Home | History | Annotate | Line # | Download | only in include
dvma3.h revision 1.9 
      1 /*	$NetBSD: dvma3.h,v 1.9 1998/02/05 04:56:50 gwr Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1996 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Gordon W. Ross.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 /*
     40  * DVMA (SUN3 specific)
     41  *
     42  * Note that while the DVMA harware makes the last 1MB visible
     43  * for secondary masters, the PROM "owns" the last page of it.
     44  * Also note that OBIO devices can actually see the last 16MB
     45  * of kernel virtual space.  That can be mostly ignored, except
     46  * when calculating the alias address for slave access.
     47  */
     48 #define DVMA_MAP_BASE	0x0FF00000
     49 #define DVMA_MAP_SIZE	0x00100000
     50 #define DVMA_MAP_AVAIL	(DVMA_MAP_SIZE-NBPG)
     51 
     52 /*
     53  * To convert an address in DVMA space to a slave address,
     54  * just use a logical AND with one of the following masks.
     55  * To convert back, just logical OR with the base address.
     56  */
     57 #define DVMA_OBIO_SLAVE_BASE	0x0F000000
     58 #define DVMA_OBIO_SLAVE_MASK	0x00FFffff	/* 16MB */
     59 
     60 #define DVMA_VME_SLAVE_BASE 	0x0FF00000
     61 #define DVMA_VME_SLAVE_MASK 	0x000Fffff	/*  1MB */
     62