Home | History | Annotate | Line # | Download | only in include 
      1 /*	$NetBSD: intr.h,v 1.26 2009/03/21 06:11:08 uwe 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  *
     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 _SH3_INTR_H_
     30 #define	_SH3_INTR_H_
     31 
     32 #include <sh3/psl.h>
     33 
     34 /* Interrupt sharing types. */
     35 #define	IST_NONE		0	/* none */
     36 #define	IST_PULSE		1	/* pulsed */
     37 #define	IST_EDGE		2	/* edge-triggered */
     38 #define	IST_LEVEL		3	/* level-triggered */
     39 
     40 /* Interrupt priority levels */
     41 #define	_IPL_N		16
     42 #define	_IPL_NSOFT	4
     43 
     44 #define	IPL_NONE	0	/* nothing */
     45 #define	IPL_SOFTCLOCK	1
     46 #define	IPL_SOFTBIO	2	/* timeouts */
     47 #define	IPL_SOFTNET	3	/* protocol stacks */
     48 #define	IPL_SOFTSERIAL	4	/* serial */
     49 
     50 struct intc_intrhand {
     51 	int	(*ih_func)(void *);
     52 	void	*ih_arg;
     53 	int	ih_level;	/* SR.I[0:3] value */
     54 	int	ih_evtcode;	/* INTEVT or INTEVT2(SH7709/SH7709A) */
     55 	int	ih_idx;		/* evtcode -> intrhand mapping */
     56 };
     57 
     58 /* from 0x200 by 0x20 -> from 0 by 1 */
     59 #define	EVTCODE_TO_MAP_INDEX(x)		(((x) >> 5) - 0x10)
     60 #define	EVTCODE_TO_IH_INDEX(x)						\
     61 	__intc_evtcode_to_ih[EVTCODE_TO_MAP_INDEX(x)]
     62 #define	EVTCODE_IH(x)	(&__intc_intrhand[EVTCODE_TO_IH_INDEX(x)])
     63 extern int8_t __intc_evtcode_to_ih[];
     64 extern struct intc_intrhand __intc_intrhand[];
     65 
     66 void intc_init(void);
     67 void *intc_intr_establish(int, int, int, int (*)(void *), void *);
     68 void intc_intr_disestablish(void *);
     69 void intc_intr_enable(int);
     70 void intc_intr_disable(int);
     71 void intc_intr(int, int, int);
     72 
     73 void intpri_intr_priority(int evtcode, int level);
     74 
     75 #endif /* !_SH3_INTR_H_ */
     76