xref: /src/sys/dev/qbus/ubareg.h

/*	$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 */