psl.h revision 1.16 
1/*	$NetBSD: psl.h,v 1.16 2008/04/27 18:58:44 matt 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
49/*
50 * These are the different SPL states
51 *
52 * Each state has an interrupt mask associated with it which
53 * indicate which interrupts are allowed.
54 */
55
56#define spl0()		splx(IPL_NONE)
57#ifdef __HAVE_FAST_SOFTINTS
58#define splsoftclock()	raisespl(IPL_SOFTCLOCK)
59#define splsoftbio()	raisespl(IPL_SOFTBIO)
60#define splsoftnet()	raisespl(IPL_SOFTNET)
61#define splsoftserial()	raisespl(IPL_SOFTSERIAL)
62#else
63#define splsoftclock()	spl0()
64#define splsoftbio()	spl0()
65#define splsoftnet()	spl0()
66#define splsoftserial()	spl0()
67#endif
68#define splvm()		raisespl(IPL_VM)
69#define splsched()	raisespl(IPL_SCHED)
70#define splhigh()	raisespl(IPL_HIGH)
71
72#ifdef _KERNEL
73#ifndef _LOCORE
74int raisespl	(int);
75int lowerspl	(int);
76int splx	(int);
77
78#ifdef __HAVE_FAST_SOFTINTS
79void _setsoftintr	(int si);
80#endif
81
82typedef uint8_t ipl_t;
83typedef struct {
84	uint8_t _ipl;
85} ipl_cookie_t;
86
87static inline ipl_cookie_t
88makeiplcookie(ipl_t ipl)
89{
90
91	return (ipl_cookie_t){._ipl = (uint8_t)ipl};
92}
93
94static inline int
95splraiseipl(ipl_cookie_t icookie)
96{
97
98	return raisespl(icookie._ipl);
99}
100#endif /* _LOCORE */
101#endif /* _KERNEL */
102
103#endif /* _ARM_PSL_H_ */
104/* End of psl.h */
105