1 /* $NetBSD: intr.h,v 1.25 2024/01/19 20:55:42 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997, 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Leo Weppelman. 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 _ATARI_INTR_H_ 33 #define _ATARI_INTR_H_ 34 35 #define IPL_NONE 0 /* disable no interrupts */ 36 #define IPL_SOFTCLOCK 1 37 #define IPL_SOFTBIO 2 38 #define IPL_SOFTNET 3 39 #define IPL_SOFTSERIAL 4 40 #define IPL_VM 5 41 #define IPL_SCHED 6 42 #define IPL_HIGH 7 43 #define NIPL 8 44 45 #define IST_UNUSABLE -1 /* interrupt cannot be used */ 46 #define IST_NONE 0 /* none (dummy) */ 47 #define IST_PULSE 1 /* pulsed */ 48 #define IST_EDGE 2 /* edge-triggered */ 49 #define IST_LEVEL 3 /* level-triggered */ 50 51 #if defined(_KERNEL) || defined(_KMEMUSER) 52 typedef struct { 53 uint16_t _psl; 54 } ipl_cookie_t; 55 #endif 56 57 /* 58 * spl functions; all but spl0 are done in-line 59 */ 60 #include <machine/psl.h> 61 62 /* spl0 requires checking for software interrupts */ 63 64 #define splsoftclock() splraise1() 65 #define splsoftbio() splraise1() 66 #define splsoftnet() splraise1() 67 #define splsoftserial() splraise1() 68 #define splvm() splraise4() 69 #define splsched() splraise6() 70 #define splhigh() spl7() 71 #define splx(s) ((s) & PSL_IPL ? _spl(s) : spl0()) 72 73 #ifdef _KERNEL 74 int spl0(void); 75 76 extern const uint16_t ipl2psl_table[NIPL]; 77 extern volatile unsigned int intr_depth; 78 79 typedef int ipl_t; 80 81 static inline ipl_cookie_t 82 makeiplcookie(ipl_t ipl) 83 { 84 85 return (ipl_cookie_t){._psl = ipl2psl_table[ipl]}; 86 } 87 88 static inline int 89 splraiseipl(ipl_cookie_t icookie) 90 { 91 92 return _splraise(icookie._psl); 93 } 94 95 #include <sys/queue.h> 96 #include <machine/cpu.h> /* XXX: for clockframe */ 97 98 struct clockframe; 99 100 #define AUTO_VEC 0x0001 /* We're dealing with an auto-vector */ 101 #define USER_VEC 0x0002 /* We're dealing with an user-vector */ 102 103 #define FAST_VEC 0x0010 /* Fast, stash right into vector-table */ 104 #define ARG_CLOCKFRAME 0x0020 /* Supply clockframe as an argument */ 105 106 /* 107 * Interrupt handler chains. intr_establish() inserts a handler into 108 * the list. The handler is called with its (single) argument or with a 109 * 'standard' clockframe. This depends on 'ih_type'. 110 */ 111 typedef int (*hw_ifun_t)(void *, int); 112 113 struct intrhand { 114 LIST_ENTRY(intrhand) ih_link; 115 hw_ifun_t ih_fun; 116 void *ih_arg; 117 int ih_type; 118 int ih_pri; 119 int ih_vector; 120 u_int *ih_intrcnt; 121 }; 122 123 void intr_init(void); 124 struct intrhand *intr_establish(int, int, int, hw_ifun_t, void *); 125 int intr_disestablish(struct intrhand *); 126 void intr_dispatch(struct clockframe); 127 void intr_glue(void); 128 129 /* 130 * Exported by intrcnt.h 131 */ 132 extern u_long autovects[]; 133 extern u_int intrcnt_auto[]; 134 extern u_long uservects[]; 135 extern u_int intrcnt_user[]; 136 137 #endif /* _KERNEL */ 138 139 #endif /* _ATARI_INTR_H_ */ 140