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/* $OpenBSD: uvm_fault.h,v 1.15 2014/07/11 16:35:40 jsg Exp $ */
/* $NetBSD: uvm_fault.h,v 1.14 2000/06/26 14:21:17 mrg Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* from: Id: uvm_fault.h,v 1.1.2.2 1997/12/08 16:07:12 chuck Exp
*/
#ifndef _UVM_UVM_FAULT_H_
#define _UVM_UVM_FAULT_H_
/*
* fault types
*/
#define VM_FAULT_INVALID ((vm_fault_t) 0x0) /* invalid mapping */
#define VM_FAULT_PROTECT ((vm_fault_t) 0x1) /* protection */
#define VM_FAULT_WIRE ((vm_fault_t) 0x2) /* wire mapping */
/*
* fault data structures
*/
/*
* uvm_faultinfo: to load one of these fill in all orig_* fields and
* then call uvmfault_lookup on it.
*/
struct uvm_faultinfo {
vm_map_t orig_map; /* IN: original map */
vaddr_t orig_rvaddr; /* IN: original rounded VA */
vsize_t orig_size; /* IN: original size of interest */
vm_map_t map; /* map (could be a submap) */
unsigned int mapv; /* map's version number */
vm_map_entry_t entry; /* map entry (from 'map') */
vsize_t size; /* size of interest */
};
#ifdef _KERNEL
/*
* fault prototypes
*/
void uvmfault_init(void);
boolean_t uvmfault_lookup(struct uvm_faultinfo *, boolean_t);
boolean_t uvmfault_relock(struct uvm_faultinfo *);
void uvmfault_unlockall(struct uvm_faultinfo *, struct vm_amap *,
struct uvm_object *, struct vm_anon *);
int uvmfault_anonget(struct uvm_faultinfo *, struct vm_amap *,
struct vm_anon *);
int uvm_fault_wire(vm_map_t, vaddr_t, vaddr_t, vm_prot_t);
void uvm_fault_unwire(vm_map_t, vaddr_t, vaddr_t);
void uvm_fault_unwire_locked(vm_map_t, vaddr_t, vaddr_t);
#endif /* _KERNEL */
#endif /* _UVM_UVM_FAULT_H_ */
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