Annotation of sys/arch/vax/include/vmparam.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: vmparam.h,v 1.28 2007/04/22 10:05:51 miod Exp $ */
! 2: /* $NetBSD: vmparam.h,v 1.32 2000/03/07 00:05:59 matt Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1990 The Regents of the University of California.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to Berkeley by
! 9: * William Jolitz.
! 10: *
! 11: * Slightly modified for the VAX port /IC
! 12: *
! 13: * Redistribution and use in source and binary forms, with or without
! 14: * modification, are permitted provided that the following conditions
! 15: * are met:
! 16: * 1. Redistributions of source code must retain the above copyright
! 17: * notice, this list of conditions and the following disclaimer.
! 18: * 2. Redistributions in binary form must reproduce the above copyright
! 19: * notice, this list of conditions and the following disclaimer in the
! 20: * documentation and/or other materials provided with the distribution.
! 21: * 3. Neither the name of the University nor the names of its contributors
! 22: * may be used to endorse or promote products derived from this software
! 23: * without specific prior written permission.
! 24: *
! 25: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 26: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 27: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 28: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 29: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 30: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 31: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 32: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 33: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 34: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 35: * SUCH DAMAGE.
! 36: *
! 37: * @(#)vmparam.h 5.9 (Berkeley) 5/12/91
! 38: */
! 39: #ifndef _VMPARAM_H_
! 40: #define _VMPARAM_H_
! 41:
! 42: /*
! 43: * Machine dependent constants for VAX.
! 44: */
! 45:
! 46: /*
! 47: * USRTEXT is the start of the user text/data space, while USRSTACK
! 48: * is the top (end) of the user stack. Immediately above the user stack
! 49: * resides kernel.
! 50: *
! 51: */
! 52:
! 53: #define USRTEXT NBPG
! 54: #define USRSTACK KERNBASE
! 55:
! 56: /*
! 57: * Virtual memory related constants, all in bytes
! 58: */
! 59:
! 60: #ifndef MAXTSIZ
! 61: #define MAXTSIZ (8*1024*1024) /* max text size */
! 62: #endif
! 63: #ifndef MAXDSIZ
! 64: #define MAXDSIZ (32*1024*1024) /* max data size */
! 65: #endif
! 66: #ifndef MAXSSIZ
! 67: #define MAXSSIZ (8*1024*1024) /* max stack size */
! 68: #endif
! 69: #ifndef DFLDSIZ
! 70: #define DFLDSIZ (4*1024*1024) /* initial data size limit */
! 71: #endif
! 72: #ifndef DFLSSIZ
! 73: #define DFLSSIZ (512*1024) /* initial stack size limit */
! 74: #endif
! 75:
! 76: #define STACKGAP_RANDOM 32*1024
! 77:
! 78: #define BRKSIZ (8*1024*1024)
! 79:
! 80: /*
! 81: * Size of shared memory map
! 82: */
! 83:
! 84: #ifndef SHMMAXPGS
! 85: #define SHMMAXPGS 64 /* XXXX should be 1024 */
! 86: #endif
! 87:
! 88: #define VM_PHYSSEG_MAX 1
! 89: #define VM_PHYSSEG_NOADD
! 90: #define VM_PHYSSEG_STRAT VM_PSTRAT_RANDOM
! 91:
! 92: #define VM_NFREELIST 1
! 93: #define VM_FREELIST_DEFAULT 0
! 94:
! 95: /* MD round macros */
! 96: #define vax_round_page(x) (((vaddr_t)(x) + VAX_PGOFSET) & ~VAX_PGOFSET)
! 97: #define vax_trunc_page(x) ((vaddr_t)(x) & ~VAX_PGOFSET)
! 98:
! 99: /* user/kernel map constants */
! 100: #define VM_MIN_ADDRESS ((vaddr_t)0)
! 101: #define VM_MAXUSER_ADDRESS ((vaddr_t)KERNBASE)
! 102: #define VM_MAX_ADDRESS ((vaddr_t)KERNBASE)
! 103: #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)KERNBASE)
! 104: #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)(0xC0000000))
! 105:
! 106: #define USRIOSIZE (8 * VAX_NPTEPG) /* 512MB */
! 107: #define VM_PHYS_SIZE (USRIOSIZE*VAX_NBPG)
! 108:
! 109: /*
! 110: * This should be in <machine/pmap.h>, but needs to be in this file
! 111: * due to include ordering issues.
! 112: */
! 113: #define __HAVE_VM_PAGE_MD
! 114:
! 115: struct vm_page_md {
! 116: struct pv_entry *pv_head;
! 117: int pv_attr; /* write/modified bits */
! 118: };
! 119:
! 120: #define VM_MDPAGE_INIT(pg) \
! 121: do { \
! 122: (pg)->mdpage.pv_head = NULL; \
! 123: (pg)->mdpage.pv_attr = 0; \
! 124: } while (0)
! 125:
! 126: #endif
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