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intr.h revision 1.3 
      1 /*	$NetBSD: intr.h,v 1.3 2007/12/03 15:34:12 ad 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 1.3 2007/12/03 15:34:12 ad 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 void genppc_cpu_configure(void);
     42 
     43 /* Interrupt priority `levels'. */
     44 #define	IPL_NONE	0	/* nothing */
     45 #define	IPL_SOFTCLOCK	1	/* timeouts */
     46 #define	IPL_SOFTBIO	2	/* block I/O */
     47 #define	IPL_SOFTNET	3	/* protocol stacks */
     48 #define	IPL_SOFTSERIAL	4	/* serial */
     49 #define	IPL_VM		5	/* memory allocation */
     50 #define	IPL_SCHED	6
     51 #define	IPL_HIGH	7	/* everything */
     52 #define	NIPL		8
     53 
     54 /* Interrupt sharing types. */
     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 #ifndef _LOCORE
     61 /*
     62  * Interrupt handler chains.  intr_establish() inserts a handler into
     63  * the list.  The handler is called with its (single) argument.
     64  */
     65 struct intrhand {
     66 	int	(*ih_fun)(void *);
     67 	void	*ih_arg;
     68 	struct	intrhand *ih_next;
     69 	int	ih_level;
     70 	int	ih_irq;
     71 };
     72 
     73 int splraise(int);
     74 int spllower(int);
     75 void splx(int);
     76 void softintr(int);
     77 
     78 extern int imask[];
     79 
     80 /* Soft interrupt masks. */
     81 #define SIR_CLOCK	27
     82 #define SIR_BIO		28
     83 #define SIR_NET		29
     84 #define SIR_SERIAL	30
     85 #define SPL_CLOCK	31
     86 
     87 #define setsoftclock()	softintr(SIR_CLOCK)
     88 #define setsoftbio()	softintr(SIR_BIO)
     89 #define setsoftnet()	softintr(SIR_NET)
     90 #define setsoftserial()	softintr(SIR_SERIAL)
     91 
     92 #define spl0()		spllower(0)
     93 
     94 typedef int ipl_t;
     95 typedef struct {
     96 	ipl_t _ipl;
     97 } ipl_cookie_t;
     98 
     99 static inline ipl_cookie_t
    100 makeiplcookie(ipl_t ipl)
    101 {
    102 
    103 	return (ipl_cookie_t){._ipl = ipl};
    104 }
    105 
    106 static inline int
    107 splraiseipl(ipl_cookie_t icookie)
    108 {
    109 
    110 	return splraise(imask[icookie._ipl]);
    111 }
    112 
    113 #include <sys/spl.h>
    114 
    115 #endif /* _LOCORE */
    116 
    117 #endif /* POWERPC_INTR_MACHDEP_H */
    118