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