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intr.h revision 1.6 
      1 /*	$NetBSD: intr.h,v 1.6 2011/06/16 02:43:42 macallan 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 #ifndef _LOCORE
     30 #include <sys/cdefs.h>
     31 __KERNEL_RCSID(0, "$NetBSD: intr.h,v 1.6 2011/06/16 02:43:42 macallan Exp $");
     32 #endif
     33 
     34 #ifndef POWERPC_INTR_MACHDEP_H
     35 #define POWERPC_INTR_MACHDEP_H
     36 
     37 #define	__HAVE_FAST_SOFTINTS	1
     38 
     39 #ifndef _LOCORE
     40 void *intr_establish(int, int, int, int (*)(void *), void *);
     41 void intr_disestablish(void *);
     42 const char *intr_typename(int);
     43 void genppc_cpu_configure(void);
     44 #endif
     45 
     46 /* Interrupt priority `levels'. */
     47 #define	IPL_NONE	0	/* nothing */
     48 #define	IPL_SOFTCLOCK	1	/* timeouts */
     49 #define	IPL_SOFTBIO	2	/* block I/O */
     50 #define	IPL_SOFTNET	3	/* protocol stacks */
     51 #define	IPL_SOFTSERIAL	4	/* serial */
     52 #define	IPL_VM		5	/* memory allocation */
     53 #define	IPL_SCHED	6
     54 #define	IPL_HIGH	7	/* everything */
     55 #define	NIPL		8
     56 
     57 /* Interrupt sharing types. */
     58 #define	IST_NONE	0	/* none */
     59 #define	IST_PULSE	1	/* pulsed */
     60 #define	IST_EDGE	2	/* edge-triggered */
     61 #define	IST_LEVEL	3	/* level-triggered */
     62 
     63 #ifdef _LOCORE
     64 #define splhigh __splhigh
     65 #endif
     66 
     67 #ifndef _LOCORE
     68 /*
     69  * Interrupt handler chains.  intr_establish() inserts a handler into
     70  * the list.  The handler is called with its (single) argument.
     71  */
     72 struct intrhand {
     73 	int	(*ih_fun)(void *);
     74 	void	*ih_arg;
     75 	struct	intrhand *ih_next;
     76 	int	ih_level;
     77 	int	ih_irq;
     78 };
     79 
     80 int splraise(int);
     81 int spllower(int);
     82 void splx(int);
     83 
     84 void softint_fast_dispatch(struct lwp *, int);
     85 
     86 #define softint_init_md	powerpc_softint_init_md
     87 #define softint_trigger		powerpc_softint_trigger
     88 
     89 typedef u_int imask_t;
     90 extern imask_t imask[];
     91 
     92 #define NVIRQ		32	/* 32 virtual IRQs */
     93 #define NIRQ		128	/* up to 128 HW IRQs */
     94 
     95 #define HWIRQ_MAX       (NVIRQ - 5 - 1)
     96 #define HWIRQ_MASK      0x07ffffff
     97 
     98 #define MS_PENDING(p)	(31 - cntlzw(p))
     99 
    100 #define spl0()		spllower(0)
    101 
    102 typedef int ipl_t;
    103 typedef struct {
    104 	ipl_t _ipl;
    105 } ipl_cookie_t;
    106 
    107 static inline ipl_cookie_t
    108 makeiplcookie(ipl_t ipl)
    109 {
    110 
    111 	return (ipl_cookie_t){._ipl = ipl};
    112 }
    113 
    114 static inline int
    115 splraiseipl(ipl_cookie_t icookie)
    116 {
    117 
    118 	return splraise(icookie._ipl);
    119 }
    120 
    121 #include <sys/spl.h>
    122 
    123 #endif /* _LOCORE */
    124 
    125 #endif /* POWERPC_INTR_MACHDEP_H */
    126