net: dsa: mv88e6xxx: flush VTU and STU entries
[firefly-linux-kernel-4.4.55.git] / drivers / net / dsa / mv88e6xxx.c
index 62c1c471dc9b2f135503bf0dbcd586579b792495..175353a659d4ff904e8972ae27af3f385c3d9401 100644 (file)
@@ -1182,8 +1182,36 @@ int mv88e6xxx_port_stp_update(struct dsa_switch *ds, int port, u8 state)
        return 0;
 }
 
-static int __mv88e6xxx_write_addr(struct dsa_switch *ds,
-                                 const unsigned char *addr)
+static int _mv88e6xxx_vtu_wait(struct dsa_switch *ds)
+{
+       return _mv88e6xxx_wait(ds, REG_GLOBAL, GLOBAL_VTU_OP,
+                              GLOBAL_VTU_OP_BUSY);
+}
+
+static int _mv88e6xxx_vtu_cmd(struct dsa_switch *ds, u16 op)
+{
+       int ret;
+
+       ret = _mv88e6xxx_reg_write(ds, REG_GLOBAL, GLOBAL_VTU_OP, op);
+       if (ret < 0)
+               return ret;
+
+       return _mv88e6xxx_vtu_wait(ds);
+}
+
+static int _mv88e6xxx_vtu_stu_flush(struct dsa_switch *ds)
+{
+       int ret;
+
+       ret = _mv88e6xxx_vtu_wait(ds);
+       if (ret < 0)
+               return ret;
+
+       return _mv88e6xxx_vtu_cmd(ds, GLOBAL_VTU_OP_FLUSH_ALL);
+}
+
+static int _mv88e6xxx_atu_mac_write(struct dsa_switch *ds,
+                                   const unsigned char *addr)
 {
        int i, ret;
 
@@ -1198,7 +1226,7 @@ static int __mv88e6xxx_write_addr(struct dsa_switch *ds,
        return 0;
 }
 
-static int __mv88e6xxx_read_addr(struct dsa_switch *ds, unsigned char *addr)
+static int _mv88e6xxx_atu_mac_read(struct dsa_switch *ds, unsigned char *addr)
 {
        int i, ret;
 
@@ -1214,29 +1242,74 @@ static int __mv88e6xxx_read_addr(struct dsa_switch *ds, unsigned char *addr)
        return 0;
 }
 
-static int __mv88e6xxx_port_fdb_cmd(struct dsa_switch *ds, int port,
-                                   const unsigned char *addr, int state)
+static int _mv88e6xxx_atu_load(struct dsa_switch *ds,
+                              struct mv88e6xxx_atu_entry *entry)
 {
-       struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
-       u8 fid = ps->fid[port];
+       u16 reg = 0;
        int ret;
 
        ret = _mv88e6xxx_atu_wait(ds);
        if (ret < 0)
                return ret;
 
-       ret = __mv88e6xxx_write_addr(ds, addr);
+       ret = _mv88e6xxx_atu_mac_write(ds, entry->mac);
        if (ret < 0)
                return ret;
 
-       ret = _mv88e6xxx_reg_write(ds, REG_GLOBAL, GLOBAL_ATU_DATA,
-                                  (0x10 << port) | state);
-       if (ret)
+       if (entry->state != GLOBAL_ATU_DATA_STATE_UNUSED) {
+               unsigned int mask, shift;
+
+               if (entry->trunk) {
+                       reg |= GLOBAL_ATU_DATA_TRUNK;
+                       mask = GLOBAL_ATU_DATA_TRUNK_ID_MASK;
+                       shift = GLOBAL_ATU_DATA_TRUNK_ID_SHIFT;
+               } else {
+                       mask = GLOBAL_ATU_DATA_PORT_VECTOR_MASK;
+                       shift = GLOBAL_ATU_DATA_PORT_VECTOR_SHIFT;
+               }
+
+               reg |= (entry->portv_trunkid << shift) & mask;
+       }
+
+       reg |= entry->state & GLOBAL_ATU_DATA_STATE_MASK;
+
+       ret = _mv88e6xxx_reg_write(ds, REG_GLOBAL, GLOBAL_ATU_DATA, reg);
+       if (ret < 0)
                return ret;
 
-       ret = _mv88e6xxx_atu_cmd(ds, fid, GLOBAL_ATU_OP_LOAD_DB);
+       return _mv88e6xxx_atu_cmd(ds, entry->fid, GLOBAL_ATU_OP_LOAD_DB);
+}
+
+static int _mv88e6xxx_port_vid_to_fid(struct dsa_switch *ds, int port, u16 vid)
+{
+       struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
 
-       return ret;
+       if (vid == 0)
+               return ps->fid[port];
+
+       return -ENOENT;
+}
+
+static int _mv88e6xxx_port_fdb_load(struct dsa_switch *ds, int port,
+                                   const unsigned char *addr, u16 vid,
+                                   u8 state)
+{
+       struct mv88e6xxx_atu_entry entry = { 0 };
+       int ret;
+
+       ret = _mv88e6xxx_port_vid_to_fid(ds, port, vid);
+       if (ret < 0)
+               return ret;
+
+       entry.fid = ret;
+       entry.state = state;
+       ether_addr_copy(entry.mac, addr);
+       if (state != GLOBAL_ATU_DATA_STATE_UNUSED) {
+               entry.trunk = false;
+               entry.portv_trunkid = BIT(port);
+       }
+
+       return _mv88e6xxx_atu_load(ds, &entry);
 }
 
 int mv88e6xxx_port_fdb_add(struct dsa_switch *ds, int port,
@@ -1249,7 +1322,7 @@ int mv88e6xxx_port_fdb_add(struct dsa_switch *ds, int port,
        int ret;
 
        mutex_lock(&ps->smi_mutex);
-       ret = __mv88e6xxx_port_fdb_cmd(ds, port, addr, state);
+       ret = _mv88e6xxx_port_fdb_load(ds, port, addr, vid, state);
        mutex_unlock(&ps->smi_mutex);
 
        return ret;
@@ -1262,61 +1335,99 @@ int mv88e6xxx_port_fdb_del(struct dsa_switch *ds, int port,
        int ret;
 
        mutex_lock(&ps->smi_mutex);
-       ret = __mv88e6xxx_port_fdb_cmd(ds, port, addr,
+       ret = _mv88e6xxx_port_fdb_load(ds, port, addr, vid,
                                       GLOBAL_ATU_DATA_STATE_UNUSED);
        mutex_unlock(&ps->smi_mutex);
 
        return ret;
 }
 
-static int __mv88e6xxx_port_getnext(struct dsa_switch *ds, int port,
-                                   unsigned char *addr, bool *is_static)
+static int _mv88e6xxx_atu_getnext(struct dsa_switch *ds, u16 fid,
+                                 const unsigned char *addr,
+                                 struct mv88e6xxx_atu_entry *entry)
 {
-       struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
-       u8 fid = ps->fid[port];
-       int ret, state;
+       struct mv88e6xxx_atu_entry next = { 0 };
+       int ret;
+
+       next.fid = fid;
 
        ret = _mv88e6xxx_atu_wait(ds);
        if (ret < 0)
                return ret;
 
-       ret = __mv88e6xxx_write_addr(ds, addr);
+       ret = _mv88e6xxx_atu_mac_write(ds, addr);
        if (ret < 0)
                return ret;
 
-       do {
-               ret = _mv88e6xxx_atu_cmd(ds, fid,  GLOBAL_ATU_OP_GET_NEXT_DB);
-               if (ret < 0)
-                       return ret;
+       ret = _mv88e6xxx_atu_cmd(ds, fid, GLOBAL_ATU_OP_GET_NEXT_DB);
+       if (ret < 0)
+               return ret;
 
-               ret = _mv88e6xxx_reg_read(ds, REG_GLOBAL, GLOBAL_ATU_DATA);
-               if (ret < 0)
-                       return ret;
-               state = ret & GLOBAL_ATU_DATA_STATE_MASK;
-               if (state == GLOBAL_ATU_DATA_STATE_UNUSED)
-                       return -ENOENT;
-       } while (!(((ret >> 4) & 0xff) & (1 << port)));
+       ret = _mv88e6xxx_atu_mac_read(ds, next.mac);
+       if (ret < 0)
+               return ret;
 
-       ret = __mv88e6xxx_read_addr(ds, addr);
+       ret = _mv88e6xxx_reg_read(ds, REG_GLOBAL, GLOBAL_ATU_DATA);
        if (ret < 0)
                return ret;
 
-       *is_static = state == (is_multicast_ether_addr(addr) ?
-                              GLOBAL_ATU_DATA_STATE_MC_STATIC :
-                              GLOBAL_ATU_DATA_STATE_UC_STATIC);
+       next.state = ret & GLOBAL_ATU_DATA_STATE_MASK;
+       if (next.state != GLOBAL_ATU_DATA_STATE_UNUSED) {
+               unsigned int mask, shift;
 
+               if (ret & GLOBAL_ATU_DATA_TRUNK) {
+                       next.trunk = true;
+                       mask = GLOBAL_ATU_DATA_TRUNK_ID_MASK;
+                       shift = GLOBAL_ATU_DATA_TRUNK_ID_SHIFT;
+               } else {
+                       next.trunk = false;
+                       mask = GLOBAL_ATU_DATA_PORT_VECTOR_MASK;
+                       shift = GLOBAL_ATU_DATA_PORT_VECTOR_SHIFT;
+               }
+
+               next.portv_trunkid = (ret & mask) >> shift;
+       }
+
+       *entry = next;
        return 0;
 }
 
 /* get next entry for port */
 int mv88e6xxx_port_fdb_getnext(struct dsa_switch *ds, int port,
-                              unsigned char *addr, bool *is_static)
+                              unsigned char *addr, u16 *vid, bool *is_static)
 {
        struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
+       struct mv88e6xxx_atu_entry next;
+       u16 fid;
        int ret;
 
        mutex_lock(&ps->smi_mutex);
-       ret = __mv88e6xxx_port_getnext(ds, port, addr, is_static);
+
+       ret = _mv88e6xxx_port_vid_to_fid(ds, port, *vid);
+       if (ret < 0)
+               goto unlock;
+       fid = ret;
+
+       do {
+               if (is_broadcast_ether_addr(addr)) {
+                       ret = -ENOENT;
+                       goto unlock;
+               }
+
+               ret = _mv88e6xxx_atu_getnext(ds, fid, addr, &next);
+               if (ret < 0)
+                       goto unlock;
+
+               ether_addr_copy(addr, next.mac);
+
+               if (next.state == GLOBAL_ATU_DATA_STATE_UNUSED)
+                       continue;
+       } while (next.trunk || (next.portv_trunkid & BIT(port)) == 0);
+
+       *is_static = next.state == (is_multicast_ether_addr(addr) ?
+                                   GLOBAL_ATU_DATA_STATE_MC_STATIC :
+                                   GLOBAL_ATU_DATA_STATE_UC_STATIC);
+unlock:
        mutex_unlock(&ps->smi_mutex);
 
        return ret;
@@ -1659,7 +1770,7 @@ static int mv88e6xxx_atu_show_db(struct seq_file *s, struct dsa_switch *ds,
        unsigned char addr[6];
        int ret, data, state;
 
-       ret = __mv88e6xxx_write_addr(ds, bcast);
+       ret = _mv88e6xxx_atu_mac_write(ds, bcast);
        if (ret < 0)
                return ret;
 
@@ -1674,7 +1785,7 @@ static int mv88e6xxx_atu_show_db(struct seq_file *s, struct dsa_switch *ds,
                state = data & GLOBAL_ATU_DATA_STATE_MASK;
                if (state == GLOBAL_ATU_DATA_STATE_UNUSED)
                        break;
-               ret = __mv88e6xxx_read_addr(ds, addr);
+               ret = _mv88e6xxx_atu_mac_read(ds, addr);
                if (ret < 0)
                        return ret;
                mv88e6xxx_atu_show_entry(s, dbnum, addr, data);
@@ -1988,6 +2099,12 @@ int mv88e6xxx_setup_global(struct dsa_switch *ds)
        /* Wait for the flush to complete. */
        mutex_lock(&ps->smi_mutex);
        ret = _mv88e6xxx_stats_wait(ds);
+       if (ret < 0)
+               goto unlock;
+
+       /* Clear all the VTU and STU entries */
+       ret = _mv88e6xxx_vtu_stu_flush(ds);
+unlock:
        mutex_unlock(&ps->smi_mutex);
 
        return ret;