++++++++++++++-
 sys/dev/arcbios/arcbiosvar.h |  13 ++++++++++++-
 2 files changed, 49 insertions(+), 2 deletions(-)

diffs (82 lines):

diff -r c2261a5d65ee -r 7d82decda681 sys/dev/arcbios/arcbios.c
--- a/sys/dev/arcbios/arcbios.c Sun Jul 08 22:30:15 2001 +0000
+++ b/sys/dev/arcbios/arcbios.c Sun Jul 08 22:57:10 2001 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: arcbios.c,v 1.1 2001/07/08 19:58:02 thorpej Exp $      */
+/*     $NetBSD: arcbios.c,v 1.2 2001/07/08 22:57:10 thorpej Exp $      */
 
 /*-
  * Copyright (c) 2001 The NetBSD Foundation, Inc.
@@ -85,6 +85,42 @@
        return (0);
 }
 
+/****************************************************************************
+ * ARC component tree walking routines.
+ ****************************************************************************/
+
+static void
+arcbios_subtree_walk(struct arcbios_component *node,
+    void (*func)(struct arcbios_component *, struct arcbios_treewalk_context *),
+    struct arcbios_treewalk_context *atc)
+{
+
+       for (node = (*ARCBIOS->GetChild)(node);
+            node != NULL && atc->atc_terminate == 0;
+            node = (*ARCBIOS->GetPeer)(node)) {
+               (*func)(node, atc);
+               if (atc->atc_terminate)
+                       return;
+               arcbios_subtree_walk(node, func, atc);
+       }
+}
+
+void
+arcbios_tree_walk(void (*func)(struct arcbios_component *,
+    struct arcbios_treewalk_context *), void *cookie)
+{
+       struct arcbios_treewalk_context atc;
+
+       atc.atc_cookie = cookie;
+       atc.atc_terminate = 0;
+
+       arcbios_subtree_walk(NULL, func, &atc);
+}
+
+/****************************************************************************
+ * Bootstrap console routines.
+ ****************************************************************************/
+
 int
 arcbios_cngetc(dev_t dev)
 {
diff -r c2261a5d65ee -r 7d82decda681 sys/dev/arcbios/arcbiosvar.h
--- a/sys/dev/arcbios/arcbiosvar.h      Sun Jul 08 22:30:15 2001 +0000
+++ b/sys/dev/arcbios/arcbiosvar.h      Sun Jul 08 22:57:10 2001 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: arcbiosvar.h,v 1.1 2001/07/08 19:58:03 thorpej Exp $   */
+/*     $NetBSD: arcbiosvar.h,v 1.2 2001/07/08 22:57:10 thorpej Exp $   */
 
 /*-
  * Copyright (c) 2001 The NetBSD Foundation, Inc.
@@ -38,9 +38,20 @@
 
 #ifdef _KERNEL
 
+/*
+ * Context used when walking the ARC BIOS component tree.
+ */
+struct arcbios_treewalk_context {
+       void *atc_cookie;               /* client context */
+       int atc_terminate;              /* to short-cut to the end */
+};
+
 extern const struct arcbios_spb *ARCBIOS_SPB;
 extern const struct arcbios_fv *ARCBIOS;
 
 int    arcbios_init(vaddr_t);
 
+void   arcbios_tree_walk(void (*)(struct arcbios_component *,
+           struct arcbios_treewalk_context *), void *);
+
 #endif /* _KERNEL */