1 /* $NetBSD: intr.h,v 1.17 1999/11/06 23:05:40 scottr Exp $ */ 2 3 /* 4 * Copyright (C) 1997 Scott Reynolds 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #ifndef _MAC68K_INTR_H_ 31 #define _MAC68K_INTR_H_ 32 33 #include <machine/psl.h> 34 35 #ifdef _KERNEL 36 37 /* spl0 requires checking for software interrupts */ 38 39 /* 40 * This array contains the appropriate PSL_S|PSL_IPL? values 41 * to raise interrupt priority to the requested level. 42 */ 43 extern unsigned short mac68k_ipls[]; 44 45 #define MAC68K_IPL_SOFT 0 46 #define MAC68K_IPL_BIO 1 47 #define MAC68K_IPL_NET 2 48 #define MAC68K_IPL_TTY 3 49 #define MAC68K_IPL_IMP 4 50 #define MAC68K_IPL_AUDIO 5 51 #define MAC68K_IPL_SERIAL 6 52 #define MAC68K_IPL_ADB 7 53 #define MAC68K_IPL_CLOCK 8 54 #define MAC68K_IPL_STATCLOCK 9 55 #define MAC68K_IPL_SCHED 10 56 #define MAC68K_IPL_HIGH 11 57 #define MAC68K_NIPLS 12 58 59 /* These spl calls are _not_ to be used by machine-independent code. */ 60 #define spladb() _splraise(mac68k_ipls[MAC68K_IPL_ADB]) 61 #define splzs() splserial() 62 63 /* 64 * These should be used for: 65 * 1) ensuring mutual exclusion (why use processor level?) 66 * 2) allowing faster devices to take priority 67 */ 68 #define spllowersoftclock() spl1() 69 #define splsoftclock() _splraise(mac68k_ipls[MAC68K_IPL_SOFT]) 70 #define splsoftnet() _splraise(mac68k_ipls[MAC68K_IPL_SOFT]) 71 #define spltty() _splraise(mac68k_ipls[MAC68K_IPL_TTY]) 72 #define splbio() _splraise(mac68k_ipls[MAC68K_IPL_BIO]) 73 #define splnet() _splraise(mac68k_ipls[MAC68K_IPL_NET]) 74 #define splimp() _splraise(mac68k_ipls[MAC68K_IPL_IMP]) 75 #define splaudio() _splraise(mac68k_ipls[MAC68K_IPL_AUDIO]) 76 #define splclock() _splraise(mac68k_ipls[MAC68K_IPL_CLOCK]) 77 #define splstatclock() _splraise(mac68k_ipls[MAC68K_IPL_STATCLOCK]) 78 #define splsched() _splraise(mac68k_ipls[MAC68K_IPL_SCHED]) 79 #define splserial() _splraise(mac68k_ipls[MAC68K_IPL_SERIAL]) 80 #define splhigh() spl7() 81 82 /* watch out for side effects */ 83 #define splx(s) ((s) & PSL_IPL ? _spl(s) : spl0()) 84 85 /* 86 * simulated software interrupt register 87 */ 88 extern volatile u_int8_t ssir; 89 90 #define SIR_NET 0x01 91 #define SIR_CLOCK 0x02 92 #define SIR_SERIAL 0x04 93 #define SIR_DTMGR 0x08 94 #define SIR_ADB 0x10 95 96 #define siron(mask) \ 97 __asm __volatile ( "orb %1,%0" : "=m" (ssir) : "i" (mask)) 98 #define siroff(mask) \ 99 __asm __volatile ( "andb %1,%0" : "=m" (ssir) : "ir" (~(mask))); 100 101 #define setsoftnet() siron(SIR_NET) 102 #define setsoftclock() siron(SIR_CLOCK) 103 #define setsoftserial() siron(SIR_SERIAL) 104 #define setsoftdtmgr() siron(SIR_DTMGR) 105 #define setsoftadb() siron(SIR_ADB) 106 107 /* intr.c */ 108 void intr_init __P((void)); 109 void intr_establish __P((int (*)(void *), void *, int)); 110 void intr_disestablish __P((int)); 111 void intr_dispatch __P((int)); 112 113 /* locore.s */ 114 int spl0 __P((void)); 115 #endif /* _KERNEL */ 116 117 #endif /* _MAC68K_INTR_H_ */ 118