[ac7d5ef0] | 1 | /* intr.h |
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| 2 | * |
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| 3 | * This include file contains all the constants and structures associated |
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| 4 | * with the Interrupt Manager. |
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| 5 | * |
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[03f2154e] | 6 | * COPYRIGHT (c) 1989-1997. |
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[ac7d5ef0] | 7 | * On-Line Applications Research Corporation (OAR). |
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[03f2154e] | 8 | * Copyright assigned to U.S. Government, 1994. |
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[ac7d5ef0] | 9 | * |
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[03f2154e] | 10 | * The license and distribution terms for this file may in |
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| 11 | * the file LICENSE in this distribution or at |
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| 12 | * http://www.OARcorp.com/rtems/license.html. |
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[ac7d5ef0] | 13 | * |
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| 14 | * $Id$ |
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| 15 | */ |
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| 16 | |
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| 17 | #ifndef __RTEMS_INTERRUPT_h |
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| 18 | #define __RTEMS_INTERRUPT_h |
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| 19 | |
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| 20 | #ifdef __cplusplus |
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| 21 | extern "C" { |
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| 22 | #endif |
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| 23 | |
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[5e9b32b] | 24 | #include <rtems/score/isr.h> |
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[ac7d5ef0] | 25 | |
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| 26 | /* |
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| 27 | * Interrupt level type |
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| 28 | */ |
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| 29 | |
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| 30 | typedef ISR_Level rtems_interrupt_level; |
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| 31 | |
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[3a4ae6c] | 32 | /* |
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| 33 | * The following type defines the control block used to manage |
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| 34 | * the vectors. |
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| 35 | */ |
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| 36 | |
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| 37 | typedef ISR_Vector_number rtems_vector_number; |
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| 38 | |
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| 39 | /* |
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| 40 | * Return type for ISR Handler |
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| 41 | */ |
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| 42 | |
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| 43 | typedef void rtems_isr; |
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| 44 | |
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| 45 | /* |
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| 46 | * Pointer to an ISR Handler |
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| 47 | */ |
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| 48 | |
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| 49 | typedef rtems_isr ( *rtems_isr_entry )( |
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| 50 | rtems_vector_number |
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| 51 | ); |
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| 52 | |
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[ac7d5ef0] | 53 | /* |
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| 54 | * _Interrupt_Manager_initialization |
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| 55 | * |
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| 56 | * DESCRIPTION: |
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| 57 | * |
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| 58 | * This routine initializes the interrupt manager. |
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| 59 | * |
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| 60 | */ |
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| 61 | |
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| 62 | void _Interrupt_Manager_initialization( void ); |
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| 63 | |
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| 64 | /* |
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| 65 | * rtems_interrupt_catch |
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| 66 | * |
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| 67 | * DESCRIPTION: |
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| 68 | * |
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| 69 | * This routine implements the rtems_interrupt_catch directive. This |
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| 70 | * directive installs new_isr_handler as the RTEMS interrupt service |
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| 71 | * routine for vector. The previous RTEMS interrupt service |
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| 72 | * routine is returned in old_isr_handler. |
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| 73 | */ |
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| 74 | |
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| 75 | rtems_status_code rtems_interrupt_catch( |
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[2c5d78b] | 76 | rtems_isr_entry new_isr_handler, |
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[ac7d5ef0] | 77 | rtems_vector_number vector, |
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[2c5d78b] | 78 | rtems_isr_entry *old_isr_handler |
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[ac7d5ef0] | 79 | ); |
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| 80 | |
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| 81 | /* |
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| 82 | * rtems_interrupt_disable |
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| 83 | * |
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| 84 | * DESCRIPTION: |
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| 85 | * |
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| 86 | * This routine disables all maskable interrupts and returns the |
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| 87 | * previous level in _isr_cookie. |
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| 88 | */ |
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| 89 | |
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| 90 | #define rtems_interrupt_disable( _isr_cookie ) \ |
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| 91 | _ISR_Disable(_isr_cookie) |
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| 92 | |
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| 93 | /* |
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| 94 | * rtems_interrupt_enable |
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| 95 | * |
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| 96 | * DESCRIPTION: |
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| 97 | * |
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| 98 | * This routine enables maskable interrupts to the level indicated |
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| 99 | * _isr_cookie. |
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| 100 | */ |
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| 101 | |
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| 102 | #define rtems_interrupt_enable( _isr_cookie ) \ |
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| 103 | _ISR_Enable(_isr_cookie) |
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| 104 | |
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| 105 | /* |
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| 106 | * rtems_interrupt_flash |
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| 107 | * |
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| 108 | * DESCRIPTION: |
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| 109 | * |
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| 110 | * This routine temporarily enables maskable interrupts to the |
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| 111 | * level in _isr_cookie before redisabling them. |
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| 112 | */ |
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| 113 | |
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| 114 | #define rtems_interrupt_flash( _isr_cookie ) \ |
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| 115 | _ISR_Flash(_isr_cookie) |
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| 116 | |
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[6dae1c2d] | 117 | /* |
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| 118 | * rtems_interrupt_is_in_progress |
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| 119 | * |
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| 120 | * DESCRIPTION: |
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| 121 | * |
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| 122 | * This function returns TRUE if the processor is currently servicing |
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[2c5d78b] | 123 | * an interrupt and FALSE otherwise. A return value of TRUE indicates |
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[6dae1c2d] | 124 | * that the caller is an interrupt service routine, NOT a thread. The |
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| 125 | * directives available to an interrupt service routine are restricted. |
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| 126 | */ |
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| 127 | |
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| 128 | #define rtems_interrupt_is_in_progress() \ |
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| 129 | _ISR_Is_in_progress() |
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| 130 | |
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[ac7d5ef0] | 131 | /* |
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| 132 | * rtems_interrupt_cause |
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| 133 | * |
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| 134 | * DESCRIPTION: |
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| 135 | * |
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| 136 | * This routine generates an interrupt. |
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| 137 | * |
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| 138 | * NOTE: No implementation. |
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| 139 | */ |
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| 140 | |
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| 141 | #define rtems_interrupt_cause( _interrupt_to_cause ) |
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| 142 | |
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| 143 | /* |
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| 144 | * rtems_interrupt_cause |
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| 145 | * |
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| 146 | * DESCRIPTION: |
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| 147 | * |
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| 148 | * This routine clears the specified interrupt. |
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| 149 | * |
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| 150 | * NOTE: No implementation. |
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| 151 | */ |
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| 152 | |
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| 153 | #define rtems_interrupt_clear( _interrupt_to_clear ) |
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| 154 | |
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| 155 | #ifdef __cplusplus |
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| 156 | } |
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| 157 | #endif |
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| 158 | |
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| 159 | #endif |
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| 160 | /* end of include file */ |
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