X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;ds=sidebyside;f=drivers%2Fvdpa%2Fmlx5%2Fmlx5_vdpa_virtq.c;h=3e6126492b38eb109a7135fef3417c94b8811e22;hb=9c99878aa1b16de26fcce82c112b401766dd910e;hp=32a13ceba76e0608cde7cf1dd751090138b517f9;hpb=62c813706e41f8f6ca5672fcea0f6f0be6d905a4;p=dpdk.git

diff --git a/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c b/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c
index 32a13ceba7..3e6126492b 100644
--- a/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c
+++ b/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c
@@ -36,6 +36,17 @@ mlx5_vdpa_virtq_handler(void *cb_arg)
 		break;
 	} while (1);
 	rte_write32(virtq->index, priv->virtq_db_addr);
+	if (virtq->notifier_state == MLX5_VDPA_NOTIFIER_STATE_DISABLED) {
+		if (rte_vhost_host_notifier_ctrl(priv->vid, virtq->index, true))
+			virtq->notifier_state = MLX5_VDPA_NOTIFIER_STATE_ERR;
+		else
+			virtq->notifier_state =
+					       MLX5_VDPA_NOTIFIER_STATE_ENABLED;
+		DRV_LOG(INFO, "Virtq %u notifier state is %s.", virtq->index,
+			virtq->notifier_state ==
+				MLX5_VDPA_NOTIFIER_STATE_ENABLED ? "enabled" :
+								    "disabled");
+	}
 	DRV_LOG(DEBUG, "Ring virtq %u doorbell.", virtq->index);
 }
 
@@ -46,7 +57,7 @@ mlx5_vdpa_virtq_unset(struct mlx5_vdpa_virtq *virtq)
 	int retries = MLX5_VDPA_INTR_RETRIES;
 	int ret = -EAGAIN;
 
-	if (virtq->intr_handle.fd) {
+	if (virtq->intr_handle.fd != -1) {
 		while (retries-- && ret == -EAGAIN) {
 			ret = rte_intr_callback_unregister(&virtq->intr_handle,
 							mlx5_vdpa_virtq_handler,
@@ -59,12 +70,11 @@ mlx5_vdpa_virtq_unset(struct mlx5_vdpa_virtq *virtq)
 				usleep(MLX5_VDPA_INTR_RETRIES_USEC);
 			}
 		}
-		memset(&virtq->intr_handle, 0, sizeof(virtq->intr_handle));
+		virtq->intr_handle.fd = -1;
 	}
-	if (virtq->virtq) {
+	if (virtq->virtq)
 		claim_zero(mlx5_devx_cmd_destroy(virtq->virtq));
-		virtq->virtq = NULL;
-	}
+	virtq->virtq = NULL;
 	for (i = 0; i < RTE_DIM(virtq->umems); ++i) {
 		if (virtq->umems[i].obj)
 			claim_zero(mlx5_glue->devx_umem_dereg
@@ -73,26 +83,24 @@ mlx5_vdpa_virtq_unset(struct mlx5_vdpa_virtq *virtq)
 			rte_free(virtq->umems[i].buf);
 	}
 	memset(&virtq->umems, 0, sizeof(virtq->umems));
+	if (virtq->counters) {
+		claim_zero(mlx5_devx_cmd_destroy(virtq->counters));
+		virtq->counters = NULL;
+	}
+	memset(&virtq->reset, 0, sizeof(virtq->reset));
 	if (virtq->eqp.fw_qp)
 		mlx5_vdpa_event_qp_destroy(&virtq->eqp);
+	virtq->notifier_state = MLX5_VDPA_NOTIFIER_STATE_DISABLED;
 	return 0;
 }
 
 void
 mlx5_vdpa_virtqs_release(struct mlx5_vdpa_priv *priv)
 {
-	struct mlx5_vdpa_virtq *entry;
-	struct mlx5_vdpa_virtq *next;
+	int i;
 
-	entry = SLIST_FIRST(&priv->virtq_list);
-	while (entry) {
-		next = SLIST_NEXT(entry, next);
-		mlx5_vdpa_virtq_unset(entry);
-		SLIST_REMOVE(&priv->virtq_list, entry, mlx5_vdpa_virtq, next);
-		rte_free(entry);
-		entry = next;
-	}
-	SLIST_INIT(&priv->virtq_list);
+	for (i = 0; i < priv->nr_virtqs; i++)
+		mlx5_vdpa_virtq_unset(&priv->virtqs[i]);
 	if (priv->tis) {
 		claim_zero(mlx5_devx_cmd_destroy(priv->tis));
 		priv->tis = NULL;
@@ -105,14 +113,11 @@ mlx5_vdpa_virtqs_release(struct mlx5_vdpa_priv *priv)
 		claim_zero(munmap(priv->virtq_db_addr, priv->var->length));
 		priv->virtq_db_addr = NULL;
 	}
-	if (priv->var) {
-		mlx5_glue->dv_free_var(priv->var);
-		priv->var = NULL;
-	}
 	priv->features = 0;
+	priv->nr_virtqs = 0;
 }
 
-static int
+int
 mlx5_vdpa_virtq_modify(struct mlx5_vdpa_virtq *virtq, int state)
 {
 	struct mlx5_devx_virtq_attr attr = {
@@ -125,6 +130,33 @@ mlx5_vdpa_virtq_modify(struct mlx5_vdpa_virtq *virtq, int state)
 	return mlx5_devx_cmd_modify_virtq(virtq->virtq, &attr);
 }
 
+int
+mlx5_vdpa_virtq_stop(struct mlx5_vdpa_priv *priv, int index)
+{
+	struct mlx5_devx_virtq_attr attr = {0};
+	struct mlx5_vdpa_virtq *virtq = &priv->virtqs[index];
+	int ret = mlx5_vdpa_virtq_modify(virtq, 0);
+
+	if (ret)
+		return -1;
+	if (mlx5_devx_cmd_query_virtq(virtq->virtq, &attr)) {
+		DRV_LOG(ERR, "Failed to query virtq %d.", index);
+		return -1;
+	}
+	DRV_LOG(INFO, "Query vid %d vring %d: hw_available_idx=%d, "
+		"hw_used_index=%d", priv->vid, index,
+		attr.hw_available_index, attr.hw_used_index);
+	ret = rte_vhost_set_vring_base(priv->vid, index,
+				       attr.hw_available_index,
+				       attr.hw_used_index);
+	if (ret) {
+		DRV_LOG(ERR, "Failed to set virtq %d base.", index);
+		return -1;
+	}
+	DRV_LOG(DEBUG, "vid %u virtq %u was stopped.", priv->vid, index);
+	return 0;
+}
+
 static uint64_t
 mlx5_vdpa_hva_to_gpa(struct rte_vhost_memory *mem, uint64_t hva)
 {
@@ -144,9 +176,9 @@ mlx5_vdpa_hva_to_gpa(struct rte_vhost_memory *mem, uint64_t hva)
 }
 
 static int
-mlx5_vdpa_virtq_setup(struct mlx5_vdpa_priv *priv,
-		      struct mlx5_vdpa_virtq *virtq, int index)
+mlx5_vdpa_virtq_setup(struct mlx5_vdpa_priv *priv, int index)
 {
+	struct mlx5_vdpa_virtq *virtq = &priv->virtqs[index];
 	struct rte_vhost_vring vq;
 	struct mlx5_devx_virtq_attr attr = {0};
 	uint64_t gpa;
@@ -189,6 +221,16 @@ mlx5_vdpa_virtq_setup(struct mlx5_vdpa_priv *priv,
 		DRV_LOG(INFO, "Virtq %d is, for sure, working by poll mode, no"
 			" need event QPs and event mechanism.", index);
 	}
+	if (priv->caps.queue_counters_valid) {
+		virtq->counters = mlx5_devx_cmd_create_virtio_q_counters
+								    (priv->ctx);
+		if (!virtq->counters) {
+			DRV_LOG(ERR, "Failed to create virtq couners for virtq"
+				" %d.", index);
+			goto error;
+		}
+		attr.counters_obj_id = virtq->counters->id;
+	}
 	/* Setup 3 UMEMs for each virtq. */
 	for (i = 0; i < RTE_DIM(virtq->umems); ++i) {
 		virtq->umems[i].size = priv->caps.umems[i].a * vq.size +
@@ -236,34 +278,53 @@ mlx5_vdpa_virtq_setup(struct mlx5_vdpa_priv *priv,
 		}
 		attr.available_addr = gpa;
 	}
-	rte_vhost_get_vring_base(priv->vid, index, &last_avail_idx,
+	ret = rte_vhost_get_vring_base(priv->vid, index, &last_avail_idx,
 				 &last_used_idx);
-	DRV_LOG(INFO, "vid %d: Init last_avail_idx=%d, last_used_idx=%d for "
-		"virtq %d.", priv->vid, last_avail_idx, last_used_idx, index);
+	if (ret) {
+		last_avail_idx = 0;
+		last_used_idx = 0;
+		DRV_LOG(WARNING, "Couldn't get vring base, idx are set to 0");
+	} else {
+		DRV_LOG(INFO, "vid %d: Init last_avail_idx=%d, last_used_idx=%d for "
+				"virtq %d.", priv->vid, last_avail_idx,
+				last_used_idx, index);
+	}
 	attr.hw_available_index = last_avail_idx;
 	attr.hw_used_index = last_used_idx;
 	attr.q_size = vq.size;
 	attr.mkey = priv->gpa_mkey_index;
 	attr.tis_id = priv->tis->id;
 	attr.queue_index = index;
+	attr.pd = priv->pdn;
 	virtq->virtq = mlx5_devx_cmd_create_virtq(priv->ctx, &attr);
 	virtq->priv = priv;
 	if (!virtq->virtq)
 		goto error;
+	claim_zero(rte_vhost_enable_guest_notification(priv->vid, index, 1));
 	if (mlx5_vdpa_virtq_modify(virtq, 1))
 		goto error;
-	virtq->enable = 1;
+	virtq->priv = priv;
+	rte_write32(virtq->index, priv->virtq_db_addr);
+	/* Setup doorbell mapping. */
 	virtq->intr_handle.fd = vq.kickfd;
-	virtq->intr_handle.type = RTE_INTR_HANDLE_EXT;
-	if (rte_intr_callback_register(&virtq->intr_handle,
-				       mlx5_vdpa_virtq_handler, virtq)) {
-		virtq->intr_handle.fd = 0;
-		DRV_LOG(ERR, "Failed to register virtq %d interrupt.", index);
-		goto error;
+	if (virtq->intr_handle.fd == -1) {
+		DRV_LOG(WARNING, "Virtq %d kickfd is invalid.", index);
 	} else {
-		DRV_LOG(DEBUG, "Register fd %d interrupt for virtq %d.",
-			virtq->intr_handle.fd, index);
+		virtq->intr_handle.type = RTE_INTR_HANDLE_EXT;
+		if (rte_intr_callback_register(&virtq->intr_handle,
+					       mlx5_vdpa_virtq_handler,
+					       virtq)) {
+			virtq->intr_handle.fd = -1;
+			DRV_LOG(ERR, "Failed to register virtq %d interrupt.",
+				index);
+			goto error;
+		} else {
+			DRV_LOG(DEBUG, "Register fd %d interrupt for virtq %d.",
+				virtq->intr_handle.fd, index);
+		}
 	}
+	DRV_LOG(DEBUG, "vid %u virtq %u was created successfully.", priv->vid,
+		index);
 	return 0;
 error:
 	mlx5_vdpa_virtq_unset(virtq);
@@ -329,7 +390,6 @@ int
 mlx5_vdpa_virtqs_prepare(struct mlx5_vdpa_priv *priv)
 {
 	struct mlx5_devx_tis_attr tis_attr = {0};
-	struct mlx5_vdpa_virtq *virtq;
 	uint32_t i;
 	uint16_t nr_vring = rte_vhost_get_vring_num(priv->vid);
 	int ret = rte_vhost_get_negotiated_features(priv->vid, &priv->features);
@@ -338,9 +398,10 @@ mlx5_vdpa_virtqs_prepare(struct mlx5_vdpa_priv *priv)
 		DRV_LOG(ERR, "Failed to configure negotiated features.");
 		return -1;
 	}
-	priv->var = mlx5_glue->dv_alloc_var(priv->ctx, 0);
-	if (!priv->var) {
-		DRV_LOG(ERR, "Failed to allocate VAR %u.\n", errno);
+	if (nr_vring > priv->caps.max_num_virtio_queues * 2) {
+		DRV_LOG(ERR, "Do not support more than %d virtqs(%d).",
+			(int)priv->caps.max_num_virtio_queues * 2,
+			(int)nr_vring);
 		return -1;
 	}
 	/* Always map the entire page. */
@@ -366,18 +427,160 @@ mlx5_vdpa_virtqs_prepare(struct mlx5_vdpa_priv *priv)
 		DRV_LOG(ERR, "Failed to create TIS.");
 		goto error;
 	}
-	for (i = 0; i < nr_vring; i++) {
-		virtq = rte_zmalloc(__func__, sizeof(*virtq), 0);
-		if (!virtq || mlx5_vdpa_virtq_setup(priv, virtq, i)) {
-			if (virtq)
-				rte_free(virtq);
-			goto error;
-		}
-		SLIST_INSERT_HEAD(&priv->virtq_list, virtq, next);
-	}
 	priv->nr_virtqs = nr_vring;
+	for (i = 0; i < nr_vring; i++)
+		if (priv->virtqs[i].enable && mlx5_vdpa_virtq_setup(priv, i))
+			goto error;
 	return 0;
 error:
 	mlx5_vdpa_virtqs_release(priv);
 	return -1;
 }
+
+static int
+mlx5_vdpa_virtq_is_modified(struct mlx5_vdpa_priv *priv,
+			    struct mlx5_vdpa_virtq *virtq)
+{
+	struct rte_vhost_vring vq;
+	int ret = rte_vhost_get_vhost_vring(priv->vid, virtq->index, &vq);
+
+	if (ret)
+		return -1;
+	if (vq.size != virtq->vq_size || vq.kickfd != virtq->intr_handle.fd)
+		return 1;
+	if (virtq->eqp.cq.cq) {
+		if (vq.callfd != virtq->eqp.cq.callfd)
+			return 1;
+	} else if (vq.callfd != -1) {
+		return 1;
+	}
+	return 0;
+}
+
+int
+mlx5_vdpa_virtq_enable(struct mlx5_vdpa_priv *priv, int index, int enable)
+{
+	struct mlx5_vdpa_virtq *virtq = &priv->virtqs[index];
+	int ret;
+
+	DRV_LOG(INFO, "Update virtq %d status %sable -> %sable.", index,
+		virtq->enable ? "en" : "dis", enable ? "en" : "dis");
+	if (!priv->configured) {
+		virtq->enable = !!enable;
+		return 0;
+	}
+	if (virtq->enable == !!enable) {
+		if (!enable)
+			return 0;
+		ret = mlx5_vdpa_virtq_is_modified(priv, virtq);
+		if (ret < 0) {
+			DRV_LOG(ERR, "Virtq %d modify check failed.", index);
+			return -1;
+		}
+		if (ret == 0)
+			return 0;
+		DRV_LOG(INFO, "Virtq %d was modified, recreate it.", index);
+	}
+	if (virtq->virtq) {
+		ret = mlx5_vdpa_virtq_stop(priv, index);
+		if (ret)
+			DRV_LOG(WARNING, "Failed to stop virtq %d.", index);
+		mlx5_vdpa_virtq_unset(virtq);
+	}
+	if (enable) {
+		ret = mlx5_vdpa_virtq_setup(priv, index);
+		if (ret) {
+			DRV_LOG(ERR, "Failed to setup virtq %d.", index);
+			return ret;
+		}
+	}
+	virtq->enable = !!enable;
+	if (is_virtq_recvq(virtq->index, priv->nr_virtqs)) {
+		/* Need to add received virtq to the RQT table of the TIRs. */
+		ret = mlx5_vdpa_steer_update(priv);
+		if (ret) {
+			virtq->enable = !enable;
+			return ret;
+		}
+	}
+	return 0;
+}
+
+int
+mlx5_vdpa_virtq_stats_get(struct mlx5_vdpa_priv *priv, int qid,
+			  struct rte_vdpa_stat *stats, unsigned int n)
+{
+	struct mlx5_vdpa_virtq *virtq = &priv->virtqs[qid];
+	struct mlx5_devx_virtio_q_couners_attr attr = {0};
+	int ret;
+
+	if (!virtq->virtq || !virtq->enable) {
+		DRV_LOG(ERR, "Failed to read virtq %d statistics - virtq "
+			"is invalid.", qid);
+		return -EINVAL;
+	}
+	MLX5_ASSERT(virtq->counters);
+	ret = mlx5_devx_cmd_query_virtio_q_counters(virtq->counters, &attr);
+	if (ret) {
+		DRV_LOG(ERR, "Failed to read virtq %d stats from HW.", qid);
+		return ret;
+	}
+	ret = (int)RTE_MIN(n, (unsigned int)MLX5_VDPA_STATS_MAX);
+	if (ret == MLX5_VDPA_STATS_RECEIVED_DESCRIPTORS)
+		return ret;
+	stats[MLX5_VDPA_STATS_RECEIVED_DESCRIPTORS] = (struct rte_vdpa_stat) {
+		.id = MLX5_VDPA_STATS_RECEIVED_DESCRIPTORS,
+		.value = attr.received_desc - virtq->reset.received_desc,
+	};
+	if (ret == MLX5_VDPA_STATS_COMPLETED_DESCRIPTORS)
+		return ret;
+	stats[MLX5_VDPA_STATS_COMPLETED_DESCRIPTORS] = (struct rte_vdpa_stat) {
+		.id = MLX5_VDPA_STATS_COMPLETED_DESCRIPTORS,
+		.value = attr.completed_desc - virtq->reset.completed_desc,
+	};
+	if (ret == MLX5_VDPA_STATS_BAD_DESCRIPTOR_ERRORS)
+		return ret;
+	stats[MLX5_VDPA_STATS_BAD_DESCRIPTOR_ERRORS] = (struct rte_vdpa_stat) {
+		.id = MLX5_VDPA_STATS_BAD_DESCRIPTOR_ERRORS,
+		.value = attr.bad_desc_errors - virtq->reset.bad_desc_errors,
+	};
+	if (ret == MLX5_VDPA_STATS_EXCEED_MAX_CHAIN)
+		return ret;
+	stats[MLX5_VDPA_STATS_EXCEED_MAX_CHAIN] = (struct rte_vdpa_stat) {
+		.id = MLX5_VDPA_STATS_EXCEED_MAX_CHAIN,
+		.value = attr.exceed_max_chain - virtq->reset.exceed_max_chain,
+	};
+	if (ret == MLX5_VDPA_STATS_INVALID_BUFFER)
+		return ret;
+	stats[MLX5_VDPA_STATS_INVALID_BUFFER] = (struct rte_vdpa_stat) {
+		.id = MLX5_VDPA_STATS_INVALID_BUFFER,
+		.value = attr.invalid_buffer - virtq->reset.invalid_buffer,
+	};
+	if (ret == MLX5_VDPA_STATS_COMPLETION_ERRORS)
+		return ret;
+	stats[MLX5_VDPA_STATS_COMPLETION_ERRORS] = (struct rte_vdpa_stat) {
+		.id = MLX5_VDPA_STATS_COMPLETION_ERRORS,
+		.value = attr.error_cqes - virtq->reset.error_cqes,
+	};
+	return ret;
+}
+
+int
+mlx5_vdpa_virtq_stats_reset(struct mlx5_vdpa_priv *priv, int qid)
+{
+	struct mlx5_vdpa_virtq *virtq = &priv->virtqs[qid];
+	int ret;
+
+	if (!virtq->virtq || !virtq->enable) {
+		DRV_LOG(ERR, "Failed to read virtq %d statistics - virtq "
+			"is invalid.", qid);
+		return -EINVAL;
+	}
+	MLX5_ASSERT(virtq->counters);
+	ret = mlx5_devx_cmd_query_virtio_q_counters(virtq->counters,
+						    &virtq->reset);
+	if (ret)
+		DRV_LOG(ERR, "Failed to read virtq %d reset stats from HW.",
+			qid);
+	return ret;
+}