net: ethernet: mtk_eth_soc: introduce flow offloading support for mt7986

Introduce hw flow offload support for mt7986 chipset. PPE is not enabled
yet in mt7986 since mt76 support is not available yet.
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

@@ -1906,12 +1906,14 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget,
 		bytes += skb->len;
 
 		if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) {
+			reason = FIELD_GET(MTK_RXD5_PPE_CPU_REASON, trxd.rxd5);
 			hash = trxd.rxd5 & MTK_RXD5_FOE_ENTRY;
 			if (hash != MTK_RXD5_FOE_ENTRY)
 				skb_set_hash(skb, jhash_1word(hash, 0),
 					     PKT_HASH_TYPE_L4);
 			rxdcsum = &trxd.rxd3;
 		} else {
+			reason = FIELD_GET(MTK_RXD4_PPE_CPU_REASON, trxd.rxd4);
 			hash = trxd.rxd4 & MTK_RXD4_FOE_ENTRY;
 			if (hash != MTK_RXD4_FOE_ENTRY)
 				skb_set_hash(skb, jhash_1word(hash, 0),
@@ -1925,7 +1927,6 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget,
 			skb_checksum_none_assert(skb);
 		skb->protocol = eth_type_trans(skb, netdev);
 
-		reason = FIELD_GET(MTK_RXD4_PPE_CPU_REASON, trxd.rxd4);
 		if (reason == MTK_PPE_CPU_REASON_HIT_UNBIND_RATE_REACHED)
 			mtk_ppe_check_skb(eth->ppe[0], skb, hash);
 
@@ -4233,7 +4234,7 @@ static const struct mtk_soc_data mt7621_data = {
 	.required_pctl = false,
 	.offload_version = 2,
 	.hash_offset = 2,
-	.foe_entry_size = sizeof(struct mtk_foe_entry),
+	.foe_entry_size = sizeof(struct mtk_foe_entry) - 16,
 	.txrx = {
 		.txd_size = sizeof(struct mtk_tx_dma),
 		.rxd_size = sizeof(struct mtk_rx_dma),
@@ -4253,7 +4254,7 @@ static const struct mtk_soc_data mt7622_data = {
 	.required_pctl = false,
 	.offload_version = 2,
 	.hash_offset = 2,
-	.foe_entry_size = sizeof(struct mtk_foe_entry),
+	.foe_entry_size = sizeof(struct mtk_foe_entry) - 16,
 	.txrx = {
 		.txd_size = sizeof(struct mtk_tx_dma),
 		.rxd_size = sizeof(struct mtk_rx_dma),
@@ -4272,7 +4273,7 @@ static const struct mtk_soc_data mt7623_data = {
 	.required_pctl = true,
 	.offload_version = 2,
 	.hash_offset = 2,
-	.foe_entry_size = sizeof(struct mtk_foe_entry),
+	.foe_entry_size = sizeof(struct mtk_foe_entry) - 16,
 	.txrx = {
 		.txd_size = sizeof(struct mtk_tx_dma),
 		.rxd_size = sizeof(struct mtk_rx_dma),
@@ -4304,9 +4305,11 @@ static const struct mtk_soc_data mt7986_data = {
 	.reg_map = &mt7986_reg_map,
 	.ana_rgc3 = 0x128,
 	.caps = MT7986_CAPS,
+	.hw_features = MTK_HW_FEATURES,
 	.required_clks = MT7986_CLKS_BITMAP,
 	.required_pctl = false,
 	.hash_offset = 4,
+	.foe_entry_size = sizeof(struct mtk_foe_entry),
 	.txrx = {
 		.txd_size = sizeof(struct mtk_tx_dma_v2),
 		.rxd_size = sizeof(struct mtk_rx_dma_v2),

drivers/net/ethernet/mediatek/mtk_eth_soc.h

@@ -1153,6 +1153,78 @@ mtk_foe_get_entry(struct mtk_ppe *ppe, u16 hash)
 	return ppe->foe_table + hash * soc->foe_entry_size;
 }
 
+static inline u32 mtk_get_ib1_ts_mask(struct mtk_eth *eth)
+{
+	if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2))
+		return MTK_FOE_IB1_BIND_TIMESTAMP_V2;
+
+	return MTK_FOE_IB1_BIND_TIMESTAMP;
+}
+
+static inline u32 mtk_get_ib1_ppoe_mask(struct mtk_eth *eth)
+{
+	if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2))
+		return MTK_FOE_IB1_BIND_PPPOE_V2;
+
+	return MTK_FOE_IB1_BIND_PPPOE;
+}
+
+static inline u32 mtk_get_ib1_vlan_tag_mask(struct mtk_eth *eth)
+{
+	if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2))
+		return MTK_FOE_IB1_BIND_VLAN_TAG_V2;
+
+	return MTK_FOE_IB1_BIND_VLAN_TAG;
+}
+
+static inline u32 mtk_get_ib1_vlan_layer_mask(struct mtk_eth *eth)
+{
+	if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2))
+		return MTK_FOE_IB1_BIND_VLAN_LAYER_V2;
+
+	return MTK_FOE_IB1_BIND_VLAN_LAYER;
+}
+
+static inline u32 mtk_prep_ib1_vlan_layer(struct mtk_eth *eth, u32 val)
+{
+	if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2))
+		return FIELD_PREP(MTK_FOE_IB1_BIND_VLAN_LAYER_V2, val);
+
+	return FIELD_PREP(MTK_FOE_IB1_BIND_VLAN_LAYER, val);
+}
+
+static inline u32 mtk_get_ib1_vlan_layer(struct mtk_eth *eth, u32 val)
+{
+	if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2))
+		return FIELD_GET(MTK_FOE_IB1_BIND_VLAN_LAYER_V2, val);
+
+	return FIELD_GET(MTK_FOE_IB1_BIND_VLAN_LAYER, val);
+}
+
+static inline u32 mtk_get_ib1_pkt_type_mask(struct mtk_eth *eth)
+{
+	if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2))
+		return MTK_FOE_IB1_PACKET_TYPE_V2;
+
+	return MTK_FOE_IB1_PACKET_TYPE;
+}
+
+static inline u32 mtk_get_ib1_pkt_type(struct mtk_eth *eth, u32 val)
+{
+	if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2))
+		return FIELD_GET(MTK_FOE_IB1_PACKET_TYPE_V2, val);
+
+	return FIELD_GET(MTK_FOE_IB1_PACKET_TYPE, val);
+}
+
+static inline u32 mtk_get_ib2_multicast_mask(struct mtk_eth *eth)
+{
+	if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2))
+		return MTK_FOE_IB2_MULTICAST_V2;
+
+	return MTK_FOE_IB2_MULTICAST;
+}
+
 /* read the hardware status register */
 void mtk_stats_update_mac(struct mtk_mac *mac);
 

drivers/net/ethernet/mediatek/mtk_ppe.h

@@ -32,6 +32,15 @@
 #define MTK_FOE_IB1_UDP			BIT(30)
 #define MTK_FOE_IB1_STATIC		BIT(31)
 
+/* CONFIG_MEDIATEK_NETSYS_V2 */
+#define MTK_FOE_IB1_BIND_TIMESTAMP_V2	GENMASK(7, 0)
+#define MTK_FOE_IB1_BIND_VLAN_LAYER_V2	GENMASK(16, 14)
+#define MTK_FOE_IB1_BIND_PPPOE_V2	BIT(17)
+#define MTK_FOE_IB1_BIND_VLAN_TAG_V2	BIT(18)
+#define MTK_FOE_IB1_BIND_CACHE_V2	BIT(20)
+#define MTK_FOE_IB1_BIND_TTL_V2		BIT(22)
+#define MTK_FOE_IB1_PACKET_TYPE_V2	GENMASK(27, 23)
+
 enum {
 	MTK_PPE_PKT_TYPE_IPV4_HNAPT = 0,
 	MTK_PPE_PKT_TYPE_IPV4_ROUTE = 1,
@@ -53,14 +62,25 @@ enum {
 
 #define MTK_FOE_IB2_PORT_MG		GENMASK(17, 12)
 
+#define MTK_FOE_IB2_RX_IDX		GENMASK(18, 17)
 #define MTK_FOE_IB2_PORT_AG		GENMASK(23, 18)
 
 #define MTK_FOE_IB2_DSCP		GENMASK(31, 24)
 
+/* CONFIG_MEDIATEK_NETSYS_V2 */
+#define MTK_FOE_IB2_PORT_MG_V2		BIT(7)
+#define MTK_FOE_IB2_DEST_PORT_V2	GENMASK(12, 9)
+#define MTK_FOE_IB2_MULTICAST_V2	BIT(13)
+#define MTK_FOE_IB2_WDMA_WINFO_V2	BIT(19)
+#define MTK_FOE_IB2_PORT_AG_V2		GENMASK(23, 20)
+
 #define MTK_FOE_VLAN2_WINFO_BSS		GENMASK(5, 0)
 #define MTK_FOE_VLAN2_WINFO_WCID	GENMASK(13, 6)
 #define MTK_FOE_VLAN2_WINFO_RING	GENMASK(15, 14)
 
+#define MTK_FOE_WINFO_BSS		GENMASK(5, 0)
+#define MTK_FOE_WINFO_WCID		GENMASK(15, 6)
+
 enum {
 	MTK_FOE_STATE_INVALID,
 	MTK_FOE_STATE_UNBIND,
@@ -81,6 +101,9 @@ struct mtk_foe_mac_info {
 
 	u16 pppoe_id;
 	u16 src_mac_lo;
+
+	u16 minfo;
+	u16 winfo;
 };
 
 /* software-only entry type */
@@ -198,7 +221,7 @@ struct mtk_foe_entry {
 		struct mtk_foe_ipv4_dslite dslite;
 		struct mtk_foe_ipv6 ipv6;
 		struct mtk_foe_ipv6_6rd ipv6_6rd;
-		u32 data[19];
+		u32 data[23];
 	};
 };
 
@@ -306,20 +329,27 @@ mtk_ppe_check_skb(struct mtk_ppe *ppe, struct sk_buff *skb, u16 hash)
 	__mtk_ppe_check_skb(ppe, skb, hash);
 }
 
-int mtk_foe_entry_prepare(struct mtk_foe_entry *entry, int type, int l4proto,
-			  u8 pse_port, u8 *src_mac, u8 *dest_mac);
-int mtk_foe_entry_set_pse_port(struct mtk_foe_entry *entry, u8 port);
-int mtk_foe_entry_set_ipv4_tuple(struct mtk_foe_entry *entry, bool orig,
+int mtk_foe_entry_prepare(struct mtk_eth *eth, struct mtk_foe_entry *entry,
+			  int type, int l4proto, u8 pse_port, u8 *src_mac,
+			  u8 *dest_mac);
+int mtk_foe_entry_set_pse_port(struct mtk_eth *eth,
+			       struct mtk_foe_entry *entry, u8 port);
+int mtk_foe_entry_set_ipv4_tuple(struct mtk_eth *eth,
+				 struct mtk_foe_entry *entry, bool orig,
 				 __be32 src_addr, __be16 src_port,
 				 __be32 dest_addr, __be16 dest_port);
-int mtk_foe_entry_set_ipv6_tuple(struct mtk_foe_entry *entry,
+int mtk_foe_entry_set_ipv6_tuple(struct mtk_eth *eth,
+				 struct mtk_foe_entry *entry,
 				 __be32 *src_addr, __be16 src_port,
 				 __be32 *dest_addr, __be16 dest_port);
-int mtk_foe_entry_set_dsa(struct mtk_foe_entry *entry, int port);
-int mtk_foe_entry_set_vlan(struct mtk_foe_entry *entry, int vid);
-int mtk_foe_entry_set_pppoe(struct mtk_foe_entry *entry, int sid);
-int mtk_foe_entry_set_wdma(struct mtk_foe_entry *entry, int wdma_idx, int txq,
-			   int bss, int wcid);
+int mtk_foe_entry_set_dsa(struct mtk_eth *eth, struct mtk_foe_entry *entry,
+			  int port);
+int mtk_foe_entry_set_vlan(struct mtk_eth *eth, struct mtk_foe_entry *entry,
+			   int vid);
+int mtk_foe_entry_set_pppoe(struct mtk_eth *eth, struct mtk_foe_entry *entry,
+			    int sid);
+int mtk_foe_entry_set_wdma(struct mtk_eth *eth, struct mtk_foe_entry *entry,
+			   int wdma_idx, int txq, int bss, int wcid);
 int mtk_foe_entry_commit(struct mtk_ppe *ppe, struct mtk_flow_entry *entry);
 void mtk_foe_entry_clear(struct mtk_ppe *ppe, struct mtk_flow_entry *entry);
 int mtk_foe_entry_idle_time(struct mtk_ppe *ppe, struct mtk_flow_entry *entry);

drivers/net/ethernet/mediatek/mtk_ppe_offload.c

@@ -52,18 +52,19 @@ static const struct rhashtable_params mtk_flow_ht_params = {
 };
 
 static int
-mtk_flow_set_ipv4_addr(struct mtk_foe_entry *foe, struct mtk_flow_data *data,
-		       bool egress)
+mtk_flow_set_ipv4_addr(struct mtk_eth *eth, struct mtk_foe_entry *foe,
+		       struct mtk_flow_data *data, bool egress)
 {
-	return mtk_foe_entry_set_ipv4_tuple(foe, egress,
+	return mtk_foe_entry_set_ipv4_tuple(eth, foe, egress,
 					    data->v4.src_addr, data->src_port,
 					    data->v4.dst_addr, data->dst_port);
 }
 
 static int
-mtk_flow_set_ipv6_addr(struct mtk_foe_entry *foe, struct mtk_flow_data *data)
+mtk_flow_set_ipv6_addr(struct mtk_eth *eth, struct mtk_foe_entry *foe,
+		       struct mtk_flow_data *data)
 {
-	return mtk_foe_entry_set_ipv6_tuple(foe,
+	return mtk_foe_entry_set_ipv6_tuple(eth, foe,
 					    data->v6.src_addr.s6_addr32, data->src_port,
 					    data->v6.dst_addr.s6_addr32, data->dst_port);
 }
@@ -190,16 +191,29 @@ mtk_flow_set_output_device(struct mtk_eth *eth, struct mtk_foe_entry *foe,
 	int pse_port, dsa_port;
 
 	if (mtk_flow_get_wdma_info(dev, dest_mac, &info) == 0) {
-		mtk_foe_entry_set_wdma(foe, info.wdma_idx, info.queue, info.bss,
-				       info.wcid);
+		mtk_foe_entry_set_wdma(eth, foe, info.wdma_idx, info.queue,
+				       info.bss, info.wcid);
+		if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) {
+			switch (info.wdma_idx) {
+			case 0:
+				pse_port = 8;
+				break;
+			case 1:
+				pse_port = 9;
+				break;
+			default:
+				return -EINVAL;
+			}
+		} else {
 			pse_port = 3;
+		}
 		*wed_index = info.wdma_idx;
 		goto out;
 	}
 
 	dsa_port = mtk_flow_get_dsa_port(&dev);
 	if (dsa_port >= 0)
-		mtk_foe_entry_set_dsa(foe, dsa_port);
+		mtk_foe_entry_set_dsa(eth, foe, dsa_port);
 
 	if (dev == eth->netdev[0])
 		pse_port = 1;
@@ -209,7 +223,7 @@ mtk_flow_set_output_device(struct mtk_eth *eth, struct mtk_foe_entry *foe,
 		return -EOPNOTSUPP;
 
 out:
-	mtk_foe_entry_set_pse_port(foe, pse_port);
+	mtk_foe_entry_set_pse_port(eth, foe, pse_port);
 
 	return 0;
 }
@@ -333,9 +347,8 @@ mtk_flow_offload_replace(struct mtk_eth *eth, struct flow_cls_offload *f)
 	    !is_valid_ether_addr(data.eth.h_dest))
 		return -EINVAL;
 
-	err = mtk_foe_entry_prepare(&foe, offload_type, l4proto, 0,
-				    data.eth.h_source,
-				    data.eth.h_dest);
+	err = mtk_foe_entry_prepare(eth, &foe, offload_type, l4proto, 0,
+				    data.eth.h_source, data.eth.h_dest);
 	if (err)
 		return err;
 
@@ -360,7 +373,7 @@ mtk_flow_offload_replace(struct mtk_eth *eth, struct flow_cls_offload *f)
 		data.v4.src_addr = addrs.key->src;
 		data.v4.dst_addr = addrs.key->dst;
 
-		mtk_flow_set_ipv4_addr(&foe, &data, false);
+		mtk_flow_set_ipv4_addr(eth, &foe, &data, false);
 	}
 
 	if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
@@ -371,7 +384,7 @@ mtk_flow_offload_replace(struct mtk_eth *eth, struct flow_cls_offload *f)
 		data.v6.src_addr = addrs.key->src;
 		data.v6.dst_addr = addrs.key->dst;
 
-		mtk_flow_set_ipv6_addr(&foe, &data);
+		mtk_flow_set_ipv6_addr(eth, &foe, &data);
 	}
 
 	flow_action_for_each(i, act, &rule->action) {
@@ -401,7 +414,7 @@ mtk_flow_offload_replace(struct mtk_eth *eth, struct flow_cls_offload *f)
 	}
 
 	if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
-		err = mtk_flow_set_ipv4_addr(&foe, &data, true);
+		err = mtk_flow_set_ipv4_addr(eth, &foe, &data, true);
 		if (err)
 			return err;
 	}
@@ -413,10 +426,10 @@ mtk_flow_offload_replace(struct mtk_eth *eth, struct flow_cls_offload *f)
 		if (data.vlan.proto != htons(ETH_P_8021Q))
 			return -EOPNOTSUPP;
 
-		mtk_foe_entry_set_vlan(&foe, data.vlan.id);
+		mtk_foe_entry_set_vlan(eth, &foe, data.vlan.id);
 	}
 	if (data.pppoe.num == 1)
-		mtk_foe_entry_set_pppoe(&foe, data.pppoe.sid);
+		mtk_foe_entry_set_pppoe(eth, &foe, data.pppoe.sid);
 
 	err = mtk_flow_set_output_device(eth, &foe, odev, data.eth.h_dest,
 					 &wed_index);

drivers/net/ethernet/mediatek/mtk_ppe_regs.h

@@ -21,6 +21,9 @@
 #define MTK_PPE_GLO_CFG_BUSY			BIT(31)
 
 #define MTK_PPE_FLOW_CFG			0x204
+#define MTK_PPE_MD_TOAP_BYP_CRSN0		BIT(1)
+#define MTK_PPE_MD_TOAP_BYP_CRSN1		BIT(2)
+#define MTK_PPE_MD_TOAP_BYP_CRSN2		BIT(3)
 #define MTK_PPE_FLOW_CFG_IP4_TCP_FRAG		BIT(6)
 #define MTK_PPE_FLOW_CFG_IP4_UDP_FRAG		BIT(7)
 #define MTK_PPE_FLOW_CFG_IP6_3T_ROUTE		BIT(8)
@@ -54,6 +57,7 @@
 #define MTK_PPE_TB_CFG_HASH_MODE		GENMASK(15, 14)
 #define MTK_PPE_TB_CFG_SCAN_MODE		GENMASK(17, 16)
 #define MTK_PPE_TB_CFG_HASH_DEBUG		GENMASK(19, 18)
+#define MTK_PPE_TB_CFG_INFO_SEL			BIT(20)
 
 enum {
 	MTK_PPE_SCAN_MODE_DISABLED,
@@ -112,6 +116,8 @@ enum {
 #define MTK_PPE_DEFAULT_CPU_PORT		0x248
 #define MTK_PPE_DEFAULT_CPU_PORT_MASK(_n)	(GENMASK(2, 0) << ((_n) * 4))
 
+#define MTK_PPE_DEFAULT_CPU_PORT1		0x24c
+
 #define MTK_PPE_MTU_DROP			0x308
 
 #define MTK_PPE_VLAN_MTU0			0x30c
@@ -141,4 +147,6 @@ enum {
 #define MTK_PPE_MIB_CACHE_CTL_EN		BIT(0)
 #define MTK_PPE_MIB_CACHE_CTL_FLUSH		BIT(2)
 
+#define MTK_PPE_SBW_CTRL			0x374
+
 #endif