net/eth.c

   1 /*
   2  * (C) Copyright 2001, 2002
   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 e1000_initialize(bd_t*);
  35 extern int eepro100_initialize(bd_t*);
  36 extern int natsemi_initialize(bd_t*);
  37 extern int ns8382x_initialize(bd_t*);
  38 extern int dc21x4x_initialize(bd_t*);
  39 extern int eth_3com_initialize(bd_t*);
  40 extern int pcnet_initialize(bd_t*);
  41 extern int fec_initialize(bd_t*);
  42 extern int scc_initialize(bd_t*);
  43 extern int inca_switch_initialize(bd_t*);
  44 extern int plb2800_eth_initialize(bd_t*);
  45
  46 static struct eth_device *eth_devices, *eth_current;
  47
  48 struct eth_device *eth_get_dev(void)
  49 {
  50         return eth_current;
  51 }
  52
  53 int eth_get_dev_index (void)
  54 {
  55         struct eth_device *dev;
  56         int num = 0;
  57
  58         if (!eth_devices) {
  59                 return (-1);
  60         }
  61
  62         for (dev = eth_devices; dev; dev = dev->next) {
  63                 if (dev == eth_current)
  64                         break;
  65                 ++num;
  66         }
  67
  68         if (dev) {
  69                 return (num);
  70         }
  71
  72         return (0);
  73 }
  74
  75 int eth_register(struct eth_device* dev)
  76 {
  77         struct eth_device *d;
  78
  79         if (!eth_devices) {
  80                 eth_current = eth_devices = dev;
  81         } else {
  82                 for (d=eth_devices; d->next!=eth_devices; d=d->next);
  83                 d->next = dev;
  84         }
  85
  86         dev->state = ETH_STATE_INIT;
  87         dev->next  = eth_devices;
  88
  89         return 0;
  90 }
  91
  92 int eth_initialize(bd_t *bis)
  93 {
  94         unsigned char enetvar[32], env_enetaddr[6];
  95         int i, eth_number = 0;
  96         char *tmp, *end;
  97
  98         eth_devices = NULL;
  99         eth_current = NULL;
 100
 101 #ifdef CONFIG_INCA_IP_SWITCH
 102         inca_switch_initialize(bis);
 103 #endif
 104 #ifdef CONFIG_PLB2800_ETHER
 105         plb2800_eth_initialize(bis);
 106 #endif
 107 #ifdef CONFIG_E1000
 108         e1000_initialize(bis);
 109 #endif
 110 #ifdef CONFIG_EEPRO100
 111         eepro100_initialize(bis);
 112 #endif
 113 #ifdef CONFIG_TULIP
 114         dc21x4x_initialize(bis);
 115 #endif
 116 #ifdef CONFIG_3COM
 117         eth_3com_initialize(bis);
 118 #endif
 119 #ifdef CONFIG_PCNET
 120         pcnet_initialize(bis);
 121 #endif
 122 #ifdef CFG_GT_6426x
 123         gt6426x_eth_initialize(bis);
 124 #endif
 125 #ifdef CONFIG_NATSEMI
 126         natsemi_initialize(bis);
 127 #endif
 128 #ifdef CONFIG_NS8382X
 129         ns8382x_initialize(bis);
 130 #endif
 131 #ifdef SCC_ENET
 132         scc_initialize(bis);
 133 #endif
 134 #if defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FCC)
 135         fec_initialize(bis);
 136 #endif
 137
 138         if (!eth_devices) {
 139                 puts ("No ethernet found.\n");
 140         } else {
 141                 struct eth_device *dev = eth_devices;
 142                 char *ethprime = getenv ("ethprime");
 143
 144                 do {
 145                         if (eth_number)
 146                                 puts (", ");
 147
 148                         printf("%s", dev->name);
 149
 150                         if (ethprime && strcmp (dev->name, ethprime) == 0) {
 151                                 eth_current = dev;
 152                                 puts (" [PRIME]");
 153                         }
 154
 155                         sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
 156                         tmp = getenv (enetvar);
 157
 158                         for (i=0; i<6; i++) {
 159                                 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
 160                                 if (tmp)
 161                                         tmp = (*end) ? end+1 : end;
 162                         }
 163
 164                         if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
 165                                 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
 166                                     memcmp(dev->enetaddr, env_enetaddr, 6))
 167                                 {
 168                                         printf("\nWarning: %s MAC addresses don't match:\n", dev->name);
 169                                         printf("Address in SROM is         "
 170                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 171                                                dev->enetaddr[0], dev->enetaddr[1],
 172                                                dev->enetaddr[2], dev->enetaddr[3],
 173                                                dev->enetaddr[4], dev->enetaddr[5]);
 174                                         printf("Address in environment is  "
 175                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 176                                                env_enetaddr[0], env_enetaddr[1],
 177                                                env_enetaddr[2], env_enetaddr[3],
 178                                                env_enetaddr[4], env_enetaddr[5]);
 179                                 }
 180
 181                                 memcpy(dev->enetaddr, env_enetaddr, 6);
 182                         }
 183
 184                         eth_number++;
 185                         dev = dev->next;
 186                 } while(dev != eth_devices);
 187
 188                 putc ('\n');
 189         }
 190
 191         return eth_number;
 192 }
 193
 194 void eth_set_enetaddr(int num, char *addr) {
 195         struct eth_device *dev;
 196         unsigned char enetaddr[6];
 197         char *end;
 198         int i;
 199
 200 #ifdef DEBUG
 201         printf("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
 202 #endif
 203         if (!eth_devices)
 204                 return;
 205
 206         for (i=0; i<6; i++) {
 207                 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
 208                 if (addr)
 209                         addr = (*end) ? end+1 : end;
 210         }
 211
 212         dev = eth_devices;
 213         while(num-- > 0) {
 214                 dev = dev->next;
 215
 216                 if (dev == eth_devices)
 217                         return;
 218         }
 219
 220 #ifdef DEBUG
 221         printf("Setting new HW address on %s\n", dev->name);
 222         printf("New Address is             "
 223                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 224                dev->enetaddr[0], dev->enetaddr[1],
 225                dev->enetaddr[2], dev->enetaddr[3],
 226                dev->enetaddr[4], dev->enetaddr[5]);
 227 #endif
 228
 229         memcpy(dev->enetaddr, enetaddr, 6);
 230 }
 231
 232 int eth_init(bd_t *bis)
 233 {
 234         struct eth_device* old_current;
 235
 236         if (!eth_current)
 237                 return 0;
 238
 239         old_current = eth_current;
 240         do {
 241 #ifdef DEBUG
 242                 printf("Trying %s\n", eth_current->name);
 243 #endif
 244
 245                 if (eth_current->init(eth_current, bis)) {
 246                         eth_current->state = ETH_STATE_ACTIVE;
 247
 248                         return 1;
 249                 }
 250
 251 #ifdef DEBUG
 252                 puts ("FAIL\n");
 253 #endif
 254
 255                 eth_try_another(0);
 256         } while (old_current != eth_current);
 257
 258         return 0;
 259 }
 260
 261 void eth_halt(void)
 262 {
 263         if (!eth_current)
 264                 return;
 265
 266         eth_current->halt(eth_current);
 267
 268         eth_current->state = ETH_STATE_PASSIVE;
 269 }
 270
 271 int eth_send(volatile void *packet, int length)
 272 {
 273         if (!eth_current)
 274                 return -1;
 275
 276         return eth_current->send(eth_current, packet, length);
 277 }
 278
 279 int eth_rx(void)
 280 {
 281         if (!eth_current)
 282                 return -1;
 283
 284         return eth_current->recv(eth_current);
 285 }
 286
 287 void eth_try_another(int first_restart)
 288 {
 289         static struct eth_device *first_failed = NULL;
 290
 291         if (!eth_current)
 292                 return;
 293
 294         if (first_restart)
 295         {
 296                 first_failed = eth_current;
 297         }
 298
 299         eth_current = eth_current->next;
 300
 301         if (first_failed == eth_current)
 302         {
 303                 NetRestartWrap = 1;
 304         }
 305 }
 306
 307 #endif