1 /* $OpenBSD: uvm_fault.h,v 1.8 2001/05/09 15:58:29 art Exp $ */ 2 /* $NetBSD: uvm_fault.h,v 1.13 1999/06/21 17:25:11 thorpej Exp $ */ 3 4 /* 5 * 6 * Copyright (c) 1997 Charles D. Cranor and Washington University. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by Charles D. Cranor and 20 * Washington University. 21 * 4. The name of the author may not be used to endorse or promote products 22 * derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 29 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 33 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 * 35 * from: Id: uvm_fault.h,v 1.1.2.2 1997/12/08 16:07:12 chuck Exp 36 */ 37 38 #ifndef _UVM_UVM_FAULT_H_ 39 #define _UVM_UVM_FAULT_H_ 40 41 /* 42 * fault types 43 */ 44 45 #define VM_FAULT_INVALID ((vm_fault_t) 0x0) /* invalid mapping */ 46 #define VM_FAULT_PROTECT ((vm_fault_t) 0x1) /* protection */ 47 #define VM_FAULT_WIRE ((vm_fault_t) 0x2) /* wire mapping */ 48 49 /* 50 * fault data structures 51 */ 52 53 /* 54 * uvm_faultinfo: to load one of these fill in all orig_* fields and 55 * then call uvmfault_lookup on it. 56 */ 57 58 59 struct uvm_faultinfo { 60 vm_map_t orig_map; /* IN: original map */ 61 vaddr_t orig_rvaddr; /* IN: original rounded VA */ 62 vsize_t orig_size; /* IN: original size of interest */ 63 vm_map_t map; /* map (could be a submap) */ 64 unsigned int mapv; /* map's version number */ 65 vm_map_entry_t entry; /* map entry (from 'map') */ 66 vsize_t size; /* size of interest */ 67 }; 68 69 #ifdef _KERNEL 70 71 /* 72 * fault prototypes 73 */ 74 75 76 int uvmfault_anonget __P((struct uvm_faultinfo *, struct vm_amap *, 77 struct vm_anon *)); 78 static boolean_t uvmfault_check_intrsafe __P((struct uvm_faultinfo *)); 79 static boolean_t uvmfault_lookup __P((struct uvm_faultinfo *, boolean_t)); 80 static boolean_t uvmfault_relock __P((struct uvm_faultinfo *)); 81 static void uvmfault_unlockall __P((struct uvm_faultinfo *, struct vm_amap *, 82 struct uvm_object *, struct vm_anon *)); 83 static void uvmfault_unlockmaps __P((struct uvm_faultinfo *, boolean_t)); 84 85 int uvm_fault_wire __P((vm_map_t, vaddr_t, vaddr_t, vm_prot_t)); 86 void uvm_fault_unwire __P((vm_map_t, vaddr_t, vaddr_t)); 87 void uvm_fault_unwire_locked __P((vm_map_t, vaddr_t, vaddr_t)); 88 89 #endif /* _KERNEL */ 90 91 #endif /* _UVM_UVM_FAULT_H_ */ 92