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

     /*      $NetBSD: intr.h,v 1.7.10.1 2009/02/02 03:39:18 snj Exp $        */
     
     /*-
      * Copyright (c) 2007 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Andrew Doran.
      *
     * 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, 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     * ``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 FOUNDATION OR CONTRIBUTORS
     * 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.
     */
    
    #ifndef _SYS_INTR_H_
    #define _SYS_INTR_H_
    
    #include <machine/intr.h>
    
    #ifdef _KERNEL
    
    struct cpu_info;
    
    /* Public interface. */
    void    *softint_establish(u_int, void (*)(void *), void *);
    void    softint_disestablish(void *);
    void    softint_schedule(void *);
    
    /* MI hooks. */
    void    softint_init(struct cpu_info *);
    lwp_t   *softint_picklwp(void);
    void    softint_overlay(void);
    void    softint_block(lwp_t *);
    
    /* MD-MI interface. */
    void    softint_init_md(lwp_t *, u_int, uintptr_t *);
    void    softint_trigger(uintptr_t);
    void    softint_dispatch(lwp_t *, int);
    
    /* Flags for softint_establish(). */
    #define SOFTINT_BIO     0x0000
    #define SOFTINT_CLOCK   0x0001
    #define SOFTINT_SERIAL  0x0002
    #define SOFTINT_NET     0x0003
    #define SOFTINT_MPSAFE  0x0100
    
    /* Implementation private flags. */
    #define SOFTINT_PENDING 0x1000
    #define SOFTINT_ACTIVE  0x2000
    
    #define SOFTINT_COUNT   0x0004
    #define SOFTINT_LVLMASK 0x00ff
    #define SOFTINT_IMPMASK 0xf000
    
    extern u_int    softint_timing;
    extern int      safepri;
    
    /*
     * Historical aliases.  XXX Audio devices should run at
     * IPL_SCHED, but they need to acquire kernel_lock.
     */
    #define IPL_BIO         IPL_VM
    #define IPL_NET         IPL_VM
    #define IPL_TTY         IPL_VM
    #define IPL_LPT         IPL_VM
    #define IPL_AUDIO       IPL_VM
    #define IPL_CLOCK       IPL_SCHED
    #define IPL_IPI         IPL_HIGH
    #define IPL_SERIAL      IPL_HIGH
    
    #define splbio()        splvm()
    #define splnet()        splvm()
    #define spltty()        splvm()
    #define spllpt()        splvm()
    #define splaudio()      splvm()
    #define splclock()      splsched()
    #define splipi()        splhigh()
    #define splserial()     splhigh()
    
    #endif  /* _KERNEL */
    
    #endif  /* _SYS_INTR_H_ */

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