netdev - [for-next V2 10/10] net/mlx5: Activate support for 4K UARs

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Date:   Sun,  8 Jan 2017 17:54:51 +0200
From:   Saeed Mahameed <saeedm@...lanox.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Doug Ledford <dledford@...hat.com>
Cc:     netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
        Leon Romanovsky <leonro@...lanox.com>,
        Eli Cohen <eli@...lanox.com>,
        Matan Barak <matanb@...lanox.com>,
        Leon Romanovsky <leon@...nel.org>,
        Saeed Mahameed <saeedm@...lanox.com>
Subject: [for-next V2 10/10] net/mlx5: Activate support for 4K UARs

From: Eli Cohen <eli@...lanox.com>

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

Signed-off-by: Eli Cohen <eli@...lanox.com>
Reviewed-by: Matan Barak <matanb@...lanox.com>
Signed-off-by: Leon Romanovsky <leon@...nel.org>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index ff1f144..a16ee16 100644
--- 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,
-- 
2.7.4