NetBSD/sys/arch/atari/include/intr.h

120 lines
4.1 KiB
C

/* $NetBSD: intr.h,v 1.7 1998/07/18 21:27:26 is Exp $ */
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _ATARI_INTR_H_
#define _ATARI_INTR_H_
#define IPL_NONE 0 /* disable no interrupts */
#define IPL_BIO (PSL_S|PSL_IPL3) /* disable block I/O interrupts */
#define IPL_NET (PSL_S|PSL_IPL3) /* disable network interrupts */
#define IPL_TTY (PSL_S|PSL_IPL4) /* disable terminal interrupts */
#define IPL_CLOCK (PSL_S|PSL_IPL6) /* disable clock interrupts */
#define IPL_HIGH (PSL_S|PSL_IPL7) /* disable all interrupts */
#define IST_UNUSABLE -1 /* interrupt cannot be used */
#define IST_NONE 0 /* none (dummy) */
#define IST_PULSE 1 /* pulsed */
#define IST_EDGE 2 /* edge-triggered */
#define IST_LEVEL 3 /* level-triggered */
/*
* spl functions; all but spl0 are done in-line
*/
#include <machine/psl.h>
#define _spl(s) \
({ \
register int _spl_r; \
\
__asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
"&=d" (_spl_r) : "di" (s)); \
_spl_r; \
})
#define _splraise(s) \
({ \
int _spl_r; \
\
__asm __volatile (" \
clrl d0 ; \
movw sr,d0 ; \
movl d0,%0 ; \
andw #0x700,d0 ; \
movw %1,d1 ; \
andw #0x700,d1 ; \
cmpw d0,d1 ; \
jle 1f ; \
movw %1,sr ; \
1:" : \
"&=d" (_spl_r) : \
"di" (s) : \
"d0", "d1"); \
_spl_r; \
})
/* spl0 requires checking for software interrupts */
#define spl1() _spl(PSL_S|PSL_IPL1)
#define spl2() _spl(PSL_S|PSL_IPL2)
#define spl3() _spl(PSL_S|PSL_IPL3)
#define spl4() _spl(PSL_S|PSL_IPL4)
#define spl5() _spl(PSL_S|PSL_IPL5)
#define spl6() _spl(PSL_S|PSL_IPL6)
#define spl7() _spl(PSL_S|PSL_IPL7)
#define splnone() spl0()
#define splsoftclock() spl1()
#define splsoftnet() spl1()
#define splbio() _splraise(PSL_S|PSL_IPL3)
#define splnet() _splraise(PSL_S|PSL_IPL3)
#define spltty() _splraise(PSL_S|PSL_IPL4)
#define splimp() _splraise(PSL_S|PSL_IPL4)
#define spllpt() spltty()
#define splclock() spl6()
#define splstatclock() spl6()
#define splvm() spl6()
#define splhigh() spl7()
#define splsched() spl7()
#define splx(s) ((s) & PSL_IPL ? _spl(s) : spl0())
#ifdef _KERNEL
int spl0 __P((void));
#endif /* _KERNEL */
#endif /* _ATARI_INTR_H_ */