target/linux/generic/backport-5.10/610-v5.13-43-net-ethernet-mtk_eth_soc-use-larger-burst-size-for-Q.patch

   1 From 59555a8d0dd39bf60b7ca1ba5e7393d293f7398d Mon Sep 17 00:00:00 2001
   2 From: Felix Fietkau <nbd@nbd.name>
   3 Date: Thu, 22 Apr 2021 22:21:00 -0700
   4 Subject: [PATCH] net: ethernet: mtk_eth_soc: use larger burst size for QDMA TX
   5
   6 Improves tx performance
   7
   8 Signed-off-by: Felix Fietkau <nbd@nbd.name>
   9 Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
  10 Signed-off-by: David S. Miller <davem@davemloft.net>
  11 ---
  12  drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 +-
  13  drivers/net/ethernet/mediatek/mtk_eth_soc.h | 2 +-
  14  2 files changed, 2 insertions(+), 2 deletions(-)
  15
  16 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
  17 +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
  18 @@ -2234,7 +2234,7 @@ static int mtk_start_dma(struct mtk_eth
  19         if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) {
  20                 mtk_w32(eth,
  21                         MTK_TX_WB_DDONE | MTK_TX_DMA_EN |
  22 -                       MTK_DMA_SIZE_16DWORDS | MTK_NDP_CO_PRO |
  23 +                       MTK_TX_BT_32DWORDS | MTK_NDP_CO_PRO |
  24                         MTK_RX_DMA_EN | MTK_RX_2B_OFFSET |
  25                         MTK_RX_BT_32DWORDS,
  26                         MTK_QDMA_GLO_CFG);
  27 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
  28 +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
  29 @@ -202,7 +202,7 @@
  30  #define MTK_RX_BT_32DWORDS     (3 << 11)
  31  #define MTK_NDP_CO_PRO         BIT(10)
  32  #define MTK_TX_WB_DDONE                BIT(6)
  33 -#define MTK_DMA_SIZE_16DWORDS  (2 << 4)
  34 +#define MTK_TX_BT_32DWORDS     (3 << 4)
  35  #define MTK_RX_DMA_BUSY                BIT(3)
  36  #define MTK_TX_DMA_BUSY                BIT(1)
  37  #define MTK_RX_DMA_EN          BIT(2)