diff options
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 93 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 1 |
2 files changed, 83 insertions, 11 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 9dbd5edff0b0..d383d00dd860 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -2692,6 +2692,63 @@ static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp) kfree(mlxsw_sp->trap); } +static int mlxsw_sp_lag_pgt_init(struct mlxsw_sp *mlxsw_sp) +{ + char sgcr_pl[MLXSW_REG_SGCR_LEN]; + u16 max_lag; + int err; + + if (mlxsw_core_lag_mode(mlxsw_sp->core) != + MLXSW_CMD_MBOX_CONFIG_PROFILE_LAG_MODE_SW) + return 0; + + err = mlxsw_core_max_lag(mlxsw_sp->core, &max_lag); + if (err) + return err; + + /* In DDD mode, which we by default use, each LAG entry is 8 PGT + * entries. The LAG table address needs to be 8-aligned, but that ought + * to be the case, since the LAG table is allocated first. + */ + err = mlxsw_sp_pgt_mid_alloc_range(mlxsw_sp, &mlxsw_sp->lag_pgt_base, + max_lag * 8); + if (err) + return err; + if (WARN_ON_ONCE(mlxsw_sp->lag_pgt_base % 8)) { + err = -EINVAL; + goto err_mid_alloc_range; + } + + mlxsw_reg_sgcr_pack(sgcr_pl, mlxsw_sp->lag_pgt_base); + err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sgcr), sgcr_pl); + if (err) + goto err_mid_alloc_range; + + return 0; + +err_mid_alloc_range: + mlxsw_sp_pgt_mid_free_range(mlxsw_sp, mlxsw_sp->lag_pgt_base, + max_lag * 8); + return err; +} + +static void mlxsw_sp_lag_pgt_fini(struct mlxsw_sp *mlxsw_sp) +{ + u16 max_lag; + int err; + + if (mlxsw_core_lag_mode(mlxsw_sp->core) != + MLXSW_CMD_MBOX_CONFIG_PROFILE_LAG_MODE_SW) + return; + + err = mlxsw_core_max_lag(mlxsw_sp->core, &max_lag); + if (err) + return; + + mlxsw_sp_pgt_mid_free_range(mlxsw_sp, mlxsw_sp->lag_pgt_base, + max_lag * 8); +} + #define MLXSW_SP_LAG_SEED_INIT 0xcafecafe static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp) @@ -2723,16 +2780,27 @@ static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp) if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_LAG_MEMBERS)) return -EIO; + err = mlxsw_sp_lag_pgt_init(mlxsw_sp); + if (err) + return err; + mlxsw_sp->lags = kcalloc(max_lag, sizeof(struct mlxsw_sp_upper), GFP_KERNEL); - if (!mlxsw_sp->lags) - return -ENOMEM; + if (!mlxsw_sp->lags) { + err = -ENOMEM; + goto err_kcalloc; + } return 0; + +err_kcalloc: + mlxsw_sp_lag_pgt_fini(mlxsw_sp); + return err; } static void mlxsw_sp_lag_fini(struct mlxsw_sp *mlxsw_sp) { + mlxsw_sp_lag_pgt_fini(mlxsw_sp); kfree(mlxsw_sp->lags); } @@ -3113,6 +3181,15 @@ static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core, goto err_pgt_init; } + /* Initialize before FIDs so that the LAG table is at the start of PGT + * and 8-aligned without overallocation. + */ + err = mlxsw_sp_lag_init(mlxsw_sp); + if (err) { + dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize LAG\n"); + goto err_lag_init; + } + err = mlxsw_sp_fids_init(mlxsw_sp); if (err) { dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize FIDs\n"); @@ -3143,12 +3220,6 @@ static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core, goto err_buffers_init; } - err = mlxsw_sp_lag_init(mlxsw_sp); - if (err) { - dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize LAG\n"); - goto err_lag_init; - } - /* Initialize SPAN before router and switchdev, so that those components * can call mlxsw_sp_span_respin(). */ @@ -3300,8 +3371,6 @@ err_counter_pool_init: err_switchdev_init: mlxsw_sp_span_fini(mlxsw_sp); err_span_init: - mlxsw_sp_lag_fini(mlxsw_sp); -err_lag_init: mlxsw_sp_buffers_fini(mlxsw_sp); err_buffers_init: mlxsw_sp_devlink_traps_fini(mlxsw_sp); @@ -3312,6 +3381,8 @@ err_traps_init: err_policers_init: mlxsw_sp_fids_fini(mlxsw_sp); err_fids_init: + mlxsw_sp_lag_fini(mlxsw_sp); +err_lag_init: mlxsw_sp_pgt_fini(mlxsw_sp); err_pgt_init: mlxsw_sp_kvdl_fini(mlxsw_sp); @@ -3477,12 +3548,12 @@ static void mlxsw_sp_fini(struct mlxsw_core *mlxsw_core) mlxsw_sp_counter_pool_fini(mlxsw_sp); mlxsw_sp_switchdev_fini(mlxsw_sp); mlxsw_sp_span_fini(mlxsw_sp); - mlxsw_sp_lag_fini(mlxsw_sp); mlxsw_sp_buffers_fini(mlxsw_sp); mlxsw_sp_devlink_traps_fini(mlxsw_sp); mlxsw_sp_traps_fini(mlxsw_sp); mlxsw_sp_policers_fini(mlxsw_sp); mlxsw_sp_fids_fini(mlxsw_sp); + mlxsw_sp_lag_fini(mlxsw_sp); mlxsw_sp_pgt_fini(mlxsw_sp); mlxsw_sp_kvdl_fini(mlxsw_sp); mlxsw_sp_parsing_fini(mlxsw_sp); diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h index ac9d03937f4b..c70333b460ea 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h @@ -212,6 +212,7 @@ struct mlxsw_sp { struct mutex ipv6_addr_ht_lock; /* Protects ipv6_addr_ht */ struct mlxsw_sp_pgt *pgt; bool pgt_smpe_index_valid; + u16 lag_pgt_base; }; struct mlxsw_sp_ptp_ops { |