1 /* $NetBSD: intr.h,v 1.8 2007/12/03 15:33:47 ad 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 _IYONIX_INTR_H_ 39 #define _IYONIX_INTR_H_ 40 41 #ifdef _KERNEL 42 43 /* Interrupt priority "levels". */ 44 #define IPL_NONE 0 /* nothing */ 45 #define IPL_SOFTCLOCK 1 /* software clock interrupt */ 46 #define IPL_SOFTBIO 2 /* generic software interrupts */ 47 #define IPL_SOFTNET 3 /* software network interrupt */ 48 #define IPL_SOFTSERIAL 4 /* software serial interrupt */ 49 #define IPL_VM 5 /* memory allocation */ 50 #define IPL_SCHED 6 /* scheduler */ 51 #define IPL_HIGH 6 /* everything */ 52 53 #define NIPL 7 54 55 /* Interrupt sharing types. */ 56 #define IST_NONE 0 /* none */ 57 #define IST_PULSE 1 /* pulsed */ 58 #define IST_EDGE 2 /* edge-triggered */ 59 #define IST_LEVEL 3 /* level-triggered */ 60 61 #define IST_LEVEL_LOW IST_LEVEL 62 #define IST_LEVEL_HIGH 4 63 #define IST_EDGE_FALLING IST_EDGE 64 #define IST_EDGE_RISING 5 65 #define IST_EDGE_BOTH 6 66 67 #define __NEWINTR /* enables new hooks in cpu_fork()/cpu_switch() */ 68 69 #ifndef _LOCORE 70 71 #if defined(_LKM) 72 73 int _splraise(int); 74 int _spllower(int); 75 void splx(int); 76 void _setsoftintr(int); 77 78 #else /* _LKM */ 79 80 #include "opt_arm_intr_impl.h" 81 82 #if defined(ARM_INTR_IMPL) 83 84 /* 85 * Each board needs to define the following functions: 86 * 87 * int _splraise(int); 88 * int _spllower(int); 89 * void splx(int); 90 * void _setsoftintr(int); 91 * 92 * These may be defined as functions, static inline functions, or macros, 93 * but there must be a _spllower() and splx() defined as functions callable 94 * from assembly language (for cpu_switch()). However, since it's quite 95 * useful to be able to inline splx(), you could do something like the 96 * following: 97 * 98 * in <boardtype>_intr.h: 99 * static inline int 100 * boardtype_splx(int spl) 101 * {...} 102 * 103 * #define splx(nspl) boardtype_splx(nspl) 104 * ... 105 * and in boardtype's machdep code: 106 * 107 * ... 108 * #undef splx 109 * int 110 * splx(int spl) 111 * { 112 * return boardtype_splx(spl); 113 * } 114 */ 115 116 #include ARM_INTR_IMPL 117 118 #else /* ARM_INTR_IMPL */ 119 120 #error ARM_INTR_IMPL not defined. 121 122 #endif /* ARM_INTR_IMPL */ 123 124 #endif /* _LKM */ 125 126 typedef uint8_t ipl_t; 127 typedef struct { 128 ipl_t _ipl; 129 } ipl_cookie_t; 130 131 static inline ipl_cookie_t 132 makeiplcookie(ipl_t ipl) 133 { 134 135 return (ipl_cookie_t){._ipl = ipl}; 136 } 137 138 static inline int 139 splraiseipl(ipl_cookie_t icookie) 140 { 141 142 return _splraise(icookie._ipl); 143 } 144 145 #define spl0() _spllower(IPL_NONE) 146 147 #include <sys/spl.h> 148 149 #include <arm/softintr.h> 150 151 #endif /* ! _LOCORE */ 152 153 #endif /* _KERNEL */ 154 155 #endif /* _IYONIX_INTR_H_ */ 156