1 /* $NetBSD: at91aicvar.h,v 1.5 2012/11/12 18:00:36 skrll 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 uint32_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 trapframe *frame); 61 62 #endif /* _AT91AICVAR_H_ */ 63