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>
28 #define MLX5_VDPA_INTR_RETRIES 256
29 #define MLX5_VDPA_INTR_RETRIES_USEC 1000
31 #ifndef VIRTIO_F_ORDER_PLATFORM
32 #define VIRTIO_F_ORDER_PLATFORM 36
35 #ifndef VIRTIO_F_RING_PACKED
36 #define VIRTIO_F_RING_PACKED 34
46 struct mlx5_devx_obj *cq;
47 struct mlx5dv_devx_umem *umem_obj;
49 volatile void *umem_buf;
50 volatile struct mlx5_cqe *cqes;
52 volatile uint32_t *db_rec;
56 struct mlx5_vdpa_event_qp {
57 struct mlx5_vdpa_cq cq;
58 struct mlx5_devx_obj *fw_qp;
59 struct mlx5_devx_obj *sw_qp;
60 struct mlx5dv_devx_umem *umem_obj;
62 volatile uint32_t *db_rec;
65 struct mlx5_vdpa_query_mr {
66 SLIST_ENTRY(mlx5_vdpa_query_mr) next;
69 struct mlx5dv_devx_umem *umem;
70 struct mlx5_devx_obj *mkey;
74 struct mlx5_vdpa_virtq {
75 SLIST_ENTRY(mlx5_vdpa_virtq) next;
79 struct mlx5_vdpa_priv *priv;
80 struct mlx5_devx_obj *virtq;
81 struct mlx5_devx_obj *counters;
82 struct mlx5_vdpa_event_qp eqp;
84 struct mlx5dv_devx_umem *obj;
88 struct rte_intr_handle intr_handle;
89 struct mlx5_devx_virtio_q_couners_attr reset;
92 struct mlx5_vdpa_steer {
93 struct mlx5_devx_obj *rqt;
97 struct mlx5dv_flow_matcher *matcher;
98 struct mlx5_devx_obj *tir;
104 struct mlx5_vdpa_priv {
105 TAILQ_ENTRY(mlx5_vdpa_priv) next;
107 uint8_t direct_notifier; /* Whether direct notifier is on or off. */
108 uint64_t last_traffic_tic;
110 pthread_mutex_t timer_lock;
111 pthread_cond_t timer_cond;
112 volatile uint8_t timer_on;
113 uint32_t timer_delay_us;
114 struct rte_vdpa_device *vdev; /* vDPA device. */
115 int vid; /* vhost device id. */
116 struct ibv_context *ctx; /* Device context. */
117 struct rte_pci_device *pci_dev;
118 struct mlx5_hca_vdpa_attr caps;
119 uint32_t pdn; /* Protection Domain number. */
121 uint32_t gpa_mkey_index;
122 struct ibv_mr *null_mr;
123 struct rte_vhost_memory *vmem;
125 struct mlx5dv_devx_event_channel *eventc;
126 struct mlx5dv_devx_uar *uar;
127 struct rte_intr_handle intr_handle;
128 struct mlx5_devx_obj *td;
129 struct mlx5_devx_obj *tis;
131 uint64_t features; /* Negotiated features. */
132 uint16_t log_max_rqt_size;
133 struct mlx5_vdpa_steer steer;
134 struct mlx5dv_var *var;
136 SLIST_HEAD(mr_list, mlx5_vdpa_query_mr) mr_list;
137 struct mlx5_vdpa_virtq virtqs[];
141 MLX5_VDPA_STATS_RECEIVED_DESCRIPTORS,
142 MLX5_VDPA_STATS_COMPLETED_DESCRIPTORS,
143 MLX5_VDPA_STATS_BAD_DESCRIPTOR_ERRORS,
144 MLX5_VDPA_STATS_EXCEED_MAX_CHAIN,
145 MLX5_VDPA_STATS_INVALID_BUFFER,
146 MLX5_VDPA_STATS_COMPLETION_ERRORS,
151 * Check whether virtq is for traffic receive.
152 * According to VIRTIO_NET Spec the virtqueues index identity its type by:
157 * 2(N-1)+1 transmitqN
160 static inline uint8_t
161 is_virtq_recvq(int virtq_index, int nr_vring)
163 if (virtq_index % 2 == 0 && virtq_index != nr_vring - 1)
169 * Release all the prepared memory regions and all their related resources.
172 * The vdpa driver private structure.
174 void mlx5_vdpa_mem_dereg(struct mlx5_vdpa_priv *priv);
177 * Register all the memory regions of the virtio device to the HW and allocate
178 * all their related resources.
181 * The vdpa driver private structure.
184 * 0 on success, a negative errno value otherwise and rte_errno is set.
186 int mlx5_vdpa_mem_register(struct mlx5_vdpa_priv *priv);
190 * Create an event QP and all its related resources.
193 * The vdpa driver private structure.
195 * Number of descriptors.
197 * The guest notification file descriptor.
199 * Pointer to the event QP structure.
202 * 0 on success, -1 otherwise and rte_errno is set.
204 int mlx5_vdpa_event_qp_create(struct mlx5_vdpa_priv *priv, uint16_t desc_n,
205 int callfd, struct mlx5_vdpa_event_qp *eqp);
208 * Destroy an event QP and all its related resources.
211 * Pointer to the event QP structure.
213 void mlx5_vdpa_event_qp_destroy(struct mlx5_vdpa_event_qp *eqp);
216 * Release all the event global resources.
219 * The vdpa driver private structure.
221 void mlx5_vdpa_event_qp_global_release(struct mlx5_vdpa_priv *priv);
227 * The vdpa driver private structure.
230 * 0 on success, a negative errno value otherwise and rte_errno is set.
232 int mlx5_vdpa_cqe_event_setup(struct mlx5_vdpa_priv *priv);
238 * The vdpa driver private structure.
240 void mlx5_vdpa_cqe_event_unset(struct mlx5_vdpa_priv *priv);
243 * Release a virtq and all its related resources.
246 * The vdpa driver private structure.
248 void mlx5_vdpa_virtqs_release(struct mlx5_vdpa_priv *priv);
251 * Create all the HW virtqs resources and all their related resources.
254 * The vdpa driver private structure.
257 * 0 on success, a negative errno value otherwise and rte_errno is set.
259 int mlx5_vdpa_virtqs_prepare(struct mlx5_vdpa_priv *priv);
262 * Enable\Disable virtq..
265 * The vdpa driver private structure.
269 * Set to enable, otherwise disable.
272 * 0 on success, a negative value otherwise.
274 int mlx5_vdpa_virtq_enable(struct mlx5_vdpa_priv *priv, int index, int enable);
277 * Unset steering and release all its related resources- stop traffic.
280 * The vdpa driver private structure.
282 void mlx5_vdpa_steer_unset(struct mlx5_vdpa_priv *priv);
285 * Update steering according to the received queues status.
288 * The vdpa driver private structure.
291 * 0 on success, a negative value otherwise.
293 int mlx5_vdpa_steer_update(struct mlx5_vdpa_priv *priv);
296 * Setup steering and all its related resources to enable RSS traffic from the
297 * device to all the Rx host queues.
300 * The vdpa driver private structure.
303 * 0 on success, a negative value otherwise.
305 int mlx5_vdpa_steer_setup(struct mlx5_vdpa_priv *priv);
308 * Enable\Disable live migration logging.
311 * The vdpa driver private structure.
313 * Set for enable, unset for disable.
316 * 0 on success, a negative value otherwise.
318 int mlx5_vdpa_logging_enable(struct mlx5_vdpa_priv *priv, int enable);
321 * Set dirty bitmap logging to allow live migration.
324 * The vdpa driver private structure.
325 * @param[in] log_base
327 * @param[in] log_size
331 * 0 on success, a negative value otherwise.
333 int mlx5_vdpa_dirty_bitmap_set(struct mlx5_vdpa_priv *priv, uint64_t log_base,
337 * Log all virtqs information for live migration.
340 * The vdpa driver private structure.
342 * Set for enable, unset for disable.
345 * 0 on success, a negative value otherwise.
347 int mlx5_vdpa_lm_log(struct mlx5_vdpa_priv *priv);
350 * Modify virtq state to be ready or suspend.
353 * The vdpa driver private virtq structure.
355 * Set for ready, otherwise suspend.
358 * 0 on success, a negative value otherwise.
360 int mlx5_vdpa_virtq_modify(struct mlx5_vdpa_virtq *virtq, int state);
363 * Stop virtq before destroying it.
366 * The vdpa driver private structure.
371 * 0 on success, a negative value otherwise.
373 int mlx5_vdpa_virtq_stop(struct mlx5_vdpa_priv *priv, int index);
376 * Get virtq statistics.
379 * The vdpa driver private structure.
383 * The virtq statistics array to fill.
385 * The number of elements in @p stats array.
388 * A negative value on error, otherwise the number of entries filled in the
392 mlx5_vdpa_virtq_stats_get(struct mlx5_vdpa_priv *priv, int qid,
393 struct rte_vdpa_stat *stats, unsigned int n);
396 * Reset virtq statistics.
399 * The vdpa driver private structure.
404 * A negative value on error, otherwise 0.
407 mlx5_vdpa_virtq_stats_reset(struct mlx5_vdpa_priv *priv, int qid);
408 #endif /* RTE_PMD_MLX5_VDPA_H_ */