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net: bcmgenet: rework Tx 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 12:35:14 -07:00 committed by David S. Miller
parent b2e97eca88
commit e2aadb4aa9
1 changed files with 62 additions and 18 deletions
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80
drivers/net/ethernet/broadcom/genet/bcmgenet.c
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@ -1733,7 +1733,6 @@ static void bcmgenet_init_tx_ring(struct bcmgenet_priv *priv,
spin_lock_init(&ring->lock);
ring->priv = priv;
netif_napi_add(priv->dev, &ring->napi, bcmgenet_tx_poll, 64);
ring->index = index;
if (index == DESC_INDEX) {
ring->queue = 0;
@ -1777,17 +1776,6 @@ static void bcmgenet_init_tx_ring(struct bcmgenet_priv *priv,
TDMA_WRITE_PTR);
bcmgenet_tdma_ring_writel(priv, index, end_ptr * words_per_bd - 1,
DMA_END_ADDR);
napi_enable(&ring->napi);
}
static void bcmgenet_fini_tx_ring(struct bcmgenet_priv *priv,
unsigned int index)
{
struct bcmgenet_tx_ring *ring = &priv->tx_rings[index];
napi_disable(&ring->napi);
netif_napi_del(&ring->napi);
}
/* Initialize a RDMA ring */
@ -1835,6 +1823,62 @@ static int bcmgenet_init_rx_ring(struct bcmgenet_priv *priv,
return ret;
}
static void bcmgenet_init_tx_napi(struct bcmgenet_priv *priv)
{
unsigned int i;
struct bcmgenet_tx_ring *ring;
for (i = 0; i < priv->hw_params->tx_queues; ++i) {
ring = &priv->tx_rings[i];
netif_napi_add(priv->dev, &ring->napi, bcmgenet_tx_poll, 64);
}
ring = &priv->tx_rings[DESC_INDEX];
netif_napi_add(priv->dev, &ring->napi, bcmgenet_tx_poll, 64);
}
static void bcmgenet_enable_tx_napi(struct bcmgenet_priv *priv)
{
unsigned int i;
struct bcmgenet_tx_ring *ring;
for (i = 0; i < priv->hw_params->tx_queues; ++i) {
ring = &priv->tx_rings[i];
napi_enable(&ring->napi);
}
ring = &priv->tx_rings[DESC_INDEX];
napi_enable(&ring->napi);
}
static void bcmgenet_disable_tx_napi(struct bcmgenet_priv *priv)
{
unsigned int i;
struct bcmgenet_tx_ring *ring;
for (i = 0; i < priv->hw_params->tx_queues; ++i) {
ring = &priv->tx_rings[i];
napi_disable(&ring->napi);
}
ring = &priv->tx_rings[DESC_INDEX];
napi_disable(&ring->napi);
}
static void bcmgenet_fini_tx_napi(struct bcmgenet_priv *priv)
{
unsigned int i;
struct bcmgenet_tx_ring *ring;
for (i = 0; i < priv->hw_params->tx_queues; ++i) {
ring = &priv->tx_rings[i];
netif_napi_del(&ring->napi);
}
ring = &priv->tx_rings[DESC_INDEX];
netif_napi_del(&ring->napi);
}
/* Initialize Tx queues
*
* Queues 0-3 are priority-based, each one has 32 descriptors,
@ -1895,6 +1939,9 @@ static void bcmgenet_init_tx_queues(struct net_device *dev)
bcmgenet_tdma_writel(priv, dma_priority[1], DMA_PRIORITY_1);
bcmgenet_tdma_writel(priv, dma_priority[2], DMA_PRIORITY_2);
/* Initialize Tx NAPI */
bcmgenet_init_tx_napi(priv);
/* Enable Tx queues */
bcmgenet_tdma_writel(priv, ring_cfg, DMA_RING_CFG);
@ -2036,12 +2083,7 @@ static void __bcmgenet_fini_dma(struct bcmgenet_priv *priv)
static void bcmgenet_fini_dma(struct bcmgenet_priv *priv)
{
int i;
bcmgenet_fini_tx_ring(priv, DESC_INDEX);
for (i = 0; i < priv->hw_params->tx_queues; i++)
bcmgenet_fini_tx_ring(priv, i);
bcmgenet_fini_tx_napi(priv);
__bcmgenet_fini_dma(priv);
}
@ -2466,6 +2508,7 @@ static void bcmgenet_netif_start(struct net_device *dev)
/* Start the network engine */
napi_enable(&priv->napi);
bcmgenet_enable_tx_napi(priv);
umac_enable_set(priv, CMD_TX_EN | CMD_RX_EN, true);
@ -2574,6 +2617,7 @@ static void bcmgenet_netif_stop(struct net_device *dev)
phy_stop(priv->phydev);
bcmgenet_intr_disable(priv);
bcmgenet_disable_tx_napi(priv);
/* Wait for pending work items to complete. Since interrupts are
* disabled no new work will be scheduled.