1 /* $NetBSD: intr.h,v 1.14 2006/01/01 14:24:33 yamt Exp $ */ 2 3 /* 4 * Copyright (c) 2001, 2003 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #ifndef _EVBARM_INTR_H_ 39 #define _EVBARM_INTR_H_ 40 41 #ifdef _KERNEL 42 43 /* Interrupt priority "levels". */ 44 #define IPL_NONE 0 /* nothing */ 45 #define IPL_SOFT 1 /* generic software interrupts */ 46 #define IPL_SOFTCLOCK 2 /* software clock interrupt */ 47 #define IPL_SOFTNET 3 /* software network interrupt */ 48 #define IPL_BIO 4 /* block I/O */ 49 #define IPL_NET 5 /* network */ 50 #define IPL_SOFTSERIAL 6 /* software serial interrupt */ 51 #define IPL_TTY 7 /* terminals */ 52 #define IPL_VM 8 /* memory allocation */ 53 #define IPL_AUDIO 9 /* audio device */ 54 #define IPL_CLOCK 10 /* clock interrupt */ 55 #define IPL_STATCLOCK 11 /* statistics clock interrupt */ 56 #define IPL_HIGH 12 /* everything */ 57 #define IPL_SCHED IPL_HIGH 58 #define IPL_LOCK IPL_HIGH 59 #define IPL_SERIAL 13 /* serial device */ 60 61 #define NIPL 14 62 63 /* Interrupt sharing types. */ 64 #define IST_NONE 0 /* none */ 65 #define IST_PULSE 1 /* pulsed */ 66 #define IST_EDGE 2 /* edge-triggered */ 67 #define IST_LEVEL 3 /* level-triggered */ 68 69 #define IST_LEVEL_LOW IST_LEVEL 70 #define IST_LEVEL_HIGH 4 71 #define IST_EDGE_FALLING IST_EDGE 72 #define IST_EDGE_RISING 5 73 #define IST_EDGE_BOTH 6 74 75 #ifdef __OLD_INTERRUPT_CODE /* XXX XXX XXX */ 76 77 /* Software interrupt priority levels */ 78 79 #define SOFTIRQ_CLOCK 0 80 #define SOFTIRQ_NET 1 81 #define SOFTIRQ_SERIAL 2 82 83 #define SOFTIRQ_BIT(x) (1 << x) 84 85 #include <arm/arm32/psl.h> 86 87 #else /* ! __OLD_INTERRUPT_CODE */ 88 89 #define __NEWINTR /* enables new hooks in cpu_fork()/cpu_switch() */ 90 91 #ifndef _LOCORE 92 93 #include <sys/device.h> 94 #include <sys/queue.h> 95 96 #if defined(_LKM) 97 98 int _splraise(int); 99 int _spllower(int); 100 void splx(int); 101 void _setsoftintr(int); 102 103 #else /* _LKM */ 104 105 #include "opt_arm_intr_impl.h" 106 107 #if defined(ARM_INTR_IMPL) 108 109 /* 110 * Each board needs to define the following functions: 111 * 112 * int _splraise(int); 113 * int _spllower(int); 114 * void splx(int); 115 * void _setsoftintr(int); 116 * 117 * These may be defined as functions, static inline functions, or macros, 118 * but there must be a _spllower() and splx() defined as functions callable 119 * from assembly language (for cpu_switch()). However, since it's quite 120 * useful to be able to inline splx(), you could do something like the 121 * following: 122 * 123 * in <boardtype>_intr.h: 124 * static inline int 125 * boardtype_splx(int spl) 126 * {...} 127 * 128 * #define splx(nspl) boardtype_splx(nspl) 129 * ... 130 * and in boardtype's machdep code: 131 * 132 * ... 133 * #undef splx 134 * int 135 * splx(int spl) 136 * { 137 * return boardtype_splx(spl); 138 * } 139 */ 140 141 #include ARM_INTR_IMPL 142 143 #else /* ARM_INTR_IMPL */ 144 145 #error ARM_INTR_IMPL not defined. 146 147 #endif /* ARM_INTR_IMPL */ 148 149 #endif /* _LKM */ 150 151 #define splsoft() _splraise(IPL_SOFT) 152 #define splraiseipl(x) _splraise(x) 153 154 #define spl0() _spllower(IPL_NONE) 155 #define spllowersoftclock() _spllower(IPL_SOFTCLOCK) 156 157 #include <sys/spl.h> 158 159 /* Use generic software interrupt support. */ 160 #include <arm/softintr.h> 161 162 #endif /* ! _LOCORE */ 163 164 #endif /* __OLD_INTERRUPT_CODE */ 165 166 #endif /* _KERNEL */ 167 168 #endif /* _EVBARM_INTR_H_ */ 169