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


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/i386/isa/icu.h

Version: -  FREEBSD  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-2  -  FREEBSD-11-1  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-4  -  FREEBSD-10-3  -  FREEBSD-10-2  -  FREEBSD-10-1  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-3  -  FREEBSD-9-2  -  FREEBSD-9-1  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-4  -  FREEBSD-8-3  -  FREEBSD-8-2  -  FREEBSD-8-1  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-4  -  FREEBSD-7-3  -  FREEBSD-7-2  -  FREEBSD-7-1  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-4  -  FREEBSD-6-3  -  FREEBSD-6-2  -  FREEBSD-6-1  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-5  -  FREEBSD-5-4  -  FREEBSD-5-3  -  FREEBSD-5-2  -  FREEBSD-5-1  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
SearchContext: -  none  -  3  -  10 

    1 /*-
    2  * Copyright (c) 1990 The Regents of the University of California.
    3  * All rights reserved.
    4  *
    5  * This code is derived from software contributed to Berkeley by
    6  * William Jolitz.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 3. All advertising materials mentioning features or use of this software
   17  *    must display the following acknowledgement:
   18  *      This product includes software developed by the University of
   19  *      California, Berkeley and its contributors.
   20  * 4. Neither the name of the University nor the names of its contributors
   21  *    may be used to endorse or promote products derived from this software
   22  *    without specific prior written permission.
   23  *
   24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   34  * SUCH DAMAGE.
   35  *
   36  *      from: @(#)icu.h 5.6 (Berkeley) 5/9/91
   37  * $FreeBSD: src/sys/i386/isa/icu.h,v 1.8.2.1 1999/09/05 08:12:39 peter Exp $
   38  */
   39 
   40 /*
   41  * AT/386 Interrupt Control constants
   42  * W. Jolitz 8/89
   43  */
   44 
   45 #ifndef _I386_ISA_ICU_H_
   46 #define _I386_ISA_ICU_H_
   47 
   48 #ifndef LOCORE
   49 
   50 /*
   51  * Interrupt "level" mechanism variables, masks, and macros
   52  */
   53 extern  unsigned imen;          /* interrupt mask enable */
   54 
   55 #define INTREN(s)               (imen &= ~(s), SET_ICUS())
   56 #define INTRDIS(s)              (imen |= (s), SET_ICUS())
   57 #define INTRMASK(msk,s)         (msk |= (s))
   58 #define INTRUNMASK(msk,s)       (msk &= ~(s))
   59 #if 0
   60 #ifdef PC98
   61 #define SET_ICUS()      (outb(IO_ICU1 + 2, imen), outb(IU_ICU2 + 2, imen >> 8))
   62 #else   /* IBM-PC */
   63 #define SET_ICUS()      (outb(IO_ICU1 + 1, imen), outb(IU_ICU2 + 1, imen >> 8))
   64 #endif  /* PC98 */
   65 #else
   66 /*
   67  * XXX - IO_ICU* are defined in isa.h, not icu.h, and nothing much bothers to
   68  * include isa.h, while too many things include icu.h.
   69  */
   70 #ifdef PC98
   71 #define SET_ICUS()      (outb(0x02, imen), outb(0x0a, imen >> 8))
   72 #else
   73 #define SET_ICUS()      (outb(0x21, imen), outb(0xa1, imen >> 8))
   74 #endif
   75 #endif
   76 
   77 #endif /* LOCORE */
   78 
   79 /*
   80  * Interrupt enable bits - in normal order of priority (which we change)
   81  */
   82 #define IRQ0            0x0001          /* highest priority - timer */
   83 #define IRQ1            0x0002
   84 #define IRQ_SLAVE       0x0004
   85 #define IRQ8            0x0100
   86 #define IRQ9            0x0200
   87 #define IRQ2            IRQ9
   88 #define IRQ10           0x0400
   89 #define IRQ11           0x0800
   90 #define IRQ12           0x1000
   91 #define IRQ13           0x2000
   92 #define IRQ14           0x4000
   93 #define IRQ15           0x8000
   94 #define IRQ3            0x0008          /* this is highest after rotation */
   95 #define IRQ4            0x0010
   96 #define IRQ5            0x0020
   97 #define IRQ6            0x0040
   98 #define IRQ7            0x0080          /* lowest - parallel printer */
   99 
  100 #ifdef PC98
  101 #undef  IRQ2
  102 #define IRQ2            0x0004
  103 #undef  IRQ_SLAVE
  104 #define IRQ_SLAVE       0x0080
  105 #endif
  106 
  107 /*
  108  * Interrupt Control offset into Interrupt descriptor table (IDT)
  109  */
  110 #define ICU_OFFSET      32              /* 0-31 are processor exceptions */
  111 #define ICU_LEN         16              /* 32-47 are ISA interrupts */
  112 
  113 #endif /* !_I386_ISA_ICU_H_ */

Cache object: dc302d71cb6a69a2bf599589276562ee


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.