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at91aicvar.h revision 1.2 
      1 /*	$NetBSD: at91aicvar.h,v 1.2 2008/07/03 01:15:38 matt Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2007 Embedtronics Oy
      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 Ichiro FUKUHARA.
     18  * 4. The name of the company nor the name of the author may be used to
     19  *    endorse or promote products derived from this software without specific
     20  *    prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR
     26  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  */
     34 
     35 #ifndef _AT91AICVAR_H_
     36 #define _AT91AICVAR_H_
     37 
     38 struct intrhand {
     39 	TAILQ_ENTRY(intrhand) ih_list;	/* link on intrq list */
     40 	int (*ih_func)(void *);		/* interrupt handler */
     41 	void *ih_arg;			/* arg for handler */
     42 	int ih_ipl;			/* IPL_* */
     43 	int ih_irq;			/* IRQ number */
     44 };
     45 
     46 #define	IRQNAMESIZE	sizeof("aic irq xxx")
     47 
     48 struct intrq {
     49 	TAILQ_HEAD(, intrhand) iq_list;	/* handler list */
     50 	struct evcnt iq_ev;		/* event counter */
     51 	u_int32_t iq_levels;		/* IPL_*'s this IRQ has */
     52 	char iq_name[IRQNAMESIZE];	/* interrupt name */
     53 	int iq_type;			/* interrupt request type: */
     54 #define	_INTR_LOW_LEVEL		1		/* interrupt when signal at low level */
     55 #define	INTR_HIGH_LEVEL		2		/* interrupt when signal at high level */
     56 #define	INTR_FALLING_EDGE	4		/* interrupt on falling edge */
     57 #define	INTR_RISING_EDGE	8		/* interrupt on rising edge */
     58 #define	INTR_MASK		0xF
     59 	volatile int iq_busy;		/* set if irq is busy */
     60 };
     61 
     62 void at91aic_init(void);
     63 void *at91aic_intr_establish(int irq, int ipl, int type, int (*ih_func)(void *), void *arg);
     64 void at91aic_intr_disestablish(void *cookie);
     65 void at91aic_intr_poll(void *ihp, int flags);
     66 void at91aic_intr_dispatch(struct irqframe *frame);
     67 
     68 #endif /* _AT91AICVAR_H_ */
     69