text: /*	$NetBSD: vmparam.h,v 1.30.10.1 2002/11/30 13:19:49 he 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
   */
  
  #include <machine/param.h>
  
  /*
   * 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		(64*1024*1024)		/* max text size */
  #endif
  #ifndef DFLDSIZ
  #define	DFLDSIZ		(64*1024*1024)		/* initial data size limit */
  #endif
  #ifndef MAXDSIZ
  #define	MAXDSIZ		(256*1024*1024)		/* max data size */
  #endif
  #ifndef	DFLSSIZ
  #define	DFLSSIZ		(2*1024*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
  
  /*
   * Mach derived constants
   */
  
  /*
   * 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)KERNEND)
  
  #define VM_PHYSSEG_MAX		32       /* up to 32 segments */
  #define VM_PHYSSEG_STRAT	VM_PSTRAT_BSEARCH
  #define VM_PHYSSEG_NOADD		/* can't add RAM after vm_mem_init */
  
  #define	VM_NFREELIST		1
  #define	VM_FREELIST_DEFAULT	0
  
  #if !defined(_LKM)
  /*
   * Make the VM PAGE_* macros constants, if possible.
   */
  #if NBPG == 4096 || NBPG == 8192
  #define PAGE_SIZE	NBPG
  #define PAGE_SHIFT	PGSHIFT
  #define PAGE_MASK	(NBPG-1)
  #endif
  #endif /* _LKM */
  
  #define	__HAVE_PMAP_PHYSSEG
  
  /*
   * pmap specific data stored in the vm_physmem[] array
   */
  struct pvlist;
  struct pmap_physseg {
  	struct pvlist *pvhead;
  };
  #endif /* _SPARC_VMPARAM_H_ */
  