1 /* $NetBSD: intr.h,v 1.2 2018/04/19 21:50:07 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Matt Thomas of 3am Software Foundry. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _OR1K_INTR_H_ 33 #define _OR1K_INTR_H_ 34 35 #ifdef _LOCORE 36 #error use "assym.h" 37 #endif 38 39 #ifdef _KERNEL 40 41 #ifdef _KERNEL_OPT 42 #include "opt_multiprocessor.h" 43 #endif 44 45 #ifdef MULTIPROCESSOR 46 #define __HAVE_PREEMPTION 1 47 #endif 48 49 /* Interrupt priority "levels". */ 50 #define IPL_NONE 0 /* nothing */ 51 #define IPL_SOFTCLOCK 1 /* clock */ 52 #define IPL_SOFTBIO 2 /* block I/O */ 53 #define IPL_SOFTNET 3 /* software network interrupt */ 54 #define IPL_SOFTSERIAL 4 /* software serial interrupt */ 55 #define IPL_VM 5 /* memory allocation */ 56 #define IPL_SCHED 6 /* clock interrupt */ 57 #define IPL_HIGH 7 /* everything */ 58 59 #define NIPL 8 60 61 /* Interrupt sharing types. */ 62 #define IST_NONE 0 /* none */ 63 #define IST_PULSE 1 /* pulsed */ 64 #define IST_EDGE 2 /* edge-triggered */ 65 #define IST_LEVEL 3 /* level-triggered */ 66 67 #define IST_LEVEL_LOW IST_LEVEL 68 #define IST_LEVEL_HIGH 4 69 #define IST_EDGE_FALLING IST_EDGE 70 #define IST_EDGE_RISING 5 71 #define IST_EDGE_BOTH 6 72 #define IST_SOFT 7 73 74 #include <or1k/pic/picvar.h> 75 76 static __inline void 77 spl0(void) 78 { 79 (void)_spllower(IPL_NONE); 80 } 81 82 static __inline int 83 splsoftclock(void) 84 { 85 return _splraise(IPL_SOFTCLOCK); 86 } 87 88 static __inline int 89 splsoftbio(void) 90 { 91 return _splraise(IPL_SOFTBIO); 92 } 93 94 static __inline int 95 splsoftnet(void) 96 { 97 return _splraise(IPL_SOFTNET); 98 } 99 100 static __inline int 101 splsoftserial(void) 102 { 103 return _splraise(IPL_SOFTSERIAL); 104 } 105 106 static __inline int 107 splvm(void) 108 { 109 return _splraise(IPL_VM); 110 } 111 112 static __inline int 113 splsched(void) 114 { 115 return _splraise(IPL_SCHED); 116 } 117 118 static __inline int 119 splhigh(void) 120 { 121 return _splraise(IPL_HIGH); 122 } 123 124 typedef uint8_t ipl_t; 125 typedef struct { 126 ipl_t _ipl; 127 } ipl_cookie_t; 128 129 static __inline ipl_cookie_t 130 makeiplcookie(ipl_t ipl) 131 { 132 133 return (ipl_cookie_t){._ipl = ipl}; 134 } 135 136 static __inline int 137 splraiseipl(ipl_cookie_t icookie) 138 { 139 140 return _splraise(icookie._ipl); 141 } 142 143 #endif /* _KERNEL */ 144 145 #endif /* _OR1K_INTR_H_ */ 146