static int ec_bhf_stop(struct net_device *net_dev)
{
struct ec_bhf_priv *priv = netdev_priv(net_dev);
struct device *dev = PRIV_TO_DEV(priv);
hrtimer_cancel(&priv->hrtimer);
ec_bhf_reset(priv);
netif_tx_disable(net_dev);
dma_free_coherent(dev, priv->tx_buf.alloc_len,
priv->tx_buf.alloc, priv->tx_buf.alloc_phys);
dma_free_coherent(dev, priv->rx_buf.alloc_len,
priv->rx_buf.alloc, priv->rx_buf.alloc_phys);
return 0;
}
static int ec_bhf_open(struct net_device *net_dev)
{
struct ec_bhf_priv *priv = netdev_priv(net_dev);
struct device *dev = PRIV_TO_DEV(priv);
int err = 0;
ec_bhf_reset(priv);
err = ec_bhf_alloc_dma_mem(priv, &priv->rx_buf, priv->rx_dma_chan,
FIFO_SIZE * sizeof(struct rx_desc));
if (err) {
dev_err(dev, "Failed to allocate rx buffer\n");
goto out;
}
ec_bhf_setup_rx_descs(priv);
err = ec_bhf_alloc_dma_mem(priv, &priv->tx_buf, priv->tx_dma_chan,
FIFO_SIZE * sizeof(struct tx_desc));
if (err) {
dev_err(dev, "Failed to allocate tx buffer\n");
goto error_rx_free;
}
iowrite8(0, priv->mii_io + MII_MAC_FILT_FLAG);
ec_bhf_setup_tx_descs(priv);
netif_start_queue(net_dev);
hrtimer_init(&priv->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
priv->hrtimer.function = ec_bhf_timer_fun;
hrtimer_start(&priv->hrtimer, ktime_set(0, polling_frequency),
HRTIMER_MODE_REL);
return 0;
error_rx_free:
dma_free_coherent(dev, priv->rx_buf.alloc_len, priv->rx_buf.alloc,
priv->rx_buf.alloc_len);
out:
return err;
}
