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path: root/drivers/net/ethernet/mediatek/mtk_ppe.h
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Diffstat (limited to 'drivers/net/ethernet/mediatek/mtk_ppe.h')
-rw-r--r--drivers/net/ethernet/mediatek/mtk_ppe.h288
1 files changed, 288 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.h b/drivers/net/ethernet/mediatek/mtk_ppe.h
new file mode 100644
index 000000000000..242fb8f2ae65
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/mtk_ppe.h
@@ -0,0 +1,288 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (C) 2020 Felix Fietkau <nbd@nbd.name> */
+
+#ifndef __MTK_PPE_H
+#define __MTK_PPE_H
+
+#include <linux/kernel.h>
+#include <linux/bitfield.h>
+
+#define MTK_ETH_PPE_BASE 0xc00
+
+#define MTK_PPE_ENTRIES_SHIFT 3
+#define MTK_PPE_ENTRIES (1024 << MTK_PPE_ENTRIES_SHIFT)
+#define MTK_PPE_HASH_MASK (MTK_PPE_ENTRIES - 1)
+#define MTK_PPE_WAIT_TIMEOUT_US 1000000
+
+#define MTK_FOE_IB1_UNBIND_TIMESTAMP GENMASK(7, 0)
+#define MTK_FOE_IB1_UNBIND_PACKETS GENMASK(23, 8)
+#define MTK_FOE_IB1_UNBIND_PREBIND BIT(24)
+
+#define MTK_FOE_IB1_BIND_TIMESTAMP GENMASK(14, 0)
+#define MTK_FOE_IB1_BIND_KEEPALIVE BIT(15)
+#define MTK_FOE_IB1_BIND_VLAN_LAYER GENMASK(18, 16)
+#define MTK_FOE_IB1_BIND_PPPOE BIT(19)
+#define MTK_FOE_IB1_BIND_VLAN_TAG BIT(20)
+#define MTK_FOE_IB1_BIND_PKT_SAMPLE BIT(21)
+#define MTK_FOE_IB1_BIND_CACHE BIT(22)
+#define MTK_FOE_IB1_BIND_TUNNEL_DECAP BIT(23)
+#define MTK_FOE_IB1_BIND_TTL BIT(24)
+
+#define MTK_FOE_IB1_PACKET_TYPE GENMASK(27, 25)
+#define MTK_FOE_IB1_STATE GENMASK(29, 28)
+#define MTK_FOE_IB1_UDP BIT(30)
+#define MTK_FOE_IB1_STATIC BIT(31)
+
+enum {
+ MTK_PPE_PKT_TYPE_IPV4_HNAPT = 0,
+ MTK_PPE_PKT_TYPE_IPV4_ROUTE = 1,
+ MTK_PPE_PKT_TYPE_BRIDGE = 2,
+ MTK_PPE_PKT_TYPE_IPV4_DSLITE = 3,
+ MTK_PPE_PKT_TYPE_IPV6_ROUTE_3T = 4,
+ MTK_PPE_PKT_TYPE_IPV6_ROUTE_5T = 5,
+ MTK_PPE_PKT_TYPE_IPV6_6RD = 7,
+};
+
+#define MTK_FOE_IB2_QID GENMASK(3, 0)
+#define MTK_FOE_IB2_PSE_QOS BIT(4)
+#define MTK_FOE_IB2_DEST_PORT GENMASK(7, 5)
+#define MTK_FOE_IB2_MULTICAST BIT(8)
+
+#define MTK_FOE_IB2_WHNAT_QID2 GENMASK(13, 12)
+#define MTK_FOE_IB2_WHNAT_DEVIDX BIT(16)
+#define MTK_FOE_IB2_WHNAT_NAT BIT(17)
+
+#define MTK_FOE_IB2_PORT_MG GENMASK(17, 12)
+
+#define MTK_FOE_IB2_PORT_AG GENMASK(23, 18)
+
+#define MTK_FOE_IB2_DSCP GENMASK(31, 24)
+
+#define MTK_FOE_VLAN2_WHNAT_BSS GEMMASK(5, 0)
+#define MTK_FOE_VLAN2_WHNAT_WCID GENMASK(13, 6)
+#define MTK_FOE_VLAN2_WHNAT_RING GENMASK(15, 14)
+
+enum {
+ MTK_FOE_STATE_INVALID,
+ MTK_FOE_STATE_UNBIND,
+ MTK_FOE_STATE_BIND,
+ MTK_FOE_STATE_FIN
+};
+
+struct mtk_foe_mac_info {
+ u16 vlan1;
+ u16 etype;
+
+ u32 dest_mac_hi;
+
+ u16 vlan2;
+ u16 dest_mac_lo;
+
+ u32 src_mac_hi;
+
+ u16 pppoe_id;
+ u16 src_mac_lo;
+};
+
+struct mtk_foe_bridge {
+ u32 dest_mac_hi;
+
+ u16 src_mac_lo;
+ u16 dest_mac_lo;
+
+ u32 src_mac_hi;
+
+ u32 ib2;
+
+ u32 _rsv[5];
+
+ u32 udf_tsid;
+ struct mtk_foe_mac_info l2;
+};
+
+struct mtk_ipv4_tuple {
+ u32 src_ip;
+ u32 dest_ip;
+ union {
+ struct {
+ u16 dest_port;
+ u16 src_port;
+ };
+ struct {
+ u8 protocol;
+ u8 _pad[3]; /* fill with 0xa5a5a5 */
+ };
+ u32 ports;
+ };
+};
+
+struct mtk_foe_ipv4 {
+ struct mtk_ipv4_tuple orig;
+
+ u32 ib2;
+
+ struct mtk_ipv4_tuple new;
+
+ u16 timestamp;
+ u16 _rsv0[3];
+
+ u32 udf_tsid;
+
+ struct mtk_foe_mac_info l2;
+};
+
+struct mtk_foe_ipv4_dslite {
+ struct mtk_ipv4_tuple ip4;
+
+ u32 tunnel_src_ip[4];
+ u32 tunnel_dest_ip[4];
+
+ u8 flow_label[3];
+ u8 priority;
+
+ u32 udf_tsid;
+
+ u32 ib2;
+
+ struct mtk_foe_mac_info l2;
+};
+
+struct mtk_foe_ipv6 {
+ u32 src_ip[4];
+ u32 dest_ip[4];
+
+ union {
+ struct {
+ u8 protocol;
+ u8 _pad[3]; /* fill with 0xa5a5a5 */
+ }; /* 3-tuple */
+ struct {
+ u16 dest_port;
+ u16 src_port;
+ }; /* 5-tuple */
+ u32 ports;
+ };
+
+ u32 _rsv[3];
+
+ u32 udf;
+
+ u32 ib2;
+ struct mtk_foe_mac_info l2;
+};
+
+struct mtk_foe_ipv6_6rd {
+ u32 src_ip[4];
+ u32 dest_ip[4];
+ u16 dest_port;
+ u16 src_port;
+
+ u32 tunnel_src_ip;
+ u32 tunnel_dest_ip;
+
+ u16 hdr_csum;
+ u8 dscp;
+ u8 ttl;
+
+ u8 flag;
+ u8 pad;
+ u8 per_flow_6rd_id;
+ u8 pad2;
+
+ u32 ib2;
+ struct mtk_foe_mac_info l2;
+};
+
+struct mtk_foe_entry {
+ u32 ib1;
+
+ union {
+ struct mtk_foe_bridge bridge;
+ struct mtk_foe_ipv4 ipv4;
+ struct mtk_foe_ipv4_dslite dslite;
+ struct mtk_foe_ipv6 ipv6;
+ struct mtk_foe_ipv6_6rd ipv6_6rd;
+ u32 data[19];
+ };
+};
+
+enum {
+ MTK_PPE_CPU_REASON_TTL_EXCEEDED = 0x02,
+ MTK_PPE_CPU_REASON_OPTION_HEADER = 0x03,
+ MTK_PPE_CPU_REASON_NO_FLOW = 0x07,
+ MTK_PPE_CPU_REASON_IPV4_FRAG = 0x08,
+ MTK_PPE_CPU_REASON_IPV4_DSLITE_FRAG = 0x09,
+ MTK_PPE_CPU_REASON_IPV4_DSLITE_NO_TCP_UDP = 0x0a,
+ MTK_PPE_CPU_REASON_IPV6_6RD_NO_TCP_UDP = 0x0b,
+ MTK_PPE_CPU_REASON_TCP_FIN_SYN_RST = 0x0c,
+ MTK_PPE_CPU_REASON_UN_HIT = 0x0d,
+ MTK_PPE_CPU_REASON_HIT_UNBIND = 0x0e,
+ MTK_PPE_CPU_REASON_HIT_UNBIND_RATE_REACHED = 0x0f,
+ MTK_PPE_CPU_REASON_HIT_BIND_TCP_FIN = 0x10,
+ MTK_PPE_CPU_REASON_HIT_TTL_1 = 0x11,
+ MTK_PPE_CPU_REASON_HIT_BIND_VLAN_VIOLATION = 0x12,
+ MTK_PPE_CPU_REASON_KEEPALIVE_UC_OLD_HDR = 0x13,
+ MTK_PPE_CPU_REASON_KEEPALIVE_MC_NEW_HDR = 0x14,
+ MTK_PPE_CPU_REASON_KEEPALIVE_DUP_OLD_HDR = 0x15,
+ MTK_PPE_CPU_REASON_HIT_BIND_FORCE_CPU = 0x16,
+ MTK_PPE_CPU_REASON_TUNNEL_OPTION_HEADER = 0x17,
+ MTK_PPE_CPU_REASON_MULTICAST_TO_CPU = 0x18,
+ MTK_PPE_CPU_REASON_MULTICAST_TO_GMAC1_CPU = 0x19,
+ MTK_PPE_CPU_REASON_HIT_PRE_BIND = 0x1a,
+ MTK_PPE_CPU_REASON_PACKET_SAMPLING = 0x1b,
+ MTK_PPE_CPU_REASON_EXCEED_MTU = 0x1c,
+ MTK_PPE_CPU_REASON_PPE_BYPASS = 0x1e,
+ MTK_PPE_CPU_REASON_INVALID = 0x1f,
+};
+
+struct mtk_ppe {
+ struct device *dev;
+ void __iomem *base;
+ int version;
+
+ struct mtk_foe_entry *foe_table;
+ dma_addr_t foe_phys;
+
+ void *acct_table;
+};
+
+int mtk_ppe_init(struct mtk_ppe *ppe, struct device *dev, void __iomem *base,
+ int version);
+int mtk_ppe_start(struct mtk_ppe *ppe);
+int mtk_ppe_stop(struct mtk_ppe *ppe);
+
+static inline void
+mtk_foe_entry_clear(struct mtk_ppe *ppe, u16 hash)
+{
+ ppe->foe_table[hash].ib1 = 0;
+ dma_wmb();
+}
+
+static inline int
+mtk_foe_entry_timestamp(struct mtk_ppe *ppe, u16 hash)
+{
+ u32 ib1 = READ_ONCE(ppe->foe_table[hash].ib1);
+
+ if (FIELD_GET(MTK_FOE_IB1_STATE, ib1) != MTK_FOE_STATE_BIND)
+ return -1;
+
+ return FIELD_GET(MTK_FOE_IB1_BIND_TIMESTAMP, ib1);
+}
+
+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,
+ __be32 src_addr, __be16 src_port,
+ __be32 dest_addr, __be16 dest_port);
+int mtk_foe_entry_set_ipv6_tuple(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_commit(struct mtk_ppe *ppe, struct mtk_foe_entry *entry,
+ u16 timestamp);
+int mtk_ppe_debugfs_init(struct mtk_ppe *ppe);
+
+#endif