xref: /illumos-gate/usr/src/uts/intel/sys/spl.h (revision 3db86aab)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright (c) 1992-1993,1999 by Sun Microsystems, Inc.
24  * All rights reserved.
25  */
26 
27 #ifndef _SYS_SPL_H
28 #define	_SYS_SPL_H
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #ifdef	__cplusplus
33 extern "C" {
34 #endif
35 
36 /*
37  * Convert system interrupt priorities (0-7) into a psr for splx.
38  * In general, the processor priority (0-15) should be 2 times
39  * the system pririty.
40  */
41 #define	pritospl(n)	((n) << 1)
42 
43 /*
44  * on x86 platform these are identity functions
45  */
46 #define	ipltospl(n)	(n)
47 #define	spltoipl(n)	(n)
48 #define	spltopri(n)	(n)
49 
50 /*
51  * Hardware spl levels
52  * it should be replace by the appropriate interrupt class info.
53  */
54 #define	SPL8    15
55 #define	SPL7    13
56 
57 #ifdef	__cplusplus
58 }
59 #endif
60 
61 #endif	/* _SYS_SPL_H */
62