mlxsw: Remove multicast ID configuration

With respect to a firmware change, the Switch Multicast ID (SMID)
register is no longer needed, so the related configuration code can be
removed.
Signed-off-by: NIdo Schimmel <idosch@mellanox.com>
Signed-off-by: NJiri Pirko <jiri@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/reg.h

@@ -99,57 +99,6 @@ static const struct mlxsw_reg_info mlxsw_reg_spad = {
  */
 MLXSW_ITEM_BUF(reg, spad, base_mac, 0x02, 6);
 
-/* SMID - Switch Multicast ID
- * --------------------------
- * In multi-chip configuration, each device should maintain mapping between
- * Multicast ID (MID) into a list of local ports. This mapping is used in all
- * the devices other than the ingress device, and is implemented as part of the
- * FDB. The MID record maps from a MID, which is a unique identi- fier of the
- * multicast group within the stacking domain, into a list of local ports into
- * which the packet is replicated.
- */
-#define MLXSW_REG_SMID_ID 0x2007
-#define MLXSW_REG_SMID_LEN 0x420
-
-static const struct mlxsw_reg_info mlxsw_reg_smid = {
-	.id = MLXSW_REG_SMID_ID,
-	.len = MLXSW_REG_SMID_LEN,
-};
-
-/* reg_smid_swid
- * Switch partition ID.
- * Access: Index
- */
-MLXSW_ITEM32(reg, smid, swid, 0x00, 24, 8);
-
-/* reg_smid_mid
- * Multicast identifier - global identifier that represents the multicast group
- * across all devices
- * Access: Index
- */
-MLXSW_ITEM32(reg, smid, mid, 0x00, 0, 16);
-
-/* reg_smid_port
- * Local port memebership (1 bit per port).
- * Access: RW
- */
-MLXSW_ITEM_BIT_ARRAY(reg, smid, port, 0x20, 0x20, 1);
-
-/* reg_smid_port_mask
- * Local port mask (1 bit per port).
- * Access: W
- */
-MLXSW_ITEM_BIT_ARRAY(reg, smid, port_mask, 0x220, 0x20, 1);
-
-static inline void mlxsw_reg_smid_pack(char *payload, u16 mid)
-{
-	MLXSW_REG_ZERO(smid, payload);
-	mlxsw_reg_smid_swid_set(payload, 0);
-	mlxsw_reg_smid_mid_set(payload, mid);
-	mlxsw_reg_smid_port_set(payload, MLXSW_PORT_CPU_PORT, 1);
-	mlxsw_reg_smid_port_mask_set(payload, MLXSW_PORT_CPU_PORT, 1);
-}
-
 /* SSPR - Switch System Port Record Register
  * -----------------------------------------
  * Configures the system port to local port mapping.
@@ -1272,8 +1221,6 @@ static inline const char *mlxsw_reg_id_str(u16 reg_id)
 		return "SGCR";
 	case MLXSW_REG_SPAD_ID:
 		return "SPAD";
-	case MLXSW_REG_SMID_ID:
-		return "SMID";
 	case MLXSW_REG_SSPR_ID:
 		return "SSPR";
 	case MLXSW_REG_SPMS_ID:

drivers/net/ethernet/mellanox/mlxsw/switchx2.c

@@ -1371,20 +1371,9 @@ static int mlxsw_sx_flood_init(struct mlxsw_sx *mlxsw_sx)
 {
 	char sfgc_pl[MLXSW_REG_SFGC_LEN];
 	char sgcr_pl[MLXSW_REG_SGCR_LEN];
-	char *smid_pl;
 	char *sftr_pl;
 	int err;
 
-	/* Due to FW bug, we must configure SMID. */
-	smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL);
-	if (!smid_pl)
-		return -ENOMEM;
-	mlxsw_reg_smid_pack(smid_pl, MLXSW_PORT_MID);
-	err = mlxsw_reg_write(mlxsw_sx->core, MLXSW_REG(smid), smid_pl);
-	kfree(smid_pl);
-	if (err)
-		return err;
-
 	/* Configure a flooding table, which includes only CPU port. */
 	sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
 	if (!sftr_pl)