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/i386at/pic_isa.c

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    1 /* 
    2  * Mach Operating System
    3  * Copyright (c) 1991,1990 Carnegie Mellon University
    4  * All Rights Reserved.
    5  * 
    6  * Permission to use, copy, modify and distribute this software and its
    7  * documentation is hereby granted, provided that both the copyright
    8  * notice and this permission notice appear in all copies of the
    9  * software, derivative works or modified versions, and any portions
   10  * thereof, and that both notices appear in supporting documentation.
   11  * 
   12  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   13  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
   14  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   15  * 
   16  * Carnegie Mellon requests users of this software to return to
   17  * 
   18  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   19  *  School of Computer Science
   20  *  Carnegie Mellon University
   21  *  Pittsburgh PA 15213-3890
   22  * 
   23  * any improvements or extensions that they make and grant Carnegie Mellon
   24  * the rights to redistribute these changes.
   25  */
   26 /* 
   27  * HISTORY
   28  * $Log:        pic_isa.c,v $
   29  * Revision 2.5  91/05/14  16:29:38  mrt
   30  *      Correcting copyright
   31  * 
   32  * Revision 2.4  91/02/05  17:20:18  mrt
   33  *      Changed to new Mach copyright
   34  *      [91/02/01  17:46:58  mrt]
   35  * 
   36  * Revision 2.3  91/01/08  17:33:40  rpd
   37  *      Initially, do not allow clock interrupts
   38  *      [91/01/04  12:21:54  rvb]
   39  * 
   40  * Revision 2.2  90/11/26  14:50:57  rvb
   41  *      jsb bet me to XMK34, sigh ...
   42  *      [90/11/26            rvb]
   43  *      Apparently first revision is -r2.2
   44  *      [90/11/25  10:47:33  rvb]
   45  * 
   46  *      Synched 2.5 & 3.0 at I386q (r2.1.1.2) & XMK35 (r2.2)
   47  *      [90/11/15            rvb]
   48  * 
   49  *      We don't want to see clock interrupts till clkstart(),
   50  *      but we can not turn the interrupt off so we disable them.
   51  *      2.5 ONLY!
   52  *      [90/11/05            rvb]
   53  *      Created based on pic.c
   54  *      [90/06/16            rvb]
   55  * 
   56  */
   57 
   58 #include <sys/types.h>
   59 #include <i386/ipl.h>
   60 #include <i386/pic.h>
   61 
   62 
   63 /* These interrupts are always present */
   64 extern intnull(), fpintr(), hardclock(), kdintr();
   65 extern prtnull();
   66 
   67 int (*ivect[NINTR])() = {
   68         /* 00 */        hardclock,      /* always */
   69         /* 01 */        kdintr,         /* kdintr, ... */
   70         /* 02 */        intnull,
   71         /* 03 */        intnull,        /* lnpoll, comintr, ... */
   72 
   73         /* 04 */        intnull,        /* comintr, ... */
   74         /* 05 */        intnull,        /* comintr, wtintr, ... */
   75         /* 06 */        intnull,        /* fdintr, ... */
   76         /* 07 */        prtnull,        /* qdintr, ... */
   77 
   78         /* 08 */        intnull,
   79         /* 09 */        intnull,        /* ether */
   80         /* 10 */        intnull,
   81         /* 11 */        intnull,
   82 
   83         /* 12 */        intnull,
   84         /* 13 */        fpintr,         /* always */
   85         /* 14 */        intnull,        /* hdintr, ... */
   86         /* 15 */        intnull,        /* ??? */
   87 };
   88 
   89 u_char intpri[NINTR] = {
   90         /* 00 */        0,      SPL6,   0,      0,
   91         /* 04 */        0,      0,      0,      0,
   92         /* 08 */        0,      0,      0,      0,
   93         /* 12 */        0,      SPL1,   0,      0,
   94 };

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