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/dev/dec/mcclock_pad32.h

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    1 /*      $NetBSD: mcclock_pad32.h,v 1.10 2000/02/11 02:36:16 simonb Exp $        */
    2 
    3 /*
    4  * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
    5  * All rights reserved.
    6  *
    7  * Author: Chris G. Demetriou
    8  *
    9  * Permission to use, copy, modify and distribute this software and
   10  * its documentation is hereby granted, provided that both the copyright
   11  * notice and this permission notice appear in all copies of the
   12  * software, derivative works or modified versions, and any portions
   13  * thereof, and that both notices appear in supporting documentation.
   14  *
   15  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   16  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
   17  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   18  *
   19  * Carnegie Mellon requests users of this software to return to
   20  *
   21  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   22  *  School of Computer Science
   23  *  Carnegie Mellon University
   24  *  Pittsburgh PA 15213-3890
   25  *
   26  * any improvements or extensions that they make and grant Carnegie the
   27  * rights to redistribute these changes.
   28  */
   29 
   30 
   31 /*
   32  * mc1461818 (or compatible) clock driver, for machines where
   33  * each byte-wide mcclock chip register is  mapped into the low-order
   34  * byte of a little-endian 32-bit word,
   35  *  DECstation 2100/3100
   36  *  DECstation 5100
   37  *  DECstation 5000/200 baseboard
   38  *  IOCTL asic machines (Alpha  3000 series, Decstation 5000 series)
   39  */
   40 struct mcclock_pad32_clockdatum {
   41         u_char  datum;
   42         char    pad[3];
   43 };
   44 
   45 /*
   46  * Device softc used by bus-specific front-end.
   47  */
   48 struct mcclock_pad32_softc {
   49         struct mcclock_softc    sc_mcclock;
   50         struct mcclock_pad32_clockdatum *sc_dp;
   51 };
   52 
   53 /* register read/write functions */
   54 extern const struct mcclock_busfns mcclock_pad32_busfns;

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