net/mlx5: Activate support for 4K UARs

Activate 4K UAR support for firmware versions that support it.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Reviewed-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index ff1f14498c22fd2dc13dba259be3df2d55753ea8..a16ee1603272cb15df4fb1a01c174e68dd021df9 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -530,6 +530,10 @@ static int handle_hca_cap(struct mlx5_core_dev *dev)
        /* disable cmdif checksum */
        MLX5_SET(cmd_hca_cap, set_hca_cap, cmdif_checksum, 0);
 
+       /* If the HCA supports 4K UARs use it */
+       if (MLX5_CAP_GEN_MAX(dev, uar_4k))
+               MLX5_SET(cmd_hca_cap, set_hca_cap, uar_4k, 1);
+
        MLX5_SET(cmd_hca_cap, set_hca_cap, log_uar_page_sz, PAGE_SHIFT - 12);
 
        err = set_caps(dev, set_ctx, set_sz,