diff options
| author | Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com> | 2021-04-23 17:19:22 -0700 |
|---|---|---|
| committer | Hauke Mehrtens <hauke@hauke-m.de> | 2021-04-30 23:48:37 +0200 |
| commit | 0d6f20723047c02bd624f0384df9dc74ee075bc7 (patch) | |
| tree | f8ecc404999fafdf99475653201802143f1c60f2 /target/linux/generic/backport-5.10/610-v5.13-51-net-ethernet-mtk_eth_soc-use-iopoll.h-macro-for-DMA-.patch | |
| parent | 4b14b42abfe263ea9f67ff4e29e563e1160005fc (diff) | |
| download | upstream-0d6f20723047c02bd624f0384df9dc74ee075bc7.tar.gz upstream-0d6f20723047c02bd624f0384df9dc74ee075bc7.tar.bz2 upstream-0d6f20723047c02bd624f0384df9dc74ee075bc7.zip | |
kernel: backport mtk_soc_eth fixes from v5.13
Fixes logic that leads to this error when booting mt7621 and other
devices that use the mediatek ethernet driver:
[ 23.144378] mtk_soc_eth 1e100000.ethernet: PPE table busy
The rest are mostly moved from pending-5.10 to backport-5.10 with a
couple of cleanups and improvements from upstream.
Refresh patches.
Links:
https://git.kernel.org/netdev/net-next/c/c5d66587b890
https://git.kernel.org/netdev/net-next/c/3f57d8c40fea
https://git.kernel.org/netdev/net-next/c/5196c4178549
https://git.kernel.org/netdev/net-next/c/787082ab9f7b
https://git.kernel.org/netdev/net-next/c/c30c4a827390
https://git.kernel.org/netdev/net-next/c/3630d519d7c3
https://git.kernel.org/netdev/net-next/c/16ef670789b2
https://git.kernel.org/netdev/net-next/c/59555a8d0dd3
https://git.kernel.org/netdev/net-next/c/6b4423b258b9
https://git.kernel.org/netdev/net-next/c/e9229ffd550b
https://git.kernel.org/netdev/net-next/c/4e6bf609569c
https://git.kernel.org/netdev/net-next/c/816ac3e6e67b
https://git.kernel.org/netdev/net-next/c/16769a8923fa
https://git.kernel.org/netdev/net-next/c/db2c7b353db3
https://git.kernel.org/netdev/net-next/c/fa817272c37e
https://git.kernel.org/netdev/net-next/c/3bc8e0aff23b
Fixes: f07fe36f22fc ("kernel: update flow offload patches to upstream version")
Cc: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
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, 71 insertions, 0 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 new file mode 100644 index 0000000000..fd2fb0f7c4 --- /dev/null +++ b/target/linux/generic/backport-5.10/610-v5.13-51-net-ethernet-mtk_eth_soc-use-iopoll.h-macro-for-DMA-.patch @@ -0,0 +1,71 @@ +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 +@@ -2033,25 +2033,22 @@ 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 |