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 <tty0.h> |
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13 | #include <ctx_handler.h> |
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14 | #include <vmem.h> |
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15 | |
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16 | #if !defined(GIET_USE_IOMMU) |
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17 | # error: You must define GIET_USE_IOMMU in the giet_config.h file |
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18 | #endif |
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19 | |
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20 | #if !defined(SEG_NIC_BASE) |
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21 | # error: You must define SEG_NIC_BASE in the hard_config.h file |
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22 | #endif |
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23 | |
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24 | #if !defined(NB_NIC_CHANNELS) |
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25 | # error: You must define NB_NIC_CHANNELS in the hard_config.h file |
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26 | #endif |
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27 | |
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28 | #if !defined(X_IO) |
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29 | # error: You must define X_IO in the hard_config.h file |
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30 | #endif |
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31 | |
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32 | #if !defined(Y_IO) |
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33 | # error: You must define Y_IO in the hard_config.h file |
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34 | #endif |
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35 | |
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36 | #if ( NB_NIC_CHANNELS > 8 ) |
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37 | # error: NB_NIC_CHANNELS cannot be larger than 8 |
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38 | #endif |
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39 | |
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40 | #if !defined(NB_CMA_CHANNELS) |
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41 | # error: You must define NB_CMA_CHANNELS in the hard_config.h file |
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42 | #endif |
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43 | |
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44 | #if ( NB_CMA_CHANNELS > 8 ) |
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45 | # error: NB_CMA_CHANNELS cannot be larger than 8 |
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46 | #endif |
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47 | |
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48 | #if !defined( USE_IOB ) |
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49 | # error: You must define USE_IOB in the hard_config.h file |
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50 | #endif |
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51 | |
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52 | #if !defined( GIET_NIC_NBUFS ) |
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53 | # error: You must define GIET_NIC_NBUFS in the giet_config.h file |
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54 | #endif |
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55 | |
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56 | #if !defined( GIET_NIC_BUFSIZE ) |
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57 | # error: You must define GIET_NIC_BUFSIZE in the giet_config.h file |
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58 | #endif |
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59 | |
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60 | #if !defined( GIET_NIC_TIMEOUT ) |
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61 | # error: You must define GIET_NIC_TIMEOUT in the giet_config.h file |
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62 | #endif |
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63 | |
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64 | #define in_unckdata __attribute__((section (".unckdata"))) |
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65 | |
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66 | /////////////////////////////////////////////////////////////////////////////// |
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67 | // This low_level function returns the value contained in a channel register. |
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68 | /////////////////////////////////////////////////////////////////////////////// |
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69 | unsigned int _nic_get_channel_register( unsigned int channel, |
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70 | unsigned int index ) |
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71 | { |
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72 | unsigned int* vaddr = (unsigned int*)SEG_NIC_BASE + |
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73 | NIC_CHANNEL_SPAN * channel + 0x1000 + index; |
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74 | return _io_extended_read( vaddr ); |
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75 | } |
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76 | |
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77 | /////////////////////////////////////////////////////////////////////////////// |
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78 | // This low-level function set a new value in a channel register. |
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79 | /////////////////////////////////////////////////////////////////////////////// |
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80 | void _nic_set_channel_register( unsigned int channel, |
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81 | unsigned int index, |
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82 | unsigned int value ) |
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83 | { |
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84 | unsigned int* vaddr = (unsigned int*)SEG_NIC_BASE + |
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85 | NIC_CHANNEL_SPAN * channel + 0x1000 + index; |
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86 | _io_extended_write( vaddr, value ); |
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87 | } |
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88 | |
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89 | /////////////////////////////////////////////////////////////////////////////// |
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90 | // This low_level function returns the value contained in a global register. |
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91 | /////////////////////////////////////////////////////////////////////////////// |
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92 | unsigned int _nic_get_global_register( unsigned int index ) |
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93 | { |
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94 | unsigned int* vaddr = (unsigned int*)SEG_NIC_BASE + |
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95 | NIC_CHANNEL_SPAN * 8 + index; |
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96 | return _io_extended_read( vaddr ); |
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97 | } |
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98 | |
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99 | /////////////////////////////////////////////////////////////////////////////// |
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100 | // This low-level function set a new value in a global register. |
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101 | /////////////////////////////////////////////////////////////////////////////// |
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102 | void _nic_set_global_register( unsigned int index, |
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103 | unsigned int value ) |
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104 | { |
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105 | unsigned int* vaddr = (unsigned int*)SEG_NIC_BASE + |
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106 | NIC_CHANNEL_SPAN * 8 + index; |
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107 | _io_extended_write( vaddr, value ); |
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108 | } |
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109 | |
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110 | //////////////////////////////////////////// |
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111 | int _nic_global_init( unsigned int bc_enable, |
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112 | unsigned int bypass_enable, |
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113 | unsigned int tdm_enable, |
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114 | unsigned int tdm_period ) |
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115 | { |
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116 | _nic_set_global_register( NIC_G_BC_ENABLE , bc_enable ); |
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117 | _nic_set_global_register( NIC_G_BYPASS_ENABLE, bypass_enable ); |
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118 | _nic_set_global_register( NIC_G_TDM_ENABLE , tdm_enable ); |
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119 | _nic_set_global_register( NIC_G_TDM_PERIOD , tdm_period ); |
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120 | _nic_set_global_register( NIC_G_VIS , 0 ); // channels activated later |
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121 | _nic_set_global_register( NIC_G_ON , 1 ); |
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122 | |
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123 | return 0; |
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124 | } |
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125 | |
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126 | //////////////////////////////////////////// |
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127 | int _nic_channel_start( unsigned int channel, |
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128 | unsigned int is_rx, |
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129 | unsigned int mac4, |
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130 | unsigned int mac2 ) |
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131 | { |
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132 | unsigned int vis = _nic_get_global_register( NIC_G_VIS ); |
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133 | vis |= (0x1 << channel ); |
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134 | |
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135 | _nic_set_global_register( NIC_G_MAC_4 + channel, mac4 ); |
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136 | _nic_set_global_register( NIC_G_MAC_2 + channel, mac2 ); |
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137 | _nic_set_global_register( NIC_G_VIS , vis ); |
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138 | |
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139 | unsigned int base = SEG_NIC_BASE; |
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140 | unsigned int extend = (X_IO << Y_WIDTH) + Y_IO; |
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141 | |
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142 | if ( is_rx ) |
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143 | { |
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144 | _nic_set_channel_register( channel, NIC_RX_DESC_LO_0, base ); |
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145 | _nic_set_channel_register( channel, NIC_RX_DESC_LO_1, base + 0x1000 ); |
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146 | _nic_set_channel_register( channel, NIC_RX_DESC_HI_0, extend ); |
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147 | _nic_set_channel_register( channel, NIC_RX_DESC_HI_1, extend ); |
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148 | _nic_set_channel_register( channel, NIC_RX_RUN , 1 ); |
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149 | } |
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150 | else |
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151 | { |
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152 | _nic_set_channel_register( channel, NIC_TX_DESC_LO_0, base + 0x2000 ); |
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153 | _nic_set_channel_register( channel, NIC_TX_DESC_LO_1, base + 0x3000 ); |
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154 | _nic_set_channel_register( channel, NIC_TX_DESC_HI_0, extend ); |
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155 | _nic_set_channel_register( channel, NIC_TX_DESC_HI_1, extend ); |
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156 | _nic_set_channel_register( channel, NIC_TX_RUN , 1 ); |
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157 | } |
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158 | |
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159 | return 0; |
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160 | } |
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161 | |
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162 | //////////////////////////////////////////// |
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163 | int _nic_channel_stop( unsigned int channel, |
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164 | unsigned int is_rx ) |
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165 | { |
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166 | if ( is_rx ) _nic_set_channel_register( channel, NIC_RX_RUN, 0 ); |
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167 | else _nic_set_channel_register( channel, NIC_TX_RUN, 0 ); |
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168 | |
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169 | return 0; |
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170 | } |
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171 | |
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172 | |
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173 | |
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174 | //////////////////////////////////////////////////////////////////////////////////////////// |
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175 | // Interrupt Service Routines |
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176 | //////////////////////////////////////////////////////////////////////////////////////////// |
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177 | |
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178 | //////////////////////////////////////// |
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179 | void _nic_rx_isr( unsigned int irq_type, |
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180 | unsigned int irq_id, |
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181 | unsigned int channel ) |
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182 | { |
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183 | _puts("[NIC WARNING] RX buffers are full for NIC channel "); |
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184 | _putd( channel ); |
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185 | _puts("\n"); |
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186 | } |
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187 | |
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188 | //////////////////////////////////////// |
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189 | void _nic_tx_isr( unsigned int irq_type, |
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190 | unsigned int irq_id, |
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191 | unsigned int channel ) |
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192 | { |
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193 | _puts("[NIC WARNING] TX buffers are full for NIC channel "); |
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194 | _putd( channel ); |
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195 | _puts("\n"); |
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196 | } |
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197 | |
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198 | // Local Variables: |
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199 | // tab-width: 4 |
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200 | // c-basic-offset: 4 |
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201 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
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202 | // indent-tabs-mode: nil |
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203 | // End: |
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204 | // vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
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205 | |
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