diff options
| author | John Crispin <john@phrozen.org> | 2017-06-19 15:37:04 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-20 13:40:34 -0400 |
| commit | 671d41e60dbd8943ce069137b312f834a483c582 (patch) | |
| tree | 0092830c03c6364b14db21b9b1884044a4e8be49 /drivers/net/ethernet/mediatek/mtk_eth_soc.c | |
| parent | 5969c42768ed6d19e8a61d1ac60e5c8bee8fe9d0 (diff) | |
| download | linux-671d41e60dbd8943ce069137b312f834a483c582.tar.bz2 | |
net-next: mediatek: add RX IRQ delay support
The PDMA engine used for RX allows IRQ aggregation. The patch sets up the
corresponding registers to aggregate 4 IRQs into one. Using aggregation
reduces the load on the core handling to a quarter thus reducing IRQ
latency and increasing RX performance by around 10%.
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mediatek/mtk_eth_soc.c')
| -rw-r--r-- | drivers/net/ethernet/mediatek/mtk_eth_soc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 24d5f1cad7f4..92be59a1e4e7 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1861,9 +1861,11 @@ static int mtk_hw_init(struct mtk_eth *eth) /* Enable RX VLan Offloading */ mtk_w32(eth, 1, MTK_CDMP_EG_CTRL); + /* enable interrupt delay for RX */ + mtk_w32(eth, MTK_PDMA_DELAY_RX_DELAY, MTK_PDMA_DELAY_INT); + /* disable delay and normal interrupt */ mtk_w32(eth, 0, MTK_QDMA_DELAY_INT); - mtk_w32(eth, 0, MTK_PDMA_DELAY_INT); mtk_irq_disable(eth, MTK_QDMA_INT_MASK, ~0); mtk_irq_disable(eth, MTK_PDMA_INT_MASK, ~0); mtk_w32(eth, RST_GL_PSE, MTK_RST_GL); |