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