1 /* $NetBSD: intr.h,v 1.3 1997/06/05 19:38:16 leo Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the NetBSD 18 * Foundation, Inc. and its contributors. 19 * 4. Neither the name of The NetBSD Foundation nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE 27 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #ifndef _ATARI_INTR_H_ 37 #define _ATARI_INTR_H_ 38 39 #define IPL_NONE 0 /* disable no interrupts */ 40 #define IPL_BIO 3 /* disable block I/O interrupts */ 41 #define IPL_NET 3 /* disable network interrupts */ 42 #define IPL_TTY 4 /* disable terminal interrupts */ 43 #define IPL_CLOCK 6 /* disable clock interrupts */ 44 #define IPL_HIGH 7 /* disable all interrupts */ 45 46 #define IST_UNUSABLE -1 /* interrupt cannot be used */ 47 #define IST_NONE 0 /* none (dummy) */ 48 #define IST_PULSE 1 /* pulsed */ 49 #define IST_EDGE 2 /* edge-triggered */ 50 #define IST_LEVEL 3 /* level-triggered */ 51 52 /* 53 * spl functions; all but spl0 are done in-line 54 */ 55 #include <machine/psl.h> 56 57 #define _spl(s) \ 58 ({ \ 59 register int _spl_r; \ 60 \ 61 __asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ 62 "&=d" (_spl_r) : "di" (s)); \ 63 _spl_r; \ 64 }) 65 66 #define _splraise(s) \ 67 ({ \ 68 register int _spl_r; \ 69 \ 70 __asm __volatile ("clrl %0; movew sr,%0;" : "&=d" (_spl_r) : ); \ 71 if ((_spl_r & PSL_IPL) < ((s) & PSL_IPL)) \ 72 __asm __volatile ("movew %0,sr;" : : "di" (s)); \ 73 _spl_r; \ 74 }) 75 76 /* spl0 requires checking for software interrupts */ 77 #define spl1() _spl(PSL_S|PSL_IPL1) 78 #define spl2() _spl(PSL_S|PSL_IPL2) 79 #define spl3() _spl(PSL_S|PSL_IPL3) 80 #define spl4() _spl(PSL_S|PSL_IPL4) 81 #define spl5() _spl(PSL_S|PSL_IPL5) 82 #define spl6() _spl(PSL_S|PSL_IPL6) 83 #define spl7() _spl(PSL_S|PSL_IPL7) 84 85 #define splnone() spl0() 86 #define splsoftclock() spl1() 87 #define splsoftnet() spl1() 88 89 #define splbio() _splraise(PSL_S|PSL_IPL3) 90 #define splnet() _splraise(PSL_S|PSL_IPL3) 91 #define spltty() _splraise(PSL_S|PSL_IPL4) 92 #define splimp() _splraise(PSL_S|PSL_IPL4) 93 94 #define splclock() spl6() 95 #define splstatclock() spl6() 96 #define splvm() spl6() 97 #define splhigh() spl7() 98 #define splsched() spl7() 99 100 #define splx(s) (s & PSL_IPL ? _spl(s) : spl0()) 101 102 #ifdef _KERNEL 103 int spl0 __P((void)); 104 #endif /* _KERNEL */ 105 106 #endif /* _ATARI_INTR_H_ */ 107 108