sys/arch/arm/footbridge/isa/icu.h

   1 /*      $NetBSD: icu.h,v 1.1.22.3 2004/09/21 13:13:18 skrll Exp $       */
   2
   3 /*-
   4  * Copyright (c) 1990 The Regents of the University of California.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * William Jolitz.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)icu.h       5.6 (Berkeley) 5/9/91
  35  */
  36
  37 /*
  38  * AT/386 Interrupt Control constants
  39  * W. Jolitz 8/89
  40  */
  41
  42 #ifndef _ARM32_ISA_ICU_H_
  43 #define _ARM32_ISA_ICU_H_
  44
  45 #ifndef _LOCORE
  46
  47 /*
  48  * Interrupt "level" mechanism variables, masks, and macros
  49  */
  50 extern  unsigned imen;          /* interrupt mask enable */
  51
  52 #define SET_ICUS()      {               \
  53         outb(IO_ICU1 + 1, imen);        \
  54         outb(IO_ICU2 + 1, imen >> 8);   \
  55 }
  56
  57 #endif /* !_LOCORE */
  58
  59 /*
  60  * Interrupt enable bits -- in order of priority
  61  */
  62 #define IRQ_SLAVE       2
  63
  64 /*
  65  * Interrupt Control offset into Interrupt descriptor table (IDT)
  66  */
  67 #define ICU_OFFSET      32              /* 0-31 are processor exceptions */
  68 #define ICU_LEN         16              /* 32-47 are ISA interrupts */
  69
  70 #endif /* !_ARM32_ISA_ICU_H_ */