sys/vm/vm.h

   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  * 4. 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  * $FreeBSD$
  59  */
  60
  61 #ifndef VM_H
  62 #define VM_H
  63
  64 typedef char vm_inherit_t;      /* inheritance codes */
  65
  66 #define VM_INHERIT_SHARE        ((vm_inherit_t) 0)
  67 #define VM_INHERIT_COPY         ((vm_inherit_t) 1)
  68 #define VM_INHERIT_NONE         ((vm_inherit_t) 2)
  69 #define VM_INHERIT_DEFAULT      VM_INHERIT_COPY
  70
  71 typedef u_char vm_prot_t;       /* protection codes */
  72
  73 #define VM_PROT_NONE            ((vm_prot_t) 0x00)
  74 #define VM_PROT_READ            ((vm_prot_t) 0x01)
  75 #define VM_PROT_WRITE           ((vm_prot_t) 0x02)
  76 #define VM_PROT_EXECUTE         ((vm_prot_t) 0x04)
  77 #define VM_PROT_OVERRIDE_WRITE  ((vm_prot_t) 0x08)      /* copy-on-write */
  78
  79 #define VM_PROT_ALL             (VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE)
  80 #define VM_PROT_RW              (VM_PROT_READ|VM_PROT_WRITE)
  81 #define VM_PROT_DEFAULT         VM_PROT_ALL
  82
  83 enum obj_type { OBJT_DEFAULT, OBJT_SWAP, OBJT_VNODE, OBJT_DEVICE, OBJT_PHYS,
  84                 OBJT_DEAD };
  85 typedef u_char objtype_t;
  86
  87 union vm_map_object;
  88 typedef union vm_map_object vm_map_object_t;
  89
  90 struct vm_map_entry;
  91 typedef struct vm_map_entry *vm_map_entry_t;
  92
  93 struct vm_map;
  94 typedef struct vm_map *vm_map_t;
  95
  96 struct vm_object;
  97 typedef struct vm_object *vm_object_t;
  98
  99 #ifndef _KERNEL
 100 /*
 101  * This is defined in <sys/types.h> for the kernel so that non-vm kernel
 102  * sources (mainly Mach-derived ones such as ddb) don't have to include
 103  * vm stuff.  Defining it there for applications might break things.
 104  * Define it here for "applications" that include vm headers (e.g.,
 105  * genassym).
 106  */
 107 typedef int boolean_t;
 108
 109 /*
 110  * This is defined in <sys/types.h> for the kernel so that vnode_if.h
 111  * doesn't have to include <vm/vm.h>.
 112  */
 113 struct vm_page;
 114 typedef struct vm_page *vm_page_t;
 115 #endif                          /* _KERNEL */
 116
 117 struct vm_reserv;
 118 typedef struct vm_reserv *vm_reserv_t;
 119
 120 /*
 121  * Information passed from the machine-independant VM initialization code
 122  * for use by machine-dependant code (mainly for MMU support)
 123  */
 124 struct kva_md_info {
 125         vm_offset_t     buffer_sva;
 126         vm_offset_t     buffer_eva;
 127         vm_offset_t     clean_sva;
 128         vm_offset_t     clean_eva;
 129         vm_offset_t     pager_sva;
 130         vm_offset_t     pager_eva;
 131 };
 132
 133 extern struct kva_md_info       kmi;
 134 extern void vm_ksubmap_init(struct kva_md_info *);
 135
 136 #endif                          /* VM_H */
 137