The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/include/dvcfg.h

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    1 /*      $NetBSD$        */
    2 /*
    3  * [NetBSD for NEC PC98 series]
    4  *  Copyright (c) 1996 NetBSD/pc98 porting staff.
    5  *  All rights reserved.
    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  *  1. Redistributions of source code must retain the above copyright
   11  *     notice, this list of conditions and the following disclaimer.
   12  *  2. Redistributions in binary form must reproduce the above copyright
   13  *     notice, this list of conditions and the following disclaimer in the
   14  *     documentation and/or other materials provided with the distribution.
   15  *  3. The name of the author may not be used to endorse or promote products
   16  *     derived from this software without specific prior written permission.
   17  * 
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   21  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
   22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   24  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   28  * POSSIBILITY OF SUCH DAMAGE.
   29  */
   30 /*
   31  * Copyright (c) 1996 Naofumi HONDA.  All rights reserved.
   32  */
   33 
   34 #ifndef _I386_DVCFG_H_
   35 #define _I386_DVCFG_H_
   36 
   37 typedef void *dvcfg_hw_t;
   38 
   39 struct dvcfg_hwsel {
   40         int cfg_max;
   41 
   42         dvcfg_hw_t *cfg_sel;
   43 };
   44 
   45 #define DVCFG_MAJOR(dvcfg)      (((u_int)(dvcfg)) >> 16)
   46 #define DVCFG_MINOR(dvcfg)      (((u_int)(dvcfg)) & 0xffff)
   47 
   48 #define DVCFG_MKCFG(major, minor) ((((u_int)(major)) << 16) | ((minor) & 0xffff))
   49 
   50 #define DVCFG_HWSEL_SZ(array)   (sizeof(array) / sizeof(dvcfg_hw_t))
   51 
   52 static __inline dvcfg_hw_t dvcfg_hw __P((struct dvcfg_hwsel *, u_int));
   53 
   54 static __inline dvcfg_hw_t
   55 dvcfg_hw(selp, num)
   56         struct dvcfg_hwsel *selp;
   57         u_int num;
   58 {
   59 
   60         return ((num >= selp->cfg_max) ? 0 : selp->cfg_sel[num]);
   61 }
   62 
   63 #define DVCFG_HW(SELP, NUM)     dvcfg_hw((SELP), (NUM))
   64 #endif  /* _I386_DVCFG_H_ */

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