diff --git a/drivers/scsi/a2091.h b/drivers/scsi/a2091.h
new file mode 100644
index 0000000..5499397
--- /dev/null
+++ b/drivers/scsi/a2091.h
@@ -0,0 +1,76 @@
+#ifndef A2091_H
+#define A2091_H
+
+/* $Id: a2091.h,v 1.4 1997/01/19 23:07:09 davem Exp $
+ *
+ * Header file for the Commodore A2091 Zorro II SCSI controller for Linux
+ *
+ * Written and (C) 1993, Hamish Macdonald, see a2091.c for more info
+ *
+ */
+
+#include <linux/types.h>
+
+int a2091_detect(Scsi_Host_Template *);
+int a2091_release(struct Scsi_Host *);
+const char *wd33c93_info(void);
+int wd33c93_queuecommand(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
+int wd33c93_abort(Scsi_Cmnd *);
+int wd33c93_reset(Scsi_Cmnd *, unsigned int);
+
+#ifndef CMD_PER_LUN
+#define CMD_PER_LUN 2
+#endif
+
+#ifndef CAN_QUEUE
+#define CAN_QUEUE 16
+#endif
+
+/*
+ * if the transfer address ANDed with this results in a non-zero
+ * result, then we can't use DMA.
+ */
+#define A2091_XFER_MASK  (0xff000001)
+
+typedef struct {
+             unsigned char      pad1[64];
+    volatile unsigned short     ISTR;
+    volatile unsigned short     CNTR;
+             unsigned char      pad2[60];
+    volatile unsigned int       WTC;
+    volatile unsigned long      ACR;
+             unsigned char      pad3[6];
+    volatile unsigned short     DAWR;
+             unsigned char      pad4;
+    volatile unsigned char      SASR;
+             unsigned char      pad5;
+    volatile unsigned char      SCMD;
+             unsigned char      pad6[76];
+    volatile unsigned short     ST_DMA;
+    volatile unsigned short     SP_DMA;
+    volatile unsigned short     CINT;
+             unsigned char      pad7[2];
+    volatile unsigned short     FLUSH;
+} a2091_scsiregs;
+
+#define DAWR_A2091		(3)
+
+/* CNTR bits. */
+#define CNTR_TCEN		(1<<7)
+#define CNTR_PREST		(1<<6)
+#define CNTR_PDMD		(1<<5)
+#define CNTR_INTEN		(1<<4)
+#define CNTR_DDIR		(1<<3)
+
+/* ISTR bits. */
+#define ISTR_INTX		(1<<8)
+#define ISTR_INT_F		(1<<7)
+#define ISTR_INTS		(1<<6)
+#define ISTR_E_INT		(1<<5)
+#define ISTR_INT_P		(1<<4)
+#define ISTR_UE_INT		(1<<3)
+#define ISTR_OE_INT		(1<<2)
+#define ISTR_FF_FLG		(1<<1)
+#define ISTR_FE_FLG		(1<<0)
+
+#endif /* A2091_H */