145 lines
4.5 KiB
C
145 lines
4.5 KiB
C
/* $NetBSD: vmparam.h,v 1.33 2000/11/14 19:49:57 thorpej Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* William Jolitz.
|
|
*
|
|
* Slightly modified for the VAX port /IC
|
|
*
|
|
* 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 5.9 (Berkeley) 5/12/91
|
|
*/
|
|
#ifndef _VMPARAM_H_
|
|
#define _VMPARAM_H_
|
|
|
|
/*
|
|
* Machine dependent constants for VAX.
|
|
*/
|
|
|
|
/*
|
|
* We use 4K VM pages on the VAX. Override the PAGE_* definitions
|
|
* to be compile-time constants.
|
|
*/
|
|
#define PAGE_SHIFT 12
|
|
#define PAGE_SIZE (1 << PAGE_SHIFT)
|
|
#define PAGE_MASK (PAGE_SIZE - 1)
|
|
|
|
/*
|
|
* USRTEXT is the start of the user text/data space, while USRSTACK
|
|
* is the top (end) of the user stack. Immediately above the user stack
|
|
* resides kernel.
|
|
*
|
|
*/
|
|
|
|
#define USRTEXT NBPG
|
|
#define USRSTACK KERNBASE
|
|
|
|
/*
|
|
* Virtual memory related constants, all in bytes
|
|
*/
|
|
|
|
#ifndef MAXTSIZ
|
|
#define MAXTSIZ (8*1024*1024) /* max text size */
|
|
#endif
|
|
#ifndef MAXDSIZ
|
|
#define MAXDSIZ (24*1024*1024) /* max data size */
|
|
#endif
|
|
#ifndef MAXSSIZ
|
|
#define MAXSSIZ (8*1024*1024) /* max stack size */
|
|
#endif
|
|
#ifndef DFLDSIZ
|
|
#define DFLDSIZ (16*1024*1024) /* initial data size limit */
|
|
#endif
|
|
#ifndef DFLSSIZ
|
|
#define DFLSSIZ (512*1024) /* initial stack size limit */
|
|
#endif
|
|
|
|
/*
|
|
* All mmap()'ed data will be mapped above MAXDSIZ. This means that
|
|
* pte space must be allocated for (possible) mmap()'ed data.
|
|
* Note: This is just a hint, if we mmap() more than this the page
|
|
* table will be expanded. (at the cost of speed).
|
|
*/
|
|
#define MMAPSPACE (8*1024*1024)
|
|
|
|
/*
|
|
* Size of shared memory map
|
|
*/
|
|
|
|
#ifndef SHMMAXPGS
|
|
#define SHMMAXPGS 64 /* XXXX should be 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
|
|
|
|
#define VM_PHYSSEG_MAX 1
|
|
#define VM_PHYSSEG_NOADD
|
|
#define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH /* XXX */
|
|
|
|
#define VM_NFREELIST 1
|
|
#define VM_FREELIST_DEFAULT 0
|
|
|
|
struct pmap_physseg {
|
|
int dummy;
|
|
};
|
|
|
|
/* MD round macros */
|
|
#define vax_round_page(x) (((vaddr_t)(x) + VAX_PGOFSET) & ~VAX_PGOFSET)
|
|
#define vax_trunc_page(x) ((vaddr_t)(x) & ~VAX_PGOFSET)
|
|
|
|
/*
|
|
* Mach derived constants
|
|
*/
|
|
|
|
/* user/kernel map constants */
|
|
#define VM_MIN_ADDRESS ((vaddr_t)0)
|
|
#define VM_MAXUSER_ADDRESS ((vaddr_t)KERNBASE)
|
|
#define VM_MAX_ADDRESS ((vaddr_t)KERNBASE)
|
|
#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)KERNBASE)
|
|
#define VM_MAX_KERNEL_ADDRESS ((vaddr_t)(0xC0000000))
|
|
|
|
#define USRIOSIZE (8 * VAX_NPTEPG) /* 512MB */
|
|
#define VM_PHYS_SIZE (USRIOSIZE*VAX_NBPG)
|
|
|
|
#endif
|