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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6 | * @brief Generic BSP interrupt server implementation. |
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7 | */ |
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8 | |
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9 | /* |
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10 | * Copyright (c) 2009, 2019 embedded brains GmbH. All rights reserved. |
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11 | * |
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12 | * embedded brains GmbH |
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13 | * Dornierstr. 4 |
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14 | * 82178 Puchheim |
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15 | * Germany |
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16 | * <rtems@embedded-brains.de> |
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17 | * |
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18 | * The license and distribution terms for this file may be |
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19 | * found in the file LICENSE in this distribution or at |
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20 | * http://www.rtems.org/license/LICENSE. |
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21 | */ |
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22 | |
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23 | #include <stdlib.h> |
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24 | |
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25 | #include <rtems.h> |
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26 | #include <rtems/chain.h> |
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27 | #include <rtems/score/assert.h> |
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28 | |
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29 | #include <bsp/irq-generic.h> |
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30 | |
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31 | #define BSP_INTERRUPT_SERVER_MANAGEMENT_VECTOR (BSP_INTERRUPT_VECTOR_MAX + 1) |
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32 | |
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33 | typedef struct { |
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34 | RTEMS_INTERRUPT_LOCK_MEMBER(lock); |
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35 | rtems_chain_control entries; |
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36 | rtems_id server; |
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37 | unsigned errors; |
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38 | } bsp_interrupt_server_context; |
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39 | |
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40 | #if defined(RTEMS_SMP) |
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41 | static bsp_interrupt_server_context *bsp_interrupt_server_instances; |
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42 | #else |
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43 | static bsp_interrupt_server_context bsp_interrupt_server_instance; |
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44 | #endif |
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45 | |
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46 | static bsp_interrupt_server_context *bsp_interrupt_server_get_context( |
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47 | uint32_t server_index, |
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48 | rtems_status_code *sc |
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49 | ) |
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50 | { |
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51 | #if defined(RTEMS_SMP) |
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52 | if (bsp_interrupt_server_instances == NULL) { |
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53 | *sc = RTEMS_INCORRECT_STATE; |
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54 | return NULL; |
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55 | } |
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56 | #else |
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57 | if (bsp_interrupt_server_instance.server == RTEMS_ID_NONE) { |
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58 | *sc = RTEMS_INCORRECT_STATE; |
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59 | return NULL; |
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60 | } |
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61 | #endif |
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62 | |
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63 | if (server_index >= rtems_get_processor_count()) { |
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64 | *sc = RTEMS_INVALID_ID; |
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65 | return NULL; |
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66 | } |
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67 | |
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68 | *sc = RTEMS_SUCCESSFUL; |
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69 | #if defined(RTEMS_SMP) |
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70 | return &bsp_interrupt_server_instances[server_index]; |
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71 | #else |
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72 | return &bsp_interrupt_server_instance; |
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73 | #endif |
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74 | } |
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75 | |
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76 | static void bsp_interrupt_server_trigger(void *arg) |
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77 | { |
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78 | rtems_interrupt_lock_context lock_context; |
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79 | rtems_interrupt_server_entry *e = arg; |
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80 | bsp_interrupt_server_context *s = e->server; |
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81 | |
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82 | if (bsp_interrupt_is_valid_vector(e->vector)) { |
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83 | bsp_interrupt_vector_disable(e->vector); |
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84 | } |
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85 | |
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86 | rtems_interrupt_lock_acquire(&s->lock, &lock_context); |
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87 | |
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88 | if (rtems_chain_is_node_off_chain(&e->node)) { |
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89 | rtems_chain_append_unprotected(&s->entries, &e->node); |
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90 | } else { |
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91 | ++s->errors; |
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92 | } |
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93 | |
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94 | rtems_interrupt_lock_release(&s->lock, &lock_context); |
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95 | |
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96 | rtems_event_system_send(s->server, RTEMS_EVENT_SYSTEM_SERVER); |
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97 | } |
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98 | |
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99 | typedef struct { |
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100 | rtems_interrupt_server_entry *entry; |
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101 | rtems_option *options; |
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102 | } bsp_interrupt_server_iterate_entry; |
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103 | |
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104 | static void bsp_interrupt_server_per_handler_routine( |
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105 | void *iterate_arg, |
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106 | const char *info, |
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107 | rtems_option options, |
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108 | rtems_interrupt_handler handler, |
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109 | void *handler_arg |
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110 | ) |
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111 | { |
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112 | if (handler == bsp_interrupt_server_trigger) { |
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113 | bsp_interrupt_server_iterate_entry *ie = iterate_arg; |
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114 | |
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115 | ie->entry = handler_arg; |
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116 | *ie->options = options; |
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117 | } |
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118 | } |
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119 | |
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120 | static rtems_interrupt_server_entry *bsp_interrupt_server_query_entry( |
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121 | rtems_vector_number vector, |
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122 | rtems_option *trigger_options |
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123 | ) |
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124 | { |
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125 | bsp_interrupt_server_iterate_entry ie = { |
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126 | .entry = NULL, |
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127 | .options = trigger_options |
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128 | }; |
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129 | |
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130 | rtems_interrupt_handler_iterate( |
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131 | vector, |
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132 | bsp_interrupt_server_per_handler_routine, |
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133 | &ie |
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134 | ); |
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135 | |
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136 | return ie.entry; |
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137 | } |
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138 | |
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139 | typedef struct { |
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140 | bsp_interrupt_server_context *server; |
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141 | rtems_vector_number vector; |
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142 | rtems_option options; |
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143 | rtems_interrupt_handler handler; |
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144 | void *arg; |
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145 | rtems_id task; |
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146 | rtems_status_code sc; |
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147 | } bsp_interrupt_server_helper_data; |
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148 | |
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149 | static void bsp_interrupt_server_install_helper(void *arg) |
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150 | { |
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151 | bsp_interrupt_server_helper_data *hd = arg; |
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152 | rtems_status_code sc; |
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153 | rtems_interrupt_server_entry *e; |
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154 | rtems_interrupt_server_action *a; |
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155 | rtems_option trigger_options; |
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156 | |
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157 | a = calloc(1, sizeof(*a)); |
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158 | if (a == NULL) { |
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159 | hd->sc = RTEMS_NO_MEMORY; |
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160 | rtems_event_transient_send(hd->task); |
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161 | return; |
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162 | } |
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163 | |
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164 | a->handler = hd->handler; |
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165 | a->arg = hd->arg; |
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166 | |
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167 | bsp_interrupt_lock(); |
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168 | |
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169 | e = bsp_interrupt_server_query_entry(hd->vector, &trigger_options); |
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170 | if (e == NULL) { |
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171 | e = calloc(1, sizeof(*e)); |
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172 | if (e != NULL) { |
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173 | e->server = hd->server; |
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174 | e->vector = hd->vector; |
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175 | e->actions = a; |
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176 | |
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177 | sc = rtems_interrupt_handler_install( |
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178 | hd->vector, |
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179 | "IRQS", |
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180 | hd->options & RTEMS_INTERRUPT_UNIQUE, |
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181 | bsp_interrupt_server_trigger, |
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182 | e |
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183 | ); |
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184 | if (sc != RTEMS_SUCCESSFUL) { |
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185 | free(e); |
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186 | } |
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187 | } else { |
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188 | sc = RTEMS_NO_MEMORY; |
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189 | } |
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190 | #if defined(RTEMS_SMP) |
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191 | } else if (e->server != hd->server) { |
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192 | sc = RTEMS_RESOURCE_IN_USE; |
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193 | #endif |
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194 | } else if ( |
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195 | RTEMS_INTERRUPT_IS_UNIQUE(hd->options) |
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196 | || RTEMS_INTERRUPT_IS_UNIQUE(trigger_options) |
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197 | ) { |
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198 | sc = RTEMS_RESOURCE_IN_USE; |
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199 | } else { |
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200 | rtems_interrupt_server_action **link = &e->actions; |
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201 | rtems_interrupt_server_action *c; |
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202 | |
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203 | sc = RTEMS_SUCCESSFUL; |
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204 | |
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205 | while ((c = *link) != NULL) { |
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206 | if (c->handler == hd->handler && c->arg == hd->arg) { |
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207 | sc = RTEMS_TOO_MANY; |
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208 | break; |
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209 | } |
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210 | |
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211 | link = &c->next; |
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212 | } |
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213 | |
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214 | if (sc == RTEMS_SUCCESSFUL) { |
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215 | *link = a; |
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216 | } |
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217 | } |
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218 | |
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219 | bsp_interrupt_unlock(); |
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220 | |
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221 | if (sc != RTEMS_SUCCESSFUL) { |
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222 | free(a); |
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223 | } |
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224 | |
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225 | hd->sc = sc; |
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226 | rtems_event_transient_send(hd->task); |
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227 | } |
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228 | |
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229 | static void bsp_interrupt_server_remove_helper(void *arg) |
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230 | { |
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231 | bsp_interrupt_server_helper_data *hd = arg; |
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232 | rtems_status_code sc; |
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233 | rtems_interrupt_server_entry *e; |
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234 | rtems_option trigger_options; |
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235 | |
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236 | bsp_interrupt_lock(); |
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237 | |
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238 | e = bsp_interrupt_server_query_entry(hd->vector, &trigger_options); |
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239 | if (e != NULL) { |
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240 | rtems_interrupt_server_action **link = &e->actions; |
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241 | rtems_interrupt_server_action *c; |
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242 | |
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243 | while ((c = *link) != NULL) { |
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244 | if (c->handler == hd->handler && c->arg == hd->arg) { |
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245 | break; |
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246 | } |
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247 | |
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248 | link = &c->next; |
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249 | } |
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250 | |
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251 | if (c != NULL) { |
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252 | bool remove_last = e->actions->next == NULL; |
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253 | |
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254 | if (remove_last) { |
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255 | rtems_interrupt_handler_remove( |
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256 | hd->vector, |
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257 | bsp_interrupt_server_trigger, |
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258 | e |
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259 | ); |
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260 | } |
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261 | |
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262 | *link = c->next; |
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263 | free(c); |
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264 | |
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265 | if (remove_last) { |
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266 | free(e); |
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267 | } |
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268 | |
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269 | sc = RTEMS_SUCCESSFUL; |
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270 | } else { |
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271 | sc = RTEMS_UNSATISFIED; |
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272 | } |
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273 | } else { |
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274 | sc = RTEMS_INVALID_ID; |
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275 | } |
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276 | |
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277 | bsp_interrupt_unlock(); |
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278 | |
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279 | hd->sc = sc; |
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280 | rtems_event_transient_send(hd->task); |
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281 | } |
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282 | |
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283 | static rtems_status_code bsp_interrupt_server_call_helper( |
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284 | bsp_interrupt_server_context *s, |
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285 | rtems_vector_number vector, |
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286 | rtems_option options, |
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287 | rtems_interrupt_handler handler, |
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288 | void *arg, |
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289 | void (*helper)(void *) |
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290 | ) |
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291 | { |
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292 | bsp_interrupt_server_helper_data hd = { |
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293 | .server = s, |
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294 | .vector = vector, |
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295 | .options = options, |
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296 | .handler = handler, |
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297 | .arg = arg, |
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298 | .task = rtems_task_self() |
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299 | }; |
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300 | rtems_interrupt_server_action a = { |
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301 | .handler = helper, |
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302 | .arg = &hd |
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303 | }; |
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304 | rtems_interrupt_server_entry e = { |
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305 | .server = s, |
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306 | .vector = BSP_INTERRUPT_SERVER_MANAGEMENT_VECTOR, |
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307 | .actions = &a |
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308 | }; |
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309 | |
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310 | bsp_interrupt_server_trigger(&e); |
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311 | rtems_event_transient_receive(RTEMS_WAIT, RTEMS_NO_TIMEOUT); |
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312 | |
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313 | return hd.sc; |
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314 | } |
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315 | |
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316 | static rtems_interrupt_server_entry *bsp_interrupt_server_get_entry( |
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317 | bsp_interrupt_server_context *s |
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318 | ) |
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319 | { |
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320 | rtems_interrupt_lock_context lock_context; |
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321 | rtems_interrupt_server_entry *e; |
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322 | |
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323 | rtems_interrupt_lock_acquire(&s->lock, &lock_context); |
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324 | |
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325 | if (!rtems_chain_is_empty(&s->entries)) { |
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326 | e = (rtems_interrupt_server_entry *) |
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327 | rtems_chain_get_first_unprotected(&s->entries); |
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328 | rtems_chain_set_off_chain(&e->node); |
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329 | } else { |
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330 | e = NULL; |
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331 | } |
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332 | |
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333 | rtems_interrupt_lock_release(&s->lock, &lock_context); |
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334 | |
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335 | return e; |
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336 | } |
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337 | |
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338 | static void bsp_interrupt_server_task(rtems_task_argument arg) |
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339 | { |
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340 | bsp_interrupt_server_context *s = (bsp_interrupt_server_context *) arg; |
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341 | |
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342 | while (true) { |
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343 | rtems_event_set events; |
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344 | rtems_interrupt_server_entry *e; |
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345 | |
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346 | rtems_event_system_receive( |
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347 | RTEMS_EVENT_SYSTEM_SERVER, |
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348 | RTEMS_EVENT_ALL | RTEMS_WAIT, |
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349 | RTEMS_NO_TIMEOUT, |
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350 | &events |
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351 | ); |
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352 | |
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353 | while ((e = bsp_interrupt_server_get_entry(s)) != NULL) { |
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354 | rtems_interrupt_server_action *action = e->actions; |
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355 | rtems_vector_number vector = e->vector; |
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356 | |
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357 | do { |
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358 | rtems_interrupt_server_action *current = action; |
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359 | action = action->next; |
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360 | (*current->handler)(current->arg); |
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361 | } while (action != NULL); |
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362 | |
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363 | if (bsp_interrupt_is_valid_vector(vector)) { |
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364 | bsp_interrupt_vector_enable(vector); |
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365 | } |
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366 | } |
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367 | } |
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368 | } |
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369 | |
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370 | rtems_status_code rtems_interrupt_server_handler_install( |
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371 | uint32_t server_index, |
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372 | rtems_vector_number vector, |
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373 | const char *info, |
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374 | rtems_option options, |
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375 | rtems_interrupt_handler handler, |
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376 | void *arg |
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377 | ) |
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378 | { |
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379 | rtems_status_code sc; |
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380 | bsp_interrupt_server_context *s; |
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381 | |
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382 | s = bsp_interrupt_server_get_context(server_index, &sc); |
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383 | if (s == NULL) { |
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384 | return sc; |
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385 | } |
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386 | |
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387 | return bsp_interrupt_server_call_helper( |
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388 | s, |
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389 | vector, |
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390 | options, |
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391 | handler, |
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392 | arg, |
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393 | bsp_interrupt_server_install_helper |
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394 | ); |
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395 | } |
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396 | |
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397 | rtems_status_code rtems_interrupt_server_handler_remove( |
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398 | uint32_t server_index, |
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399 | rtems_vector_number vector, |
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400 | rtems_interrupt_handler handler, |
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401 | void *arg |
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402 | ) |
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403 | { |
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404 | rtems_status_code sc; |
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405 | bsp_interrupt_server_context *s; |
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406 | |
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407 | s = bsp_interrupt_server_get_context(server_index, &sc); |
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408 | if (s == NULL) { |
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409 | return sc; |
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410 | } |
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411 | |
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412 | return bsp_interrupt_server_call_helper( |
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413 | s, |
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414 | vector, |
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415 | 0, |
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416 | handler, |
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417 | arg, |
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418 | bsp_interrupt_server_remove_helper |
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419 | ); |
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420 | } |
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421 | |
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422 | typedef struct { |
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423 | rtems_interrupt_per_handler_routine routine; |
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424 | void *arg; |
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425 | } bsp_interrupt_server_handler_iterate_helper_data; |
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426 | |
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427 | static void bsp_interrupt_server_handler_iterate_helper(void *arg) |
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428 | { |
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429 | bsp_interrupt_server_helper_data *hd = arg; |
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430 | bsp_interrupt_server_handler_iterate_helper_data *hihd = hd->arg; |
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431 | rtems_status_code sc; |
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432 | rtems_interrupt_server_entry *e; |
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433 | rtems_option trigger_options; |
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434 | |
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435 | bsp_interrupt_lock(); |
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436 | |
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437 | e = bsp_interrupt_server_query_entry(hd->vector, &trigger_options); |
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438 | if (e != NULL) { |
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439 | rtems_interrupt_server_action **link = &e->actions; |
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440 | rtems_interrupt_server_action *c; |
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441 | |
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442 | while ((c = *link) != NULL) { |
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443 | (*hihd->routine)(hihd->arg, NULL, trigger_options, c->handler, c->arg); |
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444 | link = &c->next; |
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445 | } |
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446 | |
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447 | sc = RTEMS_SUCCESSFUL; |
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448 | } else { |
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449 | sc = RTEMS_UNSATISFIED; |
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450 | } |
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451 | |
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452 | bsp_interrupt_unlock(); |
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453 | |
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454 | hd->sc = sc; |
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455 | rtems_event_transient_send(hd->task); |
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456 | } |
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457 | |
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458 | rtems_status_code rtems_interrupt_server_handler_iterate( |
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459 | uint32_t server_index, |
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460 | rtems_vector_number vector, |
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461 | rtems_interrupt_per_handler_routine routine, |
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462 | void *arg |
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463 | ) |
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464 | { |
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465 | rtems_status_code sc; |
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466 | bsp_interrupt_server_handler_iterate_helper_data hihd; |
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467 | bsp_interrupt_server_context *s; |
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468 | |
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469 | s = bsp_interrupt_server_get_context(server_index, &sc); |
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470 | if (s == NULL) { |
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471 | return sc; |
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472 | } |
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473 | |
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474 | if (!bsp_interrupt_is_valid_vector(vector)) { |
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475 | return RTEMS_INVALID_ID; |
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476 | } |
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477 | |
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478 | hihd.routine = routine; |
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479 | hihd.arg = arg; |
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480 | return bsp_interrupt_server_call_helper( |
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481 | s, |
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482 | vector, |
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483 | 0, |
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484 | NULL, |
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485 | &hihd, |
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486 | bsp_interrupt_server_handler_iterate_helper |
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487 | ); |
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488 | } |
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489 | |
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490 | rtems_status_code rtems_interrupt_server_initialize( |
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491 | rtems_task_priority priority, |
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492 | size_t stack_size, |
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493 | rtems_mode modes, |
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494 | rtems_attribute attributes, |
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495 | uint32_t *server_count |
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496 | ) |
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497 | { |
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498 | uint32_t cpu_index; |
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499 | uint32_t cpu_count; |
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500 | uint32_t dummy; |
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501 | bsp_interrupt_server_context *instances; |
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502 | |
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503 | if (server_count == NULL) { |
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504 | server_count = &dummy; |
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505 | } |
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506 | |
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507 | cpu_count = rtems_get_processor_count(); |
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508 | |
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509 | #if defined(RTEMS_SMP) |
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510 | instances = calloc(cpu_count, sizeof(*instances)); |
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511 | if (instances == NULL) { |
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512 | return RTEMS_NO_MEMORY; |
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513 | } |
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514 | #else |
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515 | instances = &bsp_interrupt_server_instance; |
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516 | #endif |
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517 | |
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518 | for (cpu_index = 0; cpu_index < cpu_count; ++cpu_index) { |
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519 | bsp_interrupt_server_context *s = &instances[cpu_index]; |
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520 | rtems_status_code sc; |
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521 | #if defined(RTEMS_SMP) |
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522 | rtems_id scheduler; |
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523 | cpu_set_t cpu; |
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524 | #endif |
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525 | |
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526 | rtems_interrupt_lock_initialize(&s->lock, "Interrupt Server"); |
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527 | rtems_chain_initialize_empty(&s->entries); |
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528 | |
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529 | sc = rtems_task_create( |
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530 | rtems_build_name('I', 'R', 'Q', 'S'), |
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531 | priority, |
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532 | stack_size, |
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533 | modes, |
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534 | attributes, |
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535 | &s->server |
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536 | ); |
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537 | if (sc != RTEMS_SUCCESSFUL) { |
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538 | *server_count = cpu_index; |
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539 | |
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540 | #if defined(RTEMS_SMP) |
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541 | if (cpu_index > 0) { |
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542 | return RTEMS_SUCCESSFUL; |
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543 | } |
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544 | |
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545 | free(instances); |
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546 | #endif |
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547 | |
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548 | return RTEMS_TOO_MANY; |
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549 | } |
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550 | |
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551 | #if defined(RTEMS_SMP) |
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552 | sc = rtems_scheduler_ident_by_processor(cpu_index, &scheduler); |
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553 | if (sc != RTEMS_SUCCESSFUL) { |
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554 | /* Do not start an interrupt server on a processor without a scheduler */ |
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555 | continue; |
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556 | } |
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557 | |
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558 | sc = rtems_task_set_scheduler(s->server, scheduler, priority); |
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559 | _Assert(sc == RTEMS_SUCCESSFUL); |
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560 | |
---|
561 | /* Set the task to processor affinity on a best-effort basis */ |
---|
562 | CPU_ZERO(&cpu); |
---|
563 | CPU_SET(cpu_index, &cpu); |
---|
564 | (void) rtems_task_set_affinity(s->server, sizeof(cpu), &cpu); |
---|
565 | #endif |
---|
566 | |
---|
567 | sc = rtems_task_start( |
---|
568 | s->server, |
---|
569 | bsp_interrupt_server_task, |
---|
570 | (rtems_task_argument) s |
---|
571 | ); |
---|
572 | _Assert(sc == RTEMS_SUCCESSFUL); |
---|
573 | } |
---|
574 | |
---|
575 | #if defined(RTEMS_SMP) |
---|
576 | bsp_interrupt_server_instances = instances; |
---|
577 | #endif |
---|
578 | *server_count = cpu_index; |
---|
579 | |
---|
580 | return RTEMS_SUCCESSFUL; |
---|
581 | } |
---|
582 | |
---|
583 | static void bsp_interrupt_server_entry_initialize( |
---|
584 | rtems_interrupt_server_entry *entry, |
---|
585 | bsp_interrupt_server_context *s |
---|
586 | ) |
---|
587 | { |
---|
588 | rtems_chain_set_off_chain(&entry->node); |
---|
589 | entry->server = s; |
---|
590 | entry->vector = BSP_INTERRUPT_SERVER_MANAGEMENT_VECTOR; |
---|
591 | entry->actions = NULL; |
---|
592 | } |
---|
593 | |
---|
594 | static void bsp_interrupt_server_action_prepend( |
---|
595 | rtems_interrupt_server_entry *entry, |
---|
596 | rtems_interrupt_server_action *action, |
---|
597 | rtems_interrupt_handler handler, |
---|
598 | void *arg |
---|
599 | ) |
---|
600 | { |
---|
601 | action->handler = handler; |
---|
602 | action->arg = arg; |
---|
603 | action->next = entry->actions; |
---|
604 | entry->actions = action; |
---|
605 | } |
---|
606 | |
---|
607 | rtems_status_code rtems_interrupt_server_entry_initialize( |
---|
608 | uint32_t server_index, |
---|
609 | rtems_interrupt_server_entry *entry |
---|
610 | ) |
---|
611 | { |
---|
612 | rtems_status_code sc; |
---|
613 | bsp_interrupt_server_context *s; |
---|
614 | |
---|
615 | s = bsp_interrupt_server_get_context(server_index, &sc); |
---|
616 | if (s == NULL) { |
---|
617 | return sc; |
---|
618 | } |
---|
619 | |
---|
620 | bsp_interrupt_server_entry_initialize(entry, s); |
---|
621 | return RTEMS_SUCCESSFUL; |
---|
622 | } |
---|
623 | |
---|
624 | void rtems_interrupt_server_action_prepend( |
---|
625 | rtems_interrupt_server_entry *entry, |
---|
626 | rtems_interrupt_server_action *action, |
---|
627 | rtems_interrupt_handler handler, |
---|
628 | void *arg |
---|
629 | ) |
---|
630 | { |
---|
631 | bsp_interrupt_server_action_prepend(entry, action, handler, arg); |
---|
632 | } |
---|
633 | |
---|
634 | void rtems_interrupt_server_entry_submit( |
---|
635 | rtems_interrupt_server_entry *entry |
---|
636 | ) |
---|
637 | { |
---|
638 | bsp_interrupt_server_trigger(entry); |
---|
639 | } |
---|
640 | |
---|
641 | static void bsp_interrupt_server_entry_synchronize_helper(void *arg) |
---|
642 | { |
---|
643 | bsp_interrupt_server_helper_data *hd = arg; |
---|
644 | |
---|
645 | rtems_event_transient_send(hd->task); |
---|
646 | } |
---|
647 | |
---|
648 | void rtems_interrupt_server_entry_destroy( |
---|
649 | rtems_interrupt_server_entry *entry |
---|
650 | ) |
---|
651 | { |
---|
652 | bsp_interrupt_server_context *s; |
---|
653 | rtems_interrupt_lock_context lock_context; |
---|
654 | |
---|
655 | s = entry->server; |
---|
656 | rtems_interrupt_lock_acquire(&s->lock, &lock_context); |
---|
657 | |
---|
658 | if (!rtems_chain_is_node_off_chain(&entry->node)) { |
---|
659 | rtems_chain_extract_unprotected(&entry->node); |
---|
660 | rtems_chain_set_off_chain(&entry->node); |
---|
661 | } |
---|
662 | |
---|
663 | rtems_interrupt_lock_release(&s->lock, &lock_context); |
---|
664 | |
---|
665 | bsp_interrupt_server_call_helper( |
---|
666 | s, |
---|
667 | BSP_INTERRUPT_SERVER_MANAGEMENT_VECTOR, |
---|
668 | 0, |
---|
669 | NULL, |
---|
670 | NULL, |
---|
671 | bsp_interrupt_server_entry_synchronize_helper |
---|
672 | ); |
---|
673 | } |
---|
674 | |
---|
675 | rtems_status_code rtems_interrupt_server_request_initialize( |
---|
676 | uint32_t server_index, |
---|
677 | rtems_interrupt_server_request *request, |
---|
678 | rtems_interrupt_handler handler, |
---|
679 | void *arg |
---|
680 | ) |
---|
681 | { |
---|
682 | rtems_status_code sc; |
---|
683 | bsp_interrupt_server_context *s; |
---|
684 | |
---|
685 | s = bsp_interrupt_server_get_context(server_index, &sc); |
---|
686 | if (s == NULL) { |
---|
687 | return sc; |
---|
688 | } |
---|
689 | |
---|
690 | bsp_interrupt_server_entry_initialize(&request->entry, s); |
---|
691 | bsp_interrupt_server_action_prepend( |
---|
692 | &request->entry, |
---|
693 | &request->action, |
---|
694 | handler, |
---|
695 | arg |
---|
696 | ); |
---|
697 | return RTEMS_SUCCESSFUL; |
---|
698 | } |
---|
699 | |
---|
700 | static void bsp_interrupt_server_handler_move_helper(void *arg) |
---|
701 | { |
---|
702 | bsp_interrupt_server_helper_data *hd = arg; |
---|
703 | bsp_interrupt_server_handler_iterate_helper_data *hihd = hd->arg; |
---|
704 | rtems_interrupt_server_entry *e; |
---|
705 | rtems_option trigger_options; |
---|
706 | |
---|
707 | bsp_interrupt_lock(); |
---|
708 | |
---|
709 | e = bsp_interrupt_server_query_entry(hd->vector, &trigger_options); |
---|
710 | if (e != NULL) { |
---|
711 | rtems_interrupt_lock_context lock_context; |
---|
712 | bsp_interrupt_server_context *src = e->server; |
---|
713 | bsp_interrupt_server_context *dst = hihd->arg; |
---|
714 | bool pending; |
---|
715 | |
---|
716 | /* The source server is only used in SMP configurations for the lock */ |
---|
717 | (void) src; |
---|
718 | |
---|
719 | rtems_interrupt_lock_acquire(&src->lock, &lock_context); |
---|
720 | |
---|
721 | pending = !rtems_chain_is_node_off_chain(&e->node); |
---|
722 | if (pending) { |
---|
723 | rtems_chain_extract_unprotected(&e->node); |
---|
724 | rtems_chain_set_off_chain(&e->node); |
---|
725 | } |
---|
726 | |
---|
727 | rtems_interrupt_lock_release(&src->lock, &lock_context); |
---|
728 | |
---|
729 | e->server = dst; |
---|
730 | |
---|
731 | if (pending) { |
---|
732 | bsp_interrupt_server_trigger(e); |
---|
733 | } |
---|
734 | } |
---|
735 | |
---|
736 | bsp_interrupt_unlock(); |
---|
737 | |
---|
738 | rtems_event_transient_send(hd->task); |
---|
739 | } |
---|
740 | |
---|
741 | rtems_status_code rtems_interrupt_server_move( |
---|
742 | uint32_t source_server_index, |
---|
743 | rtems_vector_number vector, |
---|
744 | uint32_t destination_server_index |
---|
745 | ) |
---|
746 | { |
---|
747 | rtems_status_code sc; |
---|
748 | bsp_interrupt_server_context *src; |
---|
749 | bsp_interrupt_server_context *dst; |
---|
750 | bsp_interrupt_server_handler_iterate_helper_data hihd; |
---|
751 | |
---|
752 | src = bsp_interrupt_server_get_context(source_server_index, &sc); |
---|
753 | if (src == NULL) { |
---|
754 | return sc; |
---|
755 | } |
---|
756 | |
---|
757 | dst = bsp_interrupt_server_get_context(destination_server_index, &sc); |
---|
758 | if (dst == NULL) { |
---|
759 | return sc; |
---|
760 | } |
---|
761 | |
---|
762 | if (!bsp_interrupt_is_valid_vector(vector)) { |
---|
763 | return RTEMS_INVALID_ID; |
---|
764 | } |
---|
765 | |
---|
766 | hihd.arg = dst; |
---|
767 | bsp_interrupt_server_call_helper( |
---|
768 | src, |
---|
769 | vector, |
---|
770 | 0, |
---|
771 | NULL, |
---|
772 | &hihd, |
---|
773 | bsp_interrupt_server_handler_move_helper |
---|
774 | ); |
---|
775 | return RTEMS_SUCCESSFUL; |
---|
776 | } |
---|
777 | |
---|
778 | static void bsp_interrupt_server_entry_suspend_helper(void *arg) |
---|
779 | { |
---|
780 | bsp_interrupt_server_helper_data *hd = arg; |
---|
781 | rtems_event_set events; |
---|
782 | |
---|
783 | rtems_event_transient_send(hd->task); |
---|
784 | rtems_event_system_receive( |
---|
785 | RTEMS_EVENT_SYSTEM_SERVER_RESUME, |
---|
786 | RTEMS_WAIT, |
---|
787 | RTEMS_NO_TIMEOUT, |
---|
788 | &events |
---|
789 | ); |
---|
790 | } |
---|
791 | |
---|
792 | rtems_status_code rtems_interrupt_server_suspend(uint32_t server_index) |
---|
793 | { |
---|
794 | rtems_status_code sc; |
---|
795 | bsp_interrupt_server_context *s; |
---|
796 | |
---|
797 | s = bsp_interrupt_server_get_context(server_index, &sc); |
---|
798 | if (s == NULL) { |
---|
799 | return sc; |
---|
800 | } |
---|
801 | |
---|
802 | bsp_interrupt_server_call_helper( |
---|
803 | s, |
---|
804 | BSP_INTERRUPT_SERVER_MANAGEMENT_VECTOR, |
---|
805 | 0, |
---|
806 | NULL, |
---|
807 | NULL, |
---|
808 | bsp_interrupt_server_entry_suspend_helper |
---|
809 | ); |
---|
810 | return RTEMS_SUCCESSFUL; |
---|
811 | } |
---|
812 | |
---|
813 | rtems_status_code rtems_interrupt_server_resume(uint32_t server_index) |
---|
814 | { |
---|
815 | rtems_status_code sc; |
---|
816 | bsp_interrupt_server_context *s; |
---|
817 | |
---|
818 | s = bsp_interrupt_server_get_context(server_index, &sc); |
---|
819 | if (s == NULL) { |
---|
820 | return sc; |
---|
821 | } |
---|
822 | |
---|
823 | rtems_event_system_send(s->server, RTEMS_EVENT_SYSTEM_SERVER_RESUME); |
---|
824 | bsp_interrupt_server_call_helper( |
---|
825 | s, |
---|
826 | BSP_INTERRUPT_SERVER_MANAGEMENT_VECTOR, |
---|
827 | 0, |
---|
828 | NULL, |
---|
829 | NULL, |
---|
830 | bsp_interrupt_server_entry_synchronize_helper |
---|
831 | ); |
---|
832 | return RTEMS_SUCCESSFUL; |
---|
833 | } |
---|
834 | |
---|
835 | rtems_status_code rtems_interrupt_server_set_affinity( |
---|
836 | uint32_t server_index, |
---|
837 | size_t affinity_size, |
---|
838 | const cpu_set_t *affinity, |
---|
839 | rtems_task_priority priority |
---|
840 | ) |
---|
841 | { |
---|
842 | rtems_status_code sc; |
---|
843 | bsp_interrupt_server_context *s; |
---|
844 | rtems_id scheduler; |
---|
845 | |
---|
846 | s = bsp_interrupt_server_get_context(server_index, &sc); |
---|
847 | if (s == NULL) { |
---|
848 | return sc; |
---|
849 | } |
---|
850 | |
---|
851 | sc = rtems_scheduler_ident_by_processor_set( |
---|
852 | affinity_size, |
---|
853 | affinity, |
---|
854 | &scheduler |
---|
855 | ); |
---|
856 | if (sc != RTEMS_SUCCESSFUL) { |
---|
857 | return sc; |
---|
858 | } |
---|
859 | |
---|
860 | sc = rtems_task_set_scheduler(s->server, scheduler, priority); |
---|
861 | if (sc != RTEMS_SUCCESSFUL) { |
---|
862 | return sc; |
---|
863 | } |
---|
864 | |
---|
865 | return rtems_task_set_affinity(s->server, affinity_size, affinity); |
---|
866 | } |
---|