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dvma3.h revision 1.10.104.1 
      1  1.10.104.1      mjf /*	$NetBSD: dvma3.h,v 1.10.104.1 2008/06/02 13:22:46 mjf Exp $	*/
      2         1.1      gwr 
      3         1.4      gwr /*-
      4         1.4      gwr  * Copyright (c) 1996 The NetBSD Foundation, Inc.
      5         1.1      gwr  * All rights reserved.
      6         1.1      gwr  *
      7         1.4      gwr  * This code is derived from software contributed to The NetBSD Foundation
      8         1.4      gwr  * by Gordon W. Ross.
      9         1.4      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         1.4      gwr  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20         1.4      gwr  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21         1.4      gwr  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22         1.6      gwr  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23         1.6      gwr  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24         1.4      gwr  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25         1.4      gwr  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26         1.4      gwr  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27         1.4      gwr  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28         1.4      gwr  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29         1.4      gwr  * POSSIBILITY OF SUCH DAMAGE.
     30         1.1      gwr  */
     31         1.1      gwr 
     32         1.1      gwr /*
     33         1.9      gwr  * DVMA (SUN3 specific)
     34         1.1      gwr  *
     35         1.1      gwr  * Note that while the DVMA harware makes the last 1MB visible
     36         1.1      gwr  * for secondary masters, the PROM "owns" the last page of it.
     37         1.1      gwr  * Also note that OBIO devices can actually see the last 16MB
     38         1.1      gwr  * of kernel virtual space.  That can be mostly ignored, except
     39         1.1      gwr  * when calculating the alias address for slave access.
     40         1.1      gwr  */
     41         1.8      gwr #define DVMA_MAP_BASE	0x0FF00000
     42         1.8      gwr #define DVMA_MAP_SIZE	0x00100000
     43        1.10  thorpej #define DVMA_MAP_AVAIL	(DVMA_MAP_SIZE-PAGE_SIZE)
     44         1.1      gwr 
     45         1.1      gwr /*
     46         1.1      gwr  * To convert an address in DVMA space to a slave address,
     47         1.1      gwr  * just use a logical AND with one of the following masks.
     48         1.3      gwr  * To convert back, just logical OR with the base address.
     49         1.1      gwr  */
     50         1.8      gwr #define DVMA_OBIO_SLAVE_BASE	0x0F000000
     51         1.8      gwr #define DVMA_OBIO_SLAVE_MASK	0x00FFffff	/* 16MB */
     52         1.1      gwr 
     53         1.8      gwr #define DVMA_VME_SLAVE_BASE 	0x0FF00000
     54         1.8      gwr #define DVMA_VME_SLAVE_MASK 	0x000Fffff	/*  1MB */
     55