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      1 /*	$NetBSD: ubareg.h,v 1.17 2017/05/22 17:22:29 ragge Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2000 Ludd, University of Lule}, Sweden. All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 /*
     28  * UNIBUS/Qbus map table definitions. Not unlike VAX page tables.
     29  * This type of map table is used in more devices than Unibus devices.
     30  */
     31 #define	UBA_V		0x80000000	/* PTE entry is valid */
     32 #define	UBA_BDPMASK	0x01e00000	/* BDP entries */
     33 #define	UBA_BDPSHIFT	21
     34 #define	UBA_PFN		0x001fffff	/* PFN map */
     35 
     36 #define	UBA_PGSHIFT	9
     37 #define	UBA_NBPG	(1 << 9)	/* Size of a Unibus map page */
     38 #define	UBA_PGOFSET	(UBA_NBPG - 1)
     39 
     40 #define	UBAIOSIZE	(8*1024)	/* 8K I/O space */
     41 
     42