sys/sys/machintr.h

   1 /*
   2  * Copyright (c) 2005 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Matthew Dillon <dillon@backplane.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $DragonFly: src/sys/sys/machintr.h,v 1.7 2007/04/30 16:46:01 dillon Exp $
  35  */
  36 /*
  37  * This module defines the ABI for the machine-independant cpu interrupt
  38  * vector and masking layer.
  39  */
  40
  41 #ifndef _SYS_QUEUE_H_
  42 #include <sys/queue.h>
  43 #endif
  44
  45 enum machintr_type { MACHINTR_GENERIC, MACHINTR_ICU, MACHINTR_APIC };
  46
  47 #define MACHINTR_VAR_SIZEMASK   0xFFFF
  48
  49 #define MACHINTR_VAR_IMCR_PRESENT       (0x00010000|sizeof(int))
  50
  51 #define MACHINTR_VECTOR_SETUP           1
  52 #define MACHINTR_VECTOR_TEARDOWN        2
  53 #define MACHINTR_VECTOR_SETDEFAULT      3
  54
  55 /*
  56  * Machine interrupt ABIs - registered at boot-time
  57  */
  58 struct machintr_abi {
  59     enum machintr_type type;
  60     void        (*intrdis)(int);                /* hardware disable irq */
  61     void        (*intren)(int);                 /* hardware enable irq */
  62     int         (*vectorctl)(int, int, int);    /* hardware intr vector ctl */
  63     int         (*setvar)(int, const void *);   /* set miscellanious info */
  64     int         (*getvar)(int, void *);         /* get miscellanious info */
  65     void        (*finalize)(void);              /* final before ints enabled */
  66     void        (*cleanup)(void);               /* cleanup */
  67 };
  68
  69 #define machintr_intren(intr)   MachIntrABI.intren(intr)
  70 #define machintr_intrdis(intr)  MachIntrABI.intrdis(intr)
  71 #define machintr_vector_setup(intr, flags)      \
  72             MachIntrABI.vectorctl(MACHINTR_VECTOR_SETUP, intr, flags)
  73 #define machintr_vector_teardown(intr)          \
  74             MachIntrABI.vectorctl(MACHINTR_VECTOR_TEARDOWN, intr, 0)
  75 #define machintr_vector_setdefault(intr)        \
  76             MachIntrABI.vectorctl(MACHINTR_VECTOR_SETDEFAULT, intr, 0)
  77
  78 #ifdef _KERNEL
  79
  80 extern struct machintr_abi MachIntrABI;
  81 extern int machintr_setvar_simple(int, int);
  82
  83 #endif