1 files changed, 62 insertions, 0 deletions
diff --git a/sys/dev/mem/memutil.c b/sys/dev/mem/memutil.c
new file mode 100644
index 000000000000..f514f50bedb6
--- /dev/null
+++ b/sys/dev/mem/memutil.c
@@ -0,0 +1,62 @@
+/*-
+ * Copyright (c) 2004 Mark R V Murray
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer
+ *    in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/malloc.h>
+#include <sys/memrange.h>
+#include <sys/systm.h>
+
+/*
+ * Implementation-neutral, kernel-callable functions for manipulating
+ * memory range attributes.
+ */
+int
+mem_range_attr_get(struct mem_range_desc *mrd, int *arg)
+{
+	/* can we handle this? */
+	if (mem_range_softc.mr_op == NULL)
+		return (EOPNOTSUPP);
+
+	if (*arg == 0)
+		*arg = mem_range_softc.mr_ndesc;
+	else
+		bcopy(mem_range_softc.mr_desc, mrd,
+			(*arg) * sizeof(struct mem_range_desc));
+	return (0);
+}
+
+int
+mem_range_attr_set(struct mem_range_desc *mrd, int *arg)
+{
+	/* can we handle this? */
+	if (mem_range_softc.mr_op == NULL)
+		return (EOPNOTSUPP);
+
+	return (mem_range_softc.mr_op->set(&mem_range_softc, mrd, arg));
+}