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 ppc_440x_eth_initialize(bd_t *);
  50 extern int rtl8139_initialize(bd_t*);
  51 extern int scc_initialize(bd_t*);
  52 extern int skge_initialize(bd_t*);
  53 extern int tsec_initialize(bd_t*);
  54
  55 static struct eth_device *eth_devices, *eth_current;
  56
  57 struct eth_device *eth_get_dev(void)
  58 {
  59         return eth_current;
  60 }
  61
  62 int eth_get_dev_index (void)
  63 {
  64         struct eth_device *dev;
  65         int num = 0;
  66
  67         if (!eth_devices) {
  68                 return (-1);
  69         }
  70
  71         for (dev = eth_devices; dev; dev = dev->next) {
  72                 if (dev == eth_current)
  73                         break;
  74                 ++num;
  75         }
  76
  77         if (dev) {
  78                 return (num);
  79         }
  80
  81         return (0);
  82 }
  83
  84 int eth_register(struct eth_device* dev)
  85 {
  86         struct eth_device *d;
  87
  88         if (!eth_devices) {
  89                 eth_current = eth_devices = dev;
  90         } else {
  91                 for (d=eth_devices; d->next!=eth_devices; d=d->next);
  92                 d->next = dev;
  93         }
  94
  95         dev->state = ETH_STATE_INIT;
  96         dev->next  = eth_devices;
  97
  98         return 0;
  99 }
 100
 101 int eth_initialize(bd_t *bis)
 102 {
 103         unsigned char enetvar[32], env_enetaddr[6];
 104         int i, eth_number = 0;
 105         char *tmp, *end;
 106
 107         eth_devices = NULL;
 108         eth_current = NULL;
 109
 110 #ifdef CONFIG_DB64360
 111         mv6436x_eth_initialize(bis);
 112 #endif
 113 #ifdef CONFIG_DB64460
 114         mv6446x_eth_initialize(bis);
 115 #endif
 116 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || ( defined(CONFIG_440) && !defined(CONFIG_NET_MULTI) )
 117         ppc_4xx_eth_initialize(bis);
 118 #endif
 119 #if defined(CONFIG_440) && defined(CONFIG_NET_MULTI)
 120         ppc_440x_eth_initialize(bis);
 121 #endif
 122 #ifdef CONFIG_INCA_IP_SWITCH
 123         inca_switch_initialize(bis);
 124 #endif
 125 #ifdef CONFIG_PLB2800_ETHER
 126         plb2800_eth_initialize(bis);
 127 #endif
 128 #ifdef CONFIG_E1000
 129         e1000_initialize(bis);
 130 #endif
 131 #ifdef CONFIG_EEPRO100
 132         eepro100_initialize(bis);
 133 #endif
 134 #ifdef CONFIG_TULIP
 135         dc21x4x_initialize(bis);
 136 #endif
 137 #ifdef CONFIG_3COM
 138         eth_3com_initialize(bis);
 139 #endif
 140 #ifdef CONFIG_PCNET
 141         pcnet_initialize(bis);
 142 #endif
 143 #ifdef CFG_GT_6426x
 144         gt6426x_eth_initialize(bis);
 145 #endif
 146 #ifdef CONFIG_NATSEMI
 147         natsemi_initialize(bis);
 148 #endif
 149 #ifdef CONFIG_NS8382X
 150         ns8382x_initialize(bis);
 151 #endif
 152 #ifdef SCC_ENET
 153         scc_initialize(bis);
 154 #endif
 155 #if defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FCC)
 156         fec_initialize(bis);
 157 #endif
 158 #if defined(CONFIG_MPC5XXX_FEC)
 159         mpc5xxx_fec_initialize(bis);
 160 #endif
 161 #if defined(CONFIG_SK98)
 162         skge_initialize(bis);
 163 #endif
 164 #ifdef CONFIG_TSEC_ENET
 165        tsec_initialize(bis);
 166 #endif
 167 #if defined(CONFIG_AU1X00)
 168         au1x00_enet_initialize(bis);
 169 #endif
 170 #if defined(CONFIG_RTL8139)
 171         rtl8139_initialize(bis);
 172 #endif
 173
 174         if (!eth_devices) {
 175                 puts ("No ethernet found.\n");
 176         } else {
 177                 struct eth_device *dev = eth_devices;
 178                 char *ethprime = getenv ("ethprime");
 179
 180                 do {
 181                         if (eth_number)
 182                                 puts (", ");
 183
 184                         printf("%s", dev->name);
 185
 186                         if (ethprime && strcmp (dev->name, ethprime) == 0) {
 187                                 eth_current = dev;
 188                                 puts (" [PRIME]");
 189                         }
 190
 191                         sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
 192                         tmp = getenv (enetvar);
 193
 194                         for (i=0; i<6; i++) {
 195                                 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
 196                                 if (tmp)
 197                                         tmp = (*end) ? end+1 : end;
 198                         }
 199
 200                         if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
 201                                 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
 202                                     memcmp(dev->enetaddr, env_enetaddr, 6))
 203                                 {
 204                                         printf("\nWarning: %s MAC addresses don't match:\n", dev->name);
 205                                         printf("Address in SROM is         "
 206                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 207                                                dev->enetaddr[0], dev->enetaddr[1],
 208                                                dev->enetaddr[2], dev->enetaddr[3],
 209                                                dev->enetaddr[4], dev->enetaddr[5]);
 210                                         printf("Address in environment is  "
 211                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 212                                                env_enetaddr[0], env_enetaddr[1],
 213                                                env_enetaddr[2], env_enetaddr[3],
 214                                                env_enetaddr[4], env_enetaddr[5]);
 215                                 }
 216
 217                                 memcpy(dev->enetaddr, env_enetaddr, 6);
 218                         }
 219
 220                         eth_number++;
 221                         dev = dev->next;
 222                 } while(dev != eth_devices);
 223
 224                 putc ('\n');
 225         }
 226
 227         return eth_number;
 228 }
 229
 230 void eth_set_enetaddr(int num, char *addr) {
 231         struct eth_device *dev;
 232         unsigned char enetaddr[6];
 233         char *end;
 234         int i;
 235
 236         debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
 237
 238         if (!eth_devices)
 239                 return;
 240
 241         for (i=0; i<6; i++) {
 242                 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
 243                 if (addr)
 244                         addr = (*end) ? end+1 : end;
 245         }
 246
 247         dev = eth_devices;
 248         while(num-- > 0) {
 249                 dev = dev->next;
 250
 251                 if (dev == eth_devices)
 252                         return;
 253         }
 254
 255         debug ( "Setting new HW address on %s\n"
 256                 "New Address is             %02X:%02X:%02X:%02X:%02X:%02X\n",
 257                 dev->name,
 258                 dev->enetaddr[0], dev->enetaddr[1],
 259                 dev->enetaddr[2], dev->enetaddr[3],
 260                 dev->enetaddr[4], dev->enetaddr[5]);
 261
 262         memcpy(dev->enetaddr, enetaddr, 6);
 263 }
 264
 265 int eth_init(bd_t *bis)
 266 {
 267         struct eth_device* old_current;
 268
 269         if (!eth_current)
 270                 return 0;
 271
 272         old_current = eth_current;
 273         do {
 274                 debug ("Trying %s\n", eth_current->name);
 275
 276                 if (eth_current->init(eth_current, bis)) {
 277                         eth_current->state = ETH_STATE_ACTIVE;
 278
 279                         return 1;
 280                 }
 281                 debug  ("FAIL\n");
 282
 283                 eth_try_another(0);
 284         } while (old_current != eth_current);
 285
 286         return 0;
 287 }
 288
 289 void eth_halt(void)
 290 {
 291         if (!eth_current)
 292                 return;
 293
 294         eth_current->halt(eth_current);
 295
 296         eth_current->state = ETH_STATE_PASSIVE;
 297 }
 298
 299 int eth_send(volatile void *packet, int length)
 300 {
 301         if (!eth_current)
 302                 return -1;
 303
 304         return eth_current->send(eth_current, packet, length);
 305 }
 306
 307 int eth_rx(void)
 308 {
 309         if (!eth_current)
 310                 return -1;
 311
 312         return eth_current->recv(eth_current);
 313 }
 314
 315 void eth_try_another(int first_restart)
 316 {
 317         static struct eth_device *first_failed = NULL;
 318
 319         if (!eth_current)
 320                 return;
 321
 322         if (first_restart)
 323         {
 324                 first_failed = eth_current;
 325         }
 326
 327         eth_current = eth_current->next;
 328
 329         if (first_failed == eth_current)
 330         {
 331                 NetRestartWrap = 1;
 332         }
 333 }
 334
 335 char *eth_get_name (void)
 336 {
 337         return (eth_current ? eth_current->name : "unknown");
 338 }
 339 #endif