1 | /* |
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2 | * Copyright (c) 2014 Aeroflex Gaisler AB. All rights reserved. |
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3 | * Copyright (c) 2017 embedded brains GmbH. |
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4 | * |
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5 | * The license and distribution terms for this file may be |
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6 | * found in the file LICENSE in this distribution or at |
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7 | * http://www.rtems.org/license/LICENSE. |
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8 | */ |
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9 | |
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10 | #ifdef HAVE_CONFIG_H |
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11 | #include "config.h" |
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12 | #endif |
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13 | |
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14 | #include <rtems/score/atomic.h> |
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15 | #include <rtems/score/smpbarrier.h> |
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16 | #include <rtems/score/smpimpl.h> |
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17 | #include <rtems.h> |
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18 | #include <limits.h> |
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19 | #include <setjmp.h> |
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20 | #include <string.h> |
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21 | |
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22 | #include "tmacros.h" |
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23 | |
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24 | const char rtems_test_name[] = "SMPCACHE 1"; |
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25 | |
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26 | CPU_STRUCTURE_ALIGNMENT static int data_to_flush[1024]; |
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27 | |
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28 | #define CPU_COUNT 32 |
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29 | |
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30 | #define WORKER_PRIORITY 100 |
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31 | |
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32 | typedef struct { |
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33 | SMP_barrier_Control barrier; |
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34 | uint32_t count[CPU_COUNT]; |
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35 | bool do_longjmp[CPU_COUNT]; |
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36 | jmp_buf instruction_invalidate_return_context[CPU_COUNT]; |
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37 | } test_context; |
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38 | |
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39 | static test_context ctx = { |
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40 | .barrier = SMP_BARRIER_CONTROL_INITIALIZER, |
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41 | }; |
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42 | |
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43 | static void function_to_flush( void ) |
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44 | { |
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45 | /* Does nothing. Used to give a pointer to instruction address space. */ |
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46 | } |
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47 | |
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48 | static void test_action( void *arg ) |
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49 | { |
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50 | rtems_test_assert(arg == &ctx); |
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51 | |
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52 | ctx.count[rtems_get_current_processor()]++; |
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53 | } |
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54 | |
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55 | typedef void ( *test_case )( |
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56 | size_t set_size, |
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57 | const cpu_set_t *cpu_set, |
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58 | SMP_barrier_State *bs |
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59 | ); |
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60 | |
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61 | static void test_cache_flush_multiple_data_lines( |
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62 | size_t set_size, |
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63 | const cpu_set_t *cpu_set, |
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64 | SMP_barrier_State *bs |
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65 | ) |
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66 | { |
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67 | rtems_cache_flush_multiple_data_lines_processor_set( &data_to_flush, |
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68 | sizeof(data_to_flush), set_size, cpu_set ); |
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69 | } |
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70 | |
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71 | static void test_cache_invalidate_multiple_data_lines( |
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72 | size_t set_size, |
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73 | const cpu_set_t *cpu_set, |
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74 | SMP_barrier_State *bs |
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75 | ) |
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76 | { |
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77 | rtems_cache_invalidate_multiple_data_lines_processor_set( &data_to_flush, |
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78 | sizeof(data_to_flush), set_size, cpu_set ); |
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79 | } |
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80 | |
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81 | static void test_cache_flush_entire_data( |
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82 | size_t set_size, |
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83 | const cpu_set_t *cpu_set, |
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84 | SMP_barrier_State *bs |
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85 | ) |
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86 | { |
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87 | rtems_cache_flush_entire_data_processor_set( set_size, cpu_set ); |
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88 | } |
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89 | |
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90 | static void test_cache_invalidate_entire_instruction( |
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91 | size_t set_size, |
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92 | const cpu_set_t *cpu_set, |
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93 | SMP_barrier_State *bs |
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94 | ) |
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95 | { |
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96 | rtems_cache_invalidate_entire_instruction(); |
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97 | } |
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98 | |
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99 | static void test_cache_invalidate_multiple_instruction_lines( |
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100 | size_t set_size, |
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101 | const cpu_set_t *cpu_set, |
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102 | SMP_barrier_State *bs |
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103 | ) |
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104 | { |
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105 | uint32_t self = rtems_get_current_processor(); |
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106 | |
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107 | ctx.do_longjmp[self] = true; |
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108 | |
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109 | if (setjmp(ctx.instruction_invalidate_return_context[self]) == 0) { |
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110 | rtems_cache_invalidate_multiple_instruction_lines( &function_to_flush, |
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111 | 4 /* arbitrary size */ ); |
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112 | } |
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113 | |
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114 | ctx.do_longjmp[self] = false; |
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115 | } |
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116 | |
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117 | static void barrier( SMP_barrier_State *bs ) |
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118 | { |
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119 | _SMP_barrier_Wait( &ctx.barrier, bs, rtems_get_processor_count() ); |
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120 | } |
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121 | |
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122 | static void broadcast_test_init( void ) |
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123 | { |
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124 | ctx.count[rtems_get_current_processor()] = 0; |
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125 | } |
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126 | |
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127 | static void broadcast_test_body( |
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128 | size_t set_size, |
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129 | const cpu_set_t *cpu_set, |
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130 | SMP_barrier_State *bs |
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131 | ) |
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132 | { |
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133 | _SMP_Multicast_action( set_size, cpu_set, test_action, &ctx ); |
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134 | } |
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135 | |
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136 | static void broadcast_test_fini( void ) |
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137 | { |
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138 | rtems_test_assert( |
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139 | ctx.count[rtems_get_current_processor()] == rtems_get_processor_count() |
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140 | ); |
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141 | } |
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142 | |
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143 | static test_case test_cases[] = { |
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144 | test_cache_flush_multiple_data_lines, |
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145 | test_cache_invalidate_multiple_data_lines, |
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146 | test_cache_flush_entire_data, |
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147 | test_cache_invalidate_entire_instruction, |
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148 | test_cache_invalidate_multiple_instruction_lines, |
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149 | broadcast_test_body |
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150 | }; |
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151 | |
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152 | static void call_tests( size_t set_size, |
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153 | const cpu_set_t *cpu_set, SMP_barrier_State *bs ) |
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154 | { |
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155 | size_t i; |
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156 | |
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157 | broadcast_test_init(); |
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158 | |
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159 | for (i = 0; i < RTEMS_ARRAY_SIZE( test_cases ); ++i) { |
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160 | barrier( bs ); |
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161 | ( *test_cases[ i ] )( set_size, cpu_set, bs ); |
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162 | barrier( bs ); |
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163 | } |
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164 | |
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165 | broadcast_test_fini(); |
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166 | } |
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167 | |
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168 | static void call_tests_isr_disabled( size_t set_size, |
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169 | const cpu_set_t *cpu_set, SMP_barrier_State *bs ) |
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170 | { |
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171 | size_t i; |
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172 | |
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173 | broadcast_test_init(); |
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174 | |
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175 | for (i = 0; i < RTEMS_ARRAY_SIZE( test_cases ); ++i) { |
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176 | ISR_Level isr_level; |
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177 | |
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178 | _ISR_Local_disable( isr_level ); |
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179 | barrier( bs ); |
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180 | ( *test_cases[ i ] )( set_size, cpu_set, bs ); |
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181 | _ISR_Local_enable( isr_level ); |
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182 | barrier( bs ); |
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183 | } |
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184 | |
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185 | broadcast_test_fini(); |
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186 | } |
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187 | |
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188 | static void call_tests_with_thread_dispatch_disabled( size_t set_size, |
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189 | const cpu_set_t *cpu_set, SMP_barrier_State *bs ) |
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190 | { |
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191 | size_t i; |
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192 | |
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193 | broadcast_test_init(); |
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194 | |
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195 | for (i = 0; i < RTEMS_ARRAY_SIZE( test_cases ); ++i) { |
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196 | Per_CPU_Control *cpu_self; |
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197 | |
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198 | cpu_self = _Thread_Dispatch_disable(); |
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199 | barrier( bs ); |
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200 | ( *test_cases[ i ] )( set_size, cpu_set, bs ); |
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201 | barrier( bs ); |
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202 | _Thread_Dispatch_enable( cpu_self ); |
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203 | } |
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204 | |
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205 | broadcast_test_fini(); |
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206 | } |
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207 | |
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208 | static void cmlog( const char* str ) |
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209 | { |
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210 | if ( rtems_get_current_processor() == 0 ) |
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211 | printf( "%s", str ); |
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212 | } |
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213 | |
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214 | static void all_tests( void ) |
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215 | { |
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216 | uint32_t cpu_count = rtems_get_processor_count(); |
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217 | size_t set_size = CPU_ALLOC_SIZE( rtems_get_processor_count() ); |
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218 | cpu_set_t *cpu_set = CPU_ALLOC( rtems_get_processor_count() ); |
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219 | SMP_barrier_State bs = SMP_BARRIER_STATE_INITIALIZER; |
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220 | |
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221 | /* Send message to all available CPUs */ |
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222 | CPU_FILL_S( set_size, cpu_set ); |
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223 | |
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224 | /* Call test cases */ |
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225 | cmlog( "Calling test cases. " ); |
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226 | call_tests( set_size, cpu_set, &bs ); |
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227 | cmlog( "Done!\n"); |
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228 | |
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229 | /* Call test cases with ISR disabled */ |
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230 | cmlog( "Calling test cases with ISR disabled. " ); |
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231 | call_tests_isr_disabled( set_size, cpu_set, &bs ); |
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232 | cmlog( "Done!\n" ); |
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233 | |
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234 | /* Call test cases with thread dispatch disabled */ |
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235 | cmlog( "Calling test cases with thread_dispatch_disabled. "); |
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236 | call_tests_with_thread_dispatch_disabled( set_size, cpu_set, &bs ); |
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237 | cmlog( "Done!\n"); |
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238 | |
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239 | /* Done. Free up memory. */ |
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240 | _SMP_barrier_Wait( &ctx.barrier, &bs, cpu_count); |
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241 | CPU_FREE( cpu_set ); |
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242 | } |
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243 | |
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244 | static void worker_task(rtems_task_argument arg) |
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245 | { |
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246 | rtems_status_code sc; |
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247 | |
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248 | all_tests(); |
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249 | |
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250 | sc = rtems_task_suspend(RTEMS_SELF); |
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251 | rtems_test_assert(sc == RTEMS_SUCCESSFUL); |
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252 | } |
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253 | |
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254 | static void test_smp_cache_manager( void ) |
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255 | { |
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256 | rtems_status_code sc; |
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257 | size_t worker_index; |
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258 | uint32_t cpu_count = rtems_get_processor_count(); |
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259 | |
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260 | for (worker_index = 1; worker_index < cpu_count; ++worker_index) { |
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261 | rtems_id worker_id; |
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262 | |
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263 | sc = rtems_task_create( |
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264 | rtems_build_name('W', 'R', 'K', '0'+worker_index), |
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265 | WORKER_PRIORITY, |
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266 | RTEMS_MINIMUM_STACK_SIZE, |
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267 | RTEMS_DEFAULT_MODES, |
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268 | RTEMS_DEFAULT_ATTRIBUTES, |
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269 | &worker_id |
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270 | ); |
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271 | rtems_test_assert( sc == RTEMS_SUCCESSFUL ); |
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272 | |
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273 | sc = rtems_task_start( worker_id, worker_task, 0 ); |
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274 | rtems_test_assert( sc == RTEMS_SUCCESSFUL ); |
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275 | } |
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276 | |
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277 | all_tests(); |
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278 | } |
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279 | |
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280 | |
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281 | static void Init(rtems_task_argument arg) |
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282 | { |
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283 | TEST_BEGIN(); |
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284 | |
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285 | test_smp_cache_manager(); |
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286 | |
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287 | TEST_END(); |
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288 | rtems_test_exit(0); |
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289 | } |
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290 | |
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291 | static void fatal_extension( |
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292 | rtems_fatal_source source, |
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293 | bool always_set_to_false, |
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294 | rtems_fatal_code error |
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295 | ) |
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296 | { |
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297 | uint32_t self = rtems_get_current_processor(); |
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298 | |
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299 | if (source == RTEMS_FATAL_SOURCE_EXCEPTION && ctx.do_longjmp[self]) { |
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300 | _ISR_Set_level(0); |
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301 | longjmp(ctx.instruction_invalidate_return_context[self], 1); |
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302 | } |
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303 | } |
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304 | |
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305 | #define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER |
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306 | #define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER |
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307 | |
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308 | #define CONFIGURE_MAXIMUM_PROCESSORS CPU_COUNT |
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309 | |
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310 | #define CONFIGURE_MAXIMUM_TASKS CPU_COUNT |
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311 | |
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312 | #define CONFIGURE_MAXIMUM_TIMERS 1 |
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313 | |
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314 | #define CONFIGURE_INITIAL_EXTENSIONS \ |
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315 | { .fatal = fatal_extension }, \ |
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316 | RTEMS_TEST_INITIAL_EXTENSION |
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317 | |
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318 | #define CONFIGURE_RTEMS_INIT_TASKS_TABLE |
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319 | |
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320 | #define CONFIGURE_INIT |
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321 | |
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322 | #include <rtems/confdefs.h> |
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