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

     /*
      * Copyright (c) 1997, Stefan Esser <se@freebsd.org>
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice unmodified, this list of conditions, and the following
     *    disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    
    /* XXX currently dev_instance must be set to the ISA device_id or -1 for PCI */
    #define INTR_FAST               0x00000001 /* fast interrupt handler */
    #define INTR_EXCL               0x00010000 /* excl. intr, default is shared */
    
    typedef void swihand_t __P((void));
    
    struct intrec *intr_create(void *dev_instance, int irq, inthand2_t handler,
                               void *arg, intrmask_t *maskptr, int flags);
    
    int intr_destroy(struct intrec *idesc);
    
    int intr_connect(struct intrec *idesc);
    int intr_disconnect(struct intrec *idesc);
    
    void    register_swi __P((int intr, swihand_t *handler));
    void    swi_dispatcher __P((int intr));
    swihand_t swi_generic;
    swihand_t swi_null;
    void    unregister_swi __P((int intr, swihand_t *handler));
    
    /* XXX emulate old interface for now ... */
    int register_intr __P((int intr, int device_id, u_int flags,
                           inthand2_t *handler, u_int *maskptr, int unit));
    int unregister_intr(int intr, inthand2_t handler);
    
    #ifdef NHWI
    /* XXX type change in middle; MI code uses only the top NSWI entries. */
    extern swihand_t *ihandlers[NHWI + NSWI];
    #endif

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