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/* $NetBSD: uvm_fault.h,v 1.11 1999/06/04 23:38:41 thorpej 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles D. Cranor and
* Washington University.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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 */
};
/*
* fault prototypes
*/
int uvmfault_anonget __P((struct uvm_faultinfo *, struct vm_amap *,
struct vm_anon *));
static boolean_t uvmfault_check_intrsafe __P((struct uvm_faultinfo *));
static boolean_t uvmfault_lookup __P((struct uvm_faultinfo *, boolean_t));
static boolean_t uvmfault_relock __P((struct uvm_faultinfo *));
static void uvmfault_unlockall __P((struct uvm_faultinfo *, struct vm_amap *,
struct uvm_object *, struct vm_anon *));
static void uvmfault_unlockmaps __P((struct uvm_faultinfo *, boolean_t));
int uvm_fault_wire __P((vm_map_t, vaddr_t, vaddr_t, vm_prot_t));
void uvm_fault_unwire __P((vm_map_t, vaddr_t, vaddr_t));
#endif /* _UVM_UVM_FAULT_H_ */
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