Home | History | Annotate | Line # | Download | only in include
intr.h revision 1.18 
      1 /*	$NetBSD: intr.h,v 1.18 2008/06/28 05:26:33 isaki Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1997, 2007 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  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _ATARI_INTR_H_
     30 #define _ATARI_INTR_H_
     31 
     32 #define	IPL_NONE	0		    /* disable no interrupts	    */
     33 #define	IPL_SOFTCLOCK	1
     34 #define	IPL_SOFTBIO	2
     35 #define	IPL_SOFTNET	3
     36 #define	IPL_SOFTSERIAL	4
     37 #define	IPL_VM		5
     38 #define	IPL_SCHED	6
     39 #define	IPL_HIGH	7
     40 #define	NIPL		8
     41 
     42 #define	IST_UNUSABLE	-1	/* interrupt cannot be used	*/
     43 #define	IST_NONE	0	/* none (dummy)			*/
     44 #define	IST_PULSE	1	/* pulsed			*/
     45 #define	IST_EDGE	2	/* edge-triggered		*/
     46 #define	IST_LEVEL	3	/* level-triggered		*/
     47 
     48 /*
     49  * spl functions; all but spl0 are done in-line
     50  */
     51 #include <machine/psl.h>
     52 
     53 /* spl0 requires checking for software interrupts */
     54 
     55 #define splsoftclock()		splraise1()
     56 #define splsoftbio()		splraise1()
     57 #define splsoftnet()		splraise1()
     58 #define splsoftserial()		splraise1()
     59 #define splvm()			splraise4()
     60 #define splsched()		splraise6()
     61 #define splhigh()		spl7()
     62 #define splx(s)			((s) & PSL_IPL ? _spl(s) : spl0())
     63 
     64 #ifdef _KERNEL
     65 int spl0 __P((void));
     66 
     67 extern const uint16_t ipl2psl_table[NIPL];
     68 
     69 typedef int ipl_t;
     70 typedef struct {
     71 	uint16_t _psl;
     72 } ipl_cookie_t;
     73 
     74 static inline ipl_cookie_t
     75 makeiplcookie(ipl_t ipl)
     76 {
     77 
     78 	return (ipl_cookie_t){._psl = ipl2psl_table[ipl]};
     79 }
     80 
     81 static inline int
     82 splraiseipl(ipl_cookie_t icookie)
     83 {
     84 
     85 	return _splraise(icookie._psl);
     86 }
     87 
     88 #endif /* _KERNEL */
     89 
     90 #endif /* _ATARI_INTR_H_ */
     91