git.sur5r.net Git - u-boot/blob - 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
  47 static struct eth_device *eth_devices, *eth_current;
  48
  49 struct eth_device *eth_get_dev(void)
  50 {
  51         return eth_current;
  52 }
  53
  54 int eth_get_dev_index (void)
  55 {
  56         struct eth_device *dev;
  57         int num = 0;
  58
  59         if (!eth_devices) {
  60                 return (-1);
  61         }
  62
  63         for (dev = eth_devices; dev; dev = dev->next) {
  64                 if (dev == eth_current)
  65                         break;
  66                 ++num;
  67         }
  68
  69         if (dev) {
  70                 return (num);
  71         }
  72
  73         return (0);
  74 }
  75
  76 int eth_register(struct eth_device* dev)
  77 {
  78         struct eth_device *d;
  79
  80         if (!eth_devices) {
  81                 eth_current = eth_devices = dev;
  82         } else {
  83                 for (d=eth_devices; d->next!=eth_devices; d=d->next);
  84                 d->next = dev;
  85         }
  86
  87         dev->state = ETH_STATE_INIT;
  88         dev->next  = eth_devices;
  89
  90         return 0;
  91 }
  92
  93 int eth_initialize(bd_t *bis)
  94 {
  95         unsigned char enetvar[32], env_enetaddr[6];
  96         int i, eth_number = 0;
  97         char *tmp, *end;
  98
  99         eth_devices = NULL;
 100         eth_current = NULL;
 101
 102 #if (defined(CONFIG_405GP) || defined(CONFIG_440)|| defined(CONFIG_405EP)
 103         ppc_4xx_eth_initialize(bis);
 104 #endif
 105 #ifdef CONFIG_INCA_IP_SWITCH
 106         inca_switch_initialize(bis);
 107 #endif
 108 #ifdef CONFIG_PLB2800_ETHER
 109         plb2800_eth_initialize(bis);
 110 #endif
 111 #ifdef CONFIG_E1000
 112         e1000_initialize(bis);
 113 #endif
 114 #ifdef CONFIG_EEPRO100
 115         eepro100_initialize(bis);
 116 #endif
 117 #ifdef CONFIG_TULIP
 118         dc21x4x_initialize(bis);
 119 #endif
 120 #ifdef CONFIG_3COM
 121         eth_3com_initialize(bis);
 122 #endif
 123 #ifdef CONFIG_PCNET
 124         pcnet_initialize(bis);
 125 #endif
 126 #ifdef CFG_GT_6426x
 127         gt6426x_eth_initialize(bis);
 128 #endif
 129 #ifdef CONFIG_NATSEMI
 130         natsemi_initialize(bis);
 131 #endif
 132 #ifdef CONFIG_NS8382X
 133         ns8382x_initialize(bis);
 134 #endif
 135 #ifdef SCC_ENET
 136         scc_initialize(bis);
 137 #endif
 138 #if defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FCC)
 139         fec_initialize(bis);
 140 #endif
 141
 142         if (!eth_devices) {
 143                 puts ("No ethernet found.\n");
 144         } else {
 145                 struct eth_device *dev = eth_devices;
 146                 char *ethprime = getenv ("ethprime");
 147
 148                 do {
 149                         if (eth_number)
 150                                 puts (", ");
 151
 152                         printf("%s", dev->name);
 153
 154                         if (ethprime && strcmp (dev->name, ethprime) == 0) {
 155                                 eth_current = dev;
 156                                 puts (" [PRIME]");
 157                         }
 158
 159                         sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
 160                         tmp = getenv (enetvar);
 161
 162                         for (i=0; i<6; i++) {
 163                                 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
 164                                 if (tmp)
 165                                         tmp = (*end) ? end+1 : end;
 166                         }
 167
 168                         if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
 169                                 if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
 170                                     memcmp(dev->enetaddr, env_enetaddr, 6))
 171                                 {
 172                                         printf("\nWarning: %s MAC addresses don't match:\n", dev->name);
 173                                         printf("Address in SROM is         "
 174                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 175                                                dev->enetaddr[0], dev->enetaddr[1],
 176                                                dev->enetaddr[2], dev->enetaddr[3],
 177                                                dev->enetaddr[4], dev->enetaddr[5]);
 178                                         printf("Address in environment is  "
 179                                                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 180                                                env_enetaddr[0], env_enetaddr[1],
 181                                                env_enetaddr[2], env_enetaddr[3],
 182                                                env_enetaddr[4], env_enetaddr[5]);
 183                                 }
 184
 185                                 memcpy(dev->enetaddr, env_enetaddr, 6);
 186                         }
 187
 188                         eth_number++;
 189                         dev = dev->next;
 190                 } while(dev != eth_devices);
 191
 192                 putc ('\n');
 193         }
 194
 195         return eth_number;
 196 }
 197
 198 void eth_set_enetaddr(int num, char *addr) {
 199         struct eth_device *dev;
 200         unsigned char enetaddr[6];
 201         char *end;
 202         int i;
 203
 204 #ifdef DEBUG
 205         printf("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
 206 #endif
 207         if (!eth_devices)
 208                 return;
 209
 210         for (i=0; i<6; i++) {
 211                 enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
 212                 if (addr)
 213                         addr = (*end) ? end+1 : end;
 214         }
 215
 216         dev = eth_devices;
 217         while(num-- > 0) {
 218                 dev = dev->next;
 219
 220                 if (dev == eth_devices)
 221                         return;
 222         }
 223
 224 #ifdef DEBUG
 225         printf("Setting new HW address on %s\n", dev->name);
 226         printf("New Address is             "
 227                "%02X:%02X:%02X:%02X:%02X:%02X\n",
 228                dev->enetaddr[0], dev->enetaddr[1],
 229                dev->enetaddr[2], dev->enetaddr[3],
 230                dev->enetaddr[4], dev->enetaddr[5]);
 231 #endif
 232
 233         memcpy(dev->enetaddr, enetaddr, 6);
 234 }
 235
 236 int eth_init(bd_t *bis)
 237 {
 238         struct eth_device* old_current;
 239
 240         if (!eth_current)
 241                 return 0;
 242
 243         old_current = eth_current;
 244         do {
 245 #ifdef DEBUG
 246                 printf("Trying %s\n", eth_current->name);
 247 #endif
 248
 249                 if (eth_current->init(eth_current, bis)) {
 250                         eth_current->state = ETH_STATE_ACTIVE;
 251
 252                         return 1;
 253                 }
 254
 255 #ifdef DEBUG
 256                 puts ("FAIL\n");
 257 #endif
 258
 259                 eth_try_another(0);
 260         } while (old_current != eth_current);
 261
 262         return 0;
 263 }
 264
 265 void eth_halt(void)
 266 {
 267         if (!eth_current)
 268                 return;
 269
 270         eth_current->halt(eth_current);
 271
 272         eth_current->state = ETH_STATE_PASSIVE;
 273 }
 274
 275 int eth_send(volatile void *packet, int length)
 276 {
 277         if (!eth_current)
 278                 return -1;
 279
 280         return eth_current->send(eth_current, packet, length);
 281 }
 282
 283 int eth_rx(void)
 284 {
 285         if (!eth_current)
 286                 return -1;
 287
 288         return eth_current->recv(eth_current);
 289 }
 290
 291 void eth_try_another(int first_restart)
 292 {
 293         static struct eth_device *first_failed = NULL;
 294
 295         if (!eth_current)
 296                 return;
 297
 298         if (first_restart)
 299         {
 300                 first_failed = eth_current;
 301         }
 302
 303         eth_current = eth_current->next;
 304
 305         if (first_failed == eth_current)
 306         {
 307                 NetRestartWrap = 1;
 308         }
 309 }
 310
 311 #endif