Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...

[platform/kernel/linux-starfive.git] / drivers / net / ethernet / mellanox / mlx4 / main.c

diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 200cc0e..b2acbe7 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -95,8 +95,14 @@ MODULE_PARM_DESC(log_num_mgm_entry_size, "log mgm size, that defines the num"
                                         " Not in use with device managed"
                                         " flow steering");
 
+static bool enable_64b_cqe_eqe;
+module_param(enable_64b_cqe_eqe, bool, 0444);
+MODULE_PARM_DESC(enable_64b_cqe_eqe,
+                "Enable 64 byte CQEs/EQEs when the the FW supports this");
+
 #define HCA_GLOBAL_CAP_MASK            0
-#define PF_CONTEXT_BEHAVIOUR_MASK      0
+
+#define PF_CONTEXT_BEHAVIOUR_MASK      MLX4_FUNC_CAP_64B_EQE_CQE
 
 static char mlx4_version[] =
        DRV_NAME ": Mellanox ConnectX core driver v"
@@ -386,6 +392,21 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
                dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH];
 
        dev->caps.sqp_demux = (mlx4_is_master(dev)) ? MLX4_MAX_NUM_SLAVES : 0;
+
+       if (!enable_64b_cqe_eqe) {
+               if (dev_cap->flags &
+                   (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) {
+                       mlx4_warn(dev, "64B EQEs/CQEs supported by the device but not enabled\n");
+                       dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE;
+                       dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE;
+               }
+       }
+
+       if ((dev_cap->flags &
+           (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) &&
+           mlx4_is_master(dev))
+               dev->caps.function_caps |= MLX4_FUNC_CAP_64B_EQE_CQE;
+
        return 0;
 }
 /*The function checks if there are live vf, return the num of them*/
@@ -599,6 +620,21 @@ static int mlx4_slave_cap(struct mlx4_dev *dev)
                goto err_mem;
        }
 
+       if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_EQE_ENABLED) {
+               dev->caps.eqe_size   = 64;
+               dev->caps.eqe_factor = 1;
+       } else {
+               dev->caps.eqe_size   = 32;
+               dev->caps.eqe_factor = 0;
+       }
+
+       if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_CQE_ENABLED) {
+               dev->caps.cqe_size   = 64;
+               dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_64B_CQE;
+       } else {
+               dev->caps.cqe_size   = 32;
+       }
+
        return 0;
 
 err_mem: