diff --git a/sound/oss/iwmem.h b/sound/oss/iwmem.h
new file mode 100644
index 0000000..84745fbc
--- /dev/null
+++ b/sound/oss/iwmem.h
@@ -0,0 +1,36 @@
+/*
+ * sound/iwmem.h
+ *
+ * DRAM size encoding table for AMD Interwave chip.
+ */
+/*
+ * Copyright (C) by Hannu Savolainen 1993-1997
+ *
+ * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
+ * Version 2 (June 1991). See the "COPYING" file distributed with this software
+ * for more info.
+ *
+ * Changes:
+ * Bartlomiej Zolnierkiewicz	: added __initdata to mem_decode
+ */
+
+
+#define K 1024
+#define M (1024*K)
+static int mem_decode[][4] __initdata =
+{
+/*	Bank0	Bank1	Bank2	Bank3	Encoding bits	*/
+	{256*K,	0,	0,	0},		/*  0 */
+	{256*K,	256*K,	0,	0},		/*  1 */
+	{256*K,	256*K,	256*K,	256*K},		/*  2 */
+	{256*K,	1*M,	0,	0},		/*  3 */
+	{256*K,	1*M,	1*M,	1*M},		/*  4 */
+	{256*K,	256*K,	1*M,	0},		/*  5 */
+	{256*K,	256*K,	1*M,	1*M},		/*  6 */
+	{1*M,	0,	0,	0},		/*  7 */
+	{1*M,	1*M,	0,	0},		/*  8 */
+	{1*M,	1*M,	1*M,	1*M},		/*  9 */
+	{4*M,	0,	0,	0},		/* 10 */
+	{4*M,	4*M,	0,	0},		/* 11 */
+	{4*M,	4*M,	4*M,	4*M}		/* 12 */
+};