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];
 153         unsigned char env_enetaddr[6];
 154         int i, eth_number = 0;
 155         char *tmp, *end;
 156
 157         eth_devices = NULL;
 158         eth_current = NULL;
 159
 160         show_boot_progress (64);
 161 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 162         miiphy_init();
 163 #endif
 164
 165 #if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
 166         mv6436x_eth_initialize(bis);
 167 #endif
 168 #if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
 169         mv6446x_eth_initialize(bis);
 170 #endif
 171 #if defined(CONFIG_4xx) && !defined(CONFIG_IOP480) && !defined(CONFIG_AP1000)
 172         ppc_4xx_eth_initialize(bis);
 173 #endif
 174 #ifdef CONFIG_INCA_IP_SWITCH
 175         inca_switch_initialize(bis);
 176 #endif
 177 #ifdef CONFIG_PLB2800_ETHER
 178         plb2800_eth_initialize(bis);
 179 #endif
 180 #ifdef SCC_ENET
 181         scc_initialize(bis);
 182 #endif
 183 #if defined(CONFIG_MPC5xxx_FEC)
 184         mpc5xxx_fec_initialize(bis);
 185 #endif
 186 #if defined(CONFIG_MPC512x_FEC)
 187         mpc512x_fec_initialize (bis);
 188 #endif
 189 #if defined(CONFIG_MPC8220_FEC)
 190         mpc8220_fec_initialize(bis);
 191 #endif
 192 #if defined(CONFIG_SK98)
 193         skge_initialize(bis);
 194 #endif
 195 #if defined(CONFIG_TSEC1)
 196         tsec_initialize(bis, 0, CONFIG_TSEC1_NAME);
 197 #endif
 198 #if defined(CONFIG_TSEC2)
 199         tsec_initialize(bis, 1, CONFIG_TSEC2_NAME);
 200 #endif
 201 #if defined(CONFIG_MPC85XX_FEC)
 202         tsec_initialize(bis, 2, CONFIG_MPC85XX_FEC_NAME);
 203 #else
 204 #    if defined(CONFIG_TSEC3)
 205         tsec_initialize(bis, 2, CONFIG_TSEC3_NAME);
 206 #    endif
 207 #    if defined(CONFIG_TSEC4)
 208         tsec_initialize(bis, 3, CONFIG_TSEC4_NAME);
 209 #    endif
 210 #endif
 211 #if defined(CONFIG_UEC_ETH1)
 212         uec_initialize(0);
 213 #endif
 214 #if defined(CONFIG_UEC_ETH2)
 215         uec_initialize(1);
 216 #endif
 217
 218 #if defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FCC)
 219         fec_initialize(bis);
 220 #endif
 221 #if defined(CONFIG_AU1X00)
 222         au1x00_enet_initialize(bis);
 223 #endif
 224 #if defined(CONFIG_IXP4XX_NPE)
 225         npe_initialize(bis);
 226 #endif
 227 #ifdef CONFIG_E1000
 228         e1000_initialize(bis);
 229 #endif
 230 #ifdef CONFIG_EEPRO100
 231         eepro100_initialize(bis);
 232 #endif
 233 #ifdef CONFIG_TULIP
 234         dc21x4x_initialize(bis);
 235 #endif
 236 #ifdef CONFIG_3COM
 237         eth_3com_initialize(bis);
 238 #endif
 239 #ifdef CONFIG_PCNET
 240         pcnet_initialize(bis);
 241 #endif
 242 #ifdef CFG_GT_6426x
 243         gt6426x_eth_initialize(bis);
 244 #endif
 245 #ifdef CONFIG_NATSEMI
 246         natsemi_initialize(bis);
 247 #endif
 248 #ifdef CONFIG_NS8382X
 249         ns8382x_initialize(bis);
 250 #endif
 251 #if defined(CONFIG_TSI108_ETH)
 252         tsi108_eth_initialize(bis);
 253 #endif
 254 #if defined(CONFIG_ULI526X)
 255         uli526x_initialize(bis);
 256 #endif
 257 #if defined(CONFIG_RTL8139)
 258         rtl8139_initialize(bis);
 259 #endif
 260 #if defined(CONFIG_RTL8169)
 261         rtl8169_initialize(bis);
 262 #endif
 263 #if defined(CONFIG_BF537)
 264         bfin_EMAC_initialize(bis);
 265 #endif
 266 #if defined(CONFIG_ATSTK1000)
 267         atstk1000_eth_initialize(bis);
 268 #endif
 269 #if defined(CONFIG_MCFFEC)
 270         mcffec_initialize(bis);
 271 #endif
 272
 273         if (!eth_devices) {
 274                 puts ("No ethernet found.\n");
 275                 show_boot_progress (-64);
 276         } else {
 277                 struct eth_device *dev = eth_devices;
 278                 char *ethprime = getenv ("ethprime");
 279
 280                 show_boot_progress (65);
 281                 do {
 282                         if (eth_number)
 283                                 puts (", ");
 284
 285                         printf("%s", dev->name);
 286
 287                         if (ethprime && strcmp (dev->name, ethprime) == 0) {
 288                                 eth_current = dev;
 289                                 puts (" [PRIME]");
 290                         }
 291
 292                         sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
 293                         tmp = getenv (enetvar);
 294
 295                         for (i=0; i<6; i++) {
 296                                 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
 297                                 if (tmp)
 298                                         tmp = (*end) ? end+1 : end;
 299                         }
 300
 301                         if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
 302                                 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
 303                                     memcmp(dev->enetaddr, env_enetaddr, 6))
 304                                 {
 305                                         printf ("\nWarning: %s MAC addresses don't match:\n",
 306                                                 dev->name);
 307                                         printf ("Address in SROM is         "
 308                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 309                                                dev->enetaddr[0], dev->enetaddr[1],
 310                                                dev->enetaddr[2], dev->enetaddr[3],
 311                                                dev->enetaddr[4], dev->enetaddr[5]);
 312                                         printf ("Address in environment is  "
 313                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 314                                                env_enetaddr[0], env_enetaddr[1],
 315                                                env_enetaddr[2], env_enetaddr[3],
 316                                                env_enetaddr[4], env_enetaddr[5]);
 317                                 }
 318
 319                                 memcpy(dev->enetaddr, env_enetaddr, 6);
 320                         }
 321
 322                         eth_number++;
 323                         dev = dev->next;
 324                 } while(dev != eth_devices);
 325
 326 #ifdef CONFIG_NET_MULTI
 327                 /* update current ethernet name */
 328                 if (eth_current) {
 329                         char *act = getenv("ethact");
 330                         if (act == NULL || strcmp(act, eth_current->name) != 0)
 331                                 setenv("ethact", eth_current->name);
 332                 } else
 333                         setenv("ethact", NULL);
 334 #endif
 335
 336                 putc ('\n');
 337         }
 338
 339         return eth_number;
 340 }
 341
 342 void eth_set_enetaddr(int num, char *addr) {
 343         struct eth_device *dev;
 344         unsigned char enetaddr[6];
 345         char *end;
 346         int i;
 347
 348         debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
 349
 350         if (!eth_devices)
 351                 return;
 352
 353         for (i=0; i<6; i++) {
 354                 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
 355                 if (addr)
 356                         addr = (*end) ? end+1 : end;
 357         }
 358
 359         dev = eth_devices;
 360         while(num-- > 0) {
 361                 dev = dev->next;
 362
 363                 if (dev == eth_devices)
 364                         return;
 365         }
 366
 367         debug ( "Setting new HW address on %s\n"
 368                 "New Address is             %02X:%02X:%02X:%02X:%02X:%02X\n",
 369                 dev->name,
 370                 enetaddr[0], enetaddr[1],
 371                 enetaddr[2], enetaddr[3],
 372                 enetaddr[4], enetaddr[5]);
 373
 374         memcpy(dev->enetaddr, enetaddr, 6);
 375 }
 376 #ifdef CONFIG_MCAST_TFTP
 377 /* Multicast.
 378  * mcast_addr: multicast ipaddr from which multicast Mac is made
 379  * join: 1=join, 0=leave.
 380  */
 381 int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
 382 {
 383  u8 mcast_mac[6];
 384         if (!eth_current || !eth_current->mcast)
 385                 return -1;
 386         mcast_mac[5] = htonl(mcast_ip) & 0xff;
 387         mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
 388         mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
 389         mcast_mac[2] = 0x5e;
 390         mcast_mac[1] = 0x0;
 391         mcast_mac[0] = 0x1;
 392         return eth_current->mcast(eth_current, mcast_mac, join);
 393 }
 394
 395 /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
 396  * and this is the ethernet-crc method needed for TSEC -- and perhaps
 397  * some other adapter -- hash tables
 398  */
 399 #define CRCPOLY_LE 0xedb88320
 400 u32 ether_crc (size_t len, unsigned char const *p)
 401 {
 402         int i;
 403         u32 crc;
 404         crc = ~0;
 405         while (len--) {
 406                 crc ^= *p++;
 407                 for (i = 0; i < 8; i++)
 408                         crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
 409         }
 410         /* an reverse the bits, cuz of way they arrive -- last-first */
 411         crc = (crc >> 16) | (crc << 16);
 412         crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
 413         crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
 414         crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
 415         crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
 416         return crc;
 417 }
 418
 419 #endif
 420
 421
 422 int eth_init(bd_t *bis)
 423 {
 424         struct eth_device* old_current;
 425
 426         if (!eth_current)
 427                 return -1;
 428
 429         old_current = eth_current;
 430         do {
 431                 debug ("Trying %s\n", eth_current->name);
 432
 433                 if (!eth_current->init(eth_current,bis)) {
 434                         eth_current->state = ETH_STATE_ACTIVE;
 435
 436                         return 0;
 437                 }
 438                 debug  ("FAIL\n");
 439
 440                 eth_try_another(0);
 441         } while (old_current != eth_current);
 442
 443         return -1;
 444 }
 445
 446 void eth_halt(void)
 447 {
 448         if (!eth_current)
 449                 return;
 450
 451         eth_current->halt(eth_current);
 452
 453         eth_current->state = ETH_STATE_PASSIVE;
 454 }
 455
 456 int eth_send(volatile void *packet, int length)
 457 {
 458         if (!eth_current)
 459                 return -1;
 460
 461         return eth_current->send(eth_current, packet, length);
 462 }
 463
 464 int eth_rx(void)
 465 {
 466         if (!eth_current)
 467                 return -1;
 468
 469         return eth_current->recv(eth_current);
 470 }
 471
 472 #ifdef CONFIG_API
 473 static void eth_save_packet(volatile void *packet, int length)
 474 {
 475         volatile char *p = packet;
 476         int i;
 477
 478         if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
 479                 return;
 480
 481         if (PKTSIZE < length)
 482                 return;
 483
 484         for (i = 0; i < length; i++)
 485                 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
 486
 487         eth_rcv_bufs[eth_rcv_last].length = length;
 488         eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
 489 }
 490
 491 int eth_receive(volatile void *packet, int length)
 492 {
 493         volatile char *p = packet;
 494         void *pp = push_packet;
 495         int i;
 496
 497         if (eth_rcv_current == eth_rcv_last) {
 498                 push_packet = eth_save_packet;
 499                 eth_rx();
 500                 push_packet = pp;
 501
 502                 if (eth_rcv_current == eth_rcv_last)
 503                         return -1;
 504         }
 505
 506         if (length < eth_rcv_bufs[eth_rcv_current].length)
 507                 return -1;
 508
 509         length = eth_rcv_bufs[eth_rcv_current].length;
 510
 511         for (i = 0; i < length; i++)
 512                 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
 513
 514         eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
 515         return length;
 516 }
 517 #endif /* CONFIG_API */
 518
 519 void eth_try_another(int first_restart)
 520 {
 521         static struct eth_device *first_failed = NULL;
 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_NETARM)
 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