1 | /** |
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2 | * @file |
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3 | * |
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4 | * @ingroup lpc_eth |
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5 | * |
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6 | * @brief Ethernet driver. |
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7 | */ |
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8 | |
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9 | /* |
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10 | * Copyright (c) 2009 |
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11 | * embedded brains GmbH |
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12 | * Obere Lagerstr. 30 |
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13 | * D-82178 Puchheim |
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14 | * Germany |
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15 | * <rtems@embedded-brains.de> |
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16 | * |
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17 | * The license and distribution terms for this file may be |
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18 | * found in the file LICENSE in this distribution or at |
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19 | * http://www.rtems.com/license/LICENSE. |
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20 | */ |
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21 | |
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22 | #define __INSIDE_RTEMS_BSD_TCPIP_STACK__ 1 |
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23 | #define __BSD_VISIBLE 1 |
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24 | |
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25 | #include <errno.h> |
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26 | #include <inttypes.h> |
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27 | #include <stdlib.h> |
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28 | #include <stdio.h> |
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29 | #include <string.h> |
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30 | |
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31 | #include <rtems.h> |
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32 | #include <rtems/rtems_bsdnet.h> |
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33 | #include <rtems/rtems_mii_ioctl.h> |
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34 | |
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35 | #include <sys/param.h> |
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36 | #include <sys/socket.h> |
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37 | #include <sys/sockio.h> |
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38 | #include <sys/mbuf.h> |
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39 | |
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40 | #include <net/if.h> |
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41 | #include <net/if_arp.h> |
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42 | #include <netinet/in.h> |
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43 | #include <netinet/if_ether.h> |
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44 | #include <netinet/in_systm.h> |
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45 | #include <netinet/ip.h> |
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46 | |
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47 | #include <bsp.h> |
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48 | #include <bsp/irq.h> |
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49 | #include <bsp/lpc-ethernet-config.h> |
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50 | #include <bsp/utility.h> |
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51 | |
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52 | #include <rtems/status-checks.h> |
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53 | |
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54 | #if MCLBYTES > (2 * 1024) |
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55 | #error "MCLBYTES to large" |
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56 | #endif |
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57 | |
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58 | #ifdef LPC_ETH_CONFIG_USE_TRANSMIT_DMA |
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59 | #define LPC_ETH_CONFIG_TX_BUF_SIZE sizeof(struct mbuf *) |
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60 | #else |
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61 | #define LPC_ETH_CONFIG_TX_BUF_SIZE 1518U |
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62 | #endif |
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63 | |
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64 | #define DEFAULT_PHY 0 |
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65 | #define WATCHDOG_TIMEOUT 5 |
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66 | |
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67 | typedef struct { |
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68 | uint32_t start; |
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69 | uint32_t control; |
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70 | } lpc_eth_transfer_descriptor; |
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71 | |
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72 | typedef struct { |
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73 | uint32_t info; |
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74 | uint32_t hash_crc; |
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75 | } lpc_eth_receive_status; |
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76 | |
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77 | typedef struct { |
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78 | uint32_t mac1; |
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79 | uint32_t mac2; |
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80 | uint32_t ipgt; |
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81 | uint32_t ipgr; |
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82 | uint32_t clrt; |
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83 | uint32_t maxf; |
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84 | uint32_t supp; |
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85 | uint32_t test; |
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86 | uint32_t mcfg; |
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87 | uint32_t mcmd; |
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88 | uint32_t madr; |
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89 | uint32_t mwtd; |
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90 | uint32_t mrdd; |
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91 | uint32_t mind; |
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92 | uint32_t reserved_0 [2]; |
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93 | uint32_t sa0; |
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94 | uint32_t sa1; |
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95 | uint32_t sa2; |
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96 | uint32_t reserved_1 [45]; |
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97 | uint32_t command; |
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98 | uint32_t status; |
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99 | uint32_t rxdescriptor; |
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100 | uint32_t rxstatus; |
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101 | uint32_t rxdescriptornum; |
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102 | uint32_t rxproduceindex; |
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103 | uint32_t rxconsumeindex; |
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104 | uint32_t txdescriptor; |
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105 | uint32_t txstatus; |
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106 | uint32_t txdescriptornum; |
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107 | uint32_t txproduceindex; |
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108 | uint32_t txconsumeindex; |
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109 | uint32_t reserved_2 [10]; |
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110 | uint32_t tsv0; |
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111 | uint32_t tsv1; |
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112 | uint32_t rsv; |
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113 | uint32_t reserved_3 [3]; |
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114 | uint32_t flowcontrolcnt; |
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115 | uint32_t flowcontrolsts; |
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116 | uint32_t reserved_4 [34]; |
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117 | uint32_t rxfilterctrl; |
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118 | uint32_t rxfilterwolsts; |
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119 | uint32_t rxfilterwolclr; |
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120 | uint32_t reserved_5 [1]; |
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121 | uint32_t hashfilterl; |
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122 | uint32_t hashfilterh; |
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123 | uint32_t reserved_6 [882]; |
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124 | uint32_t intstatus; |
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125 | uint32_t intenable; |
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126 | uint32_t intclear; |
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127 | uint32_t intset; |
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128 | uint32_t reserved_7 [1]; |
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129 | uint32_t powerdown; |
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130 | } lpc_eth_controller; |
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131 | |
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132 | static volatile lpc_eth_controller *const lpc_eth = |
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133 | (volatile lpc_eth_controller *) LPC_ETH_CONFIG_REG_BASE; |
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134 | |
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135 | /* ETH_RX_CTRL */ |
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136 | |
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137 | #define ETH_RX_CTRL_SIZE_MASK 0x000007ffU |
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138 | #define ETH_RX_CTRL_INTERRUPT 0x80000000U |
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139 | |
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140 | /* ETH_RX_STAT */ |
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141 | |
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142 | #define ETH_RX_STAT_RXSIZE_MASK 0x000007ffU |
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143 | #define ETH_RX_STAT_BYTES 0x00000100U |
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144 | #define ETH_RX_STAT_CONTROL_FRAME 0x00040000U |
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145 | #define ETH_RX_STAT_VLAN 0x00080000U |
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146 | #define ETH_RX_STAT_FAIL_FILTER 0x00100000U |
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147 | #define ETH_RX_STAT_MULTICAST 0x00200000U |
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148 | #define ETH_RX_STAT_BROADCAST 0x00400000U |
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149 | #define ETH_RX_STAT_CRC_ERROR 0x00800000U |
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150 | #define ETH_RX_STAT_SYMBOL_ERROR 0x01000000U |
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151 | #define ETH_RX_STAT_LENGTH_ERROR 0x02000000U |
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152 | #define ETH_RX_STAT_RANGE_ERROR 0x04000000U |
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153 | #define ETH_RX_STAT_ALIGNMENT_ERROR 0x08000000U |
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154 | #define ETH_RX_STAT_OVERRUN 0x10000000U |
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155 | #define ETH_RX_STAT_NO_DESCRIPTOR 0x20000000U |
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156 | #define ETH_RX_STAT_LAST_FLAG 0x40000000U |
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157 | #define ETH_RX_STAT_ERROR 0x80000000U |
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158 | |
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159 | /* ETH_TX_CTRL */ |
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160 | |
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161 | #define ETH_TX_CTRL_SIZE_MASK 0x7ffU |
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162 | #define ETH_TX_CTRL_SIZE_SHIFT 0 |
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163 | #define ETH_TX_CTRL_OVERRIDE 0x04000000U |
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164 | #define ETH_TX_CTRL_HUGE 0x08000000U |
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165 | #define ETH_TX_CTRL_PAD 0x10000000U |
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166 | #define ETH_TX_CTRL_CRC 0x20000000U |
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167 | #define ETH_TX_CTRL_LAST 0x40000000U |
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168 | #define ETH_TX_CTRL_INTERRUPT 0x80000000U |
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169 | |
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170 | /* ETH_TX_STAT */ |
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171 | |
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172 | #define ETH_TX_STAT_COLLISION_COUNT_MASK 0x01e00000U |
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173 | #define ETH_TX_STAT_DEFER 0x02000000U |
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174 | #define ETH_TX_STAT_EXCESSIVE_DEFER 0x04000000U |
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175 | #define ETH_TX_STAT_EXCESSIVE_COLLISION 0x08000000U |
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176 | #define ETH_TX_STAT_LATE_COLLISION 0x10000000U |
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177 | #define ETH_TX_STAT_UNDERRUN 0x20000000U |
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178 | #define ETH_TX_STAT_NO_DESCRIPTOR 0x40000000U |
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179 | #define ETH_TX_STAT_ERROR 0x80000000U |
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180 | |
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181 | /* ETH_INT */ |
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182 | |
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183 | #define ETH_INT_RX_OVERRUN 0x00000001U |
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184 | #define ETH_INT_RX_ERROR 0x00000002U |
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185 | #define ETH_INT_RX_FINISHED 0x00000004U |
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186 | #define ETH_INT_RX_DONE 0x00000008U |
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187 | #define ETH_INT_TX_UNDERRUN 0x00000010U |
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188 | #define ETH_INT_TX_ERROR 0x00000020U |
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189 | #define ETH_INT_TX_FINISHED 0x00000040U |
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190 | #define ETH_INT_TX_DONE 0x00000080U |
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191 | #define ETH_INT_SOFT 0x00001000U |
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192 | #define ETH_INT_WAKEUP 0x00002000U |
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193 | |
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194 | /* ETH_RX_FIL_CTRL */ |
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195 | |
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196 | #define ETH_RX_FIL_CTRL_ACCEPT_UNICAST 0x00000001U |
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197 | #define ETH_RX_FIL_CTRL_ACCEPT_BROADCAST 0x00000002U |
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198 | #define ETH_RX_FIL_CTRL_ACCEPT_MULTICAST 0x00000004U |
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199 | #define ETH_RX_FIL_CTRL_ACCEPT_UNICAST_HASH 0x00000008U |
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200 | #define ETH_RX_FIL_CTRL_ACCEPT_MULTICAST_HASH 0x00000010U |
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201 | #define ETH_RX_FIL_CTRL_ACCEPT_PERFECT 0x00000020U |
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202 | #define ETH_RX_FIL_CTRL_MAGIC_PACKET_WOL 0x00001000U |
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203 | #define ETH_RX_FIL_CTRL_RX_FILTER_WOL 0x00002000U |
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204 | |
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205 | /* ETH_CMD */ |
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206 | |
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207 | #define ETH_CMD_RX_ENABLE 0x00000001U |
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208 | #define ETH_CMD_TX_ENABLE 0x00000002U |
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209 | #define ETH_CMD_REG_RESET 0x00000008U |
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210 | #define ETH_CMD_TX_RESET 0x00000010U |
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211 | #define ETH_CMD_RX_RESET 0x00000020U |
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212 | #define ETH_CMD_PASS_RUNT_FRAME 0x00000040U |
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213 | #define ETH_CMD_PASS_RX_FILTER 0X00000080U |
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214 | #define ETH_CMD_TX_FLOW_CONTROL 0x00000100U |
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215 | #define ETH_CMD_RMII 0x00000200U |
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216 | #define ETH_CMD_FULL_DUPLEX 0x00000400U |
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217 | |
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218 | /* ETH_STAT */ |
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219 | |
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220 | #define ETH_STAT_RX_ACTIVE 0x00000001U |
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221 | #define ETH_STAT_TX_ACTIVE 0x00000002U |
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222 | |
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223 | /* ETH_MAC2 */ |
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224 | |
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225 | #define ETH_MAC2_FULL_DUPLEX BSP_BIT32(8) |
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226 | |
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227 | /* ETH_SUPP */ |
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228 | |
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229 | #define ETH_SUPP_SPEED BSP_BIT32(8) |
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230 | |
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231 | /* ETH_MCFG */ |
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232 | |
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233 | #define ETH_MCFG_CLOCK_SELECT(val) BSP_FLD32(val, 2, 4) |
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234 | |
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235 | /* ETH_MCMD */ |
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236 | |
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237 | #define ETH_MCMD_READ BSP_BIT32(0) |
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238 | #define ETH_MCMD_SCAN BSP_BIT32(1) |
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239 | |
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240 | /* ETH_MADR */ |
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241 | |
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242 | #define ETH_MADR_REG(val) BSP_FLD32(val, 0, 4) |
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243 | #define ETH_MADR_PHY(val) BSP_FLD32(val, 8, 12) |
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244 | |
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245 | /* ETH_MIND */ |
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246 | |
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247 | #define ETH_MIND_BUSY BSP_BIT32(0) |
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248 | #define ETH_MIND_SCANNING BSP_BIT32(1) |
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249 | #define ETH_MIND_NOT_VALID BSP_BIT32(2) |
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250 | #define ETH_MIND_MII_LINK_FAIL BSP_BIT32(3) |
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251 | |
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252 | /* Events */ |
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253 | |
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254 | #define LPC_ETH_EVENT_INITIALIZE RTEMS_EVENT_1 |
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255 | |
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256 | #define LPC_ETH_EVENT_START RTEMS_EVENT_2 |
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257 | |
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258 | #define LPC_ETH_EVENT_INTERRUPT RTEMS_EVENT_3 |
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259 | |
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260 | /* Status */ |
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261 | |
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262 | #define LPC_ETH_INTERRUPT_RECEIVE \ |
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263 | (ETH_INT_RX_ERROR | ETH_INT_RX_FINISHED | ETH_INT_RX_DONE) |
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264 | |
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265 | #define LPC_ETH_INTERRUPT_TRANSMIT \ |
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266 | (ETH_INT_TX_DONE | ETH_INT_TX_FINISHED | ETH_INT_TX_ERROR) |
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267 | |
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268 | #define LPC_ETH_RX_STAT_ERRORS \ |
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269 | (ETH_RX_STAT_CRC_ERROR \ |
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270 | | ETH_RX_STAT_SYMBOL_ERROR \ |
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271 | | ETH_RX_STAT_LENGTH_ERROR \ |
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272 | | ETH_RX_STAT_ALIGNMENT_ERROR \ |
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273 | | ETH_RX_STAT_OVERRUN \ |
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274 | | ETH_RX_STAT_NO_DESCRIPTOR) |
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275 | |
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276 | #define LPC_ETH_LAST_FRAGMENT_FLAGS \ |
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277 | (ETH_TX_CTRL_OVERRIDE \ |
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278 | | ETH_TX_CTRL_PAD \ |
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279 | | ETH_TX_CTRL_CRC \ |
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280 | | ETH_TX_CTRL_INTERRUPT \ |
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281 | | ETH_TX_CTRL_LAST) |
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282 | |
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283 | /* Debug */ |
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284 | |
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285 | #ifdef DEBUG |
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286 | #define LPC_ETH_PRINTF(...) printf(__VA_ARGS__) |
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287 | #define LPC_ETH_PRINTK(...) printk(__VA_ARGS__) |
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288 | #else |
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289 | #define LPC_ETH_PRINTF(...) |
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290 | #define LPC_ETH_PRINTK(...) |
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291 | #endif |
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292 | |
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293 | typedef enum { |
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294 | LPC_ETH_NOT_INITIALIZED, |
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295 | LPC_ETH_INITIALIZED, |
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296 | LPC_ETH_STARTED, |
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297 | LPC_ETH_RUNNING |
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298 | } lpc_eth_state; |
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299 | |
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300 | typedef struct { |
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301 | struct arpcom arpcom; |
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302 | lpc_eth_state state; |
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303 | struct rtems_mdio_info mdio; |
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304 | uint32_t anlpar; |
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305 | rtems_id receive_task; |
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306 | rtems_id transmit_task; |
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307 | unsigned rx_unit_count; |
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308 | unsigned tx_unit_count; |
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309 | volatile lpc_eth_transfer_descriptor *rx_desc_table; |
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310 | volatile lpc_eth_receive_status *rx_status_table; |
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311 | struct mbuf **rx_mbuf_table; |
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312 | volatile lpc_eth_transfer_descriptor *tx_desc_table; |
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313 | volatile uint32_t *tx_status_table; |
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314 | void *tx_buf_table; |
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315 | unsigned received_frames; |
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316 | unsigned receive_interrupts; |
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317 | unsigned transmitted_frames; |
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318 | unsigned transmit_interrupts; |
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319 | unsigned receive_overrun_errors; |
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320 | unsigned receive_fragment_errors; |
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321 | unsigned receive_crc_errors; |
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322 | unsigned receive_symbol_errors; |
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323 | unsigned receive_length_errors; |
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324 | unsigned receive_alignment_errors; |
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325 | unsigned receive_no_descriptor_errors; |
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326 | unsigned receive_fatal_errors; |
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327 | unsigned transmit_underrun_errors; |
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328 | unsigned transmit_late_collision_errors; |
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329 | unsigned transmit_excessive_collision_errors; |
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330 | unsigned transmit_excessive_defer_errors; |
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331 | unsigned transmit_no_descriptor_errors; |
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332 | unsigned transmit_overflow_errors; |
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333 | unsigned transmit_fatal_errors; |
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334 | } lpc_eth_driver_entry; |
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335 | |
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336 | static lpc_eth_driver_entry lpc_eth_driver_data = { |
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337 | .state = LPC_ETH_NOT_INITIALIZED, |
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338 | .receive_task = RTEMS_ID_NONE, |
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339 | .transmit_task = RTEMS_ID_NONE |
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340 | }; |
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341 | |
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342 | static inline uint32_t lpc_eth_increment( |
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343 | uint32_t value, |
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344 | uint32_t cycle |
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345 | ) |
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346 | { |
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347 | if (value < cycle) { |
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348 | return ++value; |
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349 | } else { |
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350 | return 0; |
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351 | } |
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352 | } |
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353 | |
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354 | static void lpc_eth_enable_promiscous_mode(bool enable) |
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355 | { |
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356 | if (enable) { |
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357 | lpc_eth->rxfilterctrl = ETH_RX_FIL_CTRL_ACCEPT_PERFECT |
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358 | | ETH_RX_FIL_CTRL_ACCEPT_UNICAST |
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359 | | ETH_RX_FIL_CTRL_ACCEPT_MULTICAST |
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360 | | ETH_RX_FIL_CTRL_ACCEPT_BROADCAST; |
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361 | } else { |
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362 | lpc_eth->rxfilterctrl = ETH_RX_FIL_CTRL_ACCEPT_PERFECT |
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363 | | ETH_RX_FIL_CTRL_ACCEPT_BROADCAST; |
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364 | } |
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365 | } |
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366 | |
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367 | static void lpc_eth_interrupt_handler(void *arg) |
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368 | { |
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369 | lpc_eth_driver_entry *e = (lpc_eth_driver_entry *) arg; |
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370 | rtems_event_set re = 0; |
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371 | rtems_event_set te = 0; |
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372 | uint32_t ie = 0; |
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373 | |
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374 | /* Get interrupt status */ |
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375 | uint32_t im = lpc_eth->intenable; |
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376 | uint32_t is = lpc_eth->intstatus & im; |
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377 | |
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378 | /* Check receive interrupts */ |
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379 | if ((is & ETH_INT_RX_OVERRUN) != 0) { |
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380 | re = LPC_ETH_EVENT_INITIALIZE; |
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381 | ++e->receive_fatal_errors; |
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382 | } else if ((is & LPC_ETH_INTERRUPT_RECEIVE) != 0) { |
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383 | re = LPC_ETH_EVENT_INTERRUPT; |
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384 | ie |= LPC_ETH_INTERRUPT_RECEIVE; |
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385 | } |
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386 | |
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387 | /* Send events to receive task */ |
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388 | if (re != 0) { |
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389 | ++e->receive_interrupts; |
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390 | (void) rtems_event_send(e->receive_task, re); |
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391 | } |
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392 | |
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393 | /* Check transmit interrupts */ |
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394 | if ((is & ETH_INT_TX_UNDERRUN) != 0) { |
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395 | te = LPC_ETH_EVENT_INITIALIZE; |
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396 | ++e->transmit_fatal_errors; |
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397 | } else if ((is & LPC_ETH_INTERRUPT_TRANSMIT) != 0) { |
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398 | te = LPC_ETH_EVENT_INTERRUPT; |
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399 | ie |= LPC_ETH_INTERRUPT_TRANSMIT; |
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400 | } |
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401 | |
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402 | /* Send events to transmit task */ |
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403 | if (te != 0) { |
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404 | ++e->transmit_interrupts; |
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405 | (void) rtems_event_send(e->transmit_task, te); |
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406 | } |
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407 | |
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408 | LPC_ETH_PRINTK("interrupt: rx = 0x%08x, tx = 0x%08x\n", re, te); |
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409 | |
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410 | /* Update interrupt mask */ |
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411 | lpc_eth->intenable = im & ~ie; |
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412 | |
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413 | /* Clear interrupts */ |
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414 | lpc_eth->intclear = is; |
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415 | } |
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416 | |
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417 | static void lpc_eth_enable_receive_interrupts(void) |
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418 | { |
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419 | rtems_interrupt_level level; |
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420 | |
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421 | rtems_interrupt_disable(level); |
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422 | lpc_eth->intenable |= LPC_ETH_INTERRUPT_RECEIVE; |
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423 | rtems_interrupt_enable(level); |
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424 | } |
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425 | |
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426 | static void lpc_eth_disable_receive_interrupts(void) |
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427 | { |
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428 | rtems_interrupt_level level; |
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429 | |
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430 | rtems_interrupt_disable(level); |
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431 | lpc_eth->intenable &= ~LPC_ETH_INTERRUPT_RECEIVE; |
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432 | rtems_interrupt_enable(level); |
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433 | } |
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434 | |
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435 | static void lpc_eth_enable_transmit_interrupts(void) |
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436 | { |
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437 | rtems_interrupt_level level; |
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438 | |
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439 | rtems_interrupt_disable(level); |
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440 | lpc_eth->intenable |= LPC_ETH_INTERRUPT_TRANSMIT; |
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441 | rtems_interrupt_enable(level); |
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442 | } |
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443 | |
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444 | static void lpc_eth_disable_transmit_interrupts(void) |
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445 | { |
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446 | rtems_interrupt_level level; |
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447 | |
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448 | rtems_interrupt_disable(level); |
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449 | lpc_eth->intenable &= ~LPC_ETH_INTERRUPT_TRANSMIT; |
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450 | rtems_interrupt_enable(level); |
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451 | } |
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452 | |
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453 | #define LPC_ETH_RX_DATA_OFFSET 2 |
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454 | |
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455 | static struct mbuf *lpc_eth_new_mbuf(struct ifnet *ifp, bool wait) |
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456 | { |
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457 | struct mbuf *m = NULL; |
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458 | int mw = wait ? M_WAIT : M_DONTWAIT; |
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459 | |
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460 | MGETHDR(m, mw, MT_DATA); |
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461 | if (m != NULL) { |
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462 | MCLGET(m, mw); |
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463 | if ((m->m_flags & M_EXT) != 0) { |
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464 | /* Set receive interface */ |
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465 | m->m_pkthdr.rcvif = ifp; |
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466 | |
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467 | /* Adjust by two bytes for proper IP header alignment */ |
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468 | m->m_data = mtod(m, char *) + LPC_ETH_RX_DATA_OFFSET; |
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469 | |
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470 | return m; |
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471 | } else { |
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472 | m_free(m); |
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473 | } |
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474 | } |
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475 | |
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476 | return NULL; |
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477 | } |
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478 | |
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479 | static bool lpc_eth_add_new_mbuf( |
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480 | struct ifnet *ifp, |
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481 | volatile lpc_eth_transfer_descriptor *desc, |
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482 | struct mbuf **mbufs, |
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483 | uint32_t i, |
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484 | bool wait |
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485 | ) |
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486 | { |
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487 | /* New mbuf */ |
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488 | struct mbuf *m = lpc_eth_new_mbuf(ifp, wait); |
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489 | |
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490 | /* Check mbuf */ |
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491 | if (m != NULL) { |
---|
492 | /* Cache invalidate */ |
---|
493 | rtems_cache_invalidate_multiple_data_lines( |
---|
494 | mtod(m, void *), |
---|
495 | MCLBYTES - LPC_ETH_RX_DATA_OFFSET |
---|
496 | ); |
---|
497 | |
---|
498 | /* Add mbuf to queue */ |
---|
499 | desc [i].start = mtod(m, uint32_t); |
---|
500 | desc [i].control = (MCLBYTES - LPC_ETH_RX_DATA_OFFSET - 1) |
---|
501 | | ETH_RX_CTRL_INTERRUPT; |
---|
502 | |
---|
503 | /* Cache flush of descriptor */ |
---|
504 | rtems_cache_flush_multiple_data_lines((void *)&desc [i], |
---|
505 | sizeof(desc [0])); |
---|
506 | |
---|
507 | /* Add mbuf to table */ |
---|
508 | mbufs [i] = m; |
---|
509 | |
---|
510 | return true; |
---|
511 | } else { |
---|
512 | return false; |
---|
513 | } |
---|
514 | } |
---|
515 | |
---|
516 | static void lpc_eth_receive_task(void *arg) |
---|
517 | { |
---|
518 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
519 | rtems_event_set events = 0; |
---|
520 | lpc_eth_driver_entry *const e = (lpc_eth_driver_entry *) arg; |
---|
521 | struct ifnet *const ifp = &e->arpcom.ac_if; |
---|
522 | volatile lpc_eth_transfer_descriptor *const desc = e->rx_desc_table; |
---|
523 | volatile lpc_eth_receive_status *const status = e->rx_status_table; |
---|
524 | struct mbuf **const mbufs = e->rx_mbuf_table; |
---|
525 | uint32_t const index_max = e->rx_unit_count - 1; |
---|
526 | uint32_t produce_index = 0; |
---|
527 | uint32_t consume_index = 0; |
---|
528 | uint32_t receive_index = 0; |
---|
529 | |
---|
530 | LPC_ETH_PRINTF("%s\n", __func__); |
---|
531 | |
---|
532 | /* Main event loop */ |
---|
533 | while (true) { |
---|
534 | bool wait_for_mbuf = false; |
---|
535 | |
---|
536 | /* Wait for events */ |
---|
537 | sc = rtems_bsdnet_event_receive( |
---|
538 | LPC_ETH_EVENT_INITIALIZE | LPC_ETH_EVENT_INTERRUPT, |
---|
539 | RTEMS_EVENT_ANY | RTEMS_WAIT, |
---|
540 | RTEMS_NO_TIMEOUT, |
---|
541 | &events |
---|
542 | ); |
---|
543 | RTEMS_CLEANUP_SC(sc, cleanup, "wait for events"); |
---|
544 | |
---|
545 | LPC_ETH_PRINTF("rx: wake up: 0x%08" PRIx32 "\n", events); |
---|
546 | |
---|
547 | /* Initialize receiver? */ |
---|
548 | if ((events & LPC_ETH_EVENT_INITIALIZE) != 0) { |
---|
549 | /* Disable receive interrupts */ |
---|
550 | lpc_eth_disable_receive_interrupts(); |
---|
551 | |
---|
552 | /* Disable receiver */ |
---|
553 | lpc_eth->command &= ~ETH_CMD_RX_ENABLE; |
---|
554 | |
---|
555 | /* Wait for inactive status */ |
---|
556 | while ((lpc_eth->status & ETH_STAT_RX_ACTIVE) != 0) { |
---|
557 | /* Wait */ |
---|
558 | } |
---|
559 | |
---|
560 | /* Reset */ |
---|
561 | lpc_eth->command |= ETH_CMD_RX_RESET; |
---|
562 | |
---|
563 | /* Clear receive interrupts */ |
---|
564 | lpc_eth->intclear = LPC_ETH_INTERRUPT_RECEIVE; |
---|
565 | |
---|
566 | /* Move existing mbufs to the front */ |
---|
567 | consume_index = 0; |
---|
568 | for (produce_index = 0; produce_index <= index_max; ++produce_index) { |
---|
569 | if (mbufs [produce_index] != NULL) { |
---|
570 | mbufs [consume_index] = mbufs [produce_index]; |
---|
571 | ++consume_index; |
---|
572 | } |
---|
573 | } |
---|
574 | |
---|
575 | /* Fill receive queue */ |
---|
576 | for ( |
---|
577 | produce_index = consume_index; |
---|
578 | produce_index <= index_max; |
---|
579 | ++produce_index |
---|
580 | ) { |
---|
581 | lpc_eth_add_new_mbuf(ifp, desc, mbufs, produce_index, true); |
---|
582 | } |
---|
583 | |
---|
584 | /* Receive descriptor table */ |
---|
585 | lpc_eth->rxdescriptornum = index_max; |
---|
586 | lpc_eth->rxdescriptor = (uint32_t) desc; |
---|
587 | lpc_eth->rxstatus = (uint32_t) status; |
---|
588 | |
---|
589 | /* Initialize indices */ |
---|
590 | produce_index = lpc_eth->rxproduceindex; |
---|
591 | consume_index = lpc_eth->rxconsumeindex; |
---|
592 | receive_index = consume_index; |
---|
593 | |
---|
594 | /* Enable receiver */ |
---|
595 | lpc_eth->command |= ETH_CMD_RX_ENABLE; |
---|
596 | |
---|
597 | /* Enable receive interrupts */ |
---|
598 | lpc_eth_enable_receive_interrupts(); |
---|
599 | |
---|
600 | /* Wait for events */ |
---|
601 | continue; |
---|
602 | } |
---|
603 | |
---|
604 | while (true) { |
---|
605 | /* Clear receive interrupt status */ |
---|
606 | lpc_eth->intclear = LPC_ETH_INTERRUPT_RECEIVE; |
---|
607 | |
---|
608 | /* Get current produce index */ |
---|
609 | produce_index = lpc_eth->rxproduceindex; |
---|
610 | |
---|
611 | if (receive_index != produce_index) { |
---|
612 | uint32_t stat = 0; |
---|
613 | |
---|
614 | /* Fragment mbuf */ |
---|
615 | struct mbuf *m = mbufs [receive_index]; |
---|
616 | |
---|
617 | /* Fragment status */ |
---|
618 | rtems_cache_invalidate_multiple_data_lines |
---|
619 | ((void *)&status [receive_index], |
---|
620 | sizeof(status [0]) |
---|
621 | ); |
---|
622 | stat = status [receive_index].info; |
---|
623 | |
---|
624 | /* Remove mbuf from table */ |
---|
625 | mbufs [receive_index] = NULL; |
---|
626 | |
---|
627 | if ( |
---|
628 | (stat & ETH_RX_STAT_LAST_FLAG) != 0 |
---|
629 | && (stat & LPC_ETH_RX_STAT_ERRORS) == 0 |
---|
630 | ) { |
---|
631 | /* Ethernet header */ |
---|
632 | struct ether_header *eh = mtod(m, struct ether_header *); |
---|
633 | |
---|
634 | /* Discard Ethernet header and CRC */ |
---|
635 | int sz = (int) (stat & ETH_RX_STAT_RXSIZE_MASK) + 1 |
---|
636 | - ETHER_HDR_LEN - ETHER_CRC_LEN; |
---|
637 | |
---|
638 | /* Update mbuf */ |
---|
639 | m->m_len = sz; |
---|
640 | m->m_pkthdr.len = sz; |
---|
641 | m->m_data = mtod(m, char *) + ETHER_HDR_LEN; |
---|
642 | |
---|
643 | LPC_ETH_PRINTF("rx: %02" PRIu32 ": %u\n", receive_index, sz); |
---|
644 | |
---|
645 | /* Hand over */ |
---|
646 | ether_input(ifp, eh, m); |
---|
647 | |
---|
648 | /* Increment received frames counter */ |
---|
649 | ++e->received_frames; |
---|
650 | } else { |
---|
651 | /* Release mbuf */ |
---|
652 | m_free(m); |
---|
653 | |
---|
654 | /* Update error counters */ |
---|
655 | if ((stat & ETH_RX_STAT_OVERRUN) != 0) { |
---|
656 | ++e->receive_overrun_errors; |
---|
657 | } |
---|
658 | if ((stat & ETH_RX_STAT_LAST_FLAG) == 0) { |
---|
659 | ++e->receive_fragment_errors; |
---|
660 | } |
---|
661 | if ((stat & ETH_RX_STAT_CRC_ERROR) != 0) { |
---|
662 | ++e->receive_crc_errors; |
---|
663 | } |
---|
664 | if ((stat & ETH_RX_STAT_SYMBOL_ERROR) != 0) { |
---|
665 | ++e->receive_symbol_errors; |
---|
666 | } |
---|
667 | if ((stat & ETH_RX_STAT_LENGTH_ERROR) != 0) { |
---|
668 | ++e->receive_length_errors; |
---|
669 | } |
---|
670 | if ((stat & ETH_RX_STAT_ALIGNMENT_ERROR) != 0) { |
---|
671 | ++e->receive_alignment_errors; |
---|
672 | } |
---|
673 | if ((stat & ETH_RX_STAT_NO_DESCRIPTOR) != 0) { |
---|
674 | ++e->receive_no_descriptor_errors; |
---|
675 | } |
---|
676 | } |
---|
677 | |
---|
678 | /* Increment receive index */ |
---|
679 | receive_index = lpc_eth_increment(receive_index, index_max); |
---|
680 | } else { |
---|
681 | /* Nothing to do, enable receive interrupts */ |
---|
682 | lpc_eth_enable_receive_interrupts(); |
---|
683 | break; |
---|
684 | } |
---|
685 | } |
---|
686 | |
---|
687 | /* Wait for mbuf? */ |
---|
688 | wait_for_mbuf = |
---|
689 | lpc_eth_increment(produce_index, index_max) == consume_index; |
---|
690 | |
---|
691 | /* Fill queue with new mbufs */ |
---|
692 | while (consume_index != produce_index) { |
---|
693 | /* Add new mbuf to queue */ |
---|
694 | if ( |
---|
695 | !lpc_eth_add_new_mbuf(ifp, desc, mbufs, consume_index, wait_for_mbuf) |
---|
696 | ) { |
---|
697 | break; |
---|
698 | } |
---|
699 | |
---|
700 | /* We wait for at most one mbuf */ |
---|
701 | wait_for_mbuf = false; |
---|
702 | |
---|
703 | /* Increment consume index */ |
---|
704 | consume_index = lpc_eth_increment(consume_index, index_max); |
---|
705 | |
---|
706 | /* Update consume indices */ |
---|
707 | lpc_eth->rxconsumeindex = consume_index; |
---|
708 | } |
---|
709 | } |
---|
710 | |
---|
711 | cleanup: |
---|
712 | |
---|
713 | /* Clear task ID */ |
---|
714 | e->receive_task = RTEMS_ID_NONE; |
---|
715 | |
---|
716 | /* Release network semaphore */ |
---|
717 | rtems_bsdnet_semaphore_release(); |
---|
718 | |
---|
719 | /* Terminate self */ |
---|
720 | (void) rtems_task_delete(RTEMS_SELF); |
---|
721 | } |
---|
722 | |
---|
723 | static struct mbuf *lpc_eth_next_fragment( |
---|
724 | struct ifnet *ifp, |
---|
725 | struct mbuf *m, |
---|
726 | uint32_t *ctrl |
---|
727 | ) |
---|
728 | { |
---|
729 | struct mbuf *n = NULL; |
---|
730 | int size = 0; |
---|
731 | |
---|
732 | while (true) { |
---|
733 | if (m == NULL) { |
---|
734 | /* Dequeue first fragment of the next frame */ |
---|
735 | IF_DEQUEUE(&ifp->if_snd, m); |
---|
736 | |
---|
737 | /* Empty queue? */ |
---|
738 | if (m == NULL) { |
---|
739 | return m; |
---|
740 | } |
---|
741 | } |
---|
742 | |
---|
743 | /* Get fragment size */ |
---|
744 | size = m->m_len; |
---|
745 | |
---|
746 | if (size > 0) { |
---|
747 | /* Now we have a not empty fragment */ |
---|
748 | break; |
---|
749 | } else { |
---|
750 | /* Discard empty fragments */ |
---|
751 | m = m_free(m); |
---|
752 | } |
---|
753 | } |
---|
754 | |
---|
755 | /* Set fragment size */ |
---|
756 | *ctrl = (uint32_t) (size - 1); |
---|
757 | |
---|
758 | /* Discard empty successive fragments */ |
---|
759 | n = m->m_next; |
---|
760 | while (n != NULL && n->m_len <= 0) { |
---|
761 | n = m_free(n); |
---|
762 | } |
---|
763 | m->m_next = n; |
---|
764 | |
---|
765 | /* Is our fragment the last in the frame? */ |
---|
766 | if (n == NULL) { |
---|
767 | *ctrl |= LPC_ETH_LAST_FRAGMENT_FLAGS; |
---|
768 | } |
---|
769 | |
---|
770 | return m; |
---|
771 | } |
---|
772 | |
---|
773 | static void lpc_eth_transmit_task(void *arg) |
---|
774 | { |
---|
775 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
776 | rtems_event_set events = 0; |
---|
777 | lpc_eth_driver_entry *e = (lpc_eth_driver_entry *) arg; |
---|
778 | struct ifnet *ifp = &e->arpcom.ac_if; |
---|
779 | volatile lpc_eth_transfer_descriptor *const desc = e->tx_desc_table; |
---|
780 | volatile uint32_t *const status = e->tx_status_table; |
---|
781 | #ifdef LPC_ETH_CONFIG_USE_TRANSMIT_DMA |
---|
782 | struct mbuf **const mbufs = e->tx_buf_table; |
---|
783 | #else |
---|
784 | char *const buf = e->tx_buf_table; |
---|
785 | #endif |
---|
786 | struct mbuf *m = NULL; |
---|
787 | uint32_t const index_max = e->tx_unit_count - 1; |
---|
788 | uint32_t produce_index = 0; |
---|
789 | uint32_t consume_index = 0; |
---|
790 | uint32_t ctrl = 0; |
---|
791 | #ifndef LPC_ETH_CONFIG_USE_TRANSMIT_DMA |
---|
792 | uint32_t frame_length = 0; |
---|
793 | char *frame_buffer = NULL; |
---|
794 | #endif |
---|
795 | |
---|
796 | LPC_ETH_PRINTF("%s\n", __func__); |
---|
797 | |
---|
798 | #ifndef LPC_ETH_CONFIG_USE_TRANSMIT_DMA |
---|
799 | /* Initialize descriptor table */ |
---|
800 | for (produce_index = 0; produce_index <= index_max; ++produce_index) { |
---|
801 | desc [produce_index].start = |
---|
802 | (uint32_t) (buf + produce_index * LPC_ETH_CONFIG_TX_BUF_SIZE); |
---|
803 | } |
---|
804 | #endif |
---|
805 | |
---|
806 | /* Main event loop */ |
---|
807 | while (true) { |
---|
808 | /* Wait for events */ |
---|
809 | sc = rtems_bsdnet_event_receive( |
---|
810 | LPC_ETH_EVENT_INITIALIZE |
---|
811 | | LPC_ETH_EVENT_START |
---|
812 | | LPC_ETH_EVENT_INTERRUPT, |
---|
813 | RTEMS_EVENT_ANY | RTEMS_WAIT, |
---|
814 | RTEMS_NO_TIMEOUT, |
---|
815 | &events |
---|
816 | ); |
---|
817 | RTEMS_CLEANUP_SC(sc, cleanup, "wait for events"); |
---|
818 | |
---|
819 | LPC_ETH_PRINTF("tx: wake up: 0x%08" PRIx32 "\n", events); |
---|
820 | |
---|
821 | /* Initialize transmitter? */ |
---|
822 | if ((events & LPC_ETH_EVENT_INITIALIZE) != 0) { |
---|
823 | /* Disable transmit interrupts */ |
---|
824 | lpc_eth_disable_transmit_interrupts(); |
---|
825 | |
---|
826 | /* Disable transmitter */ |
---|
827 | lpc_eth->command &= ~ETH_CMD_TX_ENABLE; |
---|
828 | |
---|
829 | /* Wait for inactive status */ |
---|
830 | while ((lpc_eth->status & ETH_STAT_TX_ACTIVE) != 0) { |
---|
831 | /* Wait */ |
---|
832 | } |
---|
833 | |
---|
834 | /* Reset */ |
---|
835 | lpc_eth->command |= ETH_CMD_TX_RESET; |
---|
836 | |
---|
837 | /* Clear transmit interrupts */ |
---|
838 | lpc_eth->intclear = LPC_ETH_INTERRUPT_TRANSMIT; |
---|
839 | |
---|
840 | /* Transmit descriptors */ |
---|
841 | lpc_eth->txdescriptornum = index_max; |
---|
842 | lpc_eth->txdescriptor = (uint32_t) desc; |
---|
843 | lpc_eth->txstatus = (uint32_t) status; |
---|
844 | |
---|
845 | #ifdef LPC_ETH_CONFIG_USE_TRANSMIT_DMA |
---|
846 | /* Discard outstanding fragments (= data loss) */ |
---|
847 | for (produce_index = 0; produce_index <= index_max; ++produce_index) { |
---|
848 | struct mbuf *victim = mbufs [produce_index]; |
---|
849 | |
---|
850 | if (victim != NULL) { |
---|
851 | m_free(victim); |
---|
852 | mbufs [produce_index] = NULL; |
---|
853 | } |
---|
854 | } |
---|
855 | #endif |
---|
856 | |
---|
857 | /* Initialize indices */ |
---|
858 | produce_index = lpc_eth->txproduceindex; |
---|
859 | consume_index = lpc_eth->txconsumeindex; |
---|
860 | |
---|
861 | #ifndef LPC_ETH_CONFIG_USE_TRANSMIT_DMA |
---|
862 | /* Fresh frame length and buffer start */ |
---|
863 | frame_length = 0; |
---|
864 | frame_buffer = (char *) desc [produce_index].start; |
---|
865 | #endif |
---|
866 | |
---|
867 | /* Enable transmitter */ |
---|
868 | lpc_eth->command |= ETH_CMD_TX_ENABLE; |
---|
869 | } |
---|
870 | |
---|
871 | /* Free consumed fragments */ |
---|
872 | while (true) { |
---|
873 | /* Save last known consume index */ |
---|
874 | uint32_t c = consume_index; |
---|
875 | |
---|
876 | /* Clear transmit interrupt status */ |
---|
877 | lpc_eth->intclear = LPC_ETH_INTERRUPT_TRANSMIT; |
---|
878 | |
---|
879 | /* Get new consume index */ |
---|
880 | consume_index = lpc_eth->txconsumeindex; |
---|
881 | |
---|
882 | /* Nothing consumed in the meantime? */ |
---|
883 | if (c == consume_index) { |
---|
884 | break; |
---|
885 | } |
---|
886 | |
---|
887 | while (c != consume_index) { |
---|
888 | uint32_t s = status [c]; |
---|
889 | |
---|
890 | /* Update error counters */ |
---|
891 | if ((s & (ETH_TX_STAT_ERROR | ETH_TX_STAT_NO_DESCRIPTOR)) != 0) { |
---|
892 | if ((s & ETH_TX_STAT_UNDERRUN) != 0) { |
---|
893 | ++e->transmit_underrun_errors; |
---|
894 | } |
---|
895 | if ((s & ETH_TX_STAT_LATE_COLLISION) != 0) { |
---|
896 | ++e->transmit_late_collision_errors; |
---|
897 | } |
---|
898 | if ((s & ETH_TX_STAT_EXCESSIVE_COLLISION) != 0) { |
---|
899 | ++e->transmit_excessive_collision_errors; |
---|
900 | } |
---|
901 | if ((s & ETH_TX_STAT_EXCESSIVE_DEFER) != 0) { |
---|
902 | ++e->transmit_excessive_defer_errors; |
---|
903 | } |
---|
904 | if ((s & ETH_TX_STAT_NO_DESCRIPTOR) != 0) { |
---|
905 | ++e->transmit_no_descriptor_errors; |
---|
906 | } |
---|
907 | } |
---|
908 | |
---|
909 | #ifdef LPC_ETH_CONFIG_USE_TRANSMIT_DMA |
---|
910 | /* Release mbuf */ |
---|
911 | m_free(mbufs [c]); |
---|
912 | mbufs [c] = NULL; |
---|
913 | #endif |
---|
914 | |
---|
915 | /* Next consume index */ |
---|
916 | c = lpc_eth_increment(c, index_max); |
---|
917 | } |
---|
918 | } |
---|
919 | |
---|
920 | /* Transmit new fragments */ |
---|
921 | while (true) { |
---|
922 | /* Compute next produce index */ |
---|
923 | uint32_t p = lpc_eth_increment(produce_index, index_max); |
---|
924 | |
---|
925 | /* Get next fragment and control value */ |
---|
926 | m = lpc_eth_next_fragment(ifp, m, &ctrl); |
---|
927 | |
---|
928 | /* Queue full? */ |
---|
929 | if (p == consume_index) { |
---|
930 | LPC_ETH_PRINTF("tx: full queue: 0x%08x\n", m); |
---|
931 | |
---|
932 | /* The queue is full, wait for transmit interrupt */ |
---|
933 | break; |
---|
934 | } |
---|
935 | |
---|
936 | /* New fragment? */ |
---|
937 | if (m != NULL) { |
---|
938 | #ifdef LPC_ETH_CONFIG_USE_TRANSMIT_DMA |
---|
939 | /* Set the transfer data */ |
---|
940 | rtems_cache_flush_multiple_data_lines( |
---|
941 | mtod(m, const void *), |
---|
942 | (size_t) m->m_len |
---|
943 | ); |
---|
944 | desc [produce_index].start = mtod(m, uint32_t); |
---|
945 | desc [produce_index].control = ctrl; |
---|
946 | rtems_cache_flush_multiple_data_lines |
---|
947 | ((void *)&desc [produce_index], |
---|
948 | sizeof(desc [0]) |
---|
949 | ); |
---|
950 | mbufs [produce_index] = m; |
---|
951 | |
---|
952 | LPC_ETH_PRINTF( |
---|
953 | "tx: %02" PRIu32 ": %u %s\n", |
---|
954 | produce_index, m->m_len, |
---|
955 | (ctrl & ETH_TX_CTRL_LAST) != 0 ? "L" : "" |
---|
956 | ); |
---|
957 | |
---|
958 | /* Next produce index */ |
---|
959 | produce_index = p; |
---|
960 | |
---|
961 | /* Last fragment of a frame? */ |
---|
962 | if ((ctrl & ETH_TX_CTRL_LAST) != 0) { |
---|
963 | /* Update the produce index */ |
---|
964 | lpc_eth->txproduceindex = produce_index; |
---|
965 | |
---|
966 | /* Increment transmitted frames counter */ |
---|
967 | ++e->transmitted_frames; |
---|
968 | } |
---|
969 | |
---|
970 | /* Next fragment of the frame */ |
---|
971 | m = m->m_next; |
---|
972 | #else |
---|
973 | size_t fragment_length = (size_t) m->m_len; |
---|
974 | void *fragment_start = mtod(m, void *); |
---|
975 | uint32_t new_frame_length = frame_length + fragment_length; |
---|
976 | |
---|
977 | /* Check buffer size */ |
---|
978 | if (new_frame_length > LPC_ETH_CONFIG_TX_BUF_SIZE) { |
---|
979 | LPC_ETH_PRINTF("tx: overflow\n"); |
---|
980 | |
---|
981 | /* Discard overflow data */ |
---|
982 | new_frame_length = LPC_ETH_CONFIG_TX_BUF_SIZE; |
---|
983 | fragment_length = new_frame_length - frame_length; |
---|
984 | |
---|
985 | /* Finalize frame */ |
---|
986 | ctrl |= LPC_ETH_LAST_FRAGMENT_FLAGS; |
---|
987 | |
---|
988 | /* Update error counter */ |
---|
989 | ++e->transmit_overflow_errors; |
---|
990 | } |
---|
991 | |
---|
992 | LPC_ETH_PRINTF( |
---|
993 | "tx: copy: %" PRIu32 "%s%s\n", |
---|
994 | fragment_length, |
---|
995 | (m->m_flags & M_EXT) != 0 ? ", E" : "", |
---|
996 | (m->m_flags & M_PKTHDR) != 0 ? ", H" : "" |
---|
997 | ); |
---|
998 | |
---|
999 | /* Copy fragment to buffer in Ethernet RAM */ |
---|
1000 | memcpy(frame_buffer, fragment_start, fragment_length); |
---|
1001 | |
---|
1002 | if ((ctrl & ETH_TX_CTRL_LAST) != 0) { |
---|
1003 | /* Finalize descriptor */ |
---|
1004 | desc [produce_index].control = (ctrl & ~ETH_TX_CTRL_SIZE_MASK) |
---|
1005 | | (new_frame_length - 1); |
---|
1006 | |
---|
1007 | LPC_ETH_PRINTF( |
---|
1008 | "tx: %02" PRIu32 ": %" PRIu32 "\n", |
---|
1009 | produce_index, |
---|
1010 | new_frame_length |
---|
1011 | ); |
---|
1012 | |
---|
1013 | /* Cache flush of data */ |
---|
1014 | rtems_cache_flush_multiple_data_lines( |
---|
1015 | (const void *) desc [produce_index].start, |
---|
1016 | new_frame_length |
---|
1017 | ); |
---|
1018 | |
---|
1019 | /* Cache flush of descriptor */ |
---|
1020 | rtems_cache_flush_multiple_data_lines |
---|
1021 | ((void *)&desc [produce_index], |
---|
1022 | sizeof(desc [0]) |
---|
1023 | ); |
---|
1024 | |
---|
1025 | /* Next produce index */ |
---|
1026 | produce_index = p; |
---|
1027 | |
---|
1028 | /* Update the produce index */ |
---|
1029 | lpc_eth->txproduceindex = produce_index; |
---|
1030 | |
---|
1031 | /* Fresh frame length and buffer start */ |
---|
1032 | frame_length = 0; |
---|
1033 | frame_buffer = (char *) desc [produce_index].start; |
---|
1034 | |
---|
1035 | /* Increment transmitted frames counter */ |
---|
1036 | ++e->transmitted_frames; |
---|
1037 | } else { |
---|
1038 | /* New frame length */ |
---|
1039 | frame_length = new_frame_length; |
---|
1040 | |
---|
1041 | /* Update current frame buffer start */ |
---|
1042 | frame_buffer += fragment_length; |
---|
1043 | } |
---|
1044 | |
---|
1045 | /* Free mbuf and get next */ |
---|
1046 | m = m_free(m); |
---|
1047 | #endif |
---|
1048 | } else { |
---|
1049 | /* Nothing to transmit */ |
---|
1050 | break; |
---|
1051 | } |
---|
1052 | } |
---|
1053 | |
---|
1054 | /* No more fragments? */ |
---|
1055 | if (m == NULL) { |
---|
1056 | /* Interface is now inactive */ |
---|
1057 | ifp->if_flags &= ~IFF_OACTIVE; |
---|
1058 | } else { |
---|
1059 | LPC_ETH_PRINTF("tx: enable interrupts\n"); |
---|
1060 | |
---|
1061 | /* Enable transmit interrupts */ |
---|
1062 | lpc_eth_enable_transmit_interrupts(); |
---|
1063 | } |
---|
1064 | } |
---|
1065 | |
---|
1066 | cleanup: |
---|
1067 | |
---|
1068 | /* Clear task ID */ |
---|
1069 | e->transmit_task = RTEMS_ID_NONE; |
---|
1070 | |
---|
1071 | /* Release network semaphore */ |
---|
1072 | rtems_bsdnet_semaphore_release(); |
---|
1073 | |
---|
1074 | /* Terminate self */ |
---|
1075 | (void) rtems_task_delete(RTEMS_SELF); |
---|
1076 | } |
---|
1077 | |
---|
1078 | static void lpc_eth_mdio_wait_for_not_busy(void) |
---|
1079 | { |
---|
1080 | while ((lpc_eth->mind & ETH_MIND_BUSY) != 0) { |
---|
1081 | rtems_task_wake_after(2); |
---|
1082 | } |
---|
1083 | } |
---|
1084 | |
---|
1085 | static uint32_t lpc_eth_mdio_read_anlpar(void) |
---|
1086 | { |
---|
1087 | uint32_t madr = ETH_MADR_REG(MII_ANLPAR) | ETH_MADR_PHY(DEFAULT_PHY); |
---|
1088 | uint32_t anlpar = 0; |
---|
1089 | |
---|
1090 | if (lpc_eth->madr != madr) { |
---|
1091 | lpc_eth->madr = madr; |
---|
1092 | } |
---|
1093 | |
---|
1094 | if (lpc_eth->mcmd != ETH_MCMD_READ) { |
---|
1095 | lpc_eth->mcmd = 0; |
---|
1096 | lpc_eth->mcmd = ETH_MCMD_READ; |
---|
1097 | } |
---|
1098 | |
---|
1099 | lpc_eth_mdio_wait_for_not_busy(); |
---|
1100 | |
---|
1101 | anlpar = lpc_eth->mrdd; |
---|
1102 | |
---|
1103 | /* Start next read */ |
---|
1104 | lpc_eth->mcmd = 0; |
---|
1105 | lpc_eth->mcmd = ETH_MCMD_READ; |
---|
1106 | |
---|
1107 | return anlpar; |
---|
1108 | } |
---|
1109 | |
---|
1110 | static int lpc_eth_mdio_read( |
---|
1111 | int phy __attribute__((unused)), |
---|
1112 | void *arg __attribute__((unused)), |
---|
1113 | unsigned reg, |
---|
1114 | uint32_t *val |
---|
1115 | ) |
---|
1116 | { |
---|
1117 | int eno = 0; |
---|
1118 | |
---|
1119 | if (phy == -1 || phy == 0) { |
---|
1120 | lpc_eth->madr = ETH_MADR_REG(reg) | ETH_MADR_PHY(DEFAULT_PHY); |
---|
1121 | lpc_eth->mcmd = 0; |
---|
1122 | lpc_eth->mcmd = ETH_MCMD_READ; |
---|
1123 | lpc_eth_mdio_wait_for_not_busy(); |
---|
1124 | *val = lpc_eth->mrdd; |
---|
1125 | } else { |
---|
1126 | eno = EINVAL; |
---|
1127 | } |
---|
1128 | |
---|
1129 | return eno; |
---|
1130 | } |
---|
1131 | |
---|
1132 | static int lpc_eth_mdio_write( |
---|
1133 | int phy __attribute__((unused)), |
---|
1134 | void *arg __attribute__((unused)), |
---|
1135 | unsigned reg, |
---|
1136 | uint32_t val |
---|
1137 | ) |
---|
1138 | { |
---|
1139 | int eno = 0; |
---|
1140 | |
---|
1141 | if (phy == -1 || phy == 0) { |
---|
1142 | lpc_eth->madr = ETH_MADR_REG(reg) | ETH_MADR_PHY(DEFAULT_PHY); |
---|
1143 | lpc_eth->mwtd = val; |
---|
1144 | lpc_eth_mdio_wait_for_not_busy(); |
---|
1145 | } else { |
---|
1146 | eno = EINVAL; |
---|
1147 | } |
---|
1148 | |
---|
1149 | return eno; |
---|
1150 | } |
---|
1151 | |
---|
1152 | static void lpc_eth_interface_init(void *arg) |
---|
1153 | { |
---|
1154 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
1155 | lpc_eth_driver_entry *e = (lpc_eth_driver_entry *) arg; |
---|
1156 | struct ifnet *ifp = &e->arpcom.ac_if; |
---|
1157 | |
---|
1158 | LPC_ETH_PRINTF("%s\n", __func__); |
---|
1159 | |
---|
1160 | if (e->state == LPC_ETH_INITIALIZED) { |
---|
1161 | lpc_eth_config_module_enable(); |
---|
1162 | |
---|
1163 | /* Soft reset */ |
---|
1164 | |
---|
1165 | /* Do soft reset */ |
---|
1166 | lpc_eth->command = 0x38; |
---|
1167 | lpc_eth->mac1 = 0xcf00; |
---|
1168 | lpc_eth->mac1 = 0x0; |
---|
1169 | |
---|
1170 | /* Initialize PHY */ |
---|
1171 | lpc_eth->mcfg = ETH_MCFG_CLOCK_SELECT(0x7); |
---|
1172 | /* TODO */ |
---|
1173 | |
---|
1174 | /* Reinitialize registers */ |
---|
1175 | lpc_eth->mac2 = 0x31; |
---|
1176 | lpc_eth->ipgt = 0x15; |
---|
1177 | lpc_eth->ipgr = 0x12; |
---|
1178 | lpc_eth->clrt = 0x370f; |
---|
1179 | lpc_eth->maxf = 0x0600; |
---|
1180 | lpc_eth->supp = ETH_SUPP_SPEED; |
---|
1181 | lpc_eth->test = 0; |
---|
1182 | #ifdef LPC_ETH_CONFIG_RMII |
---|
1183 | lpc_eth->command = 0x0600; |
---|
1184 | #else |
---|
1185 | lpc_eth->command = 0x0400; |
---|
1186 | #endif |
---|
1187 | lpc_eth->intenable = 0; |
---|
1188 | lpc_eth->intclear = 0x30ff; |
---|
1189 | lpc_eth->powerdown = 0; |
---|
1190 | |
---|
1191 | /* MAC address */ |
---|
1192 | lpc_eth->sa0 = ((uint32_t) e->arpcom.ac_enaddr [5] << 8) |
---|
1193 | | (uint32_t) e->arpcom.ac_enaddr [4]; |
---|
1194 | lpc_eth->sa1 = ((uint32_t) e->arpcom.ac_enaddr [3] << 8) |
---|
1195 | | (uint32_t) e->arpcom.ac_enaddr [2]; |
---|
1196 | lpc_eth->sa2 = ((uint32_t) e->arpcom.ac_enaddr [1] << 8) |
---|
1197 | | (uint32_t) e->arpcom.ac_enaddr [0]; |
---|
1198 | |
---|
1199 | /* Enable receiver */ |
---|
1200 | lpc_eth->mac1 = 0x03; |
---|
1201 | |
---|
1202 | /* Start receive task */ |
---|
1203 | if (e->receive_task == RTEMS_ID_NONE) { |
---|
1204 | e->receive_task = rtems_bsdnet_newproc( |
---|
1205 | "ntrx", |
---|
1206 | 4096, |
---|
1207 | lpc_eth_receive_task, |
---|
1208 | e |
---|
1209 | ); |
---|
1210 | sc = rtems_event_send(e->receive_task, LPC_ETH_EVENT_INITIALIZE); |
---|
1211 | RTEMS_SYSLOG_ERROR_SC(sc, "send receive initialize event"); |
---|
1212 | } |
---|
1213 | |
---|
1214 | /* Start transmit task */ |
---|
1215 | if (e->transmit_task == RTEMS_ID_NONE) { |
---|
1216 | e->transmit_task = rtems_bsdnet_newproc( |
---|
1217 | "nttx", |
---|
1218 | 4096, |
---|
1219 | lpc_eth_transmit_task, |
---|
1220 | e |
---|
1221 | ); |
---|
1222 | sc = rtems_event_send(e->transmit_task, LPC_ETH_EVENT_INITIALIZE); |
---|
1223 | RTEMS_SYSLOG_ERROR_SC(sc, "send transmit initialize event"); |
---|
1224 | } |
---|
1225 | |
---|
1226 | /* Change state */ |
---|
1227 | if ( |
---|
1228 | e->receive_task != RTEMS_ID_NONE && e->transmit_task != RTEMS_ID_NONE |
---|
1229 | ) { |
---|
1230 | e->state = LPC_ETH_STARTED; |
---|
1231 | } |
---|
1232 | } |
---|
1233 | |
---|
1234 | if (e->state == LPC_ETH_STARTED) { |
---|
1235 | /* Enable fatal interrupts */ |
---|
1236 | lpc_eth->intenable = ETH_INT_RX_OVERRUN | ETH_INT_TX_UNDERRUN; |
---|
1237 | |
---|
1238 | /* Enable promiscous mode */ |
---|
1239 | lpc_eth_enable_promiscous_mode((ifp->if_flags & IFF_PROMISC) != 0); |
---|
1240 | |
---|
1241 | /* Start watchdog timer */ |
---|
1242 | ifp->if_timer = 1; |
---|
1243 | |
---|
1244 | /* Set interface to running state */ |
---|
1245 | ifp->if_flags |= IFF_RUNNING; |
---|
1246 | |
---|
1247 | /* Change state */ |
---|
1248 | e->state = LPC_ETH_RUNNING; |
---|
1249 | } |
---|
1250 | } |
---|
1251 | |
---|
1252 | static void lpc_eth_interface_stats(lpc_eth_driver_entry *e) |
---|
1253 | { |
---|
1254 | int media = IFM_MAKEWORD(0, 0, 0, 0); |
---|
1255 | int eno = rtems_mii_ioctl(&e->mdio, e, SIOCGIFMEDIA, &media); |
---|
1256 | |
---|
1257 | rtems_bsdnet_semaphore_release(); |
---|
1258 | |
---|
1259 | if (eno == 0) { |
---|
1260 | rtems_ifmedia2str(media, NULL, 0); |
---|
1261 | printf("\n"); |
---|
1262 | } |
---|
1263 | |
---|
1264 | printf("received frames: %u\n", e->received_frames); |
---|
1265 | printf("receive interrupts: %u\n", e->receive_interrupts); |
---|
1266 | printf("transmitted frames: %u\n", e->transmitted_frames); |
---|
1267 | printf("transmit interrupts: %u\n", e->transmit_interrupts); |
---|
1268 | printf("receive overrun errors: %u\n", e->receive_overrun_errors); |
---|
1269 | printf("receive fragment errors: %u\n", e->receive_fragment_errors); |
---|
1270 | printf("receive CRC errors: %u\n", e->receive_crc_errors); |
---|
1271 | printf("receive symbol errors: %u\n", e->receive_symbol_errors); |
---|
1272 | printf("receive length errors: %u\n", e->receive_length_errors); |
---|
1273 | printf("receive alignment errors: %u\n", e->receive_alignment_errors); |
---|
1274 | printf("receive no descriptor errors: %u\n", e->receive_no_descriptor_errors); |
---|
1275 | printf("receive fatal errors: %u\n", e->receive_fatal_errors); |
---|
1276 | printf("transmit underrun errors: %u\n", e->transmit_underrun_errors); |
---|
1277 | printf("transmit late collision errors: %u\n", e->transmit_late_collision_errors); |
---|
1278 | printf("transmit excessive collision errors: %u\n", e->transmit_excessive_collision_errors); |
---|
1279 | printf("transmit excessive defer errors: %u\n", e->transmit_excessive_defer_errors); |
---|
1280 | printf("transmit no descriptor errors: %u\n", e->transmit_no_descriptor_errors); |
---|
1281 | printf("transmit overflow errors: %u\n", e->transmit_overflow_errors); |
---|
1282 | printf("transmit fatal errors: %u\n", e->transmit_fatal_errors); |
---|
1283 | |
---|
1284 | rtems_bsdnet_semaphore_obtain(); |
---|
1285 | } |
---|
1286 | |
---|
1287 | static int lpc_eth_interface_ioctl( |
---|
1288 | struct ifnet *ifp, |
---|
1289 | ioctl_command_t command, |
---|
1290 | caddr_t data |
---|
1291 | ) |
---|
1292 | { |
---|
1293 | lpc_eth_driver_entry *e = (lpc_eth_driver_entry *) ifp->if_softc; |
---|
1294 | int rv = 0; |
---|
1295 | |
---|
1296 | LPC_ETH_PRINTF("%s\n", __func__); |
---|
1297 | |
---|
1298 | switch (command) { |
---|
1299 | case SIOCGIFMEDIA: |
---|
1300 | case SIOCSIFMEDIA: |
---|
1301 | rtems_mii_ioctl(&e->mdio, e, command, (int *) data); |
---|
1302 | break; |
---|
1303 | case SIOCGIFADDR: |
---|
1304 | case SIOCSIFADDR: |
---|
1305 | ether_ioctl(ifp, command, data); |
---|
1306 | break; |
---|
1307 | case SIOCSIFFLAGS: |
---|
1308 | if (ifp->if_flags & IFF_RUNNING) { |
---|
1309 | /* TODO: off */ |
---|
1310 | } |
---|
1311 | if (ifp->if_flags & IFF_UP) { |
---|
1312 | ifp->if_flags |= IFF_RUNNING; |
---|
1313 | /* TODO: init */ |
---|
1314 | } |
---|
1315 | break; |
---|
1316 | case SIO_RTEMS_SHOW_STATS: |
---|
1317 | lpc_eth_interface_stats(e); |
---|
1318 | break; |
---|
1319 | default: |
---|
1320 | rv = EINVAL; |
---|
1321 | break; |
---|
1322 | } |
---|
1323 | |
---|
1324 | return rv; |
---|
1325 | } |
---|
1326 | |
---|
1327 | static void lpc_eth_interface_start(struct ifnet *ifp) |
---|
1328 | { |
---|
1329 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
1330 | lpc_eth_driver_entry *e = (lpc_eth_driver_entry *) ifp->if_softc; |
---|
1331 | |
---|
1332 | ifp->if_flags |= IFF_OACTIVE; |
---|
1333 | |
---|
1334 | sc = rtems_event_send(e->transmit_task, LPC_ETH_EVENT_START); |
---|
1335 | RTEMS_SYSLOG_ERROR_SC(sc, "send transmit start event"); |
---|
1336 | } |
---|
1337 | |
---|
1338 | static void lpc_eth_interface_watchdog(struct ifnet *ifp __attribute__((unused))) |
---|
1339 | { |
---|
1340 | lpc_eth_driver_entry *e = (lpc_eth_driver_entry *) ifp->if_softc; |
---|
1341 | uint32_t anlpar = lpc_eth_mdio_read_anlpar(); |
---|
1342 | |
---|
1343 | if (e->anlpar != anlpar) { |
---|
1344 | bool full_duplex = false; |
---|
1345 | bool speed = false; |
---|
1346 | |
---|
1347 | e->anlpar = anlpar; |
---|
1348 | |
---|
1349 | if ((anlpar & ANLPAR_TX_FD) != 0) { |
---|
1350 | full_duplex = true; |
---|
1351 | speed = true; |
---|
1352 | } else if ((anlpar & ANLPAR_T4) != 0) { |
---|
1353 | speed = true; |
---|
1354 | } else if ((anlpar & ANLPAR_TX) != 0) { |
---|
1355 | speed = true; |
---|
1356 | } else if ((anlpar & ANLPAR_10_FD) != 0) { |
---|
1357 | full_duplex = true; |
---|
1358 | } |
---|
1359 | |
---|
1360 | if (full_duplex) { |
---|
1361 | lpc_eth->mac2 |= ETH_MAC2_FULL_DUPLEX; |
---|
1362 | } else { |
---|
1363 | lpc_eth->mac2 &= ~ETH_MAC2_FULL_DUPLEX; |
---|
1364 | } |
---|
1365 | |
---|
1366 | if (speed) { |
---|
1367 | lpc_eth->supp |= ETH_SUPP_SPEED; |
---|
1368 | } else { |
---|
1369 | lpc_eth->supp &= ~ETH_SUPP_SPEED; |
---|
1370 | } |
---|
1371 | } |
---|
1372 | |
---|
1373 | ifp->if_timer = WATCHDOG_TIMEOUT; |
---|
1374 | } |
---|
1375 | |
---|
1376 | static unsigned lpc_eth_fixup_unit_count(int count, int default_value, int max) |
---|
1377 | { |
---|
1378 | if (count <= 0) { |
---|
1379 | count = default_value; |
---|
1380 | } else if (count > max) { |
---|
1381 | count = max; |
---|
1382 | } |
---|
1383 | |
---|
1384 | return LPC_ETH_CONFIG_UNIT_MULTIPLE |
---|
1385 | + (((unsigned) count - 1U) & ~(LPC_ETH_CONFIG_UNIT_MULTIPLE - 1U)); |
---|
1386 | } |
---|
1387 | |
---|
1388 | static int lpc_eth_attach(struct rtems_bsdnet_ifconfig *config) |
---|
1389 | { |
---|
1390 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
1391 | lpc_eth_driver_entry *e = &lpc_eth_driver_data; |
---|
1392 | struct ifnet *ifp = &e->arpcom.ac_if; |
---|
1393 | char *unit_name = NULL; |
---|
1394 | int unit_index = rtems_bsdnet_parse_driver_name(config, &unit_name); |
---|
1395 | size_t table_area_size = 0; |
---|
1396 | char *table_area = NULL; |
---|
1397 | char *table_location = NULL; |
---|
1398 | |
---|
1399 | /* Check parameter */ |
---|
1400 | if (unit_index < 0) { |
---|
1401 | RTEMS_SYSLOG_ERROR("parse error for interface name\n"); |
---|
1402 | return 0; |
---|
1403 | } |
---|
1404 | if (unit_index != 0) { |
---|
1405 | RTEMS_DO_CLEANUP(cleanup, "unexpected unit number"); |
---|
1406 | } |
---|
1407 | if (config->hardware_address == NULL) { |
---|
1408 | RTEMS_DO_CLEANUP(cleanup, "MAC address missing"); |
---|
1409 | } |
---|
1410 | if (e->state != LPC_ETH_NOT_INITIALIZED) { |
---|
1411 | RTEMS_DO_CLEANUP(cleanup, "already attached"); |
---|
1412 | } |
---|
1413 | |
---|
1414 | /* MDIO */ |
---|
1415 | e->mdio.mdio_r = lpc_eth_mdio_read; |
---|
1416 | e->mdio.mdio_w = lpc_eth_mdio_write; |
---|
1417 | e->mdio.has_gmii = 0; |
---|
1418 | e->anlpar = 0; |
---|
1419 | |
---|
1420 | /* Interrupt number */ |
---|
1421 | config->irno = LPC_ETH_CONFIG_INTERRUPT; |
---|
1422 | |
---|
1423 | /* Device control */ |
---|
1424 | config->drv_ctrl = e; |
---|
1425 | |
---|
1426 | /* Receive unit count */ |
---|
1427 | e->rx_unit_count = lpc_eth_fixup_unit_count( |
---|
1428 | config->rbuf_count, |
---|
1429 | LPC_ETH_CONFIG_RX_UNIT_COUNT_DEFAULT, |
---|
1430 | LPC_ETH_CONFIG_RX_UNIT_COUNT_MAX |
---|
1431 | ); |
---|
1432 | config->rbuf_count = (int) e->rx_unit_count; |
---|
1433 | |
---|
1434 | /* Transmit unit count */ |
---|
1435 | e->tx_unit_count = lpc_eth_fixup_unit_count( |
---|
1436 | config->xbuf_count, |
---|
1437 | LPC_ETH_CONFIG_TX_UNIT_COUNT_DEFAULT, |
---|
1438 | LPC_ETH_CONFIG_TX_UNIT_COUNT_MAX |
---|
1439 | ); |
---|
1440 | config->xbuf_count = (int) e->tx_unit_count; |
---|
1441 | |
---|
1442 | /* Disable interrupts */ |
---|
1443 | lpc_eth->intenable = 0; |
---|
1444 | |
---|
1445 | /* Install interrupt handler */ |
---|
1446 | sc = rtems_interrupt_handler_install( |
---|
1447 | config->irno, |
---|
1448 | "Ethernet", |
---|
1449 | RTEMS_INTERRUPT_UNIQUE, |
---|
1450 | lpc_eth_interrupt_handler, |
---|
1451 | e |
---|
1452 | ); |
---|
1453 | RTEMS_CLEANUP_SC(sc, cleanup, "install interrupt handler"); |
---|
1454 | |
---|
1455 | /* Copy MAC address */ |
---|
1456 | memcpy(e->arpcom.ac_enaddr, config->hardware_address, ETHER_ADDR_LEN); |
---|
1457 | |
---|
1458 | /* Allocate and clear table area */ |
---|
1459 | table_area_size = |
---|
1460 | e->rx_unit_count |
---|
1461 | * (sizeof(lpc_eth_transfer_descriptor) |
---|
1462 | + sizeof(lpc_eth_receive_status) |
---|
1463 | + sizeof(struct mbuf *)) |
---|
1464 | + e->tx_unit_count |
---|
1465 | * (sizeof(lpc_eth_transfer_descriptor) |
---|
1466 | + sizeof(uint32_t) |
---|
1467 | + LPC_ETH_CONFIG_TX_BUF_SIZE); |
---|
1468 | table_area = lpc_eth_config_alloc_table_area(table_area_size); |
---|
1469 | if (table_area == NULL) { |
---|
1470 | RTEMS_DO_CLEANUP(cleanup, "no memory for table area"); |
---|
1471 | } |
---|
1472 | memset(table_area, 0, table_area_size); |
---|
1473 | |
---|
1474 | table_location = table_area; |
---|
1475 | |
---|
1476 | /* |
---|
1477 | * The receive status table must be the first one since it has the strictest |
---|
1478 | * alignment requirements. |
---|
1479 | */ |
---|
1480 | e->rx_status_table = (volatile lpc_eth_receive_status *) table_location; |
---|
1481 | table_location += e->rx_unit_count * sizeof(e->rx_status_table [0]); |
---|
1482 | |
---|
1483 | e->rx_desc_table = (volatile lpc_eth_transfer_descriptor *) table_location; |
---|
1484 | table_location += e->rx_unit_count * sizeof(e->rx_desc_table [0]); |
---|
1485 | |
---|
1486 | e->rx_mbuf_table = (struct mbuf **) table_location; |
---|
1487 | table_location += e->rx_unit_count * sizeof(e->rx_mbuf_table [0]); |
---|
1488 | |
---|
1489 | e->tx_desc_table = (volatile lpc_eth_transfer_descriptor *) table_location; |
---|
1490 | table_location += e->tx_unit_count * sizeof(e->tx_desc_table [0]); |
---|
1491 | |
---|
1492 | e->tx_status_table = (volatile uint32_t *) table_location; |
---|
1493 | table_location += e->tx_unit_count * sizeof(e->tx_status_table [0]); |
---|
1494 | |
---|
1495 | e->tx_buf_table = table_location; |
---|
1496 | |
---|
1497 | /* Set interface data */ |
---|
1498 | ifp->if_softc = e; |
---|
1499 | ifp->if_unit = (short) unit_index; |
---|
1500 | ifp->if_name = unit_name; |
---|
1501 | ifp->if_mtu = (config->mtu > 0) ? (u_long) config->mtu : ETHERMTU; |
---|
1502 | ifp->if_init = lpc_eth_interface_init; |
---|
1503 | ifp->if_ioctl = lpc_eth_interface_ioctl; |
---|
1504 | ifp->if_start = lpc_eth_interface_start; |
---|
1505 | ifp->if_output = ether_output; |
---|
1506 | ifp->if_watchdog = lpc_eth_interface_watchdog; |
---|
1507 | ifp->if_flags = config->ignore_broadcast ? 0 : IFF_BROADCAST; |
---|
1508 | ifp->if_snd.ifq_maxlen = ifqmaxlen; |
---|
1509 | ifp->if_timer = 0; |
---|
1510 | |
---|
1511 | /* Change status */ |
---|
1512 | e->state = LPC_ETH_INITIALIZED; |
---|
1513 | |
---|
1514 | /* Attach the interface */ |
---|
1515 | if_attach(ifp); |
---|
1516 | ether_ifattach(ifp); |
---|
1517 | |
---|
1518 | return 1; |
---|
1519 | |
---|
1520 | cleanup: |
---|
1521 | |
---|
1522 | lpc_eth_config_free_table_area(table_area); |
---|
1523 | |
---|
1524 | /* FIXME: Type */ |
---|
1525 | free(unit_name, (int) 0xdeadbeef); |
---|
1526 | |
---|
1527 | return 0; |
---|
1528 | } |
---|
1529 | |
---|
1530 | static int lpc_eth_detach( |
---|
1531 | struct rtems_bsdnet_ifconfig *config __attribute__((unused)) |
---|
1532 | ) |
---|
1533 | { |
---|
1534 | /* FIXME: Detach the interface from the upper layers? */ |
---|
1535 | |
---|
1536 | /* Module soft reset */ |
---|
1537 | lpc_eth->command = 0x38; |
---|
1538 | lpc_eth->mac1 = 0xcf00; |
---|
1539 | |
---|
1540 | /* FIXME: More cleanup */ |
---|
1541 | |
---|
1542 | return 0; |
---|
1543 | } |
---|
1544 | |
---|
1545 | int lpc_eth_attach_detach( |
---|
1546 | struct rtems_bsdnet_ifconfig *config, |
---|
1547 | int attaching |
---|
1548 | ) |
---|
1549 | { |
---|
1550 | /* FIXME: Return value */ |
---|
1551 | |
---|
1552 | if (attaching) { |
---|
1553 | return lpc_eth_attach(config); |
---|
1554 | } else { |
---|
1555 | return lpc_eth_detach(config); |
---|
1556 | } |
---|
1557 | } |
---|