118 lines
3.9 KiB
C
118 lines
3.9 KiB
C
/* $NetBSD: intr.h,v 1.5 1997/10/09 07:39:10 jtc Exp $ */
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/*-
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* Copyright (c) 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _ATARI_INTR_H_
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#define _ATARI_INTR_H_
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#define IPL_NONE 0 /* disable no interrupts */
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#define IPL_BIO 3 /* disable block I/O interrupts */
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#define IPL_NET 3 /* disable network interrupts */
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#define IPL_TTY 4 /* disable terminal interrupts */
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#define IPL_CLOCK 6 /* disable clock interrupts */
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#define IPL_HIGH 7 /* disable all interrupts */
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#define IST_UNUSABLE -1 /* interrupt cannot be used */
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#define IST_NONE 0 /* none (dummy) */
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#define IST_PULSE 1 /* pulsed */
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#define IST_EDGE 2 /* edge-triggered */
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#define IST_LEVEL 3 /* level-triggered */
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/*
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* spl functions; all but spl0 are done in-line
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*/
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#include <machine/psl.h>
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#define _spl(s) \
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({ \
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register int _spl_r; \
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\
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__asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
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"&=d" (_spl_r) : "di" (s)); \
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_spl_r; \
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})
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#define _splraise(s) \
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({ \
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int _spl_r; \
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\
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__asm __volatile (" \
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clrl d0 ; \
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movw sr,d0 ; \
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movl d0,%0 ; \
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andw #0x700,d0 ; \
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movw %1,d1 ; \
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andw #0x700,d1 ; \
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cmpw d0,d1 ; \
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jle 1f ; \
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movw %1,sr ; \
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1:" : \
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"&=d" (_spl_r) : \
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"di" (s) : \
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"d0", "d1"); \
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_spl_r; \
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})
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/* spl0 requires checking for software interrupts */
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#define spl1() _spl(PSL_S|PSL_IPL1)
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#define spl2() _spl(PSL_S|PSL_IPL2)
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#define spl3() _spl(PSL_S|PSL_IPL3)
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#define spl4() _spl(PSL_S|PSL_IPL4)
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#define spl5() _spl(PSL_S|PSL_IPL5)
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#define spl6() _spl(PSL_S|PSL_IPL6)
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#define spl7() _spl(PSL_S|PSL_IPL7)
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#define splnone() spl0()
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#define splsoftclock() spl1()
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#define splsoftnet() spl1()
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#define splbio() _splraise(PSL_S|PSL_IPL3)
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#define splnet() _splraise(PSL_S|PSL_IPL3)
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#define spltty() _splraise(PSL_S|PSL_IPL4)
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#define splimp() _splraise(PSL_S|PSL_IPL4)
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#define splclock() spl6()
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#define splstatclock() spl6()
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#define splvm() spl6()
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#define splhigh() spl7()
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#define splsched() spl7()
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#define splx(s) ((s) & PSL_IPL ? _spl(s) : spl0())
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#ifdef _KERNEL
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int spl0 __P((void));
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#endif /* _KERNEL */
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#endif /* _ATARI_INTR_H_ */
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