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 <rte_vdpa_dev.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_obj *sw_qp;
58 struct mlx5dv_devx_umem *umem_obj;
60 volatile uint32_t *db_rec;
63 struct mlx5_vdpa_query_mr {
64 SLIST_ENTRY(mlx5_vdpa_query_mr) next;
67 struct mlx5dv_devx_umem *umem;
68 struct mlx5_devx_obj *mkey;
73 MLX5_VDPA_NOTIFIER_STATE_DISABLED,
74 MLX5_VDPA_NOTIFIER_STATE_ENABLED,
75 MLX5_VDPA_NOTIFIER_STATE_ERR
78 struct mlx5_vdpa_virtq {
79 SLIST_ENTRY(mlx5_vdpa_virtq) next;
83 uint8_t notifier_state;
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 reset;
101 struct mlx5_vdpa_steer {
102 struct mlx5_devx_obj *rqt;
106 struct mlx5dv_flow_matcher *matcher;
107 struct mlx5_devx_obj *tir;
114 MLX5_VDPA_EVENT_MODE_DYNAMIC_TIMER,
115 MLX5_VDPA_EVENT_MODE_FIXED_TIMER,
116 MLX5_VDPA_EVENT_MODE_ONLY_INTERRUPT
119 struct mlx5_vdpa_priv {
120 TAILQ_ENTRY(mlx5_vdpa_priv) next;
122 pthread_mutex_t vq_config_lock;
123 uint64_t last_traffic_tic;
125 pthread_mutex_t timer_lock;
126 pthread_cond_t timer_cond;
127 volatile uint8_t timer_on;
129 int event_core; /* Event thread cpu affinity core. */
131 uint32_t timer_delay_us;
132 uint32_t no_traffic_time_s;
133 uint8_t hw_latency_mode; /* Hardware CQ moderation mode. */
134 uint16_t hw_max_latency_us; /* Hardware CQ moderation period in usec. */
135 uint16_t hw_max_pending_comp; /* Hardware CQ moderation counter. */
136 struct rte_vdpa_device *vdev; /* vDPA device. */
137 int vid; /* vhost device id. */
138 struct ibv_context *ctx; /* Device context. */
139 struct rte_pci_device *pci_dev;
140 struct mlx5_hca_vdpa_attr caps;
141 uint32_t pdn; /* Protection Domain number. */
143 uint32_t gpa_mkey_index;
144 struct ibv_mr *null_mr;
145 struct rte_vhost_memory *vmem;
146 struct mlx5dv_devx_event_channel *eventc;
147 struct mlx5dv_devx_event_channel *err_chnl;
148 struct mlx5dv_devx_uar *uar;
149 struct rte_intr_handle intr_handle;
150 struct rte_intr_handle err_intr_handle;
151 struct mlx5_devx_obj *td;
152 struct mlx5_devx_obj *tiss[16]; /* TIS list for each LAG port. */
154 uint8_t num_lag_ports;
155 uint64_t features; /* Negotiated features. */
156 uint16_t log_max_rqt_size;
157 struct mlx5_vdpa_steer steer;
158 struct mlx5dv_var *var;
160 SLIST_HEAD(mr_list, mlx5_vdpa_query_mr) mr_list;
161 struct mlx5_vdpa_virtq virtqs[];
165 MLX5_VDPA_STATS_RECEIVED_DESCRIPTORS,
166 MLX5_VDPA_STATS_COMPLETED_DESCRIPTORS,
167 MLX5_VDPA_STATS_BAD_DESCRIPTOR_ERRORS,
168 MLX5_VDPA_STATS_EXCEED_MAX_CHAIN,
169 MLX5_VDPA_STATS_INVALID_BUFFER,
170 MLX5_VDPA_STATS_COMPLETION_ERRORS,
175 * Check whether virtq is for traffic receive.
176 * According to VIRTIO_NET Spec the virtqueues index identity its type by:
181 * 2(N-1)+1 transmitqN
184 static inline uint8_t
185 is_virtq_recvq(int virtq_index, int nr_vring)
187 if (virtq_index % 2 == 0 && virtq_index != nr_vring - 1)
193 * Release all the prepared memory regions and all their related resources.
196 * The vdpa driver private structure.
198 void mlx5_vdpa_mem_dereg(struct mlx5_vdpa_priv *priv);
201 * Register all the memory regions of the virtio device to the HW and allocate
202 * all their related resources.
205 * The vdpa driver private structure.
208 * 0 on success, a negative errno value otherwise and rte_errno is set.
210 int mlx5_vdpa_mem_register(struct mlx5_vdpa_priv *priv);
214 * Create an event QP and all its related resources.
217 * The vdpa driver private structure.
219 * Number of descriptors.
221 * The guest notification file descriptor.
223 * Pointer to the event QP structure.
226 * 0 on success, -1 otherwise and rte_errno is set.
228 int mlx5_vdpa_event_qp_create(struct mlx5_vdpa_priv *priv, uint16_t desc_n,
229 int callfd, struct mlx5_vdpa_event_qp *eqp);
232 * Destroy an event QP and all its related resources.
235 * Pointer to the event QP structure.
237 void mlx5_vdpa_event_qp_destroy(struct mlx5_vdpa_event_qp *eqp);
240 * Release all the event global resources.
243 * The vdpa driver private structure.
245 void mlx5_vdpa_event_qp_global_release(struct mlx5_vdpa_priv *priv);
251 * The vdpa driver private structure.
254 * 0 on success, a negative errno value otherwise and rte_errno is set.
256 int mlx5_vdpa_cqe_event_setup(struct mlx5_vdpa_priv *priv);
262 * The vdpa driver private structure.
264 void mlx5_vdpa_cqe_event_unset(struct mlx5_vdpa_priv *priv);
267 * Setup error interrupt handler.
270 * The vdpa driver private structure.
273 * 0 on success, a negative errno value otherwise and rte_errno is set.
275 int mlx5_vdpa_err_event_setup(struct mlx5_vdpa_priv *priv);
278 * Unset error event handler.
281 * The vdpa driver private structure.
283 void mlx5_vdpa_err_event_unset(struct mlx5_vdpa_priv *priv);
286 * Release a virtq and all its related resources.
289 * The vdpa driver private structure.
291 void mlx5_vdpa_virtqs_release(struct mlx5_vdpa_priv *priv);
294 * Create all the HW virtqs resources and all their related resources.
297 * The vdpa driver private structure.
300 * 0 on success, a negative errno value otherwise and rte_errno is set.
302 int mlx5_vdpa_virtqs_prepare(struct mlx5_vdpa_priv *priv);
305 * Enable\Disable virtq..
308 * The vdpa driver private structure.
312 * Set to enable, otherwise disable.
315 * 0 on success, a negative value otherwise.
317 int mlx5_vdpa_virtq_enable(struct mlx5_vdpa_priv *priv, int index, int enable);
320 * Unset steering and release all its related resources- stop traffic.
323 * The vdpa driver private structure.
325 void mlx5_vdpa_steer_unset(struct mlx5_vdpa_priv *priv);
328 * Update steering according to the received queues status.
331 * The vdpa driver private structure.
334 * 0 on success, a negative value otherwise.
336 int mlx5_vdpa_steer_update(struct mlx5_vdpa_priv *priv);
339 * Setup steering and all its related resources to enable RSS traffic from the
340 * device to all the Rx host queues.
343 * The vdpa driver private structure.
346 * 0 on success, a negative value otherwise.
348 int mlx5_vdpa_steer_setup(struct mlx5_vdpa_priv *priv);
351 * Enable\Disable live migration logging.
354 * The vdpa driver private structure.
356 * Set for enable, unset for disable.
359 * 0 on success, a negative value otherwise.
361 int mlx5_vdpa_logging_enable(struct mlx5_vdpa_priv *priv, int enable);
364 * Set dirty bitmap logging to allow live migration.
367 * The vdpa driver private structure.
368 * @param[in] log_base
370 * @param[in] log_size
374 * 0 on success, a negative value otherwise.
376 int mlx5_vdpa_dirty_bitmap_set(struct mlx5_vdpa_priv *priv, uint64_t log_base,
380 * Log all virtqs information for live migration.
383 * The vdpa driver private structure.
385 * Set for enable, unset for disable.
388 * 0 on success, a negative value otherwise.
390 int mlx5_vdpa_lm_log(struct mlx5_vdpa_priv *priv);
393 * Modify virtq state to be ready or suspend.
396 * The vdpa driver private virtq structure.
398 * Set for ready, otherwise suspend.
401 * 0 on success, a negative value otherwise.
403 int mlx5_vdpa_virtq_modify(struct mlx5_vdpa_virtq *virtq, int state);
406 * Stop virtq before destroying it.
409 * The vdpa driver private structure.
414 * 0 on success, a negative value otherwise.
416 int mlx5_vdpa_virtq_stop(struct mlx5_vdpa_priv *priv, int index);
419 * Query virtq information.
422 * The vdpa driver private structure.
427 * 0 on success, a negative value otherwise.
429 int mlx5_vdpa_virtq_query(struct mlx5_vdpa_priv *priv, int index);
432 * Get virtq statistics.
435 * The vdpa driver private structure.
439 * The virtq statistics array to fill.
441 * The number of elements in @p stats array.
444 * A negative value on error, otherwise the number of entries filled in the
448 mlx5_vdpa_virtq_stats_get(struct mlx5_vdpa_priv *priv, int qid,
449 struct rte_vdpa_stat *stats, unsigned int n);
452 * Reset virtq statistics.
455 * The vdpa driver private structure.
460 * A negative value on error, otherwise 0.
463 mlx5_vdpa_virtq_stats_reset(struct mlx5_vdpa_priv *priv, int qid);
464 #endif /* RTE_PMD_MLX5_VDPA_H_ */