Mercurial > flash_v2

annotate packages/redboot/current/src/net/net_io.c @ 115:6ed91473a1cd ecos-sw-2000-08-21

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