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intr.h revision 1.21.76.1 
      1 /*	$NetBSD: intr.h,v 1.21.76.1 2021/04/03 22:28:20 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1996, 1997, 2007 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Leo Weppelman.
      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  *
     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 #ifndef _ATARI_INTR_H_
     33 #define _ATARI_INTR_H_
     34 
     35 #define	IPL_NONE	0		    /* disable no interrupts	    */
     36 #define	IPL_SOFTCLOCK	1
     37 #define	IPL_SOFTBIO	2
     38 #define	IPL_SOFTNET	3
     39 #define	IPL_SOFTSERIAL	4
     40 #define	IPL_VM		5
     41 #define	IPL_SCHED	6
     42 #define	IPL_HIGH	7
     43 #define	NIPL		8
     44 
     45 #define	IST_UNUSABLE	-1	/* interrupt cannot be used	*/
     46 #define	IST_NONE	0	/* none (dummy)			*/
     47 #define	IST_PULSE	1	/* pulsed			*/
     48 #define	IST_EDGE	2	/* edge-triggered		*/
     49 #define	IST_LEVEL	3	/* level-triggered		*/
     50 
     51 /*
     52  * spl functions; all but spl0 are done in-line
     53  */
     54 #include <machine/psl.h>
     55 
     56 /* spl0 requires checking for software interrupts */
     57 
     58 #define splsoftclock()		splraise1()
     59 #define splsoftbio()		splraise1()
     60 #define splsoftnet()		splraise1()
     61 #define splsoftserial()		splraise1()
     62 #define splvm()			splraise4()
     63 #define splsched()		splraise6()
     64 #define splhigh()		spl7()
     65 #define splx(s)			((s) & PSL_IPL ? _spl(s) : spl0())
     66 
     67 #ifdef _KERNEL
     68 int spl0(void);
     69 
     70 extern const uint16_t ipl2psl_table[NIPL];
     71 extern int idepth;
     72 
     73 typedef int ipl_t;
     74 typedef struct {
     75 	uint16_t _psl;
     76 } ipl_cookie_t;
     77 
     78 static inline ipl_cookie_t
     79 makeiplcookie(ipl_t ipl)
     80 {
     81 
     82 	return (ipl_cookie_t){._psl = ipl2psl_table[ipl]};
     83 }
     84 
     85 static inline int
     86 splraiseipl(ipl_cookie_t icookie)
     87 {
     88 
     89 	return _splraise(icookie._psl);
     90 }
     91 
     92 #include <sys/queue.h>
     93 #include <machine/cpu.h>	/* XXX: for clockframe */
     94 
     95 struct clockframe;
     96 
     97 #define	AUTO_VEC	0x0001	/* We're dealing with an auto-vector	*/
     98 #define	USER_VEC	0x0002	/* We're dealing with an user-vector	*/
     99 
    100 #define	FAST_VEC	0x0010	/* Fast, stash right into vector-table	*/
    101 #define	ARG_CLOCKFRAME	0x0020	/* Supply clockframe as an argument	*/
    102 
    103 /*
    104  * Interrupt handler chains.  intr_establish() inserts a handler into
    105  * the list.  The handler is called with its (single) argument or with a
    106  * 'standard' clockframe. This depends on 'ih_type'.
    107  */
    108 typedef int	(*hw_ifun_t)(void *, int);
    109 
    110 struct intrhand {
    111 	LIST_ENTRY(intrhand)	ih_link;
    112 	hw_ifun_t		ih_fun;
    113 	void			*ih_arg;
    114 	int			ih_type;
    115 	int			ih_pri;
    116 	int			ih_vector;
    117 	u_int			*ih_intrcnt;
    118 };
    119 
    120 void		intr_init(void);
    121 struct intrhand *intr_establish(int, int, int, hw_ifun_t, void *);
    122 int		intr_disestablish(struct intrhand *);
    123 void		intr_dispatch(struct clockframe);
    124 void		intr_glue(void);
    125 
    126 /*
    127  * Exported by intrcnt.h
    128  */
    129 extern u_long	autovects[];
    130 extern u_int	intrcnt_auto[];
    131 extern u_long	uservects[];
    132 extern u_int	intrcnt_user[];
    133 
    134 #endif /* _KERNEL */
    135 
    136 #endif /* _ATARI_INTR_H_ */
    137