diff options
Diffstat (limited to 'net/eth.c')
| -rw-r--r-- | net/eth.c | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/net/eth.c b/net/eth.c new file mode 100644 index 0000000..3b06440 --- /dev/null +++ b/net/eth.c @@ -0,0 +1,292 @@ +/* + * (C) Copyright 2001, 2002 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <command.h> +#include <net.h> + +#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI) + +#ifdef CFG_GT_6426x +extern int gt6426x_eth_initialize(bd_t *bis); +#endif + +extern int eepro100_initialize(bd_t*); +extern int natsemi_initialize(bd_t*); +extern int ns8382x_initialize(bd_t*); +extern int dc21x4x_initialize(bd_t*); +extern int pcnet_initialize(bd_t*); +extern int fec_initialize(bd_t*); +extern int scc_initialize(bd_t*); + +static struct eth_device *eth_devices, *eth_current; + +struct eth_device *eth_get_dev(void) +{ + return eth_current; +} + +int eth_get_dev_index (void) +{ + struct eth_device *dev; + int num = 0; + + if (!eth_devices) { + return (-1); + } + + for (dev = eth_devices; dev; dev = dev->next) { + if (dev == eth_current) + break; + ++num; + } + + if (dev) { + return (num); + } + + return (0); +} + +int eth_register(struct eth_device* dev) +{ + struct eth_device *d; + + if (!eth_devices) { + eth_current = eth_devices = dev; + } else { + for (d=eth_devices; d->next!=eth_devices; d=d->next); + d->next = dev; + } + + dev->state = ETH_STATE_INIT; + dev->next = eth_devices; + + return 0; +} + +int eth_initialize(bd_t *bis) +{ + unsigned char enetvar[32], env_enetaddr[6]; + int i, eth_number = 0; + char *tmp, *end; + + eth_devices = NULL; + eth_current = NULL; + +#ifdef CONFIG_EEPRO100 + eepro100_initialize(bis); +#endif +#ifdef CONFIG_TULIP + dc21x4x_initialize(bis); +#endif +#ifdef CONFIG_PCNET + pcnet_initialize(bis); +#endif +#ifdef CFG_GT_6426x + gt6426x_eth_initialize(bis); +#endif +#ifdef CONFIG_NATSEMI + natsemi_initialize(bis); +#endif +#ifdef CONFIG_NS8382X + ns8382x_initialize(bis); +#endif +#ifdef SCC_ENET + scc_initialize(bis); +#endif +#ifdef FEC_ENET + fec_initialize(bis); +#endif + + if (!eth_devices) { + puts ("No ethernet found.\n"); + } else { + struct eth_device *dev = eth_devices; + char *ethprime = getenv ("ethprime"); + + do { + if (eth_number) + puts (", "); + + printf("%s", dev->name); + + if (ethprime && strcmp (dev->name, ethprime) == 0) { + eth_current = dev; + puts (" [PRIME]"); + } + + sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number); + tmp = getenv (enetvar); + + for (i=0; i<6; i++) { + env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0; + if (tmp) + tmp = (*end) ? end+1 : end; + } + + if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) { + if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) && + memcmp(dev->enetaddr, env_enetaddr, 6)) + { + printf("\nWarning: %s HW address don't match:\n", dev->name); + printf("Address in SROM is " + "%02X:%02X:%02X:%02X:%02X:%02X\n", + dev->enetaddr[0], dev->enetaddr[1], + dev->enetaddr[2], dev->enetaddr[3], + dev->enetaddr[4], dev->enetaddr[5]); + printf("Address in environment is " + "%02X:%02X:%02X:%02X:%02X:%02X\n", + env_enetaddr[0], env_enetaddr[1], + env_enetaddr[2], env_enetaddr[3], + env_enetaddr[4], env_enetaddr[5]); + } + + memcpy(dev->enetaddr, env_enetaddr, 6); + } + + eth_number++; + dev = dev->next; + } while(dev != eth_devices); + + putc ('\n'); + } + + return eth_number; +} + +void eth_set_enetaddr(int num, char *addr) { + struct eth_device *dev; + unsigned char enetaddr[6]; + char *end; + int i; + +#ifdef DEBUG + printf("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr); +#endif + if (!eth_devices) + return; + + for (i=0; i<6; i++) { + enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0; + if (addr) + addr = (*end) ? end+1 : end; + } + + dev = eth_devices; + while(num-- > 0) { + dev = dev->next; + + if (dev == eth_devices) + return; + } + +#ifdef DEBUG + printf("Setting new HW address on %s\n", dev->name); + printf("New Address is " + "%02X:%02X:%02X:%02X:%02X:%02X\n", + dev->enetaddr[0], dev->enetaddr[1], + dev->enetaddr[2], dev->enetaddr[3], + dev->enetaddr[4], dev->enetaddr[5]); +#endif + + memcpy(dev->enetaddr, enetaddr, 6); +} + +int eth_init(bd_t *bis) +{ + struct eth_device* old_current; + + if (!eth_current) + return 0; + + old_current = eth_current; + do { +#ifdef DEBUG + printf("Trying %s\n", eth_current->name); +#endif + + if (eth_current->init(eth_current, bis)) { + eth_current->state = ETH_STATE_ACTIVE; + + printf("%s configured\n", eth_current->name); + return 1; + } + +#ifdef DEBUG + puts ("FAIL\n"); +#endif + + eth_try_another(0); + } while (old_current != eth_current); + + return 0; +} + +void eth_halt(void) +{ + if (!eth_current) + return; + + eth_current->halt(eth_current); + + eth_current->state = ETH_STATE_PASSIVE; +} + +int eth_send(volatile void *packet, int length) +{ + if (!eth_current) + return -1; + + return eth_current->send(eth_current, packet, length); +} + +int eth_rx(void) +{ + if (!eth_current) + return -1; + + return eth_current->recv(eth_current); +} + +void eth_try_another(int first_restart) +{ + static struct eth_device *first_failed = NULL; + + if (!eth_current) + return; + + if (first_restart) + { + first_failed = eth_current; + } + + eth_current = eth_current->next; + + if (first_failed == eth_current) + { + NetRestartWrap = 1; + } +} + +#endif |