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bcmgenet: Better coalescing parameter defaults

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Set defaults for TX and RX packet coalescing to be equivalent to:

  # ethtool -C eth0 tx-frames 10
  # ethtool -C eth0 rx-usecs 50

This may be something we want to set via DT parameters in the
future.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
This commit is contained in:
Phil Elwell
2019-03-27 13:45:46 +00:00
committed by Dom Cobley
parent 8857f94b12
commit 920c442dc2
1 changed files with 4 additions and 2 deletions
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6
drivers/net/ethernet/broadcom/genet/bcmgenet.c
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@@ -2728,7 +2728,7 @@ static void bcmgenet_init_tx_ring(struct bcmgenet_priv *priv,
bcmgenet_tdma_ring_writel(priv, index, 0, TDMA_PROD_INDEX);
bcmgenet_tdma_ring_writel(priv, index, 0, TDMA_CONS_INDEX);
bcmgenet_tdma_ring_writel(priv, index, 1, DMA_MBUF_DONE_THRESH);
bcmgenet_tdma_ring_writel(priv, index, 10, DMA_MBUF_DONE_THRESH);
/* Disable rate control for now */
bcmgenet_tdma_ring_writel(priv, index, flow_period_val,
TDMA_FLOW_PERIOD);
@@ -4089,8 +4089,10 @@ static int bcmgenet_probe(struct platform_device *pdev)
netif_set_real_num_rx_queues(priv->dev, priv->hw_params->rx_queues + 1);
/* Set default coalescing parameters */
for (i = 0; i <= priv->hw_params->rx_queues; i++)
for (i = 0; i <= priv->hw_params->rx_queues; i++) {
priv->rx_rings[i].rx_max_coalesced_frames = 1;
priv->rx_rings[i].rx_coalesce_usecs = 50;
}
/* Initialize u64 stats seq counter for 32bit machines */
for (i = 0; i <= priv->hw_params->rx_queues; i++)