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Annotation of src/sys/uvm/uvm_fault.h, Revision 1.13

1.13    ! thorpej     1: /*     $NetBSD: uvm_fault.h,v 1.12 1999/06/16 22:11:23 thorpej Exp $   */
1.1       mrg         2:
                      3: /*
                      4:  *
                      5:  * Copyright (c) 1997 Charles D. Cranor and Washington University.
                      6:  * All rights reserved.
                      7:  *
                      8:  * Redistribution and use in source and binary forms, with or without
                      9:  * modification, are permitted provided that the following conditions
                     10:  * are met:
                     11:  * 1. Redistributions of source code must retain the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer.
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
                     16:  * 3. All advertising materials mentioning features or use of this software
                     17:  *    must display the following acknowledgement:
                     18:  *      This product includes software developed by Charles D. Cranor and
                     19:  *      Washington University.
                     20:  * 4. The name of the author may not be used to endorse or promote products
                     21:  *    derived from this software without specific prior written permission.
                     22:  *
                     23:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     24:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     25:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     26:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
                     27:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     28:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     29:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     30:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     31:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                     32:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.3       mrg        33:  *
                     34:  * from: Id: uvm_fault.h,v 1.1.2.2 1997/12/08 16:07:12 chuck Exp
1.1       mrg        35:  */
                     36:
1.4       perry      37: #ifndef _UVM_UVM_FAULT_H_
                     38: #define _UVM_UVM_FAULT_H_
                     39:
1.1       mrg        40: /*
                     41:  * fault types
                     42:  */
                     43:
                     44: #define VM_FAULT_INVALID ((vm_fault_t) 0x0)    /* invalid mapping */
                     45: #define VM_FAULT_PROTECT ((vm_fault_t) 0x1)    /* protection */
                     46: #define VM_FAULT_WIRE   ((vm_fault_t) 0x2)     /* wire mapping */
                     47:
                     48: /*
                     49:  * fault data structures
                     50:  */
                     51:
                     52: /*
                     53:  * uvm_faultinfo: to load one of these fill in all orig_* fields and
                     54:  * then call uvmfault_lookup on it.
                     55:  */
                     56:
                     57:
                     58: struct uvm_faultinfo {
1.7       chuck      59:        vm_map_t orig_map;              /* IN: original map */
                     60:        vaddr_t orig_rvaddr;            /* IN: original rounded VA */
                     61:        vsize_t orig_size;              /* IN: original size of interest */
                     62:        vm_map_t map;                   /* map (could be a submap) */
                     63:        unsigned int mapv;              /* map's version number */
                     64:        vm_map_entry_t entry;           /* map entry (from 'map') */
1.6       eeh        65:        vsize_t size;                   /* size of interest */
1.1       mrg        66: };
                     67:
1.13    ! thorpej    68: #ifdef _KERNEL
        !            69:
1.1       mrg        70: /*
                     71:  * fault prototypes
                     72:  */
                     73:
                     74:
                     75: int uvmfault_anonget __P((struct uvm_faultinfo *, struct vm_amap *,
1.5       mrg        76:                                                                                                        struct vm_anon *));
1.11      thorpej    77: static boolean_t uvmfault_check_intrsafe __P((struct uvm_faultinfo *));
1.1       mrg        78: static boolean_t uvmfault_lookup __P((struct uvm_faultinfo *, boolean_t));
                     79: static boolean_t uvmfault_relock __P((struct uvm_faultinfo *));
                     80: static void uvmfault_unlockall __P((struct uvm_faultinfo *, struct vm_amap *,
                     81:                                    struct uvm_object *, struct vm_anon *));
                     82: static void uvmfault_unlockmaps __P((struct uvm_faultinfo *, boolean_t));
                     83:
1.9       thorpej    84: int uvm_fault_wire __P((vm_map_t, vaddr_t, vaddr_t, vm_prot_t));
1.10      thorpej    85: void uvm_fault_unwire __P((vm_map_t, vaddr_t, vaddr_t));
1.12      thorpej    86: void uvm_fault_unwire_locked __P((vm_map_t, vaddr_t, vaddr_t));
1.13    ! thorpej    87:
        !            88: #endif /* _KERNEL */
1.1       mrg        89:
1.4       perry      90: #endif /* _UVM_UVM_FAULT_H_ */