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 greth_initialize(bd_t *);
  64 extern int atngw100_eth_initialize(bd_t *);
  65 extern int mcffec_initialize(bd_t*);
  66 extern int mcdmafec_initialize(bd_t*);
  67 extern int at91sam9_eth_initialize(bd_t *);
  68
  69 #ifdef CONFIG_API
  70 extern void (*push_packet)(volatile void *, int);
  71
  72 static struct {
  73         uchar data[PKTSIZE];
  74         int length;
  75 } eth_rcv_bufs[PKTBUFSRX];
  76
  77 static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
  78 #endif
  79
  80 static struct eth_device *eth_devices, *eth_current;
  81
  82 struct eth_device *eth_get_dev(void)
  83 {
  84         return eth_current;
  85 }
  86
  87 struct eth_device *eth_get_dev_by_name(char *devname)
  88 {
  89         struct eth_device *dev, *target_dev;
  90
  91         if (!eth_devices)
  92                 return NULL;
  93
  94         dev = eth_devices;
  95         target_dev = NULL;
  96         do {
  97                 if (strcmp(devname, dev->name) == 0) {
  98                         target_dev = dev;
  99                         break;
 100                 }
 101                 dev = dev->next;
 102         } while (dev != eth_devices);
 103
 104         return target_dev;
 105 }
 106
 107 int eth_get_dev_index (void)
 108 {
 109         struct eth_device *dev;
 110         int num = 0;
 111
 112         if (!eth_devices) {
 113                 return (-1);
 114         }
 115
 116         for (dev = eth_devices; dev; dev = dev->next) {
 117                 if (dev == eth_current)
 118                         break;
 119                 ++num;
 120         }
 121
 122         if (dev) {
 123                 return (num);
 124         }
 125
 126         return (0);
 127 }
 128
 129 int eth_register(struct eth_device* dev)
 130 {
 131         struct eth_device *d;
 132
 133         if (!eth_devices) {
 134                 eth_current = eth_devices = dev;
 135 #ifdef CONFIG_NET_MULTI
 136                 /* update current ethernet name */
 137                 {
 138                         char *act = getenv("ethact");
 139                         if (act == NULL || strcmp(act, eth_current->name) != 0)
 140                                 setenv("ethact", eth_current->name);
 141                 }
 142 #endif
 143         } else {
 144                 for (d=eth_devices; d->next!=eth_devices; d=d->next);
 145                 d->next = dev;
 146         }
 147
 148         dev->state = ETH_STATE_INIT;
 149         dev->next  = eth_devices;
 150
 151         return 0;
 152 }
 153
 154 int eth_initialize(bd_t *bis)
 155 {
 156         char enetvar[32];
 157         unsigned char env_enetaddr[6];
 158         int i, eth_number = 0;
 159         char *tmp, *end;
 160
 161         eth_devices = NULL;
 162         eth_current = NULL;
 163
 164         show_boot_progress (64);
 165 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 166         miiphy_init();
 167 #endif
 168
 169 #if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
 170         mv6436x_eth_initialize(bis);
 171 #endif
 172 #if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
 173         mv6446x_eth_initialize(bis);
 174 #endif
 175 #if defined(CONFIG_4xx) && !defined(CONFIG_IOP480) && !defined(CONFIG_AP1000)
 176         ppc_4xx_eth_initialize(bis);
 177 #endif
 178 #ifdef CONFIG_INCA_IP_SWITCH
 179         inca_switch_initialize(bis);
 180 #endif
 181 #ifdef CONFIG_PLB2800_ETHER
 182         plb2800_eth_initialize(bis);
 183 #endif
 184 #ifdef SCC_ENET
 185         scc_initialize(bis);
 186 #endif
 187 #if defined(CONFIG_MPC5xxx_FEC)
 188         mpc5xxx_fec_initialize(bis);
 189 #endif
 190 #if defined(CONFIG_MPC512x_FEC)
 191         mpc512x_fec_initialize (bis);
 192 #endif
 193 #if defined(CONFIG_MPC8220_FEC)
 194         mpc8220_fec_initialize(bis);
 195 #endif
 196 #if defined(CONFIG_SK98)
 197         skge_initialize(bis);
 198 #endif
 199 #if defined(CONFIG_TSEC1)
 200         tsec_initialize(bis, 0, CONFIG_TSEC1_NAME);
 201 #endif
 202 #if defined(CONFIG_TSEC2)
 203         tsec_initialize(bis, 1, CONFIG_TSEC2_NAME);
 204 #endif
 205 #if defined(CONFIG_MPC85XX_FEC)
 206         tsec_initialize(bis, 2, CONFIG_MPC85XX_FEC_NAME);
 207 #else
 208 #    if defined(CONFIG_TSEC3)
 209         tsec_initialize(bis, 2, CONFIG_TSEC3_NAME);
 210 #    endif
 211 #    if defined(CONFIG_TSEC4)
 212         tsec_initialize(bis, 3, CONFIG_TSEC4_NAME);
 213 #    endif
 214 #endif
 215 #if defined(CONFIG_UEC_ETH1)
 216         uec_initialize(0);
 217 #endif
 218 #if defined(CONFIG_UEC_ETH2)
 219         uec_initialize(1);
 220 #endif
 221 #if defined(CONFIG_UEC_ETH3)
 222         uec_initialize(2);
 223 #endif
 224 #if defined(CONFIG_UEC_ETH4)
 225         uec_initialize(3);
 226 #endif
 227
 228 #if defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FCC)
 229         fec_initialize(bis);
 230 #endif
 231 #if defined(CONFIG_AU1X00)
 232         au1x00_enet_initialize(bis);
 233 #endif
 234 #if defined(CONFIG_IXP4XX_NPE)
 235         npe_initialize(bis);
 236 #endif
 237 #ifdef CONFIG_E1000
 238         e1000_initialize(bis);
 239 #endif
 240 #ifdef CONFIG_EEPRO100
 241         eepro100_initialize(bis);
 242 #endif
 243 #ifdef CONFIG_TULIP
 244         dc21x4x_initialize(bis);
 245 #endif
 246 #ifdef CONFIG_3COM
 247         eth_3com_initialize(bis);
 248 #endif
 249 #ifdef CONFIG_PCNET
 250         pcnet_initialize(bis);
 251 #endif
 252 #ifdef CFG_GT_6426x
 253         gt6426x_eth_initialize(bis);
 254 #endif
 255 #ifdef CONFIG_NATSEMI
 256         natsemi_initialize(bis);
 257 #endif
 258 #ifdef CONFIG_NS8382X
 259         ns8382x_initialize(bis);
 260 #endif
 261 #if defined(CONFIG_TSI108_ETH)
 262         tsi108_eth_initialize(bis);
 263 #endif
 264 #if defined(CONFIG_ULI526X)
 265         uli526x_initialize(bis);
 266 #endif
 267 #if defined(CONFIG_RTL8139)
 268         rtl8139_initialize(bis);
 269 #endif
 270 #if defined(CONFIG_RTL8169)
 271         rtl8169_initialize(bis);
 272 #endif
 273 #if defined(CONFIG_BF537)
 274         bfin_EMAC_initialize(bis);
 275 #endif
 276 #if defined(CONFIG_ATSTK1000)
 277         atstk1000_eth_initialize(bis);
 278 #endif
 279 #if defined(CONFIG_GRETH)
 280         greth_initialize(bis);
 281 #endif
 282 #if defined(CONFIG_ATNGW100)
 283         atngw100_eth_initialize(bis);
 284 #endif
 285 #if defined(CONFIG_MCFFEC)
 286         mcffec_initialize(bis);
 287 #endif
 288 #if defined(CONFIG_FSLDMAFEC)
 289         mcdmafec_initialize(bis);
 290 #endif
 291 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260)
 292         at91sam9_eth_initialize(bis);
 293 #endif
 294
 295         if (!eth_devices) {
 296                 puts ("No ethernet found.\n");
 297                 show_boot_progress (-64);
 298         } else {
 299                 struct eth_device *dev = eth_devices;
 300                 char *ethprime = getenv ("ethprime");
 301
 302                 show_boot_progress (65);
 303                 do {
 304                         if (eth_number)
 305                                 puts (", ");
 306
 307                         printf("%s", dev->name);
 308
 309                         if (ethprime && strcmp (dev->name, ethprime) == 0) {
 310                                 eth_current = dev;
 311                                 puts (" [PRIME]");
 312                         }
 313
 314                         sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
 315                         tmp = getenv (enetvar);
 316
 317                         for (i=0; i<6; i++) {
 318                                 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
 319                                 if (tmp)
 320                                         tmp = (*end) ? end+1 : end;
 321                         }
 322
 323                         if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
 324                                 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
 325                                     memcmp(dev->enetaddr, env_enetaddr, 6))
 326                                 {
 327                                         printf ("\nWarning: %s MAC addresses don't match:\n",
 328                                                 dev->name);
 329                                         printf ("Address in SROM is         "
 330                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 331                                                dev->enetaddr[0], dev->enetaddr[1],
 332                                                dev->enetaddr[2], dev->enetaddr[3],
 333                                                dev->enetaddr[4], dev->enetaddr[5]);
 334                                         printf ("Address in environment is  "
 335                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 336                                                env_enetaddr[0], env_enetaddr[1],
 337                                                env_enetaddr[2], env_enetaddr[3],
 338                                                env_enetaddr[4], env_enetaddr[5]);
 339                                 }
 340
 341                                 memcpy(dev->enetaddr, env_enetaddr, 6);
 342                         }
 343
 344                         eth_number++;
 345                         dev = dev->next;
 346                 } while(dev != eth_devices);
 347
 348 #ifdef CONFIG_NET_MULTI
 349                 /* update current ethernet name */
 350                 if (eth_current) {
 351                         char *act = getenv("ethact");
 352                         if (act == NULL || strcmp(act, eth_current->name) != 0)
 353                                 setenv("ethact", eth_current->name);
 354                 } else
 355                         setenv("ethact", NULL);
 356 #endif
 357
 358                 putc ('\n');
 359         }
 360
 361         return eth_number;
 362 }
 363
 364 void eth_set_enetaddr(int num, char *addr) {
 365         struct eth_device *dev;
 366         unsigned char enetaddr[6];
 367         char *end;
 368         int i;
 369
 370         debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
 371
 372         if (!eth_devices)
 373                 return;
 374
 375         for (i=0; i<6; i++) {
 376                 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
 377                 if (addr)
 378                         addr = (*end) ? end+1 : end;
 379         }
 380
 381         dev = eth_devices;
 382         while(num-- > 0) {
 383                 dev = dev->next;
 384
 385                 if (dev == eth_devices)
 386                         return;
 387         }
 388
 389         debug ( "Setting new HW address on %s\n"
 390                 "New Address is             %02X:%02X:%02X:%02X:%02X:%02X\n",
 391                 dev->name,
 392                 enetaddr[0], enetaddr[1],
 393                 enetaddr[2], enetaddr[3],
 394                 enetaddr[4], enetaddr[5]);
 395
 396         memcpy(dev->enetaddr, enetaddr, 6);
 397 }
 398 #ifdef CONFIG_MCAST_TFTP
 399 /* Multicast.
 400  * mcast_addr: multicast ipaddr from which multicast Mac is made
 401  * join: 1=join, 0=leave.
 402  */
 403 int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
 404 {
 405  u8 mcast_mac[6];
 406         if (!eth_current || !eth_current->mcast)
 407                 return -1;
 408         mcast_mac[5] = htonl(mcast_ip) & 0xff;
 409         mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
 410         mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
 411         mcast_mac[2] = 0x5e;
 412         mcast_mac[1] = 0x0;
 413         mcast_mac[0] = 0x1;
 414         return eth_current->mcast(eth_current, mcast_mac, join);
 415 }
 416
 417 /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
 418  * and this is the ethernet-crc method needed for TSEC -- and perhaps
 419  * some other adapter -- hash tables
 420  */
 421 #define CRCPOLY_LE 0xedb88320
 422 u32 ether_crc (size_t len, unsigned char const *p)
 423 {
 424         int i;
 425         u32 crc;
 426         crc = ~0;
 427         while (len--) {
 428                 crc ^= *p++;
 429                 for (i = 0; i < 8; i++)
 430                         crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
 431         }
 432         /* an reverse the bits, cuz of way they arrive -- last-first */
 433         crc = (crc >> 16) | (crc << 16);
 434         crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
 435         crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
 436         crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
 437         crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
 438         return crc;
 439 }
 440
 441 #endif
 442
 443
 444 int eth_init(bd_t *bis)
 445 {
 446         struct eth_device* old_current;
 447
 448         if (!eth_current) {
 449                 puts ("No ethernet found.\n");
 450                 return -1;
 451         }
 452
 453         old_current = eth_current;
 454         do {
 455                 debug ("Trying %s\n", eth_current->name);
 456
 457                 if (eth_current->init(eth_current,bis) >= 0) {
 458                         eth_current->state = ETH_STATE_ACTIVE;
 459
 460                         return 0;
 461                 }
 462                 debug  ("FAIL\n");
 463
 464                 eth_try_another(0);
 465         } while (old_current != eth_current);
 466
 467         return -1;
 468 }
 469
 470 void eth_halt(void)
 471 {
 472         if (!eth_current)
 473                 return;
 474
 475         eth_current->halt(eth_current);
 476
 477         eth_current->state = ETH_STATE_PASSIVE;
 478 }
 479
 480 int eth_send(volatile void *packet, int length)
 481 {
 482         if (!eth_current)
 483                 return -1;
 484
 485         return eth_current->send(eth_current, packet, length);
 486 }
 487
 488 int eth_rx(void)
 489 {
 490         if (!eth_current)
 491                 return -1;
 492
 493         return eth_current->recv(eth_current);
 494 }
 495
 496 #ifdef CONFIG_API
 497 static void eth_save_packet(volatile void *packet, int length)
 498 {
 499         volatile char *p = packet;
 500         int i;
 501
 502         if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
 503                 return;
 504
 505         if (PKTSIZE < length)
 506                 return;
 507
 508         for (i = 0; i < length; i++)
 509                 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
 510
 511         eth_rcv_bufs[eth_rcv_last].length = length;
 512         eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
 513 }
 514
 515 int eth_receive(volatile void *packet, int length)
 516 {
 517         volatile char *p = packet;
 518         void *pp = push_packet;
 519         int i;
 520
 521         if (eth_rcv_current == eth_rcv_last) {
 522                 push_packet = eth_save_packet;
 523                 eth_rx();
 524                 push_packet = pp;
 525
 526                 if (eth_rcv_current == eth_rcv_last)
 527                         return -1;
 528         }
 529
 530         if (length < eth_rcv_bufs[eth_rcv_current].length)
 531                 return -1;
 532
 533         length = eth_rcv_bufs[eth_rcv_current].length;
 534
 535         for (i = 0; i < length; i++)
 536                 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
 537
 538         eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
 539         return length;
 540 }
 541 #endif /* CONFIG_API */
 542
 543 void eth_try_another(int first_restart)
 544 {
 545         static struct eth_device *first_failed = NULL;
 546         char *ethrotate;
 547
 548         /*
 549          * Do not rotate between network interfaces when
 550          * 'ethrotate' variable is set to 'no'.
 551          */
 552         if (((ethrotate = getenv ("ethrotate")) != NULL) &&
 553             (strcmp(ethrotate, "no") == 0))
 554                 return;
 555
 556         if (!eth_current)
 557                 return;
 558
 559         if (first_restart) {
 560                 first_failed = eth_current;
 561         }
 562
 563         eth_current = eth_current->next;
 564
 565 #ifdef CONFIG_NET_MULTI
 566         /* update current ethernet name */
 567         {
 568                 char *act = getenv("ethact");
 569                 if (act == NULL || strcmp(act, eth_current->name) != 0)
 570                         setenv("ethact", eth_current->name);
 571         }
 572 #endif
 573
 574         if (first_failed == eth_current) {
 575                 NetRestartWrap = 1;
 576         }
 577 }
 578
 579 #ifdef CONFIG_NET_MULTI
 580 void eth_set_current(void)
 581 {
 582         char *act;
 583         struct eth_device* old_current;
 584
 585         if (!eth_current)       /* XXX no current */
 586                 return;
 587
 588         act = getenv("ethact");
 589         if (act != NULL) {
 590                 old_current = eth_current;
 591                 do {
 592                         if (strcmp(eth_current->name, act) == 0)
 593                                 return;
 594                         eth_current = eth_current->next;
 595                 } while (old_current != eth_current);
 596         }
 597
 598         setenv("ethact", eth_current->name);
 599 }
 600 #endif
 601
 602 char *eth_get_name (void)
 603 {
 604         return (eth_current ? eth_current->name : "unknown");
 605 }
 606 #elif defined(CONFIG_CMD_NET) && !defined(CONFIG_NET_MULTI)
 607
 608 extern int at91rm9200_miiphy_initialize(bd_t *bis);
 609 extern int emac4xx_miiphy_initialize(bd_t *bis);
 610 extern int mcf52x2_miiphy_initialize(bd_t *bis);
 611 extern int ns7520_miiphy_initialize(bd_t *bis);
 612 extern int dm644x_eth_miiphy_initialize(bd_t *bis);
 613
 614
 615 int eth_initialize(bd_t *bis)
 616 {
 617 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 618         miiphy_init();
 619 #endif
 620
 621 #if defined(CONFIG_AT91RM9200)
 622         at91rm9200_miiphy_initialize(bis);
 623 #endif
 624 #if defined(CONFIG_4xx) && !defined(CONFIG_IOP480) \
 625         && !defined(CONFIG_AP1000) && !defined(CONFIG_405)
 626         emac4xx_miiphy_initialize(bis);
 627 #endif
 628 #if defined(CONFIG_MCF52x2)
 629         mcf52x2_miiphy_initialize(bis);
 630 #endif
 631 #if defined(CONFIG_NETARM)
 632         ns7520_miiphy_initialize(bis);
 633 #endif
 634 #if defined(CONFIG_DRIVER_TI_EMAC)
 635         dm644x_eth_miiphy_initialize(bis);
 636 #endif
 637         return 0;
 638 }
 639 #endif