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Commit d3daae1b authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller
Browse files

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: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5ec2ee7d

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

+6 −4
Original line number Diff line number Diff line
@@ -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,