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footbridge_irqhandler.h revision 1.1 
      1 /*	$NetBSD: footbridge_irqhandler.h,v 1.1 2002/10/22 20:15:25 chris Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994-1996 Mark Brinicombe.
      5  * Copyright (c) 1994 Brini.
      6  * All rights reserved.
      7  *
      8  * This code is derived from software written for Brini by Mark Brinicombe
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by Mark Brinicombe
     21  *	for the NetBSD Project.
     22  * 4. The name of the company nor the name of the author may be used to
     23  *    endorse or promote products derived from this software without specific
     24  *    prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     27  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     28  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     29  * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     30  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     31  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     32  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36  * SUCH DAMAGE.
     37  *
     38  * IRQ related stuff (defines + structures)
     39  *
     40  * Created      : 30/09/94
     41  */
     42 
     43 #ifndef _FOOTBRIDGE_IRQHANDLER_H_
     44 #define _FOOTBRIDGE_IRQHANDLER_H_
     45 
     46 #ifndef _LOCORE
     47 #include <sys/types.h>
     48 #endif /* _LOCORE */
     49 
     50 #define IRQ_INSTRUCT	-1
     51 #define NIRQS		0x20
     52 
     53 #include <machine/intr.h>
     54 
     55 #ifndef _LOCORE
     56 typedef struct irqhandler {
     57 	int (*ih_func) __P((void *arg));/* handler function */
     58 	void *ih_arg;			/* Argument to handler */
     59 	int ih_level;			/* Interrupt level */
     60 	int ih_num;			/* Interrupt number (for accounting) */
     61 	const char *ih_name;		/* Name of interrupt (for vmstat -i) */
     62 	u_int ih_flags;			/* Interrupt flags */
     63 	u_int ih_maskaddr;		/* mask address for expansion cards */
     64 	u_int ih_maskbits;		/* interrupt bit for expansion cards */
     65 	struct irqhandler *ih_next;	/* next handler */
     66 } irqhandler_t;
     67 
     68 #ifdef _KERNEL
     69 extern u_int irqmasks[IPL_LEVELS];
     70 extern irqhandler_t *irqhandlers[NIRQS];
     71 
     72 void irq_init __P((void));
     73 int irq_claim __P((int, irqhandler_t *));
     74 int irq_release __P((int, irqhandler_t *));
     75 void *intr_claim __P((int irq, int level, const char *name, int (*func) __P((void *)), void *arg));
     76 int intr_release __P((void *ih));
     77 void irq_setmasks __P((void));
     78 void disable_irq __P((int));
     79 void enable_irq __P((int));
     80 #endif	/* _KERNEL */
     81 #endif	/* _LOCORE */
     82 
     83 #define IRQ_FLAG_ACTIVE 0x00000001	/* This is the active handler in list */
     84 
     85 #endif	/* _FOOTBRIDGE_IRQHANDLER_H_ */
     86 
     87 /* End of irqhandler.h */
     88