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Message-Id: <20150325193514.14CE82201FB@puck.mtv.corp.google.com>
Date: Wed, 25 Mar 2015 12:35:14 -0700 (PDT)
From: Petri Gynther <pgynther@...gle.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, f.fainelli@...il.com, jaedon.shin@...il.com
Subject: [PATCH net-next 5/7] 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@...gle.com>
---
drivers/net/ethernet/broadcom/genet/bcmgenet.c | 80 ++++++++++++++++++++------
1 file changed, 62 insertions(+), 18 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index 68873be..367006d 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -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.
--
2.2.0.rc0.207.ga3a616c
--
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