psl.h revision 1.14 
1/*	$NetBSD: psl.h,v 1.14 2007/12/03 15:33:19 ad Exp $	*/
2
3/*
4 * Copyright (c) 1995 Mark Brinicombe.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by Mark Brinicombe
18 *	for the NetBSD Project.
19 * 4. The name of the company nor the name of the author may be used to
20 *    endorse or promote products derived from this software without specific
21 *    prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * RiscBSD kernel project
36 *
37 * psl.h
38 *
39 * spl prototypes.
40 * Eventually this will become a set of defines.
41 *
42 * Created      : 21/07/95
43 */
44
45#ifndef _ARM_PSL_H_
46#define _ARM_PSL_H_
47#include <machine/intr.h>
48#if (! defined(_LOCORE)) && (! defined(hpcarm))
49#include <arm/softintr.h>
50#endif
51
52/*
53 * These are the different SPL states
54 *
55 * Each state has an interrupt mask associated with it which
56 * indicate which interrupts are allowed.
57 */
58
59#define _SPL_0		0
60#define _SPL_SOFTCLOCK	1
61#define _SPL_SOFTBIO	2
62#define _SPL_SOFTNET	3
63#define _SPL_SOFTSERIAL	4
64#define _SPL_VM		5
65#define _SPL_SCHED	6
66#define _SPL_HIGH	7
67#define _SPL_LEVELS	8
68
69#define spl0()		splx(_SPL_0)
70#define splsoftclock()	raisespl(_SPL_SOFTCLOCK)
71#define splsoftbio()	raisespl(_SPL_SOFTBIO)
72#define splsoftnet()	raisespl(_SPL_SOFTNET)
73#define splsoftserial()	raisespl(_SPL_SOFTSERIAL)
74#define splvm()		raisespl(_SPL_VM)
75#define splsched()	raisespl(_SPL_SCHED)
76#define splhigh()	raisespl(_SPL_HIGH)
77
78#ifdef _KERNEL
79#ifndef _LOCORE
80int raisespl	__P((int));
81int lowerspl	__P((int));
82int splx	__P((int));
83
84void _setsoftintr	(int si);
85
86extern int current_spl_level;
87
88extern u_int spl_masks[_SPL_LEVELS + 1];
89
90typedef uint8_t ipl_t;
91typedef struct {
92	uint8_t _spl;
93} ipl_cookie_t;
94
95int ipl_to_spl(ipl_t);
96
97static inline ipl_cookie_t
98makeiplcookie(ipl_t ipl)
99{
100
101	return (ipl_cookie_t){._spl = (uint8_t)ipl_to_spl(ipl)};
102}
103
104static inline int
105splraiseipl(ipl_cookie_t icookie)
106{
107
108	return raisespl(icookie._spl);
109}
110#endif /* _LOCORE */
111#endif /* _KERNEL */
112
113#endif /* _ARM_PSL_H_ */
114/* End of psl.h */
115