1 | /////////////////////////////////////////////////////////////////////////////////// |
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2 | // File : nic_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 <giet_config.h> |
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9 | #include <nic_driver.h> |
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10 | #include <cma_driver.h> |
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11 | #include <utils.h> |
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12 | #include <ctx_handler.h> |
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13 | #include <vmem.h> |
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14 | |
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15 | #if !defined(GIET_USE_IOMMU) |
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16 | # error: You must define GIET_USE_IOMMU in the giet_config.h file |
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17 | #endif |
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18 | |
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19 | #if !defined(SEG_NIC_BASE) |
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20 | # error: You must define SEG_NIC_BASE in the hard_config.h file |
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21 | #endif |
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22 | |
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23 | #if !defined(NB_NIC_CHANNELS) |
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24 | # error: You must define NB_NIC_CHANNELS in the hard_config.h file |
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25 | #endif |
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26 | |
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27 | #if !defined(X_IO) |
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28 | # error: You must define X_IO in the hard_config.h file |
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29 | #endif |
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30 | |
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31 | #if !defined(Y_IO) |
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32 | # error: You must define Y_IO in the hard_config.h file |
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33 | #endif |
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34 | |
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35 | #if ( NB_NIC_CHANNELS > 8 ) |
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36 | # error: NB_NIC_CHANNELS cannot be larger than 8 |
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37 | #endif |
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38 | |
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39 | #if !defined(NB_CMA_CHANNELS) |
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40 | # error: You must define NB_CMA_CHANNELS in the hard_config.h file |
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41 | #endif |
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42 | |
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43 | #if ( NB_CMA_CHANNELS > 8 ) |
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44 | # error: NB_CMA_CHANNELS cannot be larger than 8 |
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45 | #endif |
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46 | |
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47 | #if !defined( USE_IOB ) |
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48 | # error: You must define USE_IOB in the hard_config.h file |
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49 | #endif |
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50 | |
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51 | #if !defined( GIET_NIC_CHBUF_NBUFS ) |
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52 | # error: You must define GIET_NIC_CHBUF_NBUFS in the giet_config.h file |
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53 | #endif |
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54 | |
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55 | #if !defined( GIET_NIC_CHBUF_SIZE ) |
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56 | # error: You must define GIET_NIC_CHBUF_SIZE in the giet_config.h file |
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57 | #endif |
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58 | |
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59 | #if !defined( GIET_NIC_CHBUF_TIMEOUT ) |
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60 | # error: You must define GIET_NIC_CHBUF_TIMEOUT in the giet_config.h file |
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61 | #endif |
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62 | |
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63 | #define in_unckdata __attribute__((section (".unckdata"))) |
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64 | |
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65 | /////////////////////////////////////////////////////////////////////////////// |
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66 | // This low_level function returns the value contained in a channel register. |
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67 | /////////////////////////////////////////////////////////////////////////////// |
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68 | unsigned int _nic_get_channel_register( unsigned int channel, |
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69 | unsigned int index ) |
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70 | { |
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71 | unsigned int* vaddr = (unsigned int*)SEG_NIC_BASE + |
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72 | NIC_CHANNEL_SPAN * channel + index; |
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73 | return _io_extended_read( vaddr ); |
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74 | } |
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75 | |
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76 | /////////////////////////////////////////////////////////////////////////////// |
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77 | // This low-level function set a new value in a channel register. |
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78 | /////////////////////////////////////////////////////////////////////////////// |
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79 | void _nic_set_channel_register( unsigned int channel, |
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80 | unsigned int index, |
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81 | unsigned int value ) |
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82 | { |
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83 | unsigned int* vaddr = (unsigned int*)SEG_NIC_BASE + |
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84 | NIC_CHANNEL_SPAN * channel + index; |
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85 | _io_extended_write( vaddr, value ); |
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86 | } |
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87 | |
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88 | /////////////////////////////////////////////////////////////////////////////// |
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89 | // This low_level function returns the value contained in a global register. |
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90 | /////////////////////////////////////////////////////////////////////////////// |
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91 | unsigned int _nic_get_global_register( unsigned int index ) |
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92 | { |
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93 | unsigned int* vaddr = (unsigned int*)SEG_NIC_BASE + |
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94 | NIC_CHANNEL_SPAN * NB_NIC_CHANNELS + index; |
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95 | return _io_extended_read( vaddr ); |
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96 | } |
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97 | |
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98 | /////////////////////////////////////////////////////////////////////////////// |
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99 | // This low-level function set a new value in a global register. |
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100 | /////////////////////////////////////////////////////////////////////////////// |
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101 | void _nic_set_global_register( unsigned int index, |
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102 | unsigned int value ) |
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103 | { |
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104 | unsigned int* vaddr = (unsigned int*)SEG_NIC_BASE + |
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105 | NIC_CHANNEL_SPAN * NB_NIC_CHANNELS + index; |
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106 | _io_extended_write( vaddr, value ); |
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107 | } |
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108 | |
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109 | //////////////////////////////////////////// |
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110 | int _nic_global_init( unsigned int channels, |
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111 | unsigned int vis, |
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112 | unsigned int bc_enable, |
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113 | unsigned int bypass_enable ) |
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114 | { |
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115 | _nic_set_global_register( NIC_G_VIS , vis ); |
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116 | _nic_set_global_register( NIC_G_NB_CHAN , channels ); |
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117 | _nic_set_global_register( NIC_G_BC_ENABLE , bc_enable ); |
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118 | _nic_set_global_register( NIC_G_BYPASS_ENABLE, bypass_enable ); |
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119 | _nic_set_global_register( NIC_G_ON , 1 ); |
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120 | |
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121 | return 0; |
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122 | } |
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123 | |
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124 | //////////////////////////////////////////// |
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125 | int _nic_channel_start( unsigned int channel, |
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126 | unsigned int is_rx, |
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127 | unsigned int mac4, |
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128 | unsigned int mac2 ) |
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129 | { |
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130 | unsigned int base = SEG_NIC_BASE; |
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131 | unsigned int extend = (X_IO << Y_WIDTH) + Y_IO; |
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132 | |
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133 | if ( is_rx ) |
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134 | { |
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135 | _nic_set_channel_register( channel, NIC_RX_DESC_LO_0 + 4096, base ); |
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136 | _nic_set_channel_register( channel, NIC_RX_DESC_LO_1 + 4096, base + 0x1000 ); |
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137 | _nic_set_channel_register( channel, NIC_RX_DESC_HI_0 , extend ); |
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138 | _nic_set_channel_register( channel, NIC_RX_DESC_HI_1 , extend ); |
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139 | _nic_set_channel_register( channel, NIC_RX_RUN , 1 ); |
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140 | } |
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141 | else |
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142 | { |
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143 | _nic_set_channel_register( channel, NIC_TX_DESC_LO_0 + 4096, base + 0x2000 ); |
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144 | _nic_set_channel_register( channel, NIC_TX_DESC_LO_1 + 4096, base + 0x3000 ); |
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145 | _nic_set_channel_register( channel, NIC_TX_DESC_HI_0 , extend ); |
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146 | _nic_set_channel_register( channel, NIC_TX_DESC_HI_1 , extend ); |
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147 | _nic_set_channel_register( channel, NIC_TX_RUN , 1 ); |
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148 | } |
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149 | |
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150 | _nic_set_channel_register( channel, NIC_MAC_4 , mac4 ); |
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151 | _nic_set_channel_register( channel, NIC_MAC_2 , mac2 ); |
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152 | |
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153 | return 0; |
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154 | } |
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155 | |
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156 | //////////////////////////////////////////// |
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157 | int _nic_channel_stop( unsigned int channel, |
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158 | unsigned int is_rx ) |
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159 | { |
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160 | if ( is_rx ) _nic_set_channel_register( channel, NIC_RX_RUN, 0 ); |
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161 | else _nic_set_channel_register( channel, NIC_TX_RUN, 0 ); |
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162 | |
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163 | return 0; |
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164 | } |
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165 | |
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166 | |
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167 | |
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168 | //////////////////////////////////////////////////////////////////////////////////////////// |
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169 | // Interrupt Service Routines |
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170 | //////////////////////////////////////////////////////////////////////////////////////////// |
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171 | |
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172 | //////////////////////////////////////// |
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173 | void _nic_rx_isr( unsigned int irq_type, |
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174 | unsigned int irq_id, |
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175 | unsigned int channel ) |
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176 | { |
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177 | _puts("[NIC WARNING] RX buffers are full for NIC channel "); |
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178 | _putd( channel ); |
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179 | _puts("\n"); |
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180 | } |
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181 | |
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182 | //////////////////////////////////////// |
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183 | void _nic_tx_isr( unsigned int irq_type, |
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184 | unsigned int irq_id, |
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185 | unsigned int channel ) |
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186 | { |
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187 | _puts("[NIC WARNING] TX buffers are full for NIC channel "); |
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188 | _putd( channel ); |
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189 | _puts("\n"); |
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190 | } |
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191 | |
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192 | // Local Variables: |
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193 | // tab-width: 4 |
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194 | // c-basic-offset: 4 |
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195 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
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196 | // indent-tabs-mode: nil |
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197 | // End: |
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198 | // vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
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199 | |
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