1 /* $NetBSD: intr.h,v 1.21 2009/07/08 12:23:10 tsutsui 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 /* 52 * spl functions; all but spl0 are done in-line 53 */ 54 #include <machine/psl.h> 55 56 /* spl0 requires checking for software interrupts */ 57 58 #define splsoftclock() splraise1() 59 #define splsoftbio() splraise1() 60 #define splsoftnet() splraise1() 61 #define splsoftserial() splraise1() 62 #define splvm() splraise4() 63 #define splsched() splraise6() 64 #define splhigh() spl7() 65 #define splx(s) ((s) & PSL_IPL ? _spl(s) : spl0()) 66 67 #ifdef _KERNEL 68 int spl0(void); 69 70 extern const uint16_t ipl2psl_table[NIPL]; 71 extern int idepth; 72 73 typedef int ipl_t; 74 typedef struct { 75 uint16_t _psl; 76 } ipl_cookie_t; 77 78 static inline ipl_cookie_t 79 makeiplcookie(ipl_t ipl) 80 { 81 82 return (ipl_cookie_t){._psl = ipl2psl_table[ipl]}; 83 } 84 85 static inline int 86 splraiseipl(ipl_cookie_t icookie) 87 { 88 89 return _splraise(icookie._psl); 90 } 91 92 #include <sys/queue.h> 93 #include <machine/cpu.h> /* XXX: for clockframe */ 94 95 struct clockframe; 96 97 #define AUTO_VEC 0x0001 /* We're dealing with an auto-vector */ 98 #define USER_VEC 0x0002 /* We're dealing with an user-vector */ 99 100 #define FAST_VEC 0x0010 /* Fast, stash right into vector-table */ 101 #define ARG_CLOCKFRAME 0x0020 /* Supply clockframe as an argument */ 102 103 /* 104 * Interrupt handler chains. intr_establish() inserts a handler into 105 * the list. The handler is called with its (single) argument or with a 106 * 'standard' clockframe. This depends on 'ih_type'. 107 */ 108 typedef int (*hw_ifun_t)(void *, int); 109 110 struct intrhand { 111 LIST_ENTRY(intrhand) ih_link; 112 hw_ifun_t ih_fun; 113 void *ih_arg; 114 int ih_type; 115 int ih_pri; 116 int ih_vector; 117 u_long *ih_intrcnt; 118 }; 119 120 void intr_init(void); 121 struct intrhand *intr_establish(int, int, int, hw_ifun_t, void *); 122 int intr_disestablish(struct intrhand *); 123 void intr_dispatch(struct clockframe); 124 void intr_glue(void); 125 126 /* 127 * Exported by intrcnt.h 128 */ 129 extern u_long autovects[]; 130 extern u_long intrcnt_auto[]; 131 extern u_long uservects[]; 132 extern u_long intrcnt_user[]; 133 134 #endif /* _KERNEL */ 135 136 #endif /* _ATARI_INTR_H_ */ 137