xref: /onnv-gate/usr/src/uts/common/vm/faultcode.h (revision 5084:7d838c5c0eed)
10Sstevel@tonic-gate /*
20Sstevel@tonic-gate  * CDDL HEADER START
30Sstevel@tonic-gate  *
40Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*5084Sjohnlev  * Common Development and Distribution License (the "License").
6*5084Sjohnlev  * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate  *
80Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate  * See the License for the specific language governing permissions
110Sstevel@tonic-gate  * and limitations under the License.
120Sstevel@tonic-gate  *
130Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate  *
190Sstevel@tonic-gate  * CDDL HEADER END
200Sstevel@tonic-gate  */
210Sstevel@tonic-gate /*
22*5084Sjohnlev  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
230Sstevel@tonic-gate  * Use is subject to license terms.
240Sstevel@tonic-gate  */
250Sstevel@tonic-gate 
260Sstevel@tonic-gate /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
270Sstevel@tonic-gate /*	  All Rights Reserved  	*/
280Sstevel@tonic-gate 
290Sstevel@tonic-gate /*
300Sstevel@tonic-gate  * University Copyright- Copyright (c) 1982, 1986, 1988
310Sstevel@tonic-gate  * The Regents of the University of California
320Sstevel@tonic-gate  * All Rights Reserved
330Sstevel@tonic-gate  *
340Sstevel@tonic-gate  * University Acknowledgment- Portions of this document are derived from
350Sstevel@tonic-gate  * software developed by the University of California, Berkeley, and its
360Sstevel@tonic-gate  * contributors.
370Sstevel@tonic-gate  */
380Sstevel@tonic-gate 
390Sstevel@tonic-gate #ifndef	_VM_FAULTCODE_H
400Sstevel@tonic-gate #define	_VM_FAULTCODE_H
410Sstevel@tonic-gate 
420Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
430Sstevel@tonic-gate 
440Sstevel@tonic-gate #ifdef	__cplusplus
450Sstevel@tonic-gate extern "C" {
460Sstevel@tonic-gate #endif
470Sstevel@tonic-gate 
480Sstevel@tonic-gate /*
490Sstevel@tonic-gate  * This file describes the data type returned by vm routines
500Sstevel@tonic-gate  * which handle faults.
510Sstevel@tonic-gate  *
520Sstevel@tonic-gate  * If FC_CODE(fc) == FC_OBJERR, then FC_ERRNO(fc) contains the errno value
530Sstevel@tonic-gate  * returned by the underlying object mapped at the fault address.
540Sstevel@tonic-gate  */
550Sstevel@tonic-gate #define	FC_HWERR	0x1	/* misc hardware error (e.g. bus timeout) */
560Sstevel@tonic-gate #define	FC_ALIGN	0x2	/* hardware alignment error */
570Sstevel@tonic-gate #define	FC_OBJERR	0x3	/* underlying object returned errno value */
580Sstevel@tonic-gate #define	FC_PROT		0x4	/* access exceeded current protections */
590Sstevel@tonic-gate #define	FC_NOMAP	0x5	/* no mapping at the fault address */
600Sstevel@tonic-gate #define	FC_NOSUPPORT	0x6	/* operation not supported by driver */
610Sstevel@tonic-gate 
620Sstevel@tonic-gate #define	FC_MAKE_ERR(e)	(((e) << 8) | FC_OBJERR)
630Sstevel@tonic-gate 
640Sstevel@tonic-gate #define	FC_CODE(fc)	((fc) & 0xff)
650Sstevel@tonic-gate #define	FC_ERRNO(fc)	((unsigned)(fc) >> 8)
660Sstevel@tonic-gate 
670Sstevel@tonic-gate #ifndef	_ASM
680Sstevel@tonic-gate typedef	int	faultcode_t;	/* type returned by vm fault routines */
69*5084Sjohnlev 
70*5084Sjohnlev extern int fc_decode(faultcode_t);
71*5084Sjohnlev 
720Sstevel@tonic-gate #endif	/* _ASM */
730Sstevel@tonic-gate 
740Sstevel@tonic-gate #ifdef	__cplusplus
750Sstevel@tonic-gate }
760Sstevel@tonic-gate #endif
770Sstevel@tonic-gate 
780Sstevel@tonic-gate #endif	/* _VM_FAULTCODE_H */
79