net/eth.c

   1 /*
   2  * (C) Copyright 2001-2004
   3  * Wolfgang Denk, DENX Software Engineering, [email protected].
   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) || ( defined(CONFIG_440) && !defined(CONFIG_NET_MULTI) )
 126         ppc_4xx_eth_initialize(bis);
 127 #endif
 128 #if defined(CONFIG_440) && defined(CONFIG_NET_MULTI)
 129         ppc_440x_eth_initialize(bis);
 130 #endif
 131 #ifdef CONFIG_INCA_IP_SWITCH
 132         inca_switch_initialize(bis);
 133 #endif
 134 #ifdef CONFIG_PLB2800_ETHER
 135         plb2800_eth_initialize(bis);
 136 #endif
 137 #ifdef CONFIG_E1000
 138         e1000_initialize(bis);
 139 #endif
 140 #ifdef CONFIG_EEPRO100
 141         eepro100_initialize(bis);
 142 #endif
 143 #ifdef CONFIG_TULIP
 144         dc21x4x_initialize(bis);
 145 #endif
 146 #ifdef CONFIG_3COM
 147         eth_3com_initialize(bis);
 148 #endif
 149 #ifdef CONFIG_PCNET
 150         pcnet_initialize(bis);
 151 #endif
 152 #ifdef CFG_GT_6426x
 153         gt6426x_eth_initialize(bis);
 154 #endif
 155 #ifdef CONFIG_NATSEMI
 156         natsemi_initialize(bis);
 157 #endif
 158 #ifdef CONFIG_NS8382X
 159         ns8382x_initialize(bis);
 160 #endif
 161 #ifdef SCC_ENET
 162         scc_initialize(bis);
 163 #endif
 164 #if defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FCC)
 165         fec_initialize(bis);
 166 #endif
 167 #if defined(CONFIG_MPC5xxx_FEC)
 168         mpc5xxx_fec_initialize(bis);
 169 #endif
 170 #if defined(CONFIG_SK98)
 171         skge_initialize(bis);
 172 #endif
 173 #ifdef CONFIG_TSEC_ENET
 174        tsec_initialize(bis);
 175 #endif
 176 #if defined(CONFIG_AU1X00)
 177         au1x00_enet_initialize(bis);
 178 #endif
 179 #if defined(CONFIG_RTL8139)
 180         rtl8139_initialize(bis);
 181 #endif
 182 #if defined(CONFIG_RTL8169)
 183         rtl8169_initialize(bis);
 184 #endif
 185
 186         if (!eth_devices) {
 187                 puts ("No ethernet found.\n");
 188         } else {
 189                 struct eth_device *dev = eth_devices;
 190                 char *ethprime = getenv ("ethprime");
 191
 192                 do {
 193                         if (eth_number)
 194                                 puts (", ");
 195
 196                         printf("%s", dev->name);
 197
 198                         if (ethprime && strcmp (dev->name, ethprime) == 0) {
 199                                 eth_current = dev;
 200                                 puts (" [PRIME]");
 201                         }
 202
 203                         sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
 204                         tmp = getenv (enetvar);
 205
 206                         for (i=0; i<6; i++) {
 207                                 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
 208                                 if (tmp)
 209                                         tmp = (*end) ? end+1 : end;
 210                         }
 211
 212                         if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
 213                                 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
 214                                     memcmp(dev->enetaddr, env_enetaddr, 6))
 215                                 {
 216                                         printf("\nWarning: %s MAC addresses don't match:\n", dev->name);
 217                                         printf("Address in SROM is         "
 218                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 219                                                dev->enetaddr[0], dev->enetaddr[1],
 220                                                dev->enetaddr[2], dev->enetaddr[3],
 221                                                dev->enetaddr[4], dev->enetaddr[5]);
 222                                         printf("Address in environment is  "
 223                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 224                                                env_enetaddr[0], env_enetaddr[1],
 225                                                env_enetaddr[2], env_enetaddr[3],
 226                                                env_enetaddr[4], env_enetaddr[5]);
 227                                 }
 228
 229                                 memcpy(dev->enetaddr, env_enetaddr, 6);
 230                         }
 231
 232                         eth_number++;
 233                         dev = dev->next;
 234                 } while(dev != eth_devices);
 235
 236 #ifdef CONFIG_NET_MULTI
 237                 /* update current ethernet name */
 238                 if (eth_current) {
 239                         char *act = getenv("ethact");
 240                         if (act == NULL || strcmp(act, eth_current->name) != 0)
 241                                 setenv("ethact", eth_current->name);
 242                 } else
 243                         setenv("ethact", NULL);
 244 #endif
 245
 246                 putc ('\n');
 247         }
 248
 249         return eth_number;
 250 }
 251
 252 void eth_set_enetaddr(int num, char *addr) {
 253         struct eth_device *dev;
 254         unsigned char enetaddr[6];
 255         char *end;
 256         int i;
 257
 258         debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
 259
 260         if (!eth_devices)
 261                 return;
 262
 263         for (i=0; i<6; i++) {
 264                 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
 265                 if (addr)
 266                         addr = (*end) ? end+1 : end;
 267         }
 268
 269         dev = eth_devices;
 270         while(num-- > 0) {
 271                 dev = dev->next;
 272
 273                 if (dev == eth_devices)
 274                         return;
 275         }
 276
 277         debug ( "Setting new HW address on %s\n"
 278                 "New Address is             %02X:%02X:%02X:%02X:%02X:%02X\n",
 279                 dev->name,
 280                 dev->enetaddr[0], dev->enetaddr[1],
 281                 dev->enetaddr[2], dev->enetaddr[3],
 282                 dev->enetaddr[4], dev->enetaddr[5]);
 283
 284         memcpy(dev->enetaddr, enetaddr, 6);
 285 }
 286
 287 int eth_init(bd_t *bis)
 288 {
 289         struct eth_device* old_current;
 290
 291         if (!eth_current)
 292                 return 0;
 293
 294         old_current = eth_current;
 295         do {
 296                 debug ("Trying %s\n", eth_current->name);
 297
 298                 if (eth_current->init(eth_current, bis)) {
 299                         eth_current->state = ETH_STATE_ACTIVE;
 300
 301                         return 1;
 302                 }
 303                 debug  ("FAIL\n");
 304
 305                 eth_try_another(0);
 306         } while (old_current != eth_current);
 307
 308         return 0;
 309 }
 310
 311 void eth_halt(void)
 312 {
 313         if (!eth_current)
 314                 return;
 315
 316         eth_current->halt(eth_current);
 317
 318         eth_current->state = ETH_STATE_PASSIVE;
 319 }
 320
 321 int eth_send(volatile void *packet, int length)
 322 {
 323         if (!eth_current)
 324                 return -1;
 325
 326         return eth_current->send(eth_current, packet, length);
 327 }
 328
 329 int eth_rx(void)
 330 {
 331         if (!eth_current)
 332                 return -1;
 333
 334         return eth_current->recv(eth_current);
 335 }
 336
 337 void eth_try_another(int first_restart)
 338 {
 339         static struct eth_device *first_failed = NULL;
 340
 341         if (!eth_current)
 342                 return;
 343
 344         if (first_restart)
 345         {
 346                 first_failed = eth_current;
 347         }
 348
 349         eth_current = eth_current->next;
 350
 351 #ifdef CONFIG_NET_MULTI
 352         /* update current ethernet name */
 353         {
 354                 char *act = getenv("ethact");
 355                 if (act == NULL || strcmp(act, eth_current->name) != 0)
 356                         setenv("ethact", eth_current->name);
 357         }
 358 #endif
 359
 360         if (first_failed == eth_current)
 361         {
 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