/*-
* 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 (SUN3X specific)
*
* (Most of the comments pertaining to the sun3x DVMA are now
* in sun3x/dvma.c)
*
* Note that while the DVMA hardware 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 0xFFF00000
#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 0xFF000000
#define DVMA_OBIO_SLAVE_MASK 0x00FFffff /* 16MB */
