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Annotation of kernel/machdep/i386/intr_exported.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 exported definitions.
        !            29:  *
        !            30:  * HISTORY
        !            31:  *
        !            32:  * 10 July 1993 ? at NeXT
        !            33:  *     Removed 'arg' from interrupt support.
        !            34:  *     Removed old obsolete API.
        !            35:  *     Cleaned up somewhat.
        !            36:  * 5 July 1993 ? at NeXT
        !            37:  *     Removed software interrupt support.
        !            38:  * 26 August 1992 ? at NeXT
        !            39:  *     Major rev for driverkit support.
        !            40:  * 22 August 1992 ? at NeXT
        !            41:  *     Added software interrupts.
        !            42:  * 20 Aug 1992 Joe Pasqua
        !            43:  *     Added protoypes for intr_enable_irq/disable_irq.
        !            44:  * 1 June 1992 ? at NeXT
        !            45:  *     Created.
        !            46:  */
        !            47: 
        !            48: #import <mach/mach_types.h>
        !            49: 
        !            50: /*
        !            51:  * A total of eight interrupt
        !            52:  * levels are provided.
        !            53:  */
        !            54: #define INTR_NIPL      8
        !            55: 
        !            56: #define INTR_IPL0      0
        !            57: #define INTR_IPL1      1
        !            58: #define INTR_IPL2      2
        !            59: #define INTR_IPL3      3
        !            60: #define INTR_IPL4      4
        !            61: #define INTR_IPL5      5
        !            62: #define INTR_IPL6      6
        !            63: #define INTR_IPL7      7
        !            64: 
        !            65: #define INTR_IPLHI     INTR_IPL7
        !            66: 
        !            67: typedef void
        !            68: (*intr_handler_t)(
        !            69:        unsigned int            which,
        !            70:        void                    *state,
        !            71:        int                     old_ipl
        !            72: );
        !            73: 
        !            74: /*
        !            75:  * Exported routines.
        !            76:  */
        !            77: 
        !            78: /*
        !            79:  * Core routines.
        !            80:  */
        !            81: void
        !            82: intr_initialize(void);
        !            83: 
        !            84: void
        !            85: intr_handler(
        !            86:        void            *state
        !            87: );
        !            88:                                
        !            89: /*
        !            90:  * Hardware IRQ support.
        !            91:  */
        !            92: boolean_t
        !            93: intr_register_irq(
        !            94:        int             irq,
        !            95:        intr_handler_t  routine,
        !            96:        unsigned int    which,
        !            97:        int             ipl
        !            98: );
        !            99: 
        !           100: boolean_t
        !           101: intr_unregister_irq(
        !           102:        int             irq
        !           103: );
        !           104: 
        !           105: boolean_t
        !           106: intr_enable_irq(
        !           107:        int             irq
        !           108: );
        !           109: 
        !           110: boolean_t
        !           111: intr_disable_irq(
        !           112:        int             irq
        !           113: );
        !           114: 
        !           115: boolean_t
        !           116: intr_change_ipl(
        !           117:        int             irq,
        !           118:        int             ipl
        !           119: );
        !           120: 
        !           121: boolean_t
        !           122: intr_change_mode(
        !           123:        int             irq,
        !           124:        boolean_t       level_trig
        !           125: );
        !           126:                                
        !           127: /*
        !           128:  * Miscellaneous routines.
        !           129:  */
        !           130: boolean_t
        !           131: intr_disbl(void);
        !           132: 
        !           133: boolean_t
        !           134: intr_enbl(
        !           135:        boolean_t       enable
        !           136: );

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