From f5e293f9939e6cb532efa19c0043f8b93355c88b Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Thu, 19 Oct 2023 12:27:17 +0200 Subject: mlxsw: spectrum_fid: Allocate PGT for the whole FID family in one go PGT blocks are allocated through the function mlxsw_sp_pgt_mid_alloc_range(). The interface assumes that the caller knows which piece of PGT exactly they want to get. That was fine while the FID code was the only client allocating blocks of PGT. However for SW-allocated LAG table, there will be an additional client: mlxsw_sp_lag_init(). The interface should therefore be changed to not require particular coordinates, but to take just the requested size, allocate the block wherever, and give back the PGT address. The current FID mode has one place where PGT address can be stored: the FID family's pgt_base. The allocation scheme should therefore be changed from allocating a block per FID flood table, to allocating a block per FID family. Do just that in this patch. The per-family allocation is going to be useful for another related feature as well: the CFF mode. Signed-off-by: Petr Machata Reviewed-by: Ido Schimmel Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/spectrum_fid.c | 63 +++++++++++----------- 1 file changed, 33 insertions(+), 30 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_fid.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_fid.c index 9df098474743..4d0b72fbfebe 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_fid.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_fid.c @@ -320,6 +320,14 @@ mlxsw_sp_fid_family_num_fids(const struct mlxsw_sp_fid_family *fid_family) return fid_family->end_index - fid_family->start_index + 1; } +static u16 +mlxsw_sp_fid_family_pgt_size(const struct mlxsw_sp_fid_family *fid_family) +{ + u16 num_fids = mlxsw_sp_fid_family_num_fids(fid_family); + + return num_fids * fid_family->nr_flood_tables; +} + static u16 mlxsw_sp_fid_flood_table_mid(const struct mlxsw_sp_fid_family *fid_family, const struct mlxsw_sp_flood_table *flood_table, @@ -1654,14 +1662,10 @@ mlxsw_sp_fid_flood_table_init(struct mlxsw_sp_fid_family *fid_family, enum mlxsw_sp_flood_type packet_type = flood_table->packet_type; struct mlxsw_sp *mlxsw_sp = fid_family->mlxsw_sp; const int *sfgc_packet_types; - u16 num_fids, mid_base; + u16 mid_base; int err, i; mid_base = mlxsw_sp_fid_flood_table_mid(fid_family, flood_table, 0); - num_fids = mlxsw_sp_fid_family_num_fids(fid_family); - err = mlxsw_sp_pgt_mid_alloc_range(mlxsw_sp, mid_base, num_fids); - if (err) - return err; sfgc_packet_types = mlxsw_sp_packet_type_sfgc_types[packet_type]; for (i = 0; i < MLXSW_REG_SFGC_TYPE_MAX; i++) { @@ -1675,57 +1679,56 @@ mlxsw_sp_fid_flood_table_init(struct mlxsw_sp_fid_family *fid_family, err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfgc), sfgc_pl); if (err) - goto err_reg_write; + return err; } return 0; - -err_reg_write: - mlxsw_sp_pgt_mid_free_range(mlxsw_sp, mid_base, num_fids); - return err; -} - -static void -mlxsw_sp_fid_flood_table_fini(struct mlxsw_sp_fid_family *fid_family, - const struct mlxsw_sp_flood_table *flood_table) -{ - struct mlxsw_sp *mlxsw_sp = fid_family->mlxsw_sp; - u16 num_fids, mid_base; - - mid_base = mlxsw_sp_fid_flood_table_mid(fid_family, flood_table, 0); - num_fids = mlxsw_sp_fid_family_num_fids(fid_family); - mlxsw_sp_pgt_mid_free_range(mlxsw_sp, mid_base, num_fids); } static int mlxsw_sp_fid_flood_tables_init(struct mlxsw_sp_fid_family *fid_family) { + struct mlxsw_sp *mlxsw_sp = fid_family->mlxsw_sp; + u16 pgt_size; + int err; int i; + if (!fid_family->nr_flood_tables) + return 0; + + pgt_size = mlxsw_sp_fid_family_pgt_size(fid_family); + err = mlxsw_sp_pgt_mid_alloc_range(mlxsw_sp, fid_family->pgt_base, + pgt_size); + if (err) + return err; + for (i = 0; i < fid_family->nr_flood_tables; i++) { const struct mlxsw_sp_flood_table *flood_table; - int err; flood_table = &fid_family->flood_tables[i]; err = mlxsw_sp_fid_flood_table_init(fid_family, flood_table); if (err) - return err; + goto err_flood_table_init; } return 0; + +err_flood_table_init: + mlxsw_sp_pgt_mid_free_range(mlxsw_sp, fid_family->pgt_base, pgt_size); + return err; } static void mlxsw_sp_fid_flood_tables_fini(struct mlxsw_sp_fid_family *fid_family) { - int i; + struct mlxsw_sp *mlxsw_sp = fid_family->mlxsw_sp; + u16 pgt_size; - for (i = 0; i < fid_family->nr_flood_tables; i++) { - const struct mlxsw_sp_flood_table *flood_table; + if (!fid_family->nr_flood_tables) + return; - flood_table = &fid_family->flood_tables[i]; - mlxsw_sp_fid_flood_table_fini(fid_family, flood_table); - } + pgt_size = mlxsw_sp_fid_family_pgt_size(fid_family); + mlxsw_sp_pgt_mid_free_range(mlxsw_sp, fid_family->pgt_base, pgt_size); } static int mlxsw_sp_fid_family_register(struct mlxsw_sp *mlxsw_sp, -- cgit v1.2.3