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vmparam.h revision 1.21.12.1
      1  1.21.12.1   thorpej /*	$NetBSD: vmparam.h,v 1.21.12.1 2021/04/03 22:28:27 thorpej Exp $	*/
      2        1.1  fredette 
      3       1.14     skrll /*	$OpenBSD: vmparam.h,v 1.33 2006/06/04 17:21:24 miod Exp $	*/
      4        1.1  fredette 
      5       1.21     skrll /*
      6        1.1  fredette  * Copyright (c) 1988-1994, The University of Utah and
      7        1.1  fredette  * the Computer Systems Laboratory at the University of Utah (CSL).
      8        1.1  fredette  * All rights reserved.
      9        1.1  fredette  *
     10        1.1  fredette  * Permission to use, copy, modify and distribute this software is hereby
     11        1.1  fredette  * granted provided that (1) source code retains these copyright, permission,
     12        1.1  fredette  * and disclaimer notices, and (2) redistributions including binaries
     13        1.1  fredette  * reproduce the notices in supporting documentation, and (3) all advertising
     14        1.1  fredette  * materials mentioning features or use of this software display the following
     15        1.1  fredette  * acknowledgement: ``This product includes software developed by the
     16        1.1  fredette  * Computer Systems Laboratory at the University of Utah.''
     17        1.1  fredette  *
     18        1.1  fredette  * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
     19        1.1  fredette  * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
     20        1.1  fredette  * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     21        1.1  fredette  *
     22        1.1  fredette  * CSL requests users of this software to return to csl-dist (at) cs.utah.edu any
     23        1.1  fredette  * improvements that they make and grant CSL redistribution rights.
     24        1.1  fredette  *
     25        1.1  fredette  * 	Utah $Hdr: vmparam.h 1.16 94/12/16$
     26        1.1  fredette  */
     27        1.1  fredette 
     28        1.1  fredette #ifndef _HPPA_VMPARAM_H_
     29        1.1  fredette #define _HPPA_VMPARAM_H_
     30        1.1  fredette 
     31       1.20       chs #define __USE_TOPDOWN_VM
     32       1.20       chs 
     33        1.1  fredette /*
     34        1.1  fredette  * Machine dependent constants for HP PA
     35        1.1  fredette  */
     36        1.4   thorpej 
     37        1.4   thorpej /*
     38        1.8     skrll  * We use 4K pages on the HP PA.  Override the PAGE_* definitions
     39        1.4   thorpej  * to be compile-time constants.
     40        1.4   thorpej  */
     41        1.4   thorpej #define	PAGE_SHIFT	12
     42        1.4   thorpej #define	PAGE_SIZE	(1 << PAGE_SHIFT)
     43        1.4   thorpej #define	PAGE_MASK	(PAGE_SIZE - 1)
     44        1.4   thorpej 
     45        1.1  fredette /*
     46        1.9     skrll  * USRSTACK is the bottom (start) of the user stack.
     47        1.1  fredette  */
     48       1.20       chs #define	USRSTACK	(VM_MAXUSER_ADDRESS - MAXSSIZ) /* Start of user stack */
     49       1.20       chs #define	SYSCALLGATE	0xc0000000		/* syscall gateway page */
     50        1.1  fredette 
     51        1.1  fredette /*
     52        1.1  fredette  * Virtual memory related constants, all in bytes
     53        1.1  fredette  */
     54        1.1  fredette #ifndef MAXTSIZ
     55  1.21.12.1   thorpej #define	MAXTSIZ		(1024*1024*1024)		/* max text size */
     56        1.1  fredette #endif
     57        1.1  fredette #ifndef DFLDSIZ
     58        1.1  fredette #define	DFLDSIZ		(16*1024*1024)		/* initial data size limit */
     59        1.1  fredette #endif
     60        1.1  fredette #ifndef MAXDSIZ
     61        1.1  fredette #define	MAXDSIZ		(USRSTACK-MAXTSIZ)	/* max data size */
     62        1.1  fredette #endif
     63        1.1  fredette #ifndef	DFLSSIZ
     64       1.10     skrll #define	DFLSSIZ		(2*1024*1024)		/* initial stack size limit */
     65        1.1  fredette #endif
     66        1.1  fredette #ifndef	MAXSSIZ
     67       1.11     skrll #define	MAXSSIZ		(256*1024*1024)		/* max stack size */
     68        1.1  fredette #endif
     69        1.1  fredette 
     70        1.1  fredette #ifndef USRIOSIZE
     71        1.1  fredette #define	USRIOSIZE	((2*HPPA_PGALIAS)/PAGE_SIZE)	/* 2mb */
     72        1.1  fredette #endif
     73        1.1  fredette 
     74        1.1  fredette /*
     75        1.1  fredette  * The time for a process to be blocked before being very swappable.
     76        1.1  fredette  * This is a number of seconds which the system takes as being a non-trivial
     77        1.1  fredette  * amount of real time.  You probably shouldn't change this;
     78        1.1  fredette  * it is used in subtle ways (fractions and multiples of it are, that is, like
     79        1.1  fredette  * half of a ``long time'', almost a long time, etc.)
     80        1.1  fredette  * It is related to human patience and other factors which don't really
     81        1.1  fredette  * change over time.
     82        1.1  fredette  */
     83       1.14     skrll /* XXXNH - remove??? */
     84        1.1  fredette #define	MAXSLP 		20
     85        1.1  fredette 
     86        1.1  fredette /* user/kernel map constants */
     87        1.1  fredette #define	VM_MIN_ADDRESS		((vaddr_t)0)
     88        1.1  fredette #define	VM_MAXUSER_ADDRESS	((vaddr_t)0xc0000000)
     89        1.1  fredette #define	VM_MAX_ADDRESS		VM_MAXUSER_ADDRESS
     90       1.14     skrll 
     91       1.14     skrll #define	VM_MIN_KERNEL_ADDRESS	((vaddr_t)0xc0001000)
     92       1.14     skrll #define	VM_MAX_KERNEL_ADDRESS	((vaddr_t)0xef000000)
     93        1.1  fredette 
     94        1.1  fredette /* virtual sizes (bytes) for various kernel submaps */
     95        1.1  fredette #define VM_PHYS_SIZE		(USRIOSIZE*PAGE_SIZE)
     96        1.1  fredette 
     97        1.1  fredette #define	VM_PHYSSEG_MAX	8	/* this many physmem segments */
     98        1.1  fredette #define	VM_PHYSSEG_STRAT	VM_PSTRAT_BIGFIRST
     99        1.1  fredette 
    100       1.15     skrll #define	VM_NFREELIST		2
    101        1.1  fredette #define	VM_FREELIST_DEFAULT	0
    102       1.15     skrll #define	VM_FREELIST_ISADMA	1
    103        1.1  fredette 
    104        1.1  fredette #endif	/* _HPPA_VMPARAM_H_ */
    105