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. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29 /*
  30  * Copyright (c) 1997, Stefan Esser <se@freebsd.org>
  31  * All rights reserved.
  32  *
  33  * Redistribution and use in source and binary forms, with or without
  34  * modification, are permitted provided that the following conditions
  35  * are met:
  36  * 1. Redistributions of source code must retain the above copyright
  37  *    notice unmodified, this list of conditions, and the following
  38  *    disclaimer.
  39  * 2. Redistributions in binary form must reproduce the above copyright
  40  *    notice, this list of conditions and the following disclaimer in the
  41  *    documentation and/or other materials provided with the distribution.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  44  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  45  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  46  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  47  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  48  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  49  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  50  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  51  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  52  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  53  *
  54  * $FreeBSD: src/sys/sys/interrupt.h,v 1.9.2.1 2001/10/14 20:05:50 luigi Exp $
  55  * $FreeBSD: src/sys/i386/include/ipl.h,v 1.17.2.3 2002/12/17 18:04:02 sam Exp $
  56  * $DragonFly: src/sys/sys/interrupt.h,v 1.19 2008/05/14 11:59:24 sephe Exp $
  57  */
  58
  59 #ifndef _SYS_INTERRUPT_H_
  60 #define _SYS_INTERRUPT_H_
  61
  62 /*
  63  * System hard and soft interrupt limits.  Note that the architecture may
  64  * further limit available hardware and software interrupts.
  65  */
  66 #define MAX_HARDINTS    192
  67 #define MAX_SOFTINTS    64
  68 #define FIRST_SOFTINT   MAX_HARDINTS
  69 #define MAX_INTS        (MAX_HARDINTS + MAX_SOFTINTS)
  70
  71 typedef void inthand2_t (void *, void *);
  72
  73 /*
  74  * Software interrupt bit numbers in priority order.  The priority only
  75  * determines which swi will be dispatched next; a higher priority swi
  76  * may be dispatched when a nested h/w interrupt handler returns.
  77  */
  78 #define SWI_TTY         (FIRST_SOFTINT + 0)
  79 #define SWI_UNUSED01    (FIRST_SOFTINT + 1)
  80 #define SWI_CAMNET      (FIRST_SOFTINT + 2)
  81 #define SWI_CRYPTO      SWI_CAMNET
  82 #define SWI_CAMBIO      (FIRST_SOFTINT + 3)
  83 #define SWI_VM          (FIRST_SOFTINT + 4)
  84 #define SWI_TQ          (FIRST_SOFTINT + 5)
  85 #define SWI_UNUSED02    (FIRST_SOFTINT + 6)
  86
  87 /*
  88  * Corresponding interrupt-pending bits for spending.  NOTE: i386 only
  89  * supports 32 software interupts (due to its gd_spending mask).
  90  */
  91 #define SWI_TTY_PENDING         (1 << (SWI_TTY - FIRST_SOFTINT))
  92 #define SWI_UNUSED01_PENDING    (1 << (SWI_UNUSED01 - FIRST_SOFTINT))
  93 #define SWI_CAMNET_PENDING      (1 << (SWI_CAMNET - FIRST_SOFTINT))
  94 #define SWI_CRYPTO_PENDING      SWI_CAMNET_PENDING
  95 #define SWI_CAMBIO_PENDING      (1 << (SWI_CAMBIO - FIRST_SOFTINT))
  96 #define SWI_VM_PENDING          (1 << (SWI_VM - FIRST_SOFTINT))
  97 #define SWI_TQ_PENDING          (1 << (SWI_TQ - FIRST_SOFTINT))
  98 #define SWI_UNUSED02_PENDING    (1 << (SWI_UNUSED02 - FIRST_SOFTINT))
  99
 100 #ifdef _KERNEL
 101
 102 struct intrframe;
 103 struct thread;
 104 struct lwkt_serialize;
 105 void *register_swi(int intr, inthand2_t *handler, void *arg,
 106                             const char *name,
 107                             struct lwkt_serialize *serializer, int cpuid);
 108 void *register_swi_mp(int intr, inthand2_t *handler, void *arg,
 109                             const char *name,
 110                             struct lwkt_serialize *serializer, int cpuid);
 111 void *register_int(int intr, inthand2_t *handler, void *arg,
 112                             const char *name,
 113                             struct lwkt_serialize *serializer, int flags,
 114                             int cpuid);
 115 long get_interrupt_counter(int intr, int cpuid);
 116
 117 void unregister_swi(void *id, int intr, int cpuid);
 118 void unregister_int(void *id, int cpuid);
 119 void register_randintr(int intr);
 120 void unregister_randintr(int intr);
 121 int next_registered_randintr(int intr);
 122 void sched_ithd_soft(int intr); /* procedure called from MD */
 123 void sched_ithd_hard(int intr); /* procedure called from MD */
 124
 125 #ifdef _KERNEL_VIRTUAL
 126 void *register_int_virtual(int intr, inthand2_t *handler, void *arg,
 127     const char *name, struct lwkt_serialize *serializer, int flags);
 128 void unregister_int_virtual(void *id);
 129 void sched_ithd_hard_virtual(int intr);
 130 #endif
 131
 132 extern char     eintrnames[];   /* end of intrnames[] */
 133 extern char     intrnames[];    /* string table containing device names */
 134
 135 #endif
 136 #endif