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intr.h revision 1.12.14.1 
      1 /*	$NetBSD: intr.h,v 1.12.14.1 2007/05/04 10:34:13 nisimura Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Charles M. Hannum.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #ifndef _MACHINE_INTR_H_
     40 #define _MACHINE_INTR_H_
     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 #include <machine/cpu.h>
     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_level;
     80 	int	ih_irq;
     81 };
     82 
     83 #include <sys/device.h>
     84 
     85 int splraise(int);
     86 int spllower(int);
     87 void softintr(int);
     88 void splx(int);
     89 
     90 void do_pending_int(void);
     91 
     92 void init_intr_ivr(void);
     93 void init_intr_openpic(void);
     94 
     95 void enable_intr(void);
     96 void disable_intr(void);
     97 
     98 void *intr_establish(int, int, int, int (*)(void *), void *);
     99 void intr_disestablish(void *);
    100 
    101 const char *intr_typename(int);
    102 
    103 void softnet(int);
    104 void softserial(void);
    105 int isa_intr(void);
    106 void isa_intr_mask(int);
    107 void isa_intr_clr(int);
    108 void isa_setirqstat(int, int, int);
    109 
    110 extern int imen;
    111 extern int imask[];
    112 extern struct intrhand *intrhand[];
    113 
    114 #define	ICU_LEN			64
    115 
    116 #if 1 /* PIC_I8259 */
    117 #define	IRQ_SLAVE		2
    118 #define	LEGAL_IRQ(x)		((x) >= 0 && (x) < ICU_LEN && (x) != IRQ_SLAVE)
    119 #define	I8259_INTR_NUM		16
    120 #define	OPENPIC_INTR_NUM	((ICU_LEN)-(I8259_INTR_NUM))
    121 #else
    122 #define	LEGAL_IRQ(x)		((x) >= 0 && (x) < ICU_LEN)
    123 #define	OPENPIC_INTR_NUM	(0)
    124 #endif
    125 
    126 /* Soft interrupt masks. */
    127 #define SIR_CLOCK       28
    128 #define SIR_NET         29
    129 #define SIR_SERIAL      30
    130 #define SPL_CLOCK       31
    131 
    132 #define setsoftclock()  softintr(SIR_CLOCK);
    133 #define setsoftnet()    softintr(SIR_NET);
    134 #define setsoftserial() softintr(SIR_SERIAL);
    135 
    136 /*#define	splx(x)		spllower(x)*/
    137 #define	spl0()		spllower(0)
    138 
    139 typedef int ipl_t;
    140 typedef struct {
    141 	ipl_t _ipl;
    142 } ipl_cookie_t;
    143 
    144 static inline ipl_cookie_t
    145 makeiplcookie(ipl_t ipl)
    146 {
    147 
    148 	return (ipl_cookie_t){._ipl = ipl};
    149 }
    150 
    151 static inline int
    152 splraiseipl(ipl_cookie_t icookie)
    153 {
    154 
    155 	return splraise(imask[icookie._ipl]);
    156 }
    157 
    158 #include <sys/spl.h>
    159 
    160 #endif /* !_LOCORE */
    161 
    162 #endif /* !_MACHINE_INTR_H_ */
    163