FreeBSD/Linux Kernel Cross Reference
sys/dev/bktr/bktr_os.h

     /* $FreeBSD$ */
     
     /*
      * This is part of the Driver for Video Capture Cards (Frame grabbers)
      * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
      * chipset.
      * Copyright Roger Hardiman and Amancio Hasty.
      *
      * bktr_os : This has all the Operating System dependant code.
     *
     */
    
    /*-
     * 1. Redistributions of source code must retain the 
     * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
     * 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, 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.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Amancio Hasty and
     *      Roger Hardiman
     * 4. The name of the author may not be used to endorse or promote products 
     *    derived from this software without specific prior written permission.
     *
     * 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.
     */
    
    
    /******************************/
    /* *** Memory Allocation  *** */
    /******************************/
    #if (defined(__FreeBSD__) || defined(__bsdi__))
    vm_offset_t     get_bktr_mem( int unit, unsigned size );
    #endif
    
    #if (defined(__NetBSD__) || defined(__OpenBSD__))
    vm_offset_t     get_bktr_mem(bktr_ptr_t, bus_dmamap_t *, unsigned size);
    void            free_bktr_mem(bktr_ptr_t, bus_dmamap_t, vm_offset_t);
    #endif 
    
    /************************************/
    /* *** Interrupt Enable/Disable *** */
    /************************************/
    #if defined(__FreeBSD__)
    #if (__FreeBSD_version >=500000)
    #define USE_VBIMUTEX
    #define DECLARE_INTR_MASK(s)    /* no need to declare 's' */
    #define DISABLE_INTR(s)
    #define ENABLE_INTR(s)
    #else
    #define DECLARE_INTR_MASK(s)    intrmask_t s
    #define DISABLE_INTR(s)         s=spltty()
    #define ENABLE_INTR(s)          splx(s)
    #endif
    #else
    #define DECLARE_INTR_MASK(s)    /* no need to declare 's' */
    #define DISABLE_INTR(s)         disable_intr()
    #define ENABLE_INTR(s)          enable_intr()
    #endif
    
    #ifdef USE_VBIMUTEX
    #define LOCK_VBI(bktr)          mtx_lock(&bktr->vbimutex)
    #define UNLOCK_VBI(bktr)        mtx_unlock(&bktr->vbimutex)
    #else
    #define LOCK_VBI(bktr)
    #define UNLOCK_VBI(bktr)
    #endif

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