Home | History | Annotate | Line # | Download | only in include 
      1  1.12   andvar /*	$NetBSD: dvma3.h,v 1.12 2024/07/20 20:36:33 andvar 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  1.12   andvar  * Note that while the DVMA hardware 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