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intr.h revision 1.23.6.1 
      1 /*	$NetBSD: intr.h,v 1.23.6.1 2008/01/08 22:10:22 bouyer Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
      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  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *        This product includes software developed by the NetBSD
     18  *        Foundation, Inc. and its contributors.
     19  * 4. Neither the name of The NetBSD Foundation nor the names of its
     20  *    contributors may be used to endorse or promote products derived
     21  *    from this software without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     33  * POSSIBILITY OF SUCH DAMAGE.
     34  */
     35 
     36 #ifndef _SH3_INTR_H_
     37 #define	_SH3_INTR_H_
     38 
     39 #include <sh3/psl.h>
     40 
     41 /* Interrupt sharing types. */
     42 #define	IST_NONE		0	/* none */
     43 #define	IST_PULSE		1	/* pulsed */
     44 #define	IST_EDGE		2	/* edge-triggered */
     45 #define	IST_LEVEL		3	/* level-triggered */
     46 
     47 /* Interrupt priority levels */
     48 #define	_IPL_N		8
     49 #define	_IPL_NSOFT	4
     50 
     51 #define	IPL_NONE	0	/* nothing */
     52 #define	IPL_SOFTCLOCK	1
     53 #define	IPL_SOFTBIO	2	/* timeouts */
     54 #define	IPL_SOFTNET	3	/* protocol stacks */
     55 #define	IPL_SOFTSERIAL	4	/* serial */
     56 
     57 struct intc_intrhand {
     58 	int	(*ih_func)(void *);
     59 	void	*ih_arg;
     60 	int	ih_level;	/* SR.I[0:3] value */
     61 	int	ih_evtcode;	/* INTEVT or INTEVT2(SH7709/SH7709A) */
     62 	int	ih_idx;		/* evtcode -> intrhand mapping */
     63 };
     64 
     65 /* from 0x200 by 0x20 -> from 0 by 1 */
     66 #define	EVTCODE_TO_MAP_INDEX(x)		(((x) >> 5) - 0x10)
     67 #define	EVTCODE_TO_IH_INDEX(x)						\
     68 	__intc_evtcode_to_ih[EVTCODE_TO_MAP_INDEX(x)]
     69 #define	EVTCODE_IH(x)	(&__intc_intrhand[EVTCODE_TO_IH_INDEX(x)])
     70 extern int8_t __intc_evtcode_to_ih[];
     71 extern struct intc_intrhand __intc_intrhand[];
     72 
     73 void intc_init(void);
     74 void *intc_intr_establish(int, int, int, int (*)(void *), void *);
     75 void intc_intr_disestablish(void *);
     76 void intc_intr_enable(int);
     77 void intc_intr_disable(int);
     78 void intc_intr(int, int, int);
     79 
     80 void intpri_intr_priority(int evtcode, int level);
     81 
     82 #endif /* !_SH3_INTR_H_ */
     83