vdpa/mlx5: prepare HW queues

[dpdk.git] / drivers / vdpa / mlx5 / mlx5_vdpa.h

diff --git a/drivers/vdpa/mlx5/mlx5_vdpa.h b/drivers/vdpa/mlx5/mlx5_vdpa.h
index f367991..6282635 100644 (file)
--- a/drivers/vdpa/mlx5/mlx5_vdpa.h
+++ b/drivers/vdpa/mlx5/mlx5_vdpa.h
@@ -15,9 +15,40 @@
 #ifdef PEDANTIC
 #pragma GCC diagnostic error "-Wpedantic"
 #endif
+#include <rte_spinlock.h>
+#include <rte_interrupts.h>
 
 #include <mlx5_glue.h>
 #include <mlx5_devx_cmds.h>
+#include <mlx5_prm.h>
+
+
+#define MLX5_VDPA_INTR_RETRIES 256
+#define MLX5_VDPA_INTR_RETRIES_USEC 1000
+
+struct mlx5_vdpa_cq {
+       uint16_t log_desc_n;
+       uint32_t cq_ci:24;
+       uint32_t arm_sn:2;
+       rte_spinlock_t sl;
+       struct mlx5_devx_obj *cq;
+       struct mlx5dv_devx_umem *umem_obj;
+       union {
+               volatile void *umem_buf;
+               volatile struct mlx5_cqe *cqes;
+       };
+       volatile uint32_t *db_rec;
+       uint64_t errors;
+};
+
+struct mlx5_vdpa_event_qp {
+       struct mlx5_vdpa_cq cq;
+       struct mlx5_devx_obj *fw_qp;
+       struct mlx5_devx_obj *sw_qp;
+       struct mlx5dv_devx_umem *umem_obj;
+       void *umem_buf;
+       volatile uint32_t *db_rec;
+};
 
 struct mlx5_vdpa_query_mr {
        SLIST_ENTRY(mlx5_vdpa_query_mr) next;
@@ -40,6 +71,10 @@ struct mlx5_vdpa_priv {
        uint32_t gpa_mkey_index;
        struct ibv_mr *null_mr;
        struct rte_vhost_memory *vmem;
+       uint32_t eqn;
+       struct mlx5dv_devx_event_channel *eventc;
+       struct mlx5dv_devx_uar *uar;
+       struct rte_intr_handle intr_handle;
        SLIST_HEAD(mr_list, mlx5_vdpa_query_mr) mr_list;
 };
 
@@ -63,4 +98,58 @@ void mlx5_vdpa_mem_dereg(struct mlx5_vdpa_priv *priv);
  */
 int mlx5_vdpa_mem_register(struct mlx5_vdpa_priv *priv);
 
+
+/**
+ * Create an event QP and all its related resources.
+ *
+ * @param[in] priv
+ *   The vdpa driver private structure.
+ * @param[in] desc_n
+ *   Number of descriptors.
+ * @param[in] callfd
+ *   The guest notification file descriptor.
+ * @param[in/out] eqp
+ *   Pointer to the event QP structure.
+ *
+ * @return
+ *   0 on success, -1 otherwise and rte_errno is set.
+ */
+int mlx5_vdpa_event_qp_create(struct mlx5_vdpa_priv *priv, uint16_t desc_n,
+                             int callfd, struct mlx5_vdpa_event_qp *eqp);
+
+/**
+ * Destroy an event QP and all its related resources.
+ *
+ * @param[in/out] eqp
+ *   Pointer to the event QP structure.
+ */
+void mlx5_vdpa_event_qp_destroy(struct mlx5_vdpa_event_qp *eqp);
+
+/**
+ * Release all the event global resources.
+ *
+ * @param[in] priv
+ *   The vdpa driver private structure.
+ */
+void mlx5_vdpa_event_qp_global_release(struct mlx5_vdpa_priv *priv);
+
+/**
+ * Setup CQE event.
+ *
+ * @param[in] priv
+ *   The vdpa driver private structure.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int mlx5_vdpa_cqe_event_setup(struct mlx5_vdpa_priv *priv);
+
+/**
+ * Unset CQE event .
+ *
+ * @param[in] priv
+ *   The vdpa driver private structure.
+ */
+void mlx5_vdpa_cqe_event_unset(struct mlx5_vdpa_priv *priv);
+
 #endif /* RTE_PMD_MLX5_VDPA_H_ */