Home | History | Annotate | Line # | Download | only in include
intr.h revision 1.7 
      1 /*	$NetBSD: intr.h,v 1.7 2007/03/09 06:45:20 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2001, 2003 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed for the NetBSD Project by
     20  *	Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 #ifndef	_IYONIX_INTR_H_
     39 #define	_IYONIX_INTR_H_
     40 
     41 #ifdef _KERNEL
     42 
     43 /* Interrupt priority "levels". */
     44 #define	IPL_NONE	0	/* nothing */
     45 #define	IPL_SOFT	1	/* generic software interrupts */
     46 #define	IPL_SOFTCLOCK	2	/* software clock interrupt */
     47 #define	IPL_SOFTNET	3	/* software network interrupt */
     48 #define	IPL_BIO		4	/* block I/O */
     49 #define	IPL_NET		5	/* network */
     50 #define	IPL_SOFTSERIAL	6	/* software serial interrupt */
     51 #define	IPL_TTY		7	/* terminals */
     52 #define	IPL_VM		8	/* memory allocation */
     53 #define	IPL_AUDIO	9	/* audio device */
     54 #define	IPL_CLOCK	10	/* clock interrupt */
     55 #define	IPL_STATCLOCK	11	/* statistics clock interrupt */
     56 #define	IPL_HIGH	12	/* everything */
     57 #define	IPL_SCHED	IPL_HIGH
     58 #define	IPL_LOCK	IPL_HIGH
     59 #define	IPL_SERIAL	13	/* serial device */
     60 
     61 #define	NIPL		14
     62 
     63 /* Interrupt sharing types. */
     64 #define	IST_NONE	0	/* none */
     65 #define	IST_PULSE	1	/* pulsed */
     66 #define	IST_EDGE	2	/* edge-triggered */
     67 #define	IST_LEVEL	3	/* level-triggered */
     68 
     69 #define IST_LEVEL_LOW	 IST_LEVEL
     70 #define IST_LEVEL_HIGH   4
     71 #define IST_EDGE_FALLING IST_EDGE
     72 #define IST_EDGE_RISING  5
     73 #define IST_EDGE_BOTH    6
     74 
     75 #define	__NEWINTR	/* enables new hooks in cpu_fork()/cpu_switch() */
     76 
     77 #ifndef _LOCORE
     78 
     79 #include <sys/device.h>
     80 #include <sys/queue.h>
     81 
     82 #if defined(_LKM)
     83 
     84 int	_splraise(int);
     85 int	_spllower(int);
     86 void	splx(int);
     87 void	_setsoftintr(int);
     88 
     89 #else	/* _LKM */
     90 
     91 #include "opt_arm_intr_impl.h"
     92 
     93 #if defined(ARM_INTR_IMPL)
     94 
     95 /*
     96  * Each board needs to define the following functions:
     97  *
     98  * int	_splraise(int);
     99  * int	_spllower(int);
    100  * void	splx(int);
    101  * void	_setsoftintr(int);
    102  *
    103  * These may be defined as functions, static inline functions, or macros,
    104  * but there must be a _spllower() and splx() defined as functions callable
    105  * from assembly language (for cpu_switch()).  However, since it's quite
    106  * useful to be able to inline splx(), you could do something like the
    107  * following:
    108  *
    109  * in <boardtype>_intr.h:
    110  * 	static inline int
    111  *	boardtype_splx(int spl)
    112  *	{...}
    113  *
    114  *	#define splx(nspl)	boardtype_splx(nspl)
    115  *	...
    116  * and in boardtype's machdep code:
    117  *
    118  *	...
    119  *	#undef splx
    120  *	int
    121  *	splx(int spl)
    122  *	{
    123  *		return boardtype_splx(spl);
    124  *	}
    125  */
    126 
    127 #include ARM_INTR_IMPL
    128 
    129 #else /* ARM_INTR_IMPL */
    130 
    131 #error ARM_INTR_IMPL not defined.
    132 
    133 #endif	/* ARM_INTR_IMPL */
    134 
    135 #endif /* _LKM */
    136 
    137 #define	splsoft()	_splraise(IPL_SOFT)
    138 
    139 typedef uint8_t ipl_t;
    140 typedef struct {
    141 	ipl_t _ipl;
    142 } ipl_cookie_t;
    143 
    144 static inline ipl_cookie_t
    145 makeiplcookie(ipl_t ipl)
    146 {
    147 
    148 	return (ipl_cookie_t){._ipl = ipl};
    149 }
    150 
    151 static inline int
    152 splraiseipl(ipl_cookie_t icookie)
    153 {
    154 
    155 	return _splraise(icookie._ipl);
    156 }
    157 
    158 #define	spl0()		_spllower(IPL_NONE)
    159 
    160 #include <sys/spl.h>
    161 
    162 /* Use generic software interrupt support. */
    163 #include <arm/softintr.h>
    164 
    165 #endif /* ! _LOCORE */
    166 
    167 #endif /* _KERNEL */
    168 
    169 #endif	/* _IYONIX_INTR_H_ */
    170