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