1 /* $NetBSD: intr.h,v 1.18 2012/07/28 23:12:52 matt 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 #define IPL_NONE 0 42 #define IPL_SOFTCLOCK 1 43 #define IPL_SOFTBIO 2 44 #define IPL_SOFTNET 3 45 #define IPL_SOFTSERIAL 4 46 #define IPL_VM 5 47 #define IPL_SCHED 6 48 #define IPL_HIGH 7 49 50 #define NIPL 8 51 52 #define IST_UNUSABLE -1 /* interrupt cannot be used */ 53 #define IST_NONE 0 /* none (dummy) */ 54 #define IST_PULSE 1 /* pulsed */ 55 #define IST_EDGE 2 /* edge-triggered */ 56 #define IST_LEVEL 3 /* level-triggered */ 57 58 #define IST_LEVEL_LOW IST_LEVEL 59 #define IST_LEVEL_HIGH 4 60 #define IST_EDGE_FALLING IST_EDGE 61 #define IST_EDGE_RISING 5 62 #define IST_EDGE_BOTH 6 63 64 #ifdef __OLD_INTERRUPT_CODE /* XXX XXX XXX */ 65 66 #include <machine/irqhandler.h> 67 #include <arm/arm32/psl.h> 68 69 #else /* !__OLD_INTERRUPT_CODE */ 70 71 #ifndef _LOCORE 72 73 #include <sys/queue.h> 74 75 #if defined(_LKM) 76 77 int _splraise(int); 78 int _spllower(int); 79 void splx(int); 80 void _setsoftintr(int); 81 82 #else /* _LKM */ 83 84 #include "opt_arm_intr_impl.h" 85 86 #if defined(ARM_INTR_IMPL) 87 88 /* 89 * Each board needs to define the following functions: 90 * 91 * int _splraise(int); 92 * int _spllower(int); 93 * void splx(int); 94 * void _setsoftintr(int); 95 * 96 * These may be defined as functions, static inline functions, or macros, 97 * but there must be a _spllower() and splx() defined as functions callable 98 * from assembly language (for cpu_switch()). However, since it's quite 99 * useful to be able to inline splx(), you could do something like the 100 * following: 101 * 102 * in <boardtype>_intr.h: 103 * static inline int 104 * boardtype_splx(int spl) 105 * {...} 106 * 107 * #define splx(nspl) boardtype_splx(nspl) 108 * ... 109 * and in boardtype's machdep code: 110 * 111 * ... 112 * #undef splx 113 * int 114 * splx(int spl) 115 * { 116 * return boardtype_splx(spl); 117 * } 118 */ 119 120 #include ARM_INTR_IMPL 121 122 #else /* ARM_INTR_IMPL */ 123 124 #error ARM_INTR_IMPL not defined. 125 126 #endif /* ARM_INTR_IMPL */ 127 128 #endif /* _LKM */ 129 130 #define splsoft() _splraise(IPL_SOFT) 131 132 typedef uint8_t ipl_t; 133 typedef struct { 134 ipl_t _ipl; 135 } ipl_cookie_t; 136 137 static inline ipl_cookie_t 138 makeiplcookie(ipl_t ipl) 139 { 140 141 return (ipl_cookie_t){._ipl = ipl}; 142 } 143 144 static inline int 145 splraiseipl(ipl_cookie_t icookie) 146 { 147 148 return _splraise(icookie._ipl); 149 } 150 151 #define spl0() _spllower(IPL_NONE) 152 153 #include <sys/spl.h> 154 155 #endif /* ! _LOCORE */ 156 157 #endif /* __OLD_INTERRUPT_CODE */ 158 159 #endif /* _KERNEL */ 160 161 #endif /* _HPCARM_INTR_H */ 162