net/eth.c

   1 /*
   2  * (C) Copyright 2001-2004
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include <command.h>
  26 #include <net.h>
  27
  28 #if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI)
  29
  30 #ifdef CFG_GT_6426x
  31 extern int gt6426x_eth_initialize(bd_t *bis);
  32 #endif
  33
  34 extern int au1x00_enet_initialize(bd_t*);
  35 extern int dc21x4x_initialize(bd_t*);
  36 extern int e1000_initialize(bd_t*);
  37 extern int eepro100_initialize(bd_t*);
  38 extern int eth_3com_initialize(bd_t*);
  39 extern int fec_initialize(bd_t*);
  40 extern int inca_switch_initialize(bd_t*);
  41 extern int mpc5xxx_fec_initialize(bd_t*);
  42 extern int mv6436x_eth_initialize(bd_t *);
  43 extern int mv6446x_eth_initialize(bd_t *);
  44 extern int natsemi_initialize(bd_t*);
  45 extern int ns8382x_initialize(bd_t*);
  46 extern int pcnet_initialize(bd_t*);
  47 extern int plb2800_eth_initialize(bd_t*);
  48 extern int ppc_4xx_eth_initialize(bd_t *);
  49 extern int ppc_440x_eth_initialize(bd_t *);
  50 extern int rtl8139_initialize(bd_t*);
  51 extern int rtl8169_initialize(bd_t*);
  52 extern int scc_initialize(bd_t*);
  53 extern int skge_initialize(bd_t*);
  54 extern int tsec_initialize(bd_t*);
  55
  56 static struct eth_device *eth_devices, *eth_current;
  57
  58 struct eth_device *eth_get_dev(void)
  59 {
  60         return eth_current;
  61 }
  62
  63 int eth_get_dev_index (void)
  64 {
  65         struct eth_device *dev;
  66         int num = 0;
  67
  68         if (!eth_devices) {
  69                 return (-1);
  70         }
  71
  72         for (dev = eth_devices; dev; dev = dev->next) {
  73                 if (dev == eth_current)
  74                         break;
  75                 ++num;
  76         }
  77
  78         if (dev) {
  79                 return (num);
  80         }
  81
  82         return (0);
  83 }
  84
  85 int eth_register(struct eth_device* dev)
  86 {
  87         struct eth_device *d;
  88
  89         if (!eth_devices) {
  90                 eth_current = eth_devices = dev;
  91 #ifdef CONFIG_NET_MULTI
  92                 /* update current ethernet name */
  93                 {
  94                         char *act = getenv("ethact");
  95                         if (act == NULL || strcmp(act, eth_current->name) != 0)
  96                                 setenv("ethact", eth_current->name);
  97                 }
  98 #endif
  99         } else {
 100                 for (d=eth_devices; d->next!=eth_devices; d=d->next);
 101                 d->next = dev;
 102         }
 103
 104         dev->state = ETH_STATE_INIT;
 105         dev->next  = eth_devices;
 106
 107         return 0;
 108 }
 109
 110 int eth_initialize(bd_t *bis)
 111 {
 112         unsigned char enetvar[32], env_enetaddr[6];
 113         int i, eth_number = 0;
 114         char *tmp, *end;
 115
 116         eth_devices = NULL;
 117         eth_current = NULL;
 118
 119 #ifdef CONFIG_DB64360
 120         mv6436x_eth_initialize(bis);
 121 #endif
 122 #ifdef CONFIG_DB64460
 123         mv6446x_eth_initialize(bis);
 124 #endif
 125 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \
 126   ( defined(CONFIG_440) && !defined(CONFIG_NET_MULTI) )
 127         ppc_4xx_eth_initialize(bis);
 128 #endif
 129 #if defined(CONFIG_440) && defined(CONFIG_NET_MULTI)
 130         ppc_440x_eth_initialize(bis);
 131 #endif
 132 #ifdef CONFIG_INCA_IP_SWITCH
 133         inca_switch_initialize(bis);
 134 #endif
 135 #ifdef CONFIG_PLB2800_ETHER
 136         plb2800_eth_initialize(bis);
 137 #endif
 138 #ifdef SCC_ENET
 139         scc_initialize(bis);
 140 #endif
 141 #if defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FCC)
 142         fec_initialize(bis);
 143 #endif
 144 #if defined(CONFIG_MPC5xxx_FEC)
 145         mpc5xxx_fec_initialize(bis);
 146 #endif
 147 #if defined(CONFIG_SK98)
 148         skge_initialize(bis);
 149 #endif
 150 #ifdef CONFIG_TSEC_ENET
 151         tsec_initialize(bis);
 152 #endif
 153 #if defined(CONFIG_AU1X00)
 154         au1x00_enet_initialize(bis);
 155 #endif
 156 #ifdef CONFIG_E1000
 157         e1000_initialize(bis);
 158 #endif
 159 #ifdef CONFIG_EEPRO100
 160         eepro100_initialize(bis);
 161 #endif
 162 #ifdef CONFIG_TULIP
 163         dc21x4x_initialize(bis);
 164 #endif
 165 #ifdef CONFIG_3COM
 166         eth_3com_initialize(bis);
 167 #endif
 168 #ifdef CONFIG_PCNET
 169         pcnet_initialize(bis);
 170 #endif
 171 #ifdef CFG_GT_6426x
 172         gt6426x_eth_initialize(bis);
 173 #endif
 174 #ifdef CONFIG_NATSEMI
 175         natsemi_initialize(bis);
 176 #endif
 177 #ifdef CONFIG_NS8382X
 178         ns8382x_initialize(bis);
 179 #endif
 180 #if defined(CONFIG_RTL8139)
 181         rtl8139_initialize(bis);
 182 #endif
 183 #if defined(CONFIG_RTL8169)
 184         rtl8169_initialize(bis);
 185 #endif
 186
 187         if (!eth_devices) {
 188                 puts ("No ethernet found.\n");
 189         } else {
 190                 struct eth_device *dev = eth_devices;
 191                 char *ethprime = getenv ("ethprime");
 192
 193                 do {
 194                         if (eth_number)
 195                                 puts (", ");
 196
 197                         printf("%s", dev->name);
 198
 199                         if (ethprime && strcmp (dev->name, ethprime) == 0) {
 200                                 eth_current = dev;
 201                                 puts (" [PRIME]");
 202                         }
 203
 204                         sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
 205                         tmp = getenv (enetvar);
 206
 207                         for (i=0; i<6; i++) {
 208                                 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
 209                                 if (tmp)
 210                                         tmp = (*end) ? end+1 : end;
 211                         }
 212
 213                         if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
 214                                 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
 215                                     memcmp(dev->enetaddr, env_enetaddr, 6))
 216                                 {
 217                                         printf ("\nWarning: %s MAC addresses don't match:\n",
 218                                                 dev->name);
 219                                         printf ("Address in SROM is         "
 220                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 221                                                dev->enetaddr[0], dev->enetaddr[1],
 222                                                dev->enetaddr[2], dev->enetaddr[3],
 223                                                dev->enetaddr[4], dev->enetaddr[5]);
 224                                         printf ("Address in environment is  "
 225                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 226                                                env_enetaddr[0], env_enetaddr[1],
 227                                                env_enetaddr[2], env_enetaddr[3],
 228                                                env_enetaddr[4], env_enetaddr[5]);
 229                                 }
 230
 231                                 memcpy(dev->enetaddr, env_enetaddr, 6);
 232                         }
 233
 234                         eth_number++;
 235                         dev = dev->next;
 236                 } while(dev != eth_devices);
 237
 238 #ifdef CONFIG_NET_MULTI
 239                 /* update current ethernet name */
 240                 if (eth_current) {
 241                         char *act = getenv("ethact");
 242                         if (act == NULL || strcmp(act, eth_current->name) != 0)
 243                                 setenv("ethact", eth_current->name);
 244                 } else
 245                         setenv("ethact", NULL);
 246 #endif
 247
 248                 putc ('\n');
 249         }
 250
 251         return eth_number;
 252 }
 253
 254 void eth_set_enetaddr(int num, char *addr) {
 255         struct eth_device *dev;
 256         unsigned char enetaddr[6];
 257         char *end;
 258         int i;
 259
 260         debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
 261
 262         if (!eth_devices)
 263                 return;
 264
 265         for (i=0; i<6; i++) {
 266                 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
 267                 if (addr)
 268                         addr = (*end) ? end+1 : end;
 269         }
 270
 271         dev = eth_devices;
 272         while(num-- > 0) {
 273                 dev = dev->next;
 274
 275                 if (dev == eth_devices)
 276                         return;
 277         }
 278
 279         debug ( "Setting new HW address on %s\n"
 280                 "New Address is             %02X:%02X:%02X:%02X:%02X:%02X\n",
 281                 dev->name,
 282                 dev->enetaddr[0], dev->enetaddr[1],
 283                 dev->enetaddr[2], dev->enetaddr[3],
 284                 dev->enetaddr[4], dev->enetaddr[5]);
 285
 286         memcpy(dev->enetaddr, enetaddr, 6);
 287 }
 288
 289 int eth_init(bd_t *bis)
 290 {
 291         struct eth_device* old_current;
 292
 293         if (!eth_current)
 294                 return 0;
 295
 296         old_current = eth_current;
 297         do {
 298                 debug ("Trying %s\n", eth_current->name);
 299
 300                 if (eth_current->init(eth_current, bis)) {
 301                         eth_current->state = ETH_STATE_ACTIVE;
 302
 303                         return 1;
 304                 }
 305                 debug  ("FAIL\n");
 306
 307                 eth_try_another(0);
 308         } while (old_current != eth_current);
 309
 310         return 0;
 311 }
 312
 313 void eth_halt(void)
 314 {
 315         if (!eth_current)
 316                 return;
 317
 318         eth_current->halt(eth_current);
 319
 320         eth_current->state = ETH_STATE_PASSIVE;
 321 }
 322
 323 int eth_send(volatile void *packet, int length)
 324 {
 325         if (!eth_current)
 326                 return -1;
 327
 328         return eth_current->send(eth_current, packet, length);
 329 }
 330
 331 int eth_rx(void)
 332 {
 333         if (!eth_current)
 334                 return -1;
 335
 336         return eth_current->recv(eth_current);
 337 }
 338
 339 void eth_try_another(int first_restart)
 340 {
 341         static struct eth_device *first_failed = NULL;
 342
 343         if (!eth_current)
 344                 return;
 345
 346         if (first_restart) {
 347                 first_failed = eth_current;
 348         }
 349
 350         eth_current = eth_current->next;
 351
 352 #ifdef CONFIG_NET_MULTI
 353         /* update current ethernet name */
 354         {
 355                 char *act = getenv("ethact");
 356                 if (act == NULL || strcmp(act, eth_current->name) != 0)
 357                         setenv("ethact", eth_current->name);
 358         }
 359 #endif
 360
 361         if (first_failed == eth_current) {
 362                 NetRestartWrap = 1;
 363         }
 364 }
 365
 366 #ifdef CONFIG_NET_MULTI
 367 void eth_set_current(void)
 368 {
 369         char *act;
 370         struct eth_device* old_current;
 371
 372         if (!eth_current)       /* XXX no current */
 373                 return;
 374
 375         act = getenv("ethact");
 376         if (act != NULL) {
 377                 old_current = eth_current;
 378                 do {
 379                         if (strcmp(eth_current->name, act) == 0)
 380                                 return;
 381                         eth_current = eth_current->next;
 382                 } while (old_current != eth_current);
 383         }
 384
 385         setenv("ethact", eth_current->name);
 386 }
 387 #endif
 388
 389 char *eth_get_name (void)
 390 {
 391         return (eth_current ? eth_current->name : "unknown");
 392 }
 393 #endif