1 /* $NetBSD: intr.h,v 1.20 2008/04/27 18:58:46 matt 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 #ifdef __HAVE_FAST_SOFTINTS 45 #define IPL_NONE 0 /* nothing */ 46 #define IPL_SOFTCLOCK 1 /* clock */ 47 #define IPL_SOFTBIO 2 /* block I/O */ 48 #define IPL_SOFTNET 3 /* software network interrupt */ 49 #define IPL_SOFTSERIAL 4 /* software serial interrupt */ 50 #define IPL_VM 5 /* memory allocation */ 51 #define IPL_SCHED 6 /* clock interrupt */ 52 #define IPL_HIGH 7 /* everything */ 53 54 #define NIPL 8 55 #else 56 #define IPL_NONE 0 /* nothing */ 57 #define IPL_SOFTCLOCK IPL_NONE /* clock */ 58 #define IPL_SOFTBIO IPL_NONE /* block I/O */ 59 #define IPL_SOFTNET IPL_NONE /* software network interrupt */ 60 #define IPL_SOFTSERIAL IPL_NONE /* software serial interrupt */ 61 #define IPL_VM 1 /* memory allocation */ 62 #define IPL_SCHED 2 /* clock interrupt */ 63 #define IPL_HIGH 3 /* everything */ 64 65 #define NIPL 4 66 #endif 67 68 /* Interrupt sharing types. */ 69 #define IST_NONE 0 /* none */ 70 #define IST_PULSE 1 /* pulsed */ 71 #define IST_EDGE 2 /* edge-triggered */ 72 #define IST_LEVEL 3 /* level-triggered */ 73 74 #define IST_LEVEL_LOW IST_LEVEL 75 #define IST_LEVEL_HIGH 4 76 #define IST_EDGE_FALLING IST_EDGE 77 #define IST_EDGE_RISING 5 78 #define IST_EDGE_BOTH 6 79 #define IST_SOFT 7 80 81 #ifdef __OLD_INTERRUPT_CODE /* XXX XXX XXX */ 82 83 /* Software interrupt priority levels */ 84 85 #ifdef __HAVE_FAST_SOFTINTS 86 #define SOFTIRQ_CLOCK 0 87 #define SOFTIRQ_BIO 1 88 #define SOFTIRQ_NET 2 89 #define SOFTIRQ_SERIAL 3 90 91 #define SOFTIRQ_BIT(x) (1 << x) 92 #endif 93 94 #include <arm/arm32/psl.h> 95 96 #else /* ! __OLD_INTERRUPT_CODE */ 97 98 #define __NEWINTR /* enables new hooks in cpu_fork()/cpu_switch() */ 99 100 #ifndef _LOCORE 101 102 #include <sys/device.h> 103 #include <sys/queue.h> 104 105 #if defined(_LKM) 106 107 int _splraise(int); 108 int _spllower(int); 109 void splx(int); 110 #ifdef __HAVE_FAST_SOFTINTS 111 void _setsoftintr(int); 112 #endif 113 114 #else /* _LKM */ 115 116 #include "opt_arm_intr_impl.h" 117 118 #if defined(ARM_INTR_IMPL) 119 120 /* 121 * Each board needs to define the following functions: 122 * 123 * int _splraise(int); 124 * int _spllower(int); 125 * void splx(int); 126 * 127 * These may be defined as functions, static inline functions, or macros, 128 * but there must be a _spllower() and splx() defined as functions callable 129 * from assembly language (for cpu_switch()). However, since it's quite 130 * useful to be able to inline splx(), you could do something like the 131 * following: 132 * 133 * in <boardtype>_intr.h: 134 * static inline int 135 * boardtype_splx(int spl) 136 * {...} 137 * 138 * #define splx(nspl) boardtype_splx(nspl) 139 * ... 140 * and in boardtype's machdep code: 141 * 142 * ... 143 * #undef splx 144 * int 145 * splx(int spl) 146 * { 147 * return boardtype_splx(spl); 148 * } 149 */ 150 151 #include ARM_INTR_IMPL 152 153 #else /* ARM_INTR_IMPL */ 154 155 #error ARM_INTR_IMPL not defined. 156 157 #endif /* ARM_INTR_IMPL */ 158 159 #endif /* _LKM */ 160 161 typedef uint8_t ipl_t; 162 typedef struct { 163 ipl_t _ipl; 164 } ipl_cookie_t; 165 166 static inline ipl_cookie_t 167 makeiplcookie(ipl_t ipl) 168 { 169 170 return (ipl_cookie_t){._ipl = ipl}; 171 } 172 173 static inline int 174 splraiseipl(ipl_cookie_t icookie) 175 { 176 177 return _splraise(icookie._ipl); 178 } 179 180 #define spl0() _spllower(IPL_NONE) 181 182 #include <sys/spl.h> 183 184 #endif /* ! _LOCORE */ 185 186 #endif /* __OLD_INTERRUPT_CODE */ 187 188 #endif /* _KERNEL */ 189 190 #endif /* _EVBARM_INTR_H_ */ 191