[dpdk-dev] [PATCH 3/5] vdpa/mlx5: add timestamp format support

[Viacheslav Ovsiienko]

This patch adds support for the timestamp format settings for
the queues pairs. If the firmware version x.30.256 or above
is installed and the NIC timestamps are configured with the
real-time format, the default zero values for new added values
cause the queue creation reject. The patch queries the timestamp
formats supported by the hardware and sets the configuration
values in queue context accordingly.

Fixes: 95276abaaf0a ("vdpa/mlx5: introduce Mellanox vDPA driver")
Cc: stable at dpdk.org

Signed-off-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
---
 drivers/vdpa/mlx5/mlx5_vdpa.c       | 1 +
 drivers/vdpa/mlx5/mlx5_vdpa.h       | 1 +
 drivers/vdpa/mlx5/mlx5_vdpa_event.c | 8 ++++++++
 3 files changed, 10 insertions(+)

diff --git a/drivers/vdpa/mlx5/mlx5_vdpa.c b/drivers/vdpa/mlx5/mlx5_vdpa.c
index 4c2d886bd7..af15977800 100644
--- a/drivers/vdpa/mlx5/mlx5_vdpa.c
+++ b/drivers/vdpa/mlx5/mlx5_vdpa.c
@@ -745,6 +745,7 @@ mlx5_vdpa_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 	priv->caps = attr.vdpa;
 	priv->log_max_rqt_size = attr.log_max_rqt_size;
 	priv->num_lag_ports = attr.num_lag_ports;
+	priv->qp_ts_format = attr.qp_ts_format;
 	if (attr.num_lag_ports == 0)
 		priv->num_lag_ports = 1;
 	priv->ctx = ctx;
diff --git a/drivers/vdpa/mlx5/mlx5_vdpa.h b/drivers/vdpa/mlx5/mlx5_vdpa.h
index 98c71aad4c..d93b430c97 100644
--- a/drivers/vdpa/mlx5/mlx5_vdpa.h
+++ b/drivers/vdpa/mlx5/mlx5_vdpa.h
@@ -152,6 +152,7 @@ struct mlx5_vdpa_priv {
 	struct mlx5_devx_obj *tiss[16]; /* TIS list for each LAG port. */
 	uint16_t nr_virtqs;
 	uint8_t num_lag_ports;
+	uint8_t qp_ts_format;
 	uint64_t features; /* Negotiated features. */
 	uint16_t log_max_rqt_size;
 	struct mlx5_vdpa_steer steer;
diff --git a/drivers/vdpa/mlx5/mlx5_vdpa_event.c b/drivers/vdpa/mlx5/mlx5_vdpa_event.c
index 86adc864f5..fcc6b30a05 100644
--- a/drivers/vdpa/mlx5/mlx5_vdpa_event.c
+++ b/drivers/vdpa/mlx5/mlx5_vdpa_event.c
@@ -662,6 +662,10 @@ mlx5_vdpa_event_qp_create(struct mlx5_vdpa_priv *priv, uint16_t desc_n,
 	if (mlx5_vdpa_cq_create(priv, log_desc_n, callfd, &eqp->cq))
 		return -1;
 	attr.pd = priv->pdn;
+	attr.ts_format =
+		priv->qp_ts_format == MLX5_HCA_CAP_TIMESTAMP_FORMAT_FR ?
+			MLX5_QPC_TIMESTAMP_FORMAT_FREE_RUNNING :
+			MLX5_QPC_TIMESTAMP_FORMAT_DEFAULT;
 	eqp->fw_qp = mlx5_devx_cmd_create_qp(priv->ctx, &attr);
 	if (!eqp->fw_qp) {
 		DRV_LOG(ERR, "Failed to create FW QP(%u).", rte_errno);
@@ -692,6 +696,10 @@ mlx5_vdpa_event_qp_create(struct mlx5_vdpa_priv *priv, uint16_t desc_n,
 	attr.wq_umem_offset = 0;
 	attr.dbr_umem_id = eqp->umem_obj->umem_id;
 	attr.dbr_address = (1 << log_desc_n) * MLX5_WSEG_SIZE;
+	attr.ts_format =
+		priv->qp_ts_format == MLX5_HCA_CAP_TIMESTAMP_FORMAT_FR ?
+			MLX5_QPC_TIMESTAMP_FORMAT_FREE_RUNNING :
+			MLX5_QPC_TIMESTAMP_FORMAT_DEFAULT;
 	eqp->sw_qp = mlx5_devx_cmd_create_qp(priv->ctx, &attr);
 	if (!eqp->sw_qp) {
 		DRV_LOG(ERR, "Failed to create SW QP(%u).", rte_errno);
-- 
2.28.0