sys/sys/interrupt.h

   1 /*
   2  * Copyright (c) 1997, Stefan Esser <se@freebsd.org>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice unmodified, this list of conditions, and the following
  10  *    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  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/sys/sys/interrupt.h,v 1.9.2.1 2001/10/14 20:05:50 luigi Exp $
  27  * $DragonFly: src/sys/sys/interrupt.h,v 1.16 2005/11/21 18:02:46 dillon Exp $
  28  */
  29
  30 #ifndef _SYS_INTERRUPT_H_
  31 #define _SYS_INTERRUPT_H_
  32
  33 /*
  34  * System hard and soft interrupt limits.  Note that the architecture may
  35  * further limit available hardware and software interrupts.
  36  */
  37 #define MAX_HARDINTS    64
  38 #define MAX_SOFTINTS    64
  39 #define FIRST_SOFTINT   MAX_HARDINTS
  40 #define MAX_INTS        (MAX_HARDINTS + MAX_SOFTINTS)
  41
  42 typedef void inthand2_t (void *, void *);
  43
  44 #ifdef _KERNEL
  45
  46 struct intrframe;
  47 struct thread;
  48 struct lwkt_serialize;
  49 void *register_swi(int intr, inthand2_t *handler, void *arg,
  50                             const char *name,
  51                             struct lwkt_serialize *serializer);
  52 void *register_int(int intr, inthand2_t *handler, void *arg,
  53                             const char *name,
  54                             struct lwkt_serialize *serializer, int flags);
  55 long get_interrupt_counter(int intr);
  56 int count_registered_ints(int intr);
  57 const char *get_registered_name(int intr);
  58
  59 void swi_setpriority(int intr, int pri);
  60 void unregister_swi(void *id);
  61 void unregister_int(void *id);
  62 void register_randintr(int intr);
  63 void unregister_randintr(int intr);
  64 int next_registered_randintr(int intr);
  65 void sched_ithd(int intr);      /* procedure called from MD */
  66 void forward_fastint_remote(void *arg);         /* MD procedure (SMP) */
  67
  68 extern char     eintrnames[];   /* end of intrnames[] */
  69 extern char     intrnames[];    /* string table containing device names */
  70
  71 #endif
  72 #endif