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vmparam.h revision 1.3 
      1 /*	$NetBSD: vmparam.h,v 1.3 2000/12/30 07:10:21 tsutsui Exp $	*/
      2 
      3 /*-
      4  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
      5  * Copyright (C) 1995, 1996 TooLs GmbH.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by TooLs GmbH.
     19  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     27  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     28  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #ifndef	_MACHINE_VMPARAM_H_
     35 #define	_MACHINE_VMPARAM_H_
     36 
     37 #define	USRTEXT		NBPG
     38 #define	USRSTACK	VM_MAXUSER_ADDRESS
     39 
     40 #ifndef	MAXTSIZ
     41 #define	MAXTSIZ		(16*1024*1024)		/* max text size */
     42 #endif
     43 
     44 #ifndef	DFLDSIZ
     45 #define	DFLDSIZ		(32*1024*1024)		/* default data size */
     46 #endif
     47 
     48 #ifndef	MAXDSIZ
     49 #define	MAXDSIZ		(512*1024*1024)		/* max data size */
     50 #endif
     51 
     52 #ifndef	DFLSSIZ
     53 #define	DFLSSIZ		(1*1024*1024)		/* default stack size */
     54 #endif
     55 
     56 #ifndef	MAXSSIZ
     57 #define	MAXSSIZ		(32*1024*1024)		/* max stack size */
     58 #endif
     59 
     60 /*
     61  * Size of shared memory map
     62  */
     63 #ifndef	SHMMAXPGS
     64 #define	SHMMAXPGS	1024
     65 #endif
     66 
     67 /*
     68  * Size of User Raw I/O map
     69  */
     70 #define	USRIOSIZE	1024
     71 
     72 /*
     73  * The time for a process to be blocked before being very swappable.
     74  * This is a number of seconds which the system takes as being a non-trivial
     75  * amount of real time.  You probably shouldn't change this;
     76  * it is used in subtle ways (fractions and multiples of it are, that is, like
     77  * half of a ``long time'', almost a long time, etc.)
     78  * It is related to human patience and other factors which don't really
     79  * change over time.
     80  */
     81 #define	MAXSLP 		20
     82 
     83 /*
     84  * Would like to have MAX addresses = 0, but this doesn't (currently) work
     85  */
     86 #define	VM_MIN_ADDRESS		((vaddr_t)0)
     87 #define	VM_MAXUSER_ADDRESS	((vaddr_t)0xfffff000)
     88 #define	VM_MAX_ADDRESS		VM_MAXUSER_ADDRESS
     89 #define	VM_MIN_KERNEL_ADDRESS	((vaddr_t)(KERNEL_SR << ADDR_SR_SHFT))
     90 #define	VM_MAX_KERNEL_ADDRESS	(VM_MIN_KERNEL_ADDRESS + SEGMENT_LENGTH - 1)
     91 
     92 /* XXX max. amount of KVM to be used by buffers. */
     93 #ifndef VM_MAX_KERNEL_BUF
     94 #define	VM_MAX_KERNEL_BUF	(SEGMENT_LENGTH * 7 / 10)
     95 #endif
     96 
     97 /*
     98  * Override the default pager_map size, there's not enough KVA.
     99  */
    100 #define	PAGER_MAP_SIZE		(4 * 1024 * 1024)
    101 
    102 #define	VM_PHYS_SIZE		(USRIOSIZE * NBPG)
    103 
    104 struct pmap_physseg {
    105 	struct pv_entry *pvent;
    106 	char *attrs;
    107 };
    108 
    109 #define VM_PHYSSEG_MAX		32
    110 #define VM_PHYSSEG_STRAT	VM_PSTRAT_BSEARCH
    111 #define VM_PHYSSEG_NOADD		/* can't add RAM after vm_mem_init */
    112 
    113 #define VM_NFREELIST		1
    114 #define VM_FREELIST_DEFAULT	0
    115 
    116 #endif /* _MACHINE_VMPARAM_H_ */
    117