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