92 lines
3.5 KiB
C
92 lines
3.5 KiB
C
/* $NetBSD: uvm_fault.h,v 1.5 1998/03/09 00:58:56 mrg Exp $ */
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/*
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* XXXCDC: "ROUGH DRAFT" QUALITY UVM PRE-RELEASE FILE!
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* >>>USE AT YOUR OWN RISK, WORK IS NOT FINISHED<<<
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*/
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/*
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*
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* Copyright (c) 1997 Charles D. Cranor and Washington University.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles D. Cranor and
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* Washington University.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* from: Id: uvm_fault.h,v 1.1.2.2 1997/12/08 16:07:12 chuck Exp
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*/
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#ifndef _UVM_UVM_FAULT_H_
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#define _UVM_UVM_FAULT_H_
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/*
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* fault types
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*/
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#define VM_FAULT_INVALID ((vm_fault_t) 0x0) /* invalid mapping */
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#define VM_FAULT_PROTECT ((vm_fault_t) 0x1) /* protection */
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#define VM_FAULT_WIRE ((vm_fault_t) 0x2) /* wire mapping */
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/*
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* fault data structures
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*/
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/*
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* uvm_faultinfo: to load one of these fill in all orig_* fields and
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* then call uvmfault_lookup on it.
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*/
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struct uvm_faultinfo {
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vm_map_t orig_map; /* original map (IN) */
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vm_offset_t orig_rvaddr; /* original rounded VA (IN) */
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vm_size_t orig_size; /* original size of interest (IN) */
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vm_offset_t rvaddr; /* rounded virtual address */
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vm_map_t parent_map; /* parent map */
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unsigned int parentv; /* parent map version number */
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vm_map_t map; /* map */
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unsigned int mapv; /* map version number */
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vm_map_entry_t entry; /* map entry of rvaddr */
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vm_size_t size; /* size of interest */
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};
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/*
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* fault prototypes
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*/
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int uvmfault_anonget __P((struct uvm_faultinfo *, struct vm_amap *,
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struct vm_anon *));
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static boolean_t uvmfault_lookup __P((struct uvm_faultinfo *, boolean_t));
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static boolean_t uvmfault_relock __P((struct uvm_faultinfo *));
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static void uvmfault_unlockall __P((struct uvm_faultinfo *, struct vm_amap *,
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struct uvm_object *, struct vm_anon *));
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static void uvmfault_unlockmaps __P((struct uvm_faultinfo *, boolean_t));
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int uvm_fault_wire __P((vm_map_t, vm_offset_t, vm_offset_t));
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void uvm_fault_unwire __P((struct pmap *, vm_offset_t, vm_offset_t));
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#endif /* _UVM_UVM_FAULT_H_ */
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