net: dsa: mv88e6xxx: add max VID to info

Some chips don't have a VLAN Table Unit, most of them do have a 4K
table, some others as the 88E6390 family has a 13th bit for the VID.

Add a new max_vid member to the info structure, used to check the
presence of a VTU as well as the value used to iterate from in VTU
GetNext operations.

This makes the MV88E6XXX_FLAG_VTU obsolete, thus remove it.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 31 insertions, 20 deletions

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 44ba8cff5631..e45ddf3e90e8 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1440,7 +1440,7 @@ static int mv88e6xxx_port_vlan_dump(struct dsa_switch *ds, int port,
         u16 pvid;
         int err;
 
-        if (!mv88e6xxx_has(chip, MV88E6XXX_FLAG_VTU))
+        if (!chip->info->max_vid)
                 return -EOPNOTSUPP;
 
         mutex_lock(&chip->reg_lock);
@@ -1478,7 +1478,7 @@ static int mv88e6xxx_port_vlan_dump(struct dsa_switch *ds, int port,
                 err = cb(&vlan->obj);
                 if (err)
                         break;
-        } while (next.vid < GLOBAL_VTU_VID_MASK);
+        } while (next.vid < chip->info->max_vid);
 
 unlock:
         mutex_unlock(&chip->reg_lock);
@@ -1640,7 +1640,7 @@ static int mv88e6xxx_atu_new(struct mv88e6xxx_chip *chip, u16 *fid)
                         break;
 
                 set_bit(vlan.fid, fid_bitmap);
-        } while (vlan.vid < GLOBAL_VTU_VID_MASK);
+        } while (vlan.vid < chip->info->max_vid);
 
         /* The reset value 0x000 is used to indicate that multiple address
          * databases are not needed. Return the next positive available.
@@ -1799,7 +1799,7 @@ static int mv88e6xxx_port_vlan_filtering(struct dsa_switch *ds, int port,
                 PORT_CONTROL_2_8021Q_DISABLED;
         int err;
 
-        if (!mv88e6xxx_has(chip, MV88E6XXX_FLAG_VTU))
+        if (!chip->info->max_vid)
                 return -EOPNOTSUPP;
 
         mutex_lock(&chip->reg_lock);
@@ -1817,7 +1817,7 @@ mv88e6xxx_port_vlan_prepare(struct dsa_switch *ds, int port,
         struct mv88e6xxx_chip *chip = ds->priv;
         int err;
 
-        if (!mv88e6xxx_has(chip, MV88E6XXX_FLAG_VTU))
+        if (!chip->info->max_vid)
                 return -EOPNOTSUPP;
 
         /* If the requested port doesn't belong to the same bridge as the VLAN
@@ -1860,7 +1860,7 @@ static void mv88e6xxx_port_vlan_add(struct dsa_switch *ds, int port,
         bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
         u16 vid;
 
-        if (!mv88e6xxx_has(chip, MV88E6XXX_FLAG_VTU))
+        if (!chip->info->max_vid)
                 return;
 
         mutex_lock(&chip->reg_lock);
@@ -1921,7 +1921,7 @@ static int mv88e6xxx_port_vlan_del(struct dsa_switch *ds, int port,
         u16 pvid, vid;
         int err = 0;
 
-        if (!mv88e6xxx_has(chip, MV88E6XXX_FLAG_VTU))
+        if (!chip->info->max_vid)
                 return -EOPNOTSUPP;
 
         mutex_lock(&chip->reg_lock);
@@ -2090,7 +2090,7 @@ static int mv88e6xxx_port_db_dump(struct mv88e6xxx_chip *chip, int port,
                                   int (*cb)(struct switchdev_obj *obj))
 {
         struct mv88e6xxx_vtu_entry vlan = {
-                .vid = GLOBAL_VTU_VID_MASK, /* all ones */
+                .vid = chip->info->max_vid,
         };
         u16 fid;
         int err;
@@ -2121,7 +2121,7 @@ static int mv88e6xxx_port_db_dump(struct mv88e6xxx_chip *chip, int port,
                                                  obj, cb);
                 if (err)
                         return err;
-        } while (vlan.vid < GLOBAL_VTU_VID_MASK);
+        } while (vlan.vid < chip->info->max_vid);
 
         return err;
 }
@@ -3685,6 +3685,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = {
                 .name = "Marvell 88E6085",
                 .num_databases = 4096,
                 .num_ports = 10,
+                .max_vid = 4095,
                 .port_base_addr = 0x10,
                 .global1_addr = 0x1b,
                 .age_time_coeff = 15000,
@@ -3702,6 +3703,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = {
                 .name = "Marvell 88E6095/88E6095F",
                 .num_databases = 256,
                 .num_ports = 11,
+                .max_vid = 4095,
                 .port_base_addr = 0x10,
                 .global1_addr = 0x1b,
                 .age_time_coeff = 15000,
@@ -3718,6 +3720,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = {
                 .name = "Marvell 88E6097/88E6097F",
                 .num_databases = 4096,
                 .num_ports = 11,
+                .max_vid = 4095,
                 .port_base_addr = 0x10,
                 .global1_addr = 0x1b,
                 .age_time_coeff = 15000,
@@ -3735,6 +3738,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = {
                 .name = "Marvell 88E6123",
                 .num_databases = 4096,
                 .num_ports = 3,
+                .max_vid = 4095,
                 .port_base_addr = 0x10,
                 .global1_addr = 0x1b,
                 .age_time_coeff = 15000,
@@ -3752,6 +3756,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = {
                 .name = "Marvell 88E6131",
                 .num_databases = 256,
                 .num_ports = 8,
+                .max_vid = 4095,
                 .port_base_addr = 0x10,
                 .global1_addr = 0x1b,
                 .age_time_coeff = 15000,
@@ -3768,6 +3773,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = {
                 .name = "Marvell 88E6341",
                 .num_databases = 4096,
                 .num_ports = 6,
+                .max_vid = 4095,
                 .port_base_addr = 0x10,
                 .global1_addr = 0x1b,
                 .age_time_coeff = 3750,
@@ -3784,6 +3790,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = {
                 .name = "Marvell 88E6161",
                 .num_databases = 4096,
                 .num_ports = 6,
+                .max_vid = 4095,
                 .port_base_addr = 0x10,
                 .global1_addr = 0x1b,
                 .age_time_coeff = 15000,
@@ -3801,6 +3808,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = {
                 .name = "Marvell 88E6165",
                 .num_databases = 4096,
                 .num_ports = 6,
+                .max_vid = 4095,
                 .port_base_addr = 0x10,
                 .global1_addr = 0x1b,
                 .age_time_coeff = 15000,
@@ -3818,6 +3826,7 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = {
                 .name = "Marvell 88E6171",
                 .num_databases = 4096,