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intr.h revision 1.19 
      1 /*	$NetBSD: intr.h,v 1.19 2008/06/26 02:52:29 isaki Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe and Steve C. Woodford.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _MVME68K_INTR_H
     33 #define _MVME68K_INTR_H
     34 
     35 #include <sys/device.h>
     36 #include <machine/psl.h>
     37 
     38 #define	IPL_NONE	0	/* disable only this interrupt */
     39 #define	IPL_SOFTCLOCK	1	/* clock software interrupts */
     40 #define	IPL_SOFTBIO	2	/* block software interrupts */
     41 #define	IPL_SOFTNET	3	/* network software interrupts */
     42 #define	IPL_SOFTSERIAL	4	/* serial software interrupts */
     43 #define	IPL_VM		5
     44 #define	IPL_SCHED	6
     45 #define	IPL_HIGH	7
     46 #define	NIPL		8
     47 
     48 #ifdef _KERNEL
     49 #define spl0()			_spl0()
     50 #define splsoftclock()		splraise1()
     51 #define splsoftbio()		splraise1()
     52 #define splsoftnet()		splraise1()
     53 #define splsoftserial()		splraise1()
     54 #define splvm()			splraise3()
     55 #define splsched()		spl7()
     56 #define splhigh()		spl7()
     57 
     58 #ifndef _LOCORE
     59 
     60 extern const uint16_t ipl2psl_table[NIPL];
     61 
     62 typedef int ipl_t;
     63 typedef struct {
     64 	uint16_t _psl;
     65 } ipl_cookie_t;
     66 
     67 static inline ipl_cookie_t
     68 makeiplcookie(ipl_t ipl)
     69 {
     70 
     71 	return (ipl_cookie_t){._psl = ipl2psl_table[ipl]};
     72 }
     73 
     74 static inline int
     75 splraiseipl(ipl_cookie_t icookie)
     76 {
     77 
     78 	return _splraise(icookie._psl);
     79 }
     80 
     81 static __inline void
     82 splx(int sr)
     83 {
     84 
     85 	__asm volatile("movw %0,%%sr" : : "di" (sr));
     86 }
     87 
     88 #endif /* !_LOCORE */
     89 #endif /* _KERNEL */
     90 
     91 #endif /* _MVME68K_INTR_H */
     92