/* $NetBSD: dvma3.h,v 1.11 2008/04/28 20:23:38 martin Exp $ */ /*- * Copyright (c) 1996 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Gordon W. Ross. * * 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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. */ /* * DVMA (SUN3 specific) * * Note that while the DVMA harware makes the last 1MB visible * for secondary masters, the PROM "owns" the last page of it. * Also note that OBIO devices can actually see the last 16MB * of kernel virtual space. That can be mostly ignored, except * when calculating the alias address for slave access. */ #define DVMA_MAP_BASE 0x0FF00000 #define DVMA_MAP_SIZE 0x00100000 #define DVMA_MAP_AVAIL (DVMA_MAP_SIZE-PAGE_SIZE) /* * To convert an address in DVMA space to a slave address, * just use a logical AND with one of the following masks. * To convert back, just logical OR with the base address. */ #define DVMA_OBIO_SLAVE_BASE 0x0F000000 #define DVMA_OBIO_SLAVE_MASK 0x00FFffff /* 16MB */ #define DVMA_VME_SLAVE_BASE 0x0FF00000 #define DVMA_VME_SLAVE_MASK 0x000Fffff /* 1MB */ |