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intr.h revision 1.21 
      1 /*	$NetBSD: intr.h,v 1.21 2008/06/26 02:52:03 isaki Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 1997 Scott Reynolds
      5  * Copyright (C) 1998 Darrin Jewell
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. The name of the author may not be used to endorse or promote products
     17  *    derived from this software without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef _NEXT68K_INTR_H_
     32 #define _NEXT68K_INTR_H_
     33 
     34 #include <machine/psl.h>
     35 
     36 /* Probably want to dealwith IPL's here @@@ */
     37 
     38 #ifdef _KERNEL
     39 
     40 /* spl0 requires checking for software interrupts */
     41 
     42 /* watch out for side effects */
     43 #define splx(s)         ((s) & PSL_IPL ? _spl(s) : spl0())
     44 
     45 #define splsoftbio()	splraise1()
     46 #define splsoftnet()    splraise1()
     47 #define splsoftclock()	splraise1()
     48 #define splsoftserial()	splraise1()
     49 #define splvm()         splraise6()
     50 #define splhigh()       spl7()
     51 #define splsched()      spl7()
     52 
     53 #define spldma()        splraise6()
     54 
     55 /****************************************************************/
     56 
     57 #define	IPL_NONE	0
     58 #define	IPL_SOFTCLOCK	1
     59 #define	IPL_SOFTBIO	2
     60 #define	IPL_SOFTNET	3
     61 #define	IPL_SOFTSERIAL	4
     62 #define	IPL_VM		5
     63 #define	IPL_SCHED	6
     64 #define	IPL_HIGH	7
     65 #define	NIPL		8
     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 /****************************************************************/
     89 
     90 /* locore.s */
     91 int	spl0(void);
     92 
     93 extern volatile u_long *intrstat;
     94 extern volatile u_long *intrmask;
     95 #define INTR_SETMASK(x)		(*intrmask = (x))
     96 #define INTR_ENABLE(x)		(*intrmask |= NEXT_I_BIT(x))
     97 #define INTR_DISABLE(x)		(*intrmask &= (~NEXT_I_BIT(x)))
     98 #define INTR_OCCURRED(x)	(*intrstat & NEXT_I_BIT(x))
     99 
    100 #endif /* _KERNEL */
    101 
    102 #endif /* _NEXT68K_INTR_H_ */
    103