net: ethernet: mtk_eth_wed: add wed support for mt7986 chipset

Introduce Wireless Etherne Dispatcher support on transmission side
for mt7986 chipset
Tested-by: Daniel Golle <daniel@makrotopia.org>
Co-developed-by: Bo Jiao <Bo.Jiao@mediatek.com>
Signed-off-by: Bo Jiao <Bo.Jiao@mediatek.com>
Co-developed-by: Sujuan Chen <sujuan.chen@mediatek.com>
Signed-off-by: Sujuan Chen <sujuan.chen@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/ethernet/mediatek/mtk_eth_soc.c

@@ -3944,6 +3944,7 @@ void mtk_eth_set_dma_device(struct mtk_eth *eth, struct device *dma_dev)
 
 static int mtk_probe(struct platform_device *pdev)
 {
+	struct resource *res = NULL;
 	struct device_node *mac_np;
 	struct mtk_eth *eth;
 	int err, i;
@@ -4024,16 +4025,31 @@ static int mtk_probe(struct platform_device *pdev)
 		}
 	}
 
+	if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) {
+		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+		if (!res)
+			return -EINVAL;
+	}
+
+	if (eth->soc->offload_version) {
 		for (i = 0;; i++) {
-		struct device_node *np = of_parse_phandle(pdev->dev.of_node,
-							  "mediatek,wed", i);
-		void __iomem *wdma;
+			struct device_node *np;
+			phys_addr_t wdma_phy;
+			u32 wdma_base;
 
-		if (!np || i >= ARRAY_SIZE(eth->soc->reg_map->wdma_base))
+			if (i >= ARRAY_SIZE(eth->soc->reg_map->wdma_base))
 				break;
 
-		wdma = eth->base + eth->soc->reg_map->wdma_base[i];
-		mtk_wed_add_hw(np, eth, wdma, i);
+			np = of_parse_phandle(pdev->dev.of_node,
+					      "mediatek,wed", i);
+			if (!np)
+				break;
+
+			wdma_base = eth->soc->reg_map->wdma_base[i];
+			wdma_phy = res ? res->start + wdma_base : 0;
+			mtk_wed_add_hw(np, eth, eth->base + wdma_base,
+				       wdma_phy, i);
+		}
 	}
 
 	for (i = 0; i < 3; i++) {

drivers/net/ethernet/mediatek/mtk_wed.h

@@ -18,11 +18,13 @@ struct mtk_wed_hw {
 	struct regmap *hifsys;
 	struct device *dev;
 	void __iomem *wdma;
+	phys_addr_t wdma_phy;
 	struct regmap *mirror;
 	struct dentry *debugfs_dir;
 	struct mtk_wed_device *wed_dev;
 	u32 debugfs_reg;
 	u32 num_flows;
+	u8 version;
 	char dirname[5];
 	int irq;
 	int index;
@@ -101,14 +103,16 @@ wpdma_txfree_w32(struct mtk_wed_device *dev, u32 reg, u32 val)
 }
 
 void mtk_wed_add_hw(struct device_node *np, struct mtk_eth *eth,
-		    void __iomem *wdma, int index);
+		    void __iomem *wdma, phys_addr_t wdma_phy,
+		    int index);
 void mtk_wed_exit(void);
 int mtk_wed_flow_add(int index);
 void mtk_wed_flow_remove(int index);
 #else
 static inline void
 mtk_wed_add_hw(struct device_node *np, struct mtk_eth *eth,
-	       void __iomem *wdma, int index)
+	       void __iomem *wdma, phys_addr_t wdma_phy,
+	       int index)
 {
 }
 static inline void

drivers/net/ethernet/mediatek/mtk_wed_debugfs.c

@@ -116,6 +116,9 @@ wed_txinfo_show(struct seq_file *s, void *data)
 		DUMP_WDMA(WDMA_GLO_CFG),
 		DUMP_WDMA_RING(WDMA_RING_RX(0)),
 		DUMP_WDMA_RING(WDMA_RING_RX(1)),
+
+		DUMP_STR("TX FREE"),
+		DUMP_WED(WED_RX_MIB(0)),
 	};
 	struct mtk_wed_hw *hw = s->private;
 	struct mtk_wed_device *dev = hw->wed_dev;

drivers/net/ethernet/mediatek/mtk_wed_regs.h

@@ -5,6 +5,7 @@
 #define __MTK_WED_REGS_H
 
 #define MTK_WDMA_DESC_CTRL_LEN1			GENMASK(14, 0)
+#define MTK_WDMA_DESC_CTRL_LEN1_V2		GENMASK(13, 0)
 #define MTK_WDMA_DESC_CTRL_LAST_SEG1		BIT(15)
 #define MTK_WDMA_DESC_CTRL_BURST		BIT(16)
 #define MTK_WDMA_DESC_CTRL_LEN0			GENMASK(29, 16)
@@ -41,6 +42,7 @@ struct mtk_wdma_desc {
 #define MTK_WED_CTRL_RESERVE_EN				BIT(12)
 #define MTK_WED_CTRL_RESERVE_BUSY			BIT(13)
 #define MTK_WED_CTRL_FINAL_DIDX_READ			BIT(24)
+#define MTK_WED_CTRL_ETH_DMAD_FMT			BIT(25)
 #define MTK_WED_CTRL_MIB_READ_CLEAR			BIT(28)
 
 #define MTK_WED_EXT_INT_STATUS				0x020
@@ -57,7 +59,8 @@ struct mtk_wdma_desc {
 #define MTK_WED_EXT_INT_STATUS_RX_DRV_INIT_WDMA_EN	BIT(19)
 #define MTK_WED_EXT_INT_STATUS_RX_DRV_BM_DMAD_COHERENT	BIT(20)
 #define MTK_WED_EXT_INT_STATUS_TX_DRV_R_RESP_ERR	BIT(21)
-#define MTK_WED_EXT_INT_STATUS_TX_DRV_W_RESP_ERR	BIT(22)
+#define MTK_WED_EXT_INT_STATUS_TX_DMA_R_RESP_ERR	BIT(22)
+#define MTK_WED_EXT_INT_STATUS_TX_DMA_W_RESP_ERR	BIT(23)
 #define MTK_WED_EXT_INT_STATUS_RX_DRV_DMA_RECYCLE	BIT(24)
 #define MTK_WED_EXT_INT_STATUS_ERROR_MASK		(MTK_WED_EXT_INT_STATUS_TF_LEN_ERR | \
 							 MTK_WED_EXT_INT_STATUS_TKID_WO_PYLD | \
@@ -65,8 +68,7 @@ struct mtk_wdma_desc {
 							 MTK_WED_EXT_INT_STATUS_RX_DRV_R_RESP_ERR | \
 							 MTK_WED_EXT_INT_STATUS_RX_DRV_W_RESP_ERR | \
 							 MTK_WED_EXT_INT_STATUS_RX_DRV_INIT_WDMA_EN | \
-							 MTK_WED_EXT_INT_STATUS_TX_DRV_R_RESP_ERR | \
-							 MTK_WED_EXT_INT_STATUS_TX_DRV_W_RESP_ERR)
+							 MTK_WED_EXT_INT_STATUS_TX_DMA_R_RESP_ERR)
 
 #define MTK_WED_EXT_INT_MASK				0x028
 
@@ -81,6 +83,7 @@ struct mtk_wdma_desc {
 #define MTK_WED_TX_BM_BASE				0x084
 
 #define MTK_WED_TX_BM_TKID				0x088
+#define MTK_WED_TX_BM_TKID_V2				0x0c8
 #define MTK_WED_TX_BM_TKID_START			GENMASK(15, 0)
 #define MTK_WED_TX_BM_TKID_END				GENMASK(31, 16)
 
@@ -94,7 +97,25 @@ struct mtk_wdma_desc {
 
 #define MTK_WED_TX_BM_DYN_THR				0x0a0
 #define MTK_WED_TX_BM_DYN_THR_LO			GENMASK(6, 0)
+#define MTK_WED_TX_BM_DYN_THR_LO_V2			GENMASK(8, 0)
 #define MTK_WED_TX_BM_DYN_THR_HI			GENMASK(22, 16)
+#define MTK_WED_TX_BM_DYN_THR_HI_V2			GENMASK(24, 16)
+
+#define MTK_WED_TX_TKID_CTRL				0x0c0
+#define MTK_WED_TX_TKID_CTRL_VLD_GRP_NUM		GENMASK(6, 0)
+#define MTK_WED_TX_TKID_CTRL_RSV_GRP_NUM		GENMASK(22, 16)
+#define MTK_WED_TX_TKID_CTRL_PAUSE			BIT(28)
+
+#define MTK_WED_TX_TKID_DYN_THR				0x0e0
+#define MTK_WED_TX_TKID_DYN_THR_LO			GENMASK(6, 0)
+#define MTK_WED_TX_TKID_DYN_THR_HI			GENMASK(22, 16)
+
+#define MTK_WED_TXP_DW0					0x120
+#define MTK_WED_TXP_DW1					0x124
+#define MTK_WED_WPDMA_WRITE_TXP				GENMASK(31, 16)
+#define MTK_WED_TXDP_CTRL				0x130
+#define MTK_WED_TXDP_DW9_OVERWR				BIT(9)
+#define MTK_WED_RX_BM_TKID_MIB				0x1cc
 
 #define MTK_WED_INT_STATUS				0x200
 #define MTK_WED_INT_MASK				0x204
@@ -125,6 +146,7 @@ struct mtk_wdma_desc {
 #define MTK_WED_RESET_IDX_RX				GENMASK(17, 16)
 
 #define MTK_WED_TX_MIB(_n)				(0x2a0 + (_n) * 4)
+#define MTK_WED_RX_MIB(_n)				(0x2e0 + (_n) * 4)
 
 #define MTK_WED_RING_TX(_n)				(0x300 + (_n) * 0x10)
 
@@ -155,21 +177,62 @@ struct mtk_wdma_desc {
 #define MTK_WED_WPDMA_GLO_CFG_BYTE_SWAP			BIT(29)
 #define MTK_WED_WPDMA_GLO_CFG_RX_2B_OFFSET		BIT(31)
 
+/* CONFIG_MEDIATEK_NETSYS_V2 */
+#define MTK_WED_WPDMA_GLO_CFG_RX_DRV_R0_PKT_PROC	BIT(4)
+#define MTK_WED_WPDMA_GLO_CFG_RX_DRV_R1_PKT_PROC	BIT(5)
+#define MTK_WED_WPDMA_GLO_CFG_RX_DRV_R0_CRX_SYNC	BIT(6)
+#define MTK_WED_WPDMA_GLO_CFG_RX_DRV_R1_CRX_SYNC	BIT(7)
+#define MTK_WED_WPDMA_GLO_CFG_RX_DRV_EVENT_PKT_FMT_VER	GENMASK(18, 16)
+#define MTK_WED_WPDMA_GLO_CFG_RX_DRV_UNSUPPORT_FMT	BIT(19)
+#define MTK_WED_WPDMA_GLO_CFG_RX_DRV_UEVENT_PKT_FMT_CHK BIT(20)
+#define MTK_WED_WPDMA_GLO_CFG_RX_DDONE2_WR		BIT(21)
+#define MTK_WED_WPDMA_GLO_CFG_TX_TKID_KEEP		BIT(24)
+#define MTK_WED_WPDMA_GLO_CFG_TX_DMAD_DW3_PREV		BIT(28)
+
 #define MTK_WED_WPDMA_RESET_IDX				0x50c
 #define MTK_WED_WPDMA_RESET_IDX_TX			GENMASK(3, 0)
 #define MTK_WED_WPDMA_RESET_IDX_RX			GENMASK(17, 16)
 
+#define MTK_WED_WPDMA_CTRL				0x518
+#define MTK_WED_WPDMA_CTRL_SDL1_FIXED			BIT(31)
+
 #define MTK_WED_WPDMA_INT_CTRL				0x520
 #define MTK_WED_WPDMA_INT_CTRL_SUBRT_ADV		BIT(21)
 
 #define MTK_WED_WPDMA_INT_MASK				0x524
 
+#define MTK_WED_WPDMA_INT_CTRL_TX			0x530
+#define MTK_WED_WPDMA_INT_CTRL_TX0_DONE_EN		BIT(0)
+#define MTK_WED_WPDMA_INT_CTRL_TX0_DONE_CLR		BIT(1)
+#define MTK_WED_WPDMA_INT_CTRL_TX0_DONE_TRIG		GENMASK(6, 2)
+#define MTK_WED_WPDMA_INT_CTRL_TX1_DONE_EN		BIT(8)
+#define MTK_WED_WPDMA_INT_CTRL_TX1_DONE_CLR		BIT(9)
+#define MTK_WED_WPDMA_INT_CTRL_TX1_DONE_TRIG		GENMASK(14, 10)
+
+#define MTK_WED_WPDMA_INT_CTRL_RX			0x534
+
+#define MTK_WED_WPDMA_INT_CTRL_TX_FREE			0x538
+#define MTK_WED_WPDMA_INT_CTRL_TX_FREE_DONE_EN		BIT(0)
+#define MTK_WED_WPDMA_INT_CTRL_TX_FREE_DONE_CLR		BIT(1)
+#define MTK_WED_WPDMA_INT_CTRL_TX_FREE_DONE_TRIG	GENMASK(6, 2)
+
 #define MTK_WED_PCIE_CFG_BASE				0x560
 
+#define MTK_WED_PCIE_CFG_BASE				0x560
+#define MTK_WED_PCIE_CFG_INTM				0x564
+#define MTK_WED_PCIE_CFG_MSIS				0x568
 #define MTK_WED_PCIE_INT_TRIGGER			0x570
 #define MTK_WED_PCIE_INT_TRIGGER_STATUS			BIT(16)
 
+#define MTK_WED_PCIE_INT_CTRL				0x57c
+#define MTK_WED_PCIE_INT_CTRL_MSK_EN_POLA		BIT(20)
+#define MTK_WED_PCIE_INT_CTRL_SRC_SEL			GENMASK(17, 16)
+#define MTK_WED_PCIE_INT_CTRL_POLL_EN			GENMASK(13, 12)
+
 #define MTK_WED_WPDMA_CFG_BASE				0x580
+#define MTK_WED_WPDMA_CFG_INT_MASK			0x584
+#define MTK_WED_WPDMA_CFG_TX				0x588
+#define MTK_WED_WPDMA_CFG_TX_FREE			0x58c
 
 #define MTK_WED_WPDMA_TX_MIB(_n)			(0x5a0 + (_n) * 4)
 #define MTK_WED_WPDMA_TX_COHERENT_MIB(_n)		(0x5d0 + (_n) * 4)
@@ -203,15 +266,24 @@ struct mtk_wdma_desc {
 #define MTK_WED_WDMA_RESET_IDX_RX			GENMASK(17, 16)
 #define MTK_WED_WDMA_RESET_IDX_DRV			GENMASK(25, 24)
 
+#define MTK_WED_WDMA_INT_CLR				0xa24
+#define MTK_WED_WDMA_INT_CLR_RX_DONE			GENMASK(17, 16)
+
 #define MTK_WED_WDMA_INT_TRIGGER			0xa28
 #define MTK_WED_WDMA_INT_TRIGGER_RX_DONE		GENMASK(17, 16)
 
 #define MTK_WED_WDMA_INT_CTRL				0xa2c
 #define MTK_WED_WDMA_INT_CTRL_POLL_SRC_SEL		GENMASK(17, 16)
 
+#define MTK_WED_WDMA_CFG_BASE				0xaa0
 #define MTK_WED_WDMA_OFFSET0				0xaa4
 #define MTK_WED_WDMA_OFFSET1				0xaa8
 
+#define MTK_WED_WDMA_OFST0_GLO_INTS			GENMASK(15, 0)
+#define MTK_WED_WDMA_OFST0_GLO_CFG			GENMASK(31, 16)
+#define MTK_WED_WDMA_OFST1_TX_CTRL			GENMASK(15, 0)
+#define MTK_WED_WDMA_OFST1_RX_CTRL			GENMASK(31, 16)
+
 #define MTK_WED_WDMA_RX_MIB(_n)				(0xae0 + (_n) * 4)
 #define MTK_WED_WDMA_RX_RECYCLE_MIB(_n)			(0xae8 + (_n) * 4)
 #define MTK_WED_WDMA_RX_PROCESSED_MIB(_n)		(0xaf0 + (_n) * 4)
@@ -221,6 +293,7 @@ struct mtk_wdma_desc {
 #define MTK_WED_RING_OFS_CPU_IDX			0x08
 #define MTK_WED_RING_OFS_DMA_IDX			0x0c
 
+#define MTK_WDMA_RING_TX(_n)				(0x000 + (_n) * 0x10)
 #define MTK_WDMA_RING_RX(_n)				(0x100 + (_n) * 0x10)
 
 #define MTK_WDMA_GLO_CFG				0x204
@@ -234,6 +307,8 @@ struct mtk_wdma_desc {
 #define MTK_WDMA_RESET_IDX_TX				GENMASK(3, 0)
 #define MTK_WDMA_RESET_IDX_RX				GENMASK(17, 16)
 
+#define MTK_WDMA_INT_STATUS				0x220
+
 #define MTK_WDMA_INT_MASK				0x228
 #define MTK_WDMA_INT_MASK_TX_DONE			GENMASK(3, 0)
 #define MTK_WDMA_INT_MASK_RX_DONE			GENMASK(17, 16)

include/linux/soc/mediatek/mtk_wed.h

@@ -14,6 +14,7 @@ struct mtk_wdma_desc;
 struct mtk_wed_ring {
 	struct mtk_wdma_desc *desc;
 	dma_addr_t desc_phys;
+	u32 desc_size;
 	int size;
 
 	u32 reg_base;
@@ -45,10 +46,17 @@ struct mtk_wed_device {
 		struct pci_dev *pci_dev;
 
 		u32 wpdma_phys;
+		u32 wpdma_int;
+		u32 wpdma_mask;
+		u32 wpdma_tx;
+		u32 wpdma_txfree;
 
 		u16 token_start;
 		unsigned int nbuf;
 
+		u8 tx_tbit[MTK_WED_TX_QUEUES];
+		u8 txfree_tbit;
+
 		u32 (*init_buf)(void *ptr, dma_addr_t phys, int token_id);
 		int (*offload_enable)(struct mtk_wed_device *wed);
 		void (*offload_disable)(struct mtk_wed_device *wed);