1 | /* network.c: An 82596 ethernet driver for rtems-bsd. |
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2 | */ |
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3 | |
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4 | #include <machine/rtems-bsd-kernel-space.h> |
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5 | |
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6 | /* |
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7 | * Selectively define to debug the network driver. If you define any of these |
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8 | * you must run with polled console I/O. |
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9 | */ |
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10 | |
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11 | /* |
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12 | #define DBG_ADD_CMD |
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13 | #define DBG_WAIT |
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14 | #define DBG_SEND |
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15 | #define DBG_MEM |
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16 | #define DBG_SELFTEST_CMD |
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17 | #define DBG_DUMP_CMD |
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18 | #define DBG_RESET |
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19 | #define DBG_ATTACH |
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20 | #define DBG_START |
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21 | #define DBG_INIT |
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22 | #define DBG_STOP |
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23 | #define DBG_RX |
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24 | #define DBG_ISR |
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25 | #define DBG_IOCTL |
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26 | #define DBG_STAT |
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27 | #define DBG_PACKETS |
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28 | */ |
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29 | |
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30 | #define IGNORE_SPURIOUS_IRQ |
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31 | #define IGNORE_NO_RFA |
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32 | #define IGNORE_MULTIPLE_RF |
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33 | |
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34 | /* |
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35 | * Default number of buffer descriptors and buffer sizes. |
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36 | */ |
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37 | #define RX_BUF_COUNT 15 |
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38 | #define TX_BUF_COUNT 4 |
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39 | #define TX_BD_PER_BUF 4 |
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40 | |
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41 | #define RBUF_SIZE 1520 |
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42 | |
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43 | #define UTI_596_ETH_MIN_SIZE 60 |
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44 | |
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45 | #define INET_ADDR_MAX_BUF_SIZE (sizeof "255.255.255.255") |
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46 | |
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47 | /* |
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48 | * RTEMS events |
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49 | */ |
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50 | #define INTERRUPT_EVENT RTEMS_EVENT_1 |
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51 | #define START_TRANSMIT_EVENT RTEMS_EVENT_2 |
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52 | #define NIC_RESET_EVENT RTEMS_EVENT_3 |
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53 | |
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54 | #include <bsp.h> |
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55 | #include <inttypes.h> |
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56 | #include <stdio.h> |
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57 | #include <string.h> |
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58 | #include <stdlib.h> |
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59 | |
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60 | #include <rtems/error.h> |
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61 | #include <rtems/bspIo.h> |
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62 | #include <rtems/rtems_bsdnet.h> |
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63 | #include <sys/param.h> |
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64 | #include <sys/mbuf.h> |
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65 | #include <sys/socket.h> |
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66 | #include <sys/sockio.h> |
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67 | #include <sys/types.h> |
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68 | #include <net/if.h> |
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69 | #include <netinet/in.h> |
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70 | #include <netinet/if_ether.h> |
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71 | |
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72 | #include "uti596.h" |
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73 | |
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74 | /* If we are running interrupt driven I/O no debug output is printed */ |
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75 | #if CD2401_IO_MODE == 0 |
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76 | #define printk(arglist) do { printk arglist; printk("\r"); } while (0); |
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77 | #else |
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78 | #define printk(arglist) |
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79 | #endif |
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80 | |
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81 | #define UTI_596_ASSERT( condition, str ) if (!( condition ) ) { printk((str)) } |
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82 | |
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83 | /* Types of PORT commands */ |
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84 | #define UTI596_RESET_PORT_FUNCTION 0 |
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85 | #define UTI596_SELFTEST_PORT_FUNCTION 1 |
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86 | #define UTI596_SCP_PORT_FUNCTION 2 |
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87 | #define UTI596_DUMP_PORT_FUNCTION 3 |
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88 | |
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89 | /* Types of waiting for commands */ |
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90 | #define UTI596_NO_WAIT 0 |
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91 | #define UTI596_WAIT_FOR_CU_ACCEPT 1 |
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92 | #define UTI596_WAIT_FOR_INITIALIZATION 2 |
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93 | #define UTI596_WAIT_FOR_STAT_C 3 |
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94 | |
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95 | /* Device dependent data structure */ |
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96 | static uti596_softc_ uti596_softc; |
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97 | |
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98 | /* Globals */ |
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99 | int count_rx = 0; |
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100 | static int scbStatus; |
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101 | static rtems_status_code sc; |
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102 | static i596_cmd *pIsrCmd; |
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103 | static i596_rfd *pIsrRfd; |
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104 | |
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105 | /* |
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106 | * Initial 596 configuration |
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107 | */ |
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108 | char uti596initSetup[] = { |
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109 | 0x0E, /* Byte 0: length, prefetch off ( no RBD's ) */ |
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110 | 0xC8, /* Byte 1: fifo to 8, monitor off */ |
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111 | 0x40, /* Byte 2: don't save bad frames ( was save= 80, use intel's 40 )*/ |
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112 | 0x2E, /* Byte 3: No source address insertion, 8 byte preamble */ |
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113 | 0x00, /* Byte 4: priority and backoff defaults */ |
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114 | 0x60, /* Byte 5: interframe spacing */ |
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115 | 0x00, /* Byte 6: slot time LSB */ |
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116 | 0xf2, /* Byte 7: slot time and retries */ |
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117 | 0x0C, /* Byte 8: not promisc, enable bcast, tx no crs, crc inserted 32bit, 802.3 framing */ |
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118 | 0x08, /* Byte 9: collision detect */ |
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119 | 0x40, /* Byte 10: minimum frame length */ |
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120 | 0xfb, /* Byte 11: tried C8 same as byte 1 in bits 6-7, else ignored*/ |
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121 | 0x00, /* Byte 12: disable full duplex */ |
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122 | 0x3f /* Byte 13: no multi IA, backoff enabled */ |
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123 | }; |
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124 | |
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125 | /* Local Routines */ |
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126 | |
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127 | static unsigned long word_swap ( unsigned long ); |
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128 | static void * malloc_16byte_aligned ( void **, void ** adjusted_pointer, size_t ); |
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129 | RTEMS_INLINE_ROUTINE void uti596_writePortFunction ( volatile void *, unsigned long ); |
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130 | /* currently unused by RTEMS */ |
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131 | #if 0 |
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132 | RTEMS_INLINE_ROUTINE void uti596_portReset( void ); |
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133 | static unsigned long uti596_portSelfTest( i596_selftest * ); |
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134 | static int uti596_portDump ( i596_dump_result * ); |
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135 | static void uti596_CU_dump ( i596_dump_result * ); |
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136 | #endif |
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137 | static int uti596_wait ( uti596_softc_ *, uint8_t); |
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138 | static int uti596_issueCA ( uti596_softc_ *, uint8_t); |
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139 | static void uti596_addCmd ( i596_cmd * ); |
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140 | static void uti596_addPolledCmd ( i596_cmd * ); |
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141 | static int uti596_setScpAndScb ( uti596_softc_ * ); |
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142 | static int uti596_diagnose ( void ); |
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143 | static int uti596_configure ( uti596_softc_ * ); |
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144 | static int uti596_IAsetup ( uti596_softc_ * ); |
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145 | static int uti596_initTBD ( uti596_softc_ * ); |
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146 | static int uti596_initRFA ( int ); |
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147 | static void uti596_initMem ( uti596_softc_ * ); |
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148 | static void uti596_initialize ( uti596_softc_ * ); |
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149 | static void uti596_initialize_hardware ( uti596_softc_ * ); |
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150 | static void uti596_reset_hardware ( uti596_softc_ *); |
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151 | static void uti596_reset ( void ); |
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152 | static void uti596_clearListStatus ( i596_rfd * ); |
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153 | static i596_rfd * uti596_dequeue ( i596_rfd ** ); |
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154 | static void uti596_append ( i596_rfd ** , i596_rfd * ); |
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155 | static void uti596_supplyFD ( i596_rfd * ); |
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156 | static void send_packet ( struct ifnet *, struct mbuf * ); |
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157 | |
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158 | /* Required RTEMS network driver functions and tasks (plus reset daemon) */ |
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159 | |
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160 | static void uti596_start ( struct ifnet * ); |
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161 | void uti596_init ( void * ); |
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162 | void uti596_stop ( uti596_softc_ * ); |
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163 | void uti596_txDaemon ( void * ); |
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164 | void uti596_rxDaemon ( void * ); |
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165 | void uti596_resetDaemon( void * ); |
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166 | rtems_isr uti596_DynamicInterruptHandler ( rtems_vector_number ); |
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167 | static int uti596_ioctl ( struct ifnet *, u_long, caddr_t ); |
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168 | void uti596_stats ( uti596_softc_ * ); |
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169 | |
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170 | #ifdef DBG_PACKETS |
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171 | static void dumpQ( void ); |
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172 | static void show_buffers( void ); |
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173 | static void show_queues( void ); |
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174 | static void print_eth ( unsigned char * ); |
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175 | static void print_hdr ( unsigned char * ); |
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176 | static void print_pkt ( unsigned char * ); |
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177 | static void print_echo ( unsigned char * ); |
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178 | #endif |
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179 | |
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180 | /* |
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181 | * word_swap |
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182 | * |
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183 | * Return a 32 bit value, swapping the upper and lower words first. |
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184 | * |
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185 | * Input parameters: |
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186 | * val - 32 bit value to swap |
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187 | * |
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188 | * Output parameters: NONE |
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189 | * |
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190 | * Return value: |
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191 | * Input value with upper and lower 16-bit words swapped |
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192 | */ |
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193 | static unsigned long word_swap( |
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194 | unsigned long val |
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195 | ) |
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196 | { |
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197 | return (((val >> 16)&(0x0000ffff)) | ((val << 16)&(0xffff0000))); |
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198 | } |
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199 | |
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200 | /* |
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201 | * malloc_16byte_aligned |
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202 | * |
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203 | * Allocate a block of a least nbytes aligned on a 16-byte boundary. |
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204 | * Clients are responsible to store both the real address and the adjusted |
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205 | * address. The real address must be used to free the block. |
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206 | * |
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207 | * Input parameters: |
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208 | * real_pointer - pointer to a void * pointer in which to store the starting |
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209 | * address of the block. Required for free. |
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210 | * adjusted_pointer - pointer to a void * pointer in which to store the |
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211 | * starting address of the block rounded up to the next |
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212 | * 16 byte boundary. |
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213 | * nbytes - number of bytes of storage requested |
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214 | * |
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215 | * Output parameters: |
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216 | * real_pointer - starting address of the block. |
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217 | * adjusted_pointer - starting address of the block rounded up to the next |
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218 | * 16 byte boundary. |
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219 | * |
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220 | * Return value: |
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221 | * starting address of the block rounded up to the next 16 byte boundary. |
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222 | * NULL if no storage was allocated. |
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223 | */ |
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224 | static void * malloc_16byte_aligned( |
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225 | void ** real_pointer, |
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226 | void ** adjusted_pointer, |
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227 | size_t nbytes |
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228 | ) |
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229 | { |
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230 | *real_pointer = malloc( nbytes + 0xF, 0, M_NOWAIT ); |
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231 | *adjusted_pointer = (void *)(((unsigned long)*real_pointer + 0xF ) & 0xFFFFFFF0 ); |
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232 | return *adjusted_pointer; |
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233 | } |
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234 | |
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235 | /* |
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236 | * uti596_scp_alloc |
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237 | * |
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238 | * Allocate a new scp, possibly freeing a previously allocated one. |
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239 | * |
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240 | * Input parameters: |
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241 | * sc - pointer to the global uti596_softc in which to store pointers |
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242 | * to the newly allocated block. |
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243 | * |
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244 | * Output parameters: NONE |
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245 | * |
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246 | * Return value: |
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247 | * Pointer to the newly allocated, 16-byte aligned scp. |
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248 | */ |
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249 | static i596_scp * uti596_scp_alloc( |
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250 | uti596_softc_ * sc |
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251 | ) |
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252 | { |
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253 | if( sc->base_scp != NULL ) { |
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254 | #ifdef DBG_MEM |
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255 | printk(("uti596_scp_alloc: Already have an SCP at %p\n", sc->base_scp)) |
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256 | #endif |
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257 | return sc->pScp; |
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258 | } |
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259 | |
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260 | /* allocate enough memory for the Scp block to be aligned on 16 byte boundary */ |
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261 | malloc_16byte_aligned( (void *)&(sc->base_scp), (void *)&(sc->pScp), sizeof( i596_scp ) ); |
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262 | |
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263 | #ifdef DBG_MEM |
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264 | printk(("uti596_scp_alloc: Scp base address is %p\n", sc->base_scp)) |
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265 | printk(("uti596_scp_alloc: Scp aligned address is : %p\n",sc->pScp)) |
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266 | #endif |
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267 | |
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268 | return sc->pScp; |
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269 | } |
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270 | |
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271 | /* |
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272 | * uti596_writePortFunction |
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273 | * |
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274 | * Write the command into the PORT. |
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275 | * |
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276 | * Input parameters: |
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277 | * addr - 16-byte aligned address to write into the PORT. |
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278 | * cmd - 4-bit cmd to write into the PORT |
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279 | * |
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280 | * Output parameters: NONE |
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281 | * |
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282 | * Return value: NONE |
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283 | * |
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284 | * The Motorola manual swapped the high and low registers. |
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285 | */ |
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286 | RTEMS_INLINE_ROUTINE void uti596_writePortFunction( |
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287 | volatile void * addr, |
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288 | unsigned long cmd |
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289 | ) |
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290 | { |
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291 | i82596->port_lower = (unsigned short)(((unsigned long)addr & 0xFFF0) | cmd); |
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292 | i82596->port_upper = (unsigned short)(((unsigned long)addr >> 16 ) & 0xFFFF); |
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293 | } |
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294 | |
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295 | /* |
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296 | * uti596_portReset |
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297 | * |
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298 | * Issue a port Reset to the uti596 |
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299 | * |
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300 | * Input parameters: NONE |
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301 | * |
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302 | * Output parameters: NONE |
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303 | * |
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304 | * Return value: NONE |
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305 | */ |
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306 | RTEMS_INLINE_ROUTINE void uti596_portReset( void ) |
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307 | { |
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308 | uti596_writePortFunction( NULL, UTI596_RESET_PORT_FUNCTION ); |
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309 | } |
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310 | |
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311 | /* currently unused by RTEMS */ |
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312 | #if 0 |
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313 | /* |
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314 | * uti596_portSelfTest |
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315 | * |
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316 | * Perform a self-test. Wait for up to 1 second for the test to |
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317 | * complete. Normally, the test should complete in a very short time, |
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318 | * so busy waiting is not an issue. |
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319 | * |
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320 | * Input parameters: |
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321 | * stp - pointer to a 16-byte aligned uti596_selftest structure. |
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322 | * |
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323 | * Output parameters: NONE |
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324 | * |
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325 | * Return value: |
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326 | * 32-bit result field if successful, -1 otherwise. |
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327 | */ |
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328 | static unsigned long uti596_portSelfTest( |
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329 | i596_selftest * stp |
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330 | ) |
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331 | { |
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332 | rtems_interval ticks_per_second, start_ticks, end_ticks; |
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333 | |
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334 | stp->results = 0xFFFFFFFF; |
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335 | uti596_writePortFunction( stp, UTI596_SELFTEST_PORT_FUNCTION ); |
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336 | |
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337 | ticks_per_second = rtems_clock_get_ticks_per_second(); |
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338 | |
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339 | start_ticks = rtems_clock_get_ticks_since_boot(); |
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340 | end_ticks = start_ticks + ticks_per_second; |
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341 | |
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342 | do { |
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343 | if( stp->results != 0xFFFFFFFF ) |
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344 | break; |
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345 | else |
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346 | start_ticks = rtems_clock_get_ticks_since_boot(); |
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347 | } while (start_ticks <= end_ticks); |
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348 | |
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349 | if (start_ticks > end_ticks ) { |
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350 | #ifdef DBG_SELFTEST_CMD |
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351 | printk(("uti596_selftest: Timed out\n" )) |
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352 | #endif |
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353 | return -1; |
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354 | } |
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355 | else { |
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356 | #ifdef DBG_SELFTEST_CMD |
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357 | printk(("uti596_selftest: Succeeded with signature = 0x%08x, result = 0x%08x\n", |
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358 | stp->signature, |
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359 | stp->results)) |
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360 | #endif |
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361 | return stp->results; |
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362 | } |
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363 | } |
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364 | #endif |
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365 | |
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366 | /* currently unused by RTEMS */ |
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367 | #if 0 |
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368 | /* |
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369 | * uti596_portDump |
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370 | * |
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371 | * Perform a dump Wait for up to 1 second for the test to |
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372 | * complete. Normally, the test should complete in a very short time, |
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373 | * so busy waiting is not an issue. |
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374 | * |
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375 | * Input parameters: |
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376 | * dp - pointer to a 16-byte aligned uti596_dump structure. |
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377 | * |
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378 | * Output parameters: NONE |
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379 | * |
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380 | * Return value: |
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381 | * 16-bit dump_status field if successful, -1 otherwise. |
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382 | */ |
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383 | static int uti596_portDump( |
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384 | i596_dump_result * dp |
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385 | ) |
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386 | { |
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387 | rtems_interval ticks_per_second, start_ticks, end_ticks; |
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388 | |
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389 | dp->dump_status = 0; |
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390 | uti596_writePortFunction( dp, UTI596_DUMP_PORT_FUNCTION ); |
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391 | |
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392 | ticks_per_second = rtems_clock_get_ticks_per_second(); |
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393 | start_ticks = rtems_clock_get_ticks_since_boot(); |
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394 | end_ticks = start_ticks + ticks_per_second; |
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395 | |
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396 | do { |
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397 | if( dp->dump_status != 0xA006 ) |
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398 | break; |
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399 | else |
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400 | start_ticks = rtems_clock_get_ticks_since_boot(); |
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401 | } while (start_ticks <= end_ticks); |
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402 | |
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403 | if (start_ticks > end_ticks ) { |
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404 | #ifdef DBG_DUMP_CMD |
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405 | printk(("uti596_dump: Timed out with dump at 0x%08x\n", (unsigned long)dp )) |
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406 | #endif |
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407 | return -1; |
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408 | } |
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409 | else { |
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410 | #ifdef DBG_DUMP_CMD |
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411 | printk(("uti596_dump: Succeeded with dump at = 0x%08x\n", (unsigned long)dp )) |
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412 | #endif |
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413 | return dp->dump_status; |
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414 | } |
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415 | } |
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416 | #endif |
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417 | |
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418 | /* |
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419 | * uti596_wait |
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420 | * |
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421 | * Wait for a certain condition. |
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422 | * |
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423 | * Input parameters: |
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424 | * sc - pointer to the uti596_softc struct |
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425 | * wait_type - UTI596_NO_WAIT |
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426 | * UTI596_WAIT |
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427 | * UTI596_WAIT_FOR_CU_ACCEPT |
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428 | * UTI596_WAIT_FOR_INITIALIZATION |
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429 | * UTI596_WAIT_FOR_STAT_C |
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430 | * |
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431 | * Output parameters: NONE |
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432 | * |
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433 | * Return value: |
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434 | * 0 if successful, -1 otherwise. |
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435 | */ |
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436 | static int uti596_wait( |
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437 | uti596_softc_ *sc, |
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438 | uint8_t waitType |
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439 | ) |
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440 | { |
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441 | rtems_interval ticks_per_second, start_ticks, end_ticks; |
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442 | |
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443 | ticks_per_second = rtems_clock_get_ticks_per_second(); |
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444 | start_ticks = rtems_clock_get_ticks_since_boot(); |
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445 | end_ticks = start_ticks + ticks_per_second; |
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446 | |
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447 | switch( waitType ) { |
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448 | |
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449 | case UTI596_NO_WAIT: |
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450 | return 0; |
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451 | |
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452 | case UTI596_WAIT_FOR_CU_ACCEPT: |
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453 | do { |
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454 | if (sc->scb.command == 0) |
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455 | break; |
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456 | else |
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457 | |
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458 | start_ticks = rtems_clock_get_ticks_since_boot(); |
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459 | |
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460 | } while (start_ticks <= end_ticks); |
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461 | |
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462 | if( (sc->scb.command != 0) || (start_ticks > end_ticks) ) { |
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463 | printf("i82596 timed out with status %x, cmd %x.\n", |
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464 | sc->scb.status, sc->scb.command); |
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465 | return -1; |
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466 | } |
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467 | else |
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468 | return 0; |
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469 | |
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470 | case UTI596_WAIT_FOR_INITIALIZATION: |
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471 | do { |
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472 | if( !sc->iscp.busy ) |
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473 | break; |
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474 | else |
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475 | start_ticks = rtems_clock_get_ticks_since_boot(); |
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476 | } while (start_ticks <= end_ticks); |
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477 | |
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478 | if (start_ticks > end_ticks ) { |
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479 | #ifdef DBG_WAIT |
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480 | printk(("uti596_setScpAndScb: Timed out\n" )) |
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481 | #endif |
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482 | return -1; |
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483 | } |
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484 | else { |
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485 | #ifdef DBG_WAIT |
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486 | printk(("uti596_setScpAndScb: Succeeded\n" )) |
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487 | #endif |
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488 | return 0; |
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489 | } |
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490 | |
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491 | case UTI596_WAIT_FOR_STAT_C: |
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492 | do { |
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493 | if( *sc->pCurrent_command_status & STAT_C ) |
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494 | break; |
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495 | else |
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496 | start_ticks = rtems_clock_get_ticks_since_boot(); |
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497 | } while (start_ticks <= end_ticks); |
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498 | |
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499 | if (start_ticks > end_ticks ) { |
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500 | #ifdef DBG_WAIT |
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501 | printk(("uti596_initMem: timed out - STAT_C not obtained\n" )) |
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502 | #endif |
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503 | return -1; |
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504 | } |
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505 | else { |
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506 | #ifdef DBG_WAIT |
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507 | printk(("uti596_initMem: STAT_C obtained OK\n" )) |
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508 | #endif |
---|
509 | return 0; |
---|
510 | } |
---|
511 | } |
---|
512 | return -1; |
---|
513 | } |
---|
514 | |
---|
515 | /* |
---|
516 | * uti596_issueCA |
---|
517 | * |
---|
518 | * Issue a Channel Attention command. Possibly wait for the |
---|
519 | * command to start or complete. |
---|
520 | * |
---|
521 | * Input parameters: |
---|
522 | * sc - pointer to the uti596_softc |
---|
523 | * wait_type - UTI596_NO_WAIT |
---|
524 | * UTI596_WAIT_BEGIN |
---|
525 | * UTI596_WAIT_COMPLETION |
---|
526 | * |
---|
527 | * Output parameters: NONE |
---|
528 | * |
---|
529 | * Return value: |
---|
530 | * 0 if successful, -1 otherwise. |
---|
531 | */ |
---|
532 | static int uti596_issueCA( |
---|
533 | uti596_softc_ *sc, |
---|
534 | uint8_t waitType |
---|
535 | ) |
---|
536 | { |
---|
537 | /* Issue Channel Attention */ |
---|
538 | i82596->chan_attn = 0x00000000; |
---|
539 | |
---|
540 | return (uti596_wait ( sc, waitType )); |
---|
541 | } |
---|
542 | |
---|
543 | /* |
---|
544 | * uti596_addCmd |
---|
545 | * |
---|
546 | * Add a uti596_cmd onto the end of the CBL command chain, |
---|
547 | * or to the start if the chain is empty. |
---|
548 | * |
---|
549 | * Input parameters: |
---|
550 | * pCmd - a pointer to the command to be added. |
---|
551 | * |
---|
552 | * Output parameters: NONE |
---|
553 | * |
---|
554 | * Return value: NONE |
---|
555 | */ |
---|
556 | static void uti596_addCmd( |
---|
557 | i596_cmd *pCmd |
---|
558 | ) |
---|
559 | { |
---|
560 | ISR_Level level; |
---|
561 | |
---|
562 | #ifdef DBG_ADD_CMD |
---|
563 | printk(("uti596_addCmd: Adding command 0x%x\n", pCmd -> command )) |
---|
564 | #endif |
---|
565 | |
---|
566 | /* Mark command as last in list, to return an interrupt */ |
---|
567 | pCmd->command |= (CMD_EOL | CMD_INTR ); |
---|
568 | pCmd->status = 0; |
---|
569 | pCmd->next = I596_NULL; |
---|
570 | |
---|
571 | _ISR_Local_disable(level); |
---|
572 | |
---|
573 | if (uti596_softc.pCmdHead == I596_NULL) { |
---|
574 | uti596_softc.pCmdHead = uti596_softc.pCmdTail = uti596_softc.scb.pCmd = pCmd; |
---|
575 | uti596_softc.scb.cmd_pointer = word_swap ((unsigned long)pCmd); |
---|
576 | |
---|
577 | uti596_wait ( &uti596_softc, UTI596_WAIT_FOR_CU_ACCEPT ); |
---|
578 | uti596_softc.scb.command = CUC_START; |
---|
579 | uti596_issueCA ( &uti596_softc, UTI596_NO_WAIT ); |
---|
580 | |
---|
581 | _ISR_Local_enable(level); |
---|
582 | } |
---|
583 | else { |
---|
584 | uti596_softc.pCmdTail->next = (i596_cmd *) word_swap ((unsigned long)pCmd); |
---|
585 | uti596_softc.pCmdTail = pCmd; |
---|
586 | _ISR_Local_enable(level); |
---|
587 | } |
---|
588 | |
---|
589 | #ifdef DBG_ADD_CMD |
---|
590 | printk(("uti596_addCmd: Scb status & command 0x%x 0x%x\n", |
---|
591 | uti596_softc.scb.status, |
---|
592 | uti596_softc.scb.command )) |
---|
593 | #endif |
---|
594 | } |
---|
595 | |
---|
596 | /* |
---|
597 | * uti596_addPolledCmd |
---|
598 | * |
---|
599 | * Add a single uti596_cmd to the end of the command block list |
---|
600 | * for processing, send a CU_START and wait for its acceptance |
---|
601 | * |
---|
602 | * Input parameters: |
---|
603 | * sc - a pointer to the uti596_softc struct |
---|
604 | * |
---|
605 | * Output parameters: NONE |
---|
606 | * |
---|
607 | * Return value: NONE |
---|
608 | */ |
---|
609 | void uti596_addPolledCmd( |
---|
610 | i596_cmd *pCmd |
---|
611 | ) |
---|
612 | { |
---|
613 | |
---|
614 | #ifdef DBG_ADD_CMD |
---|
615 | printk(("uti596_addPolledCmd: Adding command 0x%x\n", pCmd -> command )) |
---|
616 | #endif |
---|
617 | |
---|
618 | pCmd->status = 0; |
---|
619 | pCmd->command |= CMD_EOL ; /* only command in list*/ |
---|
620 | pCmd->next = I596_NULL; |
---|
621 | |
---|
622 | uti596_wait ( &uti596_softc, UTI596_WAIT_FOR_CU_ACCEPT ); |
---|
623 | |
---|
624 | uti596_softc.pCmdHead = uti596_softc.pCmdTail = uti596_softc.scb.pCmd = pCmd; |
---|
625 | uti596_softc.scb.cmd_pointer = word_swap((unsigned long)pCmd); |
---|
626 | uti596_softc.scb.command = CUC_START; |
---|
627 | uti596_issueCA ( &uti596_softc, UTI596_WAIT_FOR_CU_ACCEPT ); |
---|
628 | |
---|
629 | uti596_softc.pCmdHead = uti596_softc.pCmdTail = uti596_softc.scb.pCmd = I596_NULL; |
---|
630 | uti596_softc.scb.cmd_pointer = (unsigned long) I596_NULL; |
---|
631 | |
---|
632 | #ifdef DBG_ADD_CMD |
---|
633 | printk(("uti596_addPolledCmd: Scb status & command 0x%x 0x%x\n", |
---|
634 | uti596_softc.scb.status, |
---|
635 | uti596_softc.scb.command )) |
---|
636 | #endif |
---|
637 | } |
---|
638 | |
---|
639 | /* currently unused by RTEMS */ |
---|
640 | #if 0 |
---|
641 | /* |
---|
642 | * uti596_CU_dump |
---|
643 | * |
---|
644 | * Dump the LANC 82596 registers |
---|
645 | * The outcome is the same as the portDump() but executed |
---|
646 | * via the CU instead of via a PORT access. |
---|
647 | * |
---|
648 | * Input parameters: |
---|
649 | * drp - a pointer to a i596_dump_result structure. |
---|
650 | * |
---|
651 | * Output parameters: NONE |
---|
652 | * |
---|
653 | * Return value: NONE |
---|
654 | */ |
---|
655 | static void uti596_CU_dump ( i596_dump_result * drp) |
---|
656 | { |
---|
657 | i596_dump dumpCmd; |
---|
658 | |
---|
659 | dumpCmd.cmd.command = CmdDump; |
---|
660 | dumpCmd.cmd.next = I596_NULL; |
---|
661 | dumpCmd.pData = (char *) drp; |
---|
662 | uti596_softc.cmdOk = 0; |
---|
663 | uti596_addCmd ( (i596_cmd *) &dumpCmd ); |
---|
664 | |
---|
665 | } |
---|
666 | #endif |
---|
667 | |
---|
668 | #if defined(DBG_STAT) || !defined(IGNORE_NO_RFA) |
---|
669 | /* |
---|
670 | * uti596_dump_scb |
---|
671 | * |
---|
672 | * Dump the system control block |
---|
673 | * This function expands to nothing when using interrupt driven I/O |
---|
674 | * |
---|
675 | * Input parameters: NONE |
---|
676 | * |
---|
677 | * Output parameters: NONE |
---|
678 | * |
---|
679 | * Return value: NONE |
---|
680 | */ |
---|
681 | static void uti596_dump_scb ( void ) |
---|
682 | { |
---|
683 | printk(("status 0x%x\n",uti596_softc.scb.status)) |
---|
684 | printk(("command 0x%x\n",uti596_softc.scb.command)) |
---|
685 | printk(("cmd 0x%x\n",(int)uti596_softc.scb.pCmd)) |
---|
686 | printk(("rfd 0x%x\n",(int)uti596_softc.scb.pRfd)) |
---|
687 | printk(("crc_err 0x%" PRIx32 "\n",uti596_softc.scb.crc_err)) |
---|
688 | printk(("align_err 0x%" PRIx32 "\n",uti596_softc.scb.align_err)) |
---|
689 | printk(("resource_err 0x%" PRIx32 "\n",uti596_softc.scb.resource_err )) |
---|
690 | printk(("over_err 0x%" PRIx32 "\n",uti596_softc.scb.over_err)) |
---|
691 | printk(("rcvdt_err 0x%" PRIx32 "\n",uti596_softc.scb.rcvdt_err)) |
---|
692 | printk(("short_err 0x%" PRIx32 "\n",uti596_softc.scb.short_err)) |
---|
693 | printk(("t_on 0x%x\n",uti596_softc.scb.t_on)) |
---|
694 | printk(("t_off 0x%x\n",uti596_softc.scb.t_off)) |
---|
695 | } |
---|
696 | #endif |
---|
697 | |
---|
698 | /* |
---|
699 | * uti596_setScpAndScb |
---|
700 | * |
---|
701 | * Issue the first channel attention after reset and wait for the busy |
---|
702 | * field to clear in the iscp. |
---|
703 | * |
---|
704 | * Input parameters: |
---|
705 | * sc - pointer to the global uti596_softc |
---|
706 | * |
---|
707 | * Output parameters: NONE |
---|
708 | * |
---|
709 | * Return value: |
---|
710 | * 0 if successful, -1 otherwise. |
---|
711 | */ |
---|
712 | static int uti596_setScpAndScb( |
---|
713 | uti596_softc_ * sc |
---|
714 | ) |
---|
715 | { |
---|
716 | /* set the busy flag in the iscp */ |
---|
717 | sc->iscp.busy = 1; |
---|
718 | |
---|
719 | /* the command block list (CBL) is empty */ |
---|
720 | sc->scb.command = 0; |
---|
721 | sc->scb.cmd_pointer = (unsigned long) I596_NULL; /* all 1's */ |
---|
722 | sc->pCmdHead = sc->scb.pCmd = I596_NULL; /* all 1's */ |
---|
723 | |
---|
724 | uti596_writePortFunction( sc->pScp, UTI596_SCP_PORT_FUNCTION ); |
---|
725 | |
---|
726 | /* Issue CA: pass the scb address to the 596 */ |
---|
727 | return ( uti596_issueCA ( sc, UTI596_WAIT_FOR_INITIALIZATION ) ); |
---|
728 | } |
---|
729 | |
---|
730 | /* |
---|
731 | * uti596_diagnose |
---|
732 | * |
---|
733 | * Send a diagnose command to the CU |
---|
734 | * |
---|
735 | * Input parameters: NONE |
---|
736 | * |
---|
737 | * Output parameters: NONE |
---|
738 | * |
---|
739 | * Return value: |
---|
740 | * 0 if successful, -1 otherwise |
---|
741 | */ |
---|
742 | static int uti596_diagnose( void ) |
---|
743 | { |
---|
744 | i596_cmd diagnose; |
---|
745 | |
---|
746 | diagnose.command = CmdDiagnose; |
---|
747 | diagnose.status = 0; |
---|
748 | uti596_softc.pCurrent_command_status = (unsigned short *)&diagnose.status; |
---|
749 | uti596_addPolledCmd(&diagnose); |
---|
750 | return (uti596_wait ( &uti596_softc, UTI596_WAIT_FOR_STAT_C )); |
---|
751 | |
---|
752 | #ifdef DBG_INIT |
---|
753 | printk(("Status diagnostic: 0xa000 is a success ... 0x%2.2x\n", diagnose.status)) |
---|
754 | #endif |
---|
755 | } |
---|
756 | |
---|
757 | /* |
---|
758 | * uti596_configure |
---|
759 | * |
---|
760 | * Send the CU a configure command with the desired |
---|
761 | * configuration structure |
---|
762 | * |
---|
763 | * Input parameters: |
---|
764 | * sc - a pointer to the uti596_softc struct |
---|
765 | * |
---|
766 | * Output parameters: NONE |
---|
767 | * |
---|
768 | * Return value: |
---|
769 | * 0 if successful, -1 otherwise |
---|
770 | */ |
---|
771 | static int uti596_configure ( |
---|
772 | uti596_softc_ * sc |
---|
773 | ) |
---|
774 | { |
---|
775 | sc->set_conf.cmd.command = CmdConfigure; |
---|
776 | memcpy ( (void *)sc->set_conf.data, uti596initSetup, 14); |
---|
777 | uti596_addPolledCmd( (i596_cmd *) &sc->set_conf); |
---|
778 | |
---|
779 | /* Poll for successful command completion */ |
---|
780 | sc->pCurrent_command_status = (unsigned short *)&(sc->set_conf.cmd.status); |
---|
781 | return ( uti596_wait ( sc, UTI596_WAIT_FOR_STAT_C ) ); |
---|
782 | } |
---|
783 | |
---|
784 | /* |
---|
785 | * uti596_IAsetup |
---|
786 | * |
---|
787 | * Send the CU an Individual Address setup command with |
---|
788 | * the ethernet hardware address |
---|
789 | * |
---|
790 | * Input parameters: |
---|
791 | * sc - a pointer to the uti596_softc struct |
---|
792 | * |
---|
793 | * Output parameters: NONE |
---|
794 | * |
---|
795 | * Return value: |
---|
796 | * 0 if successful, -1 otherwise |
---|
797 | */ |
---|
798 | static int uti596_IAsetup ( |
---|
799 | uti596_softc_ * sc |
---|
800 | ) |
---|
801 | { |
---|
802 | int i; |
---|
803 | |
---|
804 | sc->set_add.cmd.command = CmdSASetup; |
---|
805 | for ( i=0; i<6; i++) { |
---|
806 | sc->set_add.data[i]=sc->arpcom.ac_enaddr[i]; |
---|
807 | } |
---|
808 | sc->cmdOk = 0; |
---|
809 | uti596_addPolledCmd((i596_cmd *)&sc->set_add); |
---|
810 | |
---|
811 | /* Poll for successful command completion */ |
---|
812 | sc->pCurrent_command_status = (unsigned short *)&(sc->set_add.cmd.status); |
---|
813 | return ( uti596_wait ( sc, UTI596_WAIT_FOR_STAT_C ) ); |
---|
814 | } |
---|
815 | |
---|
816 | /* |
---|
817 | * uti596_initTBD |
---|
818 | * |
---|
819 | * Initialize transmit buffer descriptors |
---|
820 | * dynamically allocate mem for the number of tbd's required |
---|
821 | * |
---|
822 | * Input parameters: |
---|
823 | * sc - a pointer to the uti596_softc struct |
---|
824 | * |
---|
825 | * Output parameters: NONE |
---|
826 | * |
---|
827 | * Return value: |
---|
828 | * 0 if successful, -1 otherwise |
---|
829 | */ |
---|
830 | static int uti596_initTBD ( uti596_softc_ * sc ) |
---|
831 | { |
---|
832 | int i; |
---|
833 | i596_tbd *pTbd, *pPrev; |
---|
834 | |
---|
835 | /* Set up a transmit command with a tbd ready */ |
---|
836 | sc->pLastUnkRFD = I596_NULL; |
---|
837 | sc->pTxCmd = (i596_tx *) calloc (1,sizeof (struct i596_tx) ); |
---|
838 | sc->pTbd = (i596_tbd *) calloc (1,sizeof (struct i596_tbd) ); |
---|
839 | if ((sc->pTxCmd == NULL) || (sc->pTbd == NULL)) { |
---|
840 | return -1; |
---|
841 | } |
---|
842 | sc->pTxCmd->pTbd = (i596_tbd *) word_swap ((unsigned long) sc->pTbd); |
---|
843 | sc->pTxCmd->cmd.command = CMD_FLEX|CmdTx; |
---|
844 | sc->pTxCmd->pad = 0; |
---|
845 | sc->pTxCmd->count = 0; /* all bytes are in list of TBD's */ |
---|
846 | |
---|
847 | pPrev = pTbd = sc->pTbd; |
---|
848 | |
---|
849 | /* Allocate a linked list of tbd's each with it's 'next' field written |
---|
850 | * with upper and lower words swapped (for big endian), and mark the end. |
---|
851 | */ |
---|
852 | for ( i=0; i<sc->txBdCount; i++) { |
---|
853 | if ( (pTbd = (i596_tbd *) calloc (1,sizeof (struct i596_tbd) )) == NULL ) { |
---|
854 | return -1; |
---|
855 | } |
---|
856 | pPrev->next = (i596_tbd *) word_swap ((unsigned long) pTbd); |
---|
857 | pPrev = pTbd; |
---|
858 | } |
---|
859 | pTbd->next = I596_NULL; |
---|
860 | return 0; |
---|
861 | } |
---|
862 | |
---|
863 | /* |
---|
864 | * uti596_initRFA |
---|
865 | * |
---|
866 | * Initialize the Receive Frame Area |
---|
867 | * dynamically allocate mem for the number of rfd's required |
---|
868 | * |
---|
869 | * Input parameters: |
---|
870 | * sc - a pointer to the uti596_softc struct |
---|
871 | * |
---|
872 | * Output parameters: NONE |
---|
873 | * |
---|
874 | * Return value: |
---|
875 | * # of buffer descriptors successfully allocated |
---|
876 | */ |
---|
877 | static int uti596_initRFA( int num ) |
---|
878 | { |
---|
879 | i596_rfd *pRfd; |
---|
880 | int i = 0; |
---|
881 | |
---|
882 | #ifdef DBG_INIT |
---|
883 | printk(("uti596_initRFA: begins\n Requested frame descriptors ... %d.\n", num)) |
---|
884 | #endif |
---|
885 | |
---|
886 | /* |
---|
887 | * Create the first RFD in the RFA |
---|
888 | */ |
---|
889 | pRfd = (i596_rfd *) calloc (1, sizeof (struct i596_rfd)); |
---|
890 | if ( !pRfd ) { |
---|
891 | printk(("Can't allocate first buffer.\n")) |
---|
892 | return 0; |
---|
893 | } |
---|
894 | else { |
---|
895 | uti596_softc.countRFD = 1; |
---|
896 | uti596_softc.pBeginRFA = uti596_softc.pEndRFA = pRfd; |
---|
897 | } |
---|
898 | |
---|
899 | /* Create remaining RFDs */ |
---|
900 | for (i = 1; i < num; i++) { |
---|
901 | pRfd = (i596_rfd *) calloc (1, sizeof (struct i596_rfd) ); |
---|
902 | if ( pRfd != NULL ) { |
---|
903 | uti596_softc.countRFD++; /* update count */ |
---|
904 | uti596_softc.pEndRFA->next = |
---|
905 | (i596_rfd *) word_swap ((unsigned long) pRfd); /* write the link */ |
---|
906 | uti596_softc.pEndRFA = pRfd; /* move the end */ |
---|
907 | } |
---|
908 | else { |
---|
909 | printk(("Can't allocate all buffers: only %d allocated\n", i)) |
---|
910 | break; |
---|
911 | } |
---|
912 | } /* end for */ |
---|
913 | |
---|
914 | uti596_softc.pEndRFA->next = I596_NULL; |
---|
915 | UTI_596_ASSERT(uti596_softc.countRFD == num,"INIT:WRONG RFD COUNT\n" ) |
---|
916 | |
---|
917 | #ifdef DBG_INIT |
---|
918 | printk (("uti596_initRFA: Head of RFA is buffer %p \n\ |
---|
919 | uti596_initRFA: End of RFA is buffer %p \n", |
---|
920 | uti596_softc.pBeginRFA, uti596_softc.pEndRFA )) |
---|
921 | #endif |
---|
922 | |
---|
923 | /* Walk and initialize the RFD's */ |
---|
924 | for ( pRfd = uti596_softc.pBeginRFA; |
---|
925 | pRfd != I596_NULL; |
---|
926 | pRfd = (i596_rfd *) word_swap ((unsigned long)pRfd->next) ) |
---|
927 | { |
---|
928 | pRfd->cmd = 0x0000; |
---|
929 | pRfd->stat = 0x0000; |
---|
930 | pRfd->pRbd = I596_NULL; |
---|
931 | pRfd->count = 0; /* number of bytes in buffer: usually less than size */ |
---|
932 | pRfd->size = 1532; /* was 1532; buffer size ( All RBD ) */ |
---|
933 | } /* end for */ |
---|
934 | |
---|
935 | /* mark the last RFD as the last one in the RDL */ |
---|
936 | uti596_softc.pEndRFA -> cmd = CMD_EOL; |
---|
937 | uti596_softc.pSavedRfdQueue = |
---|
938 | uti596_softc.pEndSavedQueue = I596_NULL; /* initially empty */ |
---|
939 | |
---|
940 | uti596_softc.savedCount = 0; |
---|
941 | uti596_softc.nop.cmd.command = CmdNOp; /* initialize the nop command */ |
---|
942 | |
---|
943 | return (i); /* the number of allocated buffers */ |
---|
944 | } |
---|
945 | |
---|
946 | /* |
---|
947 | * uti596_initMem |
---|
948 | * |
---|
949 | * Initialize the 82596 memory structures for Tx and Rx |
---|
950 | * dynamically allocate mem for the number of tbd's required |
---|
951 | * |
---|
952 | * Input parameters: |
---|
953 | * sc - a pointer to the uti596_softc struct |
---|
954 | * |
---|
955 | * Output parameters: NONE |
---|
956 | * |
---|
957 | * Return value: NONE |
---|
958 | */ |
---|
959 | void uti596_initMem( |
---|
960 | uti596_softc_ * sc |
---|
961 | ) |
---|
962 | { |
---|
963 | int i; |
---|
964 | |
---|
965 | #ifdef DBG_INIT |
---|
966 | printk(("uti596_initMem: begins\n")) |
---|
967 | #endif |
---|
968 | |
---|
969 | sc->resetDone = 0; |
---|
970 | |
---|
971 | /* |
---|
972 | * Set up receive frame area (RFA) |
---|
973 | */ |
---|
974 | i = uti596_initRFA( sc->rxBdCount ); |
---|
975 | if ( i < sc->rxBdCount ) { |
---|
976 | printk(("init_rfd: only able to allocate %d receive frame descriptors\n", i)) |
---|
977 | } |
---|
978 | |
---|
979 | /* |
---|
980 | * Write the SCB with a pointer to the receive frame area |
---|
981 | * and keep a pointer for our use. |
---|
982 | */ |
---|
983 | sc->scb.rfd_pointer = word_swap((unsigned long)sc->pBeginRFA); |
---|
984 | sc->scb.pRfd = sc->pBeginRFA; |
---|
985 | |
---|
986 | /* |
---|
987 | * Diagnose the health of the board |
---|
988 | */ |
---|
989 | uti596_diagnose(); |
---|
990 | |
---|
991 | /* |
---|
992 | * Configure the 82596 |
---|
993 | */ |
---|
994 | uti596_configure( sc ); |
---|
995 | |
---|
996 | /* |
---|
997 | * Set up the Individual (hardware) Address |
---|
998 | */ |
---|
999 | uti596_IAsetup ( sc ); |
---|
1000 | |
---|
1001 | /* |
---|
1002 | * Initialize the transmit buffer descriptors |
---|
1003 | */ |
---|
1004 | uti596_initTBD( sc ); |
---|
1005 | |
---|
1006 | /* Padding used to fill short tx frames */ |
---|
1007 | memset ( RTEMS_DEVOLATILE( char *, sc->zeroes ), 0, 64); |
---|
1008 | |
---|
1009 | /* now need ISR */ |
---|
1010 | sc->resetDone = 1; |
---|
1011 | } |
---|
1012 | |
---|
1013 | /* |
---|
1014 | * uti596_initialize |
---|
1015 | * |
---|
1016 | * Reset the 82596 and initialize it with a new SCP. |
---|
1017 | * |
---|
1018 | * Input parameters: |
---|
1019 | * sc - pointer to the uti596_softc |
---|
1020 | * |
---|
1021 | * Output parameters: NONE |
---|
1022 | * |
---|
1023 | * Return value: NONE |
---|
1024 | */ |
---|
1025 | void uti596_initialize( |
---|
1026 | uti596_softc_ *sc |
---|
1027 | ) |
---|
1028 | { |
---|
1029 | /* Reset the device. Stops it from doing whatever it might be doing. */ |
---|
1030 | uti596_portReset(); |
---|
1031 | |
---|
1032 | /* Get a new System Configuration Pointer */ |
---|
1033 | uti596_scp_alloc( sc ); |
---|
1034 | |
---|
1035 | /* write the SYSBUS: interrupt pin active high, LOCK disabled, |
---|
1036 | * internal triggering, linear mode |
---|
1037 | */ |
---|
1038 | sc->pScp->sysbus = 0x44; |
---|
1039 | |
---|
1040 | /* provide the iscp to the scp, keep a pointer for our use */ |
---|
1041 | sc->pScp->iscp_pointer = word_swap((unsigned long)&sc->iscp); |
---|
1042 | sc->pScp->iscp = &sc->iscp; |
---|
1043 | |
---|
1044 | /* provide the scb to the iscp, keep a pointer for our use */ |
---|
1045 | sc->iscp.scb_pointer = word_swap((unsigned long)&sc->scb); |
---|
1046 | sc->iscp.scb = &sc->scb; |
---|
1047 | |
---|
1048 | #ifdef DBG_INIT |
---|
1049 | printk(("uti596_initialize: Starting i82596.\n")) |
---|
1050 | #endif |
---|
1051 | |
---|
1052 | /* Set up the 82596 */ |
---|
1053 | uti596_setScpAndScb( sc ); |
---|
1054 | |
---|
1055 | /* clear the scb command word */ |
---|
1056 | sc->scb.command = 0; |
---|
1057 | } |
---|
1058 | |
---|
1059 | /* |
---|
1060 | * uti596_initialize_hardware |
---|
1061 | * |
---|
1062 | * Reset the 82596 and initialize it with a new SCP. Enable bus snooping. |
---|
1063 | * Install the interrupt handlers. |
---|
1064 | * |
---|
1065 | * Input parameters: |
---|
1066 | * sc - pointer to the uti596_softc |
---|
1067 | * |
---|
1068 | * Output parameters: NONE |
---|
1069 | * |
---|
1070 | * Return value: NONE |
---|
1071 | */ |
---|
1072 | void uti596_initialize_hardware( |
---|
1073 | uti596_softc_ *sc |
---|
1074 | ) |
---|
1075 | { |
---|
1076 | printk(("uti596_initialize_hardware: begins\n")) |
---|
1077 | |
---|
1078 | /* Get the PCCChip2 to assert bus snooping signals on behalf of the i82596 */ |
---|
1079 | pccchip2->LANC_berr_ctl = 0x40; |
---|
1080 | |
---|
1081 | uti596_initialize( sc ); |
---|
1082 | |
---|
1083 | /* |
---|
1084 | * Configure interrupt control in PCCchip2 |
---|
1085 | */ |
---|
1086 | pccchip2->LANC_error = 0xff; /* clear status register */ |
---|
1087 | pccchip2->LANC_int_ctl = 0x5d; /* lvl 5, enabled, edge-sensitive rising */ |
---|
1088 | pccchip2->LANC_berr_ctl = 0x5d; /* bus error: lvl 5, enabled, snoop control |
---|
1089 | * will supply dirty data and leave dirty data |
---|
1090 | * on read access and sink any data on write |
---|
1091 | */ |
---|
1092 | /* |
---|
1093 | * Install the interrupt handler |
---|
1094 | * calls rtems_interrupt_catch |
---|
1095 | */ |
---|
1096 | set_vector( uti596_DynamicInterruptHandler, 0x57, 1 ); |
---|
1097 | |
---|
1098 | /* Initialize the 82596 memory */ |
---|
1099 | uti596_initMem(sc); |
---|
1100 | |
---|
1101 | #ifdef DBG_INIT |
---|
1102 | printk(("uti596_initialize_hardware: After attach, status of board = 0x%x\n", sc->scb.status )) |
---|
1103 | #endif |
---|
1104 | } |
---|
1105 | |
---|
1106 | /* |
---|
1107 | * uti596_reset_hardware |
---|
1108 | * |
---|
1109 | * Reset the 82596 and initialize it with an SCP. |
---|
1110 | * |
---|
1111 | * Input parameters: |
---|
1112 | * sc - pointer to the uti596_softc |
---|
1113 | * |
---|
1114 | * Output parameters: NONE |
---|
1115 | * |
---|
1116 | * Return value: NONE |
---|
1117 | */ |
---|
1118 | void uti596_reset_hardware( |
---|
1119 | uti596_softc_ *sc |
---|
1120 | ) |
---|
1121 | { |
---|
1122 | rtems_status_code status_code; |
---|
1123 | i596_cmd *pCmd; |
---|
1124 | |
---|
1125 | pCmd = sc->pCmdHead; /* This is a tx command for sure (99.99999%) */ |
---|
1126 | |
---|
1127 | /* the command block list (CBL) is empty */ |
---|
1128 | sc->scb.cmd_pointer = (unsigned long) I596_NULL; /* all 1's */ |
---|
1129 | sc->pCmdHead = sc->scb.pCmd = I596_NULL; /* all 1's */ |
---|
1130 | |
---|
1131 | #ifdef DBG_RESET |
---|
1132 | printk(("uti596_reset_hardware\n")) |
---|
1133 | #endif |
---|
1134 | uti596_initialize( sc ); |
---|
1135 | |
---|
1136 | /* |
---|
1137 | * Wake the transmitter if needed. |
---|
1138 | */ |
---|
1139 | if ( sc->txDaemonTid && pCmd != I596_NULL ) { |
---|
1140 | printk(("****RESET: wakes transmitter!\n")) |
---|
1141 | status_code = rtems_bsdnet_event_send (sc->txDaemonTid, |
---|
1142 | INTERRUPT_EVENT); |
---|
1143 | |
---|
1144 | if ( status_code != RTEMS_SUCCESSFUL ) { |
---|
1145 | printk(("****ERROR:Could NOT send event to tid 0x%" PRIx32 " : %s\n", |
---|
1146 | sc->txDaemonTid, rtems_status_text (status_code) )) |
---|
1147 | } |
---|
1148 | } |
---|
1149 | |
---|
1150 | #ifdef DBG_RESET |
---|
1151 | printk(("uti596_reset_hardware: After reset_hardware, status of board = 0x%x\n", sc->scb.status )) |
---|
1152 | #endif |
---|
1153 | } |
---|
1154 | |
---|
1155 | /* |
---|
1156 | * uti596_clearListStatus |
---|
1157 | * |
---|
1158 | * Clear the stat fields for all RFDs |
---|
1159 | * |
---|
1160 | * Input parameters: |
---|
1161 | * pRfd - a pointer to the head of the RFA |
---|
1162 | * |
---|
1163 | * Output parameters: NONE |
---|
1164 | * |
---|
1165 | * Return value: NONE |
---|
1166 | */ |
---|
1167 | void uti596_clearListStatus( |
---|
1168 | i596_rfd *pRfd |
---|
1169 | ) |
---|
1170 | { |
---|
1171 | while ( pRfd != I596_NULL ) { |
---|
1172 | pRfd -> stat = 0; |
---|
1173 | pRfd = (i596_rfd *) word_swap((unsigned long)pRfd-> next); |
---|
1174 | } |
---|
1175 | } |
---|
1176 | |
---|
1177 | /* |
---|
1178 | * uti596_reset |
---|
1179 | * |
---|
1180 | * Reset the 82596 and reconfigure |
---|
1181 | * |
---|
1182 | * Input parameters: NONE |
---|
1183 | * |
---|
1184 | * Output parameters: NONE |
---|
1185 | * |
---|
1186 | * Return value: NONE |
---|
1187 | */ |
---|
1188 | void uti596_reset( void ) |
---|
1189 | { |
---|
1190 | uti596_softc_ *sc = &uti596_softc; |
---|
1191 | |
---|
1192 | #ifdef DBG_RESET |
---|
1193 | printk(("uti596_reset: begin\n")) |
---|
1194 | #endif |
---|
1195 | |
---|
1196 | /* Wait for the CU to be available, then |
---|
1197 | * reset the ethernet hardware. Must re-config. |
---|
1198 | */ |
---|
1199 | sc->resetDone = 0; |
---|
1200 | uti596_wait ( sc, UTI596_WAIT_FOR_CU_ACCEPT ); |
---|
1201 | uti596_reset_hardware ( &uti596_softc ); |
---|
1202 | |
---|
1203 | #ifdef DBG_RESET |
---|
1204 | uti596_diagnose(); |
---|
1205 | #endif |
---|
1206 | |
---|
1207 | /* |
---|
1208 | * Configure the 82596 |
---|
1209 | */ |
---|
1210 | uti596_configure( sc ); |
---|
1211 | |
---|
1212 | /* |
---|
1213 | * Set up the Individual (hardware) Address |
---|
1214 | */ |
---|
1215 | uti596_IAsetup ( sc ); |
---|
1216 | |
---|
1217 | sc->pCmdHead = sc->pCmdTail = sc->scb.pCmd = I596_NULL; |
---|
1218 | |
---|
1219 | /* restore the RFA */ |
---|
1220 | |
---|
1221 | if ( sc->pLastUnkRFD != I596_NULL ) { |
---|
1222 | sc-> pEndRFA = sc->pLastUnkRFD; /* The end position can be updated */ |
---|
1223 | sc-> pLastUnkRFD = I596_NULL; |
---|
1224 | } |
---|
1225 | |
---|
1226 | sc->pEndRFA->next = (i596_rfd*)word_swap((uint32_t)sc->pSavedRfdQueue); |
---|
1227 | if ( sc->pSavedRfdQueue != I596_NULL ) { |
---|
1228 | sc->pEndRFA = sc->pEndSavedQueue; |
---|
1229 | sc->pSavedRfdQueue = sc->pEndSavedQueue = I596_NULL; |
---|
1230 | sc -> countRFD = sc->rxBdCount ; |
---|
1231 | } |
---|
1232 | |
---|
1233 | /* Re-address the head of the RFA in the SCB */ |
---|
1234 | sc->scb.pRfd = sc->pBeginRFA; |
---|
1235 | sc->scb.rfd_pointer = word_swap((unsigned long)sc->pBeginRFA); |
---|
1236 | |
---|
1237 | /* Clear the status of all RFDs */ |
---|
1238 | uti596_clearListStatus( sc->pBeginRFA ); |
---|
1239 | |
---|
1240 | printk(("uti596_reset: Starting NIC\n")) |
---|
1241 | |
---|
1242 | /* Start the receiver */ |
---|
1243 | sc->scb.command = RX_START; |
---|
1244 | sc->started = 1; /* assume that the start is accepted */ |
---|
1245 | sc->resetDone = 1; |
---|
1246 | uti596_issueCA ( sc, UTI596_WAIT_FOR_CU_ACCEPT ); |
---|
1247 | |
---|
1248 | UTI_596_ASSERT(sc->pCmdHead == I596_NULL, "Reset: CMD not cleared\n") |
---|
1249 | |
---|
1250 | #ifdef DBG_RESET |
---|
1251 | printk(("uti596_reset: completed\n")) |
---|
1252 | #endif |
---|
1253 | } |
---|
1254 | |
---|
1255 | /* |
---|
1256 | * uti596_dequeue |
---|
1257 | * |
---|
1258 | * Remove an RFD from the received fram queue |
---|
1259 | * |
---|
1260 | * Input parameters: |
---|
1261 | * ppQ - a pointer to a i596_rfd pointer |
---|
1262 | * |
---|
1263 | * Output parameters: NONE |
---|
1264 | * |
---|
1265 | * Return value: |
---|
1266 | * pRfd - a pointer to the dequeued RFD |
---|
1267 | */ |
---|
1268 | i596_rfd * uti596_dequeue( |
---|
1269 | i596_rfd ** ppQ |
---|
1270 | ) |
---|
1271 | { |
---|
1272 | ISR_Level level; |
---|
1273 | i596_rfd * pRfd; |
---|
1274 | |
---|
1275 | _ISR_Local_disable(level); |
---|
1276 | |
---|
1277 | /* invalid address, or empty queue or emptied queue */ |
---|
1278 | if( ppQ == NULL || *ppQ == NULL || *ppQ == I596_NULL) { |
---|
1279 | _ISR_Local_enable(level); |
---|
1280 | return I596_NULL; |
---|
1281 | } |
---|
1282 | |
---|
1283 | /* |
---|
1284 | * Point to the dequeued buffer, then |
---|
1285 | * adjust the queue pointer and detach the buffer |
---|
1286 | */ |
---|
1287 | pRfd = *ppQ; |
---|
1288 | *ppQ = (i596_rfd *) word_swap ((unsigned long) pRfd->next); |
---|
1289 | pRfd->next = I596_NULL; /* unlink the rfd being returned */ |
---|
1290 | |
---|
1291 | _ISR_Local_enable(level); |
---|
1292 | return pRfd; |
---|
1293 | } |
---|
1294 | |
---|
1295 | /* |
---|
1296 | * uti596_append |
---|
1297 | * |
---|
1298 | * Remove an RFD buffer from the RFA and tack it on to |
---|
1299 | * the received frame queue for processing. |
---|
1300 | * |
---|
1301 | * Input parameters: |
---|
1302 | * ppQ - a pointer to the queue pointer |
---|
1303 | * pRfd - a pointer to the buffer to be returned |
---|
1304 | * |
---|
1305 | * Output parameters: NONE |
---|
1306 | * |
---|
1307 | * Return value: NONE |
---|
1308 | */ |
---|
1309 | |
---|
1310 | void uti596_append( |
---|
1311 | i596_rfd ** ppQ, |
---|
1312 | i596_rfd * pRfd |
---|
1313 | ) |
---|
1314 | { |
---|
1315 | |
---|
1316 | i596_rfd *p; |
---|
1317 | |
---|
1318 | if ( pRfd != NULL && pRfd != I596_NULL) { |
---|
1319 | pRfd -> next = I596_NULL; |
---|
1320 | pRfd -> cmd |= CMD_EOL; /* set EL bit */ |
---|
1321 | |
---|
1322 | if ( *ppQ == NULL || *ppQ == I596_NULL ) { |
---|
1323 | /* empty list */ |
---|
1324 | *ppQ = pRfd; |
---|
1325 | } |
---|
1326 | else { |
---|
1327 | /* walk to the end of the list */ |
---|
1328 | for ( p=*ppQ; |
---|
1329 | p->next != I596_NULL; |
---|
1330 | p=(i596_rfd *) word_swap ((unsigned long)p->next) ); |
---|
1331 | |
---|
1332 | /* append the rfd */ |
---|
1333 | p->cmd &= ~CMD_EOL; /* Clear EL bit at end */ |
---|
1334 | p->next = (i596_rfd *) word_swap ((unsigned long)pRfd); |
---|
1335 | } |
---|
1336 | } |
---|
1337 | else { |
---|
1338 | printk(("Illegal attempt to append: %p\n", pRfd)) |
---|
1339 | } |
---|
1340 | } |
---|
1341 | |
---|
1342 | /* |
---|
1343 | * uti596_supplyFD |
---|
1344 | * |
---|
1345 | * Return a buffer (RFD) to the receive frame area (RFA). |
---|
1346 | * Call with interrupts disabled. |
---|
1347 | * |
---|
1348 | * Input parameters: |
---|
1349 | * pRfd - a pointer to the buffer to be returned |
---|
1350 | * |
---|
1351 | * Output parameters: NONE |
---|
1352 | * |
---|
1353 | * Return value: NONE |
---|
1354 | */ |
---|
1355 | void uti596_supplyFD ( |
---|
1356 | i596_rfd * pRfd |
---|
1357 | ) |
---|
1358 | { |
---|
1359 | i596_rfd *pLastRfd; |
---|
1360 | |
---|
1361 | UTI_596_ASSERT(pRfd != I596_NULL, "Supplying NULL RFD!\n") |
---|
1362 | |
---|
1363 | pRfd -> cmd = CMD_EOL; |
---|
1364 | pRfd -> pRbd = I596_NULL; |
---|
1365 | pRfd -> next = I596_NULL; |
---|
1366 | pRfd -> stat = 0x0000; /* clear STAT_C and STAT_B bits */ |
---|
1367 | |
---|
1368 | /* |
---|
1369 | * Check if the list is empty: |
---|
1370 | */ |
---|
1371 | if ( uti596_softc.pBeginRFA == I596_NULL ) { |
---|
1372 | |
---|
1373 | /* Start a list with one entry */ |
---|
1374 | uti596_softc.pBeginRFA = uti596_softc.pEndRFA = pRfd; |
---|
1375 | UTI_596_ASSERT(uti596_softc.countRFD == 0, "Null begin, but non-zero count\n") |
---|
1376 | if ( uti596_softc.pLastUnkRFD != I596_NULL ) { |
---|
1377 | printk(("LastUnkRFD is NOT NULL!!\n")) |
---|
1378 | } |
---|
1379 | uti596_softc.countRFD = 1; |
---|
1380 | return; |
---|
1381 | } |
---|
1382 | |
---|
1383 | /* |
---|
1384 | * Check if the last RFD is used/read by the 596. |
---|
1385 | */ |
---|
1386 | pLastRfd = uti596_softc.pEndRFA; |
---|
1387 | |
---|
1388 | /* C = complete, B = busy (prefetched) */ |
---|
1389 | if ( pLastRfd != I596_NULL && ! (pLastRfd -> stat & ( STAT_C | STAT_B ) )) { |
---|
1390 | |
---|
1391 | /* |
---|
1392 | * Not yet too late to add it |
---|
1393 | */ |
---|
1394 | pLastRfd -> next = (i596_rfd *) word_swap ((unsigned long)pRfd); |
---|
1395 | pLastRfd -> cmd &= ~CMD_EOL; /* RESET_EL : reset EL bit to 0 */ |
---|
1396 | uti596_softc.countRFD++; /* Lets assume we add it successfully |
---|
1397 | If not, the RFD may be used, and may |
---|
1398 | decrement countRFD < 0 !! */ |
---|
1399 | /* |
---|
1400 | * Check if the last RFD was used while appending. |
---|
1401 | */ |
---|
1402 | if ( pLastRfd -> stat & ( STAT_C | STAT_B ) ) { /* completed or was prefetched */ |
---|
1403 | /* |
---|
1404 | * Either the EL bit of the last rfd has been read by the 82596, |
---|
1405 | * and it will stop after reception,( true when RESET_EL not reached ) or |
---|
1406 | * the EL bit was NOT read by the 82596 and it will use the linked |
---|
1407 | * RFD for the next reception. ( true when RESET_EL was reached ) |
---|
1408 | * So, it is unknown whether or not the linked rfd will be used. |
---|
1409 | * Therefore, the end of list CANNOT be updated. |
---|
1410 | */ |
---|
1411 | UTI_596_ASSERT ( uti596_softc.pLastUnkRFD == I596_NULL, "Too many Unk RFD's\n" ) |
---|
1412 | uti596_softc.pLastUnkRFD = pRfd; |
---|
1413 | return; |
---|
1414 | } |
---|
1415 | else { |
---|
1416 | /* |
---|
1417 | * The RFD being added was not touched by the 82596 |
---|
1418 | */ |
---|
1419 | if (uti596_softc.pLastUnkRFD != I596_NULL ) { |
---|
1420 | |
---|
1421 | uti596_append((i596_rfd **)&uti596_softc.pSavedRfdQueue, pRfd); /* Only here! saved Q */ |
---|
1422 | uti596_softc.pEndSavedQueue = pRfd; |
---|
1423 | uti596_softc.savedCount++; |
---|
1424 | uti596_softc.countRFD--; |
---|
1425 | |
---|
1426 | } |
---|
1427 | else { |
---|
1428 | |
---|
1429 | uti596_softc.pEndRFA = pRfd; /* the RFA has been extended */ |
---|
1430 | |
---|
1431 | if ( ( uti596_softc.scb.status & SCB_STAT_RNR || |
---|
1432 | uti596_softc.scb.status & RU_NO_RESOURCES ) && |
---|
1433 | uti596_softc.countRFD > 1 ) { |
---|
1434 | |
---|
1435 | /* Ensure that beginRFA is not EOL */ |
---|
1436 | uti596_softc.pBeginRFA -> cmd &= ~CMD_EOL; |
---|
1437 | |
---|
1438 | UTI_596_ASSERT(uti596_softc.pEndRFA -> next == I596_NULL, "supply: List buggered\n") |
---|
1439 | UTI_596_ASSERT(uti596_softc.pEndRFA -> cmd & CMD_EOL, "supply: No EOL at end.\n") |
---|
1440 | UTI_596_ASSERT(uti596_softc.scb.command == 0, "Supply: scb command must be zero\n") |
---|
1441 | |
---|
1442 | #ifdef DBG_MEM |
---|
1443 | printk(("uti596_supplyFD: starting receiver")) |
---|
1444 | #endif |
---|
1445 | |
---|
1446 | /* start the receiver */ |
---|
1447 | UTI_596_ASSERT(uti596_softc.pBeginRFA != I596_NULL, "rx start w/ NULL begin! \n") |
---|
1448 | uti596_softc.scb.pRfd = uti596_softc.pBeginRFA; |
---|
1449 | uti596_softc.scb.rfd_pointer = word_swap ((unsigned long) uti596_softc.pBeginRFA); |
---|
1450 | |
---|
1451 | /* Don't ack RNR! The receiver should be stopped in this case */ |
---|
1452 | uti596_softc.scb.command = RX_START | SCB_STAT_RNR; |
---|
1453 | |
---|
1454 | UTI_596_ASSERT( !(uti596_softc.scb.status & SCB_STAT_FR),"FRAME RECEIVED INT COMING!\n") |
---|
1455 | |
---|
1456 | /* send CA signal */ |
---|
1457 | uti596_issueCA ( &uti596_softc, UTI596_NO_WAIT ); |
---|
1458 | } |
---|
1459 | } |
---|
1460 | return; |
---|
1461 | } |
---|
1462 | } |
---|
1463 | else { |
---|
1464 | /* |
---|
1465 | * too late , pLastRfd in use ( or NULL ), |
---|
1466 | * in either case, EL bit has been read, and RNR condition will occur |
---|
1467 | */ |
---|
1468 | uti596_append( (i596_rfd **)&uti596_softc.pSavedRfdQueue, pRfd); /* save it for RNR */ |
---|
1469 | |
---|
1470 | uti596_softc.pEndSavedQueue = pRfd; /* reset end of saved queue */ |
---|
1471 | uti596_softc.savedCount++; |
---|
1472 | |
---|
1473 | return; |
---|
1474 | } |
---|
1475 | } |
---|
1476 | |
---|
1477 | /* |
---|
1478 | * send_packet |
---|
1479 | * |
---|
1480 | * Send a raw ethernet packet, add a |
---|
1481 | * transmit command to the CBL |
---|
1482 | * |
---|
1483 | * Input parameters: |
---|
1484 | * ifp - a pointer to the ifnet structure |
---|
1485 | * m - a pointer to the mbuf being sent |
---|
1486 | * |
---|
1487 | * Output parameters: NONE |
---|
1488 | * |
---|
1489 | * Return value: NONE |
---|
1490 | */ |
---|
1491 | void send_packet( |
---|
1492 | struct ifnet *ifp, struct mbuf *m |
---|
1493 | ) |
---|
1494 | { |
---|
1495 | i596_tbd *pPrev = I596_NULL; |
---|
1496 | i596_tbd *pRemainingTbdList; |
---|
1497 | i596_tbd *pTbd; |
---|
1498 | struct mbuf *n, *input_m = m; |
---|
1499 | uti596_softc_ *sc = ifp->if_softc; |
---|
1500 | struct mbuf *l = NULL; |
---|
1501 | unsigned int length = 0; |
---|
1502 | rtems_status_code status; |
---|
1503 | int bd_count = 0; |
---|
1504 | rtems_event_set events; |
---|
1505 | |
---|
1506 | /* |
---|
1507 | * For all mbufs in the chain, |
---|
1508 | * fill a transmit buffer descriptor for each |
---|
1509 | */ |
---|
1510 | pTbd = (i596_tbd*) word_swap ((unsigned long)sc->pTxCmd->pTbd); |
---|
1511 | |
---|
1512 | do { |
---|
1513 | if (m->m_len) { |
---|
1514 | /* |
---|
1515 | * Fill in the buffer descriptor |
---|
1516 | */ |
---|
1517 | length += m->m_len; |
---|
1518 | pTbd->data = (char *) word_swap ((unsigned long) mtod (m, void *)); |
---|
1519 | pTbd->size = m->m_len; |
---|
1520 | pPrev = pTbd; |
---|
1521 | pTbd = (i596_tbd *) word_swap ((unsigned long) pTbd->next); |
---|
1522 | l = m; |
---|
1523 | m = m->m_next; |
---|
1524 | } |
---|
1525 | else { |
---|
1526 | /* |
---|
1527 | * Just toss empty mbufs |
---|
1528 | */ |
---|
1529 | MFREE (m, n); |
---|
1530 | m = n; |
---|
1531 | if (l != NULL) |
---|
1532 | l->m_next = m; |
---|
1533 | } |
---|
1534 | } while( m != NULL && ++bd_count < 16 ); |
---|
1535 | |
---|
1536 | if ( length < UTI_596_ETH_MIN_SIZE ) { |
---|
1537 | pTbd->data = (char *) word_swap ((unsigned long) sc->zeroes); /* add padding to pTbd */ |
---|
1538 | pTbd->size = UTI_596_ETH_MIN_SIZE - length; /* zeroes have no effect on the CRC */ |
---|
1539 | } |
---|
1540 | else /* Don't use pTbd in the send routine */ |
---|
1541 | pTbd = pPrev; |
---|
1542 | |
---|
1543 | /* Disconnect the packet from the list of Tbd's */ |
---|
1544 | pRemainingTbdList = (i596_tbd *) word_swap ((unsigned long)pTbd->next); |
---|
1545 | pTbd->next = I596_NULL; |
---|
1546 | pTbd->size |= UTI_596_END_OF_FRAME; |
---|
1547 | |
---|
1548 | sc->rawsndcnt++; |
---|
1549 | |
---|
1550 | #ifdef DBG_SEND |
---|
1551 | printk(("send_packet: sending packet\n")) |
---|
1552 | #endif |
---|
1553 | |
---|
1554 | /* Sending Zero length packet: shouldn't happen */ |
---|
1555 | if (pTbd->size <= 0) return; |
---|
1556 | |
---|
1557 | #ifdef DBG_PACKETS |
---|
1558 | printk (("\nsend_packet: Transmitter adds packet\n")) |
---|
1559 | print_hdr ( sc->pTxCmd->pTbd->data ); /* print the first part */ |
---|
1560 | print_pkt ( sc->pTxCmd->pTbd->next->data ); /* print the first part */ |
---|
1561 | print_echo (sc->pTxCmd->pTbd->data); |
---|
1562 | #endif |
---|
1563 | |
---|
1564 | /* add the command to the output command queue */ |
---|
1565 | uti596_addCmd ( (i596_cmd *) sc->pTxCmd ); |
---|
1566 | |
---|
1567 | /* sleep until the command has been processed or Timeout encountered. */ |
---|
1568 | status= rtems_bsdnet_event_receive (INTERRUPT_EVENT, |
---|
1569 | RTEMS_WAIT|RTEMS_EVENT_ANY, |
---|
1570 | RTEMS_NO_TIMEOUT, |
---|
1571 | &events); |
---|
1572 | |
---|
1573 | if ( status != RTEMS_SUCCESSFUL ) { |
---|
1574 | printk(("Could not sleep %s\n", rtems_status_text(status))) |
---|
1575 | } |
---|
1576 | |
---|
1577 | #ifdef DBG_SEND |
---|
1578 | printk(("send_packet: RAW - wake\n")) |
---|
1579 | #endif |
---|
1580 | |
---|
1581 | sc->txInterrupts++; |
---|
1582 | |
---|
1583 | if ( sc->pTxCmd -> cmd.status & STAT_OK ) { |
---|
1584 | sc->stats.tx_packets++; |
---|
1585 | } |
---|
1586 | else { |
---|
1587 | |
---|
1588 | printk(("*** send_packet: Driver Error 0x%x\n", sc->pTxCmd -> cmd.status )) |
---|
1589 | |
---|
1590 | sc->stats.tx_errors++; |
---|
1591 | if ( sc->pTxCmd->cmd.status & 0x0020 ) |
---|
1592 | sc->stats.tx_retries_exceeded++; |
---|
1593 | if (!(sc->pTxCmd->cmd.status & 0x0040)) |
---|
1594 | sc->stats.tx_heartbeat_errors++; |
---|
1595 | if ( sc->pTxCmd->cmd.status & 0x0400 ) |
---|
1596 | sc->stats.tx_carrier_errors++; |
---|
1597 | if ( sc->pTxCmd->cmd.status & 0x0800 ) |
---|
1598 | sc->stats.collisions++; |
---|
1599 | if ( sc->pTxCmd->cmd.status & 0x1000 ) |
---|
1600 | sc->stats.tx_aborted_errors++; |
---|
1601 | } /* end if stat_ok */ |
---|
1602 | |
---|
1603 | /* |
---|
1604 | * Restore the transmitted buffer descriptor chain. |
---|
1605 | */ |
---|
1606 | pTbd -> next = (i596_tbd *) word_swap ((unsigned long)pRemainingTbdList); |
---|
1607 | |
---|
1608 | /* |
---|
1609 | * Free the mbufs used by the sender. |
---|
1610 | */ |
---|
1611 | m = input_m; |
---|
1612 | while ( m != NULL ) { |
---|
1613 | MFREE(m,n); |
---|
1614 | m = n; |
---|
1615 | } |
---|
1616 | } |
---|
1617 | |
---|
1618 | /*********************************************************************** |
---|
1619 | * Function: uti596_attach |
---|
1620 | * |
---|
1621 | * Description: |
---|
1622 | * Configure the driver, and connect to the network stack |
---|
1623 | * |
---|
1624 | * Algorithm: |
---|
1625 | * |
---|
1626 | * Check parameters in the ifconfig structure, and |
---|
1627 | * set driver parameters accordingly. |
---|
1628 | * Initialize required rx and tx buffers. |
---|
1629 | * Link driver data structure onto device list. |
---|
1630 | * Return 1 on successful completion. |
---|
1631 | * |
---|
1632 | ***********************************************************************/ |
---|
1633 | |
---|
1634 | int uti596_attach( |
---|
1635 | struct rtems_bsdnet_ifconfig * pConfig, |
---|
1636 | int attaching |
---|
1637 | ) |
---|
1638 | { |
---|
1639 | uti596_softc_ *sc = &uti596_softc; /* device dependent data structure */ |
---|
1640 | struct ifnet * ifp = (struct ifnet *)&sc->arpcom.ac_if; /* ifnet structure */ |
---|
1641 | int unitNumber; |
---|
1642 | char *unitName; |
---|
1643 | #if defined(mvme167) |
---|
1644 | unsigned char j1; /* State of J1 jumpers */ |
---|
1645 | char *pAddr; |
---|
1646 | int addr; |
---|
1647 | #endif |
---|
1648 | |
---|
1649 | #ifdef DBG_ATTACH |
---|
1650 | printk(("uti596_attach: begins\n")) |
---|
1651 | #endif |
---|
1652 | |
---|
1653 | /* The NIC is not started yet */ |
---|
1654 | sc->started = 0; |
---|
1655 | |
---|
1656 | /* Indicate to ULCS that this is initialized */ |
---|
1657 | ifp->if_softc = (void *)sc; |
---|
1658 | sc->pScp = NULL; |
---|
1659 | |
---|
1660 | /* Parse driver name */ |
---|
1661 | if ((unitNumber = rtems_bsdnet_parse_driver_name (pConfig, &unitName)) < 0) |
---|
1662 | return 0; |
---|
1663 | |
---|
1664 | ifp->if_name = unitName; |
---|
1665 | ifp->if_unit = unitNumber; |
---|
1666 | |
---|
1667 | /* Assign mtu */ |
---|
1668 | if ( pConfig -> mtu ) |
---|
1669 | ifp->if_mtu = pConfig -> mtu; |
---|
1670 | else |
---|
1671 | ifp->if_mtu = ETHERMTU; |
---|
1672 | |
---|
1673 | /* |
---|
1674 | * Check whether parameters should be obtained from NVRAM. If |
---|
1675 | * yes, and if an IP address, netmask, or ethernet address are |
---|
1676 | * provided in NVRAM, cheat, and stuff them into the ifconfig |
---|
1677 | * structure, OVERRIDING and existing or NULL values. |
---|
1678 | * |
---|
1679 | * Warning: If values are provided in NVRAM, the ifconfig entries |
---|
1680 | * must be NULL because buffer memory allocated to hold the |
---|
1681 | * structure values is unrecoverable and would be lost here. |
---|
1682 | */ |
---|
1683 | |
---|
1684 | #if defined(mvme167) |
---|
1685 | /* Read the J1 header */ |
---|
1686 | j1 = (unsigned char)(lcsr->vector_base & 0xFF); |
---|
1687 | |
---|
1688 | if ( !(j1 & 0x10) ) { |
---|
1689 | /* Jumper J1-4 is on, configure from NVRAM */ |
---|
1690 | |
---|
1691 | if ( (addr = nvram->ipaddr) ) { |
---|
1692 | /* We have a non-zero entry, copy the value */ |
---|
1693 | if ( (pAddr = malloc ( INET_ADDR_MAX_BUF_SIZE, 0, M_NOWAIT )) ) |
---|
1694 | pConfig->ip_address = (char *)inet_ntop(AF_INET, &addr, pAddr, INET_ADDR_MAX_BUF_SIZE -1 ); |
---|
1695 | else |
---|
1696 | rtems_panic("Can't allocate ip_address buffer!\n"); |
---|
1697 | } |
---|
1698 | |
---|
1699 | if ( (addr = nvram->netmask) ) { |
---|
1700 | /* We have a non-zero entry, copy the value */ |
---|
1701 | if ( (pAddr = malloc ( INET_ADDR_MAX_BUF_SIZE, 0, M_NOWAIT )) ) |
---|
1702 | pConfig->ip_netmask = (char *)inet_ntop(AF_INET, &addr, pAddr, INET_ADDR_MAX_BUF_SIZE -1 ); |
---|
1703 | else |
---|
1704 | rtems_panic("Can't allocate ip_netmask buffer!\n"); |
---|
1705 | } |
---|
1706 | |
---|
1707 | /* Ethernet address requires special handling -- it must be copied into |
---|
1708 | * the arpcom struct. The following if construct serves only to give the |
---|
1709 | * NVRAM parameter the highest priority if J1-4 indicates we are configuring |
---|
1710 | * from NVRAM. |
---|
1711 | * |
---|
1712 | * If the ethernet address is specified in NVRAM, go ahead and copy it. |
---|
1713 | * (ETHER_ADDR_LEN = 6 bytes). |
---|
1714 | */ |
---|
1715 | if ( nvram->enaddr[0] || nvram->enaddr[1] || nvram->enaddr[2] ) { |
---|
1716 | /* Anything in the first three bytes indicates a non-zero entry, copy value */ |
---|
1717 | memcpy ((void *)sc->arpcom.ac_enaddr, &nvram->enaddr, ETHER_ADDR_LEN); |
---|
1718 | } |
---|
1719 | else if ( pConfig->hardware_address) { |
---|
1720 | /* There is no entry in NVRAM, but there is in the ifconfig struct, so use it. */ |
---|
1721 | memcpy ((void *)sc->arpcom.ac_enaddr, pConfig->hardware_address, ETHER_ADDR_LEN); |
---|
1722 | } |
---|
1723 | else { |
---|
1724 | /* There is no ethernet address provided, so it will be read |
---|
1725 | * from BBRAM at $FFFC1F2C by default. [mvme167 manual p. 1-47] |
---|
1726 | */ |
---|
1727 | memcpy ((void *)sc->arpcom.ac_enaddr, (char *)0xFFFC1F2C, ETHER_ADDR_LEN); |
---|
1728 | } |
---|
1729 | } |
---|
1730 | else if ( pConfig->hardware_address) { |
---|
1731 | /* We are not configuring from NVRAM (J1-4 is off), and the ethernet address |
---|
1732 | * is given in the ifconfig structure. Copy it. |
---|
1733 | */ |
---|
1734 | memcpy ((void *)sc->arpcom.ac_enaddr, pConfig->hardware_address, ETHER_ADDR_LEN); |
---|
1735 | } |
---|
1736 | else |
---|
1737 | #endif |
---|
1738 | { |
---|
1739 | /* We are not configuring from NVRAM (J1-4 is off), and there is no ethernet |
---|
1740 | * address provided in the ifconfig struct, so it will be read from BBRAM at |
---|
1741 | * $FFFC1F2C by default. [mvme167 manual p. 1-47] |
---|
1742 | */ |
---|
1743 | memcpy ((void *)sc->arpcom.ac_enaddr, (char *)0xFFFC1F2C, ETHER_ADDR_LEN); |
---|
1744 | } |
---|
1745 | |
---|
1746 | /* Possibly override default acceptance of broadcast packets */ |
---|
1747 | if (pConfig->ignore_broadcast) |
---|
1748 | uti596initSetup[8] |= 0x02; |
---|
1749 | |
---|
1750 | /* Assign requested receive buffer descriptor count */ |
---|
1751 | if (pConfig->rbuf_count) |
---|
1752 | sc->rxBdCount = pConfig->rbuf_count; |
---|
1753 | else |
---|
1754 | sc->rxBdCount = RX_BUF_COUNT; |
---|
1755 | |
---|
1756 | /* Assign requested tx buffer descriptor count */ |
---|
1757 | if (pConfig->xbuf_count) |
---|
1758 | sc->txBdCount = pConfig->xbuf_count; |
---|
1759 | else |
---|
1760 | sc->txBdCount = TX_BUF_COUNT * TX_BD_PER_BUF; |
---|
1761 | |
---|
1762 | /* Set up fields in the ifnet structure*/ |
---|
1763 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX; |
---|
1764 | ifp->if_snd.ifq_maxlen = ifqmaxlen; |
---|
1765 | ifp->if_init = uti596_init; |
---|
1766 | ifp->if_ioctl = uti596_ioctl; |
---|
1767 | ifp->if_start = uti596_start; |
---|
1768 | ifp->if_output = ether_output; |
---|
1769 | |
---|
1770 | /* uti596_softc housekeeping */ |
---|
1771 | sc->started = 1; |
---|
1772 | sc->pInboundFrameQueue = I596_NULL; |
---|
1773 | sc->scb.command = 0; |
---|
1774 | |
---|
1775 | /* |
---|
1776 | * Attach the interface |
---|
1777 | */ |
---|
1778 | if_attach (ifp); |
---|
1779 | ether_ifattach (ifp); |
---|
1780 | return 1; |
---|
1781 | } |
---|
1782 | |
---|
1783 | /*********************************************************************** |
---|
1784 | * Function: uti596_start |
---|
1785 | * |
---|
1786 | * Description: |
---|
1787 | * start the driver |
---|
1788 | * |
---|
1789 | * Algorithm: |
---|
1790 | * send an event to the tx task |
---|
1791 | * set the if_flags |
---|
1792 | * |
---|
1793 | ***********************************************************************/ |
---|
1794 | static void uti596_start( |
---|
1795 | struct ifnet *ifp |
---|
1796 | ) |
---|
1797 | { |
---|
1798 | uti596_softc_ *sc = ifp->if_softc; |
---|
1799 | |
---|
1800 | #ifdef DBG_START |
---|
1801 | printk(("uti596_start: begins\n")) |
---|
1802 | #endif |
---|
1803 | |
---|
1804 | rtems_bsdnet_event_send (sc->txDaemonTid, START_TRANSMIT_EVENT); |
---|
1805 | ifp->if_flags |= IFF_OACTIVE; |
---|
1806 | } |
---|
1807 | |
---|
1808 | /*********************************************************************** |
---|
1809 | * Function: uti596_init |
---|
1810 | * |
---|
1811 | * Description: |
---|
1812 | * driver initialization |
---|
1813 | * |
---|
1814 | * Algorithm: |
---|
1815 | * initialize the 82596 |
---|
1816 | * start driver tx and rx tasks, and reset task |
---|
1817 | * send the RX_START command the the RU |
---|
1818 | * set if_flags |
---|
1819 | * |
---|
1820 | * |
---|
1821 | ***********************************************************************/ |
---|
1822 | void uti596_init( |
---|
1823 | void * arg |
---|
1824 | ) |
---|
1825 | { |
---|
1826 | uti596_softc_ *sc = arg; |
---|
1827 | struct ifnet *ifp = (struct ifnet *)&sc->arpcom.ac_if; |
---|
1828 | |
---|
1829 | if (sc->txDaemonTid == 0) { |
---|
1830 | |
---|
1831 | /* |
---|
1832 | * Initialize the 82596 |
---|
1833 | */ |
---|
1834 | #ifdef DBG_INIT |
---|
1835 | printk(("uti596_init: begins\nuti596_init: initializing the 82596...\n")) |
---|
1836 | #endif |
---|
1837 | uti596_initialize_hardware(sc); |
---|
1838 | |
---|
1839 | /* |
---|
1840 | * Start driver tasks |
---|
1841 | */ |
---|
1842 | #ifdef DBG_INIT |
---|
1843 | printk(("uti596_init: starting driver tasks...\n")) |
---|
1844 | #endif |
---|
1845 | sc->txDaemonTid = rtems_bsdnet_newproc ("UTtx", 2*4096, uti596_txDaemon, (void *)sc); |
---|
1846 | sc->rxDaemonTid = rtems_bsdnet_newproc ("UTrx", 2*4096, uti596_rxDaemon, (void *)sc); |
---|
1847 | sc->resetDaemonTid = rtems_bsdnet_newproc ("UTrt", 2*4096, uti596_resetDaemon, (void *)sc); |
---|
1848 | |
---|
1849 | #ifdef DBG_INIT |
---|
1850 | printk(("uti596_init: After attach, status of board = 0x%x\n", sc->scb.status )) |
---|
1851 | #endif |
---|
1852 | } |
---|
1853 | |
---|
1854 | /* |
---|
1855 | * In case the ISR discovers there are no resources it reclaims |
---|
1856 | * them and restarts |
---|
1857 | */ |
---|
1858 | sc->started = 1; |
---|
1859 | |
---|
1860 | /* |
---|
1861 | * Enable receiver |
---|
1862 | */ |
---|
1863 | #ifdef DBG_INIT |
---|
1864 | printk(("uti596_init: enabling the reciever...\n" )) |
---|
1865 | #endif |
---|
1866 | sc->scb.command = RX_START; |
---|
1867 | uti596_issueCA ( sc, UTI596_WAIT_FOR_CU_ACCEPT ); |
---|
1868 | |
---|
1869 | /* |
---|
1870 | * Tell the world that we're running. |
---|
1871 | */ |
---|
1872 | ifp->if_flags |= IFF_RUNNING; |
---|
1873 | #ifdef DBG_INIT |
---|
1874 | printk(("uti596_init: completed.\n")) |
---|
1875 | #endif |
---|
1876 | } |
---|
1877 | |
---|
1878 | /*********************************************************************** |
---|
1879 | * Function: uti596stop |
---|
1880 | * |
---|
1881 | * Description: |
---|
1882 | * stop the driver |
---|
1883 | * |
---|
1884 | * Algorithm: |
---|
1885 | * mark driver as not started, |
---|
1886 | * mark transmitter as busy |
---|
1887 | * abort any transmissions/receptions |
---|
1888 | * clean-up all buffers ( RFD's et. al. ) |
---|
1889 | * |
---|
1890 | * |
---|
1891 | ***********************************************************************/ |
---|
1892 | |
---|
1893 | /* static */ void uti596_stop( |
---|
1894 | uti596_softc_ *sc |
---|
1895 | ) |
---|
1896 | { |
---|
1897 | struct ifnet *ifp = (struct ifnet *)&sc->arpcom.ac_if; |
---|
1898 | |
---|
1899 | ifp->if_flags &= ~IFF_RUNNING; |
---|
1900 | sc->started = 0; |
---|
1901 | |
---|
1902 | #ifdef DBG_STOP |
---|
1903 | printk(("uti596stop: %s: Shutting down ethercard, status was %4.4x.\n", |
---|
1904 | uti596_softc.arpcom.ac_if.if_name, uti596_softc.scb.status)) |
---|
1905 | #endif |
---|
1906 | |
---|
1907 | printk(("Stopping interface\n")) |
---|
1908 | sc->scb.command = CUC_ABORT | RX_ABORT; |
---|
1909 | i82596->chan_attn = 0x00000000; |
---|
1910 | } |
---|
1911 | |
---|
1912 | /*********************************************************************** |
---|
1913 | * Function: void uti596_txDaemon |
---|
1914 | * |
---|
1915 | * Description: Transmit task |
---|
1916 | * |
---|
1917 | * Algorithm: Get mbufs to be transmitted, stuff into RFDs, send |
---|
1918 | * |
---|
1919 | ***********************************************************************/ |
---|
1920 | |
---|
1921 | void uti596_txDaemon( |
---|
1922 | void *arg |
---|
1923 | ) |
---|
1924 | { |
---|
1925 | uti596_softc_ *sc = (uti596_softc_ *)arg; |
---|
1926 | struct ifnet *ifp = (struct ifnet *)&sc->arpcom.ac_if; |
---|
1927 | struct mbuf *m; |
---|
1928 | rtems_event_set events; |
---|
1929 | |
---|
1930 | for (;;) { |
---|
1931 | /* |
---|
1932 | * Wait for packet from stack |
---|
1933 | */ |
---|
1934 | rtems_bsdnet_event_receive (START_TRANSMIT_EVENT, |
---|
1935 | RTEMS_EVENT_ANY | RTEMS_WAIT, |
---|
1936 | RTEMS_NO_TIMEOUT, &events); |
---|
1937 | |
---|
1938 | /* |
---|
1939 | * Send packets till queue is empty. |
---|
1940 | * Ensure that irq is on before sending. |
---|
1941 | */ |
---|
1942 | for (;;) { |
---|
1943 | /* Get the next mbuf chain to transmit. */ |
---|
1944 | IF_DEQUEUE(&ifp->if_snd, m); |
---|
1945 | if (!m) |
---|
1946 | break; |
---|
1947 | |
---|
1948 | send_packet (ifp, m); /* blocks */ |
---|
1949 | } |
---|
1950 | ifp->if_flags &= ~IFF_OACTIVE; /* no more to send, mark output inactive */ |
---|
1951 | } |
---|
1952 | } |
---|
1953 | |
---|
1954 | /*********************************************************************** |
---|
1955 | * Function: uti596_rxDaemon |
---|
1956 | * |
---|
1957 | * Description: Receiver task |
---|
1958 | * |
---|
1959 | * Algorithm: Extract the packet from an RFD, and place into an |
---|
1960 | * mbuf chain. Place the mbuf chain in the network task |
---|
1961 | * queue. Assumes that the frame check sequence is removed |
---|
1962 | * by the 82596. |
---|
1963 | * |
---|
1964 | ***********************************************************************/ |
---|
1965 | |
---|
1966 | /* static */ void uti596_rxDaemon( |
---|
1967 | void *arg |
---|
1968 | ) |
---|
1969 | { |
---|
1970 | uti596_softc_ *sc = (uti596_softc_ *)arg; |
---|
1971 | struct ifnet *ifp = (struct ifnet *)&sc->arpcom.ac_if; |
---|
1972 | struct mbuf *m; |
---|
1973 | |
---|
1974 | i596_rfd *pRfd; |
---|
1975 | ISR_Level level; |
---|
1976 | rtems_id tid; |
---|
1977 | rtems_event_set events; |
---|
1978 | struct ether_header *eh; |
---|
1979 | |
---|
1980 | int frames = 0; |
---|
1981 | |
---|
1982 | #ifdef DBG_RX |
---|
1983 | printk(("uti596_rxDaemon: begin\n")) |
---|
1984 | printk(("&scb = %p, pRfd = %p\n", &sc->scb,sc->scb.pRfd)) |
---|
1985 | #endif |
---|
1986 | |
---|
1987 | rtems_task_ident (0, 0, &tid); |
---|
1988 | |
---|
1989 | for(;;) { |
---|
1990 | /* |
---|
1991 | * Wait for packet. |
---|
1992 | */ |
---|
1993 | #ifdef DBG_RX |
---|
1994 | printk(("uti596_rxDaemon: Receiver sleeps\n")) |
---|
1995 | #endif |
---|
1996 | |
---|
1997 | rtems_bsdnet_event_receive (INTERRUPT_EVENT, |
---|
1998 | RTEMS_WAIT|RTEMS_EVENT_ANY, |
---|
1999 | RTEMS_NO_TIMEOUT, |
---|
2000 | &events); |
---|
2001 | |
---|
2002 | #ifdef DBG_RX |
---|
2003 | printk(("uti596_rxDaemon: Receiver wakes\n")) |
---|
2004 | #endif |
---|
2005 | /* |
---|
2006 | * While received frames are available. Note that the frame may be |
---|
2007 | * a fragment, so it is NOT a complete packet. |
---|
2008 | */ |
---|
2009 | pRfd = uti596_dequeue( (i596_rfd **)&sc->pInboundFrameQueue); |
---|
2010 | while ( pRfd && |
---|
2011 | pRfd != I596_NULL && |
---|
2012 | pRfd -> stat & STAT_C ) |
---|
2013 | { |
---|
2014 | |
---|
2015 | if ( pRfd->stat & STAT_OK) { /* a good frame */ |
---|
2016 | int pkt_len = pRfd->count & 0x3fff; /* the actual # of bytes received */ |
---|
2017 | |
---|
2018 | #ifdef DBG_RX |
---|
2019 | printk(("uti596_rxDaemon: Good frame, @%p, data @%p length %d\n", pRfd, pRfd -> data , pkt_len)) |
---|
2020 | #endif |
---|
2021 | frames++; |
---|
2022 | |
---|
2023 | /* |
---|
2024 | * Allocate an mbuf to give to the stack |
---|
2025 | * The format of the data portion of the RFD is: |
---|
2026 | * <ethernet header, payload>. |
---|
2027 | * The FRAME CHECK SEQUENCE / CRC is stripped by the uti596. |
---|
2028 | * This is to be optimized later.... should not have to memcopy! |
---|
2029 | */ |
---|
2030 | MGETHDR(m, M_WAIT, MT_DATA); |
---|
2031 | MCLGET(m, M_WAIT); |
---|
2032 | |
---|
2033 | m->m_pkthdr.rcvif = ifp; |
---|
2034 | /* move everything into an mbuf */ |
---|
2035 | memcpy(m->m_data, (const char *)pRfd->data, pkt_len); |
---|
2036 | m->m_len = m->m_pkthdr.len = pkt_len - sizeof(struct ether_header) - 4; |
---|
2037 | |
---|
2038 | /* move the header to an mbuf */ |
---|
2039 | eh = mtod (m, struct ether_header *); |
---|
2040 | m->m_data += sizeof(struct ether_header); |
---|
2041 | |
---|
2042 | #ifdef DBG_PACKETS |
---|
2043 | { |
---|
2044 | int i; |
---|
2045 | printk(("uti596_rxDaemon: mbuf contains:\n")) |
---|
2046 | print_eth( (char *) (((int)m->m_data)-sizeof(struct ether_header))); |
---|
2047 | for ( i = 0; i<20; i++) { |
---|
2048 | printk((".")) |
---|
2049 | } |
---|
2050 | } |
---|
2051 | #endif |
---|
2052 | |
---|
2053 | ether_input (ifp, eh, m); |
---|
2054 | |
---|
2055 | } /* end if STAT_OK */ |
---|
2056 | |
---|
2057 | else { |
---|
2058 | /* |
---|
2059 | * A bad frame is present: Note that this could be the last RFD! |
---|
2060 | */ |
---|
2061 | #ifdef DBG_RX |
---|
2062 | printk(("uti596_rxDaemon: Bad frame\n")) |
---|
2063 | #endif |
---|
2064 | /* |
---|
2065 | * FIX ME: use the statistics from the SCB |
---|
2066 | */ |
---|
2067 | sc->stats.rx_errors++; |
---|
2068 | if ((sc->scb.pRfd->stat) & 0x0001) |
---|
2069 | sc->stats.collisions++; |
---|
2070 | if ((sc->scb.pRfd->stat) & 0x0080) |
---|
2071 | sc->stats.rx_length_errors++; |
---|
2072 | if ((sc->scb.pRfd->stat) & 0x0100) |
---|
2073 | sc->stats.rx_over_errors++; |
---|
2074 | if ((sc->scb.pRfd->stat) & 0x0200) |
---|
2075 | sc->stats.rx_fifo_errors++; |
---|
2076 | if ((sc->scb.pRfd->stat) & 0x0400) |
---|
2077 | sc->stats.rx_frame_errors++; |
---|
2078 | if ((sc->scb.pRfd->stat) & 0x0800) |
---|
2079 | sc->stats.rx_crc_errors++; |
---|
2080 | if ((sc->scb.pRfd->stat) & 0x1000) |
---|
2081 | sc->stats.rx_length_errors++; |
---|
2082 | } |
---|
2083 | |
---|
2084 | UTI_596_ASSERT(pRfd != I596_NULL, "Supplying NULL RFD\n") |
---|
2085 | |
---|
2086 | _ISR_Local_disable(level); |
---|
2087 | uti596_supplyFD ( pRfd ); /* Return RFD to RFA. */ |
---|
2088 | _ISR_Local_enable(level); |
---|
2089 | |
---|
2090 | pRfd = uti596_dequeue( (i596_rfd **)&sc->pInboundFrameQueue); /* grab next frame */ |
---|
2091 | |
---|
2092 | } /* end while */ |
---|
2093 | } /* end for() */ |
---|
2094 | |
---|
2095 | #ifdef DBG_RX |
---|
2096 | printk (("uti596_rxDaemon: frames ... %d\n", frames)) |
---|
2097 | #endif |
---|
2098 | } |
---|
2099 | |
---|
2100 | /*********************************************************************** |
---|
2101 | * Function: void uti596_resetDaemon |
---|
2102 | * |
---|
2103 | * Description: |
---|
2104 | ***********************************************************************/ |
---|
2105 | void uti596_resetDaemon( |
---|
2106 | void *arg |
---|
2107 | ) |
---|
2108 | { |
---|
2109 | uti596_softc_ *sc = (uti596_softc_ *)arg; |
---|
2110 | rtems_event_set events; |
---|
2111 | rtems_time_of_day tm_struct; |
---|
2112 | |
---|
2113 | /* struct ifnet *ifp = &sc->arpcom.ac_if; */ |
---|
2114 | |
---|
2115 | for (;;) { |
---|
2116 | /* Wait for reset event from ISR */ |
---|
2117 | rtems_bsdnet_event_receive (NIC_RESET_EVENT, |
---|
2118 | RTEMS_EVENT_ANY | RTEMS_WAIT, |
---|
2119 | RTEMS_NO_TIMEOUT, &events); |
---|
2120 | |
---|
2121 | rtems_clock_get_tod(&tm_struct); |
---|
2122 | printk(("reset daemon: Resetting NIC @ %" PRIu32 ":%" PRIu32 ":%" PRIu32 " \n", |
---|
2123 | tm_struct.hour, tm_struct.minute, tm_struct.second)) |
---|
2124 | |
---|
2125 | sc->stats.nic_reset_count++; |
---|
2126 | /* Reinitialize the LANC */ |
---|
2127 | rtems_bsdnet_semaphore_obtain (); |
---|
2128 | uti596_reset(); |
---|
2129 | rtems_bsdnet_semaphore_release (); |
---|
2130 | } |
---|
2131 | } |
---|
2132 | |
---|
2133 | /*********************************************************************** |
---|
2134 | * Function: uti596_DynamicInterruptHandler |
---|
2135 | * |
---|
2136 | * Description: |
---|
2137 | * This is the interrupt handler for the uti596 board |
---|
2138 | * |
---|
2139 | ***********************************************************************/ |
---|
2140 | |
---|
2141 | /* static */ rtems_isr uti596_DynamicInterruptHandler( |
---|
2142 | rtems_vector_number irq |
---|
2143 | ) |
---|
2144 | { |
---|
2145 | int fullStatus; |
---|
2146 | |
---|
2147 | #ifdef DBG_ISR |
---|
2148 | printk(("uti596_DynamicInterruptHandler: begins")) |
---|
2149 | #endif |
---|
2150 | |
---|
2151 | uti596_wait (&uti596_softc, UTI596_WAIT_FOR_CU_ACCEPT); |
---|
2152 | |
---|
2153 | scbStatus = (fullStatus = uti596_softc.scb.status) & 0xf000; |
---|
2154 | |
---|
2155 | if ( scbStatus ) { |
---|
2156 | /* acknowledge interrupts */ |
---|
2157 | |
---|
2158 | /* Write to the ICLR bit in the PCCchip2 control registers to clear |
---|
2159 | * the INT status bit. Clearing INT here *before* sending the CA signal |
---|
2160 | * to the 82596 should ensure that interrupts won't be lost. |
---|
2161 | */ |
---|
2162 | pccchip2->LANC_int_ctl |=0x08; |
---|
2163 | pccchip2->LANC_berr_ctl |=0x08; |
---|
2164 | |
---|
2165 | /* printk(("***INFO: ACK %x\n", scbStatus))*/ |
---|
2166 | |
---|
2167 | /* Send the CA signal to acknowledge interrupt */ |
---|
2168 | uti596_softc.scb.command = scbStatus; |
---|
2169 | uti596_issueCA ( &uti596_softc, UTI596_NO_WAIT ); |
---|
2170 | |
---|
2171 | if( uti596_softc.resetDone ) { |
---|
2172 | /* stack is attached */ |
---|
2173 | uti596_wait ( &uti596_softc, UTI596_WAIT_FOR_CU_ACCEPT ); |
---|
2174 | } |
---|
2175 | else { |
---|
2176 | printk(("***INFO: ACK'd w/o processing. status = %x\n", scbStatus)) |
---|
2177 | return; |
---|
2178 | } |
---|
2179 | } |
---|
2180 | else { |
---|
2181 | #ifndef IGNORE_SPURIOUS_IRQ |
---|
2182 | printk(("\n***ERROR: Spurious interrupt (full status 0x%x). Resetting...\n", fullStatus)) |
---|
2183 | uti596_softc.nic_reset = 1; |
---|
2184 | #endif |
---|
2185 | } |
---|
2186 | |
---|
2187 | if ( (scbStatus & SCB_STAT_CX) && !(scbStatus & SCB_STAT_CNA) ) { |
---|
2188 | printk(("\n*****ERROR: Command Complete, and CNA available: 0x%x\nResetting...", scbStatus)) |
---|
2189 | uti596_softc.nic_reset = 1; |
---|
2190 | return; |
---|
2191 | } |
---|
2192 | |
---|
2193 | if ( !(scbStatus & SCB_STAT_CX) && (scbStatus & SCB_STAT_CNA) ) { |
---|
2194 | printk(("\n*****ERROR: CNA, NO CX:0x%x\nResetting...",scbStatus)) |
---|
2195 | uti596_softc.nic_reset = 1; |
---|
2196 | return; |
---|
2197 | } |
---|
2198 | |
---|
2199 | if ( scbStatus & SCB_CUS_SUSPENDED ) { |
---|
2200 | printk(("\n*****ERROR: Command unit suspended!:0x%x\nResetting...",scbStatus)) |
---|
2201 | uti596_softc.nic_reset = 1; |
---|
2202 | return; |
---|
2203 | } |
---|
2204 | |
---|
2205 | if ( scbStatus & RU_SUSPENDED ) { |
---|
2206 | printk(("\n*****ERROR: Receive unit suspended!:0x%x\nResetting...",scbStatus)) |
---|
2207 | uti596_softc.nic_reset = 1; |
---|
2208 | return; |
---|
2209 | } |
---|
2210 | |
---|
2211 | if ( scbStatus & SCB_STAT_RNR ) { |
---|
2212 | printk(("\n*****WARNING: RNR %x\n",scbStatus)) |
---|
2213 | if (uti596_softc.pBeginRFA != I596_NULL) { |
---|
2214 | printk(("*****INFO: RFD cmd: %x status:%x\n", uti596_softc.pBeginRFA->cmd, |
---|
2215 | uti596_softc.pBeginRFA->stat)) |
---|
2216 | } |
---|
2217 | else { |
---|
2218 | printk(("*****WARNING: RNR condition with NULL BeginRFA\n")) |
---|
2219 | } |
---|
2220 | } |
---|
2221 | |
---|
2222 | /* |
---|
2223 | * Receive Unit Control |
---|
2224 | * a frame is received |
---|
2225 | */ |
---|
2226 | if ( scbStatus & SCB_STAT_FR ) { |
---|
2227 | uti596_softc.rxInterrupts++; |
---|
2228 | |
---|
2229 | #ifdef DBG_ISR |
---|
2230 | printk(("uti596_DynamicInterruptHandler: Frame received\n")) |
---|
2231 | #endif |
---|
2232 | if ( uti596_softc.pBeginRFA == I596_NULL || |
---|
2233 | !( uti596_softc.pBeginRFA -> stat & STAT_C)) { |
---|
2234 | #ifndef IGNORE_NO_RFA |
---|
2235 | uti596_dump_scb(); |
---|
2236 | uti596_softc.nic_reset = 1; |
---|
2237 | #endif |
---|
2238 | } |
---|
2239 | else { |
---|
2240 | while ( uti596_softc.pBeginRFA != I596_NULL && |
---|
2241 | ( uti596_softc.pBeginRFA -> stat & STAT_C)) { |
---|
2242 | |
---|
2243 | #ifdef DBG_ISR |
---|
2244 | printk(("uti596_DynamicInterruptHandler: pBeginRFA != NULL\n")) |
---|
2245 | #endif |
---|
2246 | count_rx ++; |
---|
2247 | #ifndef IGNORE_MULTIPLE_RF |
---|
2248 | if ( count_rx > 1) { |
---|
2249 | printk(("****WARNING: Received %i frames on 1 interrupt \n", count_rx)) |
---|
2250 | } |
---|
2251 | #endif |
---|
2252 | /* Give Received Frame to the ULCS */ |
---|
2253 | uti596_softc.countRFD--; |
---|
2254 | |
---|
2255 | if ( uti596_softc.countRFD < 0 ) { |
---|
2256 | printk(("ISR: Count < 0 !!! count == %d, beginRFA = %p\n", |
---|
2257 | uti596_softc.countRFD, uti596_softc.pBeginRFA)) |
---|
2258 | } |
---|
2259 | uti596_softc.stats.rx_packets++; |
---|
2260 | /* the rfd next link is stored with upper and lower words swapped so read it that way */ |
---|
2261 | pIsrRfd = (i596_rfd *) word_swap ((unsigned long)uti596_softc.pBeginRFA->next); |
---|
2262 | /* the append destroys the link */ |
---|
2263 | uti596_append( (i596_rfd **)&uti596_softc.pInboundFrameQueue , uti596_softc.pBeginRFA ); |
---|
2264 | |
---|
2265 | /* |
---|
2266 | * if we have just received the a frame in the last unknown RFD, |
---|
2267 | * then it is certain that the RFA is empty. |
---|
2268 | */ |
---|
2269 | if ( uti596_softc.pLastUnkRFD == uti596_softc.pBeginRFA ) { |
---|
2270 | UTI_596_ASSERT(uti596_softc.pLastUnkRFD != I596_NULL,"****ERROR:LastUnk is NULL, begin ptr @ end!\n") |
---|
2271 | uti596_softc.pEndRFA = uti596_softc.pLastUnkRFD = I596_NULL; |
---|
2272 | } |
---|
2273 | |
---|
2274 | #ifdef DBG_ISR |
---|
2275 | printk(("uti596_DynamicInterruptHandler: Wake %#x\n",uti596_softc.rxDaemonTid)) |
---|
2276 | #endif |
---|
2277 | sc = rtems_bsdnet_event_send(uti596_softc.rxDaemonTid, INTERRUPT_EVENT); |
---|
2278 | if ( sc != RTEMS_SUCCESSFUL ) { |
---|
2279 | rtems_panic("Can't notify rxDaemon: %s\n", |
---|
2280 | rtems_status_text (sc)); |
---|
2281 | } |
---|
2282 | #ifdef DBG_ISR |
---|
2283 | else { |
---|
2284 | printk(("uti596_DynamicInterruptHandler: Rx Wake: %#x\n",uti596_softc.rxDaemonTid)) |
---|
2285 | } |
---|
2286 | #endif |
---|
2287 | |
---|
2288 | uti596_softc.pBeginRFA = pIsrRfd; |
---|
2289 | } /* end while */ |
---|
2290 | } /* end if */ |
---|
2291 | |
---|
2292 | if ( uti596_softc.pBeginRFA == I596_NULL ) { |
---|
2293 | /* adjust the pEndRFA to reflect an empty list */ |
---|
2294 | if ( uti596_softc.pLastUnkRFD == I596_NULL && uti596_softc.countRFD != 0 ) { |
---|
2295 | printk(("Last Unk is NULL, BeginRFA is null, and count == %d\n", |
---|
2296 | uti596_softc.countRFD)) |
---|
2297 | } |
---|
2298 | uti596_softc.pEndRFA = I596_NULL; |
---|
2299 | if ( uti596_softc.countRFD != 0 ) { |
---|
2300 | printk(("****ERROR:Count is %d, but begin ptr is NULL\n", |
---|
2301 | uti596_softc.countRFD )) |
---|
2302 | } |
---|
2303 | } |
---|
2304 | } /* end if ( scbStatus & SCB_STAT_FR ) */ |
---|
2305 | |
---|
2306 | /* |
---|
2307 | * Command Unit Control |
---|
2308 | * a command is completed |
---|
2309 | */ |
---|
2310 | if ( scbStatus & SCB_STAT_CX ) { |
---|
2311 | #ifdef DBG_ISR |
---|
2312 | printk(("uti596_DynamicInterruptHandler: CU\n")) |
---|
2313 | #endif |
---|
2314 | |
---|
2315 | pIsrCmd = uti596_softc.pCmdHead; |
---|
2316 | |
---|
2317 | /* For ALL completed commands */ |
---|
2318 | if ( pIsrCmd != I596_NULL && pIsrCmd->status & STAT_C ) { |
---|
2319 | |
---|
2320 | #ifdef DBG_ISR |
---|
2321 | printk(("uti596_DynamicInterruptHandler: pIsrCmd != NULL\n")) |
---|
2322 | #endif |
---|
2323 | |
---|
2324 | /* Adjust the command block list */ |
---|
2325 | uti596_softc.pCmdHead = (i596_cmd *) word_swap ((unsigned long)pIsrCmd->next); |
---|
2326 | |
---|
2327 | /* |
---|
2328 | * If there are MORE commands to process, |
---|
2329 | * the serialization in the raw routine has failed. |
---|
2330 | * ( Perhaps AddCmd is bad? ) |
---|
2331 | */ |
---|
2332 | UTI_596_ASSERT(uti596_softc.pCmdHead == I596_NULL, "****ERROR: command serialization failed\n") |
---|
2333 | |
---|
2334 | /* What if the command did not complete OK? */ |
---|
2335 | switch ( pIsrCmd->command & 0x7) { |
---|
2336 | case CmdConfigure: |
---|
2337 | |
---|
2338 | uti596_softc.cmdOk = 1; |
---|
2339 | break; |
---|
2340 | |
---|
2341 | case CmdDump: |
---|
2342 | #ifdef DBG_ISR |
---|
2343 | printk(("uti596_DynamicInterruptHandler: dump!\n")) |
---|
2344 | #endif |
---|
2345 | uti596_softc.cmdOk = 1; |
---|
2346 | break; |
---|
2347 | |
---|
2348 | case CmdDiagnose: |
---|
2349 | #ifdef DBG_ISR |
---|
2350 | printk(("uti596_DynamicInterruptHandler: diagnose!\n")) |
---|
2351 | #endif |
---|
2352 | uti596_softc.cmdOk = 1; |
---|
2353 | break; |
---|
2354 | |
---|
2355 | case CmdSASetup: |
---|
2356 | /* printk(("****INFO:Set address interrupt\n")) */ |
---|
2357 | if ( pIsrCmd -> status & STAT_OK ) { |
---|
2358 | uti596_softc.cmdOk = 1; |
---|
2359 | } |
---|
2360 | else { |
---|
2361 | printk(("****ERROR:SET ADD FAILED\n")) |
---|
2362 | } |
---|
2363 | break; |
---|
2364 | |
---|
2365 | case CmdTx: |
---|
2366 | UTI_596_ASSERT(uti596_softc.txDaemonTid, "****ERROR:Null txDaemonTid\n") |
---|
2367 | #ifdef DBG_ISR |
---|
2368 | printk(("uti596_DynamicInterruptHandler: wake TX:0x%x\n",uti596_softc.txDaemonTid)) |
---|
2369 | #endif |
---|
2370 | if ( uti596_softc.txDaemonTid ) { |
---|
2371 | /* Ensure that the transmitter is present */ |
---|
2372 | sc = rtems_bsdnet_event_send (uti596_softc.txDaemonTid, |
---|
2373 | INTERRUPT_EVENT); |
---|
2374 | |
---|
2375 | if ( sc != RTEMS_SUCCESSFUL ) { |
---|
2376 | printk(("****ERROR:Could NOT send event to tid 0x%" PRIu32 " : %s\n", |
---|
2377 | uti596_softc.txDaemonTid, rtems_status_text (sc) )) |
---|
2378 | } |
---|
2379 | #ifdef DBG_ISR |
---|
2380 | else { |
---|
2381 | printk(("****INFO:Tx wake: %#x\n",uti596_softc.txDaemonTid)) |
---|
2382 | } |
---|
2383 | #endif |
---|
2384 | } |
---|
2385 | break; |
---|
2386 | |
---|
2387 | case CmdMulticastList: |
---|
2388 | printk(("***ERROR:Multicast?!\n")) |
---|
2389 | pIsrCmd->next = I596_NULL; |
---|
2390 | break; |
---|
2391 | |
---|
2392 | case CmdTDR: { |
---|
2393 | unsigned long status = *( (unsigned long *)pIsrCmd)+1; |
---|
2394 | printk(("****ERROR:TDR?!\n")) |
---|
2395 | |
---|
2396 | if (status & STAT_C) { |
---|
2397 | /* mark the TDR command successful */ |
---|
2398 | uti596_softc.cmdOk = 1; |
---|
2399 | } |
---|
2400 | else { |
---|
2401 | if (status & 0x4000) { |
---|
2402 | printk(("****WARNING:Transceiver problem.\n")) |
---|
2403 | } |
---|
2404 | if (status & 0x2000) { |
---|
2405 | printk(("****WARNING:Termination problem.\n")) |
---|
2406 | } |
---|
2407 | if (status & 0x1000) { |
---|
2408 | printk(("****WARNING:Short circuit.\n")) |
---|
2409 | /* printk(("****INFO:Time %ld.\n", status & 0x07ff)) */ |
---|
2410 | } |
---|
2411 | } |
---|
2412 | } |
---|
2413 | break; |
---|
2414 | |
---|
2415 | default: { |
---|
2416 | /* |
---|
2417 | * This should never be reached |
---|
2418 | */ |
---|
2419 | printk(("CX but NO known command\n")) |
---|
2420 | } |
---|
2421 | } /* end switch */ |
---|
2422 | |
---|
2423 | pIsrCmd = uti596_softc.pCmdHead; /* next command */ |
---|
2424 | if ( pIsrCmd != I596_NULL ) { |
---|
2425 | printk(("****WARNING: more commands in list, but no start to NIC\n")) |
---|
2426 | } |
---|
2427 | } /* end if pIsrCmd != NULL && pIsrCmd->stat & STAT_C */ |
---|
2428 | |
---|
2429 | else { |
---|
2430 | if ( pIsrCmd != I596_NULL ) { |
---|
2431 | /* The command MAY be NULL from a RESET */ |
---|
2432 | /* Reset the ethernet card, and wake the transmitter (if necessary) */ |
---|
2433 | printk(("****INFO: Request board reset ( tx )\n")) |
---|
2434 | uti596_softc.nic_reset = 1; |
---|
2435 | if ( uti596_softc.txDaemonTid) { |
---|
2436 | /* Ensure that a transmitter is present */ |
---|
2437 | sc = rtems_bsdnet_event_send (uti596_softc.txDaemonTid, |
---|
2438 | INTERRUPT_EVENT); |
---|
2439 | if ( sc != RTEMS_SUCCESSFUL ) { |
---|
2440 | printk(("****ERROR:Could NOT send event to tid 0x%" PRIu32 " : %s\n", |
---|
2441 | uti596_softc.txDaemonTid, rtems_status_text (sc) )) |
---|
2442 | } |
---|
2443 | #ifdef DBG_ISR |
---|
2444 | else { |
---|
2445 | printk(("uti596_DynamicInterruptHandler: ****INFO:Tx wake: %#x\n", |
---|
2446 | uti596_softc.txDaemonTid)) |
---|
2447 | } |
---|
2448 | #endif |
---|
2449 | } |
---|
2450 | } |
---|
2451 | } |
---|
2452 | } /* end if command complete */ |
---|
2453 | |
---|
2454 | /* |
---|
2455 | * If the receiver has stopped, |
---|
2456 | * check if this is a No Resources scenario, |
---|
2457 | * Try to add more RFD's ( no RBDs are used ) |
---|
2458 | */ |
---|
2459 | if ( uti596_softc.started ) { |
---|
2460 | if ( scbStatus & SCB_STAT_RNR ) { |
---|
2461 | #ifdef DBG_ISR |
---|
2462 | printk(("uti596_DynamicInterruptHandler: INFO:RNR: status %#x \n", |
---|
2463 | uti596_softc.scb.status )) |
---|
2464 | #endif |
---|
2465 | /* |
---|
2466 | * THE RECEIVER IS OFF! |
---|
2467 | */ |
---|
2468 | if ( uti596_softc.pLastUnkRFD != I596_NULL ) { |
---|
2469 | /* We have an unknown RFD, it is not inbound */ |
---|
2470 | if ( uti596_softc.pLastUnkRFD -> stat & (STAT_C | STAT_B )) { /* in use */ |
---|
2471 | uti596_softc.pEndRFA = uti596_softc.pLastUnkRFD; /* update end */ |
---|
2472 | } |
---|
2473 | else { |
---|
2474 | /* |
---|
2475 | * It is NOT in use, and since RNR, we know EL bit of pEndRFA was read! |
---|
2476 | * So, unlink it from the RFA and move it to the saved queue. |
---|
2477 | * But pBegin can equal LastUnk! |
---|
2478 | */ |
---|
2479 | |
---|
2480 | if ( uti596_softc.pEndRFA != I596_NULL ) { |
---|
2481 | /* check added feb24. */ |
---|
2482 | #ifdef DBG_ISR |
---|
2483 | if ((i596_rfd *)word_swap((unsigned long)uti596_softc.pEndRFA->next) != uti596_softc.pLastUnkRFD) { |
---|
2484 | printk(("***ERROR:UNK: %p not end->next: %p, end: %p\n", |
---|
2485 | uti596_softc.pLastUnkRFD, |
---|
2486 | uti596_softc.pEndRFA -> next, |
---|
2487 | uti596_softc.pEndRFA)) |
---|
2488 | printk(("***INFO:countRFD now %d\n", |
---|
2489 | uti596_softc.countRFD)) |
---|
2490 | printk(("\n\n")) |
---|
2491 | } |
---|
2492 | #endif |
---|
2493 | uti596_softc.pEndRFA -> next = I596_NULL; /* added feb 16 */ |
---|
2494 | } |
---|
2495 | uti596_append( (i596_rfd **)&uti596_softc.pSavedRfdQueue, uti596_softc.pLastUnkRFD ); |
---|
2496 | uti596_softc.savedCount++; |
---|
2497 | uti596_softc.pEndSavedQueue = uti596_softc.pLastUnkRFD; |
---|
2498 | uti596_softc.countRFD--; /* It was not in the RFA */ |
---|
2499 | /* |
---|
2500 | * The Begin pointer CAN advance this far. We must resynch the CPU side |
---|
2501 | * with the chip. |
---|
2502 | */ |
---|
2503 | if ( uti596_softc.pBeginRFA == uti596_softc.pLastUnkRFD ) { |
---|
2504 | #ifdef DBG_ISR |
---|
2505 | if ( uti596_softc.countRFD != 0 ) { |
---|
2506 | printk(("****INFO:About to set begin to NULL, with count == %d\n\n", |
---|
2507 | uti596_softc.countRFD )) |
---|
2508 | } |
---|
2509 | #endif |
---|
2510 | uti596_softc.pBeginRFA = I596_NULL; |
---|
2511 | UTI_596_ASSERT(uti596_softc.countRFD == 0, "****ERROR:Count must be zero here!\n") |
---|
2512 | } |
---|
2513 | } |
---|
2514 | uti596_softc.pLastUnkRFD = I596_NULL; |
---|
2515 | } /* end if exists UnkRFD */ |
---|
2516 | |
---|
2517 | /* |
---|
2518 | * Append the saved queue to the RFA. |
---|
2519 | * Any further RFD's being supplied will be added to |
---|
2520 | * this new list. |
---|
2521 | */ |
---|
2522 | if ( uti596_softc.pSavedRfdQueue != I596_NULL ) { |
---|
2523 | /* entries to add */ |
---|
2524 | if ( uti596_softc.pBeginRFA == I596_NULL ) { |
---|
2525 | /* add at beginning to list */ |
---|
2526 | #ifdef DBG_ISR |
---|
2527 | if(uti596_softc.countRFD != 0) { |
---|
2528 | printk(("****ERROR:Begin pointer is NULL, but count == %d\n", |
---|
2529 | uti596_softc.countRFD)) |
---|
2530 | } |
---|
2531 | #endif |
---|
2532 | uti596_softc.pBeginRFA = uti596_softc.pSavedRfdQueue; |
---|
2533 | uti596_softc.pEndRFA = uti596_softc.pEndSavedQueue; |
---|
2534 | uti596_softc.pSavedRfdQueue = uti596_softc.pEndSavedQueue = I596_NULL; /* Reset the End */ |
---|
2535 | } |
---|
2536 | else { |
---|
2537 | #ifdef DBG_ISR |
---|
2538 | if ( uti596_softc.countRFD <= 0) { |
---|
2539 | printk(("****ERROR:Begin pointer is not NULL, but count == %d\n", |
---|
2540 | uti596_softc.countRFD)) |
---|
2541 | } |
---|
2542 | #endif |
---|
2543 | UTI_596_ASSERT( uti596_softc.pEndRFA != I596_NULL, "****WARNING: END RFA IS NULL\n") |
---|
2544 | UTI_596_ASSERT( uti596_softc.pEndRFA->next == I596_NULL, "****ERROR:END RFA -> next must be NULL\n") |
---|
2545 | |
---|
2546 | uti596_softc.pEndRFA->next = (i596_rfd *)word_swap((unsigned long)uti596_softc.pSavedRfdQueue); |
---|
2547 | uti596_softc.pEndRFA->cmd &= ~CMD_EOL; /* clear the end of list */ |
---|
2548 | uti596_softc.pEndRFA = uti596_softc.pEndSavedQueue; |
---|
2549 | uti596_softc.pSavedRfdQueue = uti596_softc.pEndSavedQueue = I596_NULL; /* Reset the End */ |
---|
2550 | #ifdef DBG_ISR |
---|
2551 | printk(("uti596_DynamicInterruptHandler: count... %d, saved ... %d \n", |
---|
2552 | uti596_softc.countRFD, |
---|
2553 | uti596_softc.savedCount)) |
---|
2554 | #endif |
---|
2555 | } |
---|
2556 | /* printk(("Isr: countRFD = %d\n",uti596_softc.countRFD)) */ |
---|
2557 | uti596_softc.countRFD += uti596_softc.savedCount; |
---|
2558 | /* printk(("Isr: after countRFD = %d\n",uti596_softc.countRFD)) */ |
---|
2559 | uti596_softc.savedCount = 0; |
---|
2560 | } |
---|
2561 | |
---|
2562 | #ifdef DBG_ISR |
---|
2563 | printk(("uti596_DynamicInterruptHandler: The list starts here %p\n",uti596_softc.pBeginRFA )) |
---|
2564 | #endif |
---|
2565 | |
---|
2566 | if ( uti596_softc.countRFD > 1) { |
---|
2567 | printk(("****INFO: pBeginRFA -> stat = 0x%x\n",uti596_softc.pBeginRFA -> stat)) |
---|
2568 | printk(("****INFO: pBeginRFA -> cmd = 0x%x\n",uti596_softc.pBeginRFA -> cmd)) |
---|
2569 | uti596_softc.pBeginRFA -> stat = 0; |
---|
2570 | UTI_596_ASSERT(uti596_softc.scb.command == 0, "****ERROR:scb command must be zero\n") |
---|
2571 | uti596_softc.scb.pRfd = uti596_softc.pBeginRFA; |
---|
2572 | uti596_softc.scb.rfd_pointer = word_swap((unsigned long)uti596_softc.pBeginRFA); |
---|
2573 | /* start RX here */ |
---|
2574 | printk(("****INFO: ISR Starting receiver\n")) |
---|
2575 | uti596_softc.scb.command = RX_START; /* should this also be CU start? */ |
---|
2576 | i82596->chan_attn = 0x00000000; |
---|
2577 | } |
---|
2578 | } /* end stat_rnr */ |
---|
2579 | } /* end if receiver started */ |
---|
2580 | |
---|
2581 | #ifdef DBG_ISR |
---|
2582 | printk(("uti596_DynamicInterruptHandler: X\n")) |
---|
2583 | #endif |
---|
2584 | count_rx=0; |
---|
2585 | |
---|
2586 | /* Do this last, to ensure that the reset is called at the right time. */ |
---|
2587 | if ( uti596_softc.nic_reset ) { |
---|
2588 | uti596_softc.nic_reset = 0; |
---|
2589 | sc = rtems_bsdnet_event_send(uti596_softc.resetDaemonTid, NIC_RESET_EVENT); |
---|
2590 | if ( sc != RTEMS_SUCCESSFUL ) |
---|
2591 | rtems_panic ("Can't notify resetDaemon: %s\n", rtems_status_text (sc)); |
---|
2592 | } |
---|
2593 | return; |
---|
2594 | } |
---|
2595 | |
---|
2596 | /*********************************************************************** |
---|
2597 | * Function: uti596_ioctl |
---|
2598 | * |
---|
2599 | * Description: |
---|
2600 | * driver ioctl function |
---|
2601 | * handles SIOCGIFADDR, SIOCSIFADDR, SIOCSIFFLAGS |
---|
2602 | * |
---|
2603 | ***********************************************************************/ |
---|
2604 | |
---|
2605 | static int uti596_ioctl( |
---|
2606 | struct ifnet *ifp, |
---|
2607 | u_long command, |
---|
2608 | caddr_t data |
---|
2609 | ) |
---|
2610 | { |
---|
2611 | uti596_softc_ *sc = ifp->if_softc; |
---|
2612 | int error = 0; |
---|
2613 | |
---|
2614 | #ifdef DBG_IOCTL |
---|
2615 | printk(("uti596_ioctl: begins\n", sc->pScp)) |
---|
2616 | #endif |
---|
2617 | |
---|
2618 | switch (command) { |
---|
2619 | case SIOCGIFADDR: |
---|
2620 | case SIOCSIFADDR: |
---|
2621 | printk(("SIOCSIFADDR\n")) |
---|
2622 | ether_ioctl (ifp, command, data); |
---|
2623 | break; |
---|
2624 | |
---|
2625 | case SIOCSIFFLAGS: |
---|
2626 | printk(("SIOCSIFFLAGS\n")) |
---|
2627 | switch (ifp->if_flags & (IFF_UP | IFF_RUNNING)) { |
---|
2628 | case IFF_RUNNING: |
---|
2629 | printk(("IFF_RUNNING\n")) |
---|
2630 | uti596_stop (sc); |
---|
2631 | break; |
---|
2632 | |
---|
2633 | case IFF_UP: |
---|
2634 | printk(("IFF_UP\n")) |
---|
2635 | uti596_init ( (void *)sc); |
---|
2636 | break; |
---|
2637 | |
---|
2638 | case IFF_UP | IFF_RUNNING: |
---|
2639 | printk(("IFF_UP and RUNNING\n")) |
---|
2640 | uti596_stop (sc); |
---|
2641 | uti596_init ( (void *)sc); |
---|
2642 | break; |
---|
2643 | |
---|
2644 | default: |
---|
2645 | printk(("default\n")) |
---|
2646 | break; |
---|
2647 | } |
---|
2648 | break; |
---|
2649 | |
---|
2650 | case SIO_RTEMS_SHOW_STATS: |
---|
2651 | printk(("show stats\n")) |
---|
2652 | uti596_stats (sc); |
---|
2653 | break; |
---|
2654 | |
---|
2655 | /* FIXME: All sorts of multicast commands need to be added here! */ |
---|
2656 | default: |
---|
2657 | printk(("default: EINVAL\n")) |
---|
2658 | error = EINVAL; |
---|
2659 | break; |
---|
2660 | } |
---|
2661 | |
---|
2662 | return error; |
---|
2663 | } |
---|
2664 | |
---|
2665 | /*********************************************************************** |
---|
2666 | * Function: uti596_stats |
---|
2667 | * |
---|
2668 | * Description: |
---|
2669 | * print out the collected data |
---|
2670 | * |
---|
2671 | * Algorithm: |
---|
2672 | * use printf |
---|
2673 | * |
---|
2674 | ***********************************************************************/ |
---|
2675 | |
---|
2676 | void uti596_stats( |
---|
2677 | uti596_softc_ *sc |
---|
2678 | ) |
---|
2679 | { |
---|
2680 | printf ("CPU Reports:\n"); |
---|
2681 | printf (" Tx raw send count:%-8lu", sc->rawsndcnt); |
---|
2682 | printf (" Rx Interrupts:%-8lu", sc->rxInterrupts); |
---|
2683 | printf (" Tx Interrupts:%-8lu\n", sc->txInterrupts); |
---|
2684 | printf (" Rx Packets:%-8u", sc->stats.rx_packets); |
---|
2685 | printf (" Tx Attempts:%-u\n", sc->stats.tx_packets); |
---|
2686 | |
---|
2687 | printf (" Rx Dropped:%-8u", sc->stats.rx_dropped); |
---|
2688 | printf (" Rx IP Packets:%-8u", sc->stats.rx_packets); |
---|
2689 | printf (" Tx Errors:%-8u\n", sc->stats.tx_errors); |
---|
2690 | printf (" Tx aborted:%-8u", sc->stats.tx_aborted_errors); |
---|
2691 | printf (" Tx Dropped:%-8u\n", sc->stats.tx_dropped); |
---|
2692 | printf (" Tx IP packets:%-8u", sc->stats.tx_packets); |
---|
2693 | |
---|
2694 | printf (" Collisions Detected:%-8u\n", sc->stats.collisions); |
---|
2695 | printf (" Tx Heartbeat Errors:%-8u", sc->stats.tx_heartbeat_errors); |
---|
2696 | printf (" Tx Carrier Errors:%-8u\n", sc->stats.tx_carrier_errors); |
---|
2697 | printf (" Tx Aborted Errors:%-8u", sc->stats.tx_aborted_errors); |
---|
2698 | printf (" Rx Length Errors:%-8u\n", sc->stats.rx_length_errors); |
---|
2699 | printf (" Rx Overrun Errors:%-8u", sc->stats.rx_over_errors); |
---|
2700 | printf (" Rx Fifo Errors:%-8u\n", sc->stats.rx_fifo_errors); |
---|
2701 | printf (" Rx Framing Errors:%-8u", sc->stats.rx_frame_errors); |
---|
2702 | printf (" Rx crc errors:%-8u\n", sc->stats.rx_crc_errors); |
---|
2703 | |
---|
2704 | printf (" TX WAITS: %-8lu\n", sc->txRawWait); |
---|
2705 | |
---|
2706 | printf (" NIC resets: %-8u\n", sc->stats.nic_reset_count); |
---|
2707 | |
---|
2708 | printf (" NIC reports\n"); |
---|
2709 | |
---|
2710 | #ifdef DBG_STAT |
---|
2711 | uti596_dump_scb(); |
---|
2712 | #endif |
---|
2713 | } |
---|
2714 | |
---|
2715 | /************************ PACKET DEBUG ROUTINES ************************/ |
---|
2716 | |
---|
2717 | #ifdef DBG_PACKETS |
---|
2718 | |
---|
2719 | /* |
---|
2720 | * dumpQ |
---|
2721 | * |
---|
2722 | * Dumps frame queues for debugging |
---|
2723 | */ |
---|
2724 | static void dumpQ( void ) |
---|
2725 | { |
---|
2726 | i596_rfd *pRfd; |
---|
2727 | |
---|
2728 | printk(("savedQ:\n")) |
---|
2729 | |
---|
2730 | for( pRfd = uti596_softc.pSavedRfdQueue; |
---|
2731 | pRfd != I596_NULL; |
---|
2732 | pRfd = (i596_rfd*)word_swap((uint32_t)pRfd -> next)) { |
---|
2733 | printk(("pRfd: %p, stat: 0x%x cmd: 0x%x\n",pRfd,pRfd -> stat,pRfd -> cmd)) |
---|
2734 | } |
---|
2735 | |
---|
2736 | printk(("Inbound:\n")) |
---|
2737 | |
---|
2738 | for( pRfd = uti596_softc.pInboundFrameQueue; |
---|
2739 | pRfd != I596_NULL; |
---|
2740 | pRfd = (i596_rfd*)word_swap((uint32_t)pRfd -> next)) { |
---|
2741 | printk(("pRfd: %p, stat: 0x%x cmd: 0x%x\n",pRfd,pRfd -> stat,pRfd -> cmd)) |
---|
2742 | } |
---|
2743 | |
---|
2744 | printk(("Last Unk: %p\n", uti596_softc.pLastUnkRFD )) |
---|
2745 | printk(("RFA:\n")) |
---|
2746 | |
---|
2747 | for( pRfd = uti596_softc.pBeginRFA; |
---|
2748 | pRfd != I596_NULL; |
---|
2749 | pRfd = (i596_rfd*)word_swap((uint32_t)pRfd -> next)) { |
---|
2750 | printk(("pRfd: %p, stat: 0x%x cmd: 0x%x\n",pRfd,pRfd -> stat,pRfd -> cmd)) |
---|
2751 | } |
---|
2752 | } |
---|
2753 | |
---|
2754 | /* |
---|
2755 | * show_buffers |
---|
2756 | * |
---|
2757 | * Print out the RFA and frame queues |
---|
2758 | */ |
---|
2759 | static void show_buffers (void) |
---|
2760 | { |
---|
2761 | i596_rfd *pRfd; |
---|
2762 | |
---|
2763 | printk(("82596 cmd: 0x%x, status: 0x%x RFA len: %d\n", |
---|
2764 | uti596_softc.scb.command, |
---|
2765 | uti596_softc.scb.status, |
---|
2766 | uti596_softc.countRFD)) |
---|
2767 | |
---|
2768 | printk(("\nRFA: \n")) |
---|
2769 | |
---|
2770 | for ( pRfd = uti596_softc.pBeginRFA; |
---|
2771 | pRfd != I596_NULL; |
---|
2772 | pRfd = (i596_rfd *)word_swap((uint32_t)pRfd->next) ) { |
---|
2773 | printk(("Frame @ %p, status: %2.2x, cmd: %2.2x\n", |
---|
2774 | pRfd, pRfd->stat, pRfd->cmd)) |
---|
2775 | } |
---|
2776 | printk(("\nInbound: \n")) |
---|
2777 | |
---|
2778 | for ( pRfd = uti596_softc.pInboundFrameQueue; |
---|
2779 | pRfd != I596_NULL; |
---|
2780 | pRfd = (i596_rfd *)word_swap((uint32_t)pRfd->next) ) { |
---|
2781 | printk(("Frame @ %p, status: %2.2x, cmd: %2.2x\n", |
---|
2782 | pRfd, pRfd->stat, pRfd->cmd)) |
---|
2783 | } |
---|
2784 | |
---|
2785 | printk(("\nSaved: \n")) |
---|
2786 | |
---|
2787 | for ( pRfd = uti596_softc.pSavedRfdQueue; |
---|
2788 | pRfd != I596_NULL; |
---|
2789 | pRfd = (i596_rfd *)word_swap((uint32_t)pRfd->next) ) { |
---|
2790 | printk(("Frame @ %p, status: %2.2x, cmd: %2.2x\n", |
---|
2791 | pRfd, pRfd->stat, pRfd->cmd)) |
---|
2792 | } |
---|
2793 | |
---|
2794 | printk(("\nUnknown: %p\n",uti596_softc.pLastUnkRFD)) |
---|
2795 | } |
---|
2796 | |
---|
2797 | /* |
---|
2798 | * show_queues |
---|
2799 | * |
---|
2800 | * Print out the saved frame queue and the RFA |
---|
2801 | */ |
---|
2802 | static void show_queues(void) |
---|
2803 | { |
---|
2804 | i596_rfd *pRfd; |
---|
2805 | |
---|
2806 | printk(("CMD: 0x%x, Status: 0x%x\n", |
---|
2807 | uti596_softc.scb.command, |
---|
2808 | uti596_softc.scb.status)) |
---|
2809 | printk(("saved Q\n")) |
---|
2810 | |
---|
2811 | for ( pRfd = uti596_softc.pSavedRfdQueue; |
---|
2812 | pRfd != I596_NULL && |
---|
2813 | pRfd != NULL; |
---|
2814 | pRfd = (i596_rfd *)word_swap((uint32_t)pRfd->next) ) { |
---|
2815 | printk(("0x%p\n", pRfd)) |
---|
2816 | } |
---|
2817 | |
---|
2818 | printk(("End saved Q 0x%p\n", uti596_softc.pEndSavedQueue)) |
---|
2819 | |
---|
2820 | printk(("\nRFA:\n")) |
---|
2821 | |
---|
2822 | for ( pRfd = uti596_softc.pBeginRFA; |
---|
2823 | pRfd != I596_NULL && |
---|
2824 | pRfd != NULL; |
---|
2825 | pRfd = (i596_rfd *)word_swap((uint32_t)pRfd->next) ) { |
---|
2826 | printk(("0x%p\n", pRfd)) |
---|
2827 | } |
---|
2828 | |
---|
2829 | printk(("uti596_softc.pEndRFA: %p\n",uti596_softc.pEndRFA)) |
---|
2830 | } |
---|
2831 | |
---|
2832 | /* |
---|
2833 | * print_eth |
---|
2834 | * |
---|
2835 | * Print the contents of an ethernet packet |
---|
2836 | * CANNOT BE CALLED FROM ISR |
---|
2837 | */ |
---|
2838 | static void print_eth( |
---|
2839 | unsigned char *add |
---|
2840 | ) |
---|
2841 | { |
---|
2842 | int i; |
---|
2843 | short int length; |
---|
2844 | |
---|
2845 | printk (("Packet Location %p\n", add)) |
---|
2846 | printk (("Dest ")) |
---|
2847 | |
---|
2848 | for (i = 0; i < 6; i++) { |
---|
2849 | printk ((" %2.2X", add[i])) |
---|
2850 | } |
---|
2851 | printk (("\n")) |
---|
2852 | printk (("Source")) |
---|
2853 | |
---|
2854 | for (i = 6; i < 12; i++) { |
---|
2855 | printk ((" %2.2X", add[i])) |
---|
2856 | } |
---|
2857 | |
---|
2858 | printk (("\n")) |
---|
2859 | printk (("frame type %2.2X%2.2X\n", add[12], add[13])) |
---|
2860 | |
---|
2861 | if ( add[12] == 0x08 && add[13] == 0x06 ) { |
---|
2862 | /* an ARP */ |
---|
2863 | printk (("Hardware type : %2.2X%2.2X\n", add[14],add[15])) |
---|
2864 | printk (("Protocol type : %2.2X%2.2X\n", add[16],add[17])) |
---|
2865 | printk (("Hardware size : %2.2X\n", add[18])) |
---|
2866 | printk (("Protocol size : %2.2X\n", add[19])) |
---|
2867 | printk (("op : %2.2X%2.2X\n", add[20],add[21])) |
---|
2868 | printk (("Sender Enet addr: ")) |
---|
2869 | |
---|
2870 | for ( i=0; i< 5 ; i++) { |
---|
2871 | printk (("%x:", add[22 + i])) |
---|
2872 | } |
---|
2873 | printk (("%x\n", add[27])) |
---|
2874 | printk (("Sender IP addr: ")) |
---|
2875 | |
---|
2876 | for ( i=0; i< 3 ; i++) { |
---|
2877 | printk (("%u.", add[28 + i])) |
---|
2878 | } |
---|
2879 | printk (("%u\n", add[31])) |
---|
2880 | printk (("Target Enet addr: ")) |
---|
2881 | |
---|
2882 | for ( i=0; i< 5 ; i++) { |
---|
2883 | printk (( "%x:", add[32 + i])) |
---|
2884 | } |
---|
2885 | printk (("%x\n", add[37])) |
---|
2886 | printk (("Target IP addr: ")) |
---|
2887 | |
---|
2888 | for ( i=0; i< 3 ; i++) { |
---|
2889 | printk (( "%u.", add[38 + i])) |
---|
2890 | } |
---|
2891 | printk (("%u\n", add[41])) |
---|
2892 | } |
---|
2893 | |
---|
2894 | if ( add[12] == 0x08 && add[13] == 0x00 ) { |
---|
2895 | /* an IP packet */ |
---|
2896 | printk (("*********************IP HEADER******************\n")) |
---|
2897 | printk (("IP version/IPhdr length: %2.2X TOS: %2.2X\n", add[14] , add[15])) |
---|
2898 | printk (("IP total length: %2.2X %2.2X, decimal %d\n", add[16], add[17], length = (add[16]<<8 | add[17] ))) |
---|
2899 | printk (("IP identification: %2.2X %2.2X, 3-bit flags and offset %2.2X %2.2X\n", |
---|
2900 | add[18],add[19], add[20], add[21])) |
---|
2901 | printk (("IP TTL: %2.2X, protocol: %2.2X, checksum: %2.2X %2.2X \n", |
---|
2902 | add[22],add[23],add[24],add[25])) |
---|
2903 | printk (("IP packet type: %2.2X code %2.2X\n", add[34],add[35])) |
---|
2904 | printk (("Source IP address: ")) |
---|
2905 | |
---|
2906 | for ( i=0; i< 3 ; i++) { |
---|
2907 | printk (("%u.", add[26 + i])) |
---|
2908 | } |
---|
2909 | printk (("%u\n", add[29])) |
---|
2910 | printk (("Destination IP address: ")) |
---|
2911 | |
---|
2912 | for ( i=0; i< 3 ; i++) { |
---|
2913 | printk (("%u.", add[30 + i])) |
---|
2914 | } |
---|
2915 | printk (("%u\n", add[33])) |
---|
2916 | } |
---|
2917 | } |
---|
2918 | |
---|
2919 | /* |
---|
2920 | * print_hdr |
---|
2921 | * |
---|
2922 | * Print the contents of an ethernet packet header |
---|
2923 | * CANNOT BE CALLED FROM ISR |
---|
2924 | */ |
---|
2925 | static void print_hdr( |
---|
2926 | unsigned char *add |
---|
2927 | ) |
---|
2928 | { |
---|
2929 | int i; |
---|
2930 | |
---|
2931 | printk (("print_hdr: begins\n")) |
---|
2932 | printk (("Header Location %p\n", add)) |
---|
2933 | printk (("Dest ")) |
---|
2934 | |
---|
2935 | for (i = 0; i < 6; i++) { |
---|
2936 | printk ((" %2.2X", add[i])) |
---|
2937 | } |
---|
2938 | printk (("\nSource")) |
---|
2939 | |
---|
2940 | for (i = 6; i < 12; i++) { |
---|
2941 | printk ((" %2.2X", add[i])) |
---|
2942 | } |
---|
2943 | printk (("\nframe type %2.2X%2.2X\n", add[12], add[13])) |
---|
2944 | printk (("print_hdr: completed")) |
---|
2945 | } |
---|
2946 | |
---|
2947 | /* |
---|
2948 | * Function: print_pkt |
---|
2949 | * |
---|
2950 | * Print the contents of an ethernet packet & data |
---|
2951 | * CANNOT BE CALLED FROM ISR |
---|
2952 | */ |
---|
2953 | static void print_pkt( |
---|
2954 | unsigned char *add |
---|
2955 | ) |
---|
2956 | { |
---|
2957 | int i; |
---|
2958 | short int length; |
---|
2959 | |
---|
2960 | printk (("print_pkt: begins")) |
---|
2961 | printk (("Data Location %p\n", add)) |
---|
2962 | |
---|
2963 | if ( add[0] == 0x08 && add[1] == 0x06 ) { |
---|
2964 | /* an ARP */ |
---|
2965 | printk (("Hardware type : %2.2X%2.2X\n", add[14],add[15])) |
---|
2966 | printk (("Protocol type : %2.2X%2.2X\n", add[16],add[17])) |
---|
2967 | printk (("Hardware size : %2.2X\n", add[18])) |
---|
2968 | printk (("Protocol size : %2.2X\n", add[19])) |
---|
2969 | printk (("op : %2.2X%2.2X\n", add[20],add[21])) |
---|
2970 | printk (("Sender Enet addr: ")) |
---|
2971 | |
---|
2972 | for ( i=0; i< 5 ; i++) { |
---|
2973 | printk (( "%x:", add[22 + i])) |
---|
2974 | } |
---|
2975 | printk (("%x\n", add[27])) |
---|
2976 | printk (("Sender IP addr: ")) |
---|
2977 | |
---|
2978 | for ( i=0; i< 3 ; i++) { |
---|
2979 | printk (("%u.", add[28 + i])) |
---|
2980 | } |
---|
2981 | printk (("%u\n", add[31])) |
---|
2982 | printk (("Target Enet addr: ")) |
---|
2983 | |
---|
2984 | for ( i=0; i< 5 ; i++) { |
---|
2985 | printk (( "%x:", add[32 + i])) |
---|
2986 | } |
---|
2987 | printk (("%x\n", add[37])) |
---|
2988 | printk (("Target IP addr: ")) |
---|
2989 | |
---|
2990 | for ( i=0; i< 3 ; i++) { |
---|
2991 | printk (( "%u.", add[38 + i])) |
---|
2992 | } |
---|
2993 | printk (("%u\n", add[41])) |
---|
2994 | } |
---|
2995 | |
---|
2996 | if ( add[0] == 0x08 && add[1] == 0x00 ) { |
---|
2997 | /* an IP packet */ |
---|
2998 | printk (("*********************IP HEADER******************\n")) |
---|
2999 | printk (("IP version/IPhdr length: %2.2X TOS: %2.2X\n", add[14] , add[15])) |
---|
3000 | printk (("IP total length: %2.2X %2.2X, decimal %d\n", add[16], add[17], length = (add[16]<<8 | add[17] ))) |
---|
3001 | printk (("IP identification: %2.2X %2.2X, 3-bit flags and offset %2.2X %2.2X\n", |
---|
3002 | add[18],add[19], add[20], add[21])) |
---|
3003 | printk (("IP TTL: %2.2X, protocol: %2.2X, checksum: %2.2X %2.2X \n", |
---|
3004 | add[22],add[23],add[24],add[25])) |
---|
3005 | printk (("IP packet type: %2.2X code %2.2X\n", add[34],add[35])) |
---|
3006 | printk (("Source IP address: ")) |
---|
3007 | |
---|
3008 | for ( i=0; i< 3 ; i++) { |
---|
3009 | printk(( "%u.", add[26 + i])) |
---|
3010 | } |
---|
3011 | printk(("%u\n", add[29])) |
---|
3012 | printk(("Destination IP address: ")) |
---|
3013 | |
---|
3014 | for ( i=0; i< 3 ; i++) { |
---|
3015 | printk(( "%u.", add[30 + i])) |
---|
3016 | } |
---|
3017 | printk(("%u\n", add[33])) |
---|
3018 | printk(("********************IP Packet Data*******************\n")) |
---|
3019 | length -=20; |
---|
3020 | |
---|
3021 | for ( i=0; i < length ; i++) { |
---|
3022 | printk(("0x%2.2x ", add[34+i])) |
---|
3023 | } |
---|
3024 | printk(("\n")) |
---|
3025 | printk(("ICMP checksum: %2.2x %2.2x\n", add[36], add[37])) |
---|
3026 | printk(("ICMP identifier: %2.2x %2.2x\n", add[38], add[39])) |
---|
3027 | printk(("ICMP sequence nbr: %2.2x %2.2x\n", add[40], add[41])) |
---|
3028 | printk(("print_pkt: completed")) |
---|
3029 | } |
---|
3030 | } |
---|
3031 | |
---|
3032 | /* |
---|
3033 | * print_echo |
---|
3034 | * |
---|
3035 | * Print the contents of an echo packet |
---|
3036 | * CANNOT BE CALLED FROM ISR |
---|
3037 | */ |
---|
3038 | static void print_echo( |
---|
3039 | unsigned char *add |
---|
3040 | ) |
---|
3041 | { |
---|
3042 | int i; |
---|
3043 | short int length; |
---|
3044 | |
---|
3045 | printk (("print_echo: begins")) |
---|
3046 | |
---|
3047 | if ( add[12] == 0x08 && add[13] == 0x00 ) { |
---|
3048 | /* an IP packet */ |
---|
3049 | printk (("Packet Location %p\n", add)) |
---|
3050 | printk (("Dest ")) |
---|
3051 | |
---|
3052 | for (i = 0; i < 6; i++) { |
---|
3053 | printk ((" %2.2X", add[i])) |
---|
3054 | } |
---|
3055 | printk (("\n")) |
---|
3056 | printk (("Source")) |
---|
3057 | |
---|
3058 | for (i = 6; i < 12; i++) { |
---|
3059 | printk ((" %2.2X", add[i])) |
---|
3060 | } |
---|
3061 | printk (("\n")) |
---|
3062 | printk (("frame type %2.2X%2.2X\n", add[12], add[13])) |
---|
3063 | |
---|
3064 | printk (("*********************IP HEADER******************\n")) |
---|
3065 | printk (("IP version/IPhdr length: %2.2X TOS: %2.2X\n", add[14] , add[15])) |
---|
3066 | printk (("IP total length: %2.2X %2.2X, decimal %d\n", add[16], add[17], length = (add[16]<<8 | add[17] ))) |
---|
3067 | printk (("IP identification: %2.2X %2.2X, 3-bit flags and offset %2.2X %2.2X\n", |
---|
3068 | add[18],add[19], add[20], add[21])) |
---|
3069 | printk (("IP TTL: %2.2X, protocol: %2.2X, checksum: %2.2X %2.2X \n", |
---|
3070 | add[22],add[23],add[24],add[25])) |
---|
3071 | printk (("IP packet type: %2.2X code %2.2X\n", add[34],add[35])) |
---|
3072 | printk (("Source IP address: ")) |
---|
3073 | |
---|
3074 | for ( i=0; i< 3 ; i++) { |
---|
3075 | printk (("%u.", add[26 + i])) |
---|
3076 | } |
---|
3077 | printk (("%u\n", add[29])) |
---|
3078 | printk (("Destination IP address: ")) |
---|
3079 | |
---|
3080 | for ( i=0; i< 3 ; i++) { |
---|
3081 | printk (("%u.", add[30 + i])) |
---|
3082 | } |
---|
3083 | printk (("%u\n", add[33])) |
---|
3084 | printk(("********************IP Packet Data*******************\n")) |
---|
3085 | length -=20; |
---|
3086 | |
---|
3087 | for ( i=0; i < length ; i++) { |
---|
3088 | printk(("0x%2.2x ", add[34+i])) |
---|
3089 | } |
---|
3090 | printk(("\n")) |
---|
3091 | printk(("ICMP checksum: %2.2x %2.2x\n", add[36], add[37])) |
---|
3092 | printk(("ICMP identifier: %2.2x %2.2x\n", add[38], add[39])) |
---|
3093 | printk(("ICMP sequence nbr: %2.2x %2.2x\n", add[40], add[41])) |
---|
3094 | printk(("print_echo: completed")) |
---|
3095 | } |
---|
3096 | } |
---|
3097 | |
---|
3098 | #endif |
---|