2 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by Charles M. Hannum.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the NetBSD
19 * Foundation, Inc. and its contributors.
20 * 4. Neither the name of The NetBSD Foundation nor the names of its
21 * contributors may be used to endorse or promote products derived
22 * from this software without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
36 * $NetBSD: intr.h,v 1.6 2000/02/11 13:15:44 tsubai Exp $
40 #ifndef _MACPPC_INTR_H_
41 #define _MACPPC_INTR_H_
43 /* Interrupt priority `levels'. */
44 #define IPL_NONE 9 /* nothing */
45 #define IPL_SOFTCLOCK 8 /* timeouts */
46 #define IPL_SOFTNET 7 /* protocol stacks */
47 #define IPL_BIO 6 /* block I/O */
48 #define IPL_NET 5 /* network */
49 #define IPL_SOFTSERIAL 4 /* serial */
50 #define IPL_TTY 3 /* terminal */
51 #define IPL_IMP 3 /* memory allocation */
52 #define IPL_AUDIO 2 /* audio */
53 #define IPL_CLOCK 1 /* clock */
54 #define IPL_HIGH 1 /* everything */
55 #define IPL_SERIAL 0 /* serial */
58 /* Interrupt sharing types. */
59 #define IST_NONE 0 /* none */
60 #define IST_PULSE 1 /* pulsed */
61 #define IST_EDGE 2 /* edge-triggered */
62 #define IST_LEVEL 3 /* level-triggered */
68 * Interrupt handler chains. intr_establish() inserts a handler into
69 * the list. The handler is called with its (single) argument.
72 int (*ih_fun)(void *);
75 struct intrhand *ih_next;
81 void setsoftclock(void);
82 void clearsoftclock(void);
83 void setsoftnet(void);
84 void clearsoftnet(void);
86 void do_pending_int(void);
88 static __inline void softintr(int);
90 extern u_int cpl, ipending, tickspending;
93 /* Following code should be implemented with lwarx/stwcx to avoid
94 * the disable/enable. i need to read the manual once more.... */
101 mtmsr(msrsave & ~PSL_EE);
103 ipending |= 1 << ipl;
110 /* Soft interrupt masks. */
113 #define SIR_SERIAL 30
119 * Hardware interrupt masks
122 #define splbio() splraise(imask[IPL_BIO])
123 #define splnet() splraise(imask[IPL_NET])
124 #define spltty() splraise(imask[IPL_TTY])
125 #define splaudio() splraise(imask[IPL_AUDIO])
126 #define splclock() splraise(imask[IPL_CLOCK])
127 #define splstatclock() splclock()
128 #define splserial() splraise(imask[IPL_SERIAL])
130 #define spllpt() spltty()
133 * Software interrupt masks
135 * NOTE: splsoftclock() is used by hardclock() to lower the priority from
136 * clock to softclock before it calls softclock().
138 #define spllowersoftclock() spllower(imask[IPL_SOFTCLOCK])
139 #define splsoftclock() splraise(imask[IPL_SOFTCLOCK])
140 #define splsoftnet() splraise(imask[IPL_SOFTNET])
141 #define splsoftserial() splraise(imask[IPL_SOFTSERIAL])
146 #define splimp() splraise(imask[IPL_IMP])
147 #define splhigh() splraise(imask[IPL_HIGH])
148 #define spl0() spllower(0)
152 #define setsoftclock() softintr(SIR_CLOCK)
153 #define setsoftnet() softintr(SIR_NET)
154 #define setsoftserial() softintr(SIR_SERIAL)
158 #define CNT_SOFTCLOCK 65
159 #define CNT_SOFTNET 66
160 #define CNT_SOFTSERIAL 67
164 #endif /* !_MACPPC_INTR_H_ */