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