net: ethernet: mtk_eth_soc: enable nft hw flowtable_offload for MT7988 SoC

Enable hw Packet Process Engine (PPE) for MT7988 SoC.

Tested-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/5e86341b0220a49620dadc02d77970de5ded9efc.1690441576.git.lorenzo@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: LorenzoBianconi

drivers/net/ethernet/mediatek/mtk_eth_soc.c

@@ -5062,6 +5062,9 @@ static const struct mtk_soc_data mt7988_data = {
 	.required_clks = MT7988_CLKS_BITMAP,
 	.required_pctl = false,
 	.version = 3,
+	.offload_version = 2,
+	.hash_offset = 4,
+	.foe_entry_size = MTK_FOE_ENTRY_V3_SIZE,
 	.txrx = {
 		.txd_size = sizeof(struct mtk_tx_dma_v2),
 		.rxd_size = sizeof(struct mtk_rx_dma_v2),

drivers/net/ethernet/mediatek/mtk_ppe.c

@@ -423,20 +423,30 @@ int mtk_foe_entry_set_wdma(struct mtk_eth *eth, struct mtk_foe_entry *entry,
 	struct mtk_foe_mac_info *l2 = mtk_foe_entry_l2(eth, entry);
 	u32 *ib2 = mtk_foe_entry_ib2(eth, entry);
 
-	if (mtk_is_netsys_v2_or_greater(eth)) {
+	switch (eth->soc->version) {
+	case 3:
+		*ib2 &= ~MTK_FOE_IB2_PORT_MG_V2;
+		*ib2 |=  FIELD_PREP(MTK_FOE_IB2_RX_IDX, txq) |
+			 MTK_FOE_IB2_WDMA_WINFO_V2;
+		l2->w3info = FIELD_PREP(MTK_FOE_WINFO_WCID_V3, wcid) |
+			     FIELD_PREP(MTK_FOE_WINFO_BSS_V3, bss);
+		break;
+	case 2:
 		*ib2 &= ~MTK_FOE_IB2_PORT_MG_V2;
 		*ib2 |=  FIELD_PREP(MTK_FOE_IB2_RX_IDX, txq) |
 			 MTK_FOE_IB2_WDMA_WINFO_V2;
 		l2->winfo = FIELD_PREP(MTK_FOE_WINFO_WCID, wcid) |
 			    FIELD_PREP(MTK_FOE_WINFO_BSS, bss);
-	} else {
+		break;
+	default:
 		*ib2 &= ~MTK_FOE_IB2_PORT_MG;
 		*ib2 |= MTK_FOE_IB2_WDMA_WINFO;
 		if (wdma_idx)
 			*ib2 |= MTK_FOE_IB2_WDMA_DEVIDX;
 		l2->vlan2 = FIELD_PREP(MTK_FOE_VLAN2_WINFO_BSS, bss) |
 			    FIELD_PREP(MTK_FOE_VLAN2_WINFO_WCID, wcid) |
 			    FIELD_PREP(MTK_FOE_VLAN2_WINFO_RING, txq);
+		break;
 	}
 
 	return 0;
@@ -964,8 +974,7 @@ void mtk_ppe_start(struct mtk_ppe *ppe)
 	mtk_ppe_init_foe_table(ppe);
 	ppe_w32(ppe, MTK_PPE_TB_BASE, ppe->foe_phys);
 
-	val = MTK_PPE_TB_CFG_ENTRY_80B |
-	      MTK_PPE_TB_CFG_AGE_NON_L4 |
+	val = MTK_PPE_TB_CFG_AGE_NON_L4 |
 	      MTK_PPE_TB_CFG_AGE_UNBIND |
 	      MTK_PPE_TB_CFG_AGE_TCP |
 	      MTK_PPE_TB_CFG_AGE_UDP |
@@ -981,6 +990,8 @@ void mtk_ppe_start(struct mtk_ppe *ppe)
 			 MTK_PPE_ENTRIES_SHIFT);
 	if (mtk_is_netsys_v2_or_greater(ppe->eth))
 		val |= MTK_PPE_TB_CFG_INFO_SEL;
+	if (!mtk_is_netsys_v3_or_greater(ppe->eth))
+		val |= MTK_PPE_TB_CFG_ENTRY_80B;
 	ppe_w32(ppe, MTK_PPE_TB_CFG, val);
 
 	ppe_w32(ppe, MTK_PPE_IP_PROTO_CHK,

drivers/net/ethernet/mediatek/mtk_ppe.h

@@ -85,6 +85,17 @@ enum {
 #define MTK_FOE_WINFO_BSS		GENMASK(5, 0)
 #define MTK_FOE_WINFO_WCID		GENMASK(15, 6)
 
+#define MTK_FOE_WINFO_BSS_V3		GENMASK(23, 16)
+#define MTK_FOE_WINFO_WCID_V3		GENMASK(15, 0)
+
+#define MTK_FOE_WINFO_PAO_USR_INFO	GENMASK(15, 0)
+#define MTK_FOE_WINFO_PAO_TID		GENMASK(19, 16)
+#define MTK_FOE_WINFO_PAO_IS_FIXEDRATE	BIT(20)
+#define MTK_FOE_WINFO_PAO_IS_PRIOR	BIT(21)
+#define MTK_FOE_WINFO_PAO_IS_SP		BIT(22)
+#define MTK_FOE_WINFO_PAO_HF		BIT(23)
+#define MTK_FOE_WINFO_PAO_AMSDU_EN	BIT(24)
+
 enum {
 	MTK_FOE_STATE_INVALID,
 	MTK_FOE_STATE_UNBIND,
@@ -106,8 +117,13 @@ struct mtk_foe_mac_info {
 	u16 pppoe_id;
 	u16 src_mac_lo;
 
+	/* netsys_v2 */
 	u16 minfo;
 	u16 winfo;
+
+	/* netsys_v3 */
+	u32 w3info;
+	u32 wpao;
 };
 
 /* software-only entry type */
@@ -218,6 +234,7 @@ struct mtk_foe_ipv6_6rd {
 
 #define MTK_FOE_ENTRY_V1_SIZE	80
 #define MTK_FOE_ENTRY_V2_SIZE	96
+#define MTK_FOE_ENTRY_V3_SIZE	128
 
 struct mtk_foe_entry {
 	u32 ib1;
@@ -228,7 +245,7 @@ struct mtk_foe_entry {
 		struct mtk_foe_ipv4_dslite dslite;
 		struct mtk_foe_ipv6 ipv6;
 		struct mtk_foe_ipv6_6rd ipv6_6rd;
-		u32 data[23];
+		u32 data[31];
 	};
 };