1 /* 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * Copyright (c) 2003-2019 The DragonFly Project. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of the University nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * @(#)vm.h 8.2 (Berkeley) 12/13/93 31 * @(#)vm_prot.h 8.1 (Berkeley) 6/11/93 32 * @(#)vm_inherit.h 8.1 (Berkeley) 6/11/93 33 * 34 * Copyright (c) 1987, 1990 Carnegie-Mellon University. 35 * All rights reserved. 36 * 37 * Authors: Avadis Tevanian, Jr., Michael Wayne Young 38 * 39 * Permission to use, copy, modify and distribute this software and 40 * its documentation is hereby granted, provided that both the copyright 41 * notice and this permission notice appear in all copies of the 42 * software, derivative works or modified versions, and any portions 43 * thereof, and that both notices appear in supporting documentation. 44 * 45 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 46 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 47 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 48 * 49 * Carnegie Mellon requests users of this software to return to 50 * 51 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 52 * School of Computer Science 53 * Carnegie Mellon University 54 * Pittsburgh PA 15213-3890 55 * 56 * any improvements or extensions that they make and grant Carnegie the 57 * rights to redistribute these changes. 58 * 59 * $FreeBSD: src/sys/vm/vm.h,v 1.16.2.1 2002/12/28 19:49:41 dillon Exp $ 60 */ 61 62 #ifndef _VM_VM_H_ 63 #define _VM_VM_H_ 64 65 #ifndef _SYS_TYPES_H_ 66 #include <sys/types.h> 67 #endif 68 #include <machine/specialreg.h> 69 70 typedef char vm_inherit_t; /* inheritance codes */ 71 72 #define VM_INHERIT_SHARE ((vm_inherit_t) 0) 73 #define VM_INHERIT_COPY ((vm_inherit_t) 1) 74 #define VM_INHERIT_NONE ((vm_inherit_t) 2) 75 #define VM_INHERIT_DEFAULT VM_INHERIT_COPY 76 77 typedef u_char vm_prot_t; /* protection codes */ 78 79 #define VM_PROT_NONE ((vm_prot_t) 0x00) 80 #define VM_PROT_READ ((vm_prot_t) 0x01) 81 #define VM_PROT_WRITE ((vm_prot_t) 0x02) 82 #define VM_PROT_EXECUTE ((vm_prot_t) 0x04) 83 #define VM_PROT_OVERRIDE_WRITE ((vm_prot_t) 0x08) /* copy-on-write */ 84 #define VM_PROT_NOSYNC ((vm_prot_t) 0x10) 85 86 #define VM_PROT_RW (VM_PROT_READ|VM_PROT_WRITE) 87 #define VM_PROT_ALL (VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE) 88 #define VM_PROT_DEFAULT VM_PROT_ALL 89 90 typedef u_char vm_maptype_t; /* type of vm_map_entry */ 91 92 /* 93 * NOTE: UKSMAPs are unmanaged. The underlying kernel memory must not be 94 * freed until all related mappings are gone. There is no object. 95 * The device can map different things for the same UKS mapping even 96 * when inherited via fork(). 97 */ 98 #define VM_MAPTYPE_UNSPECIFIED 0 99 #define VM_MAPTYPE_NORMAL 1 100 #define VM_MAPTYPE_UNUSED02 2 /* was VPAGETABLE */ 101 #define VM_MAPTYPE_SUBMAP 3 102 #define VM_MAPTYPE_UKSMAP 4 /* user-kernel shared memory */ 103 104 struct vm_map_entry; 105 struct vm_map; 106 struct vm_object; 107 typedef struct vm_object *vm_object_t; 108 109 /* 110 * This is also defined in vm/vm_page.h. 111 */ 112 #ifndef __VM_PAGE_T_DEFINED__ 113 #define __VM_PAGE_T_DEFINED__ 114 struct vm_page; 115 typedef struct vm_page *vm_page_t; 116 #endif 117 118 119 /* Memory attributes. */ 120 121 #ifndef __VM_MEMATTR_T_DEFINED__ 122 #define __VM_MEMATTR_T_DEFINED__ 123 typedef char vm_memattr_t; 124 #endif 125 126 #define VM_MEMATTR_UNCACHEABLE ((vm_memattr_t)PAT_UNCACHEABLE) 127 #define VM_MEMATTR_WRITE_COMBINING ((vm_memattr_t)PAT_WRITE_COMBINING) 128 #define VM_MEMATTR_WRITE_THROUGH ((vm_memattr_t)PAT_WRITE_THROUGH) 129 #define VM_MEMATTR_WRITE_PROTECTED ((vm_memattr_t)PAT_WRITE_PROTECTED) 130 #define VM_MEMATTR_WRITE_BACK ((vm_memattr_t)PAT_WRITE_BACK) 131 #define VM_MEMATTR_WEAK_UNCACHEABLE ((vm_memattr_t)PAT_UNCACHED) 132 133 #define VM_MEMATTR_DEFAULT VM_MEMATTR_WRITE_BACK 134 135 #endif /* _VM_VM_H_ */ 136