1 /* $NetBSD: intr.h,v 1.13 2010/04/17 13:36:21 nonaka Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Mark Brinicombe. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Mark Brinicombe 18 * for the NetBSD Project. 19 * 4. The name of the company nor the name of the author may be used to 20 * endorse or promote products derived from this software without specific 21 * prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef _HPCARM_INTR_H_ 37 #define _HPCARM_INTR_H_ 38 39 #ifdef _KERNEL 40 41 #ifdef __HAVE_FAST_SOFTINTS 42 #define IPL_NONE 0 43 #define IPL_SOFTCLOCK 1 44 #define IPL_SOFTBIO 2 45 #define IPL_SOFTNET 3 46 #define IPL_SOFTSERIAL 4 47 #define IPL_VM 5 48 #define IPL_SCHED 6 49 #define IPL_HIGH 7 50 51 #define NIPL 8 52 #else 53 #define IPL_NONE 0 54 #define IPL_SOFTCLOCK IPL_NONE 55 #define IPL_SOFTBIO IPL_NONE 56 #define IPL_SOFTNET IPL_NONE 57 #define IPL_SOFTSERIAL IPL_NONE 58 #define IPL_VM 1 59 #define IPL_SCHED 2 60 #define IPL_HIGH 3 61 62 #define NIPL 4 63 #endif 64 65 #define IST_UNUSABLE -1 /* interrupt cannot be used */ 66 #define IST_NONE 0 /* none (dummy) */ 67 #define IST_PULSE 1 /* pulsed */ 68 #define IST_EDGE 2 /* edge-triggered */ 69 #define IST_LEVEL 3 /* level-triggered */ 70 71 #define IST_LEVEL_LOW IST_LEVEL 72 #define IST_LEVEL_HIGH 4 73 #define IST_EDGE_FALLING IST_EDGE 74 #define IST_EDGE_RISING 5 75 #define IST_EDGE_BOTH 6 76 77 #ifdef __OLD_INTERRUPT_CODE /* XXX XXX XXX */ 78 79 #include <machine/irqhandler.h> 80 #include <arm/arm32/psl.h> 81 82 #else /* !__OLD_INTERRUPT_CODE */ 83 84 #define __NEWINTR /* enables new hooks in cpu_fork()/cpu_switch() */ 85 86 #ifndef _LOCORE 87 88 #include <sys/device.h> 89 #include <sys/queue.h> 90 91 #if defined(_LKM) 92 93 int _splraise(int); 94 int _spllower(int); 95 void splx(int); 96 void _setsoftintr(int); 97 98 #else /* _LKM */ 99 100 #include "opt_arm_intr_impl.h" 101 102 #if defined(ARM_INTR_IMPL) 103 104 /* 105 * Each board needs to define the following functions: 106 * 107 * int _splraise(int); 108 * int _spllower(int); 109 * void splx(int); 110 * void _setsoftintr(int); 111 * 112 * These may be defined as functions, static inline functions, or macros, 113 * but there must be a _spllower() and splx() defined as functions callable 114 * from assembly language (for cpu_switch()). However, since it's quite 115 * useful to be able to inline splx(), you could do something like the 116 * following: 117 * 118 * in <boardtype>_intr.h: 119 * static inline int 120 * boardtype_splx(int spl) 121 * {...} 122 * 123 * #define splx(nspl) boardtype_splx(nspl) 124 * ... 125 * and in boardtype's machdep code: 126 * 127 * ... 128 * #undef splx 129 * int 130 * splx(int spl) 131 * { 132 * return boardtype_splx(spl); 133 * } 134 */ 135 136 #include ARM_INTR_IMPL 137 138 #else /* ARM_INTR_IMPL */ 139 140 #error ARM_INTR_IMPL not defined. 141 142 #endif /* ARM_INTR_IMPL */ 143 144 #endif /* _LKM */ 145 146 #define splsoft() _splraise(IPL_SOFT) 147 148 typedef uint8_t ipl_t; 149 typedef struct { 150 ipl_t _ipl; 151 } ipl_cookie_t; 152 153 static inline ipl_cookie_t 154 makeiplcookie(ipl_t ipl) 155 { 156 157 return (ipl_cookie_t){._ipl = ipl}; 158 } 159 160 static inline int 161 splraiseipl(ipl_cookie_t icookie) 162 { 163 164 return _splraise(icookie._ipl); 165 } 166 167 #define spl0() _spllower(IPL_NONE) 168 169 #include <sys/spl.h> 170 171 #endif /* ! _LOCORE */ 172 173 #endif /* __OLD_INTERRUPT_CODE */ 174 175 #endif /* _KERNEL */ 176 177 #endif /* _HPCARM_INTR_H */ 178