sys/arch/acorn26/include/irq.h

   1 /* $NetBSD: irq.h,v 1.1 2002/03/24 15:47:03 bjh21 Exp $ */
   2 /*-
   3  * Copyright (c) 2000 Ben Harris
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #ifndef _ARM26_IRQ_H
  30 #define _ARM26_IRQ_H
  31 #include <arch/acorn26/iobus/iocreg.h>
  32
  33 /* return values from interrupt handlers */
  34 /* These are the same as arm32 uses */
  35 #define IRQ_HANDLED             1
  36 #define IRQ_NOT_HANDLED         0
  37 #define IRQ_MAYBE_HANDLED       -1
  38
  39 /*
  40  * These definitions specify how the devices are wired to the IOC
  41  * interrupt lines.
  42  */
  43 /* All systems */
  44 #define IRQ_PFIQ        IOC_IRQ_IL0     /* Podule FIQ request */
  45 #define IRQ_SIRQ        IOC_IRQ_IL1     /* Sound buffer pointer used */
  46 #define IRQ_PIRQ        IOC_IRQ_IL5     /* Podule IRQ request */
  47 #define IRQ_VFLYBK      IOC_IRQ_IR      /* Start of display vertical flyback */
  48 /* Archimedes systems */
  49 #define IRQ_SLCI        IOC_IRQ_IL2     /* Serial line controller interrupt */
  50 #define IRQ_WIRQ        IOC_IRQ_IL3     /* Winchester interrupt request */
  51 #define IRQ_DCIRQ       IOC_IRQ_IL4     /* Disc change interrupt request */
  52 #define IRQ_PBSY        IOC_IRQ_IL6     /* Printer Busy Input */
  53 #define IRQ_RII         IOC_IRQ_IL7     /* Serial line ring indicator input */
  54 #define IRQ_PACK        IOC_IRQ_IF      /* Printer acknowledge input */
  55 /* IOEB systems */
  56 #define IRQ_SINTR       IOC_IRQ_IL2     /* Serial line interrupt */
  57 #define IRQ_IDEINTR     IOC_IRQ_IL3     /* IDE interrupt */
  58 #define IRQ_FINTR       IOC_IRQ_IL4     /* Floppy disc interrupt */
  59 #define IRQ_LPINTR      IOC_IRQ_IL6     /* Parallel port latched interrupt */
  60 #define IRQ_INDEX       IOC_IRQ_IF      /* Start of floppy disc index pulse */
  61
  62 /* IRQ numbers above 15 are non-IOC IRQs */
  63 #define IRQ_UNIXBP_BASE 16
  64
  65 struct irq_handler;
  66 struct evcnt;
  67
  68 extern void irq_init(void);
  69 /* irq_handler is declared in machdep.h */
  70 /* splx, raisespl and lowerspl are declared in intr.h */
  71 extern struct irq_handler *irq_establish(int, int, int(*)(void *), void *,
  72     struct evcnt *);
  73 extern char const *irq_string(struct irq_handler *);
  74 extern void irq_enable(struct irq_handler *);
  75 extern void irq_disable(struct irq_handler *);
  76 extern void irq_genmasks(void);
  77 extern void irq_stat(void (*)(const char *, ...));
  78 #endif