diff options
Diffstat (limited to 'target/linux/generic/backport-5.10/610-v5.13-51-net-ethernet-mtk_eth_soc-use-iopoll.h-macro-for-DMA-.patch')
| -rw-r--r-- | target/linux/generic/backport-5.10/610-v5.13-51-net-ethernet-mtk_eth_soc-use-iopoll.h-macro-for-DMA-.patch | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/target/linux/generic/backport-5.10/610-v5.13-51-net-ethernet-mtk_eth_soc-use-iopoll.h-macro-for-DMA-.patch b/target/linux/generic/backport-5.10/610-v5.13-51-net-ethernet-mtk_eth_soc-use-iopoll.h-macro-for-DMA-.patch deleted file mode 100644 index 493883f4f1..0000000000 --- a/target/linux/generic/backport-5.10/610-v5.13-51-net-ethernet-mtk_eth_soc-use-iopoll.h-macro-for-DMA-.patch +++ /dev/null @@ -1,71 +0,0 @@ -From 3bc8e0aff23be0526af0dbc7973a8866a08d73f1 Mon Sep 17 00:00:00 2001 -From: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com> -Date: Thu, 22 Apr 2021 22:21:08 -0700 -Subject: [PATCH] net: ethernet: mtk_eth_soc: use iopoll.h macro for DMA init - -Replace a tight busy-wait loop without a pause with a standard -readx_poll_timeout_atomic routine with a 5 us poll period. - -Tested by booting a MT7621 device to ensure the driver initializes -properly. - -Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com> -Reviewed-by: Andrew Lunn <andrew@lunn.ch> -Signed-off-by: David S. Miller <davem@davemloft.net> ---- - drivers/net/ethernet/mediatek/mtk_eth_soc.c | 29 +++++++++------------ - drivers/net/ethernet/mediatek/mtk_eth_soc.h | 2 +- - 2 files changed, 14 insertions(+), 17 deletions(-) - ---- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c -+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c -@@ -2075,25 +2075,22 @@ static int mtk_set_features(struct net_d - /* wait for DMA to finish whatever it is doing before we start using it again */ - static int mtk_dma_busy_wait(struct mtk_eth *eth) - { -- unsigned long t_start = jiffies; -+ unsigned int reg; -+ int ret; -+ u32 val; - -- while (1) { -- if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { -- if (!(mtk_r32(eth, MTK_QDMA_GLO_CFG) & -- (MTK_RX_DMA_BUSY | MTK_TX_DMA_BUSY))) -- return 0; -- } else { -- if (!(mtk_r32(eth, MTK_PDMA_GLO_CFG) & -- (MTK_RX_DMA_BUSY | MTK_TX_DMA_BUSY))) -- return 0; -- } -+ if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) -+ reg = MTK_QDMA_GLO_CFG; -+ else -+ reg = MTK_PDMA_GLO_CFG; - -- if (time_after(jiffies, t_start + MTK_DMA_BUSY_TIMEOUT)) -- break; -- } -+ ret = readx_poll_timeout_atomic(__raw_readl, eth->base + reg, val, -+ !(val & (MTK_RX_DMA_BUSY | MTK_TX_DMA_BUSY)), -+ 5, MTK_DMA_BUSY_TIMEOUT_US); -+ if (ret) -+ dev_err(eth->dev, "DMA init timeout\n"); - -- dev_err(eth->dev, "DMA init timeout\n"); -- return -1; -+ return ret; - } - - static int mtk_dma_init(struct mtk_eth *eth) ---- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h -+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h -@@ -213,7 +213,7 @@ - #define MTK_TX_DMA_BUSY BIT(1) - #define MTK_RX_DMA_EN BIT(2) - #define MTK_TX_DMA_EN BIT(0) --#define MTK_DMA_BUSY_TIMEOUT HZ -+#define MTK_DMA_BUSY_TIMEOUT_US 1000000 - - /* QDMA Reset Index Register */ - #define MTK_QDMA_RST_IDX 0x1A08 |