/*      $NetBSD: ubareg.h,v 1.17 2017/05/22 17:22:29 ragge Exp $        */

/*
* Copyright (c) 2000 Ludd, University of Lule}, Sweden. All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/

/*
* UNIBUS/Qbus map table definitions. Not unlike VAX page tables.
* This type of map table is used in more devices than Unibus devices.
*/
#define UBA_V           0x80000000      /* PTE entry is valid */
#define UBA_BDPMASK     0x01e00000      /* BDP entries */
#define UBA_BDPSHIFT    21
#define UBA_PFN         0x001fffff      /* PFN map */

#define UBA_PGSHIFT     9
#define UBA_NBPG        (1 << 9)        /* Size of a Unibus map page */
#define UBA_PGOFSET     (UBA_NBPG - 1)

#define UBAIOSIZE       (8*1024)        /* 8K I/O space */