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 /*
  32  * CPU and board-specific Ethernet initializations.  Aliased function
  33  * signals caller to move on
  34  */
  35 static int __def_eth_init(bd_t *bis)
  36 {
  37         return -1;
  38 }
  39 int cpu_eth_init(bd_t *bis) __attribute((weak, alias("__def_eth_init")));
  40 int board_eth_init(bd_t *bis) __attribute((weak, alias("__def_eth_init")));
  41
  42 #ifdef CFG_GT_6426x
  43 extern int gt6426x_eth_initialize(bd_t *bis);
  44 #endif
  45
  46 extern int au1x00_enet_initialize(bd_t*);
  47 extern int dc21x4x_initialize(bd_t*);
  48 extern int e1000_initialize(bd_t*);
  49 extern int eepro100_initialize(bd_t*);
  50 extern int eth_3com_initialize(bd_t*);
  51 extern int fec_initialize(bd_t*);
  52 extern int inca_switch_initialize(bd_t*);
  53 extern int mpc5xxx_fec_initialize(bd_t*);
  54 extern int mpc512x_fec_initialize(bd_t*);
  55 extern int mpc8220_fec_initialize(bd_t*);
  56 extern int mv6436x_eth_initialize(bd_t *);
  57 extern int mv6446x_eth_initialize(bd_t *);
  58 extern int natsemi_initialize(bd_t*);
  59 extern int ns8382x_initialize(bd_t*);
  60 extern int pcnet_initialize(bd_t*);
  61 extern int plb2800_eth_initialize(bd_t*);
  62 extern int ppc_4xx_eth_initialize(bd_t *);
  63 extern int rtl8139_initialize(bd_t*);
  64 extern int rtl8169_initialize(bd_t*);
  65 extern int scc_initialize(bd_t*);
  66 extern int skge_initialize(bd_t*);
  67 extern int tsi108_eth_initialize(bd_t*);
  68 extern int uli526x_initialize(bd_t *);
  69 extern int npe_initialize(bd_t *);
  70 extern int uec_initialize(int);
  71 extern int bfin_EMAC_initialize(bd_t *);
  72 extern int at91sam9_eth_initialize(bd_t *);
  73
  74 #ifdef CONFIG_API
  75 extern void (*push_packet)(volatile void *, int);
  76
  77 static struct {
  78         uchar data[PKTSIZE];
  79         int length;
  80 } eth_rcv_bufs[PKTBUFSRX];
  81
  82 static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
  83 #endif
  84
  85 static struct eth_device *eth_devices, *eth_current;
  86
  87 struct eth_device *eth_get_dev(void)
  88 {
  89         return eth_current;
  90 }
  91
  92 struct eth_device *eth_get_dev_by_name(char *devname)
  93 {
  94         struct eth_device *dev, *target_dev;
  95
  96         if (!eth_devices)
  97                 return NULL;
  98
  99         dev = eth_devices;
 100         target_dev = NULL;
 101         do {
 102                 if (strcmp(devname, dev->name) == 0) {
 103                         target_dev = dev;
 104                         break;
 105                 }
 106                 dev = dev->next;
 107         } while (dev != eth_devices);
 108
 109         return target_dev;
 110 }
 111
 112 int eth_get_dev_index (void)
 113 {
 114         struct eth_device *dev;
 115         int num = 0;
 116
 117         if (!eth_devices) {
 118                 return (-1);
 119         }
 120
 121         for (dev = eth_devices; dev; dev = dev->next) {
 122                 if (dev == eth_current)
 123                         break;
 124                 ++num;
 125         }
 126
 127         if (dev) {
 128                 return (num);
 129         }
 130
 131         return (0);
 132 }
 133
 134 int eth_register(struct eth_device* dev)
 135 {
 136         struct eth_device *d;
 137
 138         if (!eth_devices) {
 139                 eth_current = eth_devices = dev;
 140 #ifdef CONFIG_NET_MULTI
 141                 /* update current ethernet name */
 142                 {
 143                         char *act = getenv("ethact");
 144                         if (act == NULL || strcmp(act, eth_current->name) != 0)
 145                                 setenv("ethact", eth_current->name);
 146                 }
 147 #endif
 148         } else {
 149                 for (d=eth_devices; d->next!=eth_devices; d=d->next);
 150                 d->next = dev;
 151         }
 152
 153         dev->state = ETH_STATE_INIT;
 154         dev->next  = eth_devices;
 155
 156         return 0;
 157 }
 158
 159 int eth_initialize(bd_t *bis)
 160 {
 161         char enetvar[32];
 162         unsigned char env_enetaddr[6];
 163         int i, eth_number = 0;
 164         char *tmp, *end;
 165
 166         eth_devices = NULL;
 167         eth_current = NULL;
 168
 169         show_boot_progress (64);
 170 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 171         miiphy_init();
 172 #endif
 173         /* Try board-specific initialization first.  If it fails or isn't
 174          * present, try the cpu-specific initialization */
 175         if (board_eth_init(bis) < 0)
 176                 cpu_eth_init(bis);
 177
 178 #if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
 179         mv6436x_eth_initialize(bis);
 180 #endif
 181 #if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
 182         mv6446x_eth_initialize(bis);
 183 #endif
 184 #if defined(CONFIG_4xx) && !defined(CONFIG_IOP480) && !defined(CONFIG_AP1000)
 185         ppc_4xx_eth_initialize(bis);
 186 #endif
 187 #ifdef CONFIG_INCA_IP_SWITCH
 188         inca_switch_initialize(bis);
 189 #endif
 190 #ifdef CONFIG_PLB2800_ETHER
 191         plb2800_eth_initialize(bis);
 192 #endif
 193 #ifdef SCC_ENET
 194         scc_initialize(bis);
 195 #endif
 196 #if defined(CONFIG_MPC5xxx_FEC)
 197         mpc5xxx_fec_initialize(bis);
 198 #endif
 199 #if defined(CONFIG_MPC512x_FEC)
 200         mpc512x_fec_initialize (bis);
 201 #endif
 202 #if defined(CONFIG_MPC8220_FEC)
 203         mpc8220_fec_initialize(bis);
 204 #endif
 205 #if defined(CONFIG_SK98)
 206         skge_initialize(bis);
 207 #endif
 208 #if defined(CONFIG_UEC_ETH1)
 209         uec_initialize(0);
 210 #endif
 211 #if defined(CONFIG_UEC_ETH2)
 212         uec_initialize(1);
 213 #endif
 214 #if defined(CONFIG_UEC_ETH3)
 215         uec_initialize(2);
 216 #endif
 217 #if defined(CONFIG_UEC_ETH4)
 218         uec_initialize(3);
 219 #endif
 220
 221 #if defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FCC)
 222         fec_initialize(bis);
 223 #endif
 224 #if defined(CONFIG_AU1X00)
 225         au1x00_enet_initialize(bis);
 226 #endif
 227 #if defined(CONFIG_IXP4XX_NPE)
 228         npe_initialize(bis);
 229 #endif
 230 #ifdef CONFIG_E1000
 231         e1000_initialize(bis);
 232 #endif
 233 #ifdef CONFIG_EEPRO100
 234         eepro100_initialize(bis);
 235 #endif
 236 #ifdef CONFIG_TULIP
 237         dc21x4x_initialize(bis);
 238 #endif
 239 #ifdef CONFIG_3COM
 240         eth_3com_initialize(bis);
 241 #endif
 242 #ifdef CONFIG_PCNET
 243         pcnet_initialize(bis);
 244 #endif
 245 #ifdef CFG_GT_6426x
 246         gt6426x_eth_initialize(bis);
 247 #endif
 248 #ifdef CONFIG_NATSEMI
 249         natsemi_initialize(bis);
 250 #endif
 251 #ifdef CONFIG_NS8382X
 252         ns8382x_initialize(bis);
 253 #endif
 254 #if defined(CONFIG_TSI108_ETH)
 255         tsi108_eth_initialize(bis);
 256 #endif
 257 #if defined(CONFIG_ULI526X)
 258         uli526x_initialize(bis);
 259 #endif
 260 #if defined(CONFIG_RTL8139)
 261         rtl8139_initialize(bis);
 262 #endif
 263 #if defined(CONFIG_RTL8169)
 264         rtl8169_initialize(bis);
 265 #endif
 266 #if defined(CONFIG_BF537)
 267         bfin_EMAC_initialize(bis);
 268 #endif
 269 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
 270     defined(CONFIG_AT91SAM9263)
 271         at91sam9_eth_initialize(bis);
 272 #endif
 273
 274         if (!eth_devices) {
 275                 puts ("No ethernet found.\n");
 276                 show_boot_progress (-64);
 277         } else {
 278                 struct eth_device *dev = eth_devices;
 279                 char *ethprime = getenv ("ethprime");
 280
 281                 show_boot_progress (65);
 282                 do {
 283                         if (eth_number)
 284                                 puts (", ");
 285
 286                         printf("%s", dev->name);
 287
 288                         if (ethprime && strcmp (dev->name, ethprime) == 0) {
 289                                 eth_current = dev;
 290                                 puts (" [PRIME]");
 291                         }
 292
 293                         sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
 294                         tmp = getenv (enetvar);
 295
 296                         for (i=0; i<6; i++) {
 297                                 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
 298                                 if (tmp)
 299                                         tmp = (*end) ? end+1 : end;
 300                         }
 301
 302                         if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
 303                                 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
 304                                     memcmp(dev->enetaddr, env_enetaddr, 6))
 305                                 {
 306                                         printf ("\nWarning: %s MAC addresses don't match:\n",
 307                                                 dev->name);
 308                                         printf ("Address in SROM is         "
 309                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 310                                                dev->enetaddr[0], dev->enetaddr[1],
 311                                                dev->enetaddr[2], dev->enetaddr[3],
 312                                                dev->enetaddr[4], dev->enetaddr[5]);
 313                                         printf ("Address in environment is  "
 314                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 315                                                env_enetaddr[0], env_enetaddr[1],
 316                                                env_enetaddr[2], env_enetaddr[3],
 317                                                env_enetaddr[4], env_enetaddr[5]);
 318                                 }
 319
 320                                 memcpy(dev->enetaddr, env_enetaddr, 6);
 321                         }
 322
 323                         eth_number++;
 324                         dev = dev->next;
 325                 } while(dev != eth_devices);
 326
 327 #ifdef CONFIG_NET_MULTI
 328                 /* update current ethernet name */
 329                 if (eth_current) {
 330                         char *act = getenv("ethact");
 331                         if (act == NULL || strcmp(act, eth_current->name) != 0)
 332                                 setenv("ethact", eth_current->name);
 333                 } else
 334                         setenv("ethact", NULL);
 335 #endif
 336
 337                 putc ('\n');
 338         }
 339
 340         return eth_number;
 341 }
 342
 343 void eth_set_enetaddr(int num, char *addr) {
 344         struct eth_device *dev;
 345         unsigned char enetaddr[6];
 346         char *end;
 347         int i;
 348
 349         debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
 350
 351         if (!eth_devices)
 352                 return;
 353
 354         for (i=0; i<6; i++) {
 355                 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
 356                 if (addr)
 357                         addr = (*end) ? end+1 : end;
 358         }
 359
 360         dev = eth_devices;
 361         while(num-- > 0) {
 362                 dev = dev->next;
 363
 364                 if (dev == eth_devices)
 365                         return;
 366         }
 367
 368         debug ( "Setting new HW address on %s\n"
 369                 "New Address is             %02X:%02X:%02X:%02X:%02X:%02X\n",
 370                 dev->name,
 371                 enetaddr[0], enetaddr[1],
 372                 enetaddr[2], enetaddr[3],
 373                 enetaddr[4], enetaddr[5]);
 374
 375         memcpy(dev->enetaddr, enetaddr, 6);
 376 }
 377 #ifdef CONFIG_MCAST_TFTP
 378 /* Multicast.
 379  * mcast_addr: multicast ipaddr from which multicast Mac is made
 380  * join: 1=join, 0=leave.
 381  */
 382 int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
 383 {
 384  u8 mcast_mac[6];
 385         if (!eth_current || !eth_current->mcast)
 386                 return -1;
 387         mcast_mac[5] = htonl(mcast_ip) & 0xff;
 388         mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
 389         mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
 390         mcast_mac[2] = 0x5e;
 391         mcast_mac[1] = 0x0;
 392         mcast_mac[0] = 0x1;
 393         return eth_current->mcast(eth_current, mcast_mac, join);
 394 }
 395
 396 /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
 397  * and this is the ethernet-crc method needed for TSEC -- and perhaps
 398  * some other adapter -- hash tables
 399  */
 400 #define CRCPOLY_LE 0xedb88320
 401 u32 ether_crc (size_t len, unsigned char const *p)
 402 {
 403         int i;
 404         u32 crc;
 405         crc = ~0;
 406         while (len--) {
 407                 crc ^= *p++;
 408                 for (i = 0; i < 8; i++)
 409                         crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
 410         }
 411         /* an reverse the bits, cuz of way they arrive -- last-first */
 412         crc = (crc >> 16) | (crc << 16);
 413         crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
 414         crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
 415         crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
 416         crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
 417         return crc;
 418 }
 419
 420 #endif
 421
 422
 423 int eth_init(bd_t *bis)
 424 {
 425         struct eth_device* old_current;
 426
 427         if (!eth_current) {
 428                 puts ("No ethernet found.\n");
 429                 return -1;
 430         }
 431
 432         old_current = eth_current;
 433         do {
 434                 debug ("Trying %s\n", eth_current->name);
 435
 436                 if (eth_current->init(eth_current,bis) >= 0) {
 437                         eth_current->state = ETH_STATE_ACTIVE;
 438
 439                         return 0;
 440                 }
 441                 debug  ("FAIL\n");
 442
 443                 eth_try_another(0);
 444         } while (old_current != eth_current);
 445
 446         return -1;
 447 }
 448
 449 void eth_halt(void)
 450 {
 451         if (!eth_current)
 452                 return;
 453
 454         eth_current->halt(eth_current);
 455
 456         eth_current->state = ETH_STATE_PASSIVE;
 457 }
 458
 459 int eth_send(volatile void *packet, int length)
 460 {
 461         if (!eth_current)
 462                 return -1;
 463
 464         return eth_current->send(eth_current, packet, length);
 465 }
 466
 467 int eth_rx(void)
 468 {
 469         if (!eth_current)
 470                 return -1;
 471
 472         return eth_current->recv(eth_current);
 473 }
 474
 475 #ifdef CONFIG_API
 476 static void eth_save_packet(volatile void *packet, int length)
 477 {
 478         volatile char *p = packet;
 479         int i;
 480
 481         if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
 482                 return;
 483
 484         if (PKTSIZE < length)
 485                 return;
 486
 487         for (i = 0; i < length; i++)
 488                 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
 489
 490         eth_rcv_bufs[eth_rcv_last].length = length;
 491         eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
 492 }
 493
 494 int eth_receive(volatile void *packet, int length)
 495 {
 496         volatile char *p = packet;
 497         void *pp = push_packet;
 498         int i;
 499
 500         if (eth_rcv_current == eth_rcv_last) {
 501                 push_packet = eth_save_packet;
 502                 eth_rx();
 503                 push_packet = pp;
 504
 505                 if (eth_rcv_current == eth_rcv_last)
 506                         return -1;
 507         }
 508
 509         if (length < eth_rcv_bufs[eth_rcv_current].length)
 510                 return -1;
 511
 512         length = eth_rcv_bufs[eth_rcv_current].length;
 513
 514         for (i = 0; i < length; i++)
 515                 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
 516
 517         eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
 518         return length;
 519 }
 520 #endif /* CONFIG_API */
 521
 522 void eth_try_another(int first_restart)
 523 {
 524         static struct eth_device *first_failed = NULL;
 525         char *ethrotate;
 526
 527         /*
 528          * Do not rotate between network interfaces when
 529          * 'ethrotate' variable is set to 'no'.
 530          */
 531         if (((ethrotate = getenv ("ethrotate")) != NULL) &&
 532             (strcmp(ethrotate, "no") == 0))
 533                 return;
 534
 535         if (!eth_current)
 536                 return;
 537
 538         if (first_restart) {
 539                 first_failed = eth_current;
 540         }
 541
 542         eth_current = eth_current->next;
 543
 544 #ifdef CONFIG_NET_MULTI
 545         /* update current ethernet name */
 546         {
 547                 char *act = getenv("ethact");
 548                 if (act == NULL || strcmp(act, eth_current->name) != 0)
 549                         setenv("ethact", eth_current->name);
 550         }
 551 #endif
 552
 553         if (first_failed == eth_current) {
 554                 NetRestartWrap = 1;
 555         }
 556 }
 557
 558 #ifdef CONFIG_NET_MULTI
 559 void eth_set_current(void)
 560 {
 561         char *act;
 562         struct eth_device* old_current;
 563
 564         if (!eth_current)       /* XXX no current */
 565                 return;
 566
 567         act = getenv("ethact");
 568         if (act != NULL) {
 569                 old_current = eth_current;
 570                 do {
 571                         if (strcmp(eth_current->name, act) == 0)
 572                                 return;
 573                         eth_current = eth_current->next;
 574                 } while (old_current != eth_current);
 575         }
 576
 577         setenv("ethact", eth_current->name);
 578 }
 579 #endif
 580
 581 char *eth_get_name (void)
 582 {
 583         return (eth_current ? eth_current->name : "unknown");
 584 }
 585 #elif defined(CONFIG_CMD_NET) && !defined(CONFIG_NET_MULTI)
 586
 587 extern int at91rm9200_miiphy_initialize(bd_t *bis);
 588 extern int emac4xx_miiphy_initialize(bd_t *bis);
 589 extern int mcf52x2_miiphy_initialize(bd_t *bis);
 590 extern int ns7520_miiphy_initialize(bd_t *bis);
 591 extern int dm644x_eth_miiphy_initialize(bd_t *bis);
 592
 593
 594 int eth_initialize(bd_t *bis)
 595 {
 596 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 597         miiphy_init();
 598 #endif
 599
 600 #if defined(CONFIG_AT91RM9200)
 601         at91rm9200_miiphy_initialize(bis);
 602 #endif
 603 #if defined(CONFIG_4xx) && !defined(CONFIG_IOP480) \
 604         && !defined(CONFIG_AP1000) && !defined(CONFIG_405)
 605         emac4xx_miiphy_initialize(bis);
 606 #endif
 607 #if defined(CONFIG_MCF52x2)
 608         mcf52x2_miiphy_initialize(bis);
 609 #endif
 610 #if defined(CONFIG_DRIVER_NS7520_ETHERNET)
 611         ns7520_miiphy_initialize(bis);
 612 #endif
 613 #if defined(CONFIG_DRIVER_TI_EMAC)
 614         dm644x_eth_miiphy_initialize(bis);
 615 #endif
 616         return 0;
 617 }
 618 #endif