1/* $OpenBSD: uvm_fault.h,v 1.16 2020/11/06 11:52:39 mpi Exp $ */
2/* $NetBSD: uvm_fault.h,v 1.14 2000/06/26 14:21:17 mrg Exp $ */
3
4/*
5 * Copyright (c) 1997 Charles D. Cranor and Washington University.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * from: Id: uvm_fault.h,v 1.1.2.2 1997/12/08 16:07:12 chuck Exp
29 */
30
31#ifndef _UVM_UVM_FAULT_H_
32#define _UVM_UVM_FAULT_H_
33
34/*
35 * fault types
36 */
37
38#define VM_FAULT_INVALID ((vm_fault_t) 0x0) /* invalid mapping */
39#define VM_FAULT_PROTECT ((vm_fault_t) 0x1) /* protection */
40#define VM_FAULT_WIRE ((vm_fault_t) 0x2) /* wire mapping */
41
42/*
43 * fault data structures
44 */
45
46/*
47 * uvm_faultinfo: to load one of these fill in all orig_* fields and
48 * then call uvmfault_lookup on it.
49 */
50
51
52struct uvm_faultinfo {
53 vm_map_t orig_map; /* IN: original map */
54 vaddr_t orig_rvaddr; /* IN: original rounded VA */
55 vsize_t orig_size; /* IN: original size of interest */
56 vm_map_t map; /* map (could be a submap) */
57 unsigned int mapv; /* map's version number */
58 vm_map_entry_t entry; /* map entry (from 'map') */
59 vsize_t size; /* size of interest */
60};
61
62#ifdef _KERNEL
63
64/*
65 * fault prototypes
66 */
67
68void uvmfault_init(void);
69
70boolean_t uvmfault_lookup(struct uvm_faultinfo *, boolean_t);
71boolean_t uvmfault_relock(struct uvm_faultinfo *);
72void uvmfault_unlockall(struct uvm_faultinfo *, struct vm_amap *,
73 struct uvm_object *);
74int uvmfault_anonget(struct uvm_faultinfo *, struct vm_amap *,
75 struct vm_anon *);
76
77int uvm_fault_wire(vm_map_t, vaddr_t, vaddr_t, vm_prot_t);
78void uvm_fault_unwire(vm_map_t, vaddr_t, vaddr_t);
79void uvm_fault_unwire_locked(vm_map_t, vaddr_t, vaddr_t);
80
81#endif /* _KERNEL */
82
83#endif /* _UVM_UVM_FAULT_H_ */