1 | /*===============================================================*\ |
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2 | | Project: RTEMS generic MPC5200 BSP | |
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3 | +-----------------------------------------------------------------+ |
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4 | | Partially based on the code references which are named below. | |
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5 | | Adaptions, modifications, enhancements and any recent parts of | |
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6 | | the code are: | |
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7 | | Copyright (c) 2005 | |
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8 | | Embedded Brains GmbH | |
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9 | | Obere Lagerstr. 30 | |
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10 | | D-82178 Puchheim | |
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11 | | Germany | |
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12 | | rtems@embedded-brains.de | |
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13 | +-----------------------------------------------------------------+ |
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14 | | The license and distribution terms for this file may be | |
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15 | | found in the file LICENSE in this distribution or at | |
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16 | | | |
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17 | | http://www.rtems.com/license/LICENSE. | |
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18 | | | |
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19 | +-----------------------------------------------------------------+ |
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20 | | this file contains the networking driver | |
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21 | \*===============================================================*/ |
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22 | /* |
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23 | * RTEMS/TCPIP driver for MPC5200 FEC Ethernet |
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24 | * |
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25 | * Modified for Motorola MPC5200 by Thomas Doerfler, <Thomas.Doerfler@imd-systems.de> |
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26 | * COPYRIGHT (c) 2003, IMD |
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27 | * |
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28 | * Modified for Motorola IceCube (mgt5100) by Peter Rasmussen <prasmus@ipr-engineering.de> |
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29 | * COPYRIGHT (c) 2003, IPR Engineering |
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30 | * |
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31 | * Parts of code are also under property of Driver Information Systems and based |
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32 | * on Motorola Proprietary Information. |
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33 | * COPYRIGHT (c) 2002 MOTOROLA INC. |
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34 | * |
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35 | * Modified for MPC860 by Jay Monkman (jmonkman@frasca.com) |
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36 | * |
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37 | * This supports Ethernet on either SCC1 or the FEC of the MPC860T. |
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38 | * Right now, we only do 10 Mbps, even with the FEC. The function |
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39 | * rtems_enet_driver_attach determines which one to use. Currently, |
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40 | * only one may be used at a time. |
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41 | * |
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42 | * Based on the MC68360 network driver by |
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43 | * W. Eric Norum |
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44 | * Saskatchewan Accelerator Laboratory |
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45 | * University of Saskatchewan |
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46 | * Saskatoon, Saskatchewan, CANADA |
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47 | * eric@skatter.usask.ca |
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48 | * |
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49 | * This supports ethernet on SCC1. Right now, we only do 10 Mbps. |
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50 | * |
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51 | * Modifications by Darlene Stewart <Darlene.Stewart@iit.nrc.ca> |
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52 | * and Charles-Antoine Gauthier <charles.gauthier@iit.nrc.ca> |
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53 | * Copyright (c) 1999, National Research Council of Canada |
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54 | * |
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55 | */ |
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56 | |
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57 | #define __INSIDE_RTEMS_BSD_TCPIP_STACK__ 1 |
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58 | #define __BSD_VISIBLE 1 |
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59 | |
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60 | #include <rtems.h> |
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61 | #include <rtems/error.h> |
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62 | #include <rtems/rtems_bsdnet.h> |
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63 | #include <rtems/rtems_mii_ioctl.h> |
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64 | #include <stdio.h> |
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65 | #include <inttypes.h> |
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66 | #include <sys/param.h> |
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67 | #include <sys/mbuf.h> |
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68 | #include <sys/socket.h> |
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69 | #include <sys/sockio.h> |
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70 | #include <net/if.h> |
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71 | #include <netinet/in.h> |
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72 | #include <netinet/if_ether.h> |
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73 | #include <bsp.h> |
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74 | #include <bsp/irq.h> |
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75 | #include <bsp/mpc5200.h> |
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76 | #include <net/if_var.h> |
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77 | #include <errno.h> |
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78 | |
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79 | #include <bsp/bestcomm/include/ppctypes.h> |
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80 | #include <bsp/bestcomm/dma_image.h> |
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81 | #include <bsp/bestcomm/bestcomm_glue.h> |
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82 | #include <bsp/bestcomm/bestcomm_api.h> |
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83 | #include <bsp/bestcomm/task_api/bestcomm_cntrl.h> |
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84 | #include <bsp/bestcomm/task_api/tasksetup_bdtable.h> |
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85 | |
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86 | /* #define ETH_DEBUG */ |
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87 | |
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88 | #define FEC_BD_LAST TASK_BD_TFD |
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89 | #define FEC_BD_INT TASK_BD_INT |
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90 | #define FEC_BD_READY SDMA_BD_MASK_READY |
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91 | |
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92 | /* |
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93 | * Number of interfaces supported by this driver |
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94 | */ |
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95 | #define NIFACES 1 |
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96 | |
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97 | /* |
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98 | * Default number of buffer descriptors set aside for this driver. |
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99 | * The number of transmit buffer descriptors has to be quite large |
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100 | * since a single frame often uses four or more buffer descriptors. |
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101 | */ |
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102 | #define RX_BUF_COUNT 64 |
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103 | #define TX_BUF_COUNT 64 |
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104 | |
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105 | #define INET_ADDR_MAX_BUF_SIZE (sizeof "255.255.255.255") |
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106 | |
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107 | #define FEC_EVENT RTEMS_EVENT_0 |
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108 | |
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109 | /* Task number assignment */ |
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110 | #define FEC_RECV_TASK_NO TASK_FEC_RX |
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111 | #define FEC_XMIT_TASK_NO TASK_FEC_TX |
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112 | |
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113 | |
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114 | /* BD and parameters are stored in SRAM(refer to sdma.h) */ |
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115 | #define MPC5200_FEC_BD_BASE ETH_BD_BASE |
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116 | |
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117 | /* FEC transmit watermark settings */ |
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118 | #define MPC5200_FEC_X_WMRK_64 0x0 /* or 0x1 */ |
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119 | #define MPC5200_FEC_X_WMRK_128 0x2 |
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120 | #define MPC5200_FEC_X_WMRK_192 0x3 |
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121 | |
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122 | /* RBD bits definitions */ |
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123 | #define MPC5200_FEC_RBD_EMPTY 0x8000 /* Buffer is empty */ |
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124 | #define MPC5200_FEC_RBD_WRAP 0x2000 /* Last BD in ring */ |
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125 | #define MPC5200_FEC_RBD_INT 0x1000 /* Interrupt */ |
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126 | #define MPC5200_FEC_RBD_LAST 0x0800 /* Buffer is last in frame(useless) */ |
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127 | #define MPC5200_FEC_RBD_MISS 0x0100 /* Miss bit for prom mode */ |
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128 | #define MPC5200_FEC_RBD_BC 0x0080 /* The received frame is broadcast frame */ |
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129 | #define MPC5200_FEC_RBD_MC 0x0040 /* The received frame is multicast frame */ |
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130 | #define MPC5200_FEC_RBD_LG 0x0020 /* Frame length violation */ |
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131 | #define MPC5200_FEC_RBD_NO 0x0010 /* Nonoctet align frame */ |
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132 | #define MPC5200_FEC_RBD_SH 0x0008 /* Short frame, FEC does not support SH and this bit is always cleared */ |
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133 | #define MPC5200_FEC_RBD_CR 0x0004 /* CRC error */ |
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134 | #define MPC5200_FEC_RBD_OV 0x0002 /* Receive FIFO overrun */ |
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135 | #define MPC5200_FEC_RBD_TR 0x0001 /* The receive frame is truncated */ |
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136 | #define MPC5200_FEC_RBD_ERR (MPC5200_FEC_RBD_LG | \ |
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137 | MPC5200_FEC_RBD_NO | \ |
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138 | MPC5200_FEC_RBD_CR | \ |
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139 | MPC5200_FEC_RBD_OV | \ |
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140 | MPC5200_FEC_RBD_TR) |
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141 | |
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142 | /* TBD bits definitions */ |
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143 | #define MPC5200_FEC_TBD_READY 0x8000 /* Buffer is ready */ |
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144 | #define MPC5200_FEC_TBD_WRAP 0x2000 /* Last BD in ring */ |
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145 | #define MPC5200_FEC_TBD_INT 0x1000 /* Interrupt */ |
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146 | #define MPC5200_FEC_TBD_LAST 0x0800 /* Buffer is last in frame */ |
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147 | #define MPC5200_FEC_TBD_TC 0x0400 /* Transmit the CRC */ |
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148 | #define MPC5200_FEC_TBD_ABC 0x0200 /* Append bad CRC */ |
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149 | |
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150 | /* MII-related definitios */ |
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151 | #define MPC5200_FEC_MII_DATA_ST 0x40000000 /* Start of frame delimiter */ |
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152 | #define MPC5200_FEC_MII_DATA_OP_RD 0x20000000 /* Perform a read operation */ |
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153 | #define MPC5200_FEC_MII_DATA_OP_WR 0x10000000 /* Perform a write operation */ |
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154 | #define MPC5200_FEC_MII_DATA_PA_MSK 0x0f800000 /* PHY Address field mask */ |
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155 | #define MPC5200_FEC_MII_DATA_RA_MSK 0x007c0000 /* PHY Register field mask */ |
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156 | #define MPC5200_FEC_MII_DATA_TA 0x00020000 /* Turnaround */ |
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157 | #define MPC5200_FEC_MII_DATA_DATAMSK 0x0000fff /* PHY data field */ |
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158 | |
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159 | #define MPC5200_FEC_MII_DATA_RA_SHIFT 0x12 /* MII Register address bits */ |
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160 | #define MPC5200_FEC_MII_DATA_PA_SHIFT 0x17 /* MII PHY address bits */ |
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161 | |
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162 | #define FEC_INTR_MASK_USED \ |
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163 | (FEC_INTR_LCEN |FEC_INTR_CRLEN |\ |
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164 | FEC_INTR_XFUNEN|FEC_INTR_XFERREN|FEC_INTR_RFERREN) |
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165 | |
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166 | typedef enum { |
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167 | FEC_STATE_RESTART_0, |
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168 | FEC_STATE_RESTART_1, |
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169 | FEC_STATE_NORMAL, |
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170 | } mpc5200_fec_state; |
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171 | |
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172 | /* |
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173 | * Device data |
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174 | */ |
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175 | typedef struct { |
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176 | struct arpcom arpcom; |
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177 | struct mbuf **rxMbuf; |
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178 | struct mbuf **txMbuf; |
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179 | mpc5200_fec_state state; |
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180 | int acceptBroadcast; |
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181 | int rxBdCount; |
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182 | int txBdCount; |
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183 | int txBdHead; |
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184 | int txBdTail; |
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185 | int txBdActiveCount; |
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186 | |
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187 | rtems_id rxDaemonTid; |
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188 | rtems_id txDaemonTid; |
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189 | |
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190 | unsigned long rxInterrupts; |
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191 | unsigned long rxNotLast; |
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192 | unsigned long rxGiant; |
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193 | unsigned long rxNonOctet; |
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194 | unsigned long rxBadCRC; |
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195 | unsigned long rxFIFOError; |
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196 | unsigned long rxCollision; |
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197 | |
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198 | unsigned long txInterrupts; |
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199 | unsigned long txDeferred; |
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200 | unsigned long txLateCollision; |
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201 | unsigned long txUnderrun; |
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202 | unsigned long txFIFOError; |
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203 | unsigned long txMisaligned; |
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204 | unsigned long rxNotFirst; |
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205 | unsigned long txRetryLimit; |
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206 | |
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207 | struct rtems_mdio_info mdio; |
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208 | int phyAddr; |
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209 | bool phyInitialized; |
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210 | } mpc5200_fec_context; |
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211 | |
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212 | static mpc5200_fec_context enet_driver[NIFACES]; |
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213 | |
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214 | static void mpc5200_fec_send_event(rtems_id task) |
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215 | { |
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216 | rtems_event_send(task, FEC_EVENT); |
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217 | } |
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218 | |
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219 | static void mpc5200_fec_wait_for_event(void) |
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220 | { |
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221 | rtems_event_set out; |
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222 | rtems_bsdnet_event_receive( |
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223 | FEC_EVENT, |
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224 | RTEMS_EVENT_ANY | RTEMS_WAIT, |
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225 | RTEMS_NO_TIMEOUT, |
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226 | &out |
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227 | ); |
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228 | } |
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229 | |
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230 | static void mpc5200_fec_stop_dma(void) |
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231 | { |
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232 | TaskStop(FEC_RECV_TASK_NO); |
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233 | TaskStop(FEC_XMIT_TASK_NO); |
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234 | } |
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235 | |
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236 | static void mpc5200_fec_request_restart(mpc5200_fec_context *self) |
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237 | { |
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238 | self->state = FEC_STATE_RESTART_0; |
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239 | mpc5200_fec_send_event(self->txDaemonTid); |
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240 | mpc5200_fec_send_event(self->rxDaemonTid); |
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241 | } |
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242 | |
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243 | static void mpc5200_fec_start_dma_and_controller(void) |
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244 | { |
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245 | TaskStart(FEC_RECV_TASK_NO, 1, FEC_RECV_TASK_NO, 1); |
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246 | TaskStart(FEC_XMIT_TASK_NO, 1, FEC_XMIT_TASK_NO, 1); |
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247 | |
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248 | mpc5200.ecntrl |= FEC_ECNTRL_OE | FEC_ECNTRL_EN; |
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249 | } |
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250 | |
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251 | /* |
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252 | * Function: MPC5200_eth_addr_filter_set |
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253 | * |
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254 | * Description: Set individual address filter for unicast address and |
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255 | * set physical address registers. |
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256 | * |
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257 | * Returns: void |
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258 | * |
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259 | * Notes: |
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260 | * |
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261 | */ |
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262 | static void mpc5200_eth_addr_filter_set(mpc5200_fec_context *self) { |
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263 | unsigned char *mac; |
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264 | unsigned char currByte; /* byte for which to compute the CRC */ |
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265 | int byte; /* loop - counter */ |
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266 | int bit; /* loop - counter */ |
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267 | unsigned long crc = 0xffffffff; /* initial value */ |
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268 | |
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269 | /* |
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270 | * Get the mac address of ethernet controller |
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271 | */ |
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272 | mac = (unsigned char *)(&self->arpcom.ac_enaddr); |
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273 | |
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274 | /* |
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275 | * The algorithm used is the following: |
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276 | * we loop on each of the six bytes of the provided address, |
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277 | * and we compute the CRC by left-shifting the previous |
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278 | * value by one position, so that each bit in the current |
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279 | * byte of the address may contribute the calculation. If |
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280 | * the latter and the MSB in the CRC are different, then |
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281 | * the CRC value so computed is also ex-ored with the |
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282 | * "polynomium generator". The current byte of the address |
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283 | * is also shifted right by one bit at each iteration. |
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284 | * This is because the CRC generatore in hardware is implemented |
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285 | * as a shift-register with as many ex-ores as the radixes |
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286 | * in the polynomium. This suggests that we represent the |
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287 | * polynomiumm itself as a 32-bit constant. |
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288 | */ |
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289 | for(byte = 0; byte < 6; byte++) |
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290 | { |
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291 | |
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292 | currByte = mac[byte]; |
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293 | |
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294 | for(bit = 0; bit < 8; bit++) |
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295 | { |
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296 | |
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297 | if((currByte & 0x01) ^ (crc & 0x01)) |
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298 | { |
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299 | |
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300 | crc >>= 1; |
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301 | crc = crc ^ 0xedb88320; |
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302 | |
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303 | } |
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304 | else |
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305 | { |
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306 | |
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307 | crc >>= 1; |
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308 | |
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309 | } |
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310 | |
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311 | currByte >>= 1; |
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312 | |
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313 | } |
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314 | |
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315 | } |
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316 | |
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317 | crc = crc >> 26; |
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318 | |
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319 | /* |
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320 | * Set individual hash table register |
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321 | */ |
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322 | if(crc >= 32) |
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323 | { |
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324 | |
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325 | mpc5200.iaddr1 = (1 << (crc - 32)); |
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326 | mpc5200.iaddr2 = 0; |
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327 | |
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328 | } |
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329 | else |
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330 | { |
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331 | |
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332 | mpc5200.iaddr1 = 0; |
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333 | mpc5200.iaddr2 = (1 << crc); |
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334 | |
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335 | } |
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336 | |
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337 | /* |
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338 | * Set physical address |
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339 | */ |
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340 | mpc5200.paddr1 = (mac[0] << 24) + (mac[1] << 16) + (mac[2] << 8) + mac[3]; |
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341 | mpc5200.paddr2 = (mac[4] << 24) + (mac[5] << 16) + 0x8808; |
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342 | |
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343 | } |
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344 | |
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345 | static int mpc5200_eth_mii_transfer( |
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346 | int phyAddr, |
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347 | unsigned regAddr, |
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348 | uint32_t data |
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349 | ) |
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350 | { |
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351 | int timeout = 0xffff; |
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352 | |
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353 | mpc5200.ievent = FEC_INTR_MII; |
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354 | |
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355 | mpc5200.mii_data = MPC5200_FEC_MII_DATA_ST |
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356 | | MPC5200_FEC_MII_DATA_TA |
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357 | | (phyAddr << MPC5200_FEC_MII_DATA_PA_SHIFT) |
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358 | | (regAddr << MPC5200_FEC_MII_DATA_RA_SHIFT) |
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359 | | data; |
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360 | |
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361 | while (timeout > 0 && (mpc5200.ievent & FEC_INTR_MII) == 0) { |
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362 | --timeout; |
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363 | } |
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364 | |
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365 | return timeout > 0 ? 0 : -1; |
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366 | } |
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367 | |
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368 | /* FIXME: Make this static, this needs a fix in an application */ |
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369 | int mpc5200_eth_mii_read( |
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370 | int phyAddr, |
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371 | void *arg, |
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372 | unsigned regAddr, |
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373 | uint32_t *retVal |
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374 | ) |
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375 | { |
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376 | int rv = mpc5200_eth_mii_transfer( |
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377 | phyAddr, |
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378 | regAddr, |
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379 | MPC5200_FEC_MII_DATA_OP_RD |
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380 | ); |
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381 | |
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382 | *retVal = mpc5200.mii_data & 0xffff; |
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383 | |
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384 | return rv; |
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385 | } |
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386 | |
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387 | static int mpc5200_eth_mii_write( |
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388 | int phyAddr, |
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389 | void *arg, |
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390 | unsigned regAddr, |
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391 | uint32_t data |
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392 | ) |
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393 | { |
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394 | return mpc5200_eth_mii_transfer( |
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395 | phyAddr, |
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396 | regAddr, |
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397 | MPC5200_FEC_MII_DATA_OP_WR | data |
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398 | ); |
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399 | } |
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400 | |
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401 | |
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402 | /* |
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403 | * Reset a running ethernet driver including the hardware FIFOs and the FEC. |
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404 | */ |
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405 | static void mpc5200_fec_reset(mpc5200_fec_context *self) |
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406 | { |
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407 | volatile int delay; |
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408 | /* |
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409 | * Clear FIFO status registers |
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410 | */ |
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411 | mpc5200.rfifo_status &= FEC_FIFO_STAT_ERROR; |
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412 | mpc5200.tfifo_status &= FEC_FIFO_STAT_ERROR; |
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413 | |
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414 | /* |
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415 | * reset the FIFOs |
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416 | */ |
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417 | mpc5200.reset_cntrl = 0x03000000; |
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418 | |
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419 | for (delay = 0;delay < 16*4;delay++) {}; |
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420 | |
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421 | mpc5200.reset_cntrl = 0x01000000; |
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422 | |
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423 | /* |
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424 | * Issue a reset command to the FEC chip |
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425 | */ |
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426 | mpc5200.ecntrl |= FEC_ECNTRL_RESET; |
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427 | |
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428 | /* |
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429 | * wait at least 16 clock cycles |
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430 | */ |
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431 | for (delay = 0;delay < 16*4;delay++) {}; |
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432 | } |
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433 | |
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434 | |
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435 | /* |
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436 | * Function: mpc5200_fec_off |
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437 | * |
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438 | * Description: Stop the FEC and disable the ethernet SmartComm tasks. |
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439 | * This function "turns off" the driver. |
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440 | * |
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441 | * Returns: void |
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442 | * |
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443 | * Notes: |
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444 | * |
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445 | */ |
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446 | void mpc5200_fec_off(mpc5200_fec_context *self) |
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447 | { |
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448 | int counter = 0xffff; |
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449 | |
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450 | |
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451 | #if defined(ETH_DEBUG) |
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452 | uint32_t phyStatus; |
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453 | int i; |
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454 | |
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455 | for(i = 0; i < 9; i++) |
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456 | { |
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457 | |
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458 | mpc5200_eth_mii_read(self->phyAddr, self, i, &phyStatus); |
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459 | printf ("Mii reg %d: 0x%04" PRIx32 "\r\n", i, phyStatus); |
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460 | |
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461 | } |
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462 | |
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463 | for(i = 16; i < 21; i++) |
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464 | { |
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465 | |
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466 | mpc5200_eth_mii_read(self->phyAddr, self, i, &phyStatus); |
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467 | printf ("Mii reg %d: 0x%04" PRIx32 "\r\n", i, phyStatus); |
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468 | |
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469 | } |
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470 | #endif /* ETH_DEBUG */ |
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471 | |
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472 | /* |
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473 | * block FEC chip interrupts |
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474 | */ |
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475 | mpc5200.imask = 0; |
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476 | |
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477 | /* |
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478 | * issue graceful stop command to the FEC transmitter if necessary |
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479 | */ |
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480 | mpc5200.x_cntrl |= FEC_XCNTRL_GTS; |
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481 | |
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482 | /* |
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483 | * wait for graceful stop to register |
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484 | * FIXME: add rtems_task_wake_after here, if it takes to long |
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485 | */ |
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486 | while((counter--) && (!(mpc5200.ievent & FEC_INTR_GRA))); |
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487 | |
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488 | mpc5200_fec_stop_dma(); |
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489 | |
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490 | /* |
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491 | * Disable transmit / receive interrupts |
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492 | */ |
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493 | bestcomm_glue_irq_disable(FEC_XMIT_TASK_NO); |
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494 | bestcomm_glue_irq_disable(FEC_RECV_TASK_NO); |
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495 | |
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496 | /* |
---|
497 | * Disable the Ethernet Controller |
---|
498 | */ |
---|
499 | mpc5200.ecntrl &= ~(FEC_ECNTRL_OE | FEC_ECNTRL_EN); |
---|
500 | } |
---|
501 | |
---|
502 | /* |
---|
503 | * MPC5200 FEC interrupt handler |
---|
504 | */ |
---|
505 | void mpc5200_fec_irq_handler(rtems_irq_hdl_param handle) |
---|
506 | { |
---|
507 | mpc5200_fec_context *self = (mpc5200_fec_context *) handle; |
---|
508 | volatile uint32_t ievent; |
---|
509 | |
---|
510 | ievent = mpc5200.ievent; |
---|
511 | |
---|
512 | mpc5200.ievent = ievent; |
---|
513 | /* |
---|
514 | * check errors, update statistics |
---|
515 | */ |
---|
516 | if (ievent & FEC_INTR_LATE_COL) { |
---|
517 | self->txLateCollision++; |
---|
518 | } |
---|
519 | if (ievent & FEC_INTR_COL_RETRY) { |
---|
520 | self->txRetryLimit++; |
---|
521 | } |
---|
522 | if (ievent & FEC_INTR_XFIFO_UN) { |
---|
523 | self->txUnderrun++; |
---|
524 | } |
---|
525 | if (ievent & FEC_INTR_XFIFO_ERR) { |
---|
526 | self->txFIFOError++; |
---|
527 | } |
---|
528 | if (ievent & FEC_INTR_RFIFO_ERR) { |
---|
529 | self->rxFIFOError++; |
---|
530 | } |
---|
531 | /* |
---|
532 | * fatal error ocurred? |
---|
533 | */ |
---|
534 | if (ievent & (FEC_INTR_XFIFO_ERR | FEC_INTR_RFIFO_ERR)) { |
---|
535 | mpc5200.imask &= ~(FEC_INTR_XFERREN | FEC_INTR_RFERREN); |
---|
536 | mpc5200_fec_request_restart(self); |
---|
537 | } |
---|
538 | } |
---|
539 | |
---|
540 | void mpc5200_smartcomm_rx_irq_handler(void *arg) |
---|
541 | { |
---|
542 | mpc5200_fec_context *self = arg; |
---|
543 | |
---|
544 | ++self->rxInterrupts; |
---|
545 | mpc5200_fec_send_event(self->rxDaemonTid); |
---|
546 | SDMA_CLEAR_IEVENT(&mpc5200.sdma.IntPend, FEC_RECV_TASK_NO); |
---|
547 | bestcomm_glue_irq_disable(FEC_RECV_TASK_NO); |
---|
548 | } |
---|
549 | |
---|
550 | void mpc5200_smartcomm_tx_irq_handler(void *arg) |
---|
551 | { |
---|
552 | mpc5200_fec_context *self = arg; |
---|
553 | |
---|
554 | ++self->txInterrupts; |
---|
555 | mpc5200_fec_send_event(self->txDaemonTid); |
---|
556 | SDMA_CLEAR_IEVENT(&mpc5200.sdma.IntPend, FEC_XMIT_TASK_NO); |
---|
557 | bestcomm_glue_irq_disable(FEC_XMIT_TASK_NO); |
---|
558 | } |
---|
559 | |
---|
560 | static void mpc5200_fec_init_mib(mpc5200_fec_context *self) |
---|
561 | { |
---|
562 | memset(&mpc5200.RES [0], 0, 0x2e4); |
---|
563 | mpc5200.mib_control = 0x40000000; |
---|
564 | } |
---|
565 | |
---|
566 | /* |
---|
567 | * Function: mpc5200_fec_initialize_hardware |
---|
568 | * |
---|
569 | * Description: Configure the MPC5200 FEC registers and enable the |
---|
570 | * SmartComm tasks. This function "turns on" the driver. |
---|
571 | * |
---|
572 | * Returns: void |
---|
573 | * |
---|
574 | * Notes: |
---|
575 | * |
---|
576 | */ |
---|
577 | static void mpc5200_fec_initialize_hardware(mpc5200_fec_context *self) |
---|
578 | { |
---|
579 | /* We want at most 2.5MHz */ |
---|
580 | uint32_t div = 2 * 2500000; |
---|
581 | uint32_t mii_speed = (IPB_CLOCK + div - 1) / div; |
---|
582 | |
---|
583 | /* |
---|
584 | * Reset mpc5200 FEC |
---|
585 | */ |
---|
586 | mpc5200_fec_reset(self); |
---|
587 | mpc5200_fec_init_mib(self); |
---|
588 | |
---|
589 | /* |
---|
590 | * Clear FEC-Lite interrupt event register (IEVENT) |
---|
591 | */ |
---|
592 | mpc5200.ievent = FEC_INTR_CLEAR_ALL; |
---|
593 | |
---|
594 | /* |
---|
595 | * Set interrupt mask register |
---|
596 | */ |
---|
597 | mpc5200.imask = FEC_INTR_MASK_USED; |
---|
598 | /* |
---|
599 | * Set FEC-Lite receive control register (R_CNTRL) |
---|
600 | * frame length=1518, MII mode for 18-wire-transceiver |
---|
601 | */ |
---|
602 | mpc5200.r_cntrl = ((ETHER_MAX_LEN << FEC_RCNTRL_MAX_FL_SHIFT) |
---|
603 | | FEC_RCNTRL_FCE |
---|
604 | | FEC_RCNTRL_MII_MODE); |
---|
605 | |
---|
606 | /* |
---|
607 | * Set FEC-Lite transmit control register (X_CNTRL) |
---|
608 | * full-duplex, heartbeat disabled |
---|
609 | */ |
---|
610 | mpc5200.x_cntrl = FEC_XCNTRL_FDEN; |
---|
611 | |
---|
612 | |
---|
613 | |
---|
614 | /* |
---|
615 | * Set MII_SPEED = IPB clock / (2 * mii_speed)) |
---|
616 | * and do not drop the Preamble. |
---|
617 | */ |
---|
618 | mpc5200.mii_speed = mii_speed << 1; |
---|
619 | |
---|
620 | /* |
---|
621 | * Set Opcode/Pause Duration Register |
---|
622 | */ |
---|
623 | mpc5200.op_pause = 0x00010020; |
---|
624 | |
---|
625 | /* |
---|
626 | * Set Rx FIFO alarm and granularity value |
---|
627 | */ |
---|
628 | mpc5200.rfifo_cntrl = (FEC_FIFO_CNTRL_FRAME |
---|
629 | | (0x7 << FEC_FIFO_CNTRL_GR_SHIFT)); |
---|
630 | mpc5200.rfifo_alarm = 0x0000030c; |
---|
631 | |
---|
632 | /* |
---|
633 | * Set Tx FIFO granularity value |
---|
634 | */ |
---|
635 | mpc5200.tfifo_cntrl = (FEC_FIFO_CNTRL_FRAME |
---|
636 | | (0x7 << FEC_FIFO_CNTRL_GR_SHIFT)); |
---|
637 | |
---|
638 | /* |
---|
639 | * Set transmit fifo watermark register (X_WMRK), default = 64 |
---|
640 | */ |
---|
641 | mpc5200.tfifo_alarm = 0x00000100; /* 256 bytes */ |
---|
642 | mpc5200.x_wmrk = FEC_XWMRK_256; /* 256 bytes */ |
---|
643 | |
---|
644 | /* |
---|
645 | * Set individual address filter for unicast address |
---|
646 | * and set physical address registers. |
---|
647 | */ |
---|
648 | mpc5200_eth_addr_filter_set(self); |
---|
649 | |
---|
650 | /* |
---|
651 | * Set multicast address filter |
---|
652 | */ |
---|
653 | mpc5200.gaddr1 = 0x00000000; |
---|
654 | mpc5200.gaddr2 = 0x00000000; |
---|
655 | |
---|
656 | /* |
---|
657 | * enable CRC in finite state machine register |
---|
658 | */ |
---|
659 | mpc5200.xmit_fsm = FEC_FSM_CRC | FEC_FSM_ENFSM; |
---|
660 | } |
---|
661 | |
---|
662 | /* |
---|
663 | * Initialize PHY(LXT971A): |
---|
664 | * |
---|
665 | * Generally, on power up, the LXT971A reads its configuration |
---|
666 | * pins to check for forced operation, If not cofigured for |
---|
667 | * forced operation, it uses auto-negotiation/parallel detection |
---|
668 | * to automatically determine line operating conditions. |
---|
669 | * If the PHY device on the other side of the link supports |
---|
670 | * auto-negotiation, the LXT971A auto-negotiates with it |
---|
671 | * using Fast Link Pulse(FLP) Bursts. If the PHY partner does not |
---|
672 | * support auto-negotiation, the LXT971A automatically detects |
---|
673 | * the presence of either link pulses(10Mbps PHY) or Idle |
---|
674 | * symbols(100Mbps) and sets its operating conditions accordingly. |
---|
675 | * |
---|
676 | * When auto-negotiation is controlled by software, the following |
---|
677 | * steps are recommended. |
---|
678 | * |
---|
679 | * Note: |
---|
680 | * The physical address is dependent on hardware configuration. |
---|
681 | * |
---|
682 | * Returns: void |
---|
683 | * |
---|
684 | * Notes: |
---|
685 | * |
---|
686 | */ |
---|
687 | static void mpc5200_fec_initialize_phy(mpc5200_fec_context *self) |
---|
688 | { |
---|
689 | if (self->phyInitialized) { |
---|
690 | return; |
---|
691 | } else { |
---|
692 | self->phyInitialized = true; |
---|
693 | } |
---|
694 | |
---|
695 | /* |
---|
696 | * Reset PHY, then delay 300ns |
---|
697 | */ |
---|
698 | mpc5200_eth_mii_write(self->phyAddr, self, 0x0, 0x8000); |
---|
699 | |
---|
700 | rtems_task_wake_after(2); |
---|
701 | |
---|
702 | /* MII100 */ |
---|
703 | |
---|
704 | /* |
---|
705 | * Set the auto-negotiation advertisement register bits |
---|
706 | */ |
---|
707 | mpc5200_eth_mii_write(self->phyAddr, self, 0x4, 0x01e1); |
---|
708 | |
---|
709 | /* |
---|
710 | * Set MDIO bit 0.12 = 1(&& bit 0.9=1?) to enable auto-negotiation |
---|
711 | */ |
---|
712 | mpc5200_eth_mii_write(self->phyAddr, self, 0x0, 0x1200); |
---|
713 | |
---|
714 | /* |
---|
715 | * Wait for AN completion |
---|
716 | */ |
---|
717 | #if 0 |
---|
718 | int timeout = 0x100; |
---|
719 | uint32_t phyStatus; |
---|
720 | do |
---|
721 | { |
---|
722 | |
---|
723 | rtems_task_wake_after(2); |
---|
724 | |
---|
725 | if((timeout--) == 0) |
---|
726 | { |
---|
727 | |
---|
728 | #if defined(ETH_DEBUG) |
---|
729 | printf ("MPC5200FEC PHY auto neg failed." "\r\n"); |
---|
730 | #endif |
---|
731 | |
---|
732 | } |
---|
733 | |
---|
734 | if(mpc5200_eth_mii_read(self->phyAddr, self, 0x1, &phyStatus) != true) |
---|
735 | { |
---|
736 | |
---|
737 | #if defined(ETH_DEBUG) |
---|
738 | printf ("MPC5200FEC PHY auto neg failed: 0x%04" PRIx32 ".\r\n", phyStatus); |
---|
739 | #endif |
---|
740 | |
---|
741 | return; |
---|
742 | |
---|
743 | } |
---|
744 | |
---|
745 | } while((phyStatus & 0x0020) != 0x0020); |
---|
746 | |
---|
747 | #endif |
---|
748 | #if ETH_PROMISCOUS_MODE |
---|
749 | mpc5200.r_cntrl |= 0x00000008; /* set to promiscous mode */ |
---|
750 | #endif |
---|
751 | |
---|
752 | #if ETH_LOOP_MODE |
---|
753 | mpc5200.r_cntrl |= 0x00000001; /* set to loop mode */ |
---|
754 | #endif |
---|
755 | |
---|
756 | #if defined(ETH_DEBUG) |
---|
757 | int i; |
---|
758 | uint32_t phyStatus; |
---|
759 | /* |
---|
760 | * Print PHY registers after initialization. |
---|
761 | */ |
---|
762 | for(i = 0; i < 9; i++) |
---|
763 | { |
---|
764 | |
---|
765 | mpc5200_eth_mii_read(self->phyAddr, self, i, &phyStatus); |
---|
766 | printf ("Mii reg %d: 0x%04" PRIx32 "\r\n", i, phyStatus); |
---|
767 | |
---|
768 | } |
---|
769 | |
---|
770 | for(i = 16; i < 21; i++) |
---|
771 | { |
---|
772 | |
---|
773 | mpc5200_eth_mii_read(self->phyAddr, self, i, &phyStatus); |
---|
774 | printf ("Mii reg %d: 0x%04" PRIx32 "\r\n", i, phyStatus); |
---|
775 | |
---|
776 | } |
---|
777 | #endif /* ETH_DEBUG */ |
---|
778 | |
---|
779 | } |
---|
780 | |
---|
781 | static void mpc5200_fec_restart(mpc5200_fec_context *self, rtems_id otherDaemon) |
---|
782 | { |
---|
783 | if (self->state == FEC_STATE_RESTART_1) { |
---|
784 | mpc5200_fec_initialize_hardware(self); |
---|
785 | mpc5200_fec_initialize_phy(self); |
---|
786 | mpc5200_fec_start_dma_and_controller(); |
---|
787 | self->state = FEC_STATE_NORMAL; |
---|
788 | } else { |
---|
789 | self->state = FEC_STATE_RESTART_1; |
---|
790 | } |
---|
791 | |
---|
792 | mpc5200_fec_send_event(otherDaemon); |
---|
793 | while (self->state != FEC_STATE_NORMAL) { |
---|
794 | mpc5200_fec_wait_for_event(); |
---|
795 | } |
---|
796 | } |
---|
797 | |
---|
798 | /* |
---|
799 | * Send packet (caller provides header). |
---|
800 | */ |
---|
801 | static void mpc5200_fec_tx_start(struct ifnet *ifp) |
---|
802 | { |
---|
803 | |
---|
804 | mpc5200_fec_context *self = ifp->if_softc; |
---|
805 | |
---|
806 | ifp->if_flags |= IFF_OACTIVE; |
---|
807 | |
---|
808 | mpc5200_fec_send_event(self->txDaemonTid); |
---|
809 | |
---|
810 | } |
---|
811 | |
---|
812 | static TaskBD1_t *mpc5200_fec_init_tx_dma(int bdCount, struct mbuf **mbufs) |
---|
813 | { |
---|
814 | TaskSetupParamSet_t param = { |
---|
815 | .NumBD = bdCount, |
---|
816 | .Size = { |
---|
817 | .MaxBuf = ETHER_MAX_LEN |
---|
818 | }, |
---|
819 | .Initiator = 0, |
---|
820 | .StartAddrSrc = 0, |
---|
821 | .IncrSrc = sizeof(uint32_t), |
---|
822 | .SzSrc = sizeof(uint32_t), |
---|
823 | .StartAddrDst = (uint32) &mpc5200.tfifo_data, |
---|
824 | .IncrDst = 0, |
---|
825 | .SzDst = sizeof(uint32_t) |
---|
826 | }; |
---|
827 | int bdIndex = 0; |
---|
828 | |
---|
829 | TaskSetup(FEC_XMIT_TASK_NO, ¶m); |
---|
830 | |
---|
831 | for (bdIndex = 0; bdIndex < bdCount; ++bdIndex) { |
---|
832 | mbufs [bdIndex] = NULL; |
---|
833 | } |
---|
834 | |
---|
835 | return (TaskBD1_t *) TaskGetBDRing(FEC_XMIT_TASK_NO); |
---|
836 | } |
---|
837 | |
---|
838 | #if 0 |
---|
839 | static void mpc5200_fec_requeue_and_discard_tx_frames( |
---|
840 | int bdIndex, |
---|
841 | int bdCount, |
---|
842 | TaskBD1_t *bdRing, |
---|
843 | struct mbuf **mbufs |
---|
844 | ) |
---|
845 | { |
---|
846 | int bdStop = bdIndex; |
---|
847 | struct mbuf *previous = NULL; |
---|
848 | |
---|
849 | do { |
---|
850 | struct mbuf *current = NULL; |
---|
851 | uint32 status = 0; |
---|
852 | TaskBD1_t *bd = NULL; |
---|
853 | |
---|
854 | if (bdIndex > 1) { |
---|
855 | --bdIndex; |
---|
856 | } else { |
---|
857 | bdIndex = bdCount - 1; |
---|
858 | } |
---|
859 | |
---|
860 | current = mbufs [bdIndex]; |
---|
861 | mbufs [bdIndex] = NULL; |
---|
862 | |
---|
863 | status = bdRing [bdIndex].Status; |
---|
864 | bdRing [bdIndex].Status = 0; |
---|
865 | |
---|
866 | if (current != NULL) { |
---|
867 | if ((status & FEC_BD_LAST) != 0) { |
---|
868 | if (previous != NULL) { |
---|
869 | IF_PREPEND(&ifp->if_snd, previous); |
---|
870 | } |
---|
871 | } |
---|
872 | } else { |
---|
873 | break; |
---|
874 | } |
---|
875 | |
---|
876 | previous = current; |
---|
877 | } while (bdIndex != bdStop); |
---|
878 | } |
---|
879 | #endif |
---|
880 | |
---|
881 | static void mpc5200_fec_discard_tx_frames( |
---|
882 | int bdCount, |
---|
883 | struct mbuf **mbufs |
---|
884 | ) |
---|
885 | { |
---|
886 | int bdIndex = 0; |
---|
887 | |
---|
888 | for (bdIndex = 0; bdIndex < bdCount; ++bdIndex) { |
---|
889 | struct mbuf *m = mbufs [bdIndex]; |
---|
890 | |
---|
891 | if (m != NULL) { |
---|
892 | mbufs [bdIndex] = NULL; |
---|
893 | m_free(m); |
---|
894 | } |
---|
895 | } |
---|
896 | } |
---|
897 | |
---|
898 | static void mpc5200_fec_reset_tx_dma( |
---|
899 | int bdCount, |
---|
900 | TaskBD1_t *bdRing, |
---|
901 | struct mbuf **mbufs, |
---|
902 | struct mbuf *m |
---|
903 | ) |
---|
904 | { |
---|
905 | TaskStop(FEC_XMIT_TASK_NO); |
---|
906 | TaskBDReset(FEC_XMIT_TASK_NO); |
---|
907 | mpc5200_fec_discard_tx_frames(bdCount, mbufs); |
---|
908 | while (m != NULL) { |
---|
909 | m = m_free(m); |
---|
910 | } |
---|
911 | } |
---|
912 | |
---|
913 | static struct mbuf *mpc5200_fec_next_fragment( |
---|
914 | struct ifnet *ifp, |
---|
915 | struct mbuf *m, |
---|
916 | bool *isFirst |
---|
917 | ) |
---|
918 | { |
---|
919 | struct mbuf *n = NULL; |
---|
920 | |
---|
921 | *isFirst = false; |
---|
922 | |
---|
923 | while (true) { |
---|
924 | if (m == NULL) { |
---|
925 | IF_DEQUEUE(&ifp->if_snd, m); |
---|
926 | |
---|
927 | if (m != NULL) { |
---|
928 | *isFirst = true; |
---|
929 | } else { |
---|
930 | ifp->if_flags &= ~IFF_OACTIVE; |
---|
931 | |
---|
932 | return NULL; |
---|
933 | } |
---|
934 | } |
---|
935 | |
---|
936 | if (m->m_len > 0) { |
---|
937 | break; |
---|
938 | } else { |
---|
939 | m = m_free(m); |
---|
940 | } |
---|
941 | } |
---|
942 | |
---|
943 | n = m->m_next; |
---|
944 | while (n != NULL && n->m_len <= 0) { |
---|
945 | n = m_free(n); |
---|
946 | } |
---|
947 | m->m_next = n; |
---|
948 | |
---|
949 | return m; |
---|
950 | } |
---|
951 | |
---|
952 | static bool mpc5200_fec_transmit( |
---|
953 | struct ifnet *ifp, |
---|
954 | int bdCount, |
---|
955 | TaskBD1_t *bdRing, |
---|
956 | struct mbuf **mbufs, |
---|
957 | int *bdIndexPtr, |
---|
958 | struct mbuf **mPtr, |
---|
959 | TaskBD1_t **firstPtr |
---|
960 | ) |
---|
961 | { |
---|
962 | bool bdShortage = false; |
---|
963 | int bdIndex = *bdIndexPtr; |
---|
964 | struct mbuf *m = *mPtr; |
---|
965 | TaskBD1_t *first = *firstPtr; |
---|
966 | |
---|
967 | while (true) { |
---|
968 | TaskBD1_t *bd = &bdRing [bdIndex]; |
---|
969 | |
---|
970 | if (bd->Status == 0) { |
---|
971 | struct mbuf *done = mbufs [bdIndex]; |
---|
972 | bool isFirst = false; |
---|
973 | |
---|
974 | if (done != NULL) { |
---|
975 | m_free(done); |
---|
976 | mbufs [bdIndex] = NULL; |
---|
977 | } |
---|
978 | |
---|
979 | m = mpc5200_fec_next_fragment(ifp, m, &isFirst); |
---|
980 | if (m != NULL) { |
---|
981 | uint32 status = (uint32) m->m_len; |
---|
982 | |
---|
983 | mbufs [bdIndex] = m; |
---|
984 | |
---|
985 | rtems_cache_flush_multiple_data_lines(mtod(m, void *), m->m_len); |
---|
986 | |
---|
987 | if (isFirst) { |
---|
988 | first = bd; |
---|
989 | } else { |
---|
990 | status |= FEC_BD_READY; |
---|
991 | } |
---|
992 | |
---|
993 | bd->DataPtr [0] = mtod(m, uint32); |
---|
994 | |
---|
995 | if (m->m_next != NULL) { |
---|
996 | bd->Status = status; |
---|
997 | } else { |
---|
998 | bd->Status = status | FEC_BD_INT | FEC_BD_LAST; |
---|
999 | first->Status |= FEC_BD_READY; |
---|
1000 | SDMA_TASK_ENABLE(SDMA_TCR, FEC_XMIT_TASK_NO); |
---|
1001 | } |
---|
1002 | |
---|
1003 | m = m->m_next; |
---|
1004 | } else { |
---|
1005 | break; |
---|
1006 | } |
---|
1007 | } else { |
---|
1008 | bdShortage = true; |
---|
1009 | break; |
---|
1010 | } |
---|
1011 | |
---|
1012 | if (bdIndex < bdCount - 1) { |
---|
1013 | ++bdIndex; |
---|
1014 | } else { |
---|
1015 | bdIndex = 0; |
---|
1016 | } |
---|
1017 | } |
---|
1018 | |
---|
1019 | *bdIndexPtr = bdIndex; |
---|
1020 | *mPtr = m; |
---|
1021 | *firstPtr = first; |
---|
1022 | |
---|
1023 | return bdShortage; |
---|
1024 | } |
---|
1025 | |
---|
1026 | static void mpc5200_fec_tx_daemon(void *arg) |
---|
1027 | { |
---|
1028 | mpc5200_fec_context *self = arg; |
---|
1029 | struct ifnet *ifp = &self->arpcom.ac_if; |
---|
1030 | int bdIndex = 0; |
---|
1031 | int bdCount = self->txBdCount; |
---|
1032 | struct mbuf **mbufs = &self->txMbuf [0]; |
---|
1033 | struct mbuf *m = NULL; |
---|
1034 | TaskBD1_t *bdRing = mpc5200_fec_init_tx_dma(bdCount, mbufs); |
---|
1035 | TaskBD1_t *first = NULL; |
---|
1036 | bool bdShortage = false; |
---|
1037 | |
---|
1038 | while (true) { |
---|
1039 | if (bdShortage) { |
---|
1040 | bestcomm_glue_irq_enable(FEC_XMIT_TASK_NO); |
---|
1041 | } |
---|
1042 | mpc5200_fec_wait_for_event(); |
---|
1043 | |
---|
1044 | if (self->state != FEC_STATE_NORMAL) { |
---|
1045 | mpc5200_fec_reset_tx_dma(bdCount, bdRing, mbufs, m); |
---|
1046 | mpc5200_fec_restart(self, self->rxDaemonTid); |
---|
1047 | bdIndex = 0; |
---|
1048 | m = NULL; |
---|
1049 | first = NULL; |
---|
1050 | } |
---|
1051 | |
---|
1052 | bdShortage = mpc5200_fec_transmit( |
---|
1053 | ifp, |
---|
1054 | bdCount, |
---|
1055 | bdRing, |
---|
1056 | mbufs, |
---|
1057 | &bdIndex, |
---|
1058 | &m, |
---|
1059 | &first |
---|
1060 | ); |
---|
1061 | } |
---|
1062 | } |
---|
1063 | |
---|
1064 | static struct mbuf *mpc5200_fec_add_mbuf(struct ifnet *ifp, TaskBD1_t *bd) |
---|
1065 | { |
---|
1066 | struct mbuf *m = NULL; |
---|
1067 | |
---|
1068 | MGETHDR (m, M_WAIT, MT_DATA); |
---|
1069 | MCLGET (m, M_WAIT); |
---|
1070 | m->m_pkthdr.rcvif = ifp; |
---|
1071 | |
---|
1072 | /* XXX: The dcbi operation does not work properly */ |
---|
1073 | rtems_cache_flush_multiple_data_lines(mtod(m, void *), ETHER_MAX_LEN); |
---|
1074 | |
---|
1075 | bd->DataPtr [0] = mtod(m, uint32); |
---|
1076 | bd->Status = ETHER_MAX_LEN | FEC_BD_READY; |
---|
1077 | |
---|
1078 | return m; |
---|
1079 | } |
---|
1080 | |
---|
1081 | static TaskBD1_t *mpc5200_fec_init_rx_dma( |
---|
1082 | struct ifnet *ifp, |
---|
1083 | int bdCount, |
---|
1084 | struct mbuf **mbufs |
---|
1085 | ) |
---|
1086 | { |
---|
1087 | TaskSetupParamSet_t param = { |
---|
1088 | .NumBD = bdCount, |
---|
1089 | .Size = { |
---|
1090 | .MaxBuf = ETHER_MAX_LEN |
---|
1091 | }, |
---|
1092 | .Initiator = 0, |
---|
1093 | .StartAddrSrc = (uint32) &mpc5200.rfifo_data, |
---|
1094 | .IncrSrc = 0, |
---|
1095 | .SzSrc = sizeof(uint32_t), |
---|
1096 | .StartAddrDst = 0, |
---|
1097 | .IncrDst = sizeof(uint32_t), |
---|
1098 | .SzDst = sizeof(uint32_t) |
---|
1099 | }; |
---|
1100 | TaskBD1_t *bdRing = NULL; |
---|
1101 | int bdIndex = 0; |
---|
1102 | |
---|
1103 | TaskSetup(FEC_RECV_TASK_NO, ¶m); |
---|
1104 | bdRing = (TaskBD1_t *) TaskGetBDRing(FEC_RECV_TASK_NO); |
---|
1105 | |
---|
1106 | for (bdIndex = 0; bdIndex < bdCount; ++bdIndex) { |
---|
1107 | mbufs [bdIndex] = mpc5200_fec_add_mbuf(ifp, &bdRing [bdIndex]); |
---|
1108 | } |
---|
1109 | |
---|
1110 | return bdRing; |
---|
1111 | } |
---|
1112 | |
---|
1113 | static void mpc5200_fec_reset_rx_dma(int bdCount, TaskBD1_t *bdRing) |
---|
1114 | { |
---|
1115 | int bdIndex = 0; |
---|
1116 | |
---|
1117 | TaskStop(FEC_RECV_TASK_NO); |
---|
1118 | TaskBDReset(FEC_RECV_TASK_NO); |
---|
1119 | |
---|
1120 | for (bdIndex = 0; bdIndex < bdCount; ++bdIndex) { |
---|
1121 | bdRing [bdIndex].Status = ETHER_MAX_LEN | FEC_BD_READY; |
---|
1122 | } |
---|
1123 | } |
---|
1124 | |
---|
1125 | static int mpc5200_fec_ether_input( |
---|
1126 | struct ifnet *ifp, |
---|
1127 | int bdIndex, |
---|
1128 | int bdCount, |
---|
1129 | TaskBD1_t *bdRing, |
---|
1130 | struct mbuf **mbufs |
---|
1131 | ) |
---|
1132 | { |
---|
1133 | while (true) { |
---|
1134 | TaskBD1_t *bd = &bdRing [bdIndex]; |
---|
1135 | struct mbuf *m = mbufs [bdIndex]; |
---|
1136 | uint32 status = 0; |
---|
1137 | int len = 0; |
---|
1138 | struct ether_header *eh = NULL; |
---|
1139 | |
---|
1140 | SDMA_CLEAR_IEVENT(&mpc5200.sdma.IntPend, FEC_RECV_TASK_NO); |
---|
1141 | status = bd->Status; |
---|
1142 | |
---|
1143 | if ((status & FEC_BD_READY) != 0) { |
---|
1144 | break; |
---|
1145 | } |
---|
1146 | |
---|
1147 | eh = mtod(m, struct ether_header *); |
---|
1148 | |
---|
1149 | len = (status & 0xffff) - ETHER_HDR_LEN - ETHER_CRC_LEN; |
---|
1150 | m->m_len = len; |
---|
1151 | m->m_pkthdr.len = len; |
---|
1152 | m->m_data = mtod(m, char *) + ETHER_HDR_LEN; |
---|
1153 | |
---|
1154 | ether_input(ifp, eh, m); |
---|
1155 | |
---|
1156 | mbufs [bdIndex] = mpc5200_fec_add_mbuf(ifp, bd); |
---|
1157 | |
---|
1158 | if (bdIndex < bdCount - 1) { |
---|
1159 | ++bdIndex; |
---|
1160 | } else { |
---|
1161 | bdIndex = 0; |
---|
1162 | } |
---|
1163 | } |
---|
1164 | |
---|
1165 | return bdIndex; |
---|
1166 | } |
---|
1167 | |
---|
1168 | static void mpc5200_fec_rx_daemon(void *arg) |
---|
1169 | { |
---|
1170 | mpc5200_fec_context *self = arg; |
---|
1171 | struct ifnet *ifp = &self->arpcom.ac_if; |
---|
1172 | int bdIndex = 0; |
---|
1173 | int bdCount = self->rxBdCount; |
---|
1174 | struct mbuf **mbufs = &self->rxMbuf [0]; |
---|
1175 | TaskBD1_t *bdRing = mpc5200_fec_init_rx_dma(ifp, bdCount, mbufs); |
---|
1176 | |
---|
1177 | while (true) { |
---|
1178 | bestcomm_glue_irq_enable(FEC_RECV_TASK_NO); |
---|
1179 | mpc5200_fec_wait_for_event(); |
---|
1180 | |
---|
1181 | bdIndex = mpc5200_fec_ether_input(ifp, bdIndex, bdCount, bdRing, mbufs); |
---|
1182 | |
---|
1183 | if (self->state != FEC_STATE_NORMAL) { |
---|
1184 | mpc5200_fec_reset_rx_dma(bdCount, bdRing); |
---|
1185 | mpc5200_fec_restart(self, self->txDaemonTid); |
---|
1186 | bdIndex = 0; |
---|
1187 | } |
---|
1188 | } |
---|
1189 | } |
---|
1190 | |
---|
1191 | /* |
---|
1192 | * Initialize and start the device |
---|
1193 | */ |
---|
1194 | static void mpc5200_fec_init(void *arg) |
---|
1195 | { |
---|
1196 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
1197 | mpc5200_fec_context *self = (mpc5200_fec_context *)arg; |
---|
1198 | struct ifnet *ifp = &self->arpcom.ac_if; |
---|
1199 | |
---|
1200 | if(self->txDaemonTid == 0) |
---|
1201 | { |
---|
1202 | size_t rxMbufTableSize = self->rxBdCount * sizeof(*self->rxMbuf); |
---|
1203 | size_t txMbufTableSize = self->txBdCount * sizeof(*self->txMbuf); |
---|
1204 | |
---|
1205 | /* |
---|
1206 | * Allocate a set of mbuf pointers |
---|
1207 | */ |
---|
1208 | self->rxMbuf = malloc(rxMbufTableSize, M_MBUF, M_NOWAIT); |
---|
1209 | self->txMbuf = malloc(txMbufTableSize, M_MBUF, M_NOWAIT); |
---|
1210 | |
---|
1211 | if(!self->rxMbuf || !self->txMbuf) |
---|
1212 | rtems_panic ("No memory for mbuf pointers"); |
---|
1213 | |
---|
1214 | /* |
---|
1215 | * DMA setup |
---|
1216 | */ |
---|
1217 | bestcomm_glue_init(); |
---|
1218 | mpc5200.sdma.ipr [0] = 4; /* always initiator */ |
---|
1219 | mpc5200.sdma.ipr [3] = 6; /* eth rx initiator */ |
---|
1220 | mpc5200.sdma.ipr [4] = 5; /* eth tx initiator */ |
---|
1221 | |
---|
1222 | /* |
---|
1223 | * Set up interrupts |
---|
1224 | */ |
---|
1225 | bestcomm_glue_irq_install(FEC_RECV_TASK_NO, |
---|
1226 | mpc5200_smartcomm_rx_irq_handler, |
---|
1227 | self); |
---|
1228 | bestcomm_glue_irq_install(FEC_XMIT_TASK_NO, |
---|
1229 | mpc5200_smartcomm_tx_irq_handler, |
---|
1230 | self); |
---|
1231 | sc = rtems_interrupt_handler_install( |
---|
1232 | BSP_SIU_IRQ_ETH, |
---|
1233 | "FEC", |
---|
1234 | RTEMS_INTERRUPT_UNIQUE, |
---|
1235 | mpc5200_fec_irq_handler, |
---|
1236 | self |
---|
1237 | ); |
---|
1238 | if(sc != RTEMS_SUCCESSFUL) { |
---|
1239 | rtems_panic ("Can't attach MPC5x00 FEX interrupt handler\n"); |
---|
1240 | } |
---|
1241 | |
---|
1242 | /* |
---|
1243 | * Start driver tasks |
---|
1244 | */ |
---|
1245 | self->txDaemonTid = rtems_bsdnet_newproc("FEtx", 4096, mpc5200_fec_tx_daemon, self); |
---|
1246 | self->rxDaemonTid = rtems_bsdnet_newproc("FErx", 4096, mpc5200_fec_rx_daemon, self); |
---|
1247 | } |
---|
1248 | |
---|
1249 | mpc5200_fec_request_restart(self); |
---|
1250 | |
---|
1251 | /* |
---|
1252 | * Set flags appropriately |
---|
1253 | */ |
---|
1254 | if(ifp->if_flags & IFF_PROMISC) |
---|
1255 | mpc5200.r_cntrl |= 0x08; |
---|
1256 | else |
---|
1257 | mpc5200.r_cntrl &= ~0x08; |
---|
1258 | |
---|
1259 | /* |
---|
1260 | * Tell the world that we're running. |
---|
1261 | */ |
---|
1262 | ifp->if_flags |= IFF_RUNNING; |
---|
1263 | } |
---|
1264 | |
---|
1265 | static void enet_stats (mpc5200_fec_context *self) |
---|
1266 | { |
---|
1267 | if (self->phyAddr >= 0) { |
---|
1268 | struct ifnet *ifp = &self->arpcom.ac_if; |
---|
1269 | int media = IFM_MAKEWORD(0, 0, 0, self->phyAddr); |
---|
1270 | int rv = (*ifp->if_ioctl)(ifp, SIOCGIFMEDIA, (caddr_t) &media); |
---|
1271 | |
---|
1272 | if (rv == 0) { |
---|
1273 | rtems_ifmedia2str(media, NULL, 0); |
---|
1274 | printf ("\n"); |
---|
1275 | } else { |
---|
1276 | printf ("PHY communication error\n"); |
---|
1277 | } |
---|
1278 | } |
---|
1279 | printf (" Rx Interrupts:%-8lu", self->rxInterrupts); |
---|
1280 | printf (" Rx Not First:%-8lu", self->rxNotFirst); |
---|
1281 | printf (" Rx Not Last:%-8lu\n", self->rxNotLast); |
---|
1282 | printf (" Rx Giant:%-8lu", self->rxGiant); |
---|
1283 | printf (" Rx Non-octet:%-8lu", self->rxNonOctet); |
---|
1284 | printf (" Rx Bad CRC:%-8lu\n", self->rxBadCRC); |
---|
1285 | printf (" Rx FIFO Error:%-8lu", self->rxFIFOError); |
---|
1286 | printf (" Rx Collision:%-8lu", self->rxCollision); |
---|
1287 | |
---|
1288 | printf (" Tx Interrupts:%-8lu\n", self->txInterrupts); |
---|
1289 | printf (" Tx Deferred:%-8lu", self->txDeferred); |
---|
1290 | printf (" Tx Late Collision:%-8lu", self->txLateCollision); |
---|
1291 | printf (" Tx Retransmit Limit:%-8lu\n", self->txRetryLimit); |
---|
1292 | printf (" Tx Underrun:%-8lu", self->txUnderrun); |
---|
1293 | printf (" Tx FIFO Error:%-8lu", self->txFIFOError); |
---|
1294 | printf (" Tx Misaligned:%-8lu\n", self->txMisaligned); |
---|
1295 | } |
---|
1296 | |
---|
1297 | int32_t mpc5200_fec_setMultiFilter(struct ifnet *ifp) |
---|
1298 | { |
---|
1299 | /*mpc5200_fec_context *self = ifp->if_softc; */ |
---|
1300 | /* XXX anything to do? */ |
---|
1301 | return 0; |
---|
1302 | } |
---|
1303 | |
---|
1304 | |
---|
1305 | /* |
---|
1306 | * Driver ioctl handler |
---|
1307 | */ |
---|
1308 | static int mpc5200_fec_ioctl (struct ifnet *ifp, ioctl_command_t command, caddr_t data) |
---|
1309 | { |
---|
1310 | mpc5200_fec_context *self = ifp->if_softc; |
---|
1311 | int error = 0; |
---|
1312 | |
---|
1313 | switch(command) |
---|
1314 | { |
---|
1315 | |
---|
1316 | case SIOCGIFADDR: |
---|
1317 | case SIOCSIFADDR: |
---|
1318 | |
---|
1319 | ether_ioctl(ifp, command, data); |
---|
1320 | |
---|
1321 | break; |
---|
1322 | |
---|
1323 | case SIOCADDMULTI: |
---|
1324 | case SIOCDELMULTI: { |
---|
1325 | struct ifreq* ifr = (struct ifreq*) data; |
---|
1326 | error = (command == SIOCADDMULTI) |
---|
1327 | ? ether_addmulti(ifr, &self->arpcom) |
---|
1328 | : ether_delmulti(ifr, &self->arpcom); |
---|
1329 | |
---|
1330 | if (error == ENETRESET) { |
---|
1331 | if (ifp->if_flags & IFF_RUNNING) |
---|
1332 | error = mpc5200_fec_setMultiFilter(ifp); |
---|
1333 | else |
---|
1334 | error = 0; |
---|
1335 | } |
---|
1336 | break; |
---|
1337 | } |
---|
1338 | |
---|
1339 | case SIOCSIFFLAGS: |
---|
1340 | |
---|
1341 | switch(ifp->if_flags & (IFF_UP | IFF_RUNNING)) |
---|
1342 | { |
---|
1343 | |
---|
1344 | case IFF_RUNNING: |
---|
1345 | |
---|
1346 | mpc5200_fec_off(self); |
---|
1347 | |
---|
1348 | break; |
---|
1349 | |
---|
1350 | case IFF_UP: |
---|
1351 | |
---|
1352 | mpc5200_fec_init(self); |
---|
1353 | |
---|
1354 | break; |
---|
1355 | |
---|
1356 | case IFF_UP | IFF_RUNNING: |
---|
1357 | |
---|
1358 | mpc5200_fec_off(self); |
---|
1359 | mpc5200_fec_init(self); |
---|
1360 | |
---|
1361 | break; |
---|
1362 | |
---|
1363 | default: |
---|
1364 | break; |
---|
1365 | |
---|
1366 | } |
---|
1367 | |
---|
1368 | break; |
---|
1369 | |
---|
1370 | case SIOCGIFMEDIA: |
---|
1371 | case SIOCSIFMEDIA: |
---|
1372 | error = rtems_mii_ioctl(&self->mdio, self, command, (int *) data); |
---|
1373 | break; |
---|
1374 | |
---|
1375 | case SIO_RTEMS_SHOW_STATS: |
---|
1376 | |
---|
1377 | enet_stats(self); |
---|
1378 | |
---|
1379 | break; |
---|
1380 | |
---|
1381 | /* |
---|
1382 | * FIXME: All sorts of multicast commands need to be added here! |
---|
1383 | */ |
---|
1384 | default: |
---|
1385 | |
---|
1386 | error = EINVAL; |
---|
1387 | |
---|
1388 | break; |
---|
1389 | |
---|
1390 | } |
---|
1391 | |
---|
1392 | return error; |
---|
1393 | |
---|
1394 | } |
---|
1395 | |
---|
1396 | |
---|
1397 | /* |
---|
1398 | * Attach the MPC5200 fec driver to the system |
---|
1399 | */ |
---|
1400 | int rtems_mpc5200_fec_driver_attach(struct rtems_bsdnet_ifconfig *config) |
---|
1401 | { |
---|
1402 | mpc5200_fec_context *self; |
---|
1403 | struct ifnet *ifp; |
---|
1404 | int mtu; |
---|
1405 | int unitNumber; |
---|
1406 | char *unitName; |
---|
1407 | |
---|
1408 | /* |
---|
1409 | * Parse driver name |
---|
1410 | */ |
---|
1411 | if((unitNumber = rtems_bsdnet_parse_driver_name(config, &unitName)) < 0) |
---|
1412 | return 0; |
---|
1413 | |
---|
1414 | /* |
---|
1415 | * Is driver free? |
---|
1416 | */ |
---|
1417 | if ((unitNumber <= 0) || (unitNumber > NIFACES)) |
---|
1418 | { |
---|
1419 | |
---|
1420 | printf ("Bad FEC unit number.\n"); |
---|
1421 | return 0; |
---|
1422 | |
---|
1423 | } |
---|
1424 | |
---|
1425 | self = &enet_driver[unitNumber - 1]; |
---|
1426 | ifp = &self->arpcom.ac_if; |
---|
1427 | |
---|
1428 | if(ifp->if_softc != NULL) |
---|
1429 | { |
---|
1430 | |
---|
1431 | printf ("Driver already in use.\n"); |
---|
1432 | return 0; |
---|
1433 | |
---|
1434 | } |
---|
1435 | |
---|
1436 | self->mdio.mdio_r = mpc5200_eth_mii_read; |
---|
1437 | self->mdio.mdio_w = mpc5200_eth_mii_write; |
---|
1438 | |
---|
1439 | /* |
---|
1440 | * Process options |
---|
1441 | */ |
---|
1442 | #if NVRAM_CONFIGURE == 1 |
---|
1443 | |
---|
1444 | /* Configure from NVRAM */ |
---|
1445 | if(addr = nvram->ipaddr) |
---|
1446 | { |
---|
1447 | |
---|
1448 | /* We have a non-zero entry, copy the value */ |
---|
1449 | if(pAddr = malloc(INET_ADDR_MAX_BUF_SIZE, 0, M_NOWAIT)) |
---|
1450 | config->ip_address = (char *)inet_ntop(AF_INET, &addr, pAddr, INET_ADDR_MAX_BUF_SIZE -1); |
---|
1451 | else |
---|
1452 | rtems_panic("Can't allocate ip_address buffer!\n"); |
---|
1453 | |
---|
1454 | } |
---|
1455 | |
---|
1456 | if(addr = nvram->netmask) |
---|
1457 | { |
---|
1458 | |
---|
1459 | /* We have a non-zero entry, copy the value */ |
---|
1460 | if (pAddr = malloc (INET_ADDR_MAX_BUF_SIZE, 0, M_NOWAIT)) |
---|
1461 | config->ip_netmask = (char *)inet_ntop(AF_INET, &addr, pAddr, INET_ADDR_MAX_BUF_SIZE -1); |
---|
1462 | else |
---|
1463 | rtems_panic("Can't allocate ip_netmask buffer!\n"); |
---|
1464 | |
---|
1465 | } |
---|
1466 | |
---|
1467 | /* Ethernet address requires special handling -- it must be copied into |
---|
1468 | * the arpcom struct. The following if construct serves only to give the |
---|
1469 | * User Area NVRAM parameter the highest priority. |
---|
1470 | * |
---|
1471 | * If the ethernet address is specified in NVRAM, go ahead and copy it. |
---|
1472 | * (ETHER_ADDR_LEN = 6 bytes). |
---|
1473 | */ |
---|
1474 | if(nvram->enaddr[0] || nvram->enaddr[1] || nvram->enaddr[2]) |
---|
1475 | { |
---|
1476 | |
---|
1477 | /* Anything in the first three bytes indicates a non-zero entry, copy value */ |
---|
1478 | memcpy((void *)self->arpcom.ac_enaddr, &nvram->enaddr, ETHER_ADDR_LEN); |
---|
1479 | |
---|
1480 | } |
---|
1481 | else |
---|
1482 | if(config->hardware_address) |
---|
1483 | { |
---|
1484 | |
---|
1485 | /* There is no entry in NVRAM, but there is in the ifconfig struct, so use it. */ |
---|
1486 | memcpy((void *)self->arpcom.ac_enaddr, config->hardware_address, ETHER_ADDR_LEN); |
---|
1487 | } |
---|
1488 | else |
---|
1489 | { |
---|
1490 | /* There is no ethernet address provided, so it could be read |
---|
1491 | * from the Ethernet protocol block of SCC1 in DPRAM. |
---|
1492 | */ |
---|
1493 | rtems_panic("No Ethernet address specified!\n"); |
---|
1494 | } |
---|
1495 | |
---|
1496 | #else /* NVRAM_CONFIGURE != 1 */ |
---|
1497 | |
---|
1498 | if(config->hardware_address) |
---|
1499 | { |
---|
1500 | |
---|
1501 | memcpy(self->arpcom.ac_enaddr, config->hardware_address, ETHER_ADDR_LEN); |
---|
1502 | |
---|
1503 | } |
---|
1504 | else |
---|
1505 | { |
---|
1506 | |
---|
1507 | /* There is no ethernet address provided, so it could be read |
---|
1508 | * from the Ethernet protocol block of SCC1 in DPRAM. |
---|
1509 | */ |
---|
1510 | rtems_panic("No Ethernet address specified!\n"); |
---|
1511 | |
---|
1512 | } |
---|
1513 | |
---|
1514 | #endif /* NVRAM_CONFIGURE != 1 */ |
---|
1515 | #ifdef HAS_UBOOT |
---|
1516 | if ((self->arpcom.ac_enaddr[0] == 0) && |
---|
1517 | (self->arpcom.ac_enaddr[1] == 0) && |
---|
1518 | (self->arpcom.ac_enaddr[2] == 0)) { |
---|
1519 | memcpy( |
---|
1520 | (void *)self->arpcom.ac_enaddr, |
---|
1521 | bsp_uboot_board_info.bi_enetaddr, |
---|
1522 | ETHER_ADDR_LEN |
---|
1523 | ); |
---|
1524 | } |
---|
1525 | #endif |
---|
1526 | if(config->mtu) |
---|
1527 | mtu = config->mtu; |
---|
1528 | else |
---|
1529 | mtu = ETHERMTU; |
---|
1530 | |
---|
1531 | if(config->rbuf_count) |
---|
1532 | self->rxBdCount = config->rbuf_count; |
---|
1533 | else |
---|
1534 | self->rxBdCount = RX_BUF_COUNT; |
---|
1535 | |
---|
1536 | if(config->xbuf_count) |
---|
1537 | self->txBdCount = config->xbuf_count; |
---|
1538 | else |
---|
1539 | self->txBdCount = TX_BUF_COUNT; |
---|
1540 | |
---|
1541 | self->acceptBroadcast = !config->ignore_broadcast; |
---|
1542 | |
---|
1543 | /* |
---|
1544 | * Set up network interface values |
---|
1545 | */ |
---|
1546 | ifp->if_softc = self; |
---|
1547 | ifp->if_unit = unitNumber; |
---|
1548 | ifp->if_name = unitName; |
---|
1549 | ifp->if_mtu = mtu; |
---|
1550 | ifp->if_init = mpc5200_fec_init; |
---|
1551 | ifp->if_ioctl = mpc5200_fec_ioctl; |
---|
1552 | ifp->if_start = mpc5200_fec_tx_start; |
---|
1553 | ifp->if_output = ether_output; |
---|
1554 | ifp->if_flags = IFF_BROADCAST | IFF_MULTICAST; |
---|
1555 | /*ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX;*/ |
---|
1556 | |
---|
1557 | if(ifp->if_snd.ifq_maxlen == 0) |
---|
1558 | ifp->if_snd.ifq_maxlen = ifqmaxlen; |
---|
1559 | |
---|
1560 | /* |
---|
1561 | * Attach the interface |
---|
1562 | */ |
---|
1563 | if_attach(ifp); |
---|
1564 | |
---|
1565 | ether_ifattach(ifp); |
---|
1566 | |
---|
1567 | return 1; |
---|
1568 | } |
---|
1569 | |
---|
1570 | |
---|
1571 | int rtems_mpc5200_fec_driver_attach_detach(struct rtems_bsdnet_ifconfig *config, int attaching) |
---|
1572 | { |
---|
1573 | if (attaching) { |
---|
1574 | return rtems_mpc5200_fec_driver_attach(config); |
---|
1575 | } |
---|
1576 | else { |
---|
1577 | return 0; |
---|
1578 | } |
---|
1579 | } |
---|
1580 | |
---|
1581 | |
---|