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 #include <miiphy.h>
  28
  29 #if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI)
  30
  31 #ifdef CFG_GT_6426x
  32 extern int gt6426x_eth_initialize(bd_t *bis);
  33 #endif
  34
  35 extern int au1x00_enet_initialize(bd_t*);
  36 extern int dc21x4x_initialize(bd_t*);
  37 extern int e1000_initialize(bd_t*);
  38 extern int eepro100_initialize(bd_t*);
  39 extern int eth_3com_initialize(bd_t*);
  40 extern int fec_initialize(bd_t*);
  41 extern int inca_switch_initialize(bd_t*);
  42 extern int mpc5xxx_fec_initialize(bd_t*);
  43 extern int mpc512x_fec_initialize(bd_t*);
  44 extern int mpc8220_fec_initialize(bd_t*);
  45 extern int mv6436x_eth_initialize(bd_t *);
  46 extern int mv6446x_eth_initialize(bd_t *);
  47 extern int natsemi_initialize(bd_t*);
  48 extern int ns8382x_initialize(bd_t*);
  49 extern int pcnet_initialize(bd_t*);
  50 extern int plb2800_eth_initialize(bd_t*);
  51 extern int ppc_4xx_eth_initialize(bd_t *);
  52 extern int rtl8139_initialize(bd_t*);
  53 extern int rtl8169_initialize(bd_t*);
  54 extern int scc_initialize(bd_t*);
  55 extern int skge_initialize(bd_t*);
  56 extern int tsi108_eth_initialize(bd_t*);
  57 extern int uli526x_initialize(bd_t *);
  58 extern int tsec_initialize(bd_t*, int, char *);
  59 extern int npe_initialize(bd_t *);
  60 extern int uec_initialize(int);
  61 extern int bfin_EMAC_initialize(bd_t *);
  62 extern int atstk1000_eth_initialize(bd_t *);
  63 extern int mcffec_initialize(bd_t*);
  64 extern int mcdmafec_initialize(bd_t*);
  65
  66 #ifdef CONFIG_API
  67 extern void (*push_packet)(volatile void *, int);
  68
  69 static struct {
  70         uchar data[PKTSIZE];
  71         int length;
  72 } eth_rcv_bufs[PKTBUFSRX];
  73
  74 static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
  75 #endif
  76
  77 static struct eth_device *eth_devices, *eth_current;
  78
  79 struct eth_device *eth_get_dev(void)
  80 {
  81         return eth_current;
  82 }
  83
  84 struct eth_device *eth_get_dev_by_name(char *devname)
  85 {
  86         struct eth_device *dev, *target_dev;
  87
  88         if (!eth_devices)
  89                 return NULL;
  90
  91         dev = eth_devices;
  92         target_dev = NULL;
  93         do {
  94                 if (strcmp(devname, dev->name) == 0) {
  95                         target_dev = dev;
  96                         break;
  97                 }
  98                 dev = dev->next;
  99         } while (dev != eth_devices);
 100
 101         return target_dev;
 102 }
 103
 104 int eth_get_dev_index (void)
 105 {
 106         struct eth_device *dev;
 107         int num = 0;
 108
 109         if (!eth_devices) {
 110                 return (-1);
 111         }
 112
 113         for (dev = eth_devices; dev; dev = dev->next) {
 114                 if (dev == eth_current)
 115                         break;
 116                 ++num;
 117         }
 118
 119         if (dev) {
 120                 return (num);
 121         }
 122
 123         return (0);
 124 }
 125
 126 int eth_register(struct eth_device* dev)
 127 {
 128         struct eth_device *d;
 129
 130         if (!eth_devices) {
 131                 eth_current = eth_devices = dev;
 132 #ifdef CONFIG_NET_MULTI
 133                 /* update current ethernet name */
 134                 {
 135                         char *act = getenv("ethact");
 136                         if (act == NULL || strcmp(act, eth_current->name) != 0)
 137                                 setenv("ethact", eth_current->name);
 138                 }
 139 #endif
 140         } else {
 141                 for (d=eth_devices; d->next!=eth_devices; d=d->next);
 142                 d->next = dev;
 143         }
 144
 145         dev->state = ETH_STATE_INIT;
 146         dev->next  = eth_devices;
 147
 148         return 0;
 149 }
 150
 151 int eth_initialize(bd_t *bis)
 152 {
 153         char enetvar[32];
 154         unsigned char env_enetaddr[6];
 155         int i, eth_number = 0;
 156         char *tmp, *end;
 157
 158         eth_devices = NULL;
 159         eth_current = NULL;
 160
 161         show_boot_progress (64);
 162 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 163         miiphy_init();
 164 #endif
 165
 166 #if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
 167         mv6436x_eth_initialize(bis);
 168 #endif
 169 #if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
 170         mv6446x_eth_initialize(bis);
 171 #endif
 172 #if defined(CONFIG_4xx) && !defined(CONFIG_IOP480) && !defined(CONFIG_AP1000)
 173         ppc_4xx_eth_initialize(bis);
 174 #endif
 175 #ifdef CONFIG_INCA_IP_SWITCH
 176         inca_switch_initialize(bis);
 177 #endif
 178 #ifdef CONFIG_PLB2800_ETHER
 179         plb2800_eth_initialize(bis);
 180 #endif
 181 #ifdef SCC_ENET
 182         scc_initialize(bis);
 183 #endif
 184 #if defined(CONFIG_MPC5xxx_FEC)
 185         mpc5xxx_fec_initialize(bis);
 186 #endif
 187 #if defined(CONFIG_MPC512x_FEC)
 188         mpc512x_fec_initialize (bis);
 189 #endif
 190 #if defined(CONFIG_MPC8220_FEC)
 191         mpc8220_fec_initialize(bis);
 192 #endif
 193 #if defined(CONFIG_SK98)
 194         skge_initialize(bis);
 195 #endif
 196 #if defined(CONFIG_TSEC1)
 197         tsec_initialize(bis, 0, CONFIG_TSEC1_NAME);
 198 #endif
 199 #if defined(CONFIG_TSEC2)
 200         tsec_initialize(bis, 1, CONFIG_TSEC2_NAME);
 201 #endif
 202 #if defined(CONFIG_MPC85XX_FEC)
 203         tsec_initialize(bis, 2, CONFIG_MPC85XX_FEC_NAME);
 204 #else
 205 #    if defined(CONFIG_TSEC3)
 206         tsec_initialize(bis, 2, CONFIG_TSEC3_NAME);
 207 #    endif
 208 #    if defined(CONFIG_TSEC4)
 209         tsec_initialize(bis, 3, CONFIG_TSEC4_NAME);
 210 #    endif
 211 #endif
 212 #if defined(CONFIG_UEC_ETH1)
 213         uec_initialize(0);
 214 #endif
 215 #if defined(CONFIG_UEC_ETH2)
 216         uec_initialize(1);
 217 #endif
 218 #if defined(CONFIG_UEC_ETH3)
 219         uec_initialize(2);
 220 #endif
 221
 222 #if defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FCC)
 223         fec_initialize(bis);
 224 #endif
 225 #if defined(CONFIG_AU1X00)
 226         au1x00_enet_initialize(bis);
 227 #endif
 228 #if defined(CONFIG_IXP4XX_NPE)
 229         npe_initialize(bis);
 230 #endif
 231 #ifdef CONFIG_E1000
 232         e1000_initialize(bis);
 233 #endif
 234 #ifdef CONFIG_EEPRO100
 235         eepro100_initialize(bis);
 236 #endif
 237 #ifdef CONFIG_TULIP
 238         dc21x4x_initialize(bis);
 239 #endif
 240 #ifdef CONFIG_3COM
 241         eth_3com_initialize(bis);
 242 #endif
 243 #ifdef CONFIG_PCNET
 244         pcnet_initialize(bis);
 245 #endif
 246 #ifdef CFG_GT_6426x
 247         gt6426x_eth_initialize(bis);
 248 #endif
 249 #ifdef CONFIG_NATSEMI
 250         natsemi_initialize(bis);
 251 #endif
 252 #ifdef CONFIG_NS8382X
 253         ns8382x_initialize(bis);
 254 #endif
 255 #if defined(CONFIG_TSI108_ETH)
 256         tsi108_eth_initialize(bis);
 257 #endif
 258 #if defined(CONFIG_ULI526X)
 259         uli526x_initialize(bis);
 260 #endif
 261 #if defined(CONFIG_RTL8139)
 262         rtl8139_initialize(bis);
 263 #endif
 264 #if defined(CONFIG_RTL8169)
 265         rtl8169_initialize(bis);
 266 #endif
 267 #if defined(CONFIG_BF537)
 268         bfin_EMAC_initialize(bis);
 269 #endif
 270 #if defined(CONFIG_ATSTK1000)
 271         atstk1000_eth_initialize(bis);
 272 #endif
 273 #if defined(CONFIG_MCFFEC)
 274         mcffec_initialize(bis);
 275 #endif
 276 #if defined(CONFIG_FSLDMAFEC)
 277         mcdmafec_initialize(bis);
 278 #endif
 279
 280         if (!eth_devices) {
 281                 puts ("No ethernet found.\n");
 282                 show_boot_progress (-64);
 283         } else {
 284                 struct eth_device *dev = eth_devices;
 285                 char *ethprime = getenv ("ethprime");
 286
 287                 show_boot_progress (65);
 288                 do {
 289                         if (eth_number)
 290                                 puts (", ");
 291
 292                         printf("%s", dev->name);
 293
 294                         if (ethprime && strcmp (dev->name, ethprime) == 0) {
 295                                 eth_current = dev;
 296                                 puts (" [PRIME]");
 297                         }
 298
 299                         sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
 300                         tmp = getenv (enetvar);
 301
 302                         for (i=0; i<6; i++) {
 303                                 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
 304                                 if (tmp)
 305                                         tmp = (*end) ? end+1 : end;
 306                         }
 307
 308                         if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
 309                                 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
 310                                     memcmp(dev->enetaddr, env_enetaddr, 6))
 311                                 {
 312                                         printf ("\nWarning: %s MAC addresses don't match:\n",
 313                                                 dev->name);
 314                                         printf ("Address in SROM is         "
 315                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 316                                                dev->enetaddr[0], dev->enetaddr[1],
 317                                                dev->enetaddr[2], dev->enetaddr[3],
 318                                                dev->enetaddr[4], dev->enetaddr[5]);
 319                                         printf ("Address in environment is  "
 320                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 321                                                env_enetaddr[0], env_enetaddr[1],
 322                                                env_enetaddr[2], env_enetaddr[3],
 323                                                env_enetaddr[4], env_enetaddr[5]);
 324                                 }
 325
 326                                 memcpy(dev->enetaddr, env_enetaddr, 6);
 327                         }
 328
 329                         eth_number++;
 330                         dev = dev->next;
 331                 } while(dev != eth_devices);
 332
 333 #ifdef CONFIG_NET_MULTI
 334                 /* update current ethernet name */
 335                 if (eth_current) {
 336                         char *act = getenv("ethact");
 337                         if (act == NULL || strcmp(act, eth_current->name) != 0)
 338                                 setenv("ethact", eth_current->name);
 339                 } else
 340                         setenv("ethact", NULL);
 341 #endif
 342
 343                 putc ('\n');
 344         }
 345
 346         return eth_number;
 347 }
 348
 349 void eth_set_enetaddr(int num, char *addr) {
 350         struct eth_device *dev;
 351         unsigned char enetaddr[6];
 352         char *end;
 353         int i;
 354
 355         debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
 356
 357         if (!eth_devices)
 358                 return;
 359
 360         for (i=0; i<6; i++) {
 361                 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
 362                 if (addr)
 363                         addr = (*end) ? end+1 : end;
 364         }
 365
 366         dev = eth_devices;
 367         while(num-- > 0) {
 368                 dev = dev->next;
 369
 370                 if (dev == eth_devices)
 371                         return;
 372         }
 373
 374         debug ( "Setting new HW address on %s\n"
 375                 "New Address is             %02X:%02X:%02X:%02X:%02X:%02X\n",
 376                 dev->name,
 377                 enetaddr[0], enetaddr[1],
 378                 enetaddr[2], enetaddr[3],
 379                 enetaddr[4], enetaddr[5]);
 380
 381         memcpy(dev->enetaddr, enetaddr, 6);
 382 }
 383 #ifdef CONFIG_MCAST_TFTP
 384 /* Multicast.
 385  * mcast_addr: multicast ipaddr from which multicast Mac is made
 386  * join: 1=join, 0=leave.
 387  */
 388 int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
 389 {
 390  u8 mcast_mac[6];
 391         if (!eth_current || !eth_current->mcast)
 392                 return -1;
 393         mcast_mac[5] = htonl(mcast_ip) & 0xff;
 394         mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
 395         mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
 396         mcast_mac[2] = 0x5e;
 397         mcast_mac[1] = 0x0;
 398         mcast_mac[0] = 0x1;
 399         return eth_current->mcast(eth_current, mcast_mac, join);
 400 }
 401
 402 /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
 403  * and this is the ethernet-crc method needed for TSEC -- and perhaps
 404  * some other adapter -- hash tables
 405  */
 406 #define CRCPOLY_LE 0xedb88320
 407 u32 ether_crc (size_t len, unsigned char const *p)
 408 {
 409         int i;
 410         u32 crc;
 411         crc = ~0;
 412         while (len--) {
 413                 crc ^= *p++;
 414                 for (i = 0; i < 8; i++)
 415                         crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
 416         }
 417         /* an reverse the bits, cuz of way they arrive -- last-first */
 418         crc = (crc >> 16) | (crc << 16);
 419         crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
 420         crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
 421         crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
 422         crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
 423         return crc;
 424 }
 425
 426 #endif
 427
 428
 429 int eth_init(bd_t *bis)
 430 {
 431         struct eth_device* old_current;
 432
 433         if (!eth_current)
 434                 return -1;
 435
 436         old_current = eth_current;
 437         do {
 438                 debug ("Trying %s\n", eth_current->name);
 439
 440                 if (eth_current->init(eth_current,bis) >= 0) {
 441                         eth_current->state = ETH_STATE_ACTIVE;
 442
 443                         return 0;
 444                 }
 445                 debug  ("FAIL\n");
 446
 447                 eth_try_another(0);
 448         } while (old_current != eth_current);
 449
 450         return -1;
 451 }
 452
 453 void eth_halt(void)
 454 {
 455         if (!eth_current)
 456                 return;
 457
 458         eth_current->halt(eth_current);
 459
 460         eth_current->state = ETH_STATE_PASSIVE;
 461 }
 462
 463 int eth_send(volatile void *packet, int length)
 464 {
 465         if (!eth_current)
 466                 return -1;
 467
 468         return eth_current->send(eth_current, packet, length);
 469 }
 470
 471 int eth_rx(void)
 472 {
 473         if (!eth_current)
 474                 return -1;
 475
 476         return eth_current->recv(eth_current);
 477 }
 478
 479 #ifdef CONFIG_API
 480 static void eth_save_packet(volatile void *packet, int length)
 481 {
 482         volatile char *p = packet;
 483         int i;
 484
 485         if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
 486                 return;
 487
 488         if (PKTSIZE < length)
 489                 return;
 490
 491         for (i = 0; i < length; i++)
 492                 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
 493
 494         eth_rcv_bufs[eth_rcv_last].length = length;
 495         eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
 496 }
 497
 498 int eth_receive(volatile void *packet, int length)
 499 {
 500         volatile char *p = packet;
 501         void *pp = push_packet;
 502         int i;
 503
 504         if (eth_rcv_current == eth_rcv_last) {
 505                 push_packet = eth_save_packet;
 506                 eth_rx();
 507                 push_packet = pp;
 508
 509                 if (eth_rcv_current == eth_rcv_last)
 510                         return -1;
 511         }
 512
 513         if (length < eth_rcv_bufs[eth_rcv_current].length)
 514                 return -1;
 515
 516         length = eth_rcv_bufs[eth_rcv_current].length;
 517
 518         for (i = 0; i < length; i++)
 519                 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
 520
 521         eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
 522         return length;
 523 }
 524 #endif /* CONFIG_API */
 525
 526 void eth_try_another(int first_restart)
 527 {
 528         static struct eth_device *first_failed = NULL;
 529
 530         if (!eth_current)
 531                 return;
 532
 533         if (first_restart) {
 534                 first_failed = eth_current;
 535         }
 536
 537         eth_current = eth_current->next;
 538
 539 #ifdef CONFIG_NET_MULTI
 540         /* update current ethernet name */
 541         {
 542                 char *act = getenv("ethact");
 543                 if (act == NULL || strcmp(act, eth_current->name) != 0)
 544                         setenv("ethact", eth_current->name);
 545         }
 546 #endif
 547
 548         if (first_failed == eth_current) {
 549                 NetRestartWrap = 1;
 550         }
 551 }
 552
 553 #ifdef CONFIG_NET_MULTI
 554 void eth_set_current(void)
 555 {
 556         char *act;
 557         struct eth_device* old_current;
 558
 559         if (!eth_current)       /* XXX no current */
 560                 return;
 561
 562         act = getenv("ethact");
 563         if (act != NULL) {
 564                 old_current = eth_current;
 565                 do {
 566                         if (strcmp(eth_current->name, act) == 0)
 567                                 return;
 568                         eth_current = eth_current->next;
 569                 } while (old_current != eth_current);
 570         }
 571
 572         setenv("ethact", eth_current->name);
 573 }
 574 #endif
 575
 576 char *eth_get_name (void)
 577 {
 578         return (eth_current ? eth_current->name : "unknown");
 579 }
 580 #elif defined(CONFIG_CMD_NET) && !defined(CONFIG_NET_MULTI)
 581
 582 extern int at91rm9200_miiphy_initialize(bd_t *bis);
 583 extern int emac4xx_miiphy_initialize(bd_t *bis);
 584 extern int mcf52x2_miiphy_initialize(bd_t *bis);
 585 extern int ns7520_miiphy_initialize(bd_t *bis);
 586 extern int dm644x_eth_miiphy_initialize(bd_t *bis);
 587
 588
 589 int eth_initialize(bd_t *bis)
 590 {
 591 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 592         miiphy_init();
 593 #endif
 594
 595 #if defined(CONFIG_AT91RM9200)
 596         at91rm9200_miiphy_initialize(bis);
 597 #endif
 598 #if defined(CONFIG_4xx) && !defined(CONFIG_IOP480) \
 599         && !defined(CONFIG_AP1000) && !defined(CONFIG_405)
 600         emac4xx_miiphy_initialize(bis);
 601 #endif
 602 #if defined(CONFIG_MCF52x2)
 603         mcf52x2_miiphy_initialize(bis);
 604 #endif
 605 #if defined(CONFIG_NETARM)
 606         ns7520_miiphy_initialize(bis);
 607 #endif
 608 #if defined(CONFIG_DRIVER_TI_EMAC)
 609         dm644x_eth_miiphy_initialize(bis);
 610 #endif
 611         return 0;
 612 }
 613 #endif