1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2019 Mellanox Technologies, Ltd
5 #ifndef RTE_PMD_MLX5_VDPA_H_
6 #define RTE_PMD_MLX5_VDPA_H_
8 #include <linux/virtio_net.h>
12 #pragma GCC diagnostic ignored "-Wpedantic"
15 #include <vdpa_driver.h>
16 #include <rte_vhost.h>
18 #pragma GCC diagnostic error "-Wpedantic"
20 #include <rte_spinlock.h>
21 #include <rte_interrupts.h>
23 #include <mlx5_glue.h>
24 #include <mlx5_devx_cmds.h>
25 #include <mlx5_common_devx.h>
29 #define MLX5_VDPA_INTR_RETRIES 256
30 #define MLX5_VDPA_INTR_RETRIES_USEC 1000
32 #ifndef VIRTIO_F_ORDER_PLATFORM
33 #define VIRTIO_F_ORDER_PLATFORM 36
36 #ifndef VIRTIO_F_RING_PACKED
37 #define VIRTIO_F_RING_PACKED 34
40 #define MLX5_VDPA_DEFAULT_TIMER_DELAY_US 0u
41 #define MLX5_VDPA_DEFAULT_TIMER_STEP_US 1u
50 struct mlx5_devx_cq cq_obj;
54 struct mlx5_vdpa_event_qp {
55 struct mlx5_vdpa_cq cq;
56 struct mlx5_devx_obj *fw_qp;
57 struct mlx5_devx_qp sw_qp;
61 struct mlx5_vdpa_query_mr {
62 SLIST_ENTRY(mlx5_vdpa_query_mr) next;
65 struct mlx5_devx_obj *mkey;
71 MLX5_VDPA_NOTIFIER_STATE_DISABLED,
72 MLX5_VDPA_NOTIFIER_STATE_ENABLED,
73 MLX5_VDPA_NOTIFIER_STATE_ERR
76 struct mlx5_vdpa_virtq {
77 SLIST_ENTRY(mlx5_vdpa_virtq) next;
81 uint8_t notifier_state;
83 uint32_t configured:1;
85 pthread_mutex_t virtq_lock;
86 struct mlx5_vdpa_priv *priv;
87 struct mlx5_devx_obj *virtq;
88 struct mlx5_devx_obj *counters;
89 struct mlx5_vdpa_event_qp eqp;
91 struct mlx5dv_devx_umem *obj;
95 struct rte_intr_handle *intr_handle;
96 uint64_t err_time[3]; /* RDTSC time of recent errors. */
98 struct mlx5_devx_virtio_q_couners_attr stats;
99 struct mlx5_devx_virtio_q_couners_attr reset;
102 struct mlx5_vdpa_steer {
103 struct mlx5_devx_obj *rqt;
107 struct mlx5dv_flow_matcher *matcher;
108 struct mlx5_devx_obj *tir;
115 MLX5_VDPA_EVENT_MODE_DYNAMIC_TIMER,
116 MLX5_VDPA_EVENT_MODE_FIXED_TIMER,
117 MLX5_VDPA_EVENT_MODE_ONLY_INTERRUPT
120 enum mlx5_dev_state {
121 MLX5_VDPA_STATE_PROBED = 0,
122 MLX5_VDPA_STATE_CONFIGURED,
123 MLX5_VDPA_STATE_IN_PROGRESS /* Shutting down. */
126 struct mlx5_vdpa_priv {
127 TAILQ_ENTRY(mlx5_vdpa_priv) next;
129 enum mlx5_dev_state state;
130 rte_spinlock_t db_lock;
131 pthread_mutex_t steer_update_lock;
132 uint64_t no_traffic_counter;
135 int event_core; /* Event thread cpu affinity core. */
137 uint32_t timer_delay_us;
138 uint32_t no_traffic_max;
139 uint8_t hw_latency_mode; /* Hardware CQ moderation mode. */
140 uint16_t hw_max_latency_us; /* Hardware CQ moderation period in usec. */
141 uint16_t hw_max_pending_comp; /* Hardware CQ moderation counter. */
142 uint16_t queue_size; /* virtq depth for pre-creating virtq resource */
143 uint16_t queues; /* Max virtq pair for pre-creating virtq resource */
144 struct rte_vdpa_device *vdev; /* vDPA device. */
145 struct mlx5_common_device *cdev; /* Backend mlx5 device. */
146 int vid; /* vhost device id. */
147 struct mlx5_hca_vdpa_attr caps;
148 uint32_t gpa_mkey_index;
149 struct ibv_mr *null_mr;
150 struct rte_vhost_memory *vmem;
151 struct mlx5dv_devx_event_channel *eventc;
152 struct mlx5dv_devx_event_channel *err_chnl;
154 struct rte_intr_handle *err_intr_handle;
155 struct mlx5_devx_obj *td;
156 struct mlx5_devx_obj *tiss[16]; /* TIS list for each LAG port. */
158 uint8_t num_lag_ports;
159 uint64_t features; /* Negotiated features. */
160 uint16_t log_max_rqt_size;
161 struct mlx5_vdpa_steer steer;
162 struct mlx5dv_var *var;
164 struct mlx5_pmd_wrapped_mr lm_mr;
165 SLIST_HEAD(mr_list, mlx5_vdpa_query_mr) mr_list;
166 struct mlx5_vdpa_virtq virtqs[];
170 MLX5_VDPA_STATS_RECEIVED_DESCRIPTORS,
171 MLX5_VDPA_STATS_COMPLETED_DESCRIPTORS,
172 MLX5_VDPA_STATS_BAD_DESCRIPTOR_ERRORS,
173 MLX5_VDPA_STATS_EXCEED_MAX_CHAIN,
174 MLX5_VDPA_STATS_INVALID_BUFFER,
175 MLX5_VDPA_STATS_COMPLETION_ERRORS,
180 * Check whether virtq is for traffic receive.
181 * According to VIRTIO_NET Spec the virtqueues index identity its type by:
186 * 2(N-1)+1 transmitqN
189 static inline uint8_t
190 is_virtq_recvq(int virtq_index, int nr_vring)
192 if (virtq_index % 2 == 0 && virtq_index != nr_vring - 1)
198 * Release all the prepared memory regions and all their related resources.
201 * The vdpa driver private structure.
203 void mlx5_vdpa_mem_dereg(struct mlx5_vdpa_priv *priv);
206 * Register all the memory regions of the virtio device to the HW and allocate
207 * all their related resources.
210 * The vdpa driver private structure.
213 * 0 on success, a negative errno value otherwise and rte_errno is set.
215 int mlx5_vdpa_mem_register(struct mlx5_vdpa_priv *priv);
219 * Create an event QP and all its related resources.
222 * The vdpa driver private structure.
224 * Number of descriptors.
226 * The guest notification file descriptor.
227 * @param[in/out] virtq
228 * Pointer to the virt-queue structure.
231 * 0 on success, -1 otherwise and rte_errno is set.
234 mlx5_vdpa_event_qp_prepare(struct mlx5_vdpa_priv *priv, uint16_t desc_n,
235 int callfd, struct mlx5_vdpa_virtq *virtq);
238 * Destroy an event QP and all its related resources.
241 * Pointer to the event QP structure.
243 void mlx5_vdpa_event_qp_destroy(struct mlx5_vdpa_event_qp *eqp);
246 * Create all the event global resources.
249 * The vdpa driver private structure.
252 mlx5_vdpa_event_qp_global_prepare(struct mlx5_vdpa_priv *priv);
255 * Release all the event global resources.
258 * The vdpa driver private structure.
260 void mlx5_vdpa_event_qp_global_release(struct mlx5_vdpa_priv *priv);
266 * The vdpa driver private structure.
269 * 0 on success, a negative errno value otherwise and rte_errno is set.
271 int mlx5_vdpa_cqe_event_setup(struct mlx5_vdpa_priv *priv);
277 * The vdpa driver private structure.
279 void mlx5_vdpa_cqe_event_unset(struct mlx5_vdpa_priv *priv);
282 * Setup error interrupt handler.
285 * The vdpa driver private structure.
288 * 0 on success, a negative errno value otherwise and rte_errno is set.
290 int mlx5_vdpa_err_event_setup(struct mlx5_vdpa_priv *priv);
293 * Unset error event handler.
296 * The vdpa driver private structure.
298 void mlx5_vdpa_err_event_unset(struct mlx5_vdpa_priv *priv);
301 * Release virtqs and resources except that to be reused.
304 * The vdpa driver private structure.
306 void mlx5_vdpa_virtqs_release(struct mlx5_vdpa_priv *priv);
309 * Cleanup cached resources of all virtqs.
312 * The vdpa driver private structure.
314 void mlx5_vdpa_virtqs_cleanup(struct mlx5_vdpa_priv *priv);
317 * Create all the HW virtqs resources and all their related resources.
320 * The vdpa driver private structure.
323 * 0 on success, a negative errno value otherwise and rte_errno is set.
325 int mlx5_vdpa_virtqs_prepare(struct mlx5_vdpa_priv *priv);
328 * Enable\Disable virtq..
331 * The vdpa driver private structure.
335 * Set to enable, otherwise disable.
338 * 0 on success, a negative value otherwise.
340 int mlx5_vdpa_virtq_enable(struct mlx5_vdpa_priv *priv, int index, int enable);
343 * Unset steering - stop traffic.
346 * The vdpa driver private structure.
348 void mlx5_vdpa_steer_unset(struct mlx5_vdpa_priv *priv);
351 * Update steering according to the received queues status.
354 * The vdpa driver private structure.
357 * 0 on success, a negative value otherwise.
359 int mlx5_vdpa_steer_update(struct mlx5_vdpa_priv *priv);
362 * Setup steering and all its related resources to enable RSS traffic from the
363 * device to all the Rx host queues.
366 * The vdpa driver private structure.
369 * 0 on success, a negative value otherwise.
371 int mlx5_vdpa_steer_setup(struct mlx5_vdpa_priv *priv);
374 * Enable\Disable live migration logging.
377 * The vdpa driver private structure.
379 * Set for enable, unset for disable.
382 * 0 on success, a negative value otherwise.
384 int mlx5_vdpa_logging_enable(struct mlx5_vdpa_priv *priv, int enable);
387 * Set dirty bitmap logging to allow live migration.
390 * The vdpa driver private structure.
391 * @param[in] log_base
393 * @param[in] log_size
397 * 0 on success, a negative value otherwise.
399 int mlx5_vdpa_dirty_bitmap_set(struct mlx5_vdpa_priv *priv, uint64_t log_base,
403 * Log all virtqs information for live migration.
406 * The vdpa driver private structure.
408 * Set for enable, unset for disable.
411 * 0 on success, a negative value otherwise.
413 int mlx5_vdpa_lm_log(struct mlx5_vdpa_priv *priv);
416 * Modify virtq state to be ready or suspend.
419 * The vdpa driver private virtq structure.
421 * Set for ready, otherwise suspend.
424 * 0 on success, a negative value otherwise.
426 int mlx5_vdpa_virtq_modify(struct mlx5_vdpa_virtq *virtq, int state);
429 * Stop virtq before destroying it.
432 * The vdpa driver private structure.
437 * 0 on success, a negative value otherwise.
439 int mlx5_vdpa_virtq_stop(struct mlx5_vdpa_priv *priv, int index);
442 * Query virtq information.
445 * The vdpa driver private structure.
450 * 0 on success, a negative value otherwise.
452 int mlx5_vdpa_virtq_query(struct mlx5_vdpa_priv *priv, int index);
455 * Get virtq statistics.
458 * The vdpa driver private structure.
462 * The virtq statistics array to fill.
464 * The number of elements in @p stats array.
467 * A negative value on error, otherwise the number of entries filled in the
471 mlx5_vdpa_virtq_stats_get(struct mlx5_vdpa_priv *priv, int qid,
472 struct rte_vdpa_stat *stats, unsigned int n);
475 * Reset virtq statistics.
478 * The vdpa driver private structure.
483 * A negative value on error, otherwise 0.
486 mlx5_vdpa_virtq_stats_reset(struct mlx5_vdpa_priv *priv, int qid);
489 * Drain virtq CQ CQE.
492 * The vdpa driver private structure.
495 mlx5_vdpa_drain_cq(struct mlx5_vdpa_priv *priv);
498 mlx5_vdpa_is_modify_virtq_supported(struct mlx5_vdpa_priv *priv);
499 #endif /* RTE_PMD_MLX5_VDPA_H_ */