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intr.h revision 1.9 
      1 /*	$NetBSD: intr.h,v 1.9 2011/06/20 20:24:28 matt 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 1.9 2011/06/20 20:24:28 matt 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 
     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 #if !defined(_LOCORE)
     58 void *	intr_establish(int, int, int, int (*)(void *), void *);
     59 void	intr_disestablish(void *);
     60 const char *
     61 	intr_typename(int);
     62 
     63 int	splraise(int);
     64 int	spllower(int);
     65 void	splx(int);
     66 
     67 #if !defined(_MODULE)
     68 
     69 void	genppc_cpu_configure(void);
     70 
     71 /*
     72  * Interrupt handler chains.  intr_establish() inserts a handler into
     73  * the list.  The handler is called with its (single) argument.
     74  */
     75 struct intrhand {
     76 	int	(*ih_fun)(void *);
     77 	void	*ih_arg;
     78 	struct	intrhand *ih_next;
     79 	int	ih_ipl;
     80 	int	ih_virq;
     81 };
     82 
     83 void softint_fast_dispatch(struct lwp *, int);
     84 
     85 #define softint_init_md		powerpc_softint_init_md
     86 #define softint_trigger		powerpc_softint_trigger
     87 
     88 #ifdef __IMASK_T
     89 typedef __IMASK_T imask_t;
     90 #else
     91 typedef uint32_t imask_t;
     92 #endif
     93 
     94 extern imask_t imask[];
     95 
     96 #define NVIRQ		(sizeof(imask_t)*8)	/* 32 virtual IRQs */
     97 #ifndef NIRQ
     98 #define NIRQ		128	/* up to 128 HW IRQs */
     99 #endif
    100 
    101 #define HWIRQ_MAX       (NVIRQ - 1)
    102 #define HWIRQ_MASK     	(~(imask_t)0 >> 1)
    103 
    104 #define	PIC_VIRQ_TO_MASK(v)	__BIT(HWIRQ_MAX - (v))
    105 #define PIC_VIRQ_MS_PENDING(p)	__builtin_clz(p)
    106 
    107 #endif /* !_MODULE */
    108 
    109 #define spl0()		spllower(0)
    110 
    111 typedef int ipl_t;
    112 typedef struct {
    113 	ipl_t _ipl;
    114 } ipl_cookie_t;
    115 
    116 static inline ipl_cookie_t
    117 makeiplcookie(ipl_t ipl)
    118 {
    119 
    120 	return (ipl_cookie_t){._ipl = ipl};
    121 }
    122 
    123 static inline int
    124 splraiseipl(ipl_cookie_t icookie)
    125 {
    126 
    127 	return splraise(icookie._ipl);
    128 }
    129 
    130 #include <sys/spl.h>
    131 
    132 #endif /* _LOCORE */
    133 
    134 #endif /* POWERPC_INTR_MACHDEP_H */
    135