1 /* 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)vm.h 8.2 (Berkeley) 12/13/93 34 * @(#)vm_prot.h 8.1 (Berkeley) 6/11/93 35 * @(#)vm_inherit.h 8.1 (Berkeley) 6/11/93 36 * 37 * Copyright (c) 1987, 1990 Carnegie-Mellon University. 38 * All rights reserved. 39 * 40 * Authors: Avadis Tevanian, Jr., Michael Wayne Young 41 * 42 * Permission to use, copy, modify and distribute this software and 43 * its documentation is hereby granted, provided that both the copyright 44 * notice and this permission notice appear in all copies of the 45 * software, derivative works or modified versions, and any portions 46 * thereof, and that both notices appear in supporting documentation. 47 * 48 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 49 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 50 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 51 * 52 * Carnegie Mellon requests users of this software to return to 53 * 54 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 55 * School of Computer Science 56 * Carnegie Mellon University 57 * Pittsburgh PA 15213-3890 58 * 59 * any improvements or extensions that they make and grant Carnegie the 60 * rights to redistribute these changes. 61 * 62 * $FreeBSD: src/sys/vm/vm.h,v 1.16.2.1 2002/12/28 19:49:41 dillon Exp $ 63 */ 64 65 #ifndef _VM_VM_H_ 66 #define _VM_VM_H_ 67 68 #ifndef _SYS_TYPES_H_ 69 #include <sys/types.h> 70 #endif 71 #include <machine/specialreg.h> 72 73 typedef char vm_inherit_t; /* inheritance codes */ 74 75 #define VM_INHERIT_SHARE ((vm_inherit_t) 0) 76 #define VM_INHERIT_COPY ((vm_inherit_t) 1) 77 #define VM_INHERIT_NONE ((vm_inherit_t) 2) 78 #define VM_INHERIT_DEFAULT VM_INHERIT_COPY 79 80 typedef u_char vm_prot_t; /* protection codes */ 81 82 #define VM_PROT_NONE ((vm_prot_t) 0x00) 83 #define VM_PROT_READ ((vm_prot_t) 0x01) 84 #define VM_PROT_WRITE ((vm_prot_t) 0x02) 85 #define VM_PROT_EXECUTE ((vm_prot_t) 0x04) 86 #define VM_PROT_OVERRIDE_WRITE ((vm_prot_t) 0x08) /* copy-on-write */ 87 #define VM_PROT_NOSYNC ((vm_prot_t) 0x10) 88 89 #define VM_PROT_RW (VM_PROT_READ|VM_PROT_WRITE) 90 #define VM_PROT_ALL (VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE) 91 #define VM_PROT_DEFAULT VM_PROT_ALL 92 93 typedef u_char vm_maptype_t; /* type of vm_map_entry */ 94 95 /* 96 * NOTE: UKSMAPs are unmanaged. The underlying kernel memory must not be 97 * freed until all related mappings are gone. There is no object. 98 * The device can map different things for the same UKS mapping even 99 * when inherited via fork(). 100 */ 101 #define VM_MAPTYPE_UNSPECIFIED 0 102 #define VM_MAPTYPE_NORMAL 1 103 #define VM_MAPTYPE_VPAGETABLE 2 104 #define VM_MAPTYPE_SUBMAP 3 105 #define VM_MAPTYPE_UKSMAP 4 /* user-kernel shared memory */ 106 107 union vm_map_object; 108 typedef union vm_map_object vm_map_object_t; 109 110 struct vm_map_entry; 111 typedef struct vm_map_entry *vm_map_entry_t; 112 113 struct vm_map; 114 typedef struct vm_map *vm_map_t; 115 116 struct vm_object; 117 typedef struct vm_object *vm_object_t; 118 119 /* 120 * This is also defined in vm/vm_page.h. 121 */ 122 #ifndef __VM_PAGE_T_DEFINED__ 123 #define __VM_PAGE_T_DEFINED__ 124 struct vm_page; 125 typedef struct vm_page *vm_page_t; 126 #endif 127 128 129 /* Memory attributes. */ 130 131 #ifndef __VM_MEMATTR_T_DEFINED__ 132 #define __VM_MEMATTR_T_DEFINED__ 133 typedef char vm_memattr_t; 134 #endif 135 136 #define VM_MEMATTR_UNCACHEABLE ((vm_memattr_t)PAT_UNCACHEABLE) 137 #define VM_MEMATTR_WRITE_COMBINING ((vm_memattr_t)PAT_WRITE_COMBINING) 138 #define VM_MEMATTR_WRITE_THROUGH ((vm_memattr_t)PAT_WRITE_THROUGH) 139 #define VM_MEMATTR_WRITE_PROTECTED ((vm_memattr_t)PAT_WRITE_PROTECTED) 140 #define VM_MEMATTR_WRITE_BACK ((vm_memattr_t)PAT_WRITE_BACK) 141 #define VM_MEMATTR_WEAK_UNCACHEABLE ((vm_memattr_t)PAT_UNCACHED) 142 143 #define VM_MEMATTR_DEFAULT VM_MEMATTR_WRITE_BACK 144 145 #endif /* _VM_VM_H_ */ 146