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param.h revision 1.12 
      1 /*	$NetBSD: param.h,v 1.12 1999/05/05 13:46:20 minoura 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  *
     42  *	@(#)param.h	8.1 (Berkeley) 6/10/93
     43  */
     44 
     45 #ifndef	_MACHINE_PARAM_H_
     46 #define	_MACHINE_PARAM_H_
     47 
     48 /*
     49  * Machine dependent constants for x68k
     50  */
     51 #define	_MACHINE	x68k
     52 #define	MACHINE		"x68k"
     53 
     54 /*
     55  * Interrupt glue.
     56  */
     57 #include <machine/intr.h>
     58 
     59 #define	PGSHIFT		12		/* LOG2(NBPG) */
     60 #define	KERNBASE	0x00000000	/* start of kernel virtual */
     61 
     62 #define	SEGSHIFT	22		/* LOG2(NBSEG) */
     63 #define NBSEG		(1 << SEGSHIFT)	/* bytes/segment */
     64 #define	SEGOFSET	(NBSEG-1)	/* byte offset into segment */
     65 
     66 #define	UPAGES		3		/* pages of u-area */
     67 
     68 #include <m68k/param.h>
     69 
     70 #define	NPTEPG		(NBPG/(sizeof (pt_entry_t)))
     71 
     72 #ifndef MSGBUFSIZE
     73 #define MSGBUFSIZE	NBPG		/* default message buffer size */
     74 #endif
     75 
     76 /*
     77  * Size of kernel malloc arena in CLBYTES-sized logical pages
     78  */
     79 #ifndef NKMEMCLUSTERS
     80 # define	NKMEMCLUSTERS	(2048 * 1024 / CLBYTES)
     81 #endif
     82 
     83 
     84 #if defined(_KERNEL) && !defined(_LOCORE)
     85 #define	delay(us)	_delay((us) << 8)
     86 #define DELAY(us)	delay(us)
     87 
     88 void	_delay __P((u_int));
     89 #endif /* _KERNEL && !_LOCORE */
     90 
     91 #if defined(_KERNEL) && !defined(_LKM)
     92 #include "opt_compat_hpux.h"
     93 #endif
     94 
     95 #ifdef COMPAT_HPUX
     96 /*
     97  * Constants/macros for HPUX multiple mapping of user address space.
     98  * Pages in the first 256Mb are mapped in at every 256Mb segment.
     99  */
    100 #define HPMMMASK	0xF0000000
    101 #define ISHPMMADDR(v) \
    102 	((curproc->p_md.md_flags & MDP_HPUXMMAP) && \
    103 	 ((unsigned)(v) & HPMMMASK) && \
    104 	 ((unsigned)(v) & HPMMMASK) != HPMMMASK)
    105 #define HPMMBASEADDR(v) \
    106 	((unsigned)(v) & ~HPMMMASK)
    107 #endif
    108 
    109 #endif	/* !_MACHINE_PARAM_H_ */
    110