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intr.h revision 1.5 
      1 /*	$NetBSD: intr.h,v 1.5 2010/04/25 12:26:07 kiyohara 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  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 __KERNEL_RCSID(0, "$NetBSD: intr.h,v 1.5 2010/04/25 12:26:07 kiyohara Exp $");
     31 
     32 #ifndef POWERPC_INTR_MACHDEP_H
     33 #define POWERPC_INTR_MACHDEP_H
     34 
     35 void *intr_establish(int, int, int, int (*)(void *), void *);
     36 void intr_disestablish(void *);
     37 const char *intr_typename(int);
     38 void genppc_cpu_configure(void);
     39 
     40 /* Interrupt priority `levels'. */
     41 #define	IPL_NONE	0	/* nothing */
     42 #define	IPL_SOFTCLOCK	1	/* timeouts */
     43 #define	IPL_SOFTBIO	2	/* block I/O */
     44 #define	IPL_SOFTNET	3	/* protocol stacks */
     45 #define	IPL_SOFTSERIAL	4	/* serial */
     46 #define	IPL_VM		5	/* memory allocation */
     47 #define	IPL_SCHED	6
     48 #define	IPL_HIGH	7	/* everything */
     49 #define	NIPL		8
     50 
     51 /* Interrupt sharing types. */
     52 #define	IST_NONE	0	/* none */
     53 #define	IST_PULSE	1	/* pulsed */
     54 #define	IST_EDGE	2	/* edge-triggered */
     55 #define	IST_LEVEL	3	/* level-triggered */
     56 
     57 #ifndef _LOCORE
     58 /*
     59  * Interrupt handler chains.  intr_establish() inserts a handler into
     60  * the list.  The handler is called with its (single) argument.
     61  */
     62 struct intrhand {
     63 	int	(*ih_fun)(void *);
     64 	void	*ih_arg;
     65 	struct	intrhand *ih_next;
     66 	int	ih_level;
     67 	int	ih_irq;
     68 };
     69 
     70 int splraise(int);
     71 int spllower(int);
     72 void splx(int);
     73 void softintr(int);
     74 
     75 typedef u_int imask_t;
     76 extern imask_t imask[];
     77 
     78 #define NVIRQ		32	/* 32 virtual IRQs */
     79 #define NIRQ		128	/* up to 128 HW IRQs */
     80 
     81 #define HWIRQ_MAX       (NVIRQ - 5 - 1)
     82 #define HWIRQ_MASK      0x07ffffff
     83 
     84 #define MS_PENDING(p)	(31 - cntlzw(p))
     85 
     86 /* Soft interrupt masks. */
     87 #define SIR_CLOCK	27
     88 #define SIR_BIO		28
     89 #define SIR_NET		29
     90 #define SIR_SERIAL	30
     91 #define SPL_CLOCK	31
     92 
     93 #define setsoftclock()	softintr(SIR_CLOCK)
     94 #define setsoftbio()	softintr(SIR_BIO)
     95 #define setsoftnet()	softintr(SIR_NET)
     96 #define setsoftserial()	softintr(SIR_SERIAL)
     97 
     98 #define spl0()		spllower(0)
     99 
    100 typedef int ipl_t;
    101 typedef struct {
    102 	ipl_t _ipl;
    103 } ipl_cookie_t;
    104 
    105 static inline ipl_cookie_t
    106 makeiplcookie(ipl_t ipl)
    107 {
    108 
    109 	return (ipl_cookie_t){._ipl = ipl};
    110 }
    111 
    112 static inline int
    113 splraiseipl(ipl_cookie_t icookie)
    114 {
    115 
    116 	return splraise(imask[icookie._ipl]);
    117 }
    118 
    119 #include <sys/spl.h>
    120 
    121 #endif /* _LOCORE */
    122 
    123 #endif /* POWERPC_INTR_MACHDEP_H */
    124