1 | /////////////////////////////////////////////////////////////////////////////////// |
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2 | // File : xcu_driver.c |
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3 | // Date : 23/05/2013 |
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4 | // Author : alain greiner |
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5 | // Copyright (c) UPMC-LIP6 |
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6 | /////////////////////////////////////////////////////////////////////////////////// |
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7 | |
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8 | #include <hard_config.h> |
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9 | #include <giet_config.h> |
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10 | #include <xcu_driver.h> |
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11 | #include <tty0.h> |
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12 | #include <mapping_info.h> |
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13 | #include <utils.h> |
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14 | #include <io.h> |
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15 | |
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16 | #if !defined(X_SIZE) |
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17 | # error: You must define X_SIZE in the hard_config.h file |
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18 | #endif |
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19 | |
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20 | #if !defined(Y_SIZE) |
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21 | # error: You must define X_SIZE in the hard_config.h file |
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22 | #endif |
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23 | |
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24 | #if !defined(X_WIDTH) |
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25 | # error: You must define X_WIDTH in the hard_config.h file |
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26 | #endif |
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27 | |
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28 | #if !defined(Y_WIDTH) |
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29 | # error: You must define X_WIDTH in the hard_config.h file |
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30 | #endif |
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31 | |
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32 | #if !defined(NB_PROCS_MAX) |
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33 | # error: You must define NB_PROCS_MAX in the hard_config.h file |
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34 | #endif |
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35 | |
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36 | #if !defined( USE_XCU ) |
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37 | # error: You must define USE_XCU in the hard_config.h file |
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38 | #endif |
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39 | |
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40 | #if !defined( SEG_XCU_BASE ) |
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41 | # error: You must define SEG_XCU_BASE in the hard_config.h file |
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42 | #endif |
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43 | |
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44 | #if !defined( PERI_CLUSTER_INCREMENT ) |
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45 | # error: You must define PERI_CLUSTER_INCREMENT in the hard_config.h file |
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46 | #endif |
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47 | |
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48 | /////////////////////////////////////////////////////////////////////////////// |
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49 | // This low level function returns the value contained in register "index" |
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50 | // in the XCU component contained in cluster "cluster_xy" |
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51 | /////////////////////////////////////////////////////////////////////////////// |
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52 | static |
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53 | unsigned int _xcu_get_register( unsigned int cluster_xy, // cluster index |
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54 | unsigned int func, // function index |
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55 | unsigned int index ) // register index |
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56 | { |
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57 | unsigned int vaddr = |
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58 | SEG_XCU_BASE + |
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59 | (cluster_xy * PERI_CLUSTER_INCREMENT) + |
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60 | (XCU_REG(func, index) << 2); |
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61 | |
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62 | return ioread32( (void*)vaddr ); |
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63 | } |
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64 | |
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65 | /////////////////////////////////////////////////////////////////////////////// |
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66 | // This low level function sets a new value in register "index" |
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67 | // in the XCU component contained in cluster "cluster_xy" |
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68 | /////////////////////////////////////////////////////////////////////////////// |
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69 | static |
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70 | void _xcu_set_register( unsigned int cluster_xy, // cluster index |
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71 | unsigned int func, // func index |
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72 | unsigned int index, // register index |
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73 | unsigned int value ) // value to be written |
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74 | { |
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75 | unsigned int vaddr = |
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76 | SEG_XCU_BASE + |
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77 | (cluster_xy * PERI_CLUSTER_INCREMENT) + |
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78 | (XCU_REG(func, index) << 2); |
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79 | |
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80 | iowrite32( (void*)vaddr, value ); |
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81 | } |
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82 | |
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83 | //////////////////////////////////////////// |
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84 | void _xcu_set_mask( unsigned int cluster_xy, |
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85 | unsigned int channel, |
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86 | unsigned int value, |
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87 | unsigned int irq_type ) |
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88 | { |
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89 | // parameters checking |
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90 | unsigned int x = cluster_xy >> Y_WIDTH; |
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91 | unsigned int y = cluster_xy & ((1<<Y_WIDTH)-1); |
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92 | if (x >= X_SIZE) _exit(); |
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93 | if (y >= Y_SIZE) _exit(); |
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94 | if (channel >= (NB_PROCS_MAX * IRQ_PER_PROCESSOR)) _exit(); |
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95 | |
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96 | unsigned int func = 0; |
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97 | if (irq_type == IRQ_TYPE_PTI) func = XCU_MSK_PTI_ENABLE; |
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98 | else if (irq_type == IRQ_TYPE_WTI) func = XCU_MSK_WTI_ENABLE; |
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99 | else if (irq_type == IRQ_TYPE_HWI) func = XCU_MSK_HWI_ENABLE; |
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100 | else |
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101 | { |
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102 | _printf("[GIET ERROR] _xcu_set_mask() receives illegal IRQ type\n"); |
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103 | _exit(); |
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104 | } |
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105 | |
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106 | _xcu_set_register(cluster_xy, func, channel, value); |
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107 | } |
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108 | |
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109 | ///////////////////////////////////////////// |
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110 | void _xcu_get_index( unsigned int cluster_xy, |
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111 | unsigned int channel, |
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112 | unsigned int * index, |
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113 | unsigned int * irq_type ) |
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114 | { |
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115 | // parameters checking |
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116 | unsigned int x = cluster_xy >> Y_WIDTH; |
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117 | unsigned int y = cluster_xy & ((1<<Y_WIDTH)-1); |
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118 | if (x >= X_SIZE) _exit(); |
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119 | if (y >= Y_SIZE) _exit(); |
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120 | if (channel >= (NB_PROCS_MAX * IRQ_PER_PROCESSOR)) _exit(); |
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121 | |
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122 | unsigned int prio = _xcu_get_register(cluster_xy, XCU_PRIO, channel); |
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123 | unsigned int pti_ok = (prio & 0x00000001); |
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124 | unsigned int hwi_ok = (prio & 0x00000002); |
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125 | unsigned int wti_ok = (prio & 0x00000004); |
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126 | unsigned int pti_id = (prio & 0x00001F00) >> 8; |
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127 | unsigned int hwi_id = (prio & 0x001F0000) >> 16; |
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128 | unsigned int wti_id = (prio & 0x1F000000) >> 24; |
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129 | if (pti_ok) |
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130 | { |
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131 | *index = pti_id; |
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132 | *irq_type = IRQ_TYPE_PTI; |
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133 | } |
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134 | else if (hwi_ok) |
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135 | { |
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136 | *index = hwi_id; |
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137 | *irq_type = IRQ_TYPE_HWI; |
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138 | } |
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139 | else if (wti_ok) |
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140 | { |
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141 | *index = wti_id; |
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142 | *irq_type = IRQ_TYPE_WTI; |
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143 | } |
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144 | else |
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145 | { |
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146 | *index = 32; |
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147 | } |
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148 | } |
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149 | |
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150 | //////////////////////////////////////////// |
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151 | void _xcu_send_wti( unsigned int cluster_xy, |
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152 | unsigned int wti_index, |
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153 | unsigned int wdata ) |
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154 | { |
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155 | // parameters checking |
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156 | unsigned int x = cluster_xy >> Y_WIDTH; |
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157 | unsigned int y = cluster_xy & ((1<<Y_WIDTH)-1); |
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158 | if (x >= X_SIZE) _exit(); |
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159 | if (y >= Y_SIZE) _exit(); |
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160 | if (wti_index >= 32) _exit(); |
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161 | |
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162 | _xcu_set_register(cluster_xy, XCU_WTI_REG, wti_index, wdata); |
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163 | } |
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164 | |
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165 | //////////////////////////////////////////// |
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166 | void _xcu_send_wti_paddr( unsigned int cluster_xy, |
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167 | unsigned int wti_index, |
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168 | unsigned int wdata ) |
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169 | { |
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170 | // parameters checking |
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171 | unsigned int x = cluster_xy >> Y_WIDTH; |
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172 | unsigned int y = cluster_xy & ((1<<Y_WIDTH)-1); |
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173 | if (x >= X_SIZE) _exit(); |
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174 | if (y >= Y_SIZE) _exit(); |
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175 | if (wti_index >= 32) _exit(); |
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176 | |
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177 | paddr_t paddr = |
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178 | SEG_XCU_BASE + ((paddr_t)cluster_xy << 32) + |
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179 | (XCU_REG(XCU_WTI_REG, wti_index) << 2); |
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180 | |
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181 | _physical_write(paddr, wdata); |
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182 | } |
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183 | |
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184 | /////////////////////////////////////////////////// |
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185 | void _xcu_get_wti_value( unsigned int cluster_xy, |
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186 | unsigned int wti_index, |
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187 | unsigned int * value ) |
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188 | { |
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189 | // parameters checking |
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190 | unsigned int x = cluster_xy >> Y_WIDTH; |
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191 | unsigned int y = cluster_xy & ((1<<Y_WIDTH)-1); |
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192 | if (x >= X_SIZE) _exit(); |
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193 | if (y >= Y_SIZE) _exit(); |
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194 | if (wti_index >= 32) _exit(); |
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195 | |
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196 | *value = _xcu_get_register(cluster_xy, XCU_WTI_REG, wti_index); |
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197 | } |
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198 | |
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199 | //////////////////////////////////////////////////// |
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200 | void _xcu_get_wti_address( unsigned int wti_index, |
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201 | unsigned int * address ) |
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202 | { |
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203 | if (wti_index >= 32) _exit(); |
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204 | |
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205 | *address = SEG_XCU_BASE + (XCU_REG(XCU_WTI_REG, wti_index)<<2); |
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206 | } |
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207 | |
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208 | /////////////////////////////////////////////// |
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209 | void _xcu_timer_start( unsigned int cluster_xy, |
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210 | unsigned int pti_index, |
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211 | unsigned int period ) |
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212 | { |
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213 | // parameters checking |
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214 | unsigned int x = cluster_xy >> Y_WIDTH; |
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215 | unsigned int y = cluster_xy & ((1<<Y_WIDTH)-1); |
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216 | if (x >= X_SIZE) _exit(); |
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217 | if (y >= Y_SIZE) _exit(); |
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218 | |
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219 | _xcu_set_register(cluster_xy, XCU_PTI_PER, pti_index, period); |
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220 | } |
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221 | |
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222 | ////////////////////////////////////////////// |
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223 | void _xcu_timer_stop( unsigned int cluster_xy, |
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224 | unsigned int pti_index) |
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225 | { |
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226 | // parameters checking |
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227 | unsigned int x = cluster_xy >> Y_WIDTH; |
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228 | unsigned int y = cluster_xy & ((1<<Y_WIDTH)-1); |
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229 | if (x >= X_SIZE) _exit(); |
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230 | if (y >= Y_SIZE) _exit(); |
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231 | |
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232 | _xcu_set_register(cluster_xy, XCU_PTI_PER, pti_index, 0); |
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233 | } |
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234 | |
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235 | /////////////////////////////////////////////////////////// |
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236 | void _xcu_timer_reset_irq( unsigned int cluster_xy, |
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237 | unsigned int pti_index ) |
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238 | { |
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239 | // parameters checking |
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240 | unsigned int x = cluster_xy >> Y_WIDTH; |
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241 | unsigned int y = cluster_xy & ((1<<Y_WIDTH)-1); |
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242 | if (x >= X_SIZE) _exit(); |
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243 | if (y >= Y_SIZE) _exit(); |
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244 | |
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245 | // This return value is not used / avoid a compilation warning. |
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246 | x = _xcu_get_register(cluster_xy, XCU_PTI_ACK, pti_index); |
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247 | } |
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248 | |
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249 | /////////////////////////////////////////////////// |
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250 | void _xcu_timer_reset_cpt( unsigned int cluster_xy, |
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251 | unsigned int pti_index ) |
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252 | { |
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253 | // parameters checking |
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254 | unsigned int x = cluster_xy >> Y_WIDTH; |
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255 | unsigned int y = cluster_xy & ((1<<Y_WIDTH)-1); |
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256 | if (x >= X_SIZE) _exit(); |
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257 | if (y >= Y_SIZE) _exit(); |
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258 | |
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259 | unsigned int per = _xcu_get_register(cluster_xy, XCU_PTI_PER, pti_index); |
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260 | |
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261 | // we write 0 first because if the timer is currently running, |
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262 | // the corresponding timer counter is not reset |
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263 | _xcu_set_register(cluster_xy, XCU_PTI_PER, pti_index, 0); |
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264 | _xcu_set_register(cluster_xy, XCU_PTI_PER, pti_index, per); |
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265 | } |
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266 | |
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267 | |
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268 | // Local Variables: |
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269 | // tab-width: 4 |
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270 | // c-basic-offset: 4 |
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271 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
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272 | // indent-tabs-mode: nil |
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273 | // End: |
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274 | // vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
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275 | |
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