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      1  1.8   andvar /*	$NetBSD: dvma3x.h,v 1.8 2024/07/20 20:36:33 andvar Exp $	*/
      2  1.1      gwr 
      3  1.1      gwr /*-
      4  1.1      gwr  * Copyright (c) 1996 The NetBSD Foundation, Inc.
      5  1.1      gwr  * All rights reserved.
      6  1.1      gwr  *
      7  1.1      gwr  * This code is derived from software contributed to The NetBSD Foundation
      8  1.1      gwr  * by Gordon W. Ross.
      9  1.1      gwr  *
     10  1.1      gwr  * Redistribution and use in source and binary forms, with or without
     11  1.1      gwr  * modification, are permitted provided that the following conditions
     12  1.1      gwr  * are met:
     13  1.1      gwr  * 1. Redistributions of source code must retain the above copyright
     14  1.1      gwr  *    notice, this list of conditions and the following disclaimer.
     15  1.1      gwr  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.1      gwr  *    notice, this list of conditions and the following disclaimer in the
     17  1.1      gwr  *    documentation and/or other materials provided with the distribution.
     18  1.1      gwr  *
     19  1.1      gwr  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  1.1      gwr  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  1.1      gwr  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  1.1      gwr  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  1.1      gwr  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  1.1      gwr  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  1.1      gwr  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  1.1      gwr  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  1.1      gwr  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  1.1      gwr  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  1.1      gwr  * POSSIBILITY OF SUCH DAMAGE.
     30  1.1      gwr  */
     31  1.1      gwr 
     32  1.1      gwr /*
     33  1.5      gwr  * DVMA (SUN3X specific)
     34  1.1      gwr  *
     35  1.1      gwr  * (Most of the comments pertaining to the sun3x DVMA are now
     36  1.5      gwr  *  in sun3x/dvma.c)
     37  1.1      gwr  *
     38  1.8   andvar  * Note that while the DVMA hardware makes the last 1MB visible
     39  1.4      gwr  * for secondary masters, the PROM "owns" the last page of it.
     40  1.4      gwr  * Also note that OBIO devices can actually see the last 16MB
     41  1.4      gwr  * of kernel virtual space.  That can be mostly ignored, except
     42  1.4      gwr  * when calculating the alias address for slave access.
     43  1.1      gwr  */
     44  1.4      gwr #define DVMA_MAP_BASE	0xFFF00000
     45  1.4      gwr #define DVMA_MAP_SIZE	0x00100000
     46  1.6  thorpej #define DVMA_MAP_AVAIL	(DVMA_MAP_SIZE-PAGE_SIZE)
     47  1.1      gwr 
     48  1.1      gwr /*
     49  1.1      gwr  * To convert an address in DVMA space to a slave address,
     50  1.1      gwr  * just use a logical AND with one of the following masks.
     51  1.1      gwr  * To convert back, just logical OR with the base address.
     52  1.1      gwr  */
     53  1.4      gwr #define DVMA_OBIO_SLAVE_BASE	0xFF000000
     54  1.4      gwr #define DVMA_OBIO_SLAVE_MASK	0x00FFffff	/* 16MB */
     55  1.2      gwr 
     56  1.4      gwr #define DVMA_VME_SLAVE_BASE 	0xFFF00000
     57  1.4      gwr #define DVMA_VME_SLAVE_MASK 	0x000Fffff	/*  1MB */
     58