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annotate packages/redboot/current/src/net/net_io.c @ 128:0c2b7be0d798 ecos-sw-2000-10-12

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Merge from eCos master repository on 2000-10-12-08:46:24-BST
author jlarmour
date Thu, 12 Oct 2000 20:31:43 +0000
parents bd1a71e3e476
children 0ae0bc38e387
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1 //==========================================================================
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2 //
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3 // net/net_io.c
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4 //
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5 // Stand-alone network logical I/O support for RedBoot
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6 //
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7 //==========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //==========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): gthomas
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35 // Contributors: gthomas
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36 // Date: 2000-07-14
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37 // Purpose:
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38 // Description:
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39 //
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40 // This code is part of RedBoot (tm).
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41 //
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42 //####DESCRIPTIONEND####
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43 //
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44 //==========================================================================
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45
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46 #include <redboot.h>
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47 #include <net/net.h>
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48 #include <cyg/hal/hal_misc.h> // Helper functions
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49 #include <cyg/hal/hal_if.h> // HAL I/O interfaces
117
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50 #include <cyg/hal/drv_api.h>
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51 #include <cyg/hal/hal_intr.h>
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52
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53 #ifdef CYGSEM_REDBOOT_FLASH_CONFIG
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54 #include <flash_config.h>
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55
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56 RedBoot_config_option("GDB connection port",
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57 gdb_port,
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58 ALWAYS_ENABLED, true,
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59 CONFIG_INT
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60 );
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61 RedBoot_config_option("Network debug at boot time",
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62 net_debug,
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63 ALWAYS_ENABLED, true,
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64 CONFIG_BOOL
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65 );
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66 // Note: the following options are related. If 'bootp' is false, then
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67 // the other values are used in the configuration. Because of the way
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68 // that configuration tables are generated, they should have names which
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69 // are related. The configuration options will show up lexicographically
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70 // ordered, thus the peculiar naming. In this case, the 'use' option is
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71 // negated (if false, the others apply) which makes the names even more
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72 // confusing.
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73 RedBoot_config_option("Use BOOTP for network configuration",
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74 bootp,
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75 ALWAYS_ENABLED, true,
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76 CONFIG_BOOL
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77 );
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78 RedBoot_config_option("Local IP address",
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79 bootp_my_ip,
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80 "bootp", false,
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81 CONFIG_IP
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82 );
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83 RedBoot_config_option("Default server IP address",
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84 bootp_server_ip,
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85 "bootp", false,
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86 CONFIG_IP
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87 );
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88 #endif
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89
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90 #define TCP_CHANNEL CYGNUM_HAL_VIRTUAL_VECTOR_COMM_CHANNELS
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91
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92 #ifdef DEBUG_TCP
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93 int show_tcp = 0;
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94 #endif
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95
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96 static tcp_socket_t tcp_sock;
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97 static int state;
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98 static int _timeout = 500;
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99 static int orig_console, orig_debug;
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100
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101 static int in_buflen = 0;
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102 static unsigned char in_buf[128];
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103 static unsigned char *in_bufp;
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104 static int out_buflen = 0;
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105 static unsigned char out_buf[256];
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106 static unsigned char *out_bufp;
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107
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108 // Functions in this module
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109 static void net_io_flush(void);
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110 static void net_io_revert_console(void);
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111
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112 static cyg_bool
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113 net_io_getc_nonblock(void* __ch_data, cyg_uint8* ch)
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114 {
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115 if (in_buflen == 0) {
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116 __tcp_poll();
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117 if (tcp_sock.state == _CLOSE_WAIT) {
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118 // This connection is breaking
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119 if (tcp_sock.data_bytes == 0) {
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120 __tcp_close(&tcp_sock);
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121 }
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122 return false;
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123 }
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124 if (tcp_sock.state == _CLOSED) {
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125 // The connection is gone
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126 net_io_revert_console();
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127 *ch = '\n';
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128 return true;
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129 }
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130 in_buflen = __tcp_read(&tcp_sock, in_buf, sizeof(in_buf));
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131 in_bufp = in_buf;
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132 #ifdef DEBUG_TCP
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133 if (show_tcp && (in_buflen > 0)) {
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134 int old_console;
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135 old_console = start_console();
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136 printf("%s:%d\n", __FUNCTION__, __LINE__);
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137 dump_buf(in_buf, in_buflen);
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138 end_console(old_console);
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139 }
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140 #endif // DEBUG_TCP
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141 }
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142 if (in_buflen) {
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143 *ch = *in_bufp++;
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144 in_buflen--;
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145 return true;
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146 } else {
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147 return false;
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148 }
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149 }
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150
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151 static cyg_uint8
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152 net_io_getc(void* __ch_data)
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153 {
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154 cyg_uint8 ch;
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155 int idle_timeout = 100; // 10ms
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156
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157 CYGARC_HAL_SAVE_GP();
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158 while (true) {
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159 if (net_io_getc_nonblock(__ch_data, &ch)) break;
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160 if (--idle_timeout == 0) {
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161 net_io_flush();
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162 idle_timeout = 100;
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163 } else {
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164 CYGACC_CALL_IF_DELAY_US(100);
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165 }
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166 }
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167 CYGARC_HAL_RESTORE_GP();
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168 return ch;
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169 }
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170
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171 static void
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172 net_io_flush(void)
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173 {
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174 int n;
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175 char *bp = out_buf;
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176
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177 while (out_buflen) {
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178 if (tcp_sock.state == _CLOSE_WAIT) {
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179 // This connection is tring to close
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180 __tcp_close(&tcp_sock);
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181 }
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182 if (tcp_sock.state == _CLOSED) {
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183 // The connection is gone!
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184 net_io_revert_console();
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185 break;
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186 }
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187 #ifdef DEBUG_TCP
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188 if (show_tcp) {
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189 int old_console;
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190 old_console = start_console();
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191 printf("%s.%d\n", __FUNCTION__, __LINE__);
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192 dump_buf(out_buf, out_buflen);
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193 end_console(old_console);
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194 }
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195 #endif // SHOW_TCP
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196 n = __tcp_write(&tcp_sock, bp, out_buflen);
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197 if (n > 0) {
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198 out_buflen -= n;
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199 bp += n;
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200 }
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201 __tcp_poll();
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202 }
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203 out_bufp = out_buf; out_buflen = 0;
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204 // Check interrupt flag
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205 if (CYGACC_CALL_IF_CONSOLE_INTERRUPT_FLAG()) {
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206 cyg_hal_user_break(0);
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207 CYGACC_CALL_IF_CONSOLE_INTERRUPT_FLAG_SET(0);
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208 }
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209 }
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210
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211 static void
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212 net_io_putc(void* __ch_data, cyg_uint8 c)
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213 {
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214 static bool have_dollar, have_hash;
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215 static int hash_count;
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216
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217 *out_bufp++ = c;
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218 if (c == '$') have_dollar = true;
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219 if (have_dollar && (c == '#')) {
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220 have_hash = true;
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221 hash_count = 0;
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222 }
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223 if ((++out_buflen == sizeof(out_buf)) ||
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224 (have_hash && (++hash_count == 3))) {
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225 net_io_flush();
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226 have_dollar = false;
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227 }
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228 }
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229
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230 static void
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231 net_io_write(void* __ch_data, const cyg_uint8* __buf, cyg_uint32 __len)
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232 {
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233 int old_console;
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234
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235 old_console = start_console();
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236 printf("%s.%d\n", __FUNCTION__, __LINE__);
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237 end_console(old_console);
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238 #if 0
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239 CYGARC_HAL_SAVE_GP();
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240
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241 while(__len-- > 0)
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242 net_io_putc(__ch_data, *__buf++);
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243
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244 CYGARC_HAL_RESTORE_GP();
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245 #endif
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246 }
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247
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248 static void
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249 net_io_read(void* __ch_data, cyg_uint8* __buf, cyg_uint32 __len)
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250 {
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251 int old_console;
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252
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253 old_console = start_console();
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254 printf("%s.%d\n", __FUNCTION__, __LINE__);
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255 end_console(old_console);
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256 #if 0
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257 CYGARC_HAL_SAVE_GP();
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258
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259 while(__len-- > 0)
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260 *__buf++ = net_io_getc(__ch_data);
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261
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262 CYGARC_HAL_RESTORE_GP();
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263 #endif
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264 }
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265
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266 static cyg_bool
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267 net_io_getc_timeout(void* __ch_data, cyg_uint8* ch)
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268 {
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269 int delay_count;
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270 cyg_bool res;
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271 CYGARC_HAL_SAVE_GP();
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272
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273 net_io_flush(); // Make sure any output has been sent
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274 delay_count = _timeout * 10; // delay in .1 ms steps
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275
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276 for(;;) {
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277 res = net_io_getc_nonblock(__ch_data, ch);
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278 if (res || 0 == delay_count--)
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279 break;
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280 CYGACC_CALL_IF_DELAY_US(100);
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281 }
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282
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283 CYGARC_HAL_RESTORE_GP();
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284 return res;
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285 }
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286
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287 static int
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288 net_io_control(void *__ch_data, __comm_control_cmd_t __func, ...)
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289 {
117
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290 static int vector = 0;
115
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291 int ret = 0;
117
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292 static int irq_state = 0;
115
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293
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294 CYGARC_HAL_SAVE_GP();
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295
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296 switch (__func) {
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297 case __COMMCTL_IRQ_ENABLE:
117
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298 irq_state = 1;
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299 if (vector == 0) {
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300 vector = eth_drv_int_vector();
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301 }
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302 HAL_INTERRUPT_UNMASK(vector);
115
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303 break;
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304 case __COMMCTL_IRQ_DISABLE:
117
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305 ret = irq_state;
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306 irq_state = 0;
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307 HAL_INTERRUPT_MASK(vector);
115
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308 break;
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309 case __COMMCTL_DBG_ISR_VECTOR:
117
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310 ret = vector;
115
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311 break;
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312 case __COMMCTL_SET_TIMEOUT:
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313 {
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314 va_list ap;
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315
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316 va_start(ap, __func);
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317
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318 ret = _timeout;
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319 _timeout = va_arg(ap, cyg_uint32);
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320
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321 va_end(ap);
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322 }
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323 default:
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324 break;
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325 }
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326 CYGARC_HAL_RESTORE_GP();
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327 return ret;
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328 }
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329
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330 static int
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331 net_io_isr(void *__ch_data, int* __ctrlc,
117
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332 CYG_ADDRWORD __vector, CYG_ADDRWORD __data)
115
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333 {
117
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334 char ch;
115
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335
117
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336 cyg_drv_interrupt_acknowledge(__vector);
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337 *__ctrlc = 0;
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338 if (net_io_getc_nonblock(__ch_data, &ch)) {
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339 if (ch == 0x03) {
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340 *__ctrlc = 1;
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341 }
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342 }
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343 return CYG_ISR_HANDLED;
115
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344 }
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345
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346 // TEMP
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347
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348 int
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349 start_console(void)
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350 {
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351 int cur_console;
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352 cur_console = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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353 CYGACC_CALL_IF_SET_CONSOLE_COMM(0);
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354 return cur_console;
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355 }
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356
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357 void
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358 end_console(int old_console)
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359 {
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360 // Restore original console
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361 CYGACC_CALL_IF_SET_CONSOLE_COMM(old_console);
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362 }
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363 // TEMP
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364
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365 static void
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366 net_io_revert_console(void)
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367 {
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368 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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369 console_selected = false;
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370 #endif
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371 CYGACC_CALL_IF_SET_CONSOLE_COMM(orig_console);
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372 CYGACC_CALL_IF_SET_DEBUG_COMM(orig_debug);
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373 console_echo = true;
115
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374 }
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375
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376 static void
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377 net_io_assume_console(void)
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378 {
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379 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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380 console_selected = true;
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381 #endif
128
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382 console_echo = false;
115
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383 orig_console = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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384 CYGACC_CALL_IF_SET_CONSOLE_COMM(TCP_CHANNEL);
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385 orig_debug = CYGACC_CALL_IF_SET_DEBUG_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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386 CYGACC_CALL_IF_SET_DEBUG_COMM(TCP_CHANNEL);
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387 }
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388
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389 static void
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390 net_io_init(void)
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391 {
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392 static int init = 0;
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393 if (!init) {
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394 hal_virtual_comm_table_t* comm;
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395 int cur = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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396
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397 // Setup procs in the vector table
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398 CYGACC_CALL_IF_SET_CONSOLE_COMM(TCP_CHANNEL);
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399 comm = CYGACC_CALL_IF_CONSOLE_PROCS();
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400 //CYGACC_COMM_IF_CH_DATA_SET(*comm, chan);
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401 CYGACC_COMM_IF_WRITE_SET(*comm, net_io_write);
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402 CYGACC_COMM_IF_READ_SET(*comm, net_io_read);
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403 CYGACC_COMM_IF_PUTC_SET(*comm, net_io_putc);
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404 CYGACC_COMM_IF_GETC_SET(*comm, net_io_getc);
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405 CYGACC_COMM_IF_CONTROL_SET(*comm, net_io_control);
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406 CYGACC_COMM_IF_DBG_ISR_SET(*comm, net_io_isr);
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407 CYGACC_COMM_IF_GETC_TIMEOUT_SET(*comm, net_io_getc_timeout);
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408
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409 // Restore original console
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410 CYGACC_CALL_IF_SET_CONSOLE_COMM(cur);
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411
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412 init = 1;
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413 }
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414 __tcp_listen(&tcp_sock, gdb_port);
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415 state = tcp_sock.state;
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416 #ifdef DEBUG_TCP
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417 printf("show tcp = %p\n", (void *)&show_tcp);
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418 #endif
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419 }
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420
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421 void
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422 net_io_test(void)
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423 {
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424 __tcp_poll();
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425 if (state != tcp_sock.state) {
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426 // Something has changed
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427 if (tcp_sock.state == _ESTABLISHED) {
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428 // A new connection has arrived
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429 net_io_assume_console();
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430 in_bufp = in_buf; in_buflen = 1; *in_bufp = '\r';
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431 out_bufp = out_buf; out_buflen = 0;
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432 }
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433 if (tcp_sock.state == _CLOSED) {
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434 net_io_init(); // Get ready for another connection
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435 }
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436 }
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437 state = tcp_sock.state;
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438 }
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439
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440 //
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441 // Network initialization
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442 //
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443 #include <eth_drv.h>
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444 #include <netdev.h>
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445 #include <cyg/hal/hal_tables.h>
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446
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447 // Define table boundaries
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448 CYG_HAL_TABLE_BEGIN( __NETDEVTAB__, netdev );
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449 CYG_HAL_TABLE_END( __NETDEVTAB_END__, netdev );
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450
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451 RedBoot_init(net_init, RedBoot_INIT_LAST);
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452
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453 void
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454 net_init(void)
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455 {
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456 cyg_netdevtab_entry_t *t;
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457
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458 if (!config_ok) {
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459 // Set defaults as appropriate
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460 use_bootp = true;
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461 net_debug = false;
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462 gdb_port = CYGNUM_REDBOOT_NETWORKING_TCP_PORT;
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463 #ifdef CYGSEM_REDBOOT_FLASH_CONFIG
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464 } else {
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465 flash_get_config("net_debug", &net_debug, CONFIG_BOOL);
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466 flash_get_config("gdb_port", &gdb_port, CONFIG_INT);
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467 flash_get_config("bootp", &use_bootp, CONFIG_BOOL);
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468 flash_get_config("bootp_my_ip", &__local_ip_addr, CONFIG_IP);
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469 flash_get_config("bootp_server_ip", &my_bootp_info.bp_siaddr, CONFIG_IP);
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470 #endif
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471 }
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472 have_net = false;
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473 // Make sure the recv buffers are set up
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474 eth_drv_buffers_init();
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475 __pktbuf_init();
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476 // Initialize all network devices
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477 for (t = &__NETDEVTAB__[0]; t != &__NETDEVTAB_END__; t++) {
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478 if (t->init(t)) {
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479 t->status = CYG_NETDEVTAB_STATUS_AVAIL;
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480 } else {
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481 // What to do if device init fails?
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482 t->status = 0; // Device not [currently] available
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483 }
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484 }
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485 if (!__local_enet_sc) {
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486 printf("No network interfaces found\n");
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487 return;
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488 }
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489 // Initialize the network [if present]
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490 if (use_bootp) {
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491 if (__bootp_find_local_ip(&my_bootp_info) == 0) {
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492 have_net = true;
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493 } else {
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494 printf("Can't get BOOTP info - network disabled!\n");
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495 }
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496 } else {
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497 have_net = true; // Assume values in FLASH were OK
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498 }
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499 if (have_net) {
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500 printf("IP: %s", inet_ntoa((in_addr_t *)&__local_ip_addr));
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501 printf(", Default server: %s\n", inet_ntoa(&my_bootp_info.bp_siaddr));
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502 net_io_init();
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503 }
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504 }