/*      $NetBSD: vmparam.h,v 1.38 2020/02/01 19:41:50 tsutsui Exp $     */

/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/

#ifndef _SUN3_VMPARAM_H_
#define _SUN3_VMPARAM_H_ 1

#define __USE_TOPDOWN_VM

/*
* Use common m68k definitions to define PAGE_SIZE and related constants.
*/
#include <m68k/vmparam.h>

#define USRSTACK        kernbase        /* for modules */
#define USRSTACK3       KERNBASE3       /* for asm not in modules */
#define USRSTACK3X      KERNBASE3X

#ifdef  _SUN3_
#include <machine/vmparam3.h>
#endif  /* SUN3 */
#ifdef  _SUN3X_
#include <machine/vmparam3x.h>
#endif  /* SUN3X */

/* default for modules etc. */
#if !defined(_SUN3_) && !defined(_SUN3X_)
#include <machine/vmparam3.h>
#endif

/*
* PTEs for mapping user space into the kernel for phyio operations.
* The actual limitation for physio requests will be the DVMA space,
* and that is fixed by hardware design at 1MB.  We could make the
* physio map larger than that, but it would not buy us much.
*/
#ifndef USRIOSIZE
#define USRIOSIZE       128             /* 1 MB */
#endif

/* This is needed by some LKMs. */
#define VM_PHYSSEG_MAX          4

/*
* Mach-derived constants:
*/

/* user/kernel map constants */
#define VM_MIN_ADDRESS          ((vaddr_t)0)
#define VM_MAX_ADDRESS          kernbase
#define VM_MAXUSER_ADDRESS      kernbase
#define VM_MIN_KERNEL_ADDRESS   kernbase
#define VM_MAX_KERNEL_ADDRESS   kern_end

/* virtual sizes (bytes) for various kernel submaps */
#define VM_PHYS_SIZE            (USRIOSIZE*PAGE_SIZE)

#define VM_PHYSSEG_STRAT        VM_PSTRAT_BSEARCH

#define VM_NFREELIST            1
#define VM_FREELIST_DEFAULT     0

#endif  /* _SUN3_VMPARAM_H_ */