intr.h revision 1.14 
1/*	$NetBSD: intr.h,v 1.14 2002/07/05 18:45:17 matt Exp $	*/
2
3/*-
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *        This product includes software developed by the NetBSD
21 *        Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39#ifndef _MACPPC_INTR_H_
40#define _MACPPC_INTR_H_
41
42/* Interrupt priority `levels'. */
43#define	IPL_NONE	9	/* nothing */
44#define	IPL_SOFTCLOCK	8	/* timeouts */
45#define	IPL_SOFTNET	7	/* protocol stacks */
46#define	IPL_BIO		6	/* block I/O */
47#define	IPL_NET		5	/* network */
48#define	IPL_SOFTSERIAL	4	/* serial */
49#define	IPL_TTY		3	/* terminal */
50#define	IPL_IMP		3	/* memory allocation */
51#define	IPL_AUDIO	2	/* audio */
52#define	IPL_CLOCK	1	/* clock */
53#define	IPL_HIGH	1	/* everything */
54#define	IPL_SERIAL	0	/* serial */
55#define	NIPL		10
56
57/* Interrupt sharing types. */
58#define	IST_NONE	0	/* none */
59#define	IST_PULSE	1	/* pulsed */
60#define	IST_EDGE	2	/* edge-triggered */
61#define	IST_LEVEL	3	/* level-triggered */
62
63#ifndef _LOCORE
64
65/*
66 * Interrupt handler chains.  intr_establish() inserts a handler into
67 * the list.  The handler is called with its (single) argument.
68 */
69struct intrhand {
70	int	(*ih_fun) __P((void *));
71	void	*ih_arg;
72	u_long	ih_count;
73	struct	intrhand *ih_next;
74	int	ih_level;
75	int	ih_irq;
76};
77
78void softnet __P((int));
79void softserial __P((void));
80
81int splraise __P((int));
82int spllower __P((int));
83void splx __P((int));
84void softintr __P((int));
85
86extern volatile int astpending, tickspending;
87extern int imask[];
88
89#define ICU_LEN		64
90
91/* Soft interrupt masks. */
92#define SIR_CLOCK	28
93#define SIR_NET		29
94#define SIR_SERIAL	30
95#define SPL_CLOCK	31
96
97/*
98 * Hardware interrupt masks
99 */
100#define splbio()	splraise(imask[IPL_BIO])
101#define splnet()	splraise(imask[IPL_NET])
102#define spltty()	splraise(imask[IPL_TTY])
103#define	splaudio()	splraise(imask[IPL_AUDIO])
104#define splclock()	splraise(imask[IPL_CLOCK])
105#define splstatclock()	splclock()
106#define	splserial()	splraise(imask[IPL_SERIAL])
107
108#define spllpt()	spltty()
109
110/*
111 * Software interrupt masks
112 *
113 * NOTE: splsoftclock() is used by hardclock() to lower the priority from
114 * clock to softclock before it calls softclock().
115 */
116#define	spllowersoftclock() spllower(imask[IPL_SOFTCLOCK])
117#define	splsoftclock()	splraise(imask[IPL_SOFTCLOCK])
118#define	splsoftnet()	splraise(imask[IPL_SOFTNET])
119#define	splsoftserial()	splraise(imask[IPL_SOFTSERIAL])
120
121/*
122 * Miscellaneous
123 */
124#define splvm()		splraise(imask[IPL_IMP])
125#define	splhigh()	splraise(imask[IPL_HIGH])
126#define	splsched()	splhigh()
127#define	spllock()	splhigh()
128#define	spl0()		spllower(0)
129
130#define	setsoftclock()	softintr(SIR_CLOCK)
131#define	setsoftnet()	softintr(SIR_NET)
132#define	setsoftserial()	softintr(SIR_SERIAL)
133
134extern long intrcnt[];
135
136#define CNT_IRQ0	0
137#define CNT_CLOCK	64
138#define CNT_SOFTCLOCK	65
139#define CNT_SOFTNET	66
140#define CNT_SOFTSERIAL	67
141
142#define MACPPC_IPI_HALT		0x01
143#define MACPPC_IPI_FLUSH_FPU	0x02
144
145#ifdef MULTIPROCESSOR
146struct cpu_info;
147void macppc_send_ipi(volatile struct cpu_info *, int);
148#endif
149
150#endif /* _LOCORE */
151
152#endif /* _MACPPC_INTR_H_ */
153