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 mpc8220_fec_initialize(bd_t*);
  43 extern int mv6436x_eth_initialize(bd_t *);
  44 extern int mv6446x_eth_initialize(bd_t *);
  45 extern int natsemi_initialize(bd_t*);
  46 extern int ns8382x_initialize(bd_t*);
  47 extern int pcnet_initialize(bd_t*);
  48 extern int plb2800_eth_initialize(bd_t*);
  49 extern int ppc_4xx_eth_initialize(bd_t *);
  50 extern int ppc_440x_eth_initialize(bd_t *);
  51 extern int rtl8139_initialize(bd_t*);
  52 extern int rtl8169_initialize(bd_t*);
  53 extern int scc_initialize(bd_t*);
  54 extern int skge_initialize(bd_t*);
  55 extern int tsec_initialize(bd_t*, int);
  56
  57 static struct eth_device *eth_devices, *eth_current;
  58
  59 struct eth_device *eth_get_dev(void)
  60 {
  61         return eth_current;
  62 }
  63
  64 int eth_get_dev_index (void)
  65 {
  66         struct eth_device *dev;
  67         int num = 0;
  68
  69         if (!eth_devices) {
  70                 return (-1);
  71         }
  72
  73         for (dev = eth_devices; dev; dev = dev->next) {
  74                 if (dev == eth_current)
  75                         break;
  76                 ++num;
  77         }
  78
  79         if (dev) {
  80                 return (num);
  81         }
  82
  83         return (0);
  84 }
  85
  86 int eth_register(struct eth_device* dev)
  87 {
  88         struct eth_device *d;
  89
  90         if (!eth_devices) {
  91                 eth_current = eth_devices = dev;
  92 #ifdef CONFIG_NET_MULTI
  93                 /* update current ethernet name */
  94                 {
  95                         char *act = getenv("ethact");
  96                         if (act == NULL || strcmp(act, eth_current->name) != 0)
  97                                 setenv("ethact", eth_current->name);
  98                 }
  99 #endif
 100         } else {
 101                 for (d=eth_devices; d->next!=eth_devices; d=d->next);
 102                 d->next = dev;
 103         }
 104
 105         dev->state = ETH_STATE_INIT;
 106         dev->next  = eth_devices;
 107
 108         return 0;
 109 }
 110
 111 int eth_initialize(bd_t *bis)
 112 {
 113         unsigned char enetvar[32], env_enetaddr[6];
 114         int i, eth_number = 0;
 115         char *tmp, *end;
 116
 117         eth_devices = NULL;
 118         eth_current = NULL;
 119
 120 #ifdef CONFIG_DB64360
 121         mv6436x_eth_initialize(bis);
 122 #endif
 123 #ifdef CONFIG_CPCI750
 124         mv6436x_eth_initialize(bis);
 125 #endif
 126 #ifdef CONFIG_DB64460
 127         mv6446x_eth_initialize(bis);
 128 #endif
 129 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \
 130   ( defined(CONFIG_440) && !defined(CONFIG_NET_MULTI) )
 131         ppc_4xx_eth_initialize(bis);
 132 #endif
 133 #if defined(CONFIG_440) && defined(CONFIG_NET_MULTI)
 134         ppc_440x_eth_initialize(bis);
 135 #endif
 136 #ifdef CONFIG_INCA_IP_SWITCH
 137         inca_switch_initialize(bis);
 138 #endif
 139 #ifdef CONFIG_PLB2800_ETHER
 140         plb2800_eth_initialize(bis);
 141 #endif
 142 #ifdef SCC_ENET
 143         scc_initialize(bis);
 144 #endif
 145 #if defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FCC)
 146         fec_initialize(bis);
 147 #endif
 148 #if defined(CONFIG_MPC5xxx_FEC)
 149         mpc5xxx_fec_initialize(bis);
 150 #endif
 151 #if defined(CONFIG_MPC8220_FEC)
 152         mpc8220_fec_initialize(bis);
 153 #endif
 154 #if defined(CONFIG_SK98)
 155         skge_initialize(bis);
 156 #endif
 157 #if defined(CONFIG_MPC85XX_TSEC1)
 158         tsec_initialize(bis, 0);
 159 #endif
 160 #if defined(CONFIG_MPC85XX_TSEC2)
 161         tsec_initialize(bis, 1);
 162 #endif
 163 #if defined(CONFIG_MPC85XX_FEC)
 164         tsec_initialize(bis, 2);
 165 #endif
 166 #if defined(CONFIG_AU1X00)
 167         au1x00_enet_initialize(bis);
 168 #endif
 169 #ifdef CONFIG_E1000
 170         e1000_initialize(bis);
 171 #endif
 172 #ifdef CONFIG_EEPRO100
 173         eepro100_initialize(bis);
 174 #endif
 175 #ifdef CONFIG_TULIP
 176         dc21x4x_initialize(bis);
 177 #endif
 178 #ifdef CONFIG_3COM
 179         eth_3com_initialize(bis);
 180 #endif
 181 #ifdef CONFIG_PCNET
 182         pcnet_initialize(bis);
 183 #endif
 184 #ifdef CFG_GT_6426x
 185         gt6426x_eth_initialize(bis);
 186 #endif
 187 #ifdef CONFIG_NATSEMI
 188         natsemi_initialize(bis);
 189 #endif
 190 #ifdef CONFIG_NS8382X
 191         ns8382x_initialize(bis);
 192 #endif
 193 #if defined(CONFIG_RTL8139)
 194         rtl8139_initialize(bis);
 195 #endif
 196 #if defined(CONFIG_RTL8169)
 197         rtl8169_initialize(bis);
 198 #endif
 199
 200         if (!eth_devices) {
 201                 puts ("No ethernet found.\n");
 202         } else {
 203                 struct eth_device *dev = eth_devices;
 204                 char *ethprime = getenv ("ethprime");
 205
 206                 do {
 207                         if (eth_number)
 208                                 puts (", ");
 209
 210                         printf("%s", dev->name);
 211
 212                         if (ethprime && strcmp (dev->name, ethprime) == 0) {
 213                                 eth_current = dev;
 214                                 puts (" [PRIME]");
 215                         }
 216
 217                         sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
 218                         tmp = getenv (enetvar);
 219
 220                         for (i=0; i<6; i++) {
 221                                 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
 222                                 if (tmp)
 223                                         tmp = (*end) ? end+1 : end;
 224                         }
 225
 226                         if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
 227                                 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
 228                                     memcmp(dev->enetaddr, env_enetaddr, 6))
 229                                 {
 230                                         printf ("\nWarning: %s MAC addresses don't match:\n",
 231                                                 dev->name);
 232                                         printf ("Address in SROM is         "
 233                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 234                                                dev->enetaddr[0], dev->enetaddr[1],
 235                                                dev->enetaddr[2], dev->enetaddr[3],
 236                                                dev->enetaddr[4], dev->enetaddr[5]);
 237                                         printf ("Address in environment is  "
 238                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 239                                                env_enetaddr[0], env_enetaddr[1],
 240                                                env_enetaddr[2], env_enetaddr[3],
 241                                                env_enetaddr[4], env_enetaddr[5]);
 242                                 }
 243
 244                                 memcpy(dev->enetaddr, env_enetaddr, 6);
 245                         }
 246
 247                         eth_number++;
 248                         dev = dev->next;
 249                 } while(dev != eth_devices);
 250
 251 #ifdef CONFIG_NET_MULTI
 252                 /* update current ethernet name */
 253                 if (eth_current) {
 254                         char *act = getenv("ethact");
 255                         if (act == NULL || strcmp(act, eth_current->name) != 0)
 256                                 setenv("ethact", eth_current->name);
 257                 } else
 258                         setenv("ethact", NULL);
 259 #endif
 260
 261                 putc ('\n');
 262         }
 263
 264         return eth_number;
 265 }
 266
 267 void eth_set_enetaddr(int num, char *addr) {
 268         struct eth_device *dev;
 269         unsigned char enetaddr[6];
 270         char *end;
 271         int i;
 272
 273         debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
 274
 275         if (!eth_devices)
 276                 return;
 277
 278         for (i=0; i<6; i++) {
 279                 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
 280                 if (addr)
 281                         addr = (*end) ? end+1 : end;
 282         }
 283
 284         dev = eth_devices;
 285         while(num-- > 0) {
 286                 dev = dev->next;
 287
 288                 if (dev == eth_devices)
 289                         return;
 290         }
 291
 292         debug ( "Setting new HW address on %s\n"
 293                 "New Address is             %02X:%02X:%02X:%02X:%02X:%02X\n",
 294                 dev->name,
 295                 dev->enetaddr[0], dev->enetaddr[1],
 296                 dev->enetaddr[2], dev->enetaddr[3],
 297                 dev->enetaddr[4], dev->enetaddr[5]);
 298
 299         memcpy(dev->enetaddr, enetaddr, 6);
 300 }
 301
 302 int eth_init(bd_t *bis)
 303 {
 304         struct eth_device* old_current;
 305
 306         if (!eth_current)
 307                 return 0;
 308
 309         old_current = eth_current;
 310         do {
 311                 debug ("Trying %s\n", eth_current->name);
 312
 313                 if (eth_current->init(eth_current, bis)) {
 314                         eth_current->state = ETH_STATE_ACTIVE;
 315
 316                         return 1;
 317                 }
 318                 debug  ("FAIL\n");
 319
 320                 eth_try_another(0);
 321         } while (old_current != eth_current);
 322
 323         return 0;
 324 }
 325
 326 void eth_halt(void)
 327 {
 328         if (!eth_current)
 329                 return;
 330
 331         eth_current->halt(eth_current);
 332
 333         eth_current->state = ETH_STATE_PASSIVE;
 334 }
 335
 336 int eth_send(volatile void *packet, int length)
 337 {
 338         if (!eth_current)
 339                 return -1;
 340
 341         return eth_current->send(eth_current, packet, length);
 342 }
 343
 344 int eth_rx(void)
 345 {
 346         if (!eth_current)
 347                 return -1;
 348
 349         return eth_current->recv(eth_current);
 350 }
 351
 352 void eth_try_another(int first_restart)
 353 {
 354         static struct eth_device *first_failed = NULL;
 355
 356         if (!eth_current)
 357                 return;
 358
 359         if (first_restart) {
 360                 first_failed = eth_current;
 361         }
 362
 363         eth_current = eth_current->next;
 364
 365 #ifdef CONFIG_NET_MULTI
 366         /* update current ethernet name */
 367         {
 368                 char *act = getenv("ethact");
 369                 if (act == NULL || strcmp(act, eth_current->name) != 0)
 370                         setenv("ethact", eth_current->name);
 371         }
 372 #endif
 373
 374         if (first_failed == eth_current) {
 375                 NetRestartWrap = 1;
 376         }
 377 }
 378
 379 #ifdef CONFIG_NET_MULTI
 380 void eth_set_current(void)
 381 {
 382         char *act;
 383         struct eth_device* old_current;
 384
 385         if (!eth_current)       /* XXX no current */
 386                 return;
 387
 388         act = getenv("ethact");
 389         if (act != NULL) {
 390                 old_current = eth_current;
 391                 do {
 392                         if (strcmp(eth_current->name, act) == 0)
 393                                 return;
 394                         eth_current = eth_current->next;
 395                 } while (old_current != eth_current);
 396         }
 397
 398         setenv("ethact", eth_current->name);
 399 }
 400 #endif
 401
 402 char *eth_get_name (void)
 403 {
 404         return (eth_current ? eth_current->name : "unknown");
 405 }
 406 #endif