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 atngw100_eth_initialize(bd_t *);
  64 extern int mcffec_initialize(bd_t*);
  65 extern int mcdmafec_initialize(bd_t*);
  66 extern int at91cap9_eth_initialize(bd_t *);
  67
  68 #ifdef CONFIG_API
  69 extern void (*push_packet)(volatile void *, int);
  70
  71 static struct {
  72         uchar data[PKTSIZE];
  73         int length;
  74 } eth_rcv_bufs[PKTBUFSRX];
  75
  76 static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
  77 #endif
  78
  79 static struct eth_device *eth_devices, *eth_current;
  80
  81 struct eth_device *eth_get_dev(void)
  82 {
  83         return eth_current;
  84 }
  85
  86 struct eth_device *eth_get_dev_by_name(char *devname)
  87 {
  88         struct eth_device *dev, *target_dev;
  89
  90         if (!eth_devices)
  91                 return NULL;
  92
  93         dev = eth_devices;
  94         target_dev = NULL;
  95         do {
  96                 if (strcmp(devname, dev->name) == 0) {
  97                         target_dev = dev;
  98                         break;
  99                 }
 100                 dev = dev->next;
 101         } while (dev != eth_devices);
 102
 103         return target_dev;
 104 }
 105
 106 int eth_get_dev_index (void)
 107 {
 108         struct eth_device *dev;
 109         int num = 0;
 110
 111         if (!eth_devices) {
 112                 return (-1);
 113         }
 114
 115         for (dev = eth_devices; dev; dev = dev->next) {
 116                 if (dev == eth_current)
 117                         break;
 118                 ++num;
 119         }
 120
 121         if (dev) {
 122                 return (num);
 123         }
 124
 125         return (0);
 126 }
 127
 128 int eth_register(struct eth_device* dev)
 129 {
 130         struct eth_device *d;
 131
 132         if (!eth_devices) {
 133                 eth_current = eth_devices = dev;
 134 #ifdef CONFIG_NET_MULTI
 135                 /* update current ethernet name */
 136                 {
 137                         char *act = getenv("ethact");
 138                         if (act == NULL || strcmp(act, eth_current->name) != 0)
 139                                 setenv("ethact", eth_current->name);
 140                 }
 141 #endif
 142         } else {
 143                 for (d=eth_devices; d->next!=eth_devices; d=d->next);
 144                 d->next = dev;
 145         }
 146
 147         dev->state = ETH_STATE_INIT;
 148         dev->next  = eth_devices;
 149
 150         return 0;
 151 }
 152
 153 int eth_initialize(bd_t *bis)
 154 {
 155         char enetvar[32];
 156         unsigned char env_enetaddr[6];
 157         int i, eth_number = 0;
 158         char *tmp, *end;
 159
 160         eth_devices = NULL;
 161         eth_current = NULL;
 162
 163         show_boot_progress (64);
 164 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 165         miiphy_init();
 166 #endif
 167
 168 #if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
 169         mv6436x_eth_initialize(bis);
 170 #endif
 171 #if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
 172         mv6446x_eth_initialize(bis);
 173 #endif
 174 #if defined(CONFIG_4xx) && !defined(CONFIG_IOP480) && !defined(CONFIG_AP1000)
 175         ppc_4xx_eth_initialize(bis);
 176 #endif
 177 #ifdef CONFIG_INCA_IP_SWITCH
 178         inca_switch_initialize(bis);
 179 #endif
 180 #ifdef CONFIG_PLB2800_ETHER
 181         plb2800_eth_initialize(bis);
 182 #endif
 183 #ifdef SCC_ENET
 184         scc_initialize(bis);
 185 #endif
 186 #if defined(CONFIG_MPC5xxx_FEC)
 187         mpc5xxx_fec_initialize(bis);
 188 #endif
 189 #if defined(CONFIG_MPC512x_FEC)
 190         mpc512x_fec_initialize (bis);
 191 #endif
 192 #if defined(CONFIG_MPC8220_FEC)
 193         mpc8220_fec_initialize(bis);
 194 #endif
 195 #if defined(CONFIG_SK98)
 196         skge_initialize(bis);
 197 #endif
 198 #if defined(CONFIG_TSEC1)
 199         tsec_initialize(bis, 0, CONFIG_TSEC1_NAME);
 200 #endif
 201 #if defined(CONFIG_TSEC2)
 202         tsec_initialize(bis, 1, CONFIG_TSEC2_NAME);
 203 #endif
 204 #if defined(CONFIG_MPC85XX_FEC)
 205         tsec_initialize(bis, 2, CONFIG_MPC85XX_FEC_NAME);
 206 #else
 207 #    if defined(CONFIG_TSEC3)
 208         tsec_initialize(bis, 2, CONFIG_TSEC3_NAME);
 209 #    endif
 210 #    if defined(CONFIG_TSEC4)
 211         tsec_initialize(bis, 3, CONFIG_TSEC4_NAME);
 212 #    endif
 213 #endif
 214 #if defined(CONFIG_UEC_ETH1)
 215         uec_initialize(0);
 216 #endif
 217 #if defined(CONFIG_UEC_ETH2)
 218         uec_initialize(1);
 219 #endif
 220 #if defined(CONFIG_UEC_ETH3)
 221         uec_initialize(2);
 222 #endif
 223 #if defined(CONFIG_UEC_ETH4)
 224         uec_initialize(3);
 225 #endif
 226
 227 #if defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FCC)
 228         fec_initialize(bis);
 229 #endif
 230 #if defined(CONFIG_AU1X00)
 231         au1x00_enet_initialize(bis);
 232 #endif
 233 #if defined(CONFIG_IXP4XX_NPE)
 234         npe_initialize(bis);
 235 #endif
 236 #ifdef CONFIG_E1000
 237         e1000_initialize(bis);
 238 #endif
 239 #ifdef CONFIG_EEPRO100
 240         eepro100_initialize(bis);
 241 #endif
 242 #ifdef CONFIG_TULIP
 243         dc21x4x_initialize(bis);
 244 #endif
 245 #ifdef CONFIG_3COM
 246         eth_3com_initialize(bis);
 247 #endif
 248 #ifdef CONFIG_PCNET
 249         pcnet_initialize(bis);
 250 #endif
 251 #ifdef CFG_GT_6426x
 252         gt6426x_eth_initialize(bis);
 253 #endif
 254 #ifdef CONFIG_NATSEMI
 255         natsemi_initialize(bis);
 256 #endif
 257 #ifdef CONFIG_NS8382X
 258         ns8382x_initialize(bis);
 259 #endif
 260 #if defined(CONFIG_TSI108_ETH)
 261         tsi108_eth_initialize(bis);
 262 #endif
 263 #if defined(CONFIG_ULI526X)
 264         uli526x_initialize(bis);
 265 #endif
 266 #if defined(CONFIG_RTL8139)
 267         rtl8139_initialize(bis);
 268 #endif
 269 #if defined(CONFIG_RTL8169)
 270         rtl8169_initialize(bis);
 271 #endif
 272 #if defined(CONFIG_BF537)
 273         bfin_EMAC_initialize(bis);
 274 #endif
 275 #if defined(CONFIG_ATSTK1000)
 276         atstk1000_eth_initialize(bis);
 277 #endif
 278 #if defined(CONFIG_ATNGW100)
 279         atngw100_eth_initialize(bis);
 280 #endif
 281 #if defined(CONFIG_MCFFEC)
 282         mcffec_initialize(bis);
 283 #endif
 284 #if defined(CONFIG_FSLDMAFEC)
 285         mcdmafec_initialize(bis);
 286 #endif
 287 #if defined(CONFIG_AT91CAP9)
 288         at91cap9_eth_initialize(bis);
 289 #endif
 290
 291         if (!eth_devices) {
 292                 puts ("No ethernet found.\n");
 293                 show_boot_progress (-64);
 294         } else {
 295                 struct eth_device *dev = eth_devices;
 296                 char *ethprime = getenv ("ethprime");
 297
 298                 show_boot_progress (65);
 299                 do {
 300                         if (eth_number)
 301                                 puts (", ");
 302
 303                         printf("%s", dev->name);
 304
 305                         if (ethprime && strcmp (dev->name, ethprime) == 0) {
 306                                 eth_current = dev;
 307                                 puts (" [PRIME]");
 308                         }
 309
 310                         sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
 311                         tmp = getenv (enetvar);
 312
 313                         for (i=0; i<6; i++) {
 314                                 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
 315                                 if (tmp)
 316                                         tmp = (*end) ? end+1 : end;
 317                         }
 318
 319                         if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
 320                                 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
 321                                     memcmp(dev->enetaddr, env_enetaddr, 6))
 322                                 {
 323                                         printf ("\nWarning: %s MAC addresses don't match:\n",
 324                                                 dev->name);
 325                                         printf ("Address in SROM is         "
 326                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 327                                                dev->enetaddr[0], dev->enetaddr[1],
 328                                                dev->enetaddr[2], dev->enetaddr[3],
 329                                                dev->enetaddr[4], dev->enetaddr[5]);
 330                                         printf ("Address in environment is  "
 331                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 332                                                env_enetaddr[0], env_enetaddr[1],
 333                                                env_enetaddr[2], env_enetaddr[3],
 334                                                env_enetaddr[4], env_enetaddr[5]);
 335                                 }
 336
 337                                 memcpy(dev->enetaddr, env_enetaddr, 6);
 338                         }
 339
 340                         eth_number++;
 341                         dev = dev->next;
 342                 } while(dev != eth_devices);
 343
 344 #ifdef CONFIG_NET_MULTI
 345                 /* update current ethernet name */
 346                 if (eth_current) {
 347                         char *act = getenv("ethact");
 348                         if (act == NULL || strcmp(act, eth_current->name) != 0)
 349                                 setenv("ethact", eth_current->name);
 350                 } else
 351                         setenv("ethact", NULL);
 352 #endif
 353
 354                 putc ('\n');
 355         }
 356
 357         return eth_number;
 358 }
 359
 360 void eth_set_enetaddr(int num, char *addr) {
 361         struct eth_device *dev;
 362         unsigned char enetaddr[6];
 363         char *end;
 364         int i;
 365
 366         debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
 367
 368         if (!eth_devices)
 369                 return;
 370
 371         for (i=0; i<6; i++) {
 372                 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
 373                 if (addr)
 374                         addr = (*end) ? end+1 : end;
 375         }
 376
 377         dev = eth_devices;
 378         while(num-- > 0) {
 379                 dev = dev->next;
 380
 381                 if (dev == eth_devices)
 382                         return;
 383         }
 384
 385         debug ( "Setting new HW address on %s\n"
 386                 "New Address is             %02X:%02X:%02X:%02X:%02X:%02X\n",
 387                 dev->name,
 388                 enetaddr[0], enetaddr[1],
 389                 enetaddr[2], enetaddr[3],
 390                 enetaddr[4], enetaddr[5]);
 391
 392         memcpy(dev->enetaddr, enetaddr, 6);
 393 }
 394 #ifdef CONFIG_MCAST_TFTP
 395 /* Multicast.
 396  * mcast_addr: multicast ipaddr from which multicast Mac is made
 397  * join: 1=join, 0=leave.
 398  */
 399 int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
 400 {
 401  u8 mcast_mac[6];
 402         if (!eth_current || !eth_current->mcast)
 403                 return -1;
 404         mcast_mac[5] = htonl(mcast_ip) & 0xff;
 405         mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
 406         mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
 407         mcast_mac[2] = 0x5e;
 408         mcast_mac[1] = 0x0;
 409         mcast_mac[0] = 0x1;
 410         return eth_current->mcast(eth_current, mcast_mac, join);
 411 }
 412
 413 /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
 414  * and this is the ethernet-crc method needed for TSEC -- and perhaps
 415  * some other adapter -- hash tables
 416  */
 417 #define CRCPOLY_LE 0xedb88320
 418 u32 ether_crc (size_t len, unsigned char const *p)
 419 {
 420         int i;
 421         u32 crc;
 422         crc = ~0;
 423         while (len--) {
 424                 crc ^= *p++;
 425                 for (i = 0; i < 8; i++)
 426                         crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
 427         }
 428         /* an reverse the bits, cuz of way they arrive -- last-first */
 429         crc = (crc >> 16) | (crc << 16);
 430         crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
 431         crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
 432         crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
 433         crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
 434         return crc;
 435 }
 436
 437 #endif
 438
 439
 440 int eth_init(bd_t *bis)
 441 {
 442         struct eth_device* old_current;
 443
 444         if (!eth_current)
 445                 return -1;
 446
 447         old_current = eth_current;
 448         do {
 449                 debug ("Trying %s\n", eth_current->name);
 450
 451                 if (eth_current->init(eth_current,bis) >= 0) {
 452                         eth_current->state = ETH_STATE_ACTIVE;
 453
 454                         return 0;
 455                 }
 456                 debug  ("FAIL\n");
 457
 458                 eth_try_another(0);
 459         } while (old_current != eth_current);
 460
 461         return -1;
 462 }
 463
 464 void eth_halt(void)
 465 {
 466         if (!eth_current)
 467                 return;
 468
 469         eth_current->halt(eth_current);
 470
 471         eth_current->state = ETH_STATE_PASSIVE;
 472 }
 473
 474 int eth_send(volatile void *packet, int length)
 475 {
 476         if (!eth_current)
 477                 return -1;
 478
 479         return eth_current->send(eth_current, packet, length);
 480 }
 481
 482 int eth_rx(void)
 483 {
 484         if (!eth_current)
 485                 return -1;
 486
 487         return eth_current->recv(eth_current);
 488 }
 489
 490 #ifdef CONFIG_API
 491 static void eth_save_packet(volatile void *packet, int length)
 492 {
 493         volatile char *p = packet;
 494         int i;
 495
 496         if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
 497                 return;
 498
 499         if (PKTSIZE < length)
 500                 return;
 501
 502         for (i = 0; i < length; i++)
 503                 eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
 504
 505         eth_rcv_bufs[eth_rcv_last].length = length;
 506         eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
 507 }
 508
 509 int eth_receive(volatile void *packet, int length)
 510 {
 511         volatile char *p = packet;
 512         void *pp = push_packet;
 513         int i;
 514
 515         if (eth_rcv_current == eth_rcv_last) {
 516                 push_packet = eth_save_packet;
 517                 eth_rx();
 518                 push_packet = pp;
 519
 520                 if (eth_rcv_current == eth_rcv_last)
 521                         return -1;
 522         }
 523
 524         if (length < eth_rcv_bufs[eth_rcv_current].length)
 525                 return -1;
 526
 527         length = eth_rcv_bufs[eth_rcv_current].length;
 528
 529         for (i = 0; i < length; i++)
 530                 p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
 531
 532         eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
 533         return length;
 534 }
 535 #endif /* CONFIG_API */
 536
 537 void eth_try_another(int first_restart)
 538 {
 539         static struct eth_device *first_failed = NULL;
 540         char *ethrotate;
 541
 542         /*
 543          * Do not rotate between network interfaces when
 544          * 'ethrotate' variable is set to 'no'.
 545          */
 546         if (((ethrotate = getenv ("ethrotate")) != NULL) &&
 547             (strcmp(ethrotate, "no") == 0))
 548                 return;
 549
 550         if (!eth_current)
 551                 return;
 552
 553         if (first_restart) {
 554                 first_failed = eth_current;
 555         }
 556
 557         eth_current = eth_current->next;
 558
 559 #ifdef CONFIG_NET_MULTI
 560         /* update current ethernet name */
 561         {
 562                 char *act = getenv("ethact");
 563                 if (act == NULL || strcmp(act, eth_current->name) != 0)
 564                         setenv("ethact", eth_current->name);
 565         }
 566 #endif
 567
 568         if (first_failed == eth_current) {
 569                 NetRestartWrap = 1;
 570         }
 571 }
 572
 573 #ifdef CONFIG_NET_MULTI
 574 void eth_set_current(void)
 575 {
 576         char *act;
 577         struct eth_device* old_current;
 578
 579         if (!eth_current)       /* XXX no current */
 580                 return;
 581
 582         act = getenv("ethact");
 583         if (act != NULL) {
 584                 old_current = eth_current;
 585                 do {
 586                         if (strcmp(eth_current->name, act) == 0)
 587                                 return;
 588                         eth_current = eth_current->next;
 589                 } while (old_current != eth_current);
 590         }
 591
 592         setenv("ethact", eth_current->name);
 593 }
 594 #endif
 595
 596 char *eth_get_name (void)
 597 {
 598         return (eth_current ? eth_current->name : "unknown");
 599 }
 600 #elif defined(CONFIG_CMD_NET) && !defined(CONFIG_NET_MULTI)
 601
 602 extern int at91rm9200_miiphy_initialize(bd_t *bis);
 603 extern int emac4xx_miiphy_initialize(bd_t *bis);
 604 extern int mcf52x2_miiphy_initialize(bd_t *bis);
 605 extern int ns7520_miiphy_initialize(bd_t *bis);
 606 extern int dm644x_eth_miiphy_initialize(bd_t *bis);
 607
 608
 609 int eth_initialize(bd_t *bis)
 610 {
 611 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 612         miiphy_init();
 613 #endif
 614
 615 #if defined(CONFIG_AT91RM9200)
 616         at91rm9200_miiphy_initialize(bis);
 617 #endif
 618 #if defined(CONFIG_4xx) && !defined(CONFIG_IOP480) \
 619         && !defined(CONFIG_AP1000) && !defined(CONFIG_405)
 620         emac4xx_miiphy_initialize(bis);
 621 #endif
 622 #if defined(CONFIG_MCF52x2)
 623         mcf52x2_miiphy_initialize(bis);
 624 #endif
 625 #if defined(CONFIG_NETARM)
 626         ns7520_miiphy_initialize(bis);
 627 #endif
 628 #if defined(CONFIG_DRIVER_TI_EMAC)
 629         dm644x_eth_miiphy_initialize(bis);
 630 #endif
 631         return 0;
 632 }
 633 #endif