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/* $OpenBSD: vmparam.h,v 1.33 2021/08/03 04:45:54 semarie Exp $ */
/* $NetBSD: vmparam.h,v 1.18 2001/05/01 02:19:19 thorpej 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. 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
*/
/*
* Machine dependent constants for sun4u and sun4v UltraSPARC
*/
#ifndef VMPARAM_H
#define VMPARAM_H
#define USRSTACK 0xffffffffffffe000L
/*
* Virtual memory related constants, all in bytes
*/
/*
* Since the compiler generates `call' instructions we can't
* have more than 4GB in a single text segment.
*
* And since we only have a 40-bit address space, allow half
* of that for data and the other half for stack.
*/
#ifndef MAXTSIZ
#define MAXTSIZ (1L*1024*1024*1024) /* max text size */
#endif
#ifndef DFLDSIZ
#define DFLDSIZ (128L*1024*1024) /* initial data size limit */
#endif
#ifndef MAXDSIZ
#define MAXDSIZ (8L*1024*1024*1024) /* max data size */
#endif
#ifndef BRKSIZ
#define BRKSIZ MAXDSIZ /* heap gap size */
#endif
#ifndef DFLSSIZ
#define DFLSSIZ (2L*1024*1024) /* initial stack size limit */
#endif
#ifndef MAXSSIZ
#define MAXSSIZ (32L*1024*1024) /* max stack size */
#endif
#define STACKGAP_RANDOM 256*1024
/*
* Size of shared memory map
*/
#ifndef SHMMAXPGS
#define SHMMAXPGS 4096 /* 32mb */
#endif
/*
* Size of User Raw I/O map
*/
#define USRIOSIZE 300
/*
* Mach derived constants
*/
/*
* User/kernel map constants.
*/
#define VM_MIN_ADDRESS ((vaddr_t)PAGE_SIZE)
#define VM_MAX_ADDRESS ((vaddr_t)-1)
#define VM_MAXUSER_ADDRESS ((vaddr_t)-PAGE_SIZE)
/* map PIE into the first quarter of the address space before hole */
#define VM_PIE_MIN_ADDR PAGE_SIZE
#define VM_PIE_MAX_ADDR 0x10000000000
#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)KERNBASE)
#define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0x000007ffffffffffL)
/* virtual sizes (bytes) for various kernel submaps */
#define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE)
#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 */
#if defined (_KERNEL) && !defined(_LOCORE)
struct vm_map;
vaddr_t dvma_mapin(struct vm_map *, vaddr_t, int, int);
void dvma_mapout(vaddr_t, vaddr_t, int);
#endif
#endif
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