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      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_ */
     69