The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/interrupt.h

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    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    192
   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, int cpuid);
  112 void *register_swi_mp(int intr, inthand2_t *handler, void *arg,
  113                             const char *name,
  114                             struct lwkt_serialize *serializer, int cpuid);
  115 void *register_int(int intr, inthand2_t *handler, void *arg,
  116                             const char *name,
  117                             struct lwkt_serialize *serializer, int flags,
  118                             int cpuid);
  119 long get_interrupt_counter(int intr, int cpuid);
  120 
  121 void unregister_swi(void *id, int intr, int cpuid);
  122 void unregister_int(void *id, int cpuid);
  123 void register_randintr(int intr);
  124 void unregister_randintr(int intr);
  125 int next_registered_randintr(int intr);
  126 void sched_ithd_soft(int intr); /* procedure called from MD */
  127 void sched_ithd_hard(int intr); /* procedure called from MD */
  128 
  129 #ifdef _KERNEL_VIRTUAL
  130 void *register_int_virtual(int intr, inthand2_t *handler, void *arg,
  131     const char *name, struct lwkt_serialize *serializer, int flags);
  132 void unregister_int_virtual(void *id);
  133 void sched_ithd_hard_virtual(int intr);
  134 #endif
  135 
  136 extern char     eintrnames[];   /* end of intrnames[] */
  137 extern char     intrnames[];    /* string table containing device names */
  138 
  139 #endif
  140 #endif

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