sys/uvm/uvm_fault.h

   1 /*      $NetBSD: uvm_fault.h,v 1.20 2011/02/02 15:13:34 chuck Exp $     */
   2
   3 /*
   4  * Copyright (c) 1997 Charles D. Cranor and Washington University.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  *
  27  * from: Id: uvm_fault.h,v 1.1.2.2 1997/12/08 16:07:12 chuck Exp
  28  */
  29
  30 #ifndef _UVM_UVM_FAULT_H_
  31 #define _UVM_UVM_FAULT_H_
  32
  33 /*
  34  * fault data structures
  35  */
  36
  37 /*
  38  * uvm_faultinfo: to load one of these fill in all orig_* fields and
  39  * then call uvmfault_lookup on it.
  40  */
  41
  42
  43 struct uvm_faultinfo {
  44         struct vm_map *orig_map;                /* IN: original map */
  45         vaddr_t orig_rvaddr;            /* IN: original rounded VA */
  46         vsize_t orig_size;              /* IN: original size of interest */
  47         struct vm_map *map;                     /* map (could be a submap) */
  48         unsigned int mapv;              /* map's version number */
  49         struct vm_map_entry *entry;             /* map entry (from 'map') */
  50         vsize_t size;                   /* size of interest */
  51 };
  52
  53 #ifdef _KERNEL
  54
  55 /*
  56  * fault prototypes
  57  */
  58
  59 int uvmfault_anonget(struct uvm_faultinfo *, struct vm_amap *,
  60                      struct vm_anon *);
  61
  62 int uvm_fault_wire(struct vm_map *, vaddr_t, vaddr_t, vm_prot_t, int);
  63 void uvm_fault_unwire(struct vm_map *, vaddr_t, vaddr_t);
  64 void uvm_fault_unwire_locked(struct vm_map *, vaddr_t, vaddr_t);
  65
  66 #endif /* _KERNEL */
  67
  68 #endif /* _UVM_UVM_FAULT_H_ */