1 /* $NetBSD: intr.h,v 1.19 2008/01/06 01:37:58 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 80 #ifdef __OLD_INTERRUPT_CODE /* XXX XXX XXX */ 81 82 /* Software interrupt priority levels */ 83 84 #ifdef __HAVE_FAST_SOFTINTS 85 #define SOFTIRQ_CLOCK 0 86 #define SOFTIRQ_BIO 1 87 #define SOFTIRQ_NET 2 88 #define SOFTIRQ_SERIAL 3 89 90 #define SOFTIRQ_BIT(x) (1 << x) 91 #endif 92 93 #include <arm/arm32/psl.h> 94 95 #else /* ! __OLD_INTERRUPT_CODE */ 96 97 #define __NEWINTR /* enables new hooks in cpu_fork()/cpu_switch() */ 98 99 #ifndef _LOCORE 100 101 #include <sys/device.h> 102 #include <sys/queue.h> 103 104 #if defined(_LKM) 105 106 int _splraise(int); 107 int _spllower(int); 108 void splx(int); 109 #ifdef __HAVE_FAST_SOFTINTS 110 void _setsoftintr(int); 111 #endif 112 113 #else /* _LKM */ 114 115 #include "opt_arm_intr_impl.h" 116 117 #if defined(ARM_INTR_IMPL) 118 119 /* 120 * Each board needs to define the following functions: 121 * 122 * int _splraise(int); 123 * int _spllower(int); 124 * void splx(int); 125 * 126 * These may be defined as functions, static inline functions, or macros, 127 * but there must be a _spllower() and splx() defined as functions callable 128 * from assembly language (for cpu_switch()). However, since it's quite 129 * useful to be able to inline splx(), you could do something like the 130 * following: 131 * 132 * in <boardtype>_intr.h: 133 * static inline int 134 * boardtype_splx(int spl) 135 * {...} 136 * 137 * #define splx(nspl) boardtype_splx(nspl) 138 * ... 139 * and in boardtype's machdep code: 140 * 141 * ... 142 * #undef splx 143 * int 144 * splx(int spl) 145 * { 146 * return boardtype_splx(spl); 147 * } 148 */ 149 150 #include ARM_INTR_IMPL 151 152 #else /* ARM_INTR_IMPL */ 153 154 #error ARM_INTR_IMPL not defined. 155 156 #endif /* ARM_INTR_IMPL */ 157 158 #endif /* _LKM */ 159 160 typedef uint8_t ipl_t; 161 typedef struct { 162 ipl_t _ipl; 163 } ipl_cookie_t; 164 165 static inline ipl_cookie_t 166 makeiplcookie(ipl_t ipl) 167 { 168 169 return (ipl_cookie_t){._ipl = ipl}; 170 } 171 172 static inline int 173 splraiseipl(ipl_cookie_t icookie) 174 { 175 176 return _splraise(icookie._ipl); 177 } 178 179 #define spl0() _spllower(IPL_NONE) 180 181 #include <sys/spl.h> 182 183 #endif /* ! _LOCORE */ 184 185 #endif /* __OLD_INTERRUPT_CODE */ 186 187 #endif /* _KERNEL */ 188 189 #endif /* _EVBARM_INTR_H_ */ 190