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Annotation of kernel/machdep/i386/intr_internal.h, revision 1.1.1.1

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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