sys/uvm/uvm_fault.h

   1 /*      $NetBSD: uvm_fault.h,v 1.18 2005/12/11 12:25:29 christos Exp $  */
   2
   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  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by Charles D. Cranor and
  19  *      Washington University.
  20  * 4. The name of the author may not be used to endorse or promote products
  21  *    derived from this software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  28  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  32  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  *
  34  * from: Id: uvm_fault.h,v 1.1.2.2 1997/12/08 16:07:12 chuck Exp
  35  */
  36
  37 #ifndef _UVM_UVM_FAULT_H_
  38 #define _UVM_UVM_FAULT_H_
  39
  40 /*
  41  * fault data structures
  42  */
  43
  44 /*
  45  * uvm_faultinfo: to load one of these fill in all orig_* fields and
  46  * then call uvmfault_lookup on it.
  47  */
  48
  49
  50 struct uvm_faultinfo {
  51         struct vm_map *orig_map;                /* IN: original map */
  52         vaddr_t orig_rvaddr;            /* IN: original rounded VA */
  53         vsize_t orig_size;              /* IN: original size of interest */
  54         struct vm_map *map;                     /* map (could be a submap) */
  55         unsigned int mapv;              /* map's version number */
  56         struct vm_map_entry *entry;             /* map entry (from 'map') */
  57         vsize_t size;                   /* size of interest */
  58 };
  59
  60 #ifdef _KERNEL
  61
  62 /*
  63  * fault prototypes
  64  */
  65
  66 int uvmfault_anonget(struct uvm_faultinfo *, struct vm_amap *,
  67                      struct vm_anon *);
  68
  69 int uvm_fault_wire(struct vm_map *, vaddr_t, vaddr_t, vm_prot_t, int);
  70 void uvm_fault_unwire(struct vm_map *, vaddr_t, vaddr_t);
  71 void uvm_fault_unwire_locked(struct vm_map *, vaddr_t, vaddr_t);
  72
  73 #endif /* _KERNEL */
  74
  75 #endif /* _UVM_UVM_FAULT_H_ */