vmparam.h revision 1.3
1/* $NetBSD: vmparam.h,v 1.3 2008/03/20 09:09:20 kochi 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)vmparam.h 5.9 (Berkeley) 5/12/91 35 */ 36 37#ifndef _VMPARAM_H_ 38#define _VMPARAM_H_ 39 40#include <sys/tree.h> 41 42#define USRSTACK VM_MAX_ADDRESS /* XXX: Revisit vm address space. */ 43 44/* 45 * Virtual memory related constants, all in bytes 46 */ 47#ifndef MAXTSIZ 48#define MAXTSIZ (1<<30) /* max text size (1G) */ 49#endif 50#ifndef DFLDSIZ 51#define DFLDSIZ (1<<27) /* initial data size (128M) */ 52#endif 53#ifndef MAXDSIZ 54#define MAXDSIZ (1<<30) /* max data size (1G) */ 55#endif 56#ifndef DFLSSIZ 57#define DFLSSIZ (1<<21) /* initial stack size (2M) */ 58#endif 59#ifndef MAXSSIZ 60#define MAXSSIZ (1<<28) /* max stack size (256M) */ 61#endif 62#ifndef SGROWSIZ 63#define SGROWSIZ (128UL*1024) /* amount to grow stack */ 64#endif 65 66 67 68/* 69 * PTEs for mapping user space into the kernel for phyio operations. 70 * 64 pte's are enough to cover 8 disks * MAXBSIZE. 71 */ 72#ifndef USRIOSIZE 73#define USRIOSIZE 64 74#endif 75 76/* 77 * Manipulating region bits of an address. 78 */ 79#define IA64_RR_BASE(n) (((u_int64_t) (n)) << 61) 80#define IA64_RR_MASK(x) ((x) & ((1L << 61) - 1)) 81 82#define IA64_PHYS_TO_RR6(x) ((x) | IA64_RR_BASE(6)) 83#define IA64_PHYS_TO_RR7(x) ((x) | IA64_RR_BASE(7)) 84 85#define IA64_ID_PAGE_SHIFT 28 /* 256M */ 86#define IA64_ID_PAGE_SIZE (1 << IA64_ID_PAGE_SHIFT) 87#define IA64_ID_PAGE_MASK (IA64_ID_PAGE_SIZE-1) 88 89#define IA64_BACKINGSTORE IA64_RR_BASE(4) 90 91#define PAGE_SHIFT 14 /* 16K pages by default. */ 92#define PAGE_SIZE (1 << PAGE_SHIFT) 93#define PAGE_MASK (PAGE_SIZE - 1) 94 95/* user/kernel map constants */ 96#define VM_MIN_ADDRESS ((vaddr_t)0) 97#define VM_MAX_ADDRESS ((vaddr_t) IA64_RR_BASE(5)) 98#define VM_GATEWAY_SIZE PAGE_SIZE 99#define VM_MAXUSER_ADDRESS (VM_MAX_ADDRESS + VM_GATEWAY_SIZE) 100#define VM_MIN_KERNEL_ADDRESS VM_MAXUSER_ADDRESS 101#define VM_MAX_KERNEL_ADDRESS ((vaddr_t) (IA64_RR_BASE(6) - 1)) 102 103#define VM_PHYSSEG_MAX 16 /* XXX: */ 104#define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 105#define VM_PHYSSEG_NOADD /* no more after vm_mem_init */ 106 107#define VM_NFREELIST 1 /* XXX: */ 108#define VM_FREELIST_DEFAULT 0 /* XXX: */ 109 110/* virtual sizes (bytes) for various kernel submaps */ 111#define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 112 113#ifndef _LOCORE 114 115#include <sys/mutex.h> 116/* 117 * pmap-specific data store in the vm_page structure. 118 */ 119#define __HAVE_VM_PAGE_MD 120struct vm_page_md { 121 TAILQ_HEAD(,pv_entry) pv_list; /* pv_entry list */ 122 int pv_list_count; 123 kmutex_t pv_mutex; /* lock on this head */ 124 int pvh_attrs; /* page attributes */ 125}; 126 127#define VM_MDPAGE_INIT(pg) \ 128do { \ 129 TAILQ_INIT(&(pg)->mdpage.pv_list); \ 130 mutex_init(&(pg)->mdpage.pv_mutex, MUTEX_SPIN, IPL_NONE); \ 131} while (/*CONSTCOND*/0) 132#endif /*_LOCORE*/ 133 134#endif /* _VMPARAM_H_ */ 135