From d3daae1b0808c82bc2875c0f249650d3efe6776f Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Fri, 24 Mar 2017 08:02:49 +0100 Subject: [PATCH] mlxsw: spectrum_buffers: Query shared buffer size from firmware Instead of hard coding the size of the shared buffer in the driver, query it from the firmware, as it may change in future devices. Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c index 3ab853db59ee..7e67d0e5b7f3 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_buffers.c @@ -536,12 +536,15 @@ static int mlxsw_sp_sb_mms_init(struct mlxsw_sp *mlxsw_sp) return 0; } -#define MLXSW_SP_SB_SIZE (16 * 1024 * 1024) - int mlxsw_sp_buffers_init(struct mlxsw_sp *mlxsw_sp) { + u64 sb_size; int err; + if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_BUFFER_SIZE)) + return -EIO; + sb_size = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_BUFFER_SIZE); + err = mlxsw_sp_sb_ports_init(mlxsw_sp); if (err) return err; @@ -554,8 +557,7 @@ int mlxsw_sp_buffers_init(struct mlxsw_sp *mlxsw_sp) err = mlxsw_sp_sb_mms_init(mlxsw_sp); if (err) goto err_sb_mms_init; - err = devlink_sb_register(priv_to_devlink(mlxsw_sp->core), 0, - MLXSW_SP_SB_SIZE, + err = devlink_sb_register(priv_to_devlink(mlxsw_sp->core), 0, sb_size, MLXSW_SP_SB_POOL_COUNT, MLXSW_SP_SB_POOL_COUNT, MLXSW_SP_SB_TC_COUNT, -- 2.20.1