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param.h revision 1.2 
      1 /*	$NetBSD: param.h,v 1.2 2001/04/10 12:24:05 fredette Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988 University of Utah.
      5  * Copyright (c) 1982, 1986, 1990, 1993
      6  *	The Regents of the University of California.  All rights reserved.
      7  *
      8  * This code is derived from software contributed to Berkeley by
      9  * the Systems Programming Group of the University of Utah Computer
     10  * Science Department.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. All advertising materials mentioning features or use of this software
     21  *    must display the following acknowledgement:
     22  *	This product includes software developed by the University of
     23  *	California, Berkeley and its contributors.
     24  * 4. Neither the name of the University nor the names of its contributors
     25  *    may be used to endorse or promote products derived from this software
     26  *    without specific prior written permission.
     27  *
     28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     38  * SUCH DAMAGE.
     39  *
     40  *	from: Utah Hdr: machparam.h 1.16 92/12/20
     41  *	from: @(#)param.h	8.1 (Berkeley) 6/10/93
     42  */
     43 
     44 #ifndef	_MACHINE_PARAM_H_
     45 #define	_MACHINE_PARAM_H_
     46 
     47 /*
     48  * Machine dependent constants for the Sun2 series.
     49  */
     50 #define	_MACHINE	sun2
     51 #define	MACHINE		"sun2"
     52 #define	_MACHINE_ARCH	m68000
     53 #define	MACHINE_ARCH	"m68000"
     54 #define	MID_MACHINE	MID_M680002K
     55 
     56 #ifdef MSGBUFSIZE
     57 #error "MSGBUFSIZE is not user-adjustable for this arch"
     58 #endif
     59 #define MSGBUFOFF	0x200
     60 #define MSGBUFSIZE	(NBPG - MSGBUFOFF)
     61 
     62 /* This is needed by ps (actually USPACE). */
     63 #define	UPAGES		(16384 / NBPG)		/* pages of u-area */
     64 
     65 #if defined(_KERNEL) || defined(_STANDALONE)
     66 
     67 #define	KERNBASE	0x00008000	/* start of kernel virtual */
     68 #define	KERNTEXTOFF	0x0000C000	/* start of kernel text */
     69 #define	KERN_END	0x00E00000	/* end of kernel virtual */
     70 
     71 #define PGSHIFT		11		/* LOG2(NBPG) */
     72 #define SEGSHIFT	15	        /* LOG2(NBSG) */
     73 #define NBSG		(1 << SEGSHIFT)	/* bytes/segment */
     74 #define	SEGOFSET	(NBSG-1)	/* byte offset into segment */
     75 
     76 #define	MAXBSIZE	0x2000		/* max FS block size */
     77 
     78 /*
     79  * XXX fredette - we force a small number of mbuf clusters and cluster
     80  * size to help me debug this on my low-memory machine.  These should
     81  * go away at some point.
     82  */
     83 #define	NMBCLUSTERS	64	/* map size, max cluster allocation */
     84 #define MCLSHIFT	10
     85 
     86 /*
     87  * XXX fredette - we must define this, otw UBC consumes 8MB of kernel VM.
     88  * For now, we make it absurdly small, perhaps it can grow later.
     89  */
     90 #define	UBC_NWINS	32
     91 
     92 #endif	/* _KERNEL */
     93 
     94 #include <m68k/param.h>
     95 
     96 /*
     97  * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
     98  * logical pages.
     99  */
    100 #define	NKMEMPAGES_MIN_DEFAULT	((3 * 1024 * 1024) >> PAGE_SHIFT)
    101 #define	NKMEMPAGES_MAX_DEFAULT	((3 * 1024 * 1024) >> PAGE_SHIFT)
    102 
    103 #if defined(_KERNEL) && !defined(_LOCORE)
    104 
    105 /* XXX - Does this really belong here? -gwr */
    106 #include <machine/psl.h>
    107 
    108 extern void _delay __P((unsigned));
    109 #define delay(us)	_delay((us)<<8)
    110 #define	DELAY(n)	delay(n)
    111 
    112 #endif	/* _KERNEL && !_LOCORE */
    113 #endif	/* !_MACHINE_PARAM_H_ */
    114