1 | /* SPDX-License-Identifier: BSD-2-Clause */ |
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2 | |
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3 | /** |
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4 | * @file |
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5 | * |
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6 | * @ingroup RTEMSImplClassicIntr |
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7 | * |
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8 | * @brief This source file contains the interrupt server implementation. |
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9 | */ |
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10 | |
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11 | /* |
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12 | * Copyright (C) 2009, 2020 embedded brains GmbH & Co. KG |
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13 | * |
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14 | * Redistribution and use in source and binary forms, with or without |
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15 | * modification, are permitted provided that the following conditions |
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16 | * are met: |
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17 | * 1. Redistributions of source code must retain the above copyright |
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18 | * notice, this list of conditions and the following disclaimer. |
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19 | * 2. Redistributions in binary form must reproduce the above copyright |
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20 | * notice, this list of conditions and the following disclaimer in the |
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21 | * documentation and/or other materials provided with the distribution. |
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22 | * |
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23 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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24 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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27 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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30 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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31 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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32 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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33 | * POSSIBILITY OF SUCH DAMAGE. |
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34 | */ |
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35 | |
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36 | #include <stdlib.h> |
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37 | #include <string.h> |
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38 | |
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39 | #include <rtems.h> |
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40 | #include <rtems/chain.h> |
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41 | #include <rtems/score/assert.h> |
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42 | |
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43 | #include <bsp/irq-generic.h> |
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44 | |
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45 | #define BSP_INTERRUPT_SERVER_MANAGEMENT_VECTOR BSP_INTERRUPT_VECTOR_COUNT |
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46 | |
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47 | static rtems_interrupt_server_control bsp_interrupt_server_default; |
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48 | |
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49 | static rtems_chain_control bsp_interrupt_server_chain = |
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50 | RTEMS_CHAIN_INITIALIZER_EMPTY(bsp_interrupt_server_chain); |
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51 | |
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52 | static rtems_interrupt_server_control *bsp_interrupt_server_get_context( |
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53 | uint32_t server_index, |
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54 | rtems_status_code *sc |
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55 | ) |
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56 | { |
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57 | rtems_chain_node *node; |
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58 | |
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59 | bsp_interrupt_lock(); |
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60 | node = rtems_chain_first(&bsp_interrupt_server_chain); |
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61 | |
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62 | while (node != rtems_chain_tail(&bsp_interrupt_server_chain)) { |
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63 | rtems_interrupt_server_control *s; |
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64 | |
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65 | s = RTEMS_CONTAINER_OF(node, rtems_interrupt_server_control, node); |
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66 | if (s->index == server_index) { |
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67 | bsp_interrupt_unlock(); |
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68 | return s; |
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69 | } |
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70 | |
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71 | node = rtems_chain_next(node); |
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72 | } |
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73 | |
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74 | bsp_interrupt_unlock(); |
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75 | *sc = RTEMS_INVALID_ID; |
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76 | return NULL; |
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77 | } |
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78 | |
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79 | static void bsp_interrupt_server_trigger(void *arg) |
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80 | { |
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81 | rtems_interrupt_lock_context lock_context; |
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82 | rtems_interrupt_server_entry *e = arg; |
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83 | rtems_interrupt_server_control *s = e->server; |
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84 | |
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85 | if (bsp_interrupt_is_valid_vector(e->vector)) { |
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86 | bsp_interrupt_vector_disable(e->vector); |
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87 | } |
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88 | |
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89 | rtems_interrupt_lock_acquire(&s->lock, &lock_context); |
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90 | |
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91 | if (rtems_chain_is_node_off_chain(&e->node)) { |
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92 | rtems_chain_append_unprotected(&s->entries, &e->node); |
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93 | } else { |
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94 | ++s->errors; |
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95 | } |
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96 | |
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97 | rtems_interrupt_lock_release(&s->lock, &lock_context); |
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98 | |
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99 | rtems_event_system_send(s->server, RTEMS_EVENT_SYSTEM_SERVER); |
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100 | } |
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101 | |
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102 | typedef struct { |
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103 | rtems_interrupt_server_entry *entry; |
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104 | rtems_option *options; |
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105 | } bsp_interrupt_server_iterate_entry; |
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106 | |
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107 | static void bsp_interrupt_server_per_handler_routine( |
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108 | void *iterate_arg, |
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109 | const char *info, |
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110 | rtems_option options, |
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111 | rtems_interrupt_handler handler, |
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112 | void *handler_arg |
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113 | ) |
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114 | { |
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115 | if (handler == bsp_interrupt_server_trigger) { |
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116 | bsp_interrupt_server_iterate_entry *ie = iterate_arg; |
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117 | |
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118 | ie->entry = handler_arg; |
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119 | *ie->options = options; |
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120 | } |
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121 | } |
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122 | |
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123 | static rtems_interrupt_server_entry *bsp_interrupt_server_query_entry( |
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124 | rtems_vector_number vector, |
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125 | rtems_option *trigger_options |
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126 | ) |
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127 | { |
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128 | bsp_interrupt_server_iterate_entry ie = { |
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129 | .entry = NULL, |
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130 | .options = trigger_options |
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131 | }; |
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132 | |
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133 | rtems_interrupt_handler_iterate( |
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134 | vector, |
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135 | bsp_interrupt_server_per_handler_routine, |
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136 | &ie |
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137 | ); |
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138 | |
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139 | return ie.entry; |
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140 | } |
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141 | |
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142 | typedef struct { |
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143 | rtems_interrupt_server_control *server; |
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144 | rtems_vector_number vector; |
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145 | rtems_option options; |
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146 | rtems_interrupt_handler handler; |
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147 | void *arg; |
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148 | rtems_id task; |
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149 | rtems_status_code sc; |
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150 | } bsp_interrupt_server_helper_data; |
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151 | |
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152 | static void bsp_interrupt_server_install_helper(void *arg) |
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153 | { |
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154 | bsp_interrupt_server_helper_data *hd = arg; |
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155 | rtems_status_code sc; |
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156 | rtems_interrupt_server_entry *e; |
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157 | rtems_interrupt_server_action *a; |
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158 | rtems_option trigger_options; |
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159 | |
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160 | a = calloc(1, sizeof(*a)); |
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161 | if (a == NULL) { |
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162 | hd->sc = RTEMS_NO_MEMORY; |
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163 | rtems_event_transient_send(hd->task); |
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164 | return; |
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165 | } |
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166 | |
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167 | a->handler = hd->handler; |
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168 | a->arg = hd->arg; |
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169 | |
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170 | bsp_interrupt_lock(); |
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171 | |
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172 | e = bsp_interrupt_server_query_entry(hd->vector, &trigger_options); |
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173 | if (e == NULL) { |
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174 | e = calloc(1, sizeof(*e)); |
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175 | if (e != NULL) { |
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176 | e->server = hd->server; |
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177 | e->vector = hd->vector; |
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178 | e->actions = a; |
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179 | |
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180 | sc = rtems_interrupt_handler_install( |
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181 | hd->vector, |
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182 | "IRQS", |
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183 | hd->options & RTEMS_INTERRUPT_UNIQUE, |
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184 | bsp_interrupt_server_trigger, |
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185 | e |
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186 | ); |
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187 | if (sc != RTEMS_SUCCESSFUL) { |
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188 | free(e); |
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189 | } |
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190 | } else { |
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191 | sc = RTEMS_NO_MEMORY; |
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192 | } |
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193 | #if defined(RTEMS_SMP) |
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194 | } else if (e->server != hd->server) { |
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195 | sc = RTEMS_RESOURCE_IN_USE; |
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196 | #endif |
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197 | } else if ( |
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198 | RTEMS_INTERRUPT_IS_UNIQUE(hd->options) |
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199 | || RTEMS_INTERRUPT_IS_UNIQUE(trigger_options) |
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200 | ) { |
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201 | sc = RTEMS_RESOURCE_IN_USE; |
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202 | } else { |
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203 | rtems_interrupt_server_action **link = &e->actions; |
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204 | rtems_interrupt_server_action *c; |
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205 | |
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206 | sc = RTEMS_SUCCESSFUL; |
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207 | |
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208 | while ((c = *link) != NULL) { |
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209 | if (c->handler == hd->handler && c->arg == hd->arg) { |
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210 | sc = RTEMS_TOO_MANY; |
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211 | break; |
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212 | } |
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213 | |
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214 | link = &c->next; |
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215 | } |
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216 | |
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217 | if (sc == RTEMS_SUCCESSFUL) { |
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218 | *link = a; |
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219 | } |
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220 | } |
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221 | |
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222 | bsp_interrupt_unlock(); |
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223 | |
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224 | if (sc != RTEMS_SUCCESSFUL) { |
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225 | free(a); |
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226 | } |
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227 | |
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228 | hd->sc = sc; |
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229 | rtems_event_transient_send(hd->task); |
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230 | } |
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231 | |
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232 | static void bsp_interrupt_server_remove_helper(void *arg) |
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233 | { |
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234 | bsp_interrupt_server_helper_data *hd = arg; |
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235 | rtems_status_code sc; |
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236 | rtems_interrupt_server_entry *e; |
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237 | rtems_option trigger_options; |
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238 | |
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239 | bsp_interrupt_lock(); |
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240 | |
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241 | e = bsp_interrupt_server_query_entry(hd->vector, &trigger_options); |
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242 | if (e != NULL) { |
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243 | rtems_interrupt_server_action **link = &e->actions; |
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244 | rtems_interrupt_server_action *c; |
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245 | |
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246 | while ((c = *link) != NULL) { |
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247 | if (c->handler == hd->handler && c->arg == hd->arg) { |
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248 | break; |
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249 | } |
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250 | |
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251 | link = &c->next; |
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252 | } |
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253 | |
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254 | if (c != NULL) { |
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255 | bool remove_last = e->actions->next == NULL; |
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256 | |
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257 | if (remove_last) { |
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258 | rtems_interrupt_handler_remove( |
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259 | hd->vector, |
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260 | bsp_interrupt_server_trigger, |
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261 | e |
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262 | ); |
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263 | } |
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264 | |
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265 | *link = c->next; |
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266 | free(c); |
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267 | |
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268 | if (remove_last) { |
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269 | free(e); |
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270 | } |
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271 | |
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272 | sc = RTEMS_SUCCESSFUL; |
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273 | } else { |
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274 | sc = RTEMS_UNSATISFIED; |
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275 | } |
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276 | } else { |
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277 | sc = RTEMS_INVALID_ID; |
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278 | } |
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279 | |
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280 | bsp_interrupt_unlock(); |
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281 | |
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282 | hd->sc = sc; |
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283 | rtems_event_transient_send(hd->task); |
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284 | } |
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285 | |
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286 | static rtems_status_code bsp_interrupt_server_call_helper( |
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287 | rtems_interrupt_server_control *s, |
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288 | rtems_vector_number vector, |
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289 | rtems_option options, |
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290 | rtems_interrupt_handler handler, |
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291 | void *arg, |
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292 | void (*helper)(void *) |
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293 | ) |
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294 | { |
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295 | bsp_interrupt_server_helper_data hd = { |
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296 | .server = s, |
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297 | .vector = vector, |
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298 | .options = options, |
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299 | .handler = handler, |
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300 | .arg = arg, |
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301 | .task = rtems_task_self() |
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302 | }; |
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303 | rtems_interrupt_server_action a = { |
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304 | .handler = helper, |
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305 | .arg = &hd |
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306 | }; |
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307 | rtems_interrupt_server_entry e = { |
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308 | .server = s, |
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309 | .vector = BSP_INTERRUPT_SERVER_MANAGEMENT_VECTOR, |
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310 | .actions = &a |
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311 | }; |
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312 | |
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313 | bsp_interrupt_server_trigger(&e); |
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314 | rtems_event_transient_receive(RTEMS_WAIT, RTEMS_NO_TIMEOUT); |
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315 | |
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316 | return hd.sc; |
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317 | } |
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318 | |
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319 | static rtems_interrupt_server_entry *bsp_interrupt_server_get_entry( |
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320 | rtems_interrupt_server_control *s |
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321 | ) |
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322 | { |
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323 | rtems_interrupt_lock_context lock_context; |
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324 | rtems_interrupt_server_entry *e; |
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325 | |
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326 | rtems_interrupt_lock_acquire(&s->lock, &lock_context); |
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327 | |
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328 | if (!rtems_chain_is_empty(&s->entries)) { |
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329 | e = (rtems_interrupt_server_entry *) |
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330 | rtems_chain_get_first_unprotected(&s->entries); |
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331 | rtems_chain_set_off_chain(&e->node); |
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332 | } else { |
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333 | e = NULL; |
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334 | } |
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335 | |
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336 | rtems_interrupt_lock_release(&s->lock, &lock_context); |
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337 | |
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338 | return e; |
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339 | } |
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340 | |
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341 | static void bsp_interrupt_server_task(rtems_task_argument arg) |
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342 | { |
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343 | rtems_interrupt_server_control *s = (rtems_interrupt_server_control *) arg; |
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344 | |
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345 | while (true) { |
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346 | rtems_event_set events; |
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347 | rtems_interrupt_server_entry *e; |
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348 | |
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349 | rtems_event_system_receive( |
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350 | RTEMS_EVENT_SYSTEM_SERVER, |
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351 | RTEMS_EVENT_ALL | RTEMS_WAIT, |
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352 | RTEMS_NO_TIMEOUT, |
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353 | &events |
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354 | ); |
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355 | |
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356 | while ((e = bsp_interrupt_server_get_entry(s)) != NULL) { |
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357 | rtems_interrupt_server_action *action = e->actions; |
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358 | rtems_vector_number vector = e->vector; |
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359 | |
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360 | do { |
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361 | rtems_interrupt_server_action *current = action; |
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362 | action = action->next; |
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363 | (*current->handler)(current->arg); |
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364 | } while (action != NULL); |
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365 | |
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366 | if (bsp_interrupt_is_valid_vector(vector)) { |
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367 | bsp_interrupt_vector_enable(vector); |
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368 | } |
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369 | } |
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370 | } |
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371 | } |
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372 | |
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373 | rtems_status_code rtems_interrupt_server_handler_install( |
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374 | uint32_t server_index, |
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375 | rtems_vector_number vector, |
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376 | const char *info, |
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377 | rtems_option options, |
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378 | rtems_interrupt_handler handler, |
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379 | void *arg |
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380 | ) |
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381 | { |
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382 | rtems_status_code sc; |
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383 | rtems_interrupt_server_control *s; |
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384 | |
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385 | s = bsp_interrupt_server_get_context(server_index, &sc); |
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386 | if (s == NULL) { |
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387 | return sc; |
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388 | } |
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389 | |
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390 | return bsp_interrupt_server_call_helper( |
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391 | s, |
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392 | vector, |
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393 | options, |
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394 | handler, |
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395 | arg, |
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396 | bsp_interrupt_server_install_helper |
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397 | ); |
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398 | } |
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399 | |
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400 | rtems_status_code rtems_interrupt_server_handler_remove( |
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401 | uint32_t server_index, |
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402 | rtems_vector_number vector, |
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403 | rtems_interrupt_handler handler, |
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404 | void *arg |
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405 | ) |
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406 | { |
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407 | rtems_status_code sc; |
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408 | rtems_interrupt_server_control *s; |
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409 | |
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410 | s = bsp_interrupt_server_get_context(server_index, &sc); |
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411 | if (s == NULL) { |
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412 | return sc; |
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413 | } |
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414 | |
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415 | return bsp_interrupt_server_call_helper( |
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416 | s, |
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417 | vector, |
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418 | 0, |
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419 | handler, |
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420 | arg, |
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421 | bsp_interrupt_server_remove_helper |
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422 | ); |
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423 | } |
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424 | |
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425 | typedef struct { |
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426 | rtems_interrupt_per_handler_routine routine; |
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427 | void *arg; |
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428 | } bsp_interrupt_server_handler_iterate_helper_data; |
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429 | |
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430 | static void bsp_interrupt_server_handler_iterate_helper(void *arg) |
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431 | { |
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432 | bsp_interrupt_server_helper_data *hd = arg; |
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433 | bsp_interrupt_server_handler_iterate_helper_data *hihd = hd->arg; |
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434 | rtems_status_code sc; |
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435 | rtems_interrupt_server_entry *e; |
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436 | rtems_option trigger_options; |
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437 | |
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438 | bsp_interrupt_lock(); |
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439 | |
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440 | e = bsp_interrupt_server_query_entry(hd->vector, &trigger_options); |
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441 | if (e != NULL) { |
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442 | rtems_interrupt_server_action **link = &e->actions; |
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443 | rtems_interrupt_server_action *c; |
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444 | |
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445 | while ((c = *link) != NULL) { |
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446 | (*hihd->routine)(hihd->arg, NULL, trigger_options, c->handler, c->arg); |
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447 | link = &c->next; |
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448 | } |
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449 | |
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450 | sc = RTEMS_SUCCESSFUL; |
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451 | } else { |
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452 | sc = RTEMS_UNSATISFIED; |
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453 | } |
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454 | |
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455 | bsp_interrupt_unlock(); |
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456 | |
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457 | hd->sc = sc; |
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458 | rtems_event_transient_send(hd->task); |
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459 | } |
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460 | |
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461 | rtems_status_code rtems_interrupt_server_handler_iterate( |
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462 | uint32_t server_index, |
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463 | rtems_vector_number vector, |
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464 | rtems_interrupt_per_handler_routine routine, |
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465 | void *arg |
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466 | ) |
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467 | { |
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468 | rtems_status_code sc; |
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469 | bsp_interrupt_server_handler_iterate_helper_data hihd; |
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470 | rtems_interrupt_server_control *s; |
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471 | |
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472 | s = bsp_interrupt_server_get_context(server_index, &sc); |
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473 | if (s == NULL) { |
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474 | return sc; |
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475 | } |
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476 | |
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477 | if (!bsp_interrupt_is_valid_vector(vector)) { |
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478 | return RTEMS_INVALID_ID; |
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479 | } |
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480 | |
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481 | hihd.routine = routine; |
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482 | hihd.arg = arg; |
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483 | return bsp_interrupt_server_call_helper( |
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484 | s, |
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485 | vector, |
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486 | 0, |
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487 | NULL, |
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488 | &hihd, |
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489 | bsp_interrupt_server_handler_iterate_helper |
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490 | ); |
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491 | } |
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492 | |
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493 | /* |
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494 | * The default server is statically allocated. Just clear the structure so |
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495 | * that it can be re-initialized. |
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496 | */ |
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497 | static void bsp_interrupt_server_destroy_default( |
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498 | rtems_interrupt_server_control *s |
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499 | ) |
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500 | { |
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501 | memset(s, 0, sizeof(*s)); |
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502 | } |
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503 | |
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504 | #if defined(RTEMS_SMP) |
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505 | static void bsp_interrupt_server_destroy_secondary( |
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506 | rtems_interrupt_server_control *s |
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507 | ) |
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508 | { |
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509 | free(s); |
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510 | } |
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511 | #endif |
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512 | |
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513 | static rtems_status_code bsp_interrupt_server_create( |
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514 | rtems_interrupt_server_control *s, |
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515 | rtems_task_priority priority, |
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516 | size_t stack_size, |
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517 | rtems_mode modes, |
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518 | rtems_attribute attributes, |
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519 | uint32_t cpu_index |
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520 | ) |
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521 | { |
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522 | rtems_status_code sc; |
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523 | #if defined(RTEMS_SMP) |
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524 | rtems_id scheduler; |
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525 | cpu_set_t cpu; |
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526 | #endif |
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527 | |
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528 | sc = rtems_task_create( |
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529 | rtems_build_name('I', 'R', 'Q', 'S'), |
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530 | priority, |
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531 | stack_size, |
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532 | modes, |
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533 | attributes, |
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534 | &s->server |
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535 | ); |
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536 | if (sc != RTEMS_SUCCESSFUL) { |
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537 | (*s->destroy)(s); |
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538 | return sc; |
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539 | } |
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540 | |
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541 | rtems_interrupt_lock_initialize(&s->lock, "Interrupt Server"); |
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542 | rtems_chain_initialize_empty(&s->entries); |
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543 | |
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544 | #if defined(RTEMS_SMP) |
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545 | sc = rtems_scheduler_ident_by_processor(cpu_index, &scheduler); |
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546 | |
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547 | /* |
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548 | * If a scheduler exists for the processor, then move it to this scheduler |
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549 | * and try to set the affinity to the processor, otherwise keep the scheduler |
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550 | * of the executing thread. |
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551 | */ |
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552 | if (sc == RTEMS_SUCCESSFUL) { |
---|
553 | sc = rtems_task_set_scheduler(s->server, scheduler, priority); |
---|
554 | _Assert(sc == RTEMS_SUCCESSFUL); |
---|
555 | |
---|
556 | /* Set the task to processor affinity on a best-effort basis */ |
---|
557 | CPU_ZERO(&cpu); |
---|
558 | CPU_SET(cpu_index, &cpu); |
---|
559 | (void) rtems_task_set_affinity(s->server, sizeof(cpu), &cpu); |
---|
560 | } |
---|
561 | #else |
---|
562 | (void) cpu_index; |
---|
563 | #endif |
---|
564 | |
---|
565 | rtems_chain_append_unprotected(&bsp_interrupt_server_chain, &s->node); |
---|
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 | return sc; |
---|
575 | } |
---|
576 | |
---|
577 | rtems_status_code rtems_interrupt_server_initialize( |
---|
578 | rtems_task_priority priority, |
---|
579 | size_t stack_size, |
---|
580 | rtems_mode modes, |
---|
581 | rtems_attribute attributes, |
---|
582 | uint32_t *server_count |
---|
583 | ) |
---|
584 | { |
---|
585 | rtems_status_code sc; |
---|
586 | rtems_interrupt_server_control *s; |
---|
587 | uint32_t cpu_index; |
---|
588 | #if defined(RTEMS_SMP) |
---|
589 | uint32_t cpu_count; |
---|
590 | #endif |
---|
591 | |
---|
592 | cpu_index = 0; |
---|
593 | s = &bsp_interrupt_server_default; |
---|
594 | |
---|
595 | bsp_interrupt_lock(); |
---|
596 | |
---|
597 | if (s->server != 0) { |
---|
598 | sc = RTEMS_INCORRECT_STATE; |
---|
599 | goto done; |
---|
600 | } |
---|
601 | |
---|
602 | s->destroy = bsp_interrupt_server_destroy_default; |
---|
603 | sc = bsp_interrupt_server_create( |
---|
604 | s, |
---|
605 | priority, |
---|
606 | stack_size, |
---|
607 | modes, |
---|
608 | attributes, |
---|
609 | cpu_index |
---|
610 | ); |
---|
611 | if (sc != RTEMS_SUCCESSFUL) { |
---|
612 | goto done; |
---|
613 | } |
---|
614 | |
---|
615 | cpu_index = 1; |
---|
616 | |
---|
617 | #if defined(RTEMS_SMP) |
---|
618 | cpu_count = rtems_scheduler_get_processor_maximum(); |
---|
619 | |
---|
620 | while (cpu_index < cpu_count) { |
---|
621 | s = calloc(1, sizeof(*s)); |
---|
622 | |
---|
623 | if (s == NULL) { |
---|
624 | sc = RTEMS_NO_MEMORY; |
---|
625 | goto done; |
---|
626 | } |
---|
627 | |
---|
628 | s->destroy = bsp_interrupt_server_destroy_secondary; |
---|
629 | s->index = cpu_index; |
---|
630 | sc = bsp_interrupt_server_create( |
---|
631 | s, |
---|
632 | priority, |
---|
633 | stack_size, |
---|
634 | modes, |
---|
635 | attributes, |
---|
636 | cpu_index |
---|
637 | ); |
---|
638 | if (sc != RTEMS_SUCCESSFUL) { |
---|
639 | goto done; |
---|
640 | } |
---|
641 | |
---|
642 | ++cpu_index; |
---|
643 | } |
---|
644 | #endif |
---|
645 | |
---|
646 | done: |
---|
647 | bsp_interrupt_unlock(); |
---|
648 | |
---|
649 | if (server_count != NULL) { |
---|
650 | *server_count = cpu_index; |
---|
651 | } |
---|
652 | |
---|
653 | return sc; |
---|
654 | } |
---|
655 | |
---|
656 | rtems_status_code rtems_interrupt_server_create( |
---|
657 | rtems_interrupt_server_control *s, |
---|
658 | const rtems_interrupt_server_config *config, |
---|
659 | uint32_t *server_index |
---|
660 | ) |
---|
661 | { |
---|
662 | rtems_status_code sc; |
---|
663 | |
---|
664 | sc = rtems_task_create( |
---|
665 | config->name, |
---|
666 | config->priority, |
---|
667 | config->storage_size, |
---|
668 | config->modes, |
---|
669 | config->attributes, |
---|
670 | &s->server |
---|
671 | ); |
---|
672 | if (sc != RTEMS_SUCCESSFUL) { |
---|
673 | return sc; |
---|
674 | } |
---|
675 | |
---|
676 | rtems_interrupt_lock_initialize(&s->lock, "Interrupt Server"); |
---|
677 | rtems_chain_initialize_empty(&s->entries); |
---|
678 | s->destroy = config->destroy; |
---|
679 | s->index = rtems_object_id_get_index(s->server) |
---|
680 | + rtems_scheduler_get_processor_maximum(); |
---|
681 | *server_index = s->index; |
---|
682 | |
---|
683 | bsp_interrupt_lock(); |
---|
684 | rtems_chain_initialize_node(&s->node); |
---|
685 | rtems_chain_append_unprotected(&bsp_interrupt_server_chain, &s->node); |
---|
686 | bsp_interrupt_unlock(); |
---|
687 | |
---|
688 | sc = rtems_task_start( |
---|
689 | s->server, |
---|
690 | bsp_interrupt_server_task, |
---|
691 | (rtems_task_argument) s |
---|
692 | ); |
---|
693 | _Assert(sc == RTEMS_SUCCESSFUL); |
---|
694 | |
---|
695 | return sc; |
---|
696 | } |
---|
697 | |
---|
698 | static void bsp_interrupt_server_destroy_helper(void *arg) |
---|
699 | { |
---|
700 | bsp_interrupt_server_helper_data *hd = arg; |
---|
701 | rtems_interrupt_server_control *s = hd->server; |
---|
702 | rtems_status_code sc; |
---|
703 | |
---|
704 | bsp_interrupt_lock(); |
---|
705 | rtems_chain_extract_unprotected(&s->node); |
---|
706 | bsp_interrupt_unlock(); |
---|
707 | |
---|
708 | rtems_interrupt_lock_destroy(&s->lock); |
---|
709 | |
---|
710 | if (s->destroy != NULL) { |
---|
711 | (*s->destroy)(s); |
---|
712 | } |
---|
713 | |
---|
714 | sc = rtems_event_transient_send(hd->task); |
---|
715 | _Assert(sc == RTEMS_SUCCESSFUL); |
---|
716 | (void) sc; |
---|
717 | |
---|
718 | rtems_task_exit(); |
---|
719 | } |
---|
720 | |
---|
721 | rtems_status_code rtems_interrupt_server_delete(uint32_t server_index) |
---|
722 | { |
---|
723 | rtems_status_code sc; |
---|
724 | rtems_interrupt_server_control *s; |
---|
725 | |
---|
726 | s = bsp_interrupt_server_get_context(server_index, &sc); |
---|
727 | if (s == NULL) { |
---|
728 | return sc; |
---|
729 | } |
---|
730 | |
---|
731 | bsp_interrupt_server_call_helper( |
---|
732 | s, |
---|
733 | BSP_INTERRUPT_SERVER_MANAGEMENT_VECTOR, |
---|
734 | 0, |
---|
735 | NULL, |
---|
736 | NULL, |
---|
737 | bsp_interrupt_server_destroy_helper |
---|
738 | ); |
---|
739 | return RTEMS_SUCCESSFUL; |
---|
740 | } |
---|
741 | |
---|
742 | static void bsp_interrupt_server_entry_initialize( |
---|
743 | rtems_interrupt_server_entry *entry, |
---|
744 | rtems_interrupt_server_control *s |
---|
745 | ) |
---|
746 | { |
---|
747 | rtems_chain_set_off_chain(&entry->node); |
---|
748 | entry->server = s; |
---|
749 | entry->vector = BSP_INTERRUPT_SERVER_MANAGEMENT_VECTOR; |
---|
750 | entry->actions = NULL; |
---|
751 | } |
---|
752 | |
---|
753 | static void bsp_interrupt_server_action_prepend( |
---|
754 | rtems_interrupt_server_entry *entry, |
---|
755 | rtems_interrupt_server_action *action, |
---|
756 | rtems_interrupt_handler handler, |
---|
757 | void *arg |
---|
758 | ) |
---|
759 | { |
---|
760 | action->handler = handler; |
---|
761 | action->arg = arg; |
---|
762 | action->next = entry->actions; |
---|
763 | entry->actions = action; |
---|
764 | } |
---|
765 | |
---|
766 | rtems_status_code rtems_interrupt_server_entry_initialize( |
---|
767 | uint32_t server_index, |
---|
768 | rtems_interrupt_server_entry *entry |
---|
769 | ) |
---|
770 | { |
---|
771 | rtems_status_code sc; |
---|
772 | rtems_interrupt_server_control *s; |
---|
773 | |
---|
774 | s = bsp_interrupt_server_get_context(server_index, &sc); |
---|
775 | if (s == NULL) { |
---|
776 | return sc; |
---|
777 | } |
---|
778 | |
---|
779 | bsp_interrupt_server_entry_initialize(entry, s); |
---|
780 | return RTEMS_SUCCESSFUL; |
---|
781 | } |
---|
782 | |
---|
783 | void rtems_interrupt_server_action_prepend( |
---|
784 | rtems_interrupt_server_entry *entry, |
---|
785 | rtems_interrupt_server_action *action, |
---|
786 | rtems_interrupt_handler handler, |
---|
787 | void *arg |
---|
788 | ) |
---|
789 | { |
---|
790 | bsp_interrupt_server_action_prepend(entry, action, handler, arg); |
---|
791 | } |
---|
792 | |
---|
793 | void rtems_interrupt_server_entry_submit( |
---|
794 | rtems_interrupt_server_entry *entry |
---|
795 | ) |
---|
796 | { |
---|
797 | bsp_interrupt_server_trigger(entry); |
---|
798 | } |
---|
799 | |
---|
800 | rtems_status_code rtems_interrupt_server_entry_move( |
---|
801 | rtems_interrupt_server_entry *entry, |
---|
802 | uint32_t destination_server_index |
---|
803 | ) |
---|
804 | { |
---|
805 | rtems_status_code sc; |
---|
806 | rtems_interrupt_server_control *s; |
---|
807 | |
---|
808 | s = bsp_interrupt_server_get_context(destination_server_index, &sc); |
---|
809 | if (s == NULL) { |
---|
810 | return sc; |
---|
811 | } |
---|
812 | |
---|
813 | entry->server = s; |
---|
814 | return RTEMS_SUCCESSFUL; |
---|
815 | } |
---|
816 | |
---|
817 | static void bsp_interrupt_server_entry_synchronize_helper(void *arg) |
---|
818 | { |
---|
819 | bsp_interrupt_server_helper_data *hd = arg; |
---|
820 | |
---|
821 | rtems_event_transient_send(hd->task); |
---|
822 | } |
---|
823 | |
---|
824 | void rtems_interrupt_server_entry_destroy( |
---|
825 | rtems_interrupt_server_entry *entry |
---|
826 | ) |
---|
827 | { |
---|
828 | rtems_interrupt_server_control *s; |
---|
829 | rtems_interrupt_lock_context lock_context; |
---|
830 | |
---|
831 | s = entry->server; |
---|
832 | rtems_interrupt_lock_acquire(&s->lock, &lock_context); |
---|
833 | |
---|
834 | if (!rtems_chain_is_node_off_chain(&entry->node)) { |
---|
835 | rtems_chain_extract_unprotected(&entry->node); |
---|
836 | rtems_chain_set_off_chain(&entry->node); |
---|
837 | } |
---|
838 | |
---|
839 | rtems_interrupt_lock_release(&s->lock, &lock_context); |
---|
840 | |
---|
841 | bsp_interrupt_server_call_helper( |
---|
842 | s, |
---|
843 | BSP_INTERRUPT_SERVER_MANAGEMENT_VECTOR, |
---|
844 | 0, |
---|
845 | NULL, |
---|
846 | NULL, |
---|
847 | bsp_interrupt_server_entry_synchronize_helper |
---|
848 | ); |
---|
849 | } |
---|
850 | |
---|
851 | rtems_status_code rtems_interrupt_server_request_initialize( |
---|
852 | uint32_t server_index, |
---|
853 | rtems_interrupt_server_request *request, |
---|
854 | rtems_interrupt_handler handler, |
---|
855 | void *arg |
---|
856 | ) |
---|
857 | { |
---|
858 | rtems_status_code sc; |
---|
859 | rtems_interrupt_server_control *s; |
---|
860 | |
---|
861 | s = bsp_interrupt_server_get_context(server_index, &sc); |
---|
862 | if (s == NULL) { |
---|
863 | return sc; |
---|
864 | } |
---|
865 | |
---|
866 | bsp_interrupt_server_entry_initialize(&request->entry, s); |
---|
867 | bsp_interrupt_server_action_prepend( |
---|
868 | &request->entry, |
---|
869 | &request->action, |
---|
870 | handler, |
---|
871 | arg |
---|
872 | ); |
---|
873 | return RTEMS_SUCCESSFUL; |
---|
874 | } |
---|
875 | |
---|
876 | static void bsp_interrupt_server_handler_move_helper(void *arg) |
---|
877 | { |
---|
878 | bsp_interrupt_server_helper_data *hd = arg; |
---|
879 | bsp_interrupt_server_handler_iterate_helper_data *hihd = hd->arg; |
---|
880 | rtems_interrupt_server_entry *e; |
---|
881 | rtems_option trigger_options; |
---|
882 | |
---|
883 | bsp_interrupt_lock(); |
---|
884 | |
---|
885 | e = bsp_interrupt_server_query_entry(hd->vector, &trigger_options); |
---|
886 | if (e != NULL) { |
---|
887 | rtems_interrupt_lock_context lock_context; |
---|
888 | rtems_interrupt_server_control *src = e->server; |
---|
889 | rtems_interrupt_server_control *dst = hihd->arg; |
---|
890 | bool pending; |
---|
891 | |
---|
892 | /* The source server is only used in SMP configurations for the lock */ |
---|
893 | (void) src; |
---|
894 | |
---|
895 | rtems_interrupt_lock_acquire(&src->lock, &lock_context); |
---|
896 | |
---|
897 | pending = !rtems_chain_is_node_off_chain(&e->node); |
---|
898 | if (pending) { |
---|
899 | rtems_chain_extract_unprotected(&e->node); |
---|
900 | rtems_chain_set_off_chain(&e->node); |
---|
901 | } |
---|
902 | |
---|
903 | rtems_interrupt_lock_release(&src->lock, &lock_context); |
---|
904 | |
---|
905 | e->server = dst; |
---|
906 | |
---|
907 | if (pending) { |
---|
908 | bsp_interrupt_server_trigger(e); |
---|
909 | } |
---|
910 | } |
---|
911 | |
---|
912 | bsp_interrupt_unlock(); |
---|
913 | |
---|
914 | rtems_event_transient_send(hd->task); |
---|
915 | } |
---|
916 | |
---|
917 | rtems_status_code rtems_interrupt_server_move( |
---|
918 | uint32_t source_server_index, |
---|
919 | rtems_vector_number vector, |
---|
920 | uint32_t destination_server_index |
---|
921 | ) |
---|
922 | { |
---|
923 | rtems_status_code sc; |
---|
924 | rtems_interrupt_server_control *src; |
---|
925 | rtems_interrupt_server_control *dst; |
---|
926 | bsp_interrupt_server_handler_iterate_helper_data hihd; |
---|
927 | |
---|
928 | src = bsp_interrupt_server_get_context(source_server_index, &sc); |
---|
929 | if (src == NULL) { |
---|
930 | return sc; |
---|
931 | } |
---|
932 | |
---|
933 | dst = bsp_interrupt_server_get_context(destination_server_index, &sc); |
---|
934 | if (dst == NULL) { |
---|
935 | return sc; |
---|
936 | } |
---|
937 | |
---|
938 | if (!bsp_interrupt_is_valid_vector(vector)) { |
---|
939 | return RTEMS_INVALID_ID; |
---|
940 | } |
---|
941 | |
---|
942 | hihd.arg = dst; |
---|
943 | bsp_interrupt_server_call_helper( |
---|
944 | src, |
---|
945 | vector, |
---|
946 | 0, |
---|
947 | NULL, |
---|
948 | &hihd, |
---|
949 | bsp_interrupt_server_handler_move_helper |
---|
950 | ); |
---|
951 | return RTEMS_SUCCESSFUL; |
---|
952 | } |
---|
953 | |
---|
954 | static void bsp_interrupt_server_entry_suspend_helper(void *arg) |
---|
955 | { |
---|
956 | bsp_interrupt_server_helper_data *hd = arg; |
---|
957 | rtems_event_set events; |
---|
958 | |
---|
959 | rtems_event_transient_send(hd->task); |
---|
960 | rtems_event_system_receive( |
---|
961 | RTEMS_EVENT_SYSTEM_SERVER_RESUME, |
---|
962 | RTEMS_WAIT, |
---|
963 | RTEMS_NO_TIMEOUT, |
---|
964 | &events |
---|
965 | ); |
---|
966 | } |
---|
967 | |
---|
968 | rtems_status_code rtems_interrupt_server_suspend(uint32_t server_index) |
---|
969 | { |
---|
970 | rtems_status_code sc; |
---|
971 | rtems_interrupt_server_control *s; |
---|
972 | |
---|
973 | s = bsp_interrupt_server_get_context(server_index, &sc); |
---|
974 | if (s == NULL) { |
---|
975 | return sc; |
---|
976 | } |
---|
977 | |
---|
978 | bsp_interrupt_server_call_helper( |
---|
979 | s, |
---|
980 | BSP_INTERRUPT_SERVER_MANAGEMENT_VECTOR, |
---|
981 | 0, |
---|
982 | NULL, |
---|
983 | NULL, |
---|
984 | bsp_interrupt_server_entry_suspend_helper |
---|
985 | ); |
---|
986 | return RTEMS_SUCCESSFUL; |
---|
987 | } |
---|
988 | |
---|
989 | rtems_status_code rtems_interrupt_server_resume(uint32_t server_index) |
---|
990 | { |
---|
991 | rtems_status_code sc; |
---|
992 | rtems_interrupt_server_control *s; |
---|
993 | |
---|
994 | s = bsp_interrupt_server_get_context(server_index, &sc); |
---|
995 | if (s == NULL) { |
---|
996 | return sc; |
---|
997 | } |
---|
998 | |
---|
999 | rtems_event_system_send(s->server, RTEMS_EVENT_SYSTEM_SERVER_RESUME); |
---|
1000 | bsp_interrupt_server_call_helper( |
---|
1001 | s, |
---|
1002 | BSP_INTERRUPT_SERVER_MANAGEMENT_VECTOR, |
---|
1003 | 0, |
---|
1004 | NULL, |
---|
1005 | NULL, |
---|
1006 | bsp_interrupt_server_entry_synchronize_helper |
---|
1007 | ); |
---|
1008 | return RTEMS_SUCCESSFUL; |
---|
1009 | } |
---|
1010 | |
---|
1011 | rtems_status_code rtems_interrupt_server_set_affinity( |
---|
1012 | uint32_t server_index, |
---|
1013 | size_t affinity_size, |
---|
1014 | const cpu_set_t *affinity, |
---|
1015 | rtems_task_priority priority |
---|
1016 | ) |
---|
1017 | { |
---|
1018 | rtems_status_code sc; |
---|
1019 | rtems_interrupt_server_control *s; |
---|
1020 | rtems_id scheduler; |
---|
1021 | |
---|
1022 | s = bsp_interrupt_server_get_context(server_index, &sc); |
---|
1023 | if (s == NULL) { |
---|
1024 | return sc; |
---|
1025 | } |
---|
1026 | |
---|
1027 | sc = rtems_scheduler_ident_by_processor_set( |
---|
1028 | affinity_size, |
---|
1029 | affinity, |
---|
1030 | &scheduler |
---|
1031 | ); |
---|
1032 | if (sc != RTEMS_SUCCESSFUL) { |
---|
1033 | return sc; |
---|
1034 | } |
---|
1035 | |
---|
1036 | sc = rtems_task_set_scheduler(s->server, scheduler, priority); |
---|
1037 | if (sc != RTEMS_SUCCESSFUL) { |
---|
1038 | return sc; |
---|
1039 | } |
---|
1040 | |
---|
1041 | return rtems_task_set_affinity(s->server, affinity_size, affinity); |
---|
1042 | } |
---|