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/* $OpenBSD: vmparam.h,v 1.27 2002/10/28 19:30:21 art Exp $ */
/* $NetBSD: vmparam.h,v 1.13 1997/07/12 16:20:03 perry Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)vmparam.h 8.1 (Berkeley) 6/11/93
*/
#ifndef _SPARC_VMPARAM_H_
#define _SPARC_VMPARAM_H_
/*
* Machine dependent constants for Sun-4c SPARC
*/
/*
* USRTEXT is the start of the user text/data space, while USRSTACK
* is the top (end) of the user stack.
*/
#define USRTEXT 0x2000 /* Start of user text */
#define USRSTACK KERNBASE /* Start of user stack */
/*
* Virtual memory related constants, all in bytes
*/
#ifndef MAXTSIZ
#define MAXTSIZ (16*1024*1024) /* max text size */
#endif
#ifndef DFLDSIZ
#define DFLDSIZ (32*1024*1024) /* initial data size limit */
#endif
#ifndef MAXDSIZ
#define MAXDSIZ (128*1024*1024) /* max data size */
#endif
#ifndef DFLSSIZ
#define DFLSSIZ (512*1024) /* initial stack size limit */
#endif
#ifndef MAXSSIZ
#define MAXSSIZ MAXDSIZ /* max stack size */
#endif
/*
* Size of shared memory map
*/
#ifndef SHMMAXPGS
#define SHMMAXPGS 1024
#endif
/*
* The time for a process to be blocked before being very swappable.
* This is a number of seconds which the system takes as being a non-trivial
* amount of real time. You probably shouldn't change this;
* it is used in subtle ways (fractions and multiples of it are, that is, like
* half of a ``long time'', almost a long time, etc.)
* It is related to human patience and other factors which don't really
* change over time.
*/
#define MAXSLP 20
/*
* User/kernel map constants. Note that sparc/vaddrs.h defines the
* IO space virtual base, which must be the same as VM_MAX_KERNEL_ADDRESS:
* tread with care.
*/
#define VM_MIN_ADDRESS ((vaddr_t)0)
#define VM_MAX_ADDRESS ((vaddr_t)KERNBASE)
#define VM_MAXUSER_ADDRESS ((vaddr_t)KERNBASE)
#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)KERNBASE)
#define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0xfe000000)
#define VM_PHYSSEG_MAX 32 /* we only have one "hole" */
#define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH
#define VM_PHYSSEG_NOADD /* can't add RAM after vm_mem_init */
/*
* pmap specific data stored in the vm_physmem[] array
*/
/* XXX - belongs in pmap.h, but put here because of ordering issues */
struct pvlist {
struct pvlist *pv_next; /* next pvlist, if any */
struct pmap *pv_pmap; /* pmap of this va */
vaddr_t pv_va; /* virtual address */
int pv_flags; /* flags (below) */
};
#define __HAVE_VM_PAGE_MD
struct vm_page_md {
struct pvlist pv_head;
};
#define VM_MDPAGE_INIT(pg) do { \
(pg)->mdpage.pv_head.pv_next = NULL; \
(pg)->mdpage.pv_head.pv_pmap = NULL; \
(pg)->mdpage.pv_head.pv_va = 0; \
(pg)->mdpage.pv_head.pv_flags = 0; \
} while (0)
#define VM_NFREELIST 1
#define VM_FREELIST_DEFAULT 0
#if defined (_KERNEL) && !defined(_LOCORE)
struct vm_map;
#define dvma_mapin(map,va,len,canwait) dvma_mapin_space(map,va,len,canwait,0)
vaddr_t dvma_mapin_space(struct vm_map *, vaddr_t, int, int, int);
void dvma_mapout(vaddr_t, vaddr_t, int);
#endif
#endif /* _SPARC_VMPARAM_H_ */
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