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intr.h revision 1.1.2.2 
      1 /*	$NetBSD: intr.h,v 1.1.2.2 2007/05/08 18:24:57 garbled Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2007 Michael Lorenz
      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  * 3. Neither the name of The NetBSD Foundation nor the names of its
     16  *    contributors may be used to endorse or promote products derived
     17  *    from this software without specific prior written permission.
     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 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: intr.h,v 1.1.2.2 2007/05/08 18:24:57 garbled Exp $");
     34 
     35 #ifndef POWERPC_INTR_MACHDEP_H
     36 #define POWERPC_INTR_MACHDEP_H
     37 
     38 void *intr_establish(int, int, int, int (*)(void *), void *);
     39 void intr_disestablish(void *);
     40 const char *intr_typename(int);
     41 
     42 /* Interrupt priority `levels'. */
     43 #define	IPL_NONE	0	/* nothing */
     44 #define	IPL_SOFTCLOCK	1	/* timeouts */
     45 #define	IPL_SOFTNET	2	/* protocol stacks */
     46 #define	IPL_BIO		3	/* block I/O */
     47 #define	IPL_NET		4	/* network */
     48 #define	IPL_SOFTSERIAL	5	/* serial */
     49 #define	IPL_AUDIO	6	/* audio */
     50 #define	IPL_TTY		7	/* terminal */
     51 #define	IPL_LPT		IPL_TTY
     52 #define	IPL_VM		8	/* memory allocation */
     53 #define	IPL_CLOCK	9
     54 #define	IPL_STATCLOCK	10	/* clock */
     55 #define	IPL_SCHED	11
     56 #define	IPL_SERIAL	12	/* serial */
     57 #define	IPL_LOCK	13
     58 #define	IPL_HIGH	14	/* everything */
     59 #define	NIPL		15
     60 
     61 /* Interrupt sharing types. */
     62 #define	IST_NONE	0	/* none */
     63 #define	IST_PULSE	1	/* pulsed */
     64 #define	IST_EDGE	2	/* edge-triggered */
     65 #define	IST_LEVEL	3	/* level-triggered */
     66 
     67 #ifndef _LOCORE
     68 #include <powerpc/softintr.h>
     69 
     70 /*
     71  * Interrupt handler chains.  intr_establish() inserts a handler into
     72  * the list.  The handler is called with its (single) argument.
     73  */
     74 struct intrhand {
     75 	int	(*ih_fun)(void *);
     76 	void	*ih_arg;
     77 	struct	intrhand *ih_next;
     78 	int	ih_level;
     79 	int	ih_irq;
     80 };
     81 
     82 void softnet(int);
     83 void softserial(void);
     84 int splraise(int);
     85 int spllower(int);
     86 void splx(int);
     87 void softintr(int);
     88 
     89 extern volatile int astpending, tickspending;
     90 extern int imask[];
     91 
     92 /* Soft interrupt masks. */
     93 #define SIR_CLOCK	28
     94 #define SIR_NET		29
     95 #define SIR_SERIAL	30
     96 #define SPL_CLOCK	31
     97 
     98 #define setsoftclock()	softintr(SIR_CLOCK)
     99 #define setsoftnet()	softintr(SIR_NET)
    100 #define setsoftserial()	softintr(SIR_SERIAL)
    101 
    102 #define spl0()		spllower(0)
    103 
    104 typedef int ipl_t;
    105 typedef struct {
    106 	ipl_t _ipl;
    107 } ipl_cookie_t;
    108 
    109 static inline ipl_cookie_t
    110 makeiplcookie(ipl_t ipl)
    111 {
    112 
    113 	return (ipl_cookie_t){._ipl = ipl};
    114 }
    115 
    116 static inline int
    117 splraiseipl(ipl_cookie_t icookie)
    118 {
    119 
    120 	return splraise(imask[icookie._ipl]);
    121 }
    122 
    123 #include <sys/spl.h>
    124 
    125 #endif /* _LOCORE */
    126 
    127 #endif /* POWERPC_INTR_MACHDEP_H */
    128