1/* $NetBSD: dvma3.h,v 1.10 2003/04/02 07:53:58 thorpej 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32/* 33 * DVMA (SUN3 specific) 34 * 35 * Note that while the DVMA harware makes the last 1MB visible 36 * for secondary masters, the PROM "owns" the last page of it. 37 * Also note that OBIO devices can actually see the last 16MB 38 * of kernel virtual space. That can be mostly ignored, except 39 * when calculating the alias address for slave access. 40 */ 41#define DVMA_MAP_BASE 0x0FF00000 42#define DVMA_MAP_SIZE 0x00100000 43#define DVMA_MAP_AVAIL (DVMA_MAP_SIZE-PAGE_SIZE) 44 45/* 46 * To convert an address in DVMA space to a slave address, 47 * just use a logical AND with one of the following masks. 48 * To convert back, just logical OR with the base address. 49 */ 50#define DVMA_OBIO_SLAVE_BASE 0x0F000000 51#define DVMA_OBIO_SLAVE_MASK 0x00FFffff /* 16MB */ 52 53#define DVMA_VME_SLAVE_BASE 0x0FF00000 54#define DVMA_VME_SLAVE_MASK 0x000Fffff /* 1MB */ 55