diff options
Diffstat (limited to 'target/linux/mediatek')
2 files changed, 191 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-5.4/1011-net-ethernet-mtk_eth_soc-add-support-for-coherent-DM.patch b/target/linux/mediatek/patches-5.4/1011-net-ethernet-mtk_eth_soc-add-support-for-coherent-DM.patch new file mode 100644 index 0000000000..1c2e08aca2 --- /dev/null +++ b/target/linux/mediatek/patches-5.4/1011-net-ethernet-mtk_eth_soc-add-support-for-coherent-DM.patch @@ -0,0 +1,83 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Fri, 4 Sep 2020 18:36:06 +0200 +Subject: [PATCH] net: ethernet: mtk_eth_soc: add support for coherent DMA + +It improves performance by eliminating the need for a cache flush on rx and tx + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi ++++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi +@@ -357,7 +357,7 @@ + }; + + cci_control2: slave-if@5000 { +- compatible = "arm,cci-400-ctrl-if"; ++ compatible = "arm,cci-400-ctrl-if", "syscon"; + interface-type = "ace"; + reg = <0x5000 0x1000>; + }; +@@ -965,6 +965,8 @@ + power-domains = <&scpsys MT7622_POWER_DOMAIN_ETHSYS>; + mediatek,ethsys = <ðsys>; + mediatek,sgmiisys = <&sgmiisys>; ++ mediatek,cci-control = <&cci_control2>; ++ dma-coherent; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c +@@ -9,6 +9,7 @@ + #include <linux/of_device.h> + #include <linux/of_mdio.h> + #include <linux/of_net.h> ++#include <linux/of_address.h> + #include <linux/mfd/syscon.h> + #include <linux/regmap.h> + #include <linux/clk.h> +@@ -2472,6 +2473,12 @@ static int mtk_hw_init(struct mtk_eth *e + if (ret) + goto err_disable_pm; + ++ if (of_dma_is_coherent(eth->dev->of_node)) { ++ u32 mask = ETHSYS_DMA_AG_MAP_PDMA | ETHSYS_DMA_AG_MAP_QDMA; ++ ++ regmap_update_bits(eth->ethsys, ETHSYS_DMA_AG_MAP, mask, mask); ++ } ++ + if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { + ret = device_reset(eth->dev); + if (ret) { +@@ -3074,6 +3081,16 @@ static int mtk_probe(struct platform_dev + } + } + ++ if (of_dma_is_coherent(pdev->dev.of_node)) { ++ struct regmap *cci; ++ ++ cci = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, ++ "mediatek,cci-control"); ++ /* enable CPU/bus coherency */ ++ if (!IS_ERR(cci)) ++ regmap_write(cci, 0, 3); ++ } ++ + if (MTK_HAS_CAPS(eth->soc->caps, MTK_SGMII)) { + eth->sgmii = devm_kzalloc(eth->dev, sizeof(*eth->sgmii), + GFP_KERNEL); +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h +@@ -425,6 +425,11 @@ + #define RSTCTRL_FE BIT(6) + #define RSTCTRL_PPE BIT(31) + ++/* ethernet dma channel agent map */ ++#define ETHSYS_DMA_AG_MAP 0x408 ++#define ETHSYS_DMA_AG_MAP_PDMA BIT(0) ++#define ETHSYS_DMA_AG_MAP_QDMA BIT(1) ++ + /* SGMII subsystem config registers */ + /* Register to auto-negotiation restart */ + #define SGMSYS_PCS_CONTROL_1 0x0 diff --git a/target/linux/mediatek/patches-5.4/1012-pci-pcie-mediatek-add-support-for-coherent-DMA.patch b/target/linux/mediatek/patches-5.4/1012-pci-pcie-mediatek-add-support-for-coherent-DMA.patch new file mode 100644 index 0000000000..5f55fe0c03 --- /dev/null +++ b/target/linux/mediatek/patches-5.4/1012-pci-pcie-mediatek-add-support-for-coherent-DMA.patch @@ -0,0 +1,108 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Fri, 4 Sep 2020 18:42:42 +0200 +Subject: [PATCH] pci: pcie-mediatek: add support for coherent DMA + +It improves performance by eliminating the need for a cache flush for DMA on +attached devices + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi ++++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi +@@ -801,6 +801,8 @@ + reg = <0 0x1a143000 0 0x1000>; + reg-names = "port0"; + mediatek,pcie-cfg = <&pciecfg>; ++ mediatek,hifsys = <&hifsys>; ++ mediatek,cci-control = <&cci_control2>; + #address-cells = <3>; + #size-cells = <2>; + interrupts = <GIC_SPI 228 IRQ_TYPE_LEVEL_LOW>; +@@ -818,6 +820,7 @@ + bus-range = <0x00 0xff>; + ranges = <0x82000000 0 0x20000000 0x0 0x20000000 0 0x8000000>; + status = "disabled"; ++ dma-coherent; + + slot0: pcie@0,0 { + reg = <0x0000 0 0 0 0>; +@@ -844,6 +847,8 @@ + reg = <0 0x1a145000 0 0x1000>; + reg-names = "port1"; + mediatek,pcie-cfg = <&pciecfg>; ++ mediatek,hifsys = <&hifsys>; ++ mediatek,cci-control = <&cci_control2>; + #address-cells = <3>; + #size-cells = <2>; + interrupts = <GIC_SPI 229 IRQ_TYPE_LEVEL_LOW>; +@@ -862,6 +867,7 @@ + bus-range = <0x00 0xff>; + ranges = <0x82000000 0 0x28000000 0x0 0x28000000 0 0x8000000>; + status = "disabled"; ++ dma-coherent; + + slot1: pcie@1,0 { + reg = <0x0800 0 0 0 0>; +@@ -921,6 +927,11 @@ + }; + }; + ++ hifsys: syscon@1af00000 { ++ compatible = "mediatek,mt7622-hifsys", "syscon"; ++ reg = <0 0x1af00000 0 0x70>; ++ }; ++ + ethsys: syscon@1b000000 { + compatible = "mediatek,mt7622-ethsys", + "syscon"; +--- a/drivers/pci/controller/pcie-mediatek.c ++++ b/drivers/pci/controller/pcie-mediatek.c +@@ -20,6 +20,7 @@ + #include <linux/of_address.h> + #include <linux/of_pci.h> + #include <linux/of_platform.h> ++#include <linux/of_address.h> + #include <linux/pci.h> + #include <linux/phy/phy.h> + #include <linux/platform_device.h> +@@ -139,6 +140,11 @@ + #define PCIE_LINK_STATUS_V2 0x804 + #define PCIE_PORT_LINKUP_V2 BIT(10) + ++/* DMA channel mapping */ ++#define HIFSYS_DMA_AG_MAP 0x008 ++#define HIFSYS_DMA_AG_MAP_PCIE0 BIT(0) ++#define HIFSYS_DMA_AG_MAP_PCIE1 BIT(1) ++ + struct mtk_pcie_port; + + /** +@@ -1068,6 +1074,27 @@ static int mtk_pcie_setup(struct mtk_pci + } + } + ++ if (of_dma_is_coherent(node)) { ++ struct regmap *con; ++ u32 mask; ++ ++ con = syscon_regmap_lookup_by_phandle(node, ++ "mediatek,cci-control"); ++ /* enable CPU/bus coherency */ ++ if (!IS_ERR(con)) ++ regmap_write(con, 0, 3); ++ ++ con = syscon_regmap_lookup_by_phandle(node, ++ "mediatek,hifsys"); ++ if (IS_ERR(con)) { ++ dev_err(dev, "missing hifsys node\n"); ++ return PTR_ERR(con); ++ } ++ ++ mask = HIFSYS_DMA_AG_MAP_PCIE0 | HIFSYS_DMA_AG_MAP_PCIE1; ++ regmap_update_bits(con, HIFSYS_DMA_AG_MAP, mask, mask); ++ } ++ + for_each_available_child_of_node(node, child) { + int slot; + |