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net: bcmgenet: rework Rx NAPI code 

Introduce new bcmgenet functions to handle the NAPI calls to:
netif_napi_add()
napi_enable()
napi_disable()
netif_napi_del()

Signed-off-by: Petri Gynther <pgynther@google.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petri Gynther 2015-03-25 12:35:15 -07:00 committed by David S. Miller
parent e2aadb4aa9
commit 3ab113399b
1 changed files with 45 additions and 23 deletions
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68
drivers/net/ethernet/broadcom/genet/bcmgenet.c
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@ -1544,6 +1544,25 @@ next:
return rxpktprocessed;
}
/* Rx NAPI polling method */
static int bcmgenet_rx_poll(struct napi_struct *napi, int budget)
{
struct bcmgenet_priv *priv = container_of(napi,
struct bcmgenet_priv, napi);
unsigned int work_done;
work_done = bcmgenet_desc_rx(priv, DESC_INDEX, budget);
if (work_done < budget) {
napi_complete(napi);
bcmgenet_intrl2_0_writel(priv, UMAC_IRQ_RXDMA_BDONE |
UMAC_IRQ_RXDMA_PDONE,
INTRL2_CPU_MASK_CLEAR);
}
return work_done;
}
/* Assign skb to RX DMA descriptor. */
static int bcmgenet_alloc_rx_buffers(struct bcmgenet_priv *priv,
struct bcmgenet_rx_ring *ring)
@ -1951,6 +1970,26 @@ static void bcmgenet_init_tx_queues(struct net_device *dev)
bcmgenet_tdma_writel(priv, dma_ctrl, DMA_CTRL);
}
static void bcmgenet_init_rx_napi(struct bcmgenet_priv *priv)
{
netif_napi_add(priv->dev, &priv->napi, bcmgenet_rx_poll, 64);
}
static void bcmgenet_enable_rx_napi(struct bcmgenet_priv *priv)
{
napi_enable(&priv->napi);
}
static void bcmgenet_disable_rx_napi(struct bcmgenet_priv *priv)
{
napi_disable(&priv->napi);
}
static void bcmgenet_fini_rx_napi(struct bcmgenet_priv *priv)
{
netif_napi_del(&priv->napi);
}
/* Initialize Rx queues
*
* Queues 0-15 are priority queues. Hardware Filtering Block (HFB) can be
@ -2000,6 +2039,9 @@ static int bcmgenet_init_rx_queues(struct net_device *dev)
ring_cfg |= (1 << DESC_INDEX);
dma_ctrl |= (1 << (DESC_INDEX + DMA_RING_BUF_EN_SHIFT));
/* Initialize Rx NAPI */
bcmgenet_init_rx_napi(priv);
/* Enable rings */
bcmgenet_rdma_writel(priv, ring_cfg, DMA_RING_CFG);
@ -2083,6 +2125,7 @@ static void __bcmgenet_fini_dma(struct bcmgenet_priv *priv)
static void bcmgenet_fini_dma(struct bcmgenet_priv *priv)
{
bcmgenet_fini_rx_napi(priv);
bcmgenet_fini_tx_napi(priv);
__bcmgenet_fini_dma(priv);
@ -2147,25 +2190,6 @@ static int bcmgenet_init_dma(struct bcmgenet_priv *priv)
return 0;
}
/* NAPI polling method*/
static int bcmgenet_poll(struct napi_struct *napi, int budget)
{
struct bcmgenet_priv *priv = container_of(napi,
struct bcmgenet_priv, napi);
unsigned int work_done;
work_done = bcmgenet_desc_rx(priv, DESC_INDEX, budget);
if (work_done < budget) {
napi_complete(napi);
bcmgenet_intrl2_0_writel(priv, UMAC_IRQ_RXDMA_BDONE |
UMAC_IRQ_RXDMA_PDONE,
INTRL2_CPU_MASK_CLEAR);
}
return work_done;
}
/* Interrupt bottom half */
static void bcmgenet_irq_task(struct work_struct *work)
{
@ -2507,7 +2531,7 @@ static void bcmgenet_netif_start(struct net_device *dev)
struct bcmgenet_priv *priv = netdev_priv(dev);
/* Start the network engine */
napi_enable(&priv->napi);
bcmgenet_enable_rx_napi(priv);
bcmgenet_enable_tx_napi(priv);
umac_enable_set(priv, CMD_TX_EN | CMD_RX_EN, true);
@ -2613,10 +2637,9 @@ static void bcmgenet_netif_stop(struct net_device *dev)
struct bcmgenet_priv *priv = netdev_priv(dev);
netif_tx_stop_all_queues(dev);
napi_disable(&priv->napi);
phy_stop(priv->phydev);
bcmgenet_intr_disable(priv);
bcmgenet_disable_rx_napi(priv);
bcmgenet_disable_tx_napi(priv);
/* Wait for pending work items to complete. Since interrupts are
@ -3018,7 +3041,6 @@ static int bcmgenet_probe(struct platform_device *pdev)
dev->watchdog_timeo = 2 * HZ;
dev->ethtool_ops = &bcmgenet_ethtool_ops;
dev->netdev_ops = &bcmgenet_netdev_ops;
netif_napi_add(dev, &priv->napi, bcmgenet_poll, 64);
priv->msg_enable = netif_msg_init(-1, GENET_MSG_DEFAULT);