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
  28 #if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI)
  29
  30 #ifdef CFG_GT_6426x
  31 extern int gt6426x_eth_initialize(bd_t *bis);
  32 #endif
  33
  34 extern int au1x00_enet_initialize(bd_t*);
  35 extern int dc21x4x_initialize(bd_t*);
  36 extern int e1000_initialize(bd_t*);
  37 extern int eepro100_initialize(bd_t*);
  38 extern int eth_3com_initialize(bd_t*);
  39 extern int fec_initialize(bd_t*);
  40 extern int inca_switch_initialize(bd_t*);
  41 extern int mpc5xxx_fec_initialize(bd_t*);
  42 extern int mv6436x_eth_initialize(bd_t *);
  43 extern int mv6446x_eth_initialize(bd_t *);
  44 extern int natsemi_initialize(bd_t*);
  45 extern int ns8382x_initialize(bd_t*);
  46 extern int pcnet_initialize(bd_t*);
  47 extern int plb2800_eth_initialize(bd_t*);
  48 extern int ppc_4xx_eth_initialize(bd_t *);
  49 extern int rtl8139_initialize(bd_t*);
  50 extern int scc_initialize(bd_t*);
  51 extern int skge_initialize(bd_t*);
  52 extern int tsec_initialize(bd_t*);
  53
  54 static struct eth_device *eth_devices, *eth_current;
  55
  56 struct eth_device *eth_get_dev(void)
  57 {
  58         return eth_current;
  59 }
  60
  61 int eth_get_dev_index (void)
  62 {
  63         struct eth_device *dev;
  64         int num = 0;
  65
  66         if (!eth_devices) {
  67                 return (-1);
  68         }
  69
  70         for (dev = eth_devices; dev; dev = dev->next) {
  71                 if (dev == eth_current)
  72                         break;
  73                 ++num;
  74         }
  75
  76         if (dev) {
  77                 return (num);
  78         }
  79
  80         return (0);
  81 }
  82
  83 int eth_register(struct eth_device* dev)
  84 {
  85         struct eth_device *d;
  86
  87         if (!eth_devices) {
  88                 eth_current = eth_devices = dev;
  89         } else {
  90                 for (d=eth_devices; d->next!=eth_devices; d=d->next);
  91                 d->next = dev;
  92         }
  93
  94         dev->state = ETH_STATE_INIT;
  95         dev->next  = eth_devices;
  96
  97         return 0;
  98 }
  99
 100 int eth_initialize(bd_t *bis)
 101 {
 102         unsigned char enetvar[32], env_enetaddr[6];
 103         int i, eth_number = 0;
 104         char *tmp, *end;
 105
 106         eth_devices = NULL;
 107         eth_current = NULL;
 108
 109 #ifdef CONFIG_DB64360
 110         mv6436x_eth_initialize(bis);
 111 #endif
 112 #ifdef CONFIG_DB64460
 113         mv6446x_eth_initialize(bis);
 114 #endif
 115 #if defined(CONFIG_405GP) || defined(CONFIG_440) || defined(CONFIG_405EP)
 116         ppc_4xx_eth_initialize(bis);
 117 #endif
 118 #ifdef CONFIG_INCA_IP_SWITCH
 119         inca_switch_initialize(bis);
 120 #endif
 121 #ifdef CONFIG_PLB2800_ETHER
 122         plb2800_eth_initialize(bis);
 123 #endif
 124 #ifdef CONFIG_E1000
 125         e1000_initialize(bis);
 126 #endif
 127 #ifdef CONFIG_EEPRO100
 128         eepro100_initialize(bis);
 129 #endif
 130 #ifdef CONFIG_TULIP
 131         dc21x4x_initialize(bis);
 132 #endif
 133 #ifdef CONFIG_3COM
 134         eth_3com_initialize(bis);
 135 #endif
 136 #ifdef CONFIG_PCNET
 137         pcnet_initialize(bis);
 138 #endif
 139 #ifdef CFG_GT_6426x
 140         gt6426x_eth_initialize(bis);
 141 #endif
 142 #ifdef CONFIG_NATSEMI
 143         natsemi_initialize(bis);
 144 #endif
 145 #ifdef CONFIG_NS8382X
 146         ns8382x_initialize(bis);
 147 #endif
 148 #ifdef SCC_ENET
 149         scc_initialize(bis);
 150 #endif
 151 #if defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FCC)
 152         fec_initialize(bis);
 153 #endif
 154 #if defined(CONFIG_MPC5XXX_FEC)
 155         mpc5xxx_fec_initialize(bis);
 156 #endif
 157 #if defined(CONFIG_SK98)
 158         skge_initialize(bis);
 159 #endif
 160 #ifdef CONFIG_TSEC_ENET
 161        tsec_initialize(bis);
 162 #endif
 163 #if defined(CONFIG_AU1X00)
 164         au1x00_enet_initialize(bis);
 165 #endif
 166 #if defined(CONFIG_RTL8139)
 167         rtl8139_initialize(bis);
 168 #endif
 169
 170         if (!eth_devices) {
 171                 puts ("No ethernet found.\n");
 172         } else {
 173                 struct eth_device *dev = eth_devices;
 174                 char *ethprime = getenv ("ethprime");
 175
 176                 do {
 177                         if (eth_number)
 178                                 puts (", ");
 179
 180                         printf("%s", dev->name);
 181
 182                         if (ethprime && strcmp (dev->name, ethprime) == 0) {
 183                                 eth_current = dev;
 184                                 puts (" [PRIME]");
 185                         }
 186
 187                         sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
 188                         tmp = getenv (enetvar);
 189
 190                         for (i=0; i<6; i++) {
 191                                 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
 192                                 if (tmp)
 193                                         tmp = (*end) ? end+1 : end;
 194                         }
 195
 196                         if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
 197                                 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
 198                                     memcmp(dev->enetaddr, env_enetaddr, 6))
 199                                 {
 200                                         printf("\nWarning: %s MAC addresses don't match:\n", dev->name);
 201                                         printf("Address in SROM is         "
 202                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 203                                                dev->enetaddr[0], dev->enetaddr[1],
 204                                                dev->enetaddr[2], dev->enetaddr[3],
 205                                                dev->enetaddr[4], dev->enetaddr[5]);
 206                                         printf("Address in environment is  "
 207                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 208                                                env_enetaddr[0], env_enetaddr[1],
 209                                                env_enetaddr[2], env_enetaddr[3],
 210                                                env_enetaddr[4], env_enetaddr[5]);
 211                                 }
 212
 213                                 memcpy(dev->enetaddr, env_enetaddr, 6);
 214                         }
 215
 216                         eth_number++;
 217                         dev = dev->next;
 218                 } while(dev != eth_devices);
 219
 220                 putc ('\n');
 221         }
 222
 223         return eth_number;
 224 }
 225
 226 void eth_set_enetaddr(int num, char *addr) {
 227         struct eth_device *dev;
 228         unsigned char enetaddr[6];
 229         char *end;
 230         int i;
 231
 232         debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
 233
 234         if (!eth_devices)
 235                 return;
 236
 237         for (i=0; i<6; i++) {
 238                 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
 239                 if (addr)
 240                         addr = (*end) ? end+1 : end;
 241         }
 242
 243         dev = eth_devices;
 244         while(num-- > 0) {
 245                 dev = dev->next;
 246
 247                 if (dev == eth_devices)
 248                         return;
 249         }
 250
 251         debug ( "Setting new HW address on %s\n"
 252                 "New Address is             %02X:%02X:%02X:%02X:%02X:%02X\n",
 253                 dev->name,
 254                 dev->enetaddr[0], dev->enetaddr[1],
 255                 dev->enetaddr[2], dev->enetaddr[3],
 256                 dev->enetaddr[4], dev->enetaddr[5]);
 257
 258         memcpy(dev->enetaddr, enetaddr, 6);
 259 }
 260
 261 int eth_init(bd_t *bis)
 262 {
 263         struct eth_device* old_current;
 264
 265         if (!eth_current)
 266                 return 0;
 267
 268         old_current = eth_current;
 269         do {
 270                 debug ("Trying %s\n", eth_current->name);
 271
 272                 if (eth_current->init(eth_current, bis)) {
 273                         eth_current->state = ETH_STATE_ACTIVE;
 274
 275                         return 1;
 276                 }
 277                 debug  ("FAIL\n");
 278
 279                 eth_try_another(0);
 280         } while (old_current != eth_current);
 281
 282         return 0;
 283 }
 284
 285 void eth_halt(void)
 286 {
 287         if (!eth_current)
 288                 return;
 289
 290         eth_current->halt(eth_current);
 291
 292         eth_current->state = ETH_STATE_PASSIVE;
 293 }
 294
 295 int eth_send(volatile void *packet, int length)
 296 {
 297         if (!eth_current)
 298                 return -1;
 299
 300         return eth_current->send(eth_current, packet, length);
 301 }
 302
 303 int eth_rx(void)
 304 {
 305         if (!eth_current)
 306                 return -1;
 307
 308         return eth_current->recv(eth_current);
 309 }
 310
 311 void eth_try_another(int first_restart)
 312 {
 313         static struct eth_device *first_failed = NULL;
 314
 315         if (!eth_current)
 316                 return;
 317
 318         if (first_restart)
 319         {
 320                 first_failed = eth_current;
 321         }
 322
 323         eth_current = eth_current->next;
 324
 325         if (first_failed == eth_current)
 326         {
 327                 NetRestartWrap = 1;
 328         }
 329 }
 330
 331 char *eth_get_name (void)
 332 {
 333         return (eth_current ? eth_current->name : "unknown");
 334 }
 335 #endif