intr.h revision 1.16
1 /* $NetBSD: intr.h,v 1.16 2006/12/21 15:55:22 yamt Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997, 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _HP300_INTR_H_ 40 #define _HP300_INTR_H_ 41 42 #include <sys/device.h> 43 #include <sys/queue.h> 44 #include <machine/psl.h> 45 46 /* 47 * Interrupt "levels". These are a more abstract representation 48 * of interrupt levels, and do not have the same meaning as m68k 49 * CPU interrupt levels. They serve the following purposes: 50 * 51 * - properly order ISRs in the list for that CPU ipl 52 * - compute CPU PSL values for the spl*() calls. 53 * - used to create cookie for the splraiseipl(). 54 */ 55 #define IPL_NONE 0 56 #define IPL_SOFTCLOCK 1 57 #define IPL_SOFTNET 2 58 #define IPL_SOFTSERIAL 3 59 #define IPL_SOFT 4 /* disable all software interrupts */ 60 #define IPL_BIO 5 61 #define IPL_NET 6 62 #define IPL_TTY 7 63 #define IPL_TTYNOBUF 8 /* IPL_TTY + higher ISR priority */ 64 #define IPL_VM 9 65 #define IPL_CLOCK 10 66 #define IPL_STATCLOCK IPL_CLOCK 67 #define IPL_HIGH 11 68 #define IPL_SCHED IPL_HIGH 69 #define IPL_LOCK IPL_HIGH 70 #define NIPL 12 71 72 #define _IPL_SOFTSERIAL 0 /* serial software interrupts */ 73 #define _IPL_SOFTNET 1 /* network software interrupts */ 74 #define _IPL_SOFTCLOCK 2 /* clock software interrupts */ 75 #define _IPL_SOFT 3 /* other software interrupts */ 76 #define IPL_NSOFT 4 77 78 #define IPL_SOFTNAMES { \ 79 "serial", \ 80 "net", \ 81 "clock", \ 82 "misc", \ 83 } 84 85 /* 86 * Convert PSL values to m68k CPU IPLs and vice-versa. 87 * Note: CPU IPL values are different from IPL_* used by splraiseipl(). 88 */ 89 #define PSLTOIPL(x) (((x) >> 8) & 0xf) 90 #define IPLTOPSL(x) ((((x) & 0xf) << 8) | PSL_S) 91 92 #ifdef _KERNEL 93 94 extern u_short hp300_ipl2psl[]; 95 96 typedef int ipl_t; 97 typedef struct { 98 int _psl; 99 } ipl_cookie_t; 100 101 static inline ipl_cookie_t 102 makeiplcookie(ipl_t ipl) 103 { 104 105 return (ipl_cookie_t){._psl = hp300_ipl2psl[ipl]}; 106 } 107 108 static inline int 109 splraiseipl(ipl_cookie_t icookie) 110 { 111 112 return _splraise(icookie._psl); 113 } 114 115 /* These spl calls are _not_ to be used by machine-independent code. */ 116 #define splhil() splraise1() 117 #define splkbd() splhil() 118 119 /* These spl calls are used by machine-independent code. */ 120 /* spl0 requires checking for software interrupts */ 121 #define spllowersoftclock() spl1() 122 #define splsoft() splraise1() 123 #define splsoftclock() splsoft() 124 #define splsoftnet() splsoft() 125 #define splsoftserial() splsoft() 126 #define splbio() _splraise(hp300_ipl2psl[IPL_BIO]) 127 #define splnet() _splraise(hp300_ipl2psl[IPL_NET]) 128 #define spltty() _splraise(hp300_ipl2psl[IPL_TTY]) 129 #define splserial() _splraise(hp300_ipl2psl[IPL_TTY]) 130 #define splvm() _splraise(hp300_ipl2psl[IPL_VM]) 131 #define splclock() spl6() 132 #define splstatclock() splclock() 133 #define splhigh() spl7() 134 #define splsched() spl7() 135 #define spllock() spl7() 136 137 /* watch out for side effects */ 138 #define splx(s) ((s) & PSL_IPL ? _spl((s)) : spl0()) 139 140 struct hp300_intrhand { 141 LIST_ENTRY(hp300_intrhand) ih_q; 142 int (*ih_fn)(void *); 143 void *ih_arg; 144 int ih_ipl; 145 int ih_priority; 146 }; 147 148 struct hp300_intr { 149 LIST_HEAD(, hp300_intrhand) hi_q; 150 struct evcnt hi_evcnt; 151 }; 152 153 /* 154 * Software Interrupts. 155 */ 156 157 struct hp300_soft_intrhand { 158 LIST_ENTRY(hp300_soft_intrhand) sih_q; 159 struct hp300_soft_intr *sih_intrhead; 160 void (*sih_fn)(void *); 161 void *sih_arg; 162 volatile int sih_pending; 163 }; 164 165 struct hp300_soft_intr { 166 LIST_HEAD(, hp300_soft_intrhand) hsi_q; 167 struct evcnt hsi_evcnt; 168 uint8_t hsi_ipl; 169 }; 170 171 void *softintr_establish(int, void (*)(void *), void *); 172 void softintr_disestablish(void *); 173 void softintr_init(void); 174 void softintr_dispatch(void); 175 176 extern volatile uint8_t ssir; 177 #define setsoft(x) ssir |= (1<<(x)) 178 179 #define softintr_schedule(arg) \ 180 do { \ 181 struct hp300_soft_intrhand *__sih = (arg); \ 182 __sih->sih_pending = 1; \ 183 setsoft(__sih->sih_intrhead->hsi_ipl); \ 184 } while (0) 185 186 /* XXX For legacy software interrupts */ 187 extern struct hp300_soft_intrhand *softnet_intrhand; 188 #define setsoftnet() softintr_schedule(softnet_intrhand) 189 190 /* locore.s */ 191 int spl0(void); 192 193 /* intr.c */ 194 void intr_init(void); 195 void *intr_establish(int (*)(void *), void *, int, int); 196 void intr_disestablish(void *); 197 void intr_dispatch(int); 198 void intr_printlevels(void); 199 void netintr(void); 200 201 #endif /* _KERNEL */ 202 203 #endif /* _HP300_INTR_H_ */ 204
Indexes created Sat Sep 27 14:09:57 GMT 2025