sys/arch/arm/at91/at91aicvar.h

   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  *
  16  * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD BE LIABLE FOR
  20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #ifndef _AT91AICVAR_H_
  30 #define _AT91AICVAR_H_
  31
  32 struct intrhand {
  33         TAILQ_ENTRY(intrhand) ih_list;  /* link on intrq list */
  34         int (*ih_func)(void *);         /* interrupt handler */
  35         void *ih_arg;                   /* arg for handler */
  36         int ih_ipl;                     /* IPL_* */
  37         int ih_irq;                     /* IRQ number */
  38 };
  39
  40 #define IRQNAMESIZE     sizeof("aic irq xxx")
  41
  42 struct intrq {
  43         TAILQ_HEAD(, intrhand) iq_list; /* handler list */
  44         struct evcnt iq_ev;             /* event counter */
  45         u_int32_t iq_levels;            /* IPL_*'s this IRQ has */
  46         char iq_name[IRQNAMESIZE];      /* interrupt name */
  47         int iq_type;                    /* interrupt request type: */
  48 #define _INTR_LOW_LEVEL         1               /* interrupt when signal at low level */
  49 #define INTR_HIGH_LEVEL         2               /* interrupt when signal at high level */
  50 #define INTR_FALLING_EDGE       4               /* interrupt on falling edge */
  51 #define INTR_RISING_EDGE        8               /* interrupt on rising edge */
  52 #define INTR_MASK               0xF
  53         volatile int iq_busy;           /* set if irq is busy */
  54 };
  55
  56 void at91aic_init(void);
  57 void *at91aic_intr_establish(int irq, int ipl, int type, int (*ih_func)(void *), void *arg);
  58 void at91aic_intr_disestablish(void *cookie);
  59 void at91aic_intr_poll(void *ihp, int flags);
  60 void at91aic_intr_dispatch(struct irqframe *frame);
  61
  62 #endif /* _AT91AICVAR_H_ */