105 lines
3.3 KiB
C
105 lines
3.3 KiB
C
/* $NetBSD: vmparam.h,v 1.3 2002/12/10 05:14:28 thorpej Exp $ */
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/* $OpenBSD: vmparam.h,v 1.17 2001/09/22 18:00:09 miod Exp $ */
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/*
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* Copyright (c) 1988-1994, The University of Utah and
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* the Computer Systems Laboratory at the University of Utah (CSL).
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* All rights reserved.
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*
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* Permission to use, copy, modify and distribute this software is hereby
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* granted provided that (1) source code retains these copyright, permission,
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* and disclaimer notices, and (2) redistributions including binaries
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* reproduce the notices in supporting documentation, and (3) all advertising
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* materials mentioning features or use of this software display the following
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* acknowledgement: ``This product includes software developed by the
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* Computer Systems Laboratory at the University of Utah.''
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*
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* THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
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* IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
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* ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* CSL requests users of this software to return to csl-dist@cs.utah.edu any
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* improvements that they make and grant CSL redistribution rights.
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*
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* Utah $Hdr: vmparam.h 1.16 94/12/16$
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*/
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#ifndef _HPPA_VMPARAM_H_
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#define _HPPA_VMPARAM_H_
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/*
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* Machine dependent constants for HP PA
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*/
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/*
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* USRSTACK is the top (end) of the user stack.
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*/
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#define USRSTACK 0x68FF3000 /* Start of user stack */
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#define SYSCALLGATE 0xC0000000 /* syscall gateway page */
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/* Alignment requirement for a uspace. */
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#define USPACE_ALIGN NBPG
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/*
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* Virtual memory related constants, all in bytes
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*/
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#ifndef MAXTSIZ
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#define MAXTSIZ (0x40000000) /* max text size */
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#endif
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#ifndef DFLDSIZ
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#define DFLDSIZ (16*1024*1024) /* initial data size limit */
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#endif
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#ifndef MAXDSIZ
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#define MAXDSIZ (USRSTACK-MAXTSIZ) /* max data size */
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#endif
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#ifndef DFLSSIZ
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#define DFLSSIZ (512*1024) /* initial stack size limit */
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#endif
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#ifndef MAXSSIZ
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#define MAXSSIZ (UADDR-USRSTACK) /* max stack size */
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#endif
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#ifndef USRIOSIZE
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#define USRIOSIZE ((2*HPPA_PGALIAS)/PAGE_SIZE) /* 2mb */
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#endif
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/*
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* PTEs for system V style shared memory.
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* This is basically slop for kmempt which we actually allocate (malloc) from.
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*/
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#ifndef SHMMAXPGS
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#define SHMMAXPGS ((1024*1024*10)/NBPG) /* 10mb */
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#endif
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/*
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* The time for a process to be blocked before being very swappable.
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* This is a number of seconds which the system takes as being a non-trivial
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* amount of real time. You probably shouldn't change this;
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* it is used in subtle ways (fractions and multiples of it are, that is, like
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* half of a ``long time'', almost a long time, etc.)
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* It is related to human patience and other factors which don't really
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* change over time.
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*/
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#define MAXSLP 20
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/* user/kernel map constants */
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#define VM_MIN_ADDRESS ((vaddr_t)0)
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#define VM_MAXUSER_ADDRESS ((vaddr_t)0xc0000000)
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#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
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#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0)
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#define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0xf0000000)
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/* virtual sizes (bytes) for various kernel submaps */
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#define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE)
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#define VM_PHYSSEG_MAX 8 /* this many physmem segments */
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#define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST
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#define VM_PHYSSEG_NOADD /* XXX until uvm code is fixed */
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#define VM_NFREELIST 1
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#define VM_FREELIST_DEFAULT 0
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#endif /* _HPPA_VMPARAM_H_ */
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