1 | /* |
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2 | * COPYRIGHT (c) 2014 Hesham ALMatary <heshamelmatary@gmail.com> |
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3 | * |
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4 | * COPYRIGHT (c) 1989-2006 |
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5 | * On-Line Applications Research Corporation (OAR). |
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6 | * |
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7 | * The license and distribution terms for this file may be |
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8 | * found in the file LICENSE in this distribution or at |
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9 | * http://www.rtems.org/license/LICENSE. |
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10 | */ |
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11 | |
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12 | #include <rtems/score/cpu.h> |
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13 | #include <rtems/score/interr.h> |
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14 | #include <rtems/score/or1k-utility.h> |
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15 | #include <libcpu/cache.h> |
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16 | |
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17 | static inline void _CPU_OR1K_Cache_enable_data(void) |
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18 | { |
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19 | uint32_t sr; |
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20 | ISR_Level level; |
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21 | |
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22 | _ISR_Disable (level); |
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23 | sr = _OR1K_mfspr(CPU_OR1K_SPR_SR); |
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24 | _OR1K_mtspr(CPU_OR1K_SPR_SR, sr | CPU_OR1K_SPR_SR_DCE); |
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25 | |
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26 | _ISR_Enable(level); |
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27 | } |
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28 | |
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29 | static inline void _CPU_OR1K_Cache_disable_data(void) |
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30 | { |
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31 | uint32_t sr; |
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32 | ISR_Level level; |
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33 | |
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34 | _ISR_Disable (level); |
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35 | |
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36 | sr = _OR1K_mfspr(CPU_OR1K_SPR_SR); |
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37 | _OR1K_mtspr(CPU_OR1K_SPR_SR, (sr & ~CPU_OR1K_SPR_SR_DCE)); |
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38 | |
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39 | _ISR_Enable(level); |
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40 | } |
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41 | |
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42 | static inline void _CPU_OR1K_Cache_enable_instruction(void) |
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43 | { |
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44 | uint32_t sr; |
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45 | ISR_Level level; |
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46 | |
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47 | _ISR_Disable (level); |
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48 | |
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49 | sr = _OR1K_mfspr(CPU_OR1K_SPR_SR); |
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50 | _OR1K_mtspr(CPU_OR1K_SPR_SR, sr | CPU_OR1K_SPR_SR_ICE); |
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51 | |
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52 | _ISR_Enable(level); |
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53 | } |
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54 | |
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55 | static inline void _CPU_OR1K_Cache_disable_instruction(void) |
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56 | { |
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57 | uint32_t sr; |
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58 | ISR_Level level; |
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59 | |
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60 | _ISR_Disable (level); |
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61 | |
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62 | sr = _OR1K_mfspr(CPU_OR1K_SPR_SR); |
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63 | _OR1K_mtspr(CPU_OR1K_SPR_SR, (sr & ~CPU_OR1K_SPR_SR_ICE)); |
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64 | |
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65 | _ISR_Enable(level); |
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66 | } |
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67 | |
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68 | static inline void _CPU_OR1K_Cache_data_block_prefetch(const void *d_addr) |
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69 | { |
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70 | ISR_Level level; |
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71 | |
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72 | _ISR_Disable (level); |
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73 | |
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74 | _OR1K_mtspr(CPU_OR1K_SPR_DCBPR, (uintptr_t) d_addr); |
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75 | |
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76 | _ISR_Enable(level); |
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77 | } |
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78 | |
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79 | static inline void _CPU_OR1K_Cache_data_block_flush(const void *d_addr) |
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80 | { |
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81 | ISR_Level level; |
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82 | _ISR_Disable (level); |
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83 | |
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84 | _OR1K_mtspr(CPU_OR1K_SPR_DCBFR, (uintptr_t) d_addr); |
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85 | |
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86 | _ISR_Enable(level); |
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87 | } |
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88 | |
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89 | static inline void _CPU_OR1K_Cache_data_block_invalidate(const void *d_addr) |
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90 | { |
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91 | ISR_Level level; |
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92 | _ISR_Disable (level); |
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93 | |
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94 | _OR1K_mtspr(CPU_OR1K_SPR_DCBIR, (uintptr_t) d_addr); |
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95 | |
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96 | _ISR_Enable(level); |
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97 | } |
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98 | |
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99 | static inline void _CPU_OR1K_Cache_data_block_writeback(const void *d_addr) |
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100 | { |
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101 | ISR_Level level; |
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102 | _ISR_Disable (level); |
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103 | |
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104 | _OR1K_mtspr(CPU_OR1K_SPR_DCBWR, (uintptr_t) d_addr); |
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105 | |
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106 | _ISR_Enable(level); |
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107 | } |
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108 | |
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109 | static inline void _CPU_OR1K_Cache_data_block_lock(const void *d_addr) |
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110 | { |
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111 | ISR_Level level; |
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112 | _ISR_Disable (level); |
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113 | |
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114 | _OR1K_mtspr(CPU_OR1K_SPR_DCBLR, (uintptr_t) d_addr); |
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115 | |
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116 | _ISR_Enable(level); |
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117 | } |
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118 | |
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119 | static inline void _CPU_OR1K_Cache_instruction_block_prefetch |
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120 | (const void *d_addr) |
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121 | { |
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122 | ISR_Level level; |
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123 | _ISR_Disable (level); |
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124 | |
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125 | _OR1K_mtspr(CPU_OR1K_SPR_ICBPR, (uintptr_t) d_addr); |
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126 | |
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127 | _ISR_Enable(level); |
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128 | } |
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129 | |
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130 | static inline void _CPU_OR1K_Cache_instruction_block_invalidate |
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131 | (const void *d_addr) |
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132 | { |
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133 | ISR_Level level; |
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134 | _ISR_Disable (level); |
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135 | |
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136 | _OR1K_mtspr(CPU_OR1K_SPR_ICBIR, (uintptr_t) d_addr); |
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137 | |
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138 | _ISR_Enable(level); |
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139 | } |
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140 | |
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141 | static inline void _CPU_OR1K_Cache_instruction_block_lock |
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142 | (const void *d_addr) |
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143 | { |
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144 | ISR_Level level; |
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145 | _ISR_Disable (level); |
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146 | |
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147 | _OR1K_mtspr(CPU_OR1K_SPR_ICBLR, (uintptr_t) d_addr); |
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148 | |
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149 | _ISR_Enable(level); |
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150 | } |
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151 | |
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152 | /* Implement RTEMS cache manager functions */ |
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153 | |
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154 | void _CPU_cache_flush_1_data_line(const void *d_addr) |
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155 | { |
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156 | ISR_Level level; |
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157 | _ISR_Disable (level); |
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158 | |
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159 | _CPU_OR1K_Cache_data_block_flush(d_addr); |
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160 | |
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161 | //asm volatile("l.csync"); |
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162 | |
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163 | _ISR_Enable(level); |
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164 | } |
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165 | |
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166 | void _CPU_cache_invalidate_1_data_line(const void *d_addr) |
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167 | { |
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168 | ISR_Level level; |
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169 | _ISR_Disable (level); |
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170 | |
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171 | _CPU_OR1K_Cache_data_block_invalidate(d_addr); |
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172 | |
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173 | _ISR_Enable(level); |
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174 | } |
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175 | |
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176 | void _CPU_cache_freeze_data(void) |
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177 | { |
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178 | /* Do nothing */ |
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179 | } |
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180 | |
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181 | void _CPU_cache_unfreeze_data(void) |
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182 | { |
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183 | /* Do nothing */ |
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184 | } |
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185 | |
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186 | void _CPU_cache_invalidate_1_instruction_line(const void *d_addr) |
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187 | { |
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188 | ISR_Level level; |
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189 | _ISR_Disable (level); |
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190 | |
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191 | _CPU_OR1K_Cache_instruction_block_invalidate(d_addr); |
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192 | |
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193 | _ISR_Enable(level); |
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194 | } |
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195 | |
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196 | void _CPU_cache_freeze_instruction(void) |
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197 | { |
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198 | /* Do nothing */ |
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199 | } |
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200 | |
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201 | void _CPU_cache_unfreeze_instruction(void) |
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202 | { |
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203 | /* Do nothing */ |
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204 | } |
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205 | |
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206 | void _CPU_cache_flush_entire_data(void) |
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207 | { |
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208 | |
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209 | } |
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210 | |
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211 | void _CPU_cache_invalidate_entire_data(void) |
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212 | { |
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213 | |
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214 | } |
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215 | |
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216 | void _CPU_cache_invalidate_entire_instruction(void) |
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217 | { |
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218 | |
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219 | } |
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220 | |
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221 | void _CPU_cache_enable_data(void) |
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222 | { |
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223 | _CPU_OR1K_Cache_enable_data(); |
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224 | } |
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225 | |
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226 | void _CPU_cache_disable_data(void) |
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227 | { |
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228 | _CPU_OR1K_Cache_disable_data(); |
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229 | |
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230 | } |
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231 | |
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232 | void _CPU_cache_enable_instruction(void) |
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233 | { |
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234 | |
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235 | _CPU_OR1K_Cache_enable_instruction(); |
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236 | } |
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237 | |
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238 | void _CPU_cache_disable_instruction(void) |
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239 | { |
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240 | _CPU_OR1K_Cache_disable_instruction(); |
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241 | } |
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