mlxsw: spectrum: Add struct mlxsw_sp_sb_vals

Spectrum-2 will be configured with a different shared buffer
configuration than Spectrum-1. Therefore introduce a structure for
keeping the chip-specific default and immutable configuration.

Configuration mutable in runtime will still be kept in struct
mlxsw_sp_sb.
Signed-off-by: NPetr Machata <petrm@mellanox.com>
Signed-off-by: NIdo Schimmel <idosch@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

@@ -4092,6 +4092,7 @@ static int mlxsw_sp1_init(struct mlxsw_core *mlxsw_core,
 	mlxsw_sp->nve_ops_arr = mlxsw_sp1_nve_ops_arr;
 	mlxsw_sp->mac_mask = mlxsw_sp1_mac_mask;
 	mlxsw_sp->rif_ops_arr = mlxsw_sp1_rif_ops_arr;
+	mlxsw_sp->sb_vals = &mlxsw_sp1_sb_vals;
 
 	return mlxsw_sp_init(mlxsw_core, mlxsw_bus_info);
 }
@@ -4109,6 +4110,7 @@ static int mlxsw_sp2_init(struct mlxsw_core *mlxsw_core,
 	mlxsw_sp->nve_ops_arr = mlxsw_sp2_nve_ops_arr;
 	mlxsw_sp->mac_mask = mlxsw_sp2_mac_mask;
 	mlxsw_sp->rif_ops_arr = mlxsw_sp2_rif_ops_arr;
+	mlxsw_sp->sb_vals = &mlxsw_sp2_sb_vals;
 
 	return mlxsw_sp_init(mlxsw_core, mlxsw_bus_info);
 }

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

@@ -133,6 +133,7 @@ struct mlxsw_sp_kvdl_ops;
 struct mlxsw_sp_mr_tcam_ops;
 struct mlxsw_sp_acl_tcam_ops;
 struct mlxsw_sp_nve_ops;
+struct mlxsw_sp_sb_vals;
 
 struct mlxsw_sp {
 	struct mlxsw_sp_port **ports;
@@ -167,6 +168,7 @@ struct mlxsw_sp {
 	const struct mlxsw_sp_acl_tcam_ops *acl_tcam_ops;
 	const struct mlxsw_sp_nve_ops **nve_ops_arr;
 	const struct mlxsw_sp_rif_ops **rif_ops_arr;
+	const struct mlxsw_sp_sb_vals *sb_vals;
 };
 
 static inline struct mlxsw_sp_upper *
@@ -372,6 +374,9 @@ int mlxsw_sp_sb_occ_tc_port_bind_get(struct mlxsw_core_port *mlxsw_core_port,
 u32 mlxsw_sp_cells_bytes(const struct mlxsw_sp *mlxsw_sp, u32 cells);
 u32 mlxsw_sp_bytes_cells(const struct mlxsw_sp *mlxsw_sp, u32 bytes);
 
+extern const struct mlxsw_sp_sb_vals mlxsw_sp1_sb_vals;
+extern const struct mlxsw_sp_sb_vals mlxsw_sp2_sb_vals;
+
 /* spectrum_switchdev.c */
 int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp);
 void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp);

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

@@ -73,6 +73,9 @@ struct mlxsw_sp_sb {
 	u64 sb_size;
 };
 
+struct mlxsw_sp_sb_vals {
+};
+
 u32 mlxsw_sp_cells_bytes(const struct mlxsw_sp *mlxsw_sp, u32 cells)
 {
 	return mlxsw_sp->sb->cell_size * cells;
@@ -625,6 +628,12 @@ static void mlxsw_sp_pool_count(u16 *p_ingress_len, u16 *p_egress_len)
 	*p_egress_len = MLXSW_SP_SB_POOL_DESS_LEN - i;
 }
 
+const struct mlxsw_sp_sb_vals mlxsw_sp1_sb_vals = {
+};
+
+const struct mlxsw_sp_sb_vals mlxsw_sp2_sb_vals = {
+};
+
 int mlxsw_sp_buffers_init(struct mlxsw_sp *mlxsw_sp)
 {
 	u16 ing_pool_count;