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intr.h revision 1.21.6.1 
      1 /*	$NetBSD: intr.h,v 1.21.6.1 2008/01/08 22:09:48 bouyer Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1998 Jonathan Stone.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by Jonathan Stone for
     17  *      the NetBSD Project.
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #ifndef _HPCMIPS_INTR_H_
     34 #define _HPCMIPS_INTR_H_
     35 
     36 #define	IPL_NONE	0	/* disable only this interrupt */
     37 #define	IPL_SOFTCLOCK	1	/* clock software interrupts (SI 0) */
     38 #define	IPL_SOFTBIO	1	/* bio software interrupts (SI 0) */
     39 #define	IPL_SOFTNET	2	/* network software interrupts (SI 1) */
     40 #define	IPL_SOFTSERIAL	2	/* serial software interrupts (SI 1) */
     41 #define	IPL_VM		3
     42 #define	IPL_SCHED	4
     43 #define	IPL_HIGH	4	/* disable all interrupts */
     44 
     45 #define	_IPL_N		5
     46 
     47 #define	_IPL_SI0_FIRST	IPL_SOFTCLOCK
     48 #define	_IPL_SI0_LAST	IPL_SOFTBIO
     49 
     50 #define	_IPL_SI1_FIRST	IPL_SOFTNET
     51 #define	_IPL_SI1_LAST	IPL_SOFTSERIAL
     52 
     53 /* Interrupt sharing types. */
     54 #define	IST_UNUSABLE	-1	/* interrupt cannot be used */
     55 #define	IST_NONE	0	/* none */
     56 #define	IST_PULSE	1	/* pulsed */
     57 #define	IST_EDGE	2	/* edge-triggered */
     58 #define	IST_LEVEL	3	/* level-triggered */
     59 
     60 #ifdef _KERNEL
     61 #ifndef _LOCORE
     62 #include <mips/cpuregs.h>
     63 #include <mips/locore.h>
     64 
     65 extern const u_int32_t *ipl_sr_bits;
     66 
     67 void	intr_init(void);
     68 
     69 #define	spl0()		(void) _spllower(0)
     70 #define	splx(s)		(void) _splset(s)
     71 
     72 typedef int ipl_t;
     73 typedef struct {
     74 	ipl_t _sr;
     75 } ipl_cookie_t;
     76 
     77 static inline ipl_cookie_t
     78 makeiplcookie(ipl_t ipl)
     79 {
     80 
     81 	return (ipl_cookie_t){._sr = ipl_sr_bits[ipl]};
     82 }
     83 
     84 static inline int
     85 splraiseipl(ipl_cookie_t icookie)
     86 {
     87 
     88 	return _splraise(icookie._sr);
     89 }
     90 
     91 #include <sys/spl.h>
     92 
     93 #endif /* !_LOCORE */
     94 #endif /* _KERNEL */
     95 
     96 #endif /* !_HPCMIPS_INTR_H_ */
     97