xref: /illumos-gate/usr/src/uts/sparc/sys/spl.h (revision f875b4ebb1dd9fdbeb043557cab38ab3bf7f6e01)
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 1986,2003 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef _SYS_SPL_H
28 #define	_SYS_SPL_H
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI" /* from SunOS psl.h 1.2 */
31 
32 #ifdef	__cplusplus
33 extern "C" {
34 #endif
35 
36 /*
37  * v9 spl and ipl are identical since pil is a separate register.
38  */
39 #define	ipltospl(n)	(n)
40 #define	spltoipl(n)	(n)
41 
42 /*
43  * Hardware spl levels
44  * XXX - This is a hack for softcall to block all i/o interrupts.
45  * XXX - SPL5 and SPL3 are hacks for the latest zs code.
46  * it should be replace by the appropriate interrupt class info.
47  */
48 #define	SPL8    15
49 #define	SPL7    13
50 #define	SPL5    12
51 #define	SPLTTY  SPL5
52 #define	SPL3    6
53 
54 #ifdef	__cplusplus
55 }
56 #endif
57 
58 #endif	/* _SYS_SPL_H */
59