root/sys/arch/acorn32/include/irqhandler.h
/*      $NetBSD: irqhandler.h,v 1.9 2009/03/14 14:45:51 dsl Exp $       */

/*
 * Copyright (c) 1994-1996 Mark Brinicombe.
 * Copyright (c) 1994 Brini.
 * All rights reserved.
 *
 * This code is derived from software written for Brini by Mark Brinicombe
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Mark Brinicombe
 *      for the NetBSD Project.
 * 4. The name of the company nor the name of the author may be used to
 *    endorse or promote products derived from this software without specific
 *    prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * IRQ related stuff (defines + structures)
 *
 * Created      : 30/09/94
 */

#ifndef _ARM32_IRQHANDLER_H_
#define _ARM32_IRQHANDLER_H_

#if defined(_KERNEL_OPT)
#include "iomd.h"
#endif

#ifndef _LOCORE
#include <sys/types.h>
#endif /* _LOCORE */

/* Define the IRQ bits */

/*
 * XXX this is really getting rather horrible.
 * Shortly to be replaced with system specific interrupt tables and handling
 */

#if NIOMD > 0

/* Only for ARM7500 : */

/*#define IRQ_PRINTER   0x00*/
#define IRQ_INT2        0x00
/*#define IRQ_RESERVED0 0x01*/
#define IRQ_BUTTON      0x02
#define IRQ_NINT1       0x02
#define IRQ_FLYBACK     0x03
#define IRQ_NPOR        0x04
#define IRQ_TIMER0      0x05
#define IRQ_TIMER1      0x06
#define IRQ_SOFTINT     0x07

#define IRQ_DREQ3       0x08
#define IRQ_NINT8       0x08
/*#define IRQ_HD1       0x09*/
#define IRQ_INT7        0x09
/*#define IRQ_HD        IRQ_HD1*/
#define IRQ_DREQ2       0x0A
#define IRQ_NINT6       0x0A
#define IRQ_INT5        0x0B
/*#define IRQ_FLOPPY    0x0C*/
#define IRQ_NINT4       0x0C
/*#define IRQ_SERIAL    0x0D*/
#define IRQ_NINT3       0x0D
#define IRQ_KBDTX       0x0E
#define IRQ_KBDRX       0x0F

#define IRQ_IRQ3        0x10
#define IRQ_IRQ4        0x11
#define IRQ_IRQ5        0x12
#define IRQ_IRQ6        0x13
#define IRQ_IRQ7        0x14
#define IRQ_IRQ9        0x15
#define IRQ_IRQ10       0x16
#define IRQ_IRQ11       0x17

#define IRQ_IOP0        0x10
#define IRQ_IOP1        0x11
#define IRQ_IOP2        0x12
#define IRQ_IOP3        0x13
#define IRQ_IOP4        0x14
#define IRQ_IOP5        0x15
#define IRQ_IOP6        0x16
#define IRQ_IOP7        0x17

#define IRQ_MSDRX       0x18
#define IRQ_MSDTX       0x19
#define IRQ_ATOD        0x1A
#define IRQ_NEVENT1     0x1B
#define IRQ_CLOCK       0x1B
#define IRQ_NEVENT2     0x1C
#define IRQ_PANIC       0x1C
/*#define IRQ_RESERVED2 0x1D*/
/*#define IRQ_RESERVED3 0x1E*/


/*
 * Note that Sound DMA IRQ is on the 31st vector.
 * It's not part of the IRQD.
 */
#define IRQ_SDMA        0x1F

/* Several interrupts are different between the A7000 and RC7500 */
#ifdef RC7500

#define IRQ_FIQDOWN     0x07
#define IRQ_ETHERNET    0x0B
#define IRQ_HD2         IRQ_IRQ11

#else   /* RC7500 */

/*#define IRQ_RESERVED1 0x07 */
#define IRQ_EXTENDED    0x0B
#define IRQ_PODULE      0x0D

#endif  /* RC7500 */




/* for non ARM7500 machines : */

/*#define IRQ_PRINTER   0x00*/
/*#define IRQ_RESERVED0 0x01*/
/*#define IRQ_FLOPPYIDX 0x02*/
#define IRQ_FLYBACK     0x03
#define IRQ_POR         0x04
#define IRQ_TIMER0      0x05
#define IRQ_TIMER1      0x06
/*#define IRQ_RESERVED1 0x07*/

/*#define IRQ_RESERVED2 0x08*/
/*#define IRQ_HD        0x09*/
/*#define IRQ_SERIAL    0x0A*/
#define IRQ_EXTENDED    0x0B
/*#define IRQ_FLOPPY    0x0C*/
#define IRQ_PODULE      0x0D
#define IRQ_KBDTX       0x0E
#define IRQ_KBDRX       0x0F

#define IRQ_DMACH0      0x10
#define IRQ_DMACH1      0x11
#define IRQ_DMACH2      0x12
#define IRQ_DMACH3      0x13
#define IRQ_DMASCH0     0x14
#define IRQ_DMASCH1     0x15
/*#define IRQ_RESERVED3 0x16*/
/*#define IRQ_RESERVED4 0x17*/



#endif  /* NIOMD > 0 */

#define IRQ_VSYNC       IRQ_FLYBACK     /* Aliased */
#define IRQ_NETSLOT     IRQ_EXTENDED

#define IRQ_INSTRUCT    -1
#define NIRQS           0x20

#include <machine/intr.h>

#ifndef _LOCORE
typedef struct irqhandler {
        int (*ih_func)(void *arg);/* handler function */
        void *ih_arg;                   /* Argument to handler */
        int ih_level;                   /* Interrupt level */
        int ih_num;                     /* Interrupt number (for accounting) */
        const char *ih_name;            /* Name of interrupt (for vmstat -i) */
        u_int ih_flags;                 /* Interrupt flags */
        u_int ih_maskaddr;              /* mask address for expansion cards */
        u_int ih_maskbits;              /* interrupt bit for expansion cards */
        struct irqhandler *ih_next;     /* next handler */
} irqhandler_t;

#ifdef _KERNEL
extern u_int irqmasks[NIPL];
extern irqhandler_t *irqhandlers[NIRQS];

void irq_init(void);
int irq_claim(int, irqhandler_t *);
int irq_release(int, irqhandler_t *);
void *intr_claim(int irq, int level, const char *name, int (*func)(void *), void *arg);
int intr_release(void *ih);
void irq_setmasks(void);
void disable_irq(int);
void enable_irq(int);
void stray_irqhandler(u_int);
#endif  /* _KERNEL */
#endif  /* _LOCORE */

#define IRQ_FLAG_ACTIVE 0x00000001      /* This is the active handler in list */

#endif  /* _ARM32_IRQHANDLER_H_ */

/* End of irqhandler.h */