From c788d79cfa6b68b1068b25e9cdff25d6035ed191 Mon Sep 17 00:00:00 2001 From: Jianbo Liu Date: Tue, 2 Apr 2024 16:30:42 +0300 Subject: [PATCH] net/mlx5: Skip pages EQ creation for non-page supplier function Page events are not issued by device on the function if page_request_disable is set, so no need to create pages EQ. Signed-off-by: Jianbo Liu Reviewed-by: Parav Pandit Reviewed-by: Moshe Shemesh Signed-off-by: Tariq Toukan Link: https://lore.kernel.org/r/20240402133043.56322-11-tariqt@nvidia.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/mellanox/mlx5/core/eq.c | 9 ++++++++- include/linux/mlx5/mlx5_ifc.h | 4 +++- 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c index 40a6cb052a2d..5693986ae656 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c @@ -688,6 +688,12 @@ static int create_async_eqs(struct mlx5_core_dev *dev) if (err) goto err2; + /* Skip page eq creation when the device does not request for page requests */ + if (MLX5_CAP_GEN(dev, page_request_disable)) { + mlx5_core_dbg(dev, "Skip page EQ creation\n"); + return 0; + } + param = (struct mlx5_eq_param) { .irq = table->ctrl_irq, .nent = /* TODO: sriov max_vf + */ 1, @@ -716,7 +722,8 @@ static void destroy_async_eqs(struct mlx5_core_dev *dev) { struct mlx5_eq_table *table = dev->priv.eq_table; - cleanup_async_eq(dev, &table->pages_eq, "pages"); + if (!MLX5_CAP_GEN(dev, page_request_disable)) + cleanup_async_eq(dev, &table->pages_eq, "pages"); cleanup_async_eq(dev, &table->async_eq, "async"); mlx5_cmd_allowed_opcode(dev, MLX5_CMD_OP_DESTROY_EQ); mlx5_cmd_use_polling(dev); diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h index 40f6fa138e27..cc159d8563d1 100644 --- a/include/linux/mlx5/mlx5_ifc.h +++ b/include/linux/mlx5/mlx5_ifc.h @@ -1485,7 +1485,9 @@ enum { }; struct mlx5_ifc_cmd_hca_cap_bits { - u8 reserved_at_0[0x10]; + u8 reserved_at_0[0x6]; + u8 page_request_disable[0x1]; + u8 reserved_at_7[0x9]; u8 shared_object_to_user_object_allowed[0x1]; u8 reserved_at_13[0xe]; u8 vhca_resource_manager[0x1]; -- 2.49.0