intr.h revision 1.6
1 /* $NetBSD: intr.h,v 1.6 2000/12/10 18:43:02 scw Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 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 and Steve C. Woodford. 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 _MVME68K_INTR_H 40 #define _MVME68K_INTR_H 41 42 #include <sys/device.h> 43 #include <sys/queue.h> 44 #include <machine/psl.h> 45 46 /* 47 * These are identical to the values used by hp300, but are not meaningful 48 * to mvme68k code at this time. 49 */ 50 #define IPL_NONE 0 /* disable only this interrupt */ 51 #define IPL_BIO 1 /* disable block I/O interrupts */ 52 #define IPL_NET 2 /* disable network interrupts */ 53 #define IPL_TTY 3 /* disable terminal interrupts */ 54 #define IPL_TTYNOBUF 4 /* IPL_TTY + higher ISR priority */ 55 #define IPL_SERIAL 4 /* disable serial interrupts */ 56 #define IPL_CLOCK 5 /* disable clock interrupts */ 57 #define IPL_HIGH 6 /* disable all interrupts */ 58 59 /* Copied from alpha/include/intr.h */ 60 #define IPL_SOFTSERIAL 0 /* serial software interrupts */ 61 #define IPL_SOFTNET 1 /* network software interrupts */ 62 #define IPL_SOFTCLOCK 2 /* clock software interrupts */ 63 #define IPL_SOFT 3 /* other software interrupts */ 64 #define IPL_NSOFT 4 65 66 #define IPL_SOFTNAMES { \ 67 "serial", \ 68 "net", \ 69 "clock", \ 70 "misc", \ 71 } 72 73 #ifdef _KERNEL 74 /* spl0 requires checking for software interrupts */ 75 76 #define spllowersoftclock() spl1() 77 #define splsoft() splraise1() 78 #define splsoftclock() splsoft() 79 #define splsoftnet() splsoft() 80 #define splsoftserial() splsoft() 81 #define splbio() splraise2() 82 #define splnet() splraise3() 83 #define spltty() splraise3() 84 #define splimp() splraise3() 85 #define splserial() splraise4() 86 #define splclock() splraise5() 87 #define splstatclock() splraise5() 88 #define splvm() splraise5() 89 #define splhigh() spl7() 90 #define splsched() spl7() 91 #define spllock() spl7() 92 93 #ifndef _LOCORE 94 95 /* 96 * Simulated software interrupt register 97 * This is cleared to zero to indicate a soft interrupt is pending 98 * (Yes, it's a bit bizarre, but it allows the use of the m68k's `tas' 99 * instruction so we can avoid masking interrupts elsewhere.) 100 */ 101 extern volatile unsigned char ssir; 102 103 extern void mvme68k_dossir(void); 104 105 static __inline void 106 splx(int sr) 107 { 108 109 if ((u_int16_t)sr < (u_int16_t)(PSL_IPL1|PSL_S) && ssir == 0) 110 mvme68k_dossir(); 111 else 112 __asm __volatile("movw %0,%%sr" : : "di" (sr)); 113 } 114 115 static __inline int 116 spl0(void) 117 { 118 int sr; 119 120 __asm __volatile("movw %%sr,%0" : "=d" (sr)); 121 122 if (ssir == 0) 123 mvme68k_dossir(); 124 else 125 __asm __volatile("movw %0,%%sr" : : "i" (PSL_LOWIPL)); 126 127 return sr; 128 } 129 130 131 #define setsoft(x) x = 0 132 133 #define __GENERIC_SOFT_INTERRUPTS 134 struct mvme68k_soft_intrhand { 135 LIST_ENTRY(mvme68k_soft_intrhand) sih_q; 136 struct mvme68k_soft_intr *sih_intrhead; 137 void (*sih_fn)(void *); 138 void *sih_arg; 139 volatile int sih_pending; 140 }; 141 142 struct mvme68k_soft_intr { 143 LIST_HEAD(, mvme68k_soft_intrhand) msi_q; 144 struct evcnt msi_evcnt; 145 volatile unsigned char msi_ssir; 146 }; 147 148 void *softintr_establish(int, void (*)(void *), void *); 149 void softintr_disestablish(void *); 150 void softintr_init(void); 151 void softintr_dispatch(void); 152 153 #define softintr_schedule(arg) \ 154 do { \ 155 struct mvme68k_soft_intrhand *__sih = (arg); \ 156 __sih->sih_pending = 1; \ 157 setsoft(__sih->sih_intrhead->msi_ssir); \ 158 setsoft(ssir); \ 159 } while (0) 160 161 /* XXX For legacy software interrupts */ 162 extern struct mvme68k_soft_intrhand *softnet_intrhand; 163 extern struct mvme68k_soft_intrhand *softclock_intrhand; 164 165 #define setsoftnet() softintr_schedule(softnet_intrhand) 166 #define setsoftclock() softintr_schedule(softclock_intrhand) 167 168 #endif /* !_LOCORE */ 169 #endif /* _KERNEL */ 170 171 #endif /* _MVME68K_INTR_H */ 172
Indexes created Thu Sep 25 16:09:42 GMT 2025