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intr.h revision 1.2 
      1 /*	$NetBSD: intr.h,v 1.2 1997/03/15 18:09:46 is 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 _debug_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 	if ((_spl_r&PSL_IPL) > (s&PSL_IPL)) \
     64 		printf ("%s:%d:spl(%d) ==> spl(%d)!!\n",__FILE__,__LINE__, \
     65 		    ((PSL_IPL&_spl_r)>>8), ((PSL_IPL&s)>>8)); \
     66         _spl_r; \
     67 })
     68 
     69 #define _spl_no_check(s) \
     70 ({ \
     71         register int _spl_r; \
     72 \
     73         __asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
     74                 "&=d" (_spl_r) : "di" (s)); \
     75         _spl_r; \
     76 })
     77 
     78 #if defined (DEBUG)
     79 #define _spl _debug_spl
     80 #else
     81 #define _spl _spl_no_check
     82 #endif
     83 
     84 /* spl0 requires checking for software interrupts */
     85 #define spl1()	_spl(PSL_S|PSL_IPL1)
     86 #define spl2()	_spl(PSL_S|PSL_IPL2)
     87 #define spl3()	_spl(PSL_S|PSL_IPL3)
     88 #define spl4()	_spl(PSL_S|PSL_IPL4)
     89 #define spl5()	_spl(PSL_S|PSL_IPL5)
     90 #define spl6()	_spl(PSL_S|PSL_IPL6)
     91 #define spl7()	_spl(PSL_S|PSL_IPL7)
     92 
     93 #define splnone()	spl0()
     94 #define splsoftclock()	spl1()
     95 #define splsoftnet()	spl1()
     96 #define splbio()	spl3()
     97 #define splnet()	spl3()
     98 /*
     99  * lowered to spl4 to allow for serial input into
    100  * private ringbuffer inspite of spltty
    101  */
    102 #define spltty()	spl4()
    103 #define splimp()	spl4()
    104 #define splclock()	spl6()
    105 #define splstatclock()	spl6()
    106 #define splvm()		spl6()
    107 #define splhigh()	spl7()
    108 #define splsched()	spl7()
    109 
    110 #define splx(s)         (s & PSL_IPL ? _spl_no_check(s) : spl0())
    111 
    112 #ifdef _KERNEL
    113 int spl0 __P((void));
    114 #endif /* _KERNEL */
    115 
    116 #endif /* _ATARI_INTR_H_ */
    117 
    118