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fb2c6e9d4d
Removed because they are upstream: generic/backport-5.15/704-15-v5.19-net-mtk_eth_soc-move-MAC_MCR-setting-to-mac_finish.patch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.15.y&id=c5c0760adc260d55265c086b9efb350ea6dda38b generic/pending-5.15/735-net-mediatek-mtk_eth_soc-release-MAC_MCR_FORCE_LINK-.patch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.15.y&id=448cc8b5f743985f6d1d98aa4efb386fef4c3bf2 generic/pending-5.15/736-net-ethernet-mtk_eth_soc-fix-PPE-hanging-issue.patch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.15.y&id=9fcadd125044007351905d40c405fadc2d3bb6d6 Add new configuration symbols for tegra target. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
99 lines
3.0 KiB
Diff
99 lines
3.0 KiB
Diff
From: Lorenzo Bianconi <lorenzo@kernel.org>
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Date: Thu, 17 Nov 2022 00:35:04 +0100
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Subject: [PATCH] net: ethernet: mtk_eth_soc: do not overwrite mtu
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configuration running reset routine
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Restore user configured MTU running mtk_hw_init() during tx timeout routine
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since it will be overwritten after a hw reset.
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Reported-by: Felix Fietkau <nbd@nbd.name>
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Fixes: 9ea4d311509f ("net: ethernet: mediatek: add the whole ethernet reset into the reset process")
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Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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@@ -3178,6 +3178,30 @@ static void mtk_dim_tx(struct work_struc
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dim->state = DIM_START_MEASURE;
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}
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+static void mtk_set_mcr_max_rx(struct mtk_mac *mac, u32 val)
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+{
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+ struct mtk_eth *eth = mac->hw;
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+ u32 mcr_cur, mcr_new;
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+
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+ if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628))
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+ return;
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+
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+ mcr_cur = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id));
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+ mcr_new = mcr_cur & ~MAC_MCR_MAX_RX_MASK;
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+
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+ if (val <= 1518)
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+ mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1518);
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+ else if (val <= 1536)
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+ mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1536);
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+ else if (val <= 1552)
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+ mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1552);
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+ else
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+ mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_2048);
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+
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+ if (mcr_new != mcr_cur)
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+ mtk_w32(mac->hw, mcr_new, MTK_MAC_MCR(mac->id));
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+}
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+
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static int mtk_hw_init(struct mtk_eth *eth)
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{
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u32 dma_mask = ETHSYS_DMA_AG_MAP_PDMA | ETHSYS_DMA_AG_MAP_QDMA |
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@@ -3252,8 +3276,16 @@ static int mtk_hw_init(struct mtk_eth *e
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* up with the more appropriate value when mtk_mac_config call is being
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* invoked.
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*/
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- for (i = 0; i < MTK_MAC_COUNT; i++)
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+ for (i = 0; i < MTK_MAC_COUNT; i++) {
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+ struct net_device *dev = eth->netdev[i];
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+
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mtk_w32(eth, MAC_MCR_FORCE_LINK_DOWN, MTK_MAC_MCR(i));
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+ if (dev) {
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+ struct mtk_mac *mac = netdev_priv(dev);
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+
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+ mtk_set_mcr_max_rx(mac, dev->mtu + MTK_RX_ETH_HLEN);
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+ }
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+ }
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/* Indicates CDM to parse the MTK special tag from CPU
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* which also is working out for untag packets.
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@@ -3352,7 +3384,6 @@ static int mtk_change_mtu(struct net_dev
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int length = new_mtu + MTK_RX_ETH_HLEN;
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struct mtk_mac *mac = netdev_priv(dev);
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struct mtk_eth *eth = mac->hw;
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- u32 mcr_cur, mcr_new;
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if (rcu_access_pointer(eth->prog) &&
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length > MTK_PP_MAX_BUF_SIZE) {
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@@ -3360,23 +3391,7 @@ static int mtk_change_mtu(struct net_dev
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return -EINVAL;
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}
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- if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) {
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- mcr_cur = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id));
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- mcr_new = mcr_cur & ~MAC_MCR_MAX_RX_MASK;
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-
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- if (length <= 1518)
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- mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1518);
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- else if (length <= 1536)
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- mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1536);
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- else if (length <= 1552)
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- mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1552);
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- else
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- mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_2048);
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-
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- if (mcr_new != mcr_cur)
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- mtk_w32(mac->hw, mcr_new, MTK_MAC_MCR(mac->id));
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- }
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-
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+ mtk_set_mcr_max_rx(mac, length);
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dev->mtu = new_mtu;
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return 0;
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