/**
* nps_enet_open - Open the network device.
* @ndev: Pointer to the network device.
*
* returns: 0, on success or non-zero error value on failure.
*
* This function sets the MAC address, requests and enables an IRQ
* for the ENET device and starts the Tx queue.
*/
static s32 nps_enet_open(struct net_device *ndev)
{
struct nps_enet_priv *priv = netdev_priv(ndev);
s32 err;
/* Reset private variables */
priv->tx_packet_sent = false;
priv->ge_mac_cfg_2.value = 0;
priv->ge_mac_cfg_3.value = 0;
/* ge_mac_cfg_3 default values */
priv->ge_mac_cfg_3.rx_ifg_th = NPS_ENET_GE_MAC_CFG_3_RX_IFG_TH;
priv->ge_mac_cfg_3.max_len = NPS_ENET_GE_MAC_CFG_3_MAX_LEN;
/* Disable HW device */
nps_enet_hw_disable_control(ndev);
/* irq Rx allocation */
err = request_irq(priv->irq, nps_enet_irq_handler,
0, "enet-rx-tx", ndev);
if (err)
return err;
napi_enable(&priv->napi);
/* Enable HW device */
nps_enet_hw_reset(ndev);
nps_enet_hw_enable_control(ndev);
netif_start_queue(ndev);
return 0;
}
/**
* nps_enet_stop - Close the network device.
* @ndev: Pointer to the network device.
*
* This function stops the Tx queue, disables interrupts for the ENET device.
*/
static s32 nps_enet_stop(struct net_device *ndev)
{
struct nps_enet_priv *priv = netdev_priv(ndev);
napi_disable(&priv->napi);
netif_stop_queue(ndev);
nps_enet_hw_disable_control(ndev);
free_irq(priv->irq, ndev);
return 0;
}
/**
* nps_enet_open - Open the network device.
* @ndev: Pointer to the network device.
*
* returns: 0, on success or non-zero error value on failure.
*
* This function sets the MAC address, requests and enables an IRQ
* for the ENET device and starts the Tx queue.
*/
static s32 nps_enet_open(struct net_device *ndev)
{
struct nps_enet_priv *priv = netdev_priv(ndev);
s32 err;
/* Reset private variables */
priv->tx_skb = NULL;
priv->ge_mac_cfg_2_value = 0;
priv->ge_mac_cfg_3_value = 0;
/* ge_mac_cfg_3 default values */
priv->ge_mac_cfg_3_value |=
NPS_ENET_GE_MAC_CFG_3_RX_IFG_TH << CFG_3_RX_IFG_TH_SHIFT;
priv->ge_mac_cfg_3_value |=
NPS_ENET_GE_MAC_CFG_3_MAX_LEN << CFG_3_MAX_LEN_SHIFT;
/* Disable HW device */
nps_enet_hw_disable_control(ndev);
/* irq Rx allocation */
err = request_irq(priv->irq, nps_enet_irq_handler,
0, "enet-rx-tx", ndev);
if (err)
return err;
napi_enable(&priv->napi);
/* Enable HW device */
nps_enet_hw_reset(ndev);
nps_enet_hw_enable_control(ndev);
netif_start_queue(ndev);
return 0;
}
