sys/sys/interrupt.h

   1 /*-
   2  * Copyright (c) 1993 The Regents of the University of California.
   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, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33 /*
  34  * Copyright (c) 1997, Stefan Esser <se@freebsd.org>
  35  * All rights reserved.
  36  *
  37  * Redistribution and use in source and binary forms, with or without
  38  * modification, are permitted provided that the following conditions
  39  * are met:
  40  * 1. Redistributions of source code must retain the above copyright
  41  *    notice unmodified, this list of conditions, and the following
  42  *    disclaimer.
  43  * 2. Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in the
  45  *    documentation and/or other materials provided with the distribution.
  46  *
  47  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  48  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  49  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  50  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  51  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  52  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  53  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  54  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  55  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  56  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  57  *
  58  * $FreeBSD: src/sys/sys/interrupt.h,v 1.9.2.1 2001/10/14 20:05:50 luigi Exp $
  59  * $FreeBSD: src/sys/i386/include/ipl.h,v 1.17.2.3 2002/12/17 18:04:02 sam Exp $
  60  * $DragonFly: src/sys/sys/interrupt.h,v 1.19 2008/05/14 11:59:24 sephe Exp $
  61  */
  62
  63 #ifndef _SYS_INTERRUPT_H_
  64 #define _SYS_INTERRUPT_H_
  65
  66 /*
  67  * System hard and soft interrupt limits.  Note that the architecture may
  68  * further limit available hardware and software interrupts.
  69  */
  70 #define MAX_HARDINTS    64
  71 #define MAX_SOFTINTS    64
  72 #define FIRST_SOFTINT   MAX_HARDINTS
  73 #define MAX_INTS        (MAX_HARDINTS + MAX_SOFTINTS)
  74
  75 typedef void inthand2_t (void *, void *);
  76
  77 /*
  78  * Software interrupt bit numbers in priority order.  The priority only
  79  * determines which swi will be dispatched next; a higher priority swi
  80  * may be dispatched when a nested h/w interrupt handler returns.
  81  */
  82 #define SWI_TTY         (FIRST_SOFTINT + 0)
  83 #define SWI_UNUSED01    (FIRST_SOFTINT + 1)
  84 #define SWI_CAMNET      (FIRST_SOFTINT + 2)
  85 #define SWI_CRYPTO      SWI_CAMNET
  86 #define SWI_CAMBIO      (FIRST_SOFTINT + 3)
  87 #define SWI_VM          (FIRST_SOFTINT + 4)
  88 #define SWI_TQ          (FIRST_SOFTINT + 5)
  89 #define SWI_UNUSED02    (FIRST_SOFTINT + 6)
  90
  91 /*
  92  * Corresponding interrupt-pending bits for spending.  NOTE: i386 only
  93  * supports 32 software interupts (due to its gd_spending mask).
  94  */
  95 #define SWI_TTY_PENDING         (1 << (SWI_TTY - FIRST_SOFTINT))
  96 #define SWI_UNUSED01_PENDING    (1 << (SWI_UNUSED01 - FIRST_SOFTINT))
  97 #define SWI_CAMNET_PENDING      (1 << (SWI_CAMNET - FIRST_SOFTINT))
  98 #define SWI_CRYPTO_PENDING      SWI_CAMNET_PENDING
  99 #define SWI_CAMBIO_PENDING      (1 << (SWI_CAMBIO - FIRST_SOFTINT))
 100 #define SWI_VM_PENDING          (1 << (SWI_VM - FIRST_SOFTINT))
 101 #define SWI_TQ_PENDING          (1 << (SWI_TQ - FIRST_SOFTINT))
 102 #define SWI_UNUSED02_PENDING    (1 << (SWI_UNUSED02 - FIRST_SOFTINT))
 103
 104 #ifdef _KERNEL
 105
 106 struct intrframe;
 107 struct thread;
 108 struct lwkt_serialize;
 109 void *register_swi(int intr, inthand2_t *handler, void *arg,
 110                             const char *name,
 111                             struct lwkt_serialize *serializer);
 112 void *register_int(int intr, inthand2_t *handler, void *arg,
 113                             const char *name,
 114                             struct lwkt_serialize *serializer, int flags);
 115 long get_interrupt_counter(int intr);
 116 int count_registered_ints(int intr);
 117 const char *get_registered_name(int intr);
 118
 119 void swi_setpriority(int intr, int pri);
 120 void unregister_swi(void *id);
 121 void unregister_int(void *id);
 122 void register_randintr(int intr);
 123 void unregister_randintr(int intr);
 124 int next_registered_randintr(int intr);
 125 void sched_ithd(int intr);      /* procedure called from MD */
 126 void forward_fastint_remote(void *arg);         /* MD procedure (SMP) */
 127 int ithread_cpuid(int intr);
 128
 129 extern char     eintrnames[];   /* end of intrnames[] */
 130 extern char     intrnames[];    /* string table containing device names */
 131
 132 #endif
 133 #endif