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Annotation of sys/arch/mac68k/include/vmparam.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: vmparam.h,v 1.16 2006/09/17 22:23:40 miod Exp $       */
                      2: /*     $NetBSD: vmparam.h,v 1.8 1996/11/15 14:21:00 briggs Exp $       */
                      3:
                      4: /*
                      5:  * Copyright (c) 1988 University of Utah.
                      6:  * Copyright (c) 1982, 1990 The Regents of the University of California.
                      7:  * All rights reserved.
                      8:  *
                      9:  * This code is derived from software contributed to Berkeley by
                     10:  * the Systems Programming Group of the University of Utah Computer
                     11:  * Science Department.
                     12:  *
                     13:  * Redistribution and use in source and binary forms, with or without
                     14:  * modification, are permitted provided that the following conditions
                     15:  * are met:
                     16:  * 1. Redistributions of source code must retain the above copyright
                     17:  *    notice, this list of conditions and the following disclaimer.
                     18:  * 2. Redistributions in binary form must reproduce the above copyright
                     19:  *    notice, this list of conditions and the following disclaimer in the
                     20:  *    documentation and/or other materials provided with the distribution.
                     21:  * 3. Neither the name of the University nor the names of its contributors
                     22:  *    may be used to endorse or promote products derived from this software
                     23:  *    without specific prior written permission.
                     24:  *
                     25:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     26:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     27:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     28:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     29:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     30:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     31:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     32:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     33:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     34:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     35:  * SUCH DAMAGE.
                     36:  */
                     37: /*-
                     38:  * Copyright (C) 1993  Allen K. Briggs, Chris P. Caputo,
                     39:  *                     Michael L. Finch, Bradley A. Grantham, and
                     40:  *                     Lawrence A. Kesteloot
                     41:  * All rights reserved.
                     42:  *
                     43:  * Redistribution and use in source and binary forms, with or without
                     44:  * modification, are permitted provided that the following conditions
                     45:  * are met:
                     46:  * 1. Redistributions of source code must retain the above copyright
                     47:  *    notice, this list of conditions and the following disclaimer.
                     48:  * 2. Redistributions in binary form must reproduce the above copyright
                     49:  *    notice, this list of conditions and the following disclaimer in the
                     50:  *    documentation and/or other materials provided with the distribution.
                     51:  * 3. All advertising materials mentioning features or use of this software
                     52:  *    must display the following acknowledgement:
                     53:  *     This product includes software developed by the Alice Group.
                     54:  * 4. The names of the Alice Group or any of its members may not be used
                     55:  *    to endorse or promote products derived from this software without
                     56:  *    specific prior written permission.
                     57:  *
                     58:  * THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``AS IS'' AND ANY EXPRESS OR
                     59:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     60:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     61:  * IN NO EVENT SHALL THE ALICE GROUP BE LIABLE FOR ANY DIRECT, INDIRECT,
                     62:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     63:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     64:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     65:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     66:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
                     67:  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     68:  *
                     69:  */
                     70: /*
                     71:  * from: Utah $Hdr: vmparam.h 1.16 91/01/18$
                     72:  *
                     73:  *     @(#)vmparam.h   7.3 (Berkeley) 5/7/91
                     74:  */
                     75:
                     76: #ifndef _MAC68K_VMPARAM_H_
                     77: #define _MAC68K_VMPARAM_H_
                     78:
                     79: /*
                     80:  * Machine dependent constants for mac68k -- mostly derived from hp300.
                     81:  */
                     82:
                     83: #include <m68k/vmparam.h>
                     84:
                     85: /*
                     86:  * Constants which control the way the VM system deals with memory segments.
                     87:  * Most mac68k systems have only 1 physical memory segment, but some have 2.
                     88:  *
                     89:  * On the systems that have multiple segments, specifically the IIsi and
                     90:  * IIci, the optimal configuration is to put the higher-density SIMMs in
                     91:  * bank B.  This is because the on-board video uses main memory in bank A
                     92:  * for the framebuffer, and a memory controller prevents access during
                     93:  * video refresh cycles.  Even if both banks contain the same amount of
                     94:  * RAM, a minimum of ~320KB will be subtracted from the amount in bank A
                     95:  * for the framebuffer (if on-board video is in use).
                     96:  */
                     97: #define        VM_PHYSSEG_MAX          8
                     98: #define        VM_PHYSSEG_STRAT        VM_PSTRAT_BIGFIRST
                     99:
                    100: #endif /* _MAC68K_VMPARAM_H_ */