1 | /* |
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2 | * RTEMS NETWORK DRIVER FOR NATIONAL DP83932 `SONIC' |
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3 | * SYSTEMS-ORIENTED NETWORK INTERFACE CONTROLLER |
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4 | * |
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5 | * REUSABLE CHIP DRIVER CONFIGURATION |
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6 | * |
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7 | * References: |
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8 | * |
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9 | * 1) DP83932C-20/25/33 MHz SONIC(TM) Systems-Oriented Network Interface |
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10 | * Controller data sheet. TL/F/10492, RRD-B30M105, National Semiconductor, |
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11 | * 1995. |
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12 | * |
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13 | * 2) Software Driver Programmer's Guide for the DP83932 SONIC(TM), |
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14 | * Application Note 746, Wesley Lee and Mike Lui, TL/F/11140, |
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15 | * RRD-B30M75, National Semiconductor, March, 1991. |
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16 | * |
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17 | * COPYRIGHT (c) 1989-1997. |
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18 | * On-Line Applications Research Corporation (OAR). |
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19 | * Copyright assigned to U.S. Government, 1994. |
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20 | * |
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21 | * The license and distribution terms for this file may be |
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22 | * found in the file LICENSE in this distribution or at |
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23 | * http://www.OARcorp.com/rtems/license.html. |
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24 | * |
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25 | * $Id$ |
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26 | */ |
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27 | |
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28 | #ifndef _SONIC_DP83932_ |
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29 | #define _SONIC_DP83932_ |
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30 | |
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31 | |
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32 | /* |
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33 | * Debug levels |
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34 | * |
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35 | */ |
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36 | |
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37 | #define SONIC_DEBUG_NONE 0x0000 |
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38 | #define SONIC_DEBUG_ALL 0xFFFF |
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39 | #define SONIC_DEBUG_PRINT_REGISTERS 0x0001 |
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40 | #define SONIC_DEBUG_MEMORY 0x0002 |
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41 | #define SONIC_DEBUG_MEMORY_ALLOCATE 0x0004 |
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42 | #define SONIC_DEBUG_MEMORY_DESCRIPTORS 0x0008 |
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43 | #define SONIC_DEBUG_FRAGMENTS 0x0008 |
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44 | #define SONIC_DEBUG_CAM 0x0010 |
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45 | #define SONIC_DEBUG_DESCRIPTORS 0x0020 |
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46 | #define SONIC_DEBUG_ERRORS 0x0040 |
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47 | #define SONIC_DEBUG_DUMP_TX_MBUFS 0x0080 |
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48 | #define SONIC_DEBUG_DUMP_RX_MBUFS 0x0100 |
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49 | |
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50 | #define SONIC_DEBUG_DUMP_MBUFS \ |
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51 | (SONIC_DEBUG_DUMP_TX_MBUFS|SONIC_DEBUG_DUMP_RX_MBUFS) |
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52 | |
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53 | #define SONIC_DEBUG (SONIC_DEBUG_NONE) |
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54 | /* |
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55 | #define SONIC_DEBUG (SONIC_DEBUG_ERRORS | SONIC_DEBUG_PRINT_REGISTERS |\ |
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56 | SONIC_DEBUG_DESCRIPTORS) |
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57 | */ |
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58 | |
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59 | /* |
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60 | ((SONIC_DEBUG_ALL) & ~(SONIC_DEBUG_PRINT_REGISTERS|SONIC_DEBUG_DUMP_MBUFS)) |
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61 | ((SONIC_DEBUG_ALL) & ~(SONIC_DEBUG_DUMP_MBUFS)) |
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62 | */ |
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63 | |
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64 | #if (SONIC_DEBUG & SONIC_DEBUG_PRINT_REGISTERS) |
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65 | extern char SONIC_Reg_name[64][6]; |
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66 | #endif |
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67 | |
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68 | |
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69 | /* |
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70 | * Configuration Information |
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71 | */ |
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72 | |
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73 | typedef void (*sonic_write_register_t)( |
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74 | void *base, |
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75 | unsigned32 regno, |
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76 | unsigned32 value |
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77 | ); |
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78 | |
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79 | typedef unsigned32 (*sonic_read_register_t)( |
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80 | void *base, |
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81 | unsigned32 regno |
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82 | ); |
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83 | |
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84 | typedef struct { |
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85 | unsigned32 base_address; |
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86 | unsigned32 vector; |
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87 | unsigned32 dcr_value; |
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88 | unsigned32 dc2_value; |
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89 | unsigned32 tda_count; |
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90 | unsigned32 rda_count; |
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91 | sonic_write_register_t write_register; |
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92 | sonic_read_register_t read_register; |
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93 | } sonic_configuration_t; |
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94 | |
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95 | /* |
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96 | ****************************************************************** |
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97 | * * |
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98 | * Device Registers * |
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99 | * * |
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100 | ****************************************************************** |
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101 | */ |
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102 | #define SONIC_REG_CR 0x00 /* Command */ |
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103 | #define SONIC_REG_DCR 0x01 /* Data configuration */ |
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104 | #define SONIC_REG_RCR 0x02 /* Receive control */ |
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105 | #define SONIC_REG_TCR 0x03 /* Transmit control */ |
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106 | #define SONIC_REG_IMR 0x04 /* Interrupt mask */ |
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107 | #define SONIC_REG_ISR 0x05 /* Interrupt status */ |
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108 | #define SONIC_REG_UTDA 0x06 /* Upper transmit descriptor address */ |
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109 | #define SONIC_REG_CTDA 0x07 /* Current transmit descriptor address */ |
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110 | #define SONIC_REG_URDA 0x0D /* Upper receive descriptor address */ |
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111 | #define SONIC_REG_CRDA 0x0E /* Current receive descriptor address */ |
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112 | #define SONIC_REG_EOBC 0x13 /* End of buffer word count */ |
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113 | #define SONIC_REG_URRA 0x14 /* Upper receive resource */ |
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114 | #define SONIC_REG_RSA 0x15 /* Resource start address */ |
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115 | #define SONIC_REG_REA 0x16 /* Resource end address */ |
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116 | #define SONIC_REG_RRP 0x17 /* Resouce read pointer */ |
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117 | #define SONIC_REG_RWP 0x18 /* Resouce write pointer */ |
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118 | #define SONIC_REG_CEP 0x21 /* CAM entry pointer */ |
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119 | #define SONIC_REG_CAP2 0x22 /* CAM address port 2 */ |
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120 | #define SONIC_REG_CAP1 0x23 /* CAM address port 1 */ |
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121 | #define SONIC_REG_CAP0 0x24 /* CAM address port 0 */ |
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122 | #define SONIC_REG_CE 0x25 /* CAM enable */ |
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123 | #define SONIC_REG_CDP 0x26 /* CAM descriptor pointer */ |
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124 | #define SONIC_REG_CDC 0x27 /* CAM descriptor count */ |
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125 | #define SONIC_REG_SR 0x28 /* Silicon revision */ |
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126 | #define SONIC_REG_WT0 0x29 /* Watchdog timer 0 */ |
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127 | #define SONIC_REG_WT1 0x2A /* Watchdog timer 1 */ |
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128 | #define SONIC_REG_RSC 0x2B /* Receive sequence counter */ |
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129 | #define SONIC_REG_CRCT 0x2C /* CRC error tally */ |
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130 | #define SONIC_REG_FAET 0x2D /* FAE tally */ |
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131 | #define SONIC_REG_MPT 0x2E /* Missed packet tally */ |
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132 | #define SONIC_REG_MDT 0x2F /* TX Maximum Deferral */ |
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133 | #define SONIC_REG_DCR2 0x3F /* Data configuration 2 */ |
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134 | |
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135 | /* |
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136 | * Command register |
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137 | */ |
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138 | #define CR_LCAM 0x0200 |
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139 | #define CR_RRRA 0x0100 |
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140 | #define CR_RST 0x0080 |
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141 | #define CR_ST 0x0020 |
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142 | #define CR_STP 0x0010 |
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143 | #define CR_RXEN 0x0008 |
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144 | #define CR_RXDIS 0x0004 |
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145 | #define CR_TXP 0x0002 |
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146 | #define CR_HTX 0x0001 |
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147 | |
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148 | /* |
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149 | * Data configuration register |
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150 | */ |
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151 | #define DCR_EXBUS 0x8000 |
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152 | #define DCR_LBR 0x2000 |
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153 | #define DCR_PO1 0x1000 |
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154 | #define DCR_PO0 0x0800 |
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155 | #define DCR_SBUS 0x0400 |
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156 | #define DCR_USR1 0x0200 |
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157 | #define DCR_USR0 0x0100 |
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158 | #define DCR_WC1 0x0080 |
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159 | #define DCR_WC0 0x0040 |
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160 | #define DCR_DW 0x0020 |
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161 | #define DCR_BMS 0x0010 |
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162 | #define DCR_RFT1 0x0008 |
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163 | #define DCR_RFT0 0x0004 |
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164 | #define DCR_TFT1 0x0002 |
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165 | #define DCR_TFT0 0x0001 |
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166 | |
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167 | /* data configuration register aliases */ |
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168 | #define DCR_SYNC DCR_SBUS /* synchronous (memory cycle 2 clocks) */ |
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169 | #define DCR_ASYNC 0 /* asynchronous (memory cycle 3 clocks) */ |
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170 | |
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171 | #define DCR_WAIT0 0 /* 0 wait states added */ |
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172 | #define DCR_WAIT1 DCR_WC0 /* 1 wait state added */ |
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173 | #define DCR_WAIT2 DCR_WC1 /* 2 wait states added */ |
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174 | #define DCR_WAIT3 (DCR_WC1|DCR_WC0) /* 3 wait states added */ |
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175 | |
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176 | #define DCR_DW16 0 /* use 16-bit DMA accesses */ |
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177 | #define DCR_DW32 DCR_DW /* use 32-bit DMA accesses */ |
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178 | |
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179 | #define DCR_DMAEF 0 /* DMA until TX/RX FIFO has emptied/filled */ |
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180 | #define DCR_DMABLOCK DCR_BMS /* DMA until RX/TX threshold crossed */ |
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181 | |
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182 | #define DCR_RFT4 0 /* receive threshold 4 bytes */ |
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183 | #define DCR_RFT8 DCR_RFT0 /* receive threshold 8 bytes */ |
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184 | #define DCR_RFT16 DCR_RFT1 /* receive threshold 16 bytes */ |
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185 | #define DCR_RFT24 (DCR_RFT1|DCR_RFT0) /* receive threshold 24 bytes */ |
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186 | |
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187 | #define DCR_TFT8 0 /* transmit threshold 8 bytes */ |
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188 | #define DCR_TFT16 DCR_TFT0 /* transmit threshold 16 bytes */ |
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189 | #define DCR_TFT24 DCR_TFT1 /* transmit threshold 24 bytes */ |
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190 | #define DCR_TFT28 (DCR_TFT1|DCR_TFT0) /* transmit threshold 28 bytes */ |
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191 | |
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192 | /* |
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193 | * Receive control register |
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194 | */ |
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195 | #define RCR_ERR 0x8000 |
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196 | #define RCR_RNT 0x4000 |
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197 | #define RCR_BRD 0x2000 |
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198 | #define RCR_PRO 0x1000 |
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199 | #define RCR_AMC 0x0800 |
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200 | #define RCR_LB1 0x0400 |
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201 | #define RCR_LB0 0x0200 |
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202 | #define RCR_MC 0x0100 |
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203 | #define RCR_BC 0x0080 |
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204 | #define RCR_LPKT 0x0040 |
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205 | #define RCR_CRS 0x0020 |
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206 | #define RCR_COL 0x0010 |
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207 | #define RCR_CRCR 0x0008 |
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208 | #define RCR_FAER 0x0004 |
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209 | #define RCR_LBK 0x0002 |
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210 | #define RCR_PRX 0x0001 |
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211 | |
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212 | /* |
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213 | * Transmit control register |
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214 | */ |
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215 | #define TCR_PINT 0x8000 |
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216 | #define TCR_POWC 0x4000 |
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217 | #define TCR_CRCI 0x2000 |
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218 | #define TCR_EXDIS 0x1000 |
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219 | #define TCR_EXD 0x0400 |
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220 | #define TCR_DEF 0x0200 |
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221 | #define TCR_NCRS 0x0100 |
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222 | #define TCR_CRSL 0x0080 |
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223 | #define TCR_EXC 0x0040 |
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224 | #define TCR_OWC 0x0020 |
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225 | #define TCR_PMB 0x0008 |
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226 | #define TCR_FU 0x0004 |
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227 | #define TCR_BCM 0x0002 |
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228 | #define TCR_PTX 0x0001 |
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229 | |
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230 | /* |
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231 | * Interrupt mask register |
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232 | */ |
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233 | #define IMR_BREN 0x4000 |
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234 | #define IMR_HBLEN 0x2000 |
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235 | #define IMR_LCDEN 0x1000 |
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236 | #define IMR_PINTEN 0x0800 |
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237 | #define IMR_PRXEN 0x0400 |
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238 | #define IMR_PTXEN 0x0200 |
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239 | #define IMR_TXEREN 0x0100 |
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240 | #define IMR_TCEN 0x0080 |
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241 | #define IMR_RDEEN 0x0040 |
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242 | #define IMR_RBEEN 0x0020 |
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243 | #define IMR_RBAEEN 0x0010 |
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244 | #define IMR_CRCEN 0x0008 |
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245 | #define IMR_FAEEN 0x0004 |
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246 | #define IMR_MPEN 0x0002 |
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247 | #define IMR_RFOEN 0x0001 |
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248 | |
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249 | /* |
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250 | * Interrupt status register |
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251 | */ |
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252 | #define ISR_BR 0x4000 |
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253 | #define ISR_HBL 0x2000 |
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254 | #define ISR_LCD 0x1000 |
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255 | #define ISR_PINT 0x0800 |
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256 | #define ISR_PKTRX 0x0400 |
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257 | #define ISR_TXDN 0x0200 |
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258 | #define ISR_TXER 0x0100 |
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259 | #define ISR_TC 0x0080 |
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260 | #define ISR_RDE 0x0040 |
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261 | #define ISR_RBE 0x0020 |
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262 | #define ISR_RBAE 0x0010 |
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263 | #define ISR_CRC 0x0008 |
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264 | #define ISR_FAE 0x0004 |
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265 | #define ISR_MP 0x0002 |
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266 | #define ISR_RFO 0x0001 |
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267 | |
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268 | /* |
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269 | * Data configuration register 2 |
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270 | */ |
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271 | #define DCR2_EXPO3 0x8000 |
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272 | #define DCR2_EXPO2 0x4000 |
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273 | #define DCR2_EXPO1 0x2000 |
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274 | #define DCR2_EXPO0 0x1000 |
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275 | #define DCR2_HBDIS 0x0800 |
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276 | #define DCR2_PH 0x0010 |
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277 | #define DCR2_PCM 0x0004 |
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278 | #define DCR2_PCNM 0x0002 |
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279 | #define DCR2_RJCM 0x0001 |
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280 | |
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281 | /* |
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282 | * Known values for the Silicon Revision Register. |
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283 | * Note that DP83934 has revision 5 and seems to work. |
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284 | */ |
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285 | |
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286 | #define SONIC_REVISION_B 4 |
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287 | #define SONIC_REVISION_DP83934 5 |
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288 | #define SONIC_REVISION_C 6 |
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289 | |
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290 | /* |
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291 | ****************************************************************** |
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292 | * * |
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293 | * Transmit Buffer Management * |
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294 | * * |
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295 | ****************************************************************** |
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296 | */ |
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297 | |
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298 | /* |
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299 | * Transmit descriptor area entry. |
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300 | * There is one transmit descriptor for each packet to be transmitted. |
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301 | * Statically reserve space for up to MAXIMUM_FRAGS_PER_PACKET fragments |
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302 | * per descriptor. |
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303 | */ |
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304 | #define MAXIMUM_FRAGS_PER_DESCRIPTOR 6 |
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305 | struct TransmitDescriptor { |
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306 | rtems_unsigned32 status; |
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307 | rtems_unsigned32 pkt_config; |
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308 | rtems_unsigned32 pkt_size; |
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309 | rtems_unsigned32 frag_count; |
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310 | |
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311 | /* |
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312 | * Packet fragment pointers |
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313 | */ |
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314 | struct TransmitDescriptorFragLink { |
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315 | rtems_unsigned32 frag_lsw; /* LSW of fragment address */ |
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316 | #define frag_link frag_lsw |
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317 | rtems_unsigned32 frag_msw; /* MSW of fragment address */ |
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318 | rtems_unsigned32 frag_size; |
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319 | } frag[MAXIMUM_FRAGS_PER_DESCRIPTOR]; |
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320 | |
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321 | /* |
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322 | * Space for link if all fragment pointers are used. |
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323 | */ |
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324 | rtems_unsigned32 link_pad; |
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325 | |
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326 | /* |
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327 | * Extra RTEMS stuff |
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328 | */ |
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329 | struct TransmitDescriptor *next; /* Circularly-linked list */ |
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330 | struct mbuf *mbufp; /* First mbuf in packet */ |
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331 | volatile rtems_unsigned32 *linkp; /* Pointer to un[xxx].link */ |
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332 | }; |
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333 | typedef struct TransmitDescriptor TransmitDescriptor_t; |
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334 | typedef volatile TransmitDescriptor_t *TransmitDescriptorPointer_t; |
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335 | |
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336 | /* |
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337 | * Transmit Configuration. |
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338 | * For standard Ethernet transmission, all bits in the transmit |
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339 | * configuration field are set to 0. |
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340 | */ |
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341 | #define TDA_CONFIG_PINT 0x8000 |
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342 | #define TDA_CONFIG_POWC 0x4000 |
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343 | #define TDA_CONFIG_CRCI 0x2000 |
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344 | #define TDA_CONFIG_EXDIS 0x1000 |
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345 | |
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346 | /* |
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347 | * Transmit status |
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348 | */ |
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349 | #define TDA_STATUS_COLLISION_MASK 0xF800 |
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350 | #define TDA_STATUS_COLLISION_SHIFT 11 |
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351 | #define TDA_STATUS_EXD 0x0400 |
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352 | #define TDA_STATUS_DEF 0x0200 |
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353 | #define TDA_STATUS_NCRS 0x0100 |
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354 | #define TDA_STATUS_CRSL 0x0080 |
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355 | #define TDA_STATUS_EXC 0x0040 |
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356 | #define TDA_STATUS_OWC 0x0020 |
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357 | #define TDA_STATUS_PMB 0x0008 |
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358 | #define TDA_STATUS_FU 0x0004 |
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359 | #define TDA_STATUS_BCM 0x0002 |
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360 | #define TDA_STATUS_PTX 0x0001 |
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361 | |
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362 | #define TDA_LINK_EOL 0x0001 |
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363 | #define TDA_LINK_EOL_MASK 0xFFFE |
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364 | |
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365 | |
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366 | |
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367 | /* |
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368 | ****************************************************************** |
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369 | * * |
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370 | * Receive Buffer Management * |
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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 | /* |
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376 | * Receive resource area entry. |
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377 | * There is one receive resource entry for each receive buffer area (RBA). |
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378 | * This driver allows only one packet per receive buffer area, so one |
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379 | * receive resource entry corresponds to one correctly-received packet. |
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380 | */ |
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381 | struct ReceiveResource { |
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382 | rtems_unsigned32 buff_ptr_lsw; /* LSW of RBA address */ |
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383 | rtems_unsigned32 buff_ptr_msw; /* MSW of RBA address */ |
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384 | rtems_unsigned32 buff_wc_lsw; /* LSW of RBA size (16-bit words) */ |
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385 | rtems_unsigned32 buff_wc_msw; /* MSW of RBA size (16-bit words) */ |
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386 | }; |
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387 | typedef struct ReceiveResource ReceiveResource_t; |
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388 | typedef volatile ReceiveResource_t *ReceiveResourcePointer_t; |
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389 | |
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390 | /* |
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391 | * Receive descriptor area entry. |
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392 | * There is one receive descriptor for each packet received. |
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393 | */ |
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394 | struct ReceiveDescriptor { |
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395 | rtems_unsigned32 status; |
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396 | rtems_unsigned32 byte_count; |
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397 | rtems_unsigned32 pkt_lsw; /* LSW of packet address */ |
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398 | rtems_unsigned32 pkt_msw; /* MSW of packet address */ |
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399 | rtems_unsigned32 seq_no; |
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400 | rtems_unsigned32 link; |
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401 | rtems_unsigned32 in_use; |
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402 | |
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403 | /* |
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404 | * Extra RTEMS stuff |
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405 | */ |
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406 | volatile struct ReceiveDescriptor *next; /* Circularly-linked list */ |
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407 | struct mbuf *mbufp; /* First mbuf in packet */ |
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408 | }; |
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409 | typedef struct ReceiveDescriptor ReceiveDescriptor_t; |
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410 | typedef volatile ReceiveDescriptor_t *ReceiveDescriptorPointer_t; |
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411 | |
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412 | typedef struct { |
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413 | rtems_unsigned32 cep; /* CAM Entry Pointer */ |
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414 | rtems_unsigned32 cap0; /* CAM Address Port 0 xx-xx-xx-xx-YY-YY */ |
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415 | rtems_unsigned32 cap1; /* CAM Address Port 1 xx-xx-YY-YY-xxxx */ |
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416 | rtems_unsigned32 cap2; /* CAM Address Port 2 YY-YY-xx-xx-xx-xx */ |
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417 | rtems_unsigned32 ce; |
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418 | } CamDescriptor_t; |
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419 | |
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420 | typedef volatile CamDescriptor_t *CamDescriptorPointer_t; |
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421 | |
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422 | /* |
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423 | * Receive status |
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424 | */ |
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425 | #define RDA_STATUS_ERR 0x8800 |
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426 | #define RDA_STATUS_RNT 0x4000 |
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427 | #define RDA_STATUS_BRD 0x2000 |
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428 | #define RDA_STATUS_PRO 0x1000 |
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429 | #define RDA_STATUS_AMC 0x0800 |
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430 | #define RDA_STATUS_LB1 0x0400 |
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431 | #define RDA_STATUS_LB0 0x0200 |
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432 | #define RDA_STATUS_MC 0x0100 |
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433 | #define RDA_STATUS_BC 0x0080 |
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434 | #define RDA_STATUS_LPKT 0x0040 |
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435 | #define RDA_STATUS_CRS 0x0020 |
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436 | #define RDA_STATUS_COL 0x0010 |
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437 | #define RDA_STATUS_CRCR 0x0008 |
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438 | #define RDA_STATUS_FAER 0x0004 |
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439 | #define RDA_STATUS_LBK 0x0002 |
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440 | #define RDA_STATUS_PRX 0x0001 |
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441 | |
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442 | #define RDA_LINK_EOL 0x0001 |
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443 | #define RDA_LINK_EOL_MASK 0xFFFE |
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444 | #define RDA_IN_USE 0x0000 /* SONIC has finished with the packet */ |
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445 | /* and the driver can process it */ |
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446 | #define RDA_FREE 0xFFFF /* SONIC can use it */ |
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447 | |
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448 | /* |
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449 | * Attatch routine |
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450 | */ |
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451 | |
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452 | int rtems_sonic_driver_attach ( |
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453 | struct rtems_bsdnet_ifconfig *config, |
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454 | sonic_configuration_t *chip |
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455 | ); |
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456 | |
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457 | #ifdef CPU_U32_FIX |
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458 | void ipalign(struct mbuf *m); |
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459 | #endif |
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460 | |
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461 | #endif /* _SONIC_DP83932_ */ |
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