Mercurial > flash_v2
annotate packages/hal/common/current/tests/cache.c @ 66:bf00f99aec69 ecos-sw-2000-02-02
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| author | jlarmour |
|---|---|
| date | Wed, 02 Feb 2000 19:57:02 +0000 |
| parents | c38311975d4f |
| children | ac086aa3217e |
| rev | line source |
|---|---|
| 0 | 1 /*================================================================= |
| 2 // | |
| 3 // cache.c | |
| 4 // | |
| 5 // HAL Cache timing test | |
| 6 // | |
| 7 //========================================================================== | |
| 8 //####COPYRIGHTBEGIN#### | |
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9 // |
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10 // ------------------------------------------- |
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11 // The contents of this file are subject to the Red Hat eCos Public License |
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12 // Version 1.1 (the "License"); you may not use this file except in |
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13 // compliance with the License. You may obtain a copy of the License at |
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14 // http://www.redhat.com/ |
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15 // |
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16 // Software distributed under the License is distributed on an "AS IS" |
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the |
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18 // License for the specific language governing rights and limitations under |
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19 // the License. |
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20 // |
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21 // The Original Code is eCos - Embedded Configurable Operating System, |
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22 // released September 30, 1998. |
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23 // |
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24 // The Initial Developer of the Original Code is Red Hat. |
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25 // Portions created by Red Hat are |
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc. |
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27 // All Rights Reserved. |
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28 // ------------------------------------------- |
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29 // |
| 0 | 30 //####COPYRIGHTEND#### |
| 31 //========================================================================== | |
| 32 //#####DESCRIPTIONBEGIN#### | |
| 33 // | |
| 34 // Author(s): dsm | |
| 35 // Contributors: dsm, nickg | |
| 36 // Date: 1998-06-18 | |
| 37 //####DESCRIPTIONEND#### | |
| 38 */ | |
| 39 | |
| 40 #include <pkgconf/hal.h> | |
| 41 | |
| 42 #include <cyg/infra/testcase.h> | |
| 43 | |
| 44 #include <cyg/hal/hal_cache.h> | |
| 2 | 45 #include <cyg/hal/hal_intr.h> |
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46 #include <cyg/infra/diag.h> |
| 2 | 47 |
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48 #if (HAL_DCACHE_SIZE > 0) |
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49 |
| 2 | 50 // ------------------------------------------------------------------------- |
| 51 // If the HAL does not supply this, we supply our own version | |
| 52 | |
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53 #ifdef HAL_DCACHE_SYNC |
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54 |
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55 # define HAL_DCACHE_PURGE_ALL() HAL_DCACHE_SYNC() |
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56 |
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57 #else |
| 2 | 58 |
| 59 static cyg_uint8 dca[HAL_DCACHE_SIZE + HAL_DCACHE_LINE_SIZE*2]; | |
| 60 | |
| 61 #define HAL_DCACHE_PURGE_ALL() \ | |
| 62 CYG_MACRO_START \ | |
| 63 volatile cyg_uint8 *addr = &dca[HAL_DCACHE_LINE_SIZE]; \ | |
| 64 volatile cyg_uint8 tmp = 0; \ | |
| 65 int i; \ | |
| 66 for( i = 0; i < HAL_DCACHE_SIZE; i += HAL_DCACHE_LINE_SIZE ) \ | |
| 67 { \ | |
| 68 tmp = addr[i]; \ | |
| 69 } \ | |
| 70 CYG_MACRO_END | |
| 71 | |
| 72 #endif | |
| 0 | 73 |
| 74 // ------------------------------------------------------------------------- | |
| 75 | |
| 2 | 76 #ifndef MAX_STRIDE |
| 77 #define MAX_STRIDE 64 | |
| 78 #endif | |
| 79 | |
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80 volatile char m[(HAL_DCACHE_SIZE/HAL_DCACHE_LINE_SIZE)*MAX_STRIDE]; |
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81 |
| 0 | 82 // ------------------------------------------------------------------------- |
| 83 | |
| 84 static void time0(register cyg_uint32 stride) | |
| 85 { | |
| 86 register cyg_uint32 j,k; | |
| 87 register char c; | |
| 88 | |
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89 diag_printf("stride=%d\n", stride); |
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90 |
| 2 | 91 k = 0; |
| 92 if ( cyg_test_is_simulator ) | |
| 93 k = 3960; | |
| 0 | 94 |
| 2 | 95 for(; k<4000;k++) { |
| 0 | 96 for(j=0; j<(HAL_DCACHE_SIZE/HAL_DCACHE_LINE_SIZE); j++) { |
| 97 c=m[stride*j]; | |
| 98 } | |
| 99 } | |
| 100 } | |
| 101 | |
| 102 // ------------------------------------------------------------------------- | |
| 103 | |
| 104 void time1(void) | |
| 105 { | |
| 106 cyg_uint32 i; | |
| 107 | |
| 2 | 108 for(i=1; i<=MAX_STRIDE; i+=i) { |
| 0 | 109 time0(i); |
| 110 } | |
| 111 } | |
| 112 | |
| 113 // ------------------------------------------------------------------------- | |
| 114 // This test could be improved by counting number of passes possible | |
| 115 // in a given number of ticks. | |
| 116 | |
| 117 static void entry0( void ) | |
| 118 { | |
| 2 | 119 register CYG_INTERRUPT_STATE oldints; |
| 120 | |
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121 #ifdef HAL_CACHE_UNIFIED |
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122 |
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123 HAL_DISABLE_INTERRUPTS(oldints); |
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124 HAL_DCACHE_PURGE_ALL(); // rely on above definition |
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125 HAL_UCACHE_INVALIDATE_ALL(); |
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126 HAL_UCACHE_DISABLE(); |
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127 HAL_RESTORE_INTERRUPTS(oldints); |
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128 CYG_TEST_INFO("Cache off"); |
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129 time1(); |
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130 |
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131 HAL_DISABLE_INTERRUPTS(oldints); |
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132 HAL_DCACHE_PURGE_ALL(); // rely on above definition |
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133 HAL_UCACHE_INVALIDATE_ALL(); |
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134 HAL_UCACHE_ENABLE(); |
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135 HAL_RESTORE_INTERRUPTS(oldints); |
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136 CYG_TEST_INFO("Cache on"); |
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137 time1(); |
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138 |
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139 #else // HAL_CACHE_UNIFIED |
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140 |
| 2 | 141 HAL_DISABLE_INTERRUPTS(oldints); |
| 142 HAL_DCACHE_PURGE_ALL(); | |
| 0 | 143 HAL_ICACHE_INVALIDATE_ALL(); |
| 144 HAL_DCACHE_INVALIDATE_ALL(); | |
| 145 HAL_ICACHE_DISABLE(); | |
| 146 HAL_DCACHE_DISABLE(); | |
| 2 | 147 HAL_RESTORE_INTERRUPTS(oldints); |
| 0 | 148 CYG_TEST_INFO("Dcache off Icache off"); |
| 149 time1(); | |
| 150 | |
| 2 | 151 HAL_DISABLE_INTERRUPTS(oldints); |
| 152 HAL_DCACHE_PURGE_ALL(); | |
| 0 | 153 HAL_ICACHE_INVALIDATE_ALL(); |
| 154 HAL_DCACHE_INVALIDATE_ALL(); | |
| 155 HAL_ICACHE_DISABLE(); | |
| 156 HAL_DCACHE_ENABLE(); | |
| 2 | 157 HAL_RESTORE_INTERRUPTS(oldints); |
| 0 | 158 CYG_TEST_INFO("Dcache on Icache off"); |
| 159 time1(); | |
| 160 | |
| 2 | 161 HAL_DISABLE_INTERRUPTS(oldints); |
| 162 HAL_DCACHE_PURGE_ALL(); | |
| 0 | 163 HAL_ICACHE_INVALIDATE_ALL(); |
| 164 HAL_DCACHE_INVALIDATE_ALL(); | |
| 165 HAL_ICACHE_ENABLE(); | |
| 166 HAL_DCACHE_DISABLE(); | |
| 2 | 167 HAL_RESTORE_INTERRUPTS(oldints); |
| 0 | 168 CYG_TEST_INFO("Dcache off Icache on"); |
| 169 time1(); | |
| 170 | |
| 2 | 171 HAL_DISABLE_INTERRUPTS(oldints); |
| 172 HAL_DCACHE_PURGE_ALL(); | |
| 0 | 173 HAL_ICACHE_INVALIDATE_ALL(); |
| 174 HAL_DCACHE_INVALIDATE_ALL(); | |
| 175 HAL_ICACHE_ENABLE(); | |
| 176 HAL_DCACHE_ENABLE(); | |
| 2 | 177 HAL_RESTORE_INTERRUPTS(oldints); |
| 178 CYG_TEST_INFO("Dcache on Icache on"); | |
| 0 | 179 time1(); |
| 180 | |
| 2 | 181 HAL_DISABLE_INTERRUPTS(oldints); |
| 182 HAL_DCACHE_PURGE_ALL(); | |
| 0 | 183 HAL_ICACHE_INVALIDATE_ALL(); |
| 184 HAL_DCACHE_INVALIDATE_ALL(); | |
| 185 HAL_ICACHE_DISABLE(); | |
| 186 HAL_DCACHE_DISABLE(); | |
| 2 | 187 HAL_RESTORE_INTERRUPTS(oldints); |
| 0 | 188 CYG_TEST_INFO("Dcache off Icache off"); |
| 189 time1(); | |
| 190 | |
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191 #endif // HAL_CACHE_UNIFIED |
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192 |
| 0 | 193 CYG_TEST_PASS_FINISH("End of test"); |
| 194 } | |
| 195 | |
| 196 // ------------------------------------------------------------------------- | |
| 197 | |
| 198 void cache_main( void ) | |
| 199 { | |
| 200 CYG_TEST_INIT(); | |
| 201 | |
| 202 entry0(); | |
| 203 | |
| 204 } | |
| 205 | |
| 206 // ------------------------------------------------------------------------- | |
| 207 | |
| 208 externC void | |
| 209 cyg_start( void ) | |
| 210 { | |
| 211 cache_main(); | |
| 212 } | |
| 213 | |
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214 #else // (HAL_DCACHE_SIZE > 0) |
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215 #define N_A_MSG "No cache" |
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216 #endif // (HAL_DCACHE_SIZE > 0) |
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217 |
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218 #ifdef N_A_MSG |
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219 externC void |
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220 cyg_start( void ) |
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221 { |
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222 CYG_TEST_INIT(); |
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223 CYG_TEST_NA( N_A_MSG ); |
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224 } |
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225 #endif // N_A_MSG |
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226 |
| 0 | 227 // ------------------------------------------------------------------------- |
| 228 /* EOF cache.c */ |
