[780428f] | 1 | /** |
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| 2 | * @file |
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| 3 | * |
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| 4 | * @ingroup bsp_interrupt |
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| 5 | * |
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[8634637] | 6 | * @brief Generic BSP interrupt support implementation. |
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[780428f] | 7 | */ |
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| 8 | |
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| 9 | /* |
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[359e537] | 10 | * Based on concepts of Pavel Pisa, Till Straumann and Eric Valette. |
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[780428f] | 11 | * |
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[dea4bbe3] | 12 | * Copyright (c) 2008, 2018 embedded brains GmbH. |
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[dd8df59] | 13 | * |
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| 14 | * embedded brains GmbH |
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[e0609ac] | 15 | * Dornierstr. 4 |
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[dd8df59] | 16 | * 82178 Puchheim |
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| 17 | * Germany |
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| 18 | * <rtems@embedded-brains.de> |
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[780428f] | 19 | * |
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[8634637] | 20 | * The license and distribution terms for this file may be |
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| 21 | * found in the file LICENSE in this distribution or at |
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[c499856] | 22 | * http://www.rtems.org/license/LICENSE. |
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[780428f] | 23 | */ |
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| 24 | |
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[a9e5e74] | 25 | #include <bsp/irq-generic.h> |
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[33cb8bf] | 26 | #include <bsp/fatal.h> |
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[a9e5e74] | 27 | |
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[8634637] | 28 | #include <stdlib.h> |
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[b3eeac38] | 29 | |
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[e19da87a] | 30 | #include <rtems/score/processormask.h> |
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[dea4bbe3] | 31 | #include <rtems/malloc.h> |
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[780428f] | 32 | |
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| 33 | #ifdef BSP_INTERRUPT_USE_INDEX_TABLE |
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[8634637] | 34 | bsp_interrupt_handler_index_type bsp_interrupt_handler_index_table |
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| 35 | [BSP_INTERRUPT_VECTOR_NUMBER]; |
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| 36 | #endif |
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[780428f] | 37 | |
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[8634637] | 38 | bsp_interrupt_handler_entry bsp_interrupt_handler_table |
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| 39 | [BSP_INTERRUPT_HANDLER_TABLE_SIZE]; |
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[780428f] | 40 | |
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| 41 | /* The last entry indicates if everything is initialized */ |
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[8634637] | 42 | static uint8_t bsp_interrupt_handler_unique_table |
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| 43 | [(BSP_INTERRUPT_HANDLER_TABLE_SIZE + 7 + 1) / 8]; |
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[780428f] | 44 | |
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[60e5832] | 45 | static void bsp_interrupt_handler_empty(void *arg) |
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[780428f] | 46 | { |
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[ec25c6ef] | 47 | rtems_vector_number vector = (rtems_vector_number) (uintptr_t) arg; |
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[60e5832] | 48 | |
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[8634637] | 49 | bsp_interrupt_handler_default(vector); |
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[780428f] | 50 | } |
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| 51 | |
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[e0609ac] | 52 | #ifdef RTEMS_SMP |
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| 53 | static void bsp_interrupt_handler_do_nothing(void *arg) |
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| 54 | { |
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| 55 | (void) arg; |
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| 56 | } |
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| 57 | #endif |
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| 58 | |
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[8634637] | 59 | static inline bool bsp_interrupt_is_handler_unique(rtems_vector_number index) |
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[780428f] | 60 | { |
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[8634637] | 61 | rtems_vector_number i = index / 8; |
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| 62 | rtems_vector_number s = index % 8; |
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| 63 | return (bsp_interrupt_handler_unique_table [i] >> s) & 0x1; |
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| 64 | } |
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| 65 | |
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| 66 | static inline void bsp_interrupt_set_handler_unique( |
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| 67 | rtems_vector_number index, |
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| 68 | bool unique |
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| 69 | ) |
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| 70 | { |
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| 71 | rtems_vector_number i = index / 8; |
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| 72 | rtems_vector_number s = index % 8; |
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| 73 | if (unique) { |
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| 74 | bsp_interrupt_handler_unique_table [i] |= (uint8_t) (0x1U << s); |
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| 75 | } else { |
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| 76 | bsp_interrupt_handler_unique_table [i] &= (uint8_t) ~(0x1U << s); |
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| 77 | } |
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[780428f] | 78 | } |
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| 79 | |
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[f3eaba9a] | 80 | static inline bool bsp_interrupt_is_initialized(void) |
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[780428f] | 81 | { |
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[8634637] | 82 | return bsp_interrupt_is_handler_unique(BSP_INTERRUPT_HANDLER_TABLE_SIZE); |
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[780428f] | 83 | } |
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| 84 | |
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[f3eaba9a] | 85 | static inline void bsp_interrupt_set_initialized(void) |
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[780428f] | 86 | { |
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[8634637] | 87 | bsp_interrupt_set_handler_unique(BSP_INTERRUPT_HANDLER_TABLE_SIZE, true); |
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[780428f] | 88 | } |
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| 89 | |
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[8634637] | 90 | static inline bool bsp_interrupt_is_empty_handler_entry( |
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[956531b] | 91 | const bsp_interrupt_handler_entry *e |
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[8634637] | 92 | ) |
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[780428f] | 93 | { |
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[8634637] | 94 | return e->handler == bsp_interrupt_handler_empty; |
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[780428f] | 95 | } |
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| 96 | |
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[8634637] | 97 | static inline void bsp_interrupt_clear_handler_entry( |
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[6faf789] | 98 | bsp_interrupt_handler_entry *e, |
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| 99 | rtems_vector_number vector |
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[8634637] | 100 | ) |
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[780428f] | 101 | { |
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[8634637] | 102 | e->handler = bsp_interrupt_handler_empty; |
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[e0609ac] | 103 | bsp_interrupt_fence(ATOMIC_ORDER_RELEASE); |
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[ec25c6ef] | 104 | e->arg = (void *) (uintptr_t) vector; |
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[8634637] | 105 | e->info = NULL; |
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| 106 | e->next = NULL; |
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[780428f] | 107 | } |
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| 108 | |
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[8634637] | 109 | static inline bool bsp_interrupt_allocate_handler_index( |
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| 110 | rtems_vector_number vector, |
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| 111 | rtems_vector_number *index |
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| 112 | ) |
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[780428f] | 113 | { |
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[8634637] | 114 | #ifdef BSP_INTERRUPT_USE_INDEX_TABLE |
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| 115 | rtems_vector_number i = 0; |
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| 116 | |
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| 117 | /* The first entry will remain empty */ |
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| 118 | for (i = 1; i < BSP_INTERRUPT_HANDLER_TABLE_SIZE; ++i) { |
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| 119 | const bsp_interrupt_handler_entry *e = &bsp_interrupt_handler_table [i]; |
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| 120 | if (bsp_interrupt_is_empty_handler_entry(e)) { |
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| 121 | *index = i; |
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| 122 | return true; |
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| 123 | } |
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| 124 | } |
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| 125 | |
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| 126 | return false; |
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| 127 | #else |
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[a9859d1] | 128 | *index = bsp_interrupt_handler_index(vector); |
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[8634637] | 129 | return true; |
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| 130 | #endif |
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[780428f] | 131 | } |
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| 132 | |
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[8634637] | 133 | static bsp_interrupt_handler_entry *bsp_interrupt_allocate_handler_entry(void) |
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[780428f] | 134 | { |
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[9a029ce] | 135 | bsp_interrupt_handler_entry *e; |
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| 136 | |
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[8634637] | 137 | #ifdef BSP_INTERRUPT_NO_HEAP_USAGE |
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| 138 | rtems_vector_number index = 0; |
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[9a029ce] | 139 | |
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[8634637] | 140 | if (bsp_interrupt_allocate_handler_index(0, &index)) { |
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[9a029ce] | 141 | e = &bsp_interrupt_handler_table [index]; |
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[8634637] | 142 | } else { |
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[9a029ce] | 143 | e = NULL; |
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[8634637] | 144 | } |
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| 145 | #else |
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[9a029ce] | 146 | e = rtems_malloc(sizeof(*e)); |
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[8634637] | 147 | #endif |
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[9a029ce] | 148 | |
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| 149 | return e; |
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[780428f] | 150 | } |
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| 151 | |
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[8634637] | 152 | static void bsp_interrupt_free_handler_entry(bsp_interrupt_handler_entry *e) |
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[780428f] | 153 | { |
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[8634637] | 154 | #ifdef BSP_INTERRUPT_NO_HEAP_USAGE |
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[6faf789] | 155 | bsp_interrupt_clear_handler_entry(e, 0); |
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[8634637] | 156 | #else |
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| 157 | free(e); |
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| 158 | #endif |
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[780428f] | 159 | } |
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| 160 | |
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[dd8df59] | 161 | void bsp_interrupt_initialize(void) |
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[780428f] | 162 | { |
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[8634637] | 163 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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| 164 | size_t i = 0; |
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| 165 | |
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| 166 | /* Initialize handler table */ |
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| 167 | for (i = 0; i < BSP_INTERRUPT_HANDLER_TABLE_SIZE; ++i) { |
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| 168 | bsp_interrupt_handler_table [i].handler = bsp_interrupt_handler_empty; |
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[60e5832] | 169 | bsp_interrupt_handler_table [i].arg = (void *) i; |
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[8634637] | 170 | } |
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| 171 | |
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| 172 | sc = bsp_interrupt_facility_initialize(); |
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| 173 | if (sc != RTEMS_SUCCESSFUL) { |
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[33cb8bf] | 174 | bsp_fatal(BSP_FATAL_INTERRUPT_INITIALIZATION); |
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[8634637] | 175 | } |
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| 176 | |
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| 177 | bsp_interrupt_set_initialized(); |
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[780428f] | 178 | } |
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| 179 | |
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| 180 | /** |
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| 181 | * @brief Installs an interrupt handler. |
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| 182 | * |
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| 183 | * @ingroup bsp_interrupt |
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| 184 | * |
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| 185 | * @return In addition to the standard status codes this function returns: |
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| 186 | * - If the BSP interrupt support is not initialized RTEMS_INTERNAL_ERROR will |
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| 187 | * be returned. |
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| 188 | * - If not enough memory for a new handler is available RTEMS_NO_MEMORY will |
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| 189 | * be returned |
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| 190 | * |
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| 191 | * @see rtems_interrupt_handler_install() |
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| 192 | */ |
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[8634637] | 193 | static rtems_status_code bsp_interrupt_handler_install( |
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| 194 | rtems_vector_number vector, |
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| 195 | const char *info, |
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| 196 | rtems_option options, |
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| 197 | rtems_interrupt_handler handler, |
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| 198 | void *arg |
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| 199 | ) |
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[780428f] | 200 | { |
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[8634637] | 201 | rtems_interrupt_level level; |
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| 202 | rtems_vector_number index = 0; |
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| 203 | bsp_interrupt_handler_entry *head = NULL; |
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| 204 | bool enable_vector = false; |
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[718124e] | 205 | bool replace = RTEMS_INTERRUPT_IS_REPLACE(options); |
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[8634637] | 206 | |
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| 207 | /* Check parameters and system state */ |
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| 208 | if (!bsp_interrupt_is_initialized()) { |
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| 209 | return RTEMS_INTERNAL_ERROR; |
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| 210 | } else if (!bsp_interrupt_is_valid_vector(vector)) { |
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| 211 | return RTEMS_INVALID_ID; |
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| 212 | } else if (handler == NULL) { |
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| 213 | return RTEMS_INVALID_ADDRESS; |
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| 214 | } else if (rtems_interrupt_is_in_progress()) { |
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| 215 | return RTEMS_CALLED_FROM_ISR; |
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| 216 | } |
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| 217 | |
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| 218 | /* Lock */ |
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[a9e5e74] | 219 | bsp_interrupt_lock(); |
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[8634637] | 220 | |
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| 221 | /* Get handler table index */ |
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| 222 | index = bsp_interrupt_handler_index(vector); |
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| 223 | |
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| 224 | /* Get head entry of the handler list for current vector */ |
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| 225 | head = &bsp_interrupt_handler_table [index]; |
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| 226 | |
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| 227 | if (bsp_interrupt_is_empty_handler_entry(head)) { |
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[718124e] | 228 | if (replace) { |
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| 229 | /* No handler to replace exists */ |
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| 230 | bsp_interrupt_unlock(); |
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| 231 | return RTEMS_UNSATISFIED; |
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| 232 | } |
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| 233 | |
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[8634637] | 234 | /* |
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| 235 | * No real handler installed yet. So allocate a new index in |
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| 236 | * the handler table and fill the entry with life. |
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| 237 | */ |
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| 238 | if (bsp_interrupt_allocate_handler_index(vector, &index)) { |
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[e0609ac] | 239 | bsp_interrupt_disable(level); |
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[8634637] | 240 | bsp_interrupt_handler_table [index].arg = arg; |
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[e0609ac] | 241 | bsp_interrupt_fence(ATOMIC_ORDER_RELEASE); |
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| 242 | bsp_interrupt_handler_table [index].handler = handler; |
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[8634637] | 243 | #ifdef BSP_INTERRUPT_USE_INDEX_TABLE |
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| 244 | bsp_interrupt_handler_index_table [vector] = index; |
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| 245 | #endif |
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[e0609ac] | 246 | bsp_interrupt_enable(level); |
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[8634637] | 247 | bsp_interrupt_handler_table [index].info = info; |
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| 248 | } else { |
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| 249 | /* Handler table is full */ |
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| 250 | bsp_interrupt_unlock(); |
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| 251 | return RTEMS_NO_MEMORY; |
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| 252 | } |
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| 253 | |
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| 254 | /* This is the first handler so enable the vector later */ |
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| 255 | enable_vector = true; |
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| 256 | } else { |
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[718124e] | 257 | bsp_interrupt_handler_entry *current = head; |
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| 258 | bsp_interrupt_handler_entry *tail = NULL; |
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| 259 | bsp_interrupt_handler_entry *match = NULL; |
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| 260 | |
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[8634637] | 261 | /* Ensure that a unique handler remains unique */ |
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| 262 | if ( |
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[718124e] | 263 | !replace |
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| 264 | && (RTEMS_INTERRUPT_IS_UNIQUE(options) |
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| 265 | || bsp_interrupt_is_handler_unique(index)) |
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[8634637] | 266 | ) { |
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| 267 | /* |
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| 268 | * Tried to install a unique handler on a not empty |
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| 269 | * list or there is already a unique handler installed. |
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| 270 | */ |
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| 271 | bsp_interrupt_unlock(); |
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| 272 | return RTEMS_RESOURCE_IN_USE; |
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| 273 | } |
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| 274 | |
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| 275 | /* |
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| 276 | * Search for the list tail and check if the handler is already |
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| 277 | * installed. |
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| 278 | */ |
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| 279 | do { |
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[718124e] | 280 | if ( |
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| 281 | match == NULL |
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| 282 | && (current->handler == handler || replace) |
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| 283 | && current->arg == arg |
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| 284 | ) { |
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[8634637] | 285 | match = current; |
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| 286 | } |
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| 287 | tail = current; |
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| 288 | current = current->next; |
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| 289 | } while (current != NULL); |
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| 290 | |
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[718124e] | 291 | if (replace) { |
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| 292 | /* Ensure that a handler to replace exists */ |
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| 293 | if (match == NULL) { |
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| 294 | bsp_interrupt_unlock(); |
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| 295 | return RTEMS_UNSATISFIED; |
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| 296 | } |
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[8634637] | 297 | |
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[718124e] | 298 | /* Use existing entry */ |
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| 299 | current = match; |
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| 300 | } else { |
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| 301 | /* Ensure the handler is not already installed */ |
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| 302 | if (match != NULL) { |
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| 303 | /* The handler is already installed */ |
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| 304 | bsp_interrupt_unlock(); |
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| 305 | return RTEMS_TOO_MANY; |
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| 306 | } |
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| 307 | |
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| 308 | /* Allocate a new entry */ |
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| 309 | current = bsp_interrupt_allocate_handler_entry(); |
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| 310 | if (current == NULL) { |
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| 311 | /* Not enough memory */ |
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| 312 | bsp_interrupt_unlock(); |
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| 313 | return RTEMS_NO_MEMORY; |
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| 314 | } |
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[8634637] | 315 | } |
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| 316 | |
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[718124e] | 317 | /* Update existing entry or set new entry */ |
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[8634637] | 318 | current->handler = handler; |
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| 319 | current->info = info; |
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| 320 | |
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[718124e] | 321 | if (!replace) { |
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| 322 | /* Set new entry */ |
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| 323 | current->arg = arg; |
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| 324 | current->next = NULL; |
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| 325 | |
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| 326 | /* Link to list tail */ |
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| 327 | bsp_interrupt_disable(level); |
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| 328 | bsp_interrupt_fence(ATOMIC_ORDER_RELEASE); |
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| 329 | tail->next = current; |
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| 330 | bsp_interrupt_enable(level); |
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| 331 | } |
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[8634637] | 332 | } |
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| 333 | |
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| 334 | /* Make the handler unique if necessary */ |
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| 335 | bsp_interrupt_set_handler_unique(index, RTEMS_INTERRUPT_IS_UNIQUE(options)); |
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| 336 | |
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| 337 | /* Enable the vector if necessary */ |
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| 338 | if (enable_vector) { |
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[c6810c8] | 339 | bsp_interrupt_vector_enable(vector); |
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[8634637] | 340 | } |
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| 341 | |
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| 342 | /* Unlock */ |
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[a9e5e74] | 343 | bsp_interrupt_unlock(); |
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[8634637] | 344 | |
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| 345 | return RTEMS_SUCCESSFUL; |
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[780428f] | 346 | } |
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| 347 | |
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| 348 | /** |
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| 349 | * @brief Removes an interrupt handler. |
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| 350 | * |
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| 351 | * @ingroup bsp_interrupt |
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| 352 | * |
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| 353 | * @return In addition to the standard status codes this function returns |
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| 354 | * RTEMS_INTERNAL_ERROR if the BSP interrupt support is not initialized. |
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| 355 | * |
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| 356 | * @see rtems_interrupt_handler_remove(). |
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| 357 | */ |
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[8634637] | 358 | static rtems_status_code bsp_interrupt_handler_remove( |
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| 359 | rtems_vector_number vector, |
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| 360 | rtems_interrupt_handler handler, |
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| 361 | void *arg |
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| 362 | ) |
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[780428f] | 363 | { |
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[8634637] | 364 | rtems_interrupt_level level; |
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| 365 | rtems_vector_number index = 0; |
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| 366 | bsp_interrupt_handler_entry *head = NULL; |
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| 367 | bsp_interrupt_handler_entry *current = NULL; |
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| 368 | bsp_interrupt_handler_entry *previous = NULL; |
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| 369 | bsp_interrupt_handler_entry *match = NULL; |
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| 370 | |
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| 371 | /* Check parameters and system state */ |
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| 372 | if (!bsp_interrupt_is_initialized()) { |
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| 373 | return RTEMS_INTERNAL_ERROR; |
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| 374 | } else if (!bsp_interrupt_is_valid_vector(vector)) { |
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| 375 | return RTEMS_INVALID_ID; |
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| 376 | } else if (handler == NULL) { |
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| 377 | return RTEMS_INVALID_ADDRESS; |
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| 378 | } else if (rtems_interrupt_is_in_progress()) { |
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| 379 | return RTEMS_CALLED_FROM_ISR; |
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| 380 | } |
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| 381 | |
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| 382 | /* Lock */ |
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[a9e5e74] | 383 | bsp_interrupt_lock(); |
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[8634637] | 384 | |
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| 385 | /* Get handler table index */ |
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| 386 | index = bsp_interrupt_handler_index(vector); |
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| 387 | |
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| 388 | /* Get head entry of the handler list for current vector */ |
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| 389 | head = &bsp_interrupt_handler_table [index]; |
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| 390 | |
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| 391 | /* Search for a matching entry */ |
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| 392 | current = head; |
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| 393 | do { |
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| 394 | if (current->handler == handler && current->arg == arg) { |
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| 395 | match = current; |
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| 396 | break; |
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| 397 | } |
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| 398 | previous = current; |
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| 399 | current = current->next; |
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| 400 | } while (current != NULL); |
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| 401 | |
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| 402 | /* Remove the matching entry */ |
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| 403 | if (match != NULL) { |
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| 404 | if (match->next != NULL) { |
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| 405 | /* |
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| 406 | * The match has a successor. A successor is always |
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| 407 | * allocated. So replace the match with its successor |
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| 408 | * and free the successor entry. |
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| 409 | */ |
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| 410 | current = match->next; |
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| 411 | |
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[e0609ac] | 412 | bsp_interrupt_disable(level); |
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| 413 | #ifdef RTEMS_SMP |
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| 414 | match->handler = bsp_interrupt_handler_do_nothing; |
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| 415 | bsp_interrupt_fence(ATOMIC_ORDER_RELEASE); |
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| 416 | #endif |
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| 417 | match->arg = current->arg; |
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| 418 | bsp_interrupt_fence(ATOMIC_ORDER_RELEASE); |
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| 419 | match->handler = current->handler; |
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| 420 | match->info = current->info; |
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| 421 | match->next = current->next; |
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| 422 | bsp_interrupt_enable(level); |
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[8634637] | 423 | |
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| 424 | bsp_interrupt_free_handler_entry(current); |
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| 425 | } else if (match == head) { |
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| 426 | /* |
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| 427 | * The match is the list head and has no successor. |
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| 428 | * The list head is stored in a static table so clear |
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| 429 | * this entry. Since now the list is empty disable the |
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| 430 | * vector. |
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| 431 | */ |
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| 432 | |
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| 433 | /* Disable the vector */ |
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[c6810c8] | 434 | bsp_interrupt_vector_disable(vector); |
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[8634637] | 435 | |
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| 436 | /* Clear entry */ |
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[e0609ac] | 437 | bsp_interrupt_disable(level); |
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[6faf789] | 438 | bsp_interrupt_clear_handler_entry(head, vector); |
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[8634637] | 439 | #ifdef BSP_INTERRUPT_USE_INDEX_TABLE |
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| 440 | bsp_interrupt_handler_index_table [vector] = 0; |
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| 441 | #endif |
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[e0609ac] | 442 | bsp_interrupt_enable(level); |
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[8634637] | 443 | |
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| 444 | /* Allow shared handlers */ |
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| 445 | bsp_interrupt_set_handler_unique(index, false); |
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| 446 | } else { |
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| 447 | /* |
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| 448 | * The match is the list tail and has a predecessor. |
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| 449 | * So terminate the predecessor and free the match. |
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| 450 | */ |
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[e0609ac] | 451 | bsp_interrupt_disable(level); |
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[8634637] | 452 | previous->next = NULL; |
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[e0609ac] | 453 | bsp_interrupt_fence(ATOMIC_ORDER_RELEASE); |
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| 454 | bsp_interrupt_enable(level); |
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[8634637] | 455 | |
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| 456 | bsp_interrupt_free_handler_entry(match); |
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| 457 | } |
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| 458 | } else { |
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| 459 | /* No matching entry found */ |
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| 460 | bsp_interrupt_unlock(); |
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| 461 | return RTEMS_UNSATISFIED; |
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| 462 | } |
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| 463 | |
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| 464 | /* Unlock */ |
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[a9e5e74] | 465 | bsp_interrupt_unlock(); |
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[8634637] | 466 | |
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| 467 | return RTEMS_SUCCESSFUL; |
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[780428f] | 468 | } |
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| 469 | |
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[2e2c640e] | 470 | /** |
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| 471 | * @brief Iterates over all installed interrupt handler of a vector. |
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| 472 | * |
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| 473 | * @ingroup bsp_interrupt |
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| 474 | * |
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| 475 | * @return In addition to the standard status codes this function returns |
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| 476 | * RTEMS_INTERNAL_ERROR if the BSP interrupt support is not initialized. |
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| 477 | * |
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| 478 | * @see rtems_interrupt_handler_iterate(). |
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| 479 | */ |
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[8634637] | 480 | static rtems_status_code bsp_interrupt_handler_iterate( |
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| 481 | rtems_vector_number vector, |
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| 482 | rtems_interrupt_per_handler_routine routine, |
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| 483 | void *arg |
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| 484 | ) |
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[780428f] | 485 | { |
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[8634637] | 486 | bsp_interrupt_handler_entry *current = NULL; |
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| 487 | rtems_option options = 0; |
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| 488 | rtems_vector_number index = 0; |
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| 489 | |
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| 490 | /* Check parameters and system state */ |
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| 491 | if (!bsp_interrupt_is_initialized()) { |
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| 492 | return RTEMS_INTERNAL_ERROR; |
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| 493 | } else if (!bsp_interrupt_is_valid_vector(vector)) { |
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| 494 | return RTEMS_INVALID_ID; |
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| 495 | } else if (rtems_interrupt_is_in_progress()) { |
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| 496 | return RTEMS_CALLED_FROM_ISR; |
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| 497 | } |
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| 498 | |
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| 499 | /* Lock */ |
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[a9e5e74] | 500 | bsp_interrupt_lock(); |
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[8634637] | 501 | |
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| 502 | /* Interate */ |
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| 503 | index = bsp_interrupt_handler_index(vector); |
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| 504 | current = &bsp_interrupt_handler_table [index]; |
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| 505 | if (!bsp_interrupt_is_empty_handler_entry(current)) { |
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| 506 | do { |
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| 507 | options = bsp_interrupt_is_handler_unique(index) ? |
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| 508 | RTEMS_INTERRUPT_UNIQUE : RTEMS_INTERRUPT_SHARED; |
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| 509 | routine(arg, current->info, options, current->handler, current->arg); |
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| 510 | current = current->next; |
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| 511 | } while (current != NULL); |
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| 512 | } |
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| 513 | |
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| 514 | /* Unlock */ |
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[a9e5e74] | 515 | bsp_interrupt_unlock(); |
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[8634637] | 516 | |
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| 517 | return RTEMS_SUCCESSFUL; |
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[780428f] | 518 | } |
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| 519 | |
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[8634637] | 520 | rtems_status_code rtems_interrupt_handler_install( |
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| 521 | rtems_vector_number vector, |
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| 522 | const char *info, |
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| 523 | rtems_option options, |
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| 524 | rtems_interrupt_handler handler, |
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| 525 | void *arg |
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| 526 | ) |
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[780428f] | 527 | { |
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[8634637] | 528 | return bsp_interrupt_handler_install(vector, info, options, handler, arg); |
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[2e2c640e] | 529 | } |
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[780428f] | 530 | |
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[8634637] | 531 | rtems_status_code rtems_interrupt_handler_remove( |
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| 532 | rtems_vector_number vector, |
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| 533 | rtems_interrupt_handler handler, |
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| 534 | void *arg |
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| 535 | ) |
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[2e2c640e] | 536 | { |
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[8634637] | 537 | return bsp_interrupt_handler_remove(vector, handler, arg); |
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[2e2c640e] | 538 | } |
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[780428f] | 539 | |
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[8634637] | 540 | rtems_status_code rtems_interrupt_handler_iterate( |
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| 541 | rtems_vector_number vector, |
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| 542 | rtems_interrupt_per_handler_routine routine, |
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| 543 | void *arg |
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| 544 | ) |
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[2e2c640e] | 545 | { |
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[8634637] | 546 | return bsp_interrupt_handler_iterate(vector, routine, arg); |
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[780428f] | 547 | } |
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[43f18a1] | 548 | |
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| 549 | bool bsp_interrupt_handler_is_empty(rtems_vector_number vector) |
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| 550 | { |
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| 551 | rtems_vector_number index = 0; |
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| 552 | bsp_interrupt_handler_entry *head = NULL; |
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| 553 | bool empty; |
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| 554 | |
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| 555 | /* For use in interrupts so no lock. */ |
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| 556 | |
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| 557 | /* Get handler table index */ |
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| 558 | index = bsp_interrupt_handler_index(vector); |
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| 559 | |
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| 560 | /* Get head entry of the handler list for the vector */ |
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| 561 | head = &bsp_interrupt_handler_table [index]; |
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| 562 | |
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| 563 | empty = bsp_interrupt_is_empty_handler_entry(head); |
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| 564 | |
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| 565 | return empty; |
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| 566 | } |
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[af207fa9] | 567 | |
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| 568 | rtems_status_code rtems_interrupt_set_affinity( |
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| 569 | rtems_vector_number vector, |
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| 570 | size_t affinity_size, |
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| 571 | const cpu_set_t *affinity |
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| 572 | ) |
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| 573 | { |
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| 574 | Processor_mask set; |
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| 575 | Processor_mask_Copy_status status; |
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| 576 | |
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| 577 | if (!bsp_interrupt_is_valid_vector(vector)) { |
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| 578 | return RTEMS_INVALID_ID; |
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| 579 | } |
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| 580 | |
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| 581 | status = _Processor_mask_From_cpu_set_t(&set, affinity_size, affinity); |
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| 582 | if (status != PROCESSOR_MASK_COPY_LOSSLESS) { |
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| 583 | return RTEMS_INVALID_SIZE; |
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| 584 | } |
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| 585 | |
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| 586 | #if defined(RTEMS_SMP) |
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| 587 | bsp_interrupt_set_affinity(vector, &set); |
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| 588 | #endif |
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| 589 | return RTEMS_SUCCESSFUL; |
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| 590 | } |
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| 591 | |
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| 592 | rtems_status_code rtems_interrupt_get_affinity( |
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| 593 | rtems_vector_number vector, |
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| 594 | size_t affinity_size, |
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| 595 | cpu_set_t *affinity |
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| 596 | ) |
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| 597 | { |
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| 598 | Processor_mask set; |
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| 599 | Processor_mask_Copy_status status; |
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| 600 | |
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| 601 | if (!bsp_interrupt_is_valid_vector(vector)) { |
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| 602 | return RTEMS_INVALID_ID; |
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| 603 | } |
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| 604 | |
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| 605 | #if defined(RTEMS_SMP) |
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| 606 | bsp_interrupt_get_affinity(vector, &set); |
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| 607 | #else |
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| 608 | _Processor_mask_From_index(&set, 0); |
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| 609 | #endif |
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| 610 | |
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| 611 | status = _Processor_mask_To_cpu_set_t(&set, affinity_size, affinity); |
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| 612 | if (status != PROCESSOR_MASK_COPY_LOSSLESS) { |
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| 613 | return RTEMS_INVALID_SIZE; |
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| 614 | } |
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| 615 | |
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| 616 | return RTEMS_SUCCESSFUL; |
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| 617 | } |
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