drivers: net: cpsw: Add helper functions for VLAN ALE implementation

Add helper functions for VLAN ALE implementations for Add, Delete
Dump VLAN related ALE entries

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 113 insertions, 22 deletions

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 9e63bff124fe..534bf7bc34db 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -345,7 +345,7 @@ static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
                 /* program multicast address list into ALE register */
                 netdev_for_each_mc_addr(ha, ndev) {
                         cpsw_ale_add_mcast(priv->ale, (u8 *)ha->addr,
-                                ALE_ALL_PORTS << priv->host_port, 0, 0);
+                                ALE_ALL_PORTS << priv->host_port, 0, 0, 0);
                 }
         }
 }
@@ -592,7 +592,7 @@ static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
         slave_port = cpsw_get_slave_port(priv, slave->slave_num);
 
         cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
-                           1 << slave_port, 0, ALE_MCAST_FWD_2);
+                           1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
 
         slave->phy = phy_connect(priv->ndev, slave->data->phy_id,
                                  &cpsw_adjust_link, slave->data->phy_if);
@@ -624,9 +624,9 @@ static void cpsw_init_host_port(struct cpsw_priv *priv)
         cpsw_ale_control_set(priv->ale, priv->host_port,
                              ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 
-        cpsw_ale_add_ucast(priv->ale, priv->mac_addr, priv->host_port, 0);
+        cpsw_ale_add_ucast(priv->ale, priv->mac_addr, priv->host_port, 0, 0);
         cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
-                           1 << priv->host_port, 0, ALE_MCAST_FWD_2);
+                           1 << priv->host_port, 0, 0, ALE_MCAST_FWD_2);
 }
 
 static int cpsw_ndo_open(struct net_device *ndev)
diff --git a/drivers/net/ethernet/ti/cpsw_ale.c b/drivers/net/ethernet/ti/cpsw_ale.c
index 0e9ccc2cf91f..7fa60d6092ed 100644
--- a/drivers/net/ethernet/ti/cpsw_ale.c
+++ b/drivers/net/ethernet/ti/cpsw_ale.c
@@ -148,7 +148,7 @@ static int cpsw_ale_write(struct cpsw_ale *ale, int idx, u32 *ale_entry)
         return idx;
 }
 
-static int cpsw_ale_match_addr(struct cpsw_ale *ale, u8 *addr)
+int cpsw_ale_match_addr(struct cpsw_ale *ale, u8 *addr, u16 vid)
 {
         u32 ale_entry[ALE_ENTRY_WORDS];
         int type, idx;
@@ -160,6 +160,8 @@ static int cpsw_ale_match_addr(struct cpsw_ale *ale, u8 *addr)
                 type = cpsw_ale_get_entry_type(ale_entry);
                 if (type != ALE_TYPE_ADDR && type != ALE_TYPE_VLAN_ADDR)
                         continue;
+                if (cpsw_ale_get_vlan_id(ale_entry) != vid)
+                        continue;
                 cpsw_ale_get_addr(ale_entry, entry_addr);
                 if (memcmp(entry_addr, addr, 6) == 0)
                         return idx;
@@ -167,6 +169,22 @@ static int cpsw_ale_match_addr(struct cpsw_ale *ale, u8 *addr)
         return -ENOENT;
 }
 
+int cpsw_ale_match_vlan(struct cpsw_ale *ale, u16 vid)
+{
+        u32 ale_entry[ALE_ENTRY_WORDS];
+        int type, idx;
+
+        for (idx = 0; idx < ale->params.ale_entries; idx++) {
+                cpsw_ale_read(ale, idx, ale_entry);
+                type = cpsw_ale_get_entry_type(ale_entry);
+                if (type != ALE_TYPE_VLAN)
+                        continue;
+                if (cpsw_ale_get_vlan_id(ale_entry) == vid)
+                        return idx;
+        }
+        return -ENOENT;
+}
+
 static int cpsw_ale_match_free(struct cpsw_ale *ale)
 {
         u32 ale_entry[ALE_ENTRY_WORDS];
@@ -274,19 +292,32 @@ int cpsw_ale_flush(struct cpsw_ale *ale, int port_mask)
         return 0;
 }
 
-int cpsw_ale_add_ucast(struct cpsw_ale *ale, u8 *addr, int port, int flags)
+static inline void cpsw_ale_set_vlan_entry_type(u32 *ale_entry,
+                                                int flags, u16 vid)
+{
+        if (flags & ALE_VLAN) {
+                cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_VLAN_ADDR);
+                cpsw_ale_set_vlan_id(ale_entry, vid);
+        } else {
+                cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_ADDR);
+        }
+}
+
+int cpsw_ale_add_ucast(struct cpsw_ale *ale, u8 *addr, int port,
+                       int flags, u16 vid)
 {
         u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0};
         int idx;
 
-        cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_ADDR);
+        cpsw_ale_set_vlan_entry_type(ale_entry, flags, vid);
+
         cpsw_ale_set_addr(ale_entry, addr);
         cpsw_ale_set_ucast_type(ale_entry, ALE_UCAST_PERSISTANT);
         cpsw_ale_set_secure(ale_entry, (flags & ALE_SECURE) ? 1 : 0);
         cpsw_ale_set_blocked(ale_entry, (flags & ALE_BLOCKED) ? 1 : 0);
         cpsw_ale_set_port_num(ale_entry, port);
 
-        idx = cpsw_ale_match_addr(ale, addr);
+        idx = cpsw_ale_match_addr(ale, addr, (flags & ALE_VLAN) ? vid : 0);
         if (idx < 0)
                 idx = cpsw_ale_match_free(ale);
         if (idx < 0)
@@ -298,12 +329,13 @@ int cpsw_ale_add_ucast(struct cpsw_ale *ale, u8 *addr, int port, int flags)
         return 0;
 }
 
-int cpsw_ale_del_ucast(struct cpsw_ale *ale, u8 *addr, int port)
+int cpsw_ale_del_ucast(struct cpsw_ale *ale, u8 *addr, int port,
+                       int flags, u16 vid)
 {
         u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0};
         int idx;
 
-        idx = cpsw_ale_match_addr(ale, addr);
+        idx = cpsw_ale_match_addr(ale, addr, (flags & ALE_VLAN) ? vid : 0);
         if (idx < 0)
                 return -ENOENT;
 
@@ -313,18 +345,19 @@ int cpsw_ale_del_ucast(struct cpsw_ale *ale, u8 *addr, int port)
 }
 
 int cpsw_ale_add_mcast(struct cpsw_ale *ale, u8 *addr, int port_mask,
-                        int super, int mcast_state)
+                       int flags, u16 vid, int mcast_state)
 {
         u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0};
         int idx, mask;
 
-        idx = cpsw_ale_match_addr(ale, addr);
+        idx = cpsw_ale_match_addr(ale, addr, (flags & ALE_VLAN) ? vid : 0);
         if (idx >= 0)
                 cpsw_ale_read(ale, idx, ale_entry);
 
-        cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_ADDR);
+        cpsw_ale_set_vlan_entry_type(ale_entry, flags, vid);
+
         cpsw_ale_set_addr(ale_entry, addr);
-        cpsw_ale_set_super(ale_entry, super);
+        cpsw_ale_set_super(ale_entry, (flags & ALE_BLOCKED) ? 1 : 0);
         cpsw_ale_set_mcast_state(ale_entry, mcast_state);
 
         mask = cpsw_ale_get_port_mask(ale_entry);
@@ -342,12 +375,13 @@ int cpsw_ale_add_mcast(struct cpsw_ale *ale, u8 *addr, int port_mask,
         return 0;
 }
 
-int cpsw_ale_del_mcast(struct cpsw_ale *ale, u8 *addr, int port_mask)
+int cpsw_ale_del_mcast(struct cpsw_ale *ale, u8 *addr, int port_mask,
+                       int flags, u16 vid)
 {
         u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0};
         int idx;
 
-        idx = cpsw_ale_match_addr(ale, addr);
+        idx = cpsw_ale_match_addr(ale, addr, (flags & ALE_VLAN) ? vid : 0);
         if (idx < 0)
                 return -EINVAL;
 
@@ -362,6 +396,55 @@ int cpsw_ale_del_mcast(struct cpsw_ale *ale, u8 *addr, int port_mask)
         return 0;
 }
 
+int cpsw_ale_add_vlan(struct cpsw_ale *ale, u16 vid, int port, int untag,
+                      int reg_mcast, int unreg_mcast)
+{
+        u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0};
+        int idx;
+
+        idx = cpsw_ale_match_vlan(ale, vid);
+        if (idx >= 0)
+                cpsw_ale_read(ale, idx, ale_entry);
+
+        cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_VLAN);
+        cpsw_ale_set_vlan_id(ale_entry, vid);
+
+        cpsw_ale_set_vlan_untag_force(ale_entry, untag);
+        cpsw_ale_set_vlan_reg_mcast(ale_entry, reg_mcast);
+        cpsw_ale_set_vlan_unreg_mcast(ale_entry, unreg_mcast);
+        cpsw_ale_set_vlan_member_list(ale_entry, port);
+
+        if (idx < 0)
+                idx = cpsw_ale_match_free(ale);
+        if (idx < 0)
+                idx = cpsw_ale_find_ageable(ale);
+        if (idx < 0)
+                return -ENOMEM;
+
+        cpsw_ale_write(ale, idx, ale_entry);
+        return 0;
+}
+
+int cpsw_ale_del_vlan(struct cpsw_ale *ale, u16 vid, int port_mask)
+{
+        u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0};
+        int idx;
+
+        idx = cpsw_ale_match_vlan(ale, vid);
+        if (idx < 0)
+                return -ENOENT;
+
+        cpsw_ale_read(ale, idx, ale_entry);
+
+        if (port_mask)
+                cpsw_ale_set_vlan_member_list(ale_entry, port_mask);
+        else
+                cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_FREE);
+
+        cpsw_ale_write(ale, idx, ale_entry);
+        return 0;
+}
+
 struct ale_control_info {
         const char      *name;
         int             offset, port_offset;
diff --git a/drivers/net/ethernet/ti/cpsw_ale.h b/drivers/net/ethernet/ti/cpsw_ale.h
index 2bd09cbce522..a002417f952b 100644
--- a/drivers/net/ethernet/ti/cpsw_ale.h
+++ b/drivers/net/ethernet/ti/cpsw_ale.h
@@ -64,8 +64,10 @@ enum cpsw_ale_port_state {
 };
 
 /* ALE unicast entry flags - passed into cpsw_ale_add_ucast() */
-#define ALE_SECURE                      1
-#define ALE_BLOCKED                     2
+#define ALE_SECURE                      BIT(0)
+#define ALE_BLOCKED                     BIT(1)
+#define ALE_SUPER                       BIT(2)
+#define ALE_VLAN                        BIT(3)
 
 #define ALE_MCAST_FWD                   0
 #define ALE_MCAST_BLOCK_LEARN_FWD       1
@@ -81,11 +83,17 @@ void cpsw_ale_stop(struct cpsw_ale *ale);
 int cpsw_ale_set_ageout(struct cpsw_ale *ale, int ageout);
 int cpsw_ale_flush(struct cpsw_ale *ale, int port_mask);
 int cpsw_ale_flush_multicast(struct cpsw_ale *ale, int port_mask);
-int cpsw_ale_add_ucast(struct cpsw_ale *ale, u8 *addr, int port, int flags);
-int cpsw_ale_del_ucast(struct cpsw_ale *ale, u8 *addr, int port);
+int cpsw_ale_add_ucast(struct cpsw_ale *ale, u8 *addr, int port,
+                       int flags, u16 vid);
+int cpsw_ale_del_ucast(struct cpsw_ale *ale, u8 *addr, int port,
+                       int flags, u16 vid);
 int cpsw_ale_add_mcast(struct cpsw_ale *ale, u8 *addr, int port_mask,
-                        int super, int mcast_state);
-int cpsw_ale_del_mcast(struct cpsw_ale *ale, u8 *addr, int port_mask);
+                       int flags, u16 vid, int mcast_state);
+int cpsw_ale_del_mcast(struct cpsw_ale *ale, u8 *addr, int port_mask,
+                       int flags, u16 vid);
+int cpsw_ale_add_vlan(struct cpsw_ale *ale, u16 vid, int port, int untag,
+                        int reg_mcast, int unreg_mcast);
+int cpsw_ale_del_vlan(struct cpsw_ale *ale, u16 vid, int port);
 
 int cpsw_ale_control_get(struct cpsw_ale *ale, int port, int control);
 int cpsw_ale_control_set(struct cpsw_ale *ale, int port,