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