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 atstk1000_eth_initialize(bd_t *);
  73 extern int greth_initialize(bd_t *);
  74 extern int atngw100_eth_initialize(bd_t *);
  75 extern int mcffec_initialize(bd_t*);
  76 extern int mcdmafec_initialize(bd_t*);
  77 extern int at91sam9_eth_initialize(bd_t *);
  78
  79 #ifdef CONFIG_API
  80 extern void (*push_packet)(volatile void *, int);
  81
  82 static struct {
  83         uchar data[PKTSIZE];
  84         int length;
  85 } eth_rcv_bufs[PKTBUFSRX];
  86
  87 static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
  88 #endif
  89
  90 static struct eth_device *eth_devices, *eth_current;
  91
  92 struct eth_device *eth_get_dev(void)
  93 {
  94         return eth_current;
  95 }
  96
  97 struct eth_device *eth_get_dev_by_name(char *devname)
  98 {
  99         struct eth_device *dev, *target_dev;
 100
 101         if (!eth_devices)
 102                 return NULL;
 103
 104         dev = eth_devices;
 105         target_dev = NULL;
 106         do {
 107                 if (strcmp(devname, dev->name) == 0) {
 108                         target_dev = dev;
 109                         break;
 110                 }
 111                 dev = dev->next;
 112         } while (dev != eth_devices);
 113
 114         return target_dev;
 115 }
 116
 117 int eth_get_dev_index (void)
 118 {
 119         struct eth_device *dev;
 120         int num = 0;
 121
 122         if (!eth_devices) {
 123                 return (-1);
 124         }
 125
 126         for (dev = eth_devices; dev; dev = dev->next) {
 127                 if (dev == eth_current)
 128                         break;
 129                 ++num;
 130         }
 131
 132         if (dev) {
 133                 return (num);
 134         }
 135
 136         return (0);
 137 }
 138
 139 int eth_register(struct eth_device* dev)
 140 {
 141         struct eth_device *d;
 142
 143         if (!eth_devices) {
 144                 eth_current = eth_devices = dev;
 145 #ifdef CONFIG_NET_MULTI
 146                 /* update current ethernet name */
 147                 {
 148                         char *act = getenv("ethact");
 149                         if (act == NULL || strcmp(act, eth_current->name) != 0)
 150                                 setenv("ethact", eth_current->name);
 151                 }
 152 #endif
 153         } else {
 154                 for (d=eth_devices; d->next!=eth_devices; d=d->next);
 155                 d->next = dev;
 156         }
 157
 158         dev->state = ETH_STATE_INIT;
 159         dev->next  = eth_devices;
 160
 161         return 0;
 162 }
 163
 164 int eth_initialize(bd_t *bis)
 165 {
 166         char enetvar[32];
 167         unsigned char env_enetaddr[6];
 168         int i, eth_number = 0;
 169         char *tmp, *end;
 170
 171         eth_devices = NULL;
 172         eth_current = NULL;
 173
 174         show_boot_progress (64);
 175 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 176         miiphy_init();
 177 #endif
 178         /* Try board-specific initialization first.  If it fails or isn't
 179          * present, try the cpu-specific initialization */
 180         if (board_eth_init(bis) < 0)
 181                 cpu_eth_init(bis);
 182
 183 #if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
 184         mv6436x_eth_initialize(bis);
 185 #endif
 186 #if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
 187         mv6446x_eth_initialize(bis);
 188 #endif
 189 #if defined(CONFIG_4xx) && !defined(CONFIG_IOP480) && !defined(CONFIG_AP1000)
 190         ppc_4xx_eth_initialize(bis);
 191 #endif
 192 #ifdef CONFIG_INCA_IP_SWITCH
 193         inca_switch_initialize(bis);
 194 #endif
 195 #ifdef CONFIG_PLB2800_ETHER
 196         plb2800_eth_initialize(bis);
 197 #endif
 198 #ifdef SCC_ENET
 199         scc_initialize(bis);
 200 #endif
 201 #if defined(CONFIG_MPC5xxx_FEC)
 202         mpc5xxx_fec_initialize(bis);
 203 #endif
 204 #if defined(CONFIG_MPC512x_FEC)
 205         mpc512x_fec_initialize (bis);
 206 #endif
 207 #if defined(CONFIG_MPC8220_FEC)
 208         mpc8220_fec_initialize(bis);
 209 #endif
 210 #if defined(CONFIG_SK98)
 211         skge_initialize(bis);
 212 #endif
 213 #if defined(CONFIG_UEC_ETH1)
 214         uec_initialize(0);
 215 #endif
 216 #if defined(CONFIG_UEC_ETH2)
 217         uec_initialize(1);
 218 #endif
 219 #if defined(CONFIG_UEC_ETH3)
 220         uec_initialize(2);
 221 #endif
 222 #if defined(CONFIG_UEC_ETH4)
 223         uec_initialize(3);
 224 #endif
 225
 226 #if defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FCC)
 227         fec_initialize(bis);
 228 #endif
 229 #if defined(CONFIG_AU1X00)
 230         au1x00_enet_initialize(bis);
 231 #endif
 232 #if defined(CONFIG_IXP4XX_NPE)
 233         npe_initialize(bis);
 234 #endif
 235 #ifdef CONFIG_E1000
 236         e1000_initialize(bis);
 237 #endif
 238 #ifdef CONFIG_EEPRO100
 239         eepro100_initialize(bis);
 240 #endif
 241 #ifdef CONFIG_TULIP
 242         dc21x4x_initialize(bis);
 243 #endif
 244 #ifdef CONFIG_3COM
 245         eth_3com_initialize(bis);
 246 #endif
 247 #ifdef CONFIG_PCNET
 248         pcnet_initialize(bis);
 249 #endif
 250 #ifdef CFG_GT_6426x
 251         gt6426x_eth_initialize(bis);
 252 #endif
 253 #ifdef CONFIG_NATSEMI
 254         natsemi_initialize(bis);
 255 #endif
 256 #ifdef CONFIG_NS8382X
 257         ns8382x_initialize(bis);
 258 #endif
 259 #if defined(CONFIG_TSI108_ETH)
 260         tsi108_eth_initialize(bis);
 261 #endif
 262 #if defined(CONFIG_ULI526X)
 263         uli526x_initialize(bis);
 264 #endif
 265 #if defined(CONFIG_RTL8139)
 266         rtl8139_initialize(bis);
 267 #endif
 268 #if defined(CONFIG_RTL8169)
 269         rtl8169_initialize(bis);
 270 #endif
 271 #if defined(CONFIG_BF537)
 272         bfin_EMAC_initialize(bis);
 273 #endif
 274 #if defined(CONFIG_ATSTK1000)
 275         atstk1000_eth_initialize(bis);
 276 #endif
 277 #if defined(CONFIG_GRETH)
 278         greth_initialize(bis);
 279 #endif
 280 #if defined(CONFIG_ATNGW100)
 281         atngw100_eth_initialize(bis);
 282 #endif
 283 #if defined(CONFIG_MCFFEC)
 284         mcffec_initialize(bis);
 285 #endif
 286 #if defined(CONFIG_FSLDMAFEC)
 287         mcdmafec_initialize(bis);
 288 #endif
 289 #if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
 290     defined(CONFIG_AT91SAM9263)
 291         at91sam9_eth_initialize(bis);
 292 #endif
 293
 294         if (!eth_devices) {
 295                 puts ("No ethernet found.\n");
 296                 show_boot_progress (-64);
 297         } else {
 298                 struct eth_device *dev = eth_devices;
 299                 char *ethprime = getenv ("ethprime");
 300
 301                 show_boot_progress (65);
 302                 do {
 303                         if (eth_number)
 304                                 puts (", ");
 305
 306                         printf("%s", dev->name);
 307
 308                         if (ethprime && strcmp (dev->name, ethprime) == 0) {
 309                                 eth_current = dev;
 310                                 puts (" [PRIME]");
 311                         }
 312
 313                         sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
 314                         tmp = getenv (enetvar);
 315
 316                         for (i=0; i<6; i++) {
 317                                 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
 318                                 if (tmp)
 319                                         tmp = (*end) ? end+1 : end;
 320                         }
 321
 322                         if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
 323                                 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
 324                                     memcmp(dev->enetaddr, env_enetaddr, 6))
 325                                 {
 326                                         printf ("\nWarning: %s MAC addresses don't match:\n",
 327                                                 dev->name);
 328                                         printf ("Address in SROM is         "
 329                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 330                                                dev->enetaddr[0], dev->enetaddr[1],
 331                                                dev->enetaddr[2], dev->enetaddr[3],
 332                                                dev->enetaddr[4], dev->enetaddr[5]);
 333                                         printf ("Address in environment is  "
 334                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 335                                                env_enetaddr[0], env_enetaddr[1],
 336                                                env_enetaddr[2], env_enetaddr[3],
 337                                                env_enetaddr[4], env_enetaddr[5]);
 338                                 }
 339
 340                                 memcpy(dev->enetaddr, env_enetaddr, 6);
 341                         }
 342
 343                         eth_number++;
 344                         dev = dev->next;
 345                 } while(dev != eth_devices);
 346
 347 #ifdef CONFIG_NET_MULTI
 348                 /* update current ethernet name */
 349                 if (eth_current) {
 350                         char *act = getenv("ethact");
 351                         if (act == NULL || strcmp(act, eth_current->name) != 0)
 352                                 setenv("ethact", eth_current->name);
 353                 } else
 354                         setenv("ethact", NULL);
 355 #endif
 356
 357                 putc ('\n');
 358         }
 359
 360         return eth_number;
 361 }
 362
 363 void eth_set_enetaddr(int num, char *addr) {
 364         struct eth_device *dev;
 365         unsigned char enetaddr[6];
 366         char *end;
 367         int i;
 368
 369         debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
 370
 371         if (!eth_devices)
 372                 return;
 373
 374         for (i=0; i<6; i++) {
 375                 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
 376                 if (addr)
 377                         addr = (*end) ? end+1 : end;
 378         }
 379
 380         dev = eth_devices;
 381         while(num-- > 0) {
 382                 dev = dev->next;
 383
 384                 if (dev == eth_devices)
 385                         return;
 386         }
 387
 388         debug ( "Setting new HW address on %s\n"
 389                 "New Address is             %02X:%02X:%02X:%02X:%02X:%02X\n",
 390                 dev->name,
 391                 enetaddr[0], enetaddr[1],
 392                 enetaddr[2], enetaddr[3],
 393                 enetaddr[4], enetaddr[5]);
 394
 395         memcpy(dev->enetaddr, enetaddr, 6);
 396 }
 397 #ifdef CONFIG_MCAST_TFTP
 398 /* Multicast.
 399  * mcast_addr: multicast ipaddr from which multicast Mac is made
 400  * join: 1=join, 0=leave.
 401  */
 402 int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
 403 {
 404  u8 mcast_mac[6];
 405         if (!eth_current || !eth_current->mcast)
 406                 return -1;
 407         mcast_mac[5] = htonl(mcast_ip) & 0xff;
 408         mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
 409         mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
 410         mcast_mac[2] = 0x5e;
 411         mcast_mac[1] = 0x0;
 412         mcast_mac[0] = 0x1;
 413         return eth_current->mcast(eth_current, mcast_mac, join);
 414 }
 415
 416 /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
 417  * and this is the ethernet-crc method needed for TSEC -- and perhaps
 418  * some other adapter -- hash tables
 419  */
 420 #define CRCPOLY_LE 0xedb88320
 421 u32 ether_crc (size_t len, unsigned char const *p)
 422 {
 423         int i;
 424         u32 crc;
 425         crc = ~0;
 426         while (len--) {
 427                 crc ^= *p++;
 428                 for (i = 0; i < 8; i++)
 429                         crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
 430         }
 431         /* an reverse the bits, cuz of way they arrive -- last-first */
 432         crc = (crc >> 16) | (crc << 16);
 433         crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
 434         crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
 435         crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
 436         crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
 437         return crc;
 438 }
 439
 440 #endif
 441
 442
 443 int eth_init(bd_t *bis)
 444 {
 445         struct eth_device* old_current;
 446
 447         if (!eth_current) {
 448                 puts ("No ethernet found.\n");
 449                 return -1;
 450         }
 451
 452         old_current = eth_current;
 453         do {
 454                 debug ("Trying %s\n", eth_current->name);
 455
 456                 if (eth_current->init(eth_current,bis) >= 0) {
 457                         eth_current->state = ETH_STATE_ACTIVE;
 458
 459                         return 0;
 460                 }
 461                 debug  ("FAIL\n");
 462
 463                 eth_try_another(0);
 464         } while (old_current != eth_current);
 465
 466         return -1;
 467 }
 468
 469 void eth_halt(void)
 470 {
 471         if (!eth_current)
 472                 return;
 473
 474         eth_current->halt(eth_current);
 475
 476         eth_current->state = ETH_STATE_PASSIVE;
 477 }
 478
 479 int eth_send(volatile void *packet, int length)
 480 {
 481         if (!eth_current)
 482                 return -1;
 483
 484         return eth_current->send(eth_current, packet, length);
 485 }
 486
 487 int eth_rx(void)
 488 {
 489         if (!eth_current)
 490                 return -1;
 491
 492         return eth_current->recv(eth_current);
 493 }
 494
 495 #ifdef CONFIG_API
 496 static void eth_save_packet(volatile void *packet, int length)
 497 {
 498         volatile char *p = packet;
 499         int i;
 500
 501         if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
 502                 return;
 503
 504         if (PKTSIZE < length)
 505                 return;
 506
 507         for (i = 0; i < length; i++)
 508                 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
 509
 510         eth_rcv_bufs[eth_rcv_last].length = length;
 511         eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
 512 }
 513
 514 int eth_receive(volatile void *packet, int length)
 515 {
 516         volatile char *p = packet;
 517         void *pp = push_packet;
 518         int i;
 519
 520         if (eth_rcv_current == eth_rcv_last) {
 521                 push_packet = eth_save_packet;
 522                 eth_rx();
 523                 push_packet = pp;
 524
 525                 if (eth_rcv_current == eth_rcv_last)
 526                         return -1;
 527         }
 528
 529         if (length < eth_rcv_bufs[eth_rcv_current].length)
 530                 return -1;
 531
 532         length = eth_rcv_bufs[eth_rcv_current].length;
 533
 534         for (i = 0; i < length; i++)
 535                 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
 536
 537         eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
 538         return length;
 539 }
 540 #endif /* CONFIG_API */
 541
 542 void eth_try_another(int first_restart)
 543 {
 544         static struct eth_device *first_failed = NULL;
 545         char *ethrotate;
 546
 547         /*
 548          * Do not rotate between network interfaces when
 549          * 'ethrotate' variable is set to 'no'.
 550          */
 551         if (((ethrotate = getenv ("ethrotate")) != NULL) &&
 552             (strcmp(ethrotate, "no") == 0))
 553                 return;
 554
 555         if (!eth_current)
 556                 return;
 557
 558         if (first_restart) {
 559                 first_failed = eth_current;
 560         }
 561
 562         eth_current = eth_current->next;
 563
 564 #ifdef CONFIG_NET_MULTI
 565         /* update current ethernet name */
 566         {
 567                 char *act = getenv("ethact");
 568                 if (act == NULL || strcmp(act, eth_current->name) != 0)
 569                         setenv("ethact", eth_current->name);
 570         }
 571 #endif
 572
 573         if (first_failed == eth_current) {
 574                 NetRestartWrap = 1;
 575         }
 576 }
 577
 578 #ifdef CONFIG_NET_MULTI
 579 void eth_set_current(void)
 580 {
 581         char *act;
 582         struct eth_device* old_current;
 583
 584         if (!eth_current)       /* XXX no current */
 585                 return;
 586
 587         act = getenv("ethact");
 588         if (act != NULL) {
 589                 old_current = eth_current;
 590                 do {
 591                         if (strcmp(eth_current->name, act) == 0)
 592                                 return;
 593                         eth_current = eth_current->next;
 594                 } while (old_current != eth_current);
 595         }
 596
 597         setenv("ethact", eth_current->name);
 598 }
 599 #endif
 600
 601 char *eth_get_name (void)
 602 {
 603         return (eth_current ? eth_current->name : "unknown");
 604 }
 605 #elif defined(CONFIG_CMD_NET) && !defined(CONFIG_NET_MULTI)
 606
 607 extern int at91rm9200_miiphy_initialize(bd_t *bis);
 608 extern int emac4xx_miiphy_initialize(bd_t *bis);
 609 extern int mcf52x2_miiphy_initialize(bd_t *bis);
 610 extern int ns7520_miiphy_initialize(bd_t *bis);
 611 extern int dm644x_eth_miiphy_initialize(bd_t *bis);
 612
 613
 614 int eth_initialize(bd_t *bis)
 615 {
 616 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 617         miiphy_init();
 618 #endif
 619
 620 #if defined(CONFIG_AT91RM9200)
 621         at91rm9200_miiphy_initialize(bis);
 622 #endif
 623 #if defined(CONFIG_4xx) && !defined(CONFIG_IOP480) \
 624         && !defined(CONFIG_AP1000) && !defined(CONFIG_405)
 625         emac4xx_miiphy_initialize(bis);
 626 #endif
 627 #if defined(CONFIG_MCF52x2)
 628         mcf52x2_miiphy_initialize(bis);
 629 #endif
 630 #if defined(CONFIG_DRIVER_NS7520_ETHERNET)
 631         ns7520_miiphy_initialize(bis);
 632 #endif
 633 #if defined(CONFIG_DRIVER_TI_EMAC)
 634         dm644x_eth_miiphy_initialize(bis);
 635 #endif
 636         return 0;
 637 }
 638 #endif