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Annotation of kernel/machdep/i386/intr_internal.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /*
        !            26:  * Copyright (c) 1992 NeXT Computer, Inc.
        !            27:  *
        !            28:  * Interrupt handling internal definitions.
        !            29:  *
        !            30:  * HISTORY
        !            31:  *
        !            32:  * 10 July 1993 ? at NeXT
        !            33:  *     Removed 'arg' from interrupt support.
        !            34:  * 5 July 1993 ? at NeXT
        !            35:  *     Removed software interrupt support.
        !            36:  * 22 August 1992 ? at NeXT
        !            37:  *     Added software interrupts.
        !            38:  * 1 June 1992 ? at NeXT
        !            39:  *     Created.
        !            40:  */
        !            41:  
        !            42: typedef struct {
        !            43:     unsigned short     
        !            44:                        mask            :16;
        !            45: } intr_irq_mask_t;
        !            46: 
        !            47: #define INTR_VECT_OFF          0x40    // vector that IRQ0 corresponds to
        !            48: #define INTR_NIRQ              16      // number of IRQs available
        !            49: #define INTR_SLAVE_IRQ         2       // IRQ of slave
        !            50: #define INTR_MASK_IRQ(x)       ((unsigned short) (1 << (x)))
        !            51: #define INTR_MASK_SLAVE                INTR_MASK_IRQ(INTR_SLAVE_IRQ)
        !            52: #define INTR_MASK_ALL          ((unsigned short) (-1 & ~INTR_MASK_SLAVE))
        !            53: #define INTR_MASK_NONE         ((unsigned short) (0  & ~INTR_MASK_SLAVE))
        !            54: 
        !            55: typedef struct {
        !            56:     unsigned int       which;
        !            57:     void               (*routine)();
        !            58:     int                        ipl;
        !            59: } intr_dispatch_t;

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