net: dsa: mv88e6xxx: complete ATU state definitions

Marvell has different values for the state of a MAC address,
depending on its multicast bit. This patch completes the definitions
for these states.

At the same time, use 0 which is intuitive enough and simplifies the
code a bit, instead of the UC or MC unused value.
Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/mv88e6xxx/chip.c

@@ -1497,7 +1497,7 @@ static int mv88e6xxx_port_db_load_purge(struct mv88e6xxx_chip *chip, int port,
 		fid = vlan.fid;
 	}
 
-	entry.state = MV88E6XXX_G1_ATU_DATA_STATE_UNUSED;
+	entry.state = 0;
 	ether_addr_copy(entry.mac, addr);
 	eth_addr_dec(entry.mac);
 
@@ -1506,17 +1506,16 @@ static int mv88e6xxx_port_db_load_purge(struct mv88e6xxx_chip *chip, int port,
 		return err;
 
 	/* Initialize a fresh ATU entry if it isn't found */
-	if (entry.state == MV88E6XXX_G1_ATU_DATA_STATE_UNUSED ||
-	    !ether_addr_equal(entry.mac, addr)) {
+	if (!entry.state || !ether_addr_equal(entry.mac, addr)) {
 		memset(&entry, 0, sizeof(entry));
 		ether_addr_copy(entry.mac, addr);
 	}
 
 	/* Purge the ATU entry only if no port is using it anymore */
-	if (state == MV88E6XXX_G1_ATU_DATA_STATE_UNUSED) {
+	if (!state) {
 		entry.portvec &= ~BIT(port);
 		if (!entry.portvec)
-			entry.state = MV88E6XXX_G1_ATU_DATA_STATE_UNUSED;
+			entry.state = 0;
 	} else {
 		entry.portvec |= BIT(port);
 		entry.state = state;
@@ -1732,8 +1731,7 @@ static int mv88e6xxx_port_fdb_del(struct dsa_switch *ds, int port,
 	int err;
 
 	mv88e6xxx_reg_lock(chip);
-	err = mv88e6xxx_port_db_load_purge(chip, port, addr, vid,
-					   MV88E6XXX_G1_ATU_DATA_STATE_UNUSED);
+	err = mv88e6xxx_port_db_load_purge(chip, port, addr, vid, 0);
 	mv88e6xxx_reg_unlock(chip);
 
 	return err;
@@ -1747,7 +1745,7 @@ static int mv88e6xxx_port_db_dump_fid(struct mv88e6xxx_chip *chip,
 	bool is_static;
 	int err;
 
-	addr.state = MV88E6XXX_G1_ATU_DATA_STATE_UNUSED;
+	addr.state = 0;
 	eth_broadcast_addr(addr.mac);
 
 	do {
@@ -1755,7 +1753,7 @@ static int mv88e6xxx_port_db_dump_fid(struct mv88e6xxx_chip *chip,
 		if (err)
 			return err;
 
-		if (addr.state == MV88E6XXX_G1_ATU_DATA_STATE_UNUSED)
+		if (!addr.state)
 			break;
 
 		if (addr.trunk || (addr.portvec & BIT(port)) == 0)
@@ -4690,8 +4688,7 @@ static int mv88e6xxx_port_mdb_del(struct dsa_switch *ds, int port,
 	int err;
 
 	mv88e6xxx_reg_lock(chip);
-	err = mv88e6xxx_port_db_load_purge(chip, port, mdb->addr, mdb->vid,
-					   MV88E6XXX_G1_ATU_DATA_STATE_UNUSED);
+	err = mv88e6xxx_port_db_load_purge(chip, port, mdb->addr, mdb->vid, 0);
 	mv88e6xxx_reg_unlock(chip);
 
 	return err;

drivers/net/dsa/mv88e6xxx/global1.h

@@ -128,19 +128,36 @@
 #define MV88E6XXX_G1_ATU_OP_FULL_VIOLATION		BIT(4)
 
 /* Offset 0x0C: ATU Data Register */
-#define MV88E6XXX_G1_ATU_DATA				0x0c
-#define MV88E6XXX_G1_ATU_DATA_TRUNK			0x8000
-#define MV88E6XXX_G1_ATU_DATA_TRUNK_ID_MASK		0x00f0
-#define MV88E6XXX_G1_ATU_DATA_PORT_VECTOR_MASK		0x3ff0
-#define MV88E6XXX_G1_ATU_DATA_STATE_MASK		0x000f
-#define MV88E6XXX_G1_ATU_DATA_STATE_UNUSED		0x0000
-#define MV88E6XXX_G1_ATU_DATA_STATE_UC_MGMT		0x000d
-#define MV88E6XXX_G1_ATU_DATA_STATE_UC_STATIC		0x000e
-#define MV88E6XXX_G1_ATU_DATA_STATE_UC_PRIO_OVER	0x000f
-#define MV88E6XXX_G1_ATU_DATA_STATE_MC_NONE_RATE	0x0005
-#define MV88E6XXX_G1_ATU_DATA_STATE_MC_STATIC		0x0007
-#define MV88E6XXX_G1_ATU_DATA_STATE_MC_MGMT		0x000e
-#define MV88E6XXX_G1_ATU_DATA_STATE_MC_PRIO_OVER	0x000f
+#define MV88E6XXX_G1_ATU_DATA					0x0c
+#define MV88E6XXX_G1_ATU_DATA_TRUNK				0x8000
+#define MV88E6XXX_G1_ATU_DATA_TRUNK_ID_MASK			0x00f0
+#define MV88E6XXX_G1_ATU_DATA_PORT_VECTOR_MASK			0x3ff0
+#define MV88E6XXX_G1_ATU_DATA_STATE_MASK			0x000f
+#define MV88E6XXX_G1_ATU_DATA_STATE_UC_UNUSED			0x0000
+#define MV88E6XXX_G1_ATU_DATA_STATE_UC_AGE_1_OLDEST		0x0001
+#define MV88E6XXX_G1_ATU_DATA_STATE_UC_AGE_2			0x0002
+#define MV88E6XXX_G1_ATU_DATA_STATE_UC_AGE_3			0x0003
+#define MV88E6XXX_G1_ATU_DATA_STATE_UC_AGE_4			0x0004
+#define MV88E6XXX_G1_ATU_DATA_STATE_UC_AGE_5			0x0005
+#define MV88E6XXX_G1_ATU_DATA_STATE_UC_AGE_6			0x0006
+#define MV88E6XXX_G1_ATU_DATA_STATE_UC_AGE_7_NEWEST		0x0007
+#define MV88E6XXX_G1_ATU_DATA_STATE_UC_STATIC_POLICY		0x0008
+#define MV88E6XXX_G1_ATU_DATA_STATE_UC_STATIC_POLICY_PO		0x0009
+#define MV88E6XXX_G1_ATU_DATA_STATE_UC_STATIC_AVB_NRL		0x000a
+#define MV88E6XXX_G1_ATU_DATA_STATE_UC_STATIC_AVB_NRL_PO	0x000b
+#define MV88E6XXX_G1_ATU_DATA_STATE_UC_STATIC_DA_MGMT		0x000c
+#define MV88E6XXX_G1_ATU_DATA_STATE_UC_STATIC_DA_MGMT_PO	0x000d
+#define MV88E6XXX_G1_ATU_DATA_STATE_UC_STATIC			0x000e
+#define MV88E6XXX_G1_ATU_DATA_STATE_UC_STATIC_PO		0x000f
+#define MV88E6XXX_G1_ATU_DATA_STATE_MC_UNUSED			0x0000
+#define MV88E6XXX_G1_ATU_DATA_STATE_MC_STATIC_POLICY		0x0004
+#define MV88E6XXX_G1_ATU_DATA_STATE_MC_STATIC_AVB_NRL		0x0005
+#define MV88E6XXX_G1_ATU_DATA_STATE_MC_STATIC_DA_MGMT		0x0006
+#define MV88E6XXX_G1_ATU_DATA_STATE_MC_STATIC			0x0007
+#define MV88E6XXX_G1_ATU_DATA_STATE_MC_STATIC_POLICY_PO		0x000c
+#define MV88E6XXX_G1_ATU_DATA_STATE_MC_STATIC_AVB_NRL_PO	0x000d
+#define MV88E6XXX_G1_ATU_DATA_STATE_MC_STATIC_DA_MGMT_PO	0x000e
+#define MV88E6XXX_G1_ATU_DATA_STATE_MC_STATIC_PO		0x000f
 
 /* Offset 0x0D: ATU MAC Address Register Bytes 0 & 1
  * Offset 0x0E: ATU MAC Address Register Bytes 2 & 3

drivers/net/dsa/mv88e6xxx/global1_atu.c

@@ -135,7 +135,7 @@ static int mv88e6xxx_g1_atu_data_read(struct mv88e6xxx_chip *chip,
 		return err;
 
 	entry->state = val & 0xf;
-	if (entry->state != MV88E6XXX_G1_ATU_DATA_STATE_UNUSED) {
+	if (entry->state) {
 		entry->trunk = !!(val & MV88E6XXX_G1_ATU_DATA_TRUNK);
 		entry->portvec = (val >> 4) & mv88e6xxx_port_mask(chip);
 	}
@@ -148,7 +148,7 @@ static int mv88e6xxx_g1_atu_data_write(struct mv88e6xxx_chip *chip,
 {
 	u16 data = entry->state & 0xf;
 
-	if (entry->state != MV88E6XXX_G1_ATU_DATA_STATE_UNUSED) {
+	if (entry->state) {
 		if (entry->trunk)
 			data |= MV88E6XXX_G1_ATU_DATA_TRUNK;
 
@@ -209,7 +209,7 @@ int mv88e6xxx_g1_atu_getnext(struct mv88e6xxx_chip *chip, u16 fid,
 		return err;
 
 	/* Write the MAC address to iterate from only once */
-	if (entry->state == MV88E6XXX_G1_ATU_DATA_STATE_UNUSED) {
+	if (!entry->state) {
 		err = mv88e6xxx_g1_atu_mac_write(chip, entry);
 		if (err)
 			return err;