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diff --git a/kernel/drivers/isdn/hardware/eicon/dfifo.h b/kernel/drivers/isdn/hardware/eicon/dfifo.h
new file mode 100644
index 000000000..6a1d3337f
--- /dev/null
+++ b/kernel/drivers/isdn/hardware/eicon/dfifo.h
@@ -0,0 +1,54 @@
+
+/*
+ *
+ Copyright (c) Eicon Networks, 2002.
+ *
+ This source file is supplied for the use with
+ Eicon Networks range of DIVA Server Adapters.
+ *
+ Eicon File Revision :    2.1
+ *
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+ *
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY OF ANY KIND WHATSOEVER INCLUDING ANY
+ implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ See the GNU General Public License for more details.
+ *
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+#ifndef __DIVA_IDI_DFIFO_INC__
+#define __DIVA_IDI_DFIFO_INC__
+#define DIVA_DFIFO_CACHE_SZ   64 /* Used to isolate pipe from
+				    rest of the world
+				    should be divisible by 4
+				 */
+#define DIVA_DFIFO_RAW_SZ    (2512 * 8)
+#define DIVA_DFIFO_DATA_SZ   68
+#define DIVA_DFIFO_HDR_SZ    4
+#define DIVA_DFIFO_SEGMENT_SZ  (DIVA_DFIFO_DATA_SZ + DIVA_DFIFO_HDR_SZ)
+#define DIVA_DFIFO_SEGMENTS   ((DIVA_DFIFO_RAW_SZ) / (DIVA_DFIFO_SEGMENT_SZ) + 1)
+#define DIVA_DFIFO_MEM_SZ (						\
+		(DIVA_DFIFO_SEGMENT_SZ) * (DIVA_DFIFO_SEGMENTS) +	\
+		(DIVA_DFIFO_CACHE_SZ) * 2				\
+		)
+#define DIVA_DFIFO_STEP DIVA_DFIFO_SEGMENT_SZ
+/* -------------------------------------------------------------------------
+   Block header layout is:
+   byte[0] -> flags
+   byte[1] -> length of data in block
+   byte[2] -> reserved
+   byte[4] -> reserved
+   ------------------------------------------------------------------------- */
+#define DIVA_DFIFO_WRAP   0x80 /* This is the last block in fifo   */
+#define DIVA_DFIFO_READY  0x40 /* This block is ready for processing */
+#define DIVA_DFIFO_LAST   0x20 /* This block is last in message      */
+#define DIVA_DFIFO_AUTO   0x10 /* Don't look for 'ready', don't ack */
+int diva_dfifo_create(void *start, int length);
+#endif