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diff --git a/sys/scsi/scsi_generic.h b/sys/scsi/scsi_generic.h
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+/* 
+ * Contributed by HD Associates (hd@world.std.com).
+ * Copyright (c) 1992, 1993 HD Associates
+ *
+ * Berkeley style copyright.  I've just snarfed it out of stdio.h:
+ *
+ * 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.
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
+ *
+ *	from: @(#)stdio.h	5.17 (Berkeley) 6/3/91
+ *	$Id$
+ */
+
+/* generic SCSI header file.  We use the same minor number format
+ * as on SGI except that the flag bits aren't available because they
+ * are used as the board index.
+ *
+ * The minor number format is:
+ *  FF UUU III (FFUU UIII)
+ *
+ * Where:
+ *  FF is the board index
+ * UUU are the LUN
+ * III is the SCSI ID (controller)
+ */
+
+#ifndef _SCSI_GENERIC_H_
+#define _SCSI_GENERIC_H_
+
+#define G_SCSI_FLAG(DEV) (((DEV) & 0xC0) >> 6)
+#define G_SCSI_UNIT(DEV) G_SCSI_FLAG(DEV)
+#define G_SCSI_LUN(DEV) (((DEV) & 0x38) >> 3)
+#define G_SCSI_ID(DEV) ((DEV) & 0x7)
+
+#define G_SCSI_MINOR(FLAG, LUN, ID)  \
+ (((FLAG) << 6) | ((LUN) << 3) | (ID))
+
+#endif /* _SCSI_GENERIC_H_ */