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;
84 struct mlx5_vdpa_priv *priv;
85 struct mlx5_devx_obj *virtq;
86 struct mlx5_devx_obj *counters;
87 struct mlx5_vdpa_event_qp eqp;
89 struct mlx5dv_devx_umem *obj;
93 struct rte_intr_handle *intr_handle;
94 uint64_t err_time[3]; /* RDTSC time of recent errors. */
96 struct mlx5_devx_virtio_q_couners_attr stats;
97 struct mlx5_devx_virtio_q_couners_attr reset;
100 struct mlx5_vdpa_steer {
101 struct mlx5_devx_obj *rqt;
105 struct mlx5dv_flow_matcher *matcher;
106 struct mlx5_devx_obj *tir;
113 MLX5_VDPA_EVENT_MODE_DYNAMIC_TIMER,
114 MLX5_VDPA_EVENT_MODE_FIXED_TIMER,
115 MLX5_VDPA_EVENT_MODE_ONLY_INTERRUPT
118 enum mlx5_dev_state {
119 MLX5_VDPA_STATE_PROBED = 0,
120 MLX5_VDPA_STATE_CONFIGURED,
121 MLX5_VDPA_STATE_IN_PROGRESS /* Shutting down. */
124 struct mlx5_vdpa_priv {
125 TAILQ_ENTRY(mlx5_vdpa_priv) next;
127 enum mlx5_dev_state state;
128 pthread_mutex_t vq_config_lock;
129 uint64_t no_traffic_counter;
132 int event_core; /* Event thread cpu affinity core. */
134 uint32_t timer_delay_us;
135 uint32_t no_traffic_max;
136 uint8_t hw_latency_mode; /* Hardware CQ moderation mode. */
137 uint16_t hw_max_latency_us; /* Hardware CQ moderation period in usec. */
138 uint16_t hw_max_pending_comp; /* Hardware CQ moderation counter. */
139 uint16_t queue_size; /* virtq depth for pre-creating virtq resource */
140 uint16_t queues; /* Max virtq pair for pre-creating virtq resource */
141 struct rte_vdpa_device *vdev; /* vDPA device. */
142 struct mlx5_common_device *cdev; /* Backend mlx5 device. */
143 int vid; /* vhost device id. */
144 struct mlx5_hca_vdpa_attr caps;
145 uint32_t gpa_mkey_index;
146 struct ibv_mr *null_mr;
147 struct rte_vhost_memory *vmem;
148 struct mlx5dv_devx_event_channel *eventc;
149 struct mlx5dv_devx_event_channel *err_chnl;
151 struct rte_intr_handle *err_intr_handle;
152 struct mlx5_devx_obj *td;
153 struct mlx5_devx_obj *tiss[16]; /* TIS list for each LAG port. */
155 uint8_t num_lag_ports;
156 uint64_t features; /* Negotiated features. */
157 uint16_t log_max_rqt_size;
158 struct mlx5_vdpa_steer steer;
159 struct mlx5dv_var *var;
161 struct mlx5_pmd_wrapped_mr lm_mr;
162 SLIST_HEAD(mr_list, mlx5_vdpa_query_mr) mr_list;
163 struct mlx5_vdpa_virtq virtqs[];
167 MLX5_VDPA_STATS_RECEIVED_DESCRIPTORS,
168 MLX5_VDPA_STATS_COMPLETED_DESCRIPTORS,
169 MLX5_VDPA_STATS_BAD_DESCRIPTOR_ERRORS,
170 MLX5_VDPA_STATS_EXCEED_MAX_CHAIN,
171 MLX5_VDPA_STATS_INVALID_BUFFER,
172 MLX5_VDPA_STATS_COMPLETION_ERRORS,
177 * Check whether virtq is for traffic receive.
178 * According to VIRTIO_NET Spec the virtqueues index identity its type by:
183 * 2(N-1)+1 transmitqN
186 static inline uint8_t
187 is_virtq_recvq(int virtq_index, int nr_vring)
189 if (virtq_index % 2 == 0 && virtq_index != nr_vring - 1)
195 * Release all the prepared memory regions and all their related resources.
198 * The vdpa driver private structure.
200 void mlx5_vdpa_mem_dereg(struct mlx5_vdpa_priv *priv);
203 * Register all the memory regions of the virtio device to the HW and allocate
204 * all their related resources.
207 * The vdpa driver private structure.
210 * 0 on success, a negative errno value otherwise and rte_errno is set.
212 int mlx5_vdpa_mem_register(struct mlx5_vdpa_priv *priv);
216 * Create an event QP and all its related resources.
219 * The vdpa driver private structure.
221 * Number of descriptors.
223 * The guest notification file descriptor.
225 * Pointer to the event QP structure.
228 * 0 on success, -1 otherwise and rte_errno is set.
230 int mlx5_vdpa_event_qp_prepare(struct mlx5_vdpa_priv *priv, uint16_t desc_n,
231 int callfd, struct mlx5_vdpa_event_qp *eqp);
234 * Destroy an event QP and all its related resources.
237 * Pointer to the event QP structure.
239 void mlx5_vdpa_event_qp_destroy(struct mlx5_vdpa_event_qp *eqp);
242 * Create all the event global resources.
245 * The vdpa driver private structure.
248 mlx5_vdpa_event_qp_global_prepare(struct mlx5_vdpa_priv *priv);
251 * Release all the event global resources.
254 * The vdpa driver private structure.
256 void mlx5_vdpa_event_qp_global_release(struct mlx5_vdpa_priv *priv);
262 * The vdpa driver private structure.
265 * 0 on success, a negative errno value otherwise and rte_errno is set.
267 int mlx5_vdpa_cqe_event_setup(struct mlx5_vdpa_priv *priv);
273 * The vdpa driver private structure.
275 void mlx5_vdpa_cqe_event_unset(struct mlx5_vdpa_priv *priv);
278 * Setup error interrupt handler.
281 * The vdpa driver private structure.
284 * 0 on success, a negative errno value otherwise and rte_errno is set.
286 int mlx5_vdpa_err_event_setup(struct mlx5_vdpa_priv *priv);
289 * Unset error event handler.
292 * The vdpa driver private structure.
294 void mlx5_vdpa_err_event_unset(struct mlx5_vdpa_priv *priv);
297 * Release virtqs and resources except that to be reused.
300 * The vdpa driver private structure.
302 void mlx5_vdpa_virtqs_release(struct mlx5_vdpa_priv *priv);
305 * Cleanup cached resources of all virtqs.
308 * The vdpa driver private structure.
310 void mlx5_vdpa_virtqs_cleanup(struct mlx5_vdpa_priv *priv);
313 * Create all the HW virtqs resources and all their related resources.
316 * The vdpa driver private structure.
319 * 0 on success, a negative errno value otherwise and rte_errno is set.
321 int mlx5_vdpa_virtqs_prepare(struct mlx5_vdpa_priv *priv);
324 * Enable\Disable virtq..
327 * The vdpa driver private structure.
331 * Set to enable, otherwise disable.
334 * 0 on success, a negative value otherwise.
336 int mlx5_vdpa_virtq_enable(struct mlx5_vdpa_priv *priv, int index, int enable);
339 * Unset steering - stop traffic.
342 * The vdpa driver private structure.
344 void mlx5_vdpa_steer_unset(struct mlx5_vdpa_priv *priv);
347 * Update steering according to the received queues status.
350 * The vdpa driver private structure.
353 * 0 on success, a negative value otherwise.
355 int mlx5_vdpa_steer_update(struct mlx5_vdpa_priv *priv);
358 * Setup steering and all its related resources to enable RSS traffic from the
359 * device to all the Rx host queues.
362 * The vdpa driver private structure.
365 * 0 on success, a negative value otherwise.
367 int mlx5_vdpa_steer_setup(struct mlx5_vdpa_priv *priv);
370 * Enable\Disable live migration logging.
373 * The vdpa driver private structure.
375 * Set for enable, unset for disable.
378 * 0 on success, a negative value otherwise.
380 int mlx5_vdpa_logging_enable(struct mlx5_vdpa_priv *priv, int enable);
383 * Set dirty bitmap logging to allow live migration.
386 * The vdpa driver private structure.
387 * @param[in] log_base
389 * @param[in] log_size
393 * 0 on success, a negative value otherwise.
395 int mlx5_vdpa_dirty_bitmap_set(struct mlx5_vdpa_priv *priv, uint64_t log_base,
399 * Log all virtqs information for live migration.
402 * The vdpa driver private structure.
404 * Set for enable, unset for disable.
407 * 0 on success, a negative value otherwise.
409 int mlx5_vdpa_lm_log(struct mlx5_vdpa_priv *priv);
412 * Modify virtq state to be ready or suspend.
415 * The vdpa driver private virtq structure.
417 * Set for ready, otherwise suspend.
420 * 0 on success, a negative value otherwise.
422 int mlx5_vdpa_virtq_modify(struct mlx5_vdpa_virtq *virtq, int state);
425 * Stop virtq before destroying it.
428 * The vdpa driver private structure.
433 * 0 on success, a negative value otherwise.
435 int mlx5_vdpa_virtq_stop(struct mlx5_vdpa_priv *priv, int index);
438 * Query virtq information.
441 * The vdpa driver private structure.
446 * 0 on success, a negative value otherwise.
448 int mlx5_vdpa_virtq_query(struct mlx5_vdpa_priv *priv, int index);
451 * Get virtq statistics.
454 * The vdpa driver private structure.
458 * The virtq statistics array to fill.
460 * The number of elements in @p stats array.
463 * A negative value on error, otherwise the number of entries filled in the
467 mlx5_vdpa_virtq_stats_get(struct mlx5_vdpa_priv *priv, int qid,
468 struct rte_vdpa_stat *stats, unsigned int n);
471 * Reset virtq statistics.
474 * The vdpa driver private structure.
479 * A negative value on error, otherwise 0.
482 mlx5_vdpa_virtq_stats_reset(struct mlx5_vdpa_priv *priv, int qid);
485 * Drain virtq CQ CQE.
488 * The vdpa driver private structure.
491 mlx5_vdpa_drain_cq(struct mlx5_vdpa_priv *priv);
492 #endif /* RTE_PMD_MLX5_VDPA_H_ */