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vmparam.h revision 1.1 
      1 /*	$NetBSD: vmparam.h,v 1.1 2003/04/26 18:39:49 fvdl Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1990 The Regents of the University of California.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * William Jolitz.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the University of
     21  *	California, Berkeley and its contributors.
     22  * 4. Neither the name of the University nor the names of its contributors
     23  *    may be used to endorse or promote products derived from this software
     24  *    without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36  * SUCH DAMAGE.
     37  *
     38  *	@(#)vmparam.h	5.9 (Berkeley) 5/12/91
     39  */
     40 
     41 #ifndef _VMPARAM_H_
     42 #define _VMPARAM_H_
     43 
     44 /*
     45  * Machine dependent constants for 386.
     46  */
     47 
     48 /*
     49  * Page size on the amd64 s not variable in the traditional sense.
     50  * We override the PAGE_* definitions to compile-time constants.
     51  */
     52 #define	PAGE_SHIFT	12
     53 #define	PAGE_SIZE	(1 << PAGE_SHIFT)
     54 #define	PAGE_MASK	(PAGE_SIZE - 1)
     55 
     56 /*
     57  * USRSTACK is the top (end) of the user stack. Immediately above the
     58  * user stack resides the user structure, which is UPAGES long and contains
     59  * the kernel stack.
     60  *
     61  * Immediately after the user structure is the page table map, and then
     62  * kernal address space.
     63  */
     64 #define	USRSTACK	VM_MAXUSER_ADDRESS
     65 
     66 #define USRSTACK32	VM_MAXUSER_ADDRESS32
     67 
     68 /*
     69  * Virtual memory related constants, all in bytes
     70  */
     71 #define	MAXTSIZ		(64*1024*1024)		/* max text size */
     72 #ifndef DFLDSIZ
     73 #define	DFLDSIZ		(128*1024*1024)		/* initial data size limit */
     74 #endif
     75 #ifndef MAXDSIZ
     76 #define	MAXDSIZ		(1*1024*1024*1024)	/* max data size */
     77 #endif
     78 #ifndef	DFLSSIZ
     79 #define	DFLSSIZ		(2*1024*1024)		/* initial stack size limit */
     80 #endif
     81 #ifndef	MAXSSIZ
     82 #define	MAXSSIZ		(32*1024*1024)		/* max stack size */
     83 #endif
     84 
     85 /*
     86  * Size of shared memory map
     87  */
     88 #ifndef SHMMAXPGS
     89 #define SHMMAXPGS	2048
     90 #endif
     91 
     92 /*
     93  * Size of User Raw I/O map
     94  */
     95 #define	USRIOSIZE 	300
     96 
     97 /*
     98  * Mach derived constants
     99  */
    100 
    101 /* user/kernel map constants */
    102 #define VM_MIN_ADDRESS		0
    103 #define VM_MAXUSER_ADDRESS	0x00007f7fffffc000
    104 #define VM_MAX_ADDRESS		0x00007fbfdfeff000
    105 #define VM_MIN_KERNEL_ADDRESS	0xffff800000000000
    106 #define VM_MAX_KERNEL_ADDRESS	0xffff800100000000
    107 
    108 #define VM_MAXUSER_ADDRESS32	0xffffc000
    109 
    110 /*
    111  * XXXfvdl we have plenty of KVM now, remove this.
    112  */
    113 #ifndef VM_MAX_KERNEL_BUF
    114 #define VM_MAX_KERNEL_BUF	(384 * 1024 * 1024)
    115 #endif
    116 
    117 /* virtual sizes (bytes) for various kernel submaps */
    118 #define VM_PHYS_SIZE		(USRIOSIZE*PAGE_SIZE)
    119 
    120 #define VM_PHYSSEG_MAX		5	/* 1 "hole" + 4 free lists */
    121 #define VM_PHYSSEG_STRAT	VM_PSTRAT_BIGFIRST
    122 #define VM_PHYSSEG_NOADD		/* can't add RAM after vm_mem_init */
    123 
    124 #define	VM_NFREELIST		2
    125 #define	VM_FREELIST_DEFAULT	0
    126 #define	VM_FREELIST_FIRST16	1
    127 
    128 #define __HAVE_PMAP_PHYSSEG
    129 
    130 /*
    131  * pmap specific data stored in the vm_physmem[] array
    132  */
    133 struct pmap_physseg {
    134 	struct pv_head *pvhead;		/* pv_head array */
    135 	unsigned char *attrs;		/* attrs array */
    136 };
    137 
    138 #endif /* _VMPARAM_H_ */
    139