MLX_V4REG_IDB
if ((mlx_inl(mlx, MLX_V4REG_IDB) & MLX_V4_IDB_FULL) == 0) {
mlx_outl(mlx, MLX_V4REG_IDB, MLX_V4_IDB_HWMBOX_CMD);
mlx_outl(mlx, MLX_V4REG_IDB, MLX_V4_IDB_SACK);
mlx_outl(mlx, MLX_V4REG_IDB, MLX_V4_IDB_SACK);
if ((mlx_inl(mlx, MLX_V4REG_IDB) & MLX_V4_IDB_INIT_BUSY) == 0)