common/mlx5: query vDPA DevX capabilities

[dpdk.git] / drivers / common / mlx5 / mlx5_devx_cmds.c

diff --git a/drivers/common/mlx5/mlx5_devx_cmds.c b/drivers/common/mlx5/mlx5_devx_cmds.c
index 4d94f92..3a10ff0 100644 (file)
--- a/drivers/common/mlx5/mlx5_devx_cmds.c
+++ b/drivers/common/mlx5/mlx5_devx_cmds.c
@@ -284,6 +284,91 @@ error:
        return rc;
 }
 
+/**
+ * Query NIC vDPA attributes.
+ *
+ * @param[in] ctx
+ *   ibv contexts returned from mlx5dv_open_device.
+ * @param[out] vdpa_attr
+ *   vDPA Attributes structure to fill.
+ */
+static void
+mlx5_devx_cmd_query_hca_vdpa_attr(struct ibv_context *ctx,
+                                 struct mlx5_hca_vdpa_attr *vdpa_attr)
+{
+       uint32_t in[MLX5_ST_SZ_DW(query_hca_cap_in)] = {0};
+       uint32_t out[MLX5_ST_SZ_DW(query_hca_cap_out)] = {0};
+       void *hcattr = MLX5_ADDR_OF(query_hca_cap_out, out, capability);
+       int status, syndrome, rc;
+
+       MLX5_SET(query_hca_cap_in, in, opcode, MLX5_CMD_OP_QUERY_HCA_CAP);
+       MLX5_SET(query_hca_cap_in, in, op_mod,
+                MLX5_GET_HCA_CAP_OP_MOD_VDPA_EMULATION |
+                MLX5_HCA_CAP_OPMOD_GET_CUR);
+       rc = mlx5_glue->devx_general_cmd(ctx, in, sizeof(in), out, sizeof(out));
+       status = MLX5_GET(query_hca_cap_out, out, status);
+       syndrome = MLX5_GET(query_hca_cap_out, out, syndrome);
+       if (rc || status) {
+               RTE_LOG(DEBUG, PMD, "Failed to query devx VDPA capabilities,"
+                       " status %x, syndrome = %x", status, syndrome);
+               vdpa_attr->valid = 0;
+       } else {
+               vdpa_attr->valid = 1;
+               vdpa_attr->desc_tunnel_offload_type =
+                       MLX5_GET(virtio_emulation_cap, hcattr,
+                                desc_tunnel_offload_type);
+               vdpa_attr->eth_frame_offload_type =
+                       MLX5_GET(virtio_emulation_cap, hcattr,
+                                eth_frame_offload_type);
+               vdpa_attr->virtio_version_1_0 =
+                       MLX5_GET(virtio_emulation_cap, hcattr,
+                                virtio_version_1_0);
+               vdpa_attr->tso_ipv4 = MLX5_GET(virtio_emulation_cap, hcattr,
+                                              tso_ipv4);
+               vdpa_attr->tso_ipv6 = MLX5_GET(virtio_emulation_cap, hcattr,
+                                              tso_ipv6);
+               vdpa_attr->tx_csum = MLX5_GET(virtio_emulation_cap, hcattr,
+                                             tx_csum);
+               vdpa_attr->rx_csum = MLX5_GET(virtio_emulation_cap, hcattr,
+                                             rx_csum);
+               vdpa_attr->event_mode = MLX5_GET(virtio_emulation_cap, hcattr,
+                                                event_mode);
+               vdpa_attr->virtio_queue_type =
+                       MLX5_GET(virtio_emulation_cap, hcattr,
+                                virtio_queue_type);
+               vdpa_attr->log_doorbell_stride =
+                       MLX5_GET(virtio_emulation_cap, hcattr,
+                                log_doorbell_stride);
+               vdpa_attr->log_doorbell_bar_size =
+                       MLX5_GET(virtio_emulation_cap, hcattr,
+                                log_doorbell_bar_size);
+               vdpa_attr->doorbell_bar_offset =
+                       MLX5_GET64(virtio_emulation_cap, hcattr,
+                                  doorbell_bar_offset);
+               vdpa_attr->max_num_virtio_queues =
+                       MLX5_GET(virtio_emulation_cap, hcattr,
+                                max_num_virtio_queues);
+               vdpa_attr->umem_1_buffer_param_a =
+                       MLX5_GET(virtio_emulation_cap, hcattr,
+                                umem_1_buffer_param_a);
+               vdpa_attr->umem_1_buffer_param_b =
+                       MLX5_GET(virtio_emulation_cap, hcattr,
+                                umem_1_buffer_param_b);
+               vdpa_attr->umem_2_buffer_param_a =
+                       MLX5_GET(virtio_emulation_cap, hcattr,
+                                umem_2_buffer_param_a);
+               vdpa_attr->umem_2_buffer_param_b =
+                       MLX5_GET(virtio_emulation_cap, hcattr,
+                                umem_2_buffer_param_a);
+               vdpa_attr->umem_3_buffer_param_a =
+                       MLX5_GET(virtio_emulation_cap, hcattr,
+                                umem_3_buffer_param_a);
+               vdpa_attr->umem_3_buffer_param_b =
+                       MLX5_GET(virtio_emulation_cap, hcattr,
+                                umem_3_buffer_param_b);
+       }
+}
+
 /**
  * Query HCA attributes.
  * Using those attributes we can check on run time if the device
@@ -343,6 +428,9 @@ mlx5_devx_cmd_query_hca_attr(struct ibv_context *ctx,
        attr->flex_parser_protocols = MLX5_GET(cmd_hca_cap, hcattr,
                                               flex_parser_protocols);
        attr->qos.sup = MLX5_GET(cmd_hca_cap, hcattr, qos);
+       attr->vdpa.valid = !!(MLX5_GET64(cmd_hca_cap, hcattr,
+                                        general_obj_types) &
+                             MLX5_GENERAL_OBJ_TYPES_CAP_VIRTQ_NET_Q);
        if (attr->qos.sup) {
                MLX5_SET(query_hca_cap_in, in, op_mod,
                         MLX5_GET_HCA_CAP_OP_MOD_QOS_CAP |
@@ -367,6 +455,8 @@ mlx5_devx_cmd_query_hca_attr(struct ibv_context *ctx,
                attr->qos.flow_meter_reg_share =
                        MLX5_GET(qos_cap, hcattr, flow_meter_reg_share);
        }
+       if (attr->vdpa.valid)
+               mlx5_devx_cmd_query_hca_vdpa_attr(ctx, &attr->vdpa);
        if (!attr->eth_net_offloads)
                return 0;