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