1 | /* |
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2 | * RTEMS driver for Opencores Ethernet Controller |
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3 | * |
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4 | * Weakly based on dec21140 rtems driver and open_eth linux driver |
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5 | * Written by Jiri Gaisler, Gaisler Research |
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6 | * |
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7 | * The license and distribution terms for this file may be |
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8 | * found in found in the file LICENSE in this distribution or at |
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9 | * http://www.OARcorp.com/rtems/license.html. |
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10 | * |
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11 | * $Id$ |
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12 | */ |
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13 | |
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14 | #include <rtems.h> |
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15 | |
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16 | #define GRETH_SUPPORTED |
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17 | #include <bsp.h> |
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18 | |
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19 | #include <inttypes.h> |
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20 | #include <errno.h> |
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21 | #include <stdlib.h> |
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22 | #include <stdio.h> |
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23 | #include <stdarg.h> |
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24 | #include <rtems/error.h> |
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25 | #include <rtems/rtems_bsdnet.h> |
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26 | #include "greth.h" |
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27 | |
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28 | #include <sys/param.h> |
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29 | #include <sys/mbuf.h> |
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30 | |
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31 | #include <sys/socket.h> |
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32 | #include <sys/sockio.h> |
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33 | #include <net/if.h> |
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34 | #include <netinet/in.h> |
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35 | #include <netinet/if_ether.h> |
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36 | |
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37 | #ifdef malloc |
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38 | #undef malloc |
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39 | #endif |
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40 | #ifdef free |
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41 | #undef free |
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42 | #endif |
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43 | |
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44 | /* |
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45 | #define GRETH_DEBUG |
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46 | */ |
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47 | |
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48 | #ifdef CPU_U32_FIX |
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49 | extern void ipalign(struct mbuf *m); |
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50 | #endif |
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51 | |
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52 | /* |
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53 | * Number of OCs supported by this driver |
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54 | */ |
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55 | #define NOCDRIVER 1 |
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56 | |
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57 | /* |
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58 | * Receive buffer size -- Allow for a full ethernet packet including CRC |
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59 | */ |
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60 | #define RBUF_SIZE 1518 |
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61 | |
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62 | #define ET_MINLEN 64 /* minimum message length */ |
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63 | |
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64 | /* |
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65 | * RTEMS event used by interrupt handler to signal driver tasks. |
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66 | * This must not be any of the events used by the network task synchronization. |
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67 | */ |
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68 | #define INTERRUPT_EVENT RTEMS_EVENT_1 |
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69 | |
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70 | /* |
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71 | * RTEMS event used to start transmit daemon. |
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72 | * This must not be the same as INTERRUPT_EVENT. |
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73 | */ |
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74 | #define START_TRANSMIT_EVENT RTEMS_EVENT_2 |
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75 | |
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76 | /* event to send when tx buffers become available */ |
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77 | #define GRETH_TX_WAIT_EVENT RTEMS_EVENT_3 |
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78 | |
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79 | /* suspend when all TX descriptors exhausted */ |
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80 | /* |
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81 | #define GRETH_SUSPEND_NOTXBUF |
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82 | */ |
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83 | |
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84 | #if (MCLBYTES < RBUF_SIZE) |
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85 | # error "Driver must have MCLBYTES > RBUF_SIZE" |
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86 | #endif |
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87 | |
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88 | /* Ethernet buffer descriptor */ |
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89 | |
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90 | typedef struct _greth_rxtxdesc { |
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91 | volatile uint32_t ctrl; /* Length and status */ |
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92 | uint32_t *addr; /* Buffer pointer */ |
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93 | } greth_rxtxdesc; |
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94 | |
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95 | /* |
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96 | * Per-device data |
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97 | */ |
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98 | struct greth_softc |
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99 | { |
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100 | |
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101 | struct arpcom arpcom; |
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102 | |
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103 | greth_regs *regs; |
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104 | |
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105 | int acceptBroadcast; |
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106 | rtems_id rxDaemonTid; |
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107 | rtems_id txDaemonTid; |
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108 | |
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109 | unsigned int tx_ptr; |
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110 | unsigned int rx_ptr; |
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111 | unsigned int txbufs; |
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112 | unsigned int rxbufs; |
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113 | greth_rxtxdesc *txdesc; |
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114 | greth_rxtxdesc *rxdesc; |
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115 | struct mbuf **rxmbuf; |
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116 | rtems_vector_number vector; |
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117 | |
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118 | /* |
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119 | * Statistics |
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120 | */ |
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121 | unsigned long rxInterrupts; |
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122 | |
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123 | unsigned long rxPackets; |
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124 | unsigned long rxLengthError; |
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125 | unsigned long rxNonOctet; |
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126 | unsigned long rxBadCRC; |
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127 | unsigned long rxOverrun; |
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128 | |
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129 | unsigned long txInterrupts; |
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130 | |
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131 | unsigned long txDeferred; |
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132 | unsigned long txHeartbeat; |
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133 | unsigned long txLateCollision; |
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134 | unsigned long txRetryLimit; |
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135 | unsigned long txUnderrun; |
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136 | }; |
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137 | |
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138 | static struct greth_softc greth; |
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139 | |
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140 | static char *almalloc(int sz) |
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141 | { |
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142 | char *tmp; |
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143 | tmp = calloc(1,2*sz); |
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144 | tmp = (char *) (((int)tmp+sz) & ~(sz -1)); |
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145 | return(tmp); |
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146 | } |
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147 | |
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148 | /* GRETH interrupt handler */ |
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149 | |
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150 | static rtems_isr |
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151 | greth_interrupt_handler (rtems_vector_number v) |
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152 | { |
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153 | uint32_t status; |
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154 | /* read and clear interrupt cause */ |
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155 | |
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156 | status = greth.regs->status; |
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157 | greth.regs->status = status; |
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158 | |
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159 | /* Frame received? */ |
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160 | if (status & (GRETH_STATUS_RXERR | GRETH_STATUS_RXIRQ)) |
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161 | { |
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162 | greth.rxInterrupts++; |
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163 | rtems_event_send (greth.rxDaemonTid, INTERRUPT_EVENT); |
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164 | } |
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165 | #ifdef GRETH_SUSPEND_NOTXBUF |
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166 | if (status & (GRETH_STATUS_TXERR | GRETH_STATUS_TXIRQ)) |
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167 | { |
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168 | greth.txInterrupts++; |
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169 | rtems_event_send (greth.txDaemonTid, GRETH_TX_WAIT_EVENT); |
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170 | } |
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171 | #endif |
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172 | /* |
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173 | #ifdef __leon__ |
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174 | LEON_Clear_interrupt(v-0x10); |
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175 | #endif |
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176 | */ |
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177 | } |
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178 | |
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179 | static uint32_t read_mii(uint32_t addr) |
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180 | { |
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181 | while (greth.regs->mdio_ctrl & GRETH_MDIO_BUSY) {} |
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182 | greth.regs->mdio_ctrl = addr << 6 | GRETH_MDIO_READ; |
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183 | while (greth.regs->mdio_ctrl & GRETH_MDIO_BUSY) {} |
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184 | if (!(greth.regs->mdio_ctrl & GRETH_MDIO_LINKFAIL)) |
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185 | return((greth.regs->mdio_ctrl >> 16) & 0xFFFF); |
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186 | else { |
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187 | printf("greth: failed to read mii\n"); |
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188 | return (0); |
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189 | } |
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190 | } |
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191 | |
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192 | static void write_mii(uint32_t addr, uint32_t data) |
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193 | { |
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194 | while (greth.regs->mdio_ctrl & GRETH_MDIO_BUSY) {} |
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195 | greth.regs->mdio_ctrl = |
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196 | ((data & 0xFFFF) << 16) | (addr << 8) | GRETH_MDIO_WRITE; |
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197 | while (greth.regs->mdio_ctrl & GRETH_MDIO_BUSY) {} |
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198 | } |
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199 | /* |
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200 | * Initialize the ethernet hardware |
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201 | */ |
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202 | static void |
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203 | greth_initialize_hardware (struct greth_softc *sc) |
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204 | { |
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205 | struct mbuf *m; |
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206 | int i; |
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207 | int fd; |
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208 | |
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209 | greth_regs *regs; |
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210 | |
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211 | regs = sc->regs; |
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212 | |
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213 | /* Reset the controller. */ |
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214 | greth.rxInterrupts = 0; |
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215 | greth.rxPackets = 0; |
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216 | |
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217 | regs->ctrl = 0; |
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218 | regs->ctrl = GRETH_CTRL_RST; /* Reset ON */ |
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219 | regs->ctrl = 0; /* Reset OFF */ |
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220 | |
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221 | /* reset PHY and wait for complettion */ |
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222 | /* |
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223 | */ |
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224 | write_mii(0, 0x8000); |
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225 | while (read_mii(0) & 0x8000) {} |
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226 | fd = regs->mdio_ctrl >> 24; /*duplex mode*/ |
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227 | printf("greth: driver attached, PHY config : 0x%04x\n", read_mii(0)); |
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228 | |
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229 | /* Initialize rx/tx descriptor pointers */ |
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230 | sc->txdesc = (greth_rxtxdesc *) almalloc(1024); |
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231 | sc->rxdesc = (greth_rxtxdesc *) almalloc(1024); |
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232 | sc->tx_ptr = 0; |
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233 | sc->rx_ptr = 0; |
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234 | regs->txdesc = (int) sc->txdesc; |
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235 | regs->rxdesc = (int) sc->rxdesc; |
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236 | |
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237 | sc->rxmbuf = calloc(sc->rxbufs, sizeof(*sc->rxmbuf)); |
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238 | |
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239 | for (i = 0; i < sc->txbufs; i++) |
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240 | { |
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241 | sc->txdesc[i].addr = (uint32_t *) calloc(1, GRETH_MAXBUF_LEN); |
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242 | #ifdef GRETH_DEBUG |
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243 | printf("TXBUF: %08x\n", (int) sc->txdesc[i].addr); |
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244 | #endif |
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245 | } |
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246 | /*printf("RXbufs: %i\n", sc->rxbufs);*/ |
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247 | for (i = 0; i < sc->rxbufs; i++) |
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248 | { |
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249 | |
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250 | MGETHDR (m, M_WAIT, MT_DATA); |
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251 | MCLGET (m, M_WAIT); |
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252 | m->m_pkthdr.rcvif = &sc->arpcom.ac_if; |
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253 | sc->rxmbuf[i] = m; |
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254 | sc->rxdesc[i].addr = (uint32_t *) mtod(m, uint32_t *); |
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255 | sc->rxdesc[i].ctrl = GRETH_RXD_ENABLE | GRETH_RXD_IRQ; |
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256 | #ifdef GRETH_DEBUG |
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257 | printf("RXBUF: %08x\n", (int) sc->rxdesc[i].addr); |
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258 | #endif |
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259 | } |
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260 | sc->rxdesc[sc->rxbufs - 1].ctrl |= GRETH_RXD_WRAP; |
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261 | |
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262 | /* set ethernet address. */ |
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263 | regs->mac_addr_msb = |
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264 | sc->arpcom.ac_enaddr[0] << 8 | sc->arpcom.ac_enaddr[1]; |
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265 | regs->mac_addr_lsb = |
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266 | sc->arpcom.ac_enaddr[2] << 24 | sc->arpcom.ac_enaddr[3] << 16 | |
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267 | sc->arpcom.ac_enaddr[4] << 8 | sc->arpcom.ac_enaddr[5]; |
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268 | |
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269 | /* install interrupt vector */ |
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270 | set_vector(greth_interrupt_handler, sc->vector, 1); |
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271 | |
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272 | /* clear all pending interrupts */ |
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273 | |
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274 | regs->status = 0xffffffff; |
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275 | |
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276 | #ifdef GRETH_SUSPEND_NOTXBUF |
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277 | regs->ctrl |= GRETH_CTRL_TXIRQ; |
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278 | #endif |
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279 | |
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280 | regs->ctrl |= GRETH_CTRL_RXEN | (fd << 4) | GRETH_CTRL_RXIRQ; |
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281 | } |
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282 | |
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283 | static void |
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284 | greth_rxDaemon (void *arg) |
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285 | { |
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286 | struct ether_header *eh; |
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287 | struct greth_softc *dp = (struct greth_softc *) &greth; |
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288 | struct ifnet *ifp = &dp->arpcom.ac_if; |
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289 | struct mbuf *m; |
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290 | unsigned int len, len_status, bad; |
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291 | rtems_event_set events; |
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292 | |
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293 | /*printf("Started RxDaemon\n");*/ |
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294 | for (;;) |
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295 | { |
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296 | rtems_bsdnet_event_receive (INTERRUPT_EVENT, |
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297 | RTEMS_WAIT | RTEMS_EVENT_ANY, |
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298 | RTEMS_NO_TIMEOUT, &events); |
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299 | |
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300 | #ifdef GRETH_ETH_DEBUG |
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301 | printf ("r\n"); |
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302 | #endif |
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303 | /*printf("Packet received\n");*/ |
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304 | while (!((len_status = |
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305 | dp->rxdesc[dp->rx_ptr].ctrl) & GRETH_RXD_ENABLE)) |
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306 | { |
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307 | /*printf("Status: %x\n", dp->rxdesc[dp->rx_ptr].ctrl);*/ |
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308 | bad = 0; |
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309 | |
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310 | if (len_status & GRETH_RXD_TOOLONG) |
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311 | { |
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312 | dp->rxLengthError++; |
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313 | bad = 1; |
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314 | } |
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315 | if (len_status & GRETH_RXD_DRIBBLE) |
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316 | { |
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317 | dp->rxNonOctet++; |
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318 | bad = 1; |
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319 | } |
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320 | if (len_status & GRETH_RXD_CRCERR) |
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321 | { |
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322 | dp->rxBadCRC++; |
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323 | bad = 1; |
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324 | } |
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325 | if (len_status & GRETH_RXD_OVERRUN) |
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326 | { |
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327 | dp->rxOverrun++; |
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328 | bad = 1; |
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329 | } |
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330 | if (!bad) |
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331 | { |
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332 | /*printf("Received Ok packet\n");*/ |
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333 | /* pass on the packet in the receive buffer */ |
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334 | len = len_status & 0x7FF; |
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335 | m = dp->rxmbuf[dp->rx_ptr]; |
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336 | m->m_len = m->m_pkthdr.len = |
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337 | len - sizeof (struct ether_header); |
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338 | /*printf("Packet of length: %i\n", len);*/ |
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339 | eh = mtod (m, struct ether_header *); |
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340 | m->m_data += sizeof (struct ether_header); |
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341 | /*printf("Mbuf handling done\n");*/ |
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342 | #ifdef CPU_U32_FIX |
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343 | /*printf("Ip aligning\n");*/ |
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344 | ipalign(m); /* Align packet on 32-bit boundary */ |
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345 | #endif |
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346 | /*printf("Calling stack\n");*/ |
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347 | /*printf("Ifp: %x, Eh: %x, M: %x\n", (int)ifp, (int)eh, (int)m);*/ |
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348 | ether_input (ifp, eh, m); |
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349 | /*printf("Returned from stack\n");*/ |
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350 | /* get a new mbuf */ |
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351 | /*printf("Getting new mbuf\n");*/ |
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352 | MGETHDR (m, M_WAIT, MT_DATA); |
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353 | MCLGET (m, M_WAIT); |
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354 | /*printf("Got new mbuf\n");*/ |
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355 | dp->rxmbuf[dp->rx_ptr] = m; |
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356 | m->m_pkthdr.rcvif = ifp; |
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357 | dp->rxdesc[dp->rx_ptr].addr = |
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358 | (uint32_t *) mtod (m, uint32_t *); |
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359 | dp->rxPackets++; |
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360 | } |
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361 | /*printf("Reenabling desc\n");*/ |
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362 | dp->rxdesc[dp->rx_ptr].ctrl = GRETH_RXD_ENABLE | GRETH_RXD_IRQ; |
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363 | if (dp->rx_ptr == dp->rxbufs - 1) { |
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364 | dp->rxdesc[dp->rx_ptr].ctrl |= GRETH_RXD_WRAP; |
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365 | } |
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366 | dp->regs->ctrl |= GRETH_CTRL_RXEN; |
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367 | /*printf("rxptr: %i\n", dp->rx_ptr);*/ |
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368 | dp->rx_ptr = (dp->rx_ptr + 1) % dp->rxbufs; |
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369 | /*printf("RxDesc reenabled\n");*/ |
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370 | } |
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371 | } |
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372 | |
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373 | } |
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374 | |
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375 | static int inside = 0; |
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376 | static void |
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377 | sendpacket (struct ifnet *ifp, struct mbuf *m) |
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378 | { |
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379 | struct greth_softc *dp = ifp->if_softc; |
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380 | unsigned char *temp; |
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381 | struct mbuf *n; |
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382 | unsigned int len; |
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383 | |
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384 | /*printf("Send packet entered\n");*/ |
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385 | if (inside) printf ("error: sendpacket re-entered!!\n"); |
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386 | inside = 1; |
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387 | /* |
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388 | * Waiting for Transmitter ready |
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389 | */ |
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390 | n = m; |
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391 | |
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392 | while (dp->txdesc[dp->tx_ptr].ctrl & GRETH_TXD_ENABLE) |
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393 | { |
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394 | #ifdef GRETH_SUSPEND_NOTXBUF |
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395 | dp->txdesc[dp->tx_ptr].ctrl |= GRETH_TXD_IRQ; |
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396 | rtems_event_set events; |
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397 | rtems_bsdnet_event_receive (GRETH_TX_WAIT_EVENT, |
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398 | RTEMS_WAIT | RTEMS_EVENT_ANY, |
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399 | TOD_MILLISECONDS_TO_TICKS(500), &events); |
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400 | #endif |
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401 | } |
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402 | |
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403 | len = 0; |
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404 | temp = (unsigned char *) dp->txdesc[dp->tx_ptr].addr; |
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405 | #ifdef GRETH_DEBUG |
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406 | printf("TXD: 0x%08x\n", (int) m->m_data); |
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407 | #endif |
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408 | for (;;) |
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409 | { |
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410 | #ifdef GRETH_DEBUG |
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411 | int i; |
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412 | printf("MBUF: 0x%08x : ", (int) m->m_data); |
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413 | for (i=0;i<m->m_len;i++) |
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414 | printf("%x%x", (m->m_data[i] >> 4) & 0x0ff, m->m_data[i] & 0x0ff); |
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415 | printf("\n"); |
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416 | #endif |
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417 | len += m->m_len; |
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418 | if (len <= RBUF_SIZE) |
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419 | memcpy ((void *) temp, (char *) m->m_data, m->m_len); |
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420 | temp += m->m_len; |
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421 | if ((m = m->m_next) == NULL) |
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422 | break; |
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423 | } |
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424 | |
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425 | m_freem (n); |
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426 | |
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427 | /* don't send long packets */ |
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428 | |
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429 | if (len <= GRETH_MAXBUF_LEN) { |
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430 | if (dp->tx_ptr < dp->txbufs-1) { |
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431 | dp->txdesc[dp->tx_ptr].ctrl = GRETH_TXD_ENABLE | len; |
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432 | } else { |
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433 | dp->txdesc[dp->tx_ptr].ctrl = |
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434 | GRETH_TXD_WRAP | GRETH_TXD_ENABLE | len; |
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435 | } |
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436 | dp->regs->ctrl = dp->regs->ctrl | GRETH_CTRL_TXEN; |
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437 | dp->tx_ptr = (dp->tx_ptr + 1) % dp->txbufs; |
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438 | } |
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439 | inside = 0; |
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440 | } |
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441 | |
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442 | /* |
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443 | * Driver transmit daemon |
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444 | */ |
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445 | void |
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446 | greth_txDaemon (void *arg) |
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447 | { |
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448 | struct greth_softc *sc = (struct greth_softc *) arg; |
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449 | struct ifnet *ifp = &sc->arpcom.ac_if; |
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450 | struct mbuf *m; |
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451 | rtems_event_set events; |
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452 | |
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453 | for (;;) |
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454 | { |
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455 | /* |
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456 | * Wait for packet |
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457 | */ |
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458 | |
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459 | rtems_bsdnet_event_receive (START_TRANSMIT_EVENT, |
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460 | RTEMS_EVENT_ANY | RTEMS_WAIT, |
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461 | RTEMS_NO_TIMEOUT, &events); |
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462 | #ifdef GRETH_DEBUG |
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463 | printf ("t\n"); |
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464 | #endif |
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465 | |
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466 | /* |
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467 | * Send packets till queue is empty |
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468 | */ |
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469 | for (;;) |
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470 | { |
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471 | /* |
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472 | * Get the next mbuf chain to transmit. |
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473 | */ |
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474 | IF_DEQUEUE (&ifp->if_snd, m); |
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475 | if (!m) |
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476 | break; |
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477 | |
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478 | sendpacket (ifp, m); |
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479 | } |
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480 | ifp->if_flags &= ~IFF_OACTIVE; |
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481 | } |
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482 | } |
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483 | |
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484 | |
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485 | static void |
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486 | greth_start (struct ifnet *ifp) |
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487 | { |
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488 | struct greth_softc *sc = ifp->if_softc; |
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489 | |
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490 | ifp->if_flags |= IFF_OACTIVE; |
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491 | rtems_event_send (sc->txDaemonTid, START_TRANSMIT_EVENT); |
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492 | |
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493 | } |
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494 | |
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495 | /* |
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496 | * Initialize and start the device |
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497 | */ |
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498 | static void |
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499 | greth_init (void *arg) |
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500 | { |
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501 | struct greth_softc *sc = arg; |
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502 | struct ifnet *ifp = &sc->arpcom.ac_if; |
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503 | |
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504 | if (sc->txDaemonTid == 0) |
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505 | { |
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506 | |
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507 | /* |
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508 | * Set up GRETH hardware |
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509 | */ |
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510 | greth_initialize_hardware (sc); |
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511 | |
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512 | /* |
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513 | * Start driver tasks |
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514 | */ |
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515 | sc->rxDaemonTid = rtems_bsdnet_newproc ("DCrx", 4096, |
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516 | greth_rxDaemon, sc); |
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517 | sc->txDaemonTid = rtems_bsdnet_newproc ("DCtx", 4096, |
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518 | greth_txDaemon, sc); |
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519 | } |
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520 | |
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521 | /* |
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522 | * Tell the world that we're running. |
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523 | */ |
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524 | ifp->if_flags |= IFF_RUNNING; |
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525 | |
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526 | } |
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527 | |
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528 | /* |
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529 | * Stop the device |
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530 | */ |
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531 | static void |
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532 | greth_stop (struct greth_softc *sc) |
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533 | { |
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534 | struct ifnet *ifp = &sc->arpcom.ac_if; |
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535 | |
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536 | ifp->if_flags &= ~IFF_RUNNING; |
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537 | |
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538 | sc->regs->ctrl = 0; /* RX/TX OFF */ |
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539 | sc->regs->ctrl = GRETH_CTRL_RST; /* Reset ON */ |
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540 | sc->regs->ctrl = 0; /* Reset OFF */ |
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541 | } |
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542 | |
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543 | |
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544 | /* |
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545 | * Show interface statistics |
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546 | */ |
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547 | static void |
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548 | greth_stats (struct greth_softc *sc) |
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549 | { |
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550 | printf (" Rx Interrupts:%-8lu", sc->rxInterrupts); |
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551 | printf (" Rx Packets:%-8lu", sc->rxPackets); |
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552 | printf (" Length:%-8lu", sc->rxLengthError); |
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553 | printf (" Non-octet:%-8lu\n", sc->rxNonOctet); |
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554 | printf (" Bad CRC:%-8lu", sc->rxBadCRC); |
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555 | printf (" Overrun:%-8lu", sc->rxOverrun); |
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556 | printf (" Tx Interrupts:%-8lu", sc->txInterrupts); |
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557 | } |
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558 | |
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559 | /* |
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560 | * Driver ioctl handler |
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561 | */ |
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562 | static int |
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563 | greth_ioctl (struct ifnet *ifp, int command, caddr_t data) |
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564 | { |
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565 | struct greth_softc *sc = ifp->if_softc; |
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566 | int error = 0; |
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567 | |
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568 | switch (command) |
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569 | { |
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570 | case SIOCGIFADDR: |
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571 | case SIOCSIFADDR: |
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572 | ether_ioctl (ifp, command, data); |
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573 | break; |
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574 | |
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575 | case SIOCSIFFLAGS: |
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576 | switch (ifp->if_flags & (IFF_UP | IFF_RUNNING)) |
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577 | { |
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578 | case IFF_RUNNING: |
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579 | greth_stop (sc); |
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580 | break; |
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581 | |
---|
582 | case IFF_UP: |
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583 | greth_init (sc); |
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584 | break; |
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585 | |
---|
586 | case IFF_UP | IFF_RUNNING: |
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587 | greth_stop (sc); |
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588 | greth_init (sc); |
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589 | break; |
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590 | default: |
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591 | break; |
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592 | } |
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593 | break; |
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594 | |
---|
595 | case SIO_RTEMS_SHOW_STATS: |
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596 | greth_stats (sc); |
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597 | break; |
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598 | |
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599 | /* |
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600 | * FIXME: All sorts of multicast commands need to be added here! |
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601 | */ |
---|
602 | default: |
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603 | error = EINVAL; |
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604 | break; |
---|
605 | } |
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606 | |
---|
607 | return error; |
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608 | } |
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609 | |
---|
610 | /* |
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611 | * Attach an GRETH driver to the system |
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612 | */ |
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613 | int |
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614 | rtems_greth_driver_attach (struct rtems_bsdnet_ifconfig *config, |
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615 | greth_configuration_t *chip) |
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616 | { |
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617 | struct greth_softc *sc; |
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618 | struct ifnet *ifp; |
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619 | int mtu; |
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620 | int unitNumber; |
---|
621 | char *unitName; |
---|
622 | |
---|
623 | /* parse driver name */ |
---|
624 | if ((unitNumber = rtems_bsdnet_parse_driver_name (config, &unitName)) < 0) |
---|
625 | return 0; |
---|
626 | |
---|
627 | sc = &greth; |
---|
628 | ifp = &sc->arpcom.ac_if; |
---|
629 | memset (sc, 0, sizeof (*sc)); |
---|
630 | |
---|
631 | if (config->hardware_address) |
---|
632 | { |
---|
633 | memcpy (sc->arpcom.ac_enaddr, config->hardware_address, |
---|
634 | ETHER_ADDR_LEN); |
---|
635 | } |
---|
636 | else |
---|
637 | { |
---|
638 | memset (sc->arpcom.ac_enaddr, 0x08, ETHER_ADDR_LEN); |
---|
639 | } |
---|
640 | |
---|
641 | if (config->mtu) |
---|
642 | mtu = config->mtu; |
---|
643 | else |
---|
644 | mtu = ETHERMTU; |
---|
645 | |
---|
646 | sc->acceptBroadcast = !config->ignore_broadcast; |
---|
647 | sc->regs = (void *) chip->base_address; |
---|
648 | sc->vector = chip->vector; |
---|
649 | sc->txbufs = chip->txd_count; |
---|
650 | sc->rxbufs = chip->rxd_count; |
---|
651 | |
---|
652 | /* |
---|
653 | * Set up network interface values |
---|
654 | */ |
---|
655 | ifp->if_softc = sc; |
---|
656 | ifp->if_unit = unitNumber; |
---|
657 | ifp->if_name = unitName; |
---|
658 | ifp->if_mtu = mtu; |
---|
659 | ifp->if_init = greth_init; |
---|
660 | ifp->if_ioctl = greth_ioctl; |
---|
661 | ifp->if_start = greth_start; |
---|
662 | ifp->if_output = ether_output; |
---|
663 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX; |
---|
664 | if (ifp->if_snd.ifq_maxlen == 0) |
---|
665 | ifp->if_snd.ifq_maxlen = ifqmaxlen; |
---|
666 | |
---|
667 | /* |
---|
668 | * Attach the interface |
---|
669 | */ |
---|
670 | if_attach (ifp); |
---|
671 | ether_ifattach (ifp); |
---|
672 | |
---|
673 | #ifdef GRETH_DEBUG |
---|
674 | printf ("GRETH : driver has been attached\n"); |
---|
675 | #endif |
---|
676 | return 1; |
---|
677 | }; |
---|
678 | |
---|