154 lines
4.5 KiB
C
154 lines
4.5 KiB
C
/*-
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* Copyright (C) 1995, 1996 TooLs GmbH.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $NetBSD: vmparam.h,v 1.11 2000/02/11 19:25:16 thorpej Exp $
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* $FreeBSD$
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*/
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#ifndef _MACHINE_VMPARAM_H_
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#define _MACHINE_VMPARAM_H_
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#define USRSTACK VM_MAXUSER_ADDRESS
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#ifndef MAXTSIZ
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#define MAXTSIZ (16*1024*1024) /* max text size */
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#endif
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#ifndef DFLDSIZ
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#define DFLDSIZ (32*1024*1024) /* default data size */
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#endif
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#ifndef MAXDSIZ
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#define MAXDSIZ (512*1024*1024) /* max data size */
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#endif
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#ifndef DFLSSIZ
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#define DFLSSIZ (1*1024*1024) /* default stack size */
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#endif
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#ifndef MAXSSIZ
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#define MAXSSIZ (32*1024*1024) /* max stack size */
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#endif
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/*
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* Size of shared memory map
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*/
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#ifndef SHMMAXPGS
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#define SHMMAXPGS 1024
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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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/*
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* Use the direct-mapped BAT registers for UMA small allocs. This
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* takes pressure off the small amount of available KVA.
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*/
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#define UMA_MD_SMALL_ALLOC
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/*
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* Would like to have MAX addresses = 0, but this doesn't (currently) work
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*/
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#define VM_MIN_ADDRESS ((vm_offset_t)0)
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#define VM_MAXUSER_ADDRESS ((vm_offset_t)0x7ffff000)
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#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
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#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)(KERNEL_SR << ADDR_SR_SHFT))
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#define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH - 1)
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#define KERNBASE 0x100000 /* start of kernel virtual */
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/* XXX max. amount of KVM to be used by buffers. */
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#ifndef VM_MAX_KERNEL_BUF
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#define VM_MAX_KERNEL_BUF (SEGMENT_LENGTH * 7 / 10)
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#endif
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struct pmap_physseg {
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struct pv_entry *pvent;
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char *attrs;
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};
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#define VM_PHYSSEG_MAX 16 /* 1? */
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/*
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* The physical address space is densely populated.
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*/
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#define VM_PHYSSEG_DENSE
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/*
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* Create three free page pools: VM_FREEPOOL_DEFAULT is the default pool
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* from which physical pages are allocated and VM_FREEPOOL_DIRECT is
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* the pool from which physical pages for small UMA objects are
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* allocated.
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*/
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#define VM_NFREEPOOL 3
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#define VM_FREEPOOL_CACHE 2
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#define VM_FREEPOOL_DEFAULT 0
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#define VM_FREEPOOL_DIRECT 1
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/*
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* Create one free page list.
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*/
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#define VM_NFREELIST 1
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#define VM_FREELIST_DEFAULT 0
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/*
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* The largest allocation size is 4MB.
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*/
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#define VM_NFREEORDER 11
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/*
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* Disable superpage reservations.
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*/
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#ifndef VM_NRESERVLEVEL
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#define VM_NRESERVLEVEL 0
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#endif
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#ifndef VM_INITIAL_PAGEIN
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#define VM_INITIAL_PAGEIN 16
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#endif
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#ifndef SGROWSIZ
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#define SGROWSIZ (128UL*1024) /* amount to grow stack */
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#endif
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#ifndef VM_KMEM_SIZE
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#define VM_KMEM_SIZE (12 * 1024 * 1024)
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#endif
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#endif /* _MACHINE_VMPARAM_H_ */
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