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