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