static int eth_write_hwaddr(struct udevice *dev)
{
struct eth_pdata *pdata = dev->platdata;
int ret = 0;
if (!dev || !device_active(dev))
return -EINVAL;
/* seq is valid since the device is active */
if (eth_get_ops(dev)->write_hwaddr && !eth_mac_skip(dev->seq)) {
if (!is_valid_ethaddr(pdata->enetaddr)) {
printf("\nError: %s address %pM illegal value\n",
dev->name, pdata->enetaddr);
return -EINVAL;
}
/*
* Drivers are allowed to decide not to implement this at
* run-time. E.g. Some devices may use it and some may not.
*/
ret = eth_get_ops(dev)->write_hwaddr(dev);
if (ret == -ENOSYS)
ret = 0;
if (ret)
printf("\nWarning: %s failed to set MAC address\n",
dev->name);
}
return ret;
}
int eth_rx(void)
{
struct udevice *current;
uchar *packet;
int flags;
int ret;
int i;
current = eth_get_dev();
if (!current)
return -ENODEV;
if (!device_active(current))
return -EINVAL;
/* Process up to 32 packets at one time */
flags = ETH_RECV_CHECK_DEVICE;
for (i = 0; i < 32; i++) {
ret = eth_get_ops(current)->recv(current, flags, &packet);
flags = 0;
if (ret > 0)
net_process_received_packet(packet, ret);
if (ret >= 0 && eth_get_ops(current)->free_pkt)
eth_get_ops(current)->free_pkt(current, packet, ret);
if (ret <= 0)
break;
}
if (ret == -EAGAIN)
ret = 0;
if (ret < 0) {
/* We cannot completely return the error at present */
debug("%s: recv() returned error %d\n", __func__, ret);
}
return ret;
}
static int eth_pre_remove(struct udevice *dev)
{
struct eth_pdata *pdata = dev->platdata;
eth_get_ops(dev)->stop(dev);
/* clear the MAC address */
memset(pdata->enetaddr, 0, ARP_HLEN);
return 0;
}
void eth_halt(void)
{
struct udevice *current;
struct eth_device_priv *priv;
current = eth_get_dev();
if (!current || !device_active(current))
return;
eth_get_ops(current)->stop(current);
priv = current->uclass_priv;
priv->state = ETH_STATE_PASSIVE;
}
int eth_send(void *packet, int length)
{
struct udevice *current;
int ret;
current = eth_get_dev();
if (!current)
return -ENODEV;
if (!device_active(current))
return -EINVAL;
ret = eth_get_ops(current)->send(current, packet, length);
if (ret < 0) {
/* We cannot completely return the error at present */
debug("%s: send() returned error %d\n", __func__, ret);
}
return ret;
}
static int eth_post_probe(struct udevice *dev)
{
struct eth_device_priv *priv = dev->uclass_priv;
struct eth_pdata *pdata = dev->platdata;
unsigned char env_enetaddr[ARP_HLEN];
#if defined(CONFIG_NEEDS_MANUAL_RELOC)
struct eth_ops *ops = eth_get_ops(dev);
static int reloc_done;
if (!reloc_done) {
if (ops->start)
ops->start += gd->reloc_off;
if (ops->send)
ops->send += gd->reloc_off;
if (ops->recv)
ops->recv += gd->reloc_off;
if (ops->free_pkt)
ops->free_pkt += gd->reloc_off;
if (ops->stop)
ops->stop += gd->reloc_off;
#ifdef CONFIG_MCAST_TFTP
if (ops->mcast)
ops->mcast += gd->reloc_off;
#endif
if (ops->write_hwaddr)
ops->write_hwaddr += gd->reloc_off;
if (ops->read_rom_hwaddr)
ops->read_rom_hwaddr += gd->reloc_off;
reloc_done++;
}
#endif
priv->state = ETH_STATE_INIT;
/* Check if the device has a MAC address in ROM */
if (eth_get_ops(dev)->read_rom_hwaddr)
eth_get_ops(dev)->read_rom_hwaddr(dev);
eth_getenv_enetaddr_by_index("eth", dev->seq, env_enetaddr);
if (!is_zero_ethaddr(env_enetaddr)) {
if (!is_zero_ethaddr(pdata->enetaddr) &&
memcmp(pdata->enetaddr, env_enetaddr, ARP_HLEN)) {
printf("\nWarning: %s MAC addresses don't match:\n",
dev->name);
printf("Address in ROM is %pM\n",
pdata->enetaddr);
printf("Address in environment is %pM\n",
env_enetaddr);
}
/* Override the ROM MAC address */
memcpy(pdata->enetaddr, env_enetaddr, ARP_HLEN);
} else if (is_valid_ethaddr(pdata->enetaddr)) {
eth_setenv_enetaddr_by_index("eth", dev->seq, pdata->enetaddr);
printf("\nWarning: %s using MAC address from ROM\n",
dev->name);
} else if (is_zero_ethaddr(pdata->enetaddr) ||
!is_valid_ethaddr(pdata->enetaddr)) {
#ifdef CONFIG_NET_RANDOM_ETHADDR
net_random_ethaddr(pdata->enetaddr);
printf("\nWarning: %s (eth%d) using random MAC address - %pM\n",
dev->name, dev->seq, pdata->enetaddr);
#else
printf("\nError: %s address not set.\n",
dev->name);
return -EINVAL;
#endif
}
return 0;
}
int eth_init(void)
{
char *ethact = getenv("ethact");
char *ethrotate = getenv("ethrotate");
struct udevice *current = NULL;
struct udevice *old_current;
int ret = -ENODEV;
/*
* When 'ethrotate' variable is set to 'no' and 'ethact' variable
* is already set to an ethernet device, we should stick to 'ethact'.
*/
if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0)) {
if (ethact) {
current = eth_get_dev_by_name(ethact);
if (!current)
return -EINVAL;
}
}
if (!current) {
current = eth_get_dev();
if (!current) {
printf("No ethernet found.\n");
return -ENODEV;
}
}
old_current = current;
do {
if (current) {
debug("Trying %s\n", current->name);
if (device_active(current)) {
ret = eth_get_ops(current)->start(current);
if (ret >= 0) {
struct eth_device_priv *priv =
current->uclass_priv;
priv->state = ETH_STATE_ACTIVE;
return 0;
}
} else {
ret = eth_errno;
}
debug("FAIL\n");
} else {
debug("PROBE FAIL\n");
}
/*
* If ethrotate is enabled, this will change "current",
* otherwise we will drop out of this while loop immediately
*/
eth_try_another(0);
/* This will ensure the new "current" attempted to probe */
current = eth_get_dev();
} while (old_current != current);
return ret;
}
