1 /* $NetBSD: dvma3x.h,v 1.5 1998/02/05 04:56:51 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 (SUN3X specific) 41 * 42 * (Most of the comments pertaining to the sun3x DVMA are now 43 * in sun3x/dvma.c) 44 * 45 * Note that while the DVMA harware makes the last 1MB visible 46 * for secondary masters, the PROM "owns" the last page of it. 47 * Also note that OBIO devices can actually see the last 16MB 48 * of kernel virtual space. That can be mostly ignored, except 49 * when calculating the alias address for slave access. 50 */ 51 #define DVMA_MAP_BASE 0xFFF00000 52 #define DVMA_MAP_SIZE 0x00100000 53 #define DVMA_MAP_AVAIL (DVMA_MAP_SIZE-NBPG) 54 55 /* 56 * To convert an address in DVMA space to a slave address, 57 * just use a logical AND with one of the following masks. 58 * To convert back, just logical OR with the base address. 59 */ 60 #define DVMA_OBIO_SLAVE_BASE 0xFF000000 61 #define DVMA_OBIO_SLAVE_MASK 0x00FFffff /* 16MB */ 62 63 #define DVMA_VME_SLAVE_BASE 0xFFF00000 64 #define DVMA_VME_SLAVE_MASK 0x000Fffff /* 1MB */ 65