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_vhost.h>
17 #pragma GCC diagnostic error "-Wpedantic"
19 #include <rte_spinlock.h>
20 #include <rte_interrupts.h>
22 #include <mlx5_glue.h>
23 #include <mlx5_devx_cmds.h>
27 #define MLX5_VDPA_INTR_RETRIES 256
28 #define MLX5_VDPA_INTR_RETRIES_USEC 1000
30 #ifndef VIRTIO_F_ORDER_PLATFORM
31 #define VIRTIO_F_ORDER_PLATFORM 36
34 #ifndef VIRTIO_F_RING_PACKED
35 #define VIRTIO_F_RING_PACKED 34
43 struct mlx5_devx_obj *cq;
44 struct mlx5dv_devx_umem *umem_obj;
46 volatile void *umem_buf;
47 volatile struct mlx5_cqe *cqes;
49 volatile uint32_t *db_rec;
53 struct mlx5_vdpa_event_qp {
54 struct mlx5_vdpa_cq cq;
55 struct mlx5_devx_obj *fw_qp;
56 struct mlx5_devx_obj *sw_qp;
57 struct mlx5dv_devx_umem *umem_obj;
59 volatile uint32_t *db_rec;
62 struct mlx5_vdpa_query_mr {
63 SLIST_ENTRY(mlx5_vdpa_query_mr) next;
66 struct mlx5dv_devx_umem *umem;
67 struct mlx5_devx_obj *mkey;
71 struct mlx5_vdpa_virtq {
72 SLIST_ENTRY(mlx5_vdpa_virtq) next;
76 struct mlx5_vdpa_priv *priv;
77 struct mlx5_devx_obj *virtq;
78 struct mlx5_vdpa_event_qp eqp;
80 struct mlx5dv_devx_umem *obj;
84 struct rte_intr_handle intr_handle;
87 struct mlx5_vdpa_steer {
88 struct mlx5_devx_obj *rqt;
92 struct mlx5dv_flow_matcher *matcher;
93 struct mlx5_devx_obj *tir;
99 struct mlx5_vdpa_priv {
100 TAILQ_ENTRY(mlx5_vdpa_priv) next;
102 int id; /* vDPA device id. */
103 int vid; /* vhost device id. */
104 struct ibv_context *ctx; /* Device context. */
105 struct rte_vdpa_dev_addr dev_addr;
106 struct mlx5_hca_vdpa_attr caps;
107 uint32_t pdn; /* Protection Domain number. */
109 uint32_t gpa_mkey_index;
110 struct ibv_mr *null_mr;
111 struct rte_vhost_memory *vmem;
113 struct mlx5dv_devx_event_channel *eventc;
114 struct mlx5dv_devx_uar *uar;
115 struct rte_intr_handle intr_handle;
116 struct mlx5_devx_obj *td;
117 struct mlx5_devx_obj *tis;
119 uint64_t features; /* Negotiated features. */
120 uint16_t log_max_rqt_size;
121 SLIST_HEAD(virtq_list, mlx5_vdpa_virtq) virtq_list;
122 struct mlx5_vdpa_steer steer;
123 struct mlx5dv_var *var;
125 SLIST_HEAD(mr_list, mlx5_vdpa_query_mr) mr_list;
129 * Release all the prepared memory regions and all their related resources.
132 * The vdpa driver private structure.
134 void mlx5_vdpa_mem_dereg(struct mlx5_vdpa_priv *priv);
137 * Register all the memory regions of the virtio device to the HW and allocate
138 * all their related resources.
141 * The vdpa driver private structure.
144 * 0 on success, a negative errno value otherwise and rte_errno is set.
146 int mlx5_vdpa_mem_register(struct mlx5_vdpa_priv *priv);
150 * Create an event QP and all its related resources.
153 * The vdpa driver private structure.
155 * Number of descriptors.
157 * The guest notification file descriptor.
159 * Pointer to the event QP structure.
162 * 0 on success, -1 otherwise and rte_errno is set.
164 int mlx5_vdpa_event_qp_create(struct mlx5_vdpa_priv *priv, uint16_t desc_n,
165 int callfd, struct mlx5_vdpa_event_qp *eqp);
168 * Destroy an event QP and all its related resources.
171 * Pointer to the event QP structure.
173 void mlx5_vdpa_event_qp_destroy(struct mlx5_vdpa_event_qp *eqp);
176 * Release all the event global resources.
179 * The vdpa driver private structure.
181 void mlx5_vdpa_event_qp_global_release(struct mlx5_vdpa_priv *priv);
187 * The vdpa driver private structure.
190 * 0 on success, a negative errno value otherwise and rte_errno is set.
192 int mlx5_vdpa_cqe_event_setup(struct mlx5_vdpa_priv *priv);
198 * The vdpa driver private structure.
200 void mlx5_vdpa_cqe_event_unset(struct mlx5_vdpa_priv *priv);
203 * Release a virtq and all its related resources.
206 * The vdpa driver private structure.
208 void mlx5_vdpa_virtqs_release(struct mlx5_vdpa_priv *priv);
211 * Create all the HW virtqs resources and all their related resources.
214 * The vdpa driver private structure.
217 * 0 on success, a negative errno value otherwise and rte_errno is set.
219 int mlx5_vdpa_virtqs_prepare(struct mlx5_vdpa_priv *priv);
222 * Enable\Disable virtq..
225 * The vdpa driver private virtq structure.
227 * Set to enable, otherwise disable.
230 * 0 on success, a negative value otherwise.
232 int mlx5_vdpa_virtq_enable(struct mlx5_vdpa_virtq *virtq, int enable);
235 * Unset steering and release all its related resources- stop traffic.
238 * The vdpa driver private structure.
240 int mlx5_vdpa_steer_unset(struct mlx5_vdpa_priv *priv);
243 * Setup steering and all its related resources to enable RSS traffic from the
244 * device to all the Rx host queues.
247 * The vdpa driver private structure.
250 * 0 on success, a negative value otherwise.
252 int mlx5_vdpa_steer_setup(struct mlx5_vdpa_priv *priv);
255 * Enable\Disable live migration logging.
258 * The vdpa driver private structure.
260 * Set for enable, unset for disable.
263 * 0 on success, a negative value otherwise.
265 int mlx5_vdpa_logging_enable(struct mlx5_vdpa_priv *priv, int enable);
268 * Set dirty bitmap logging to allow live migration.
271 * The vdpa driver private structure.
272 * @param[in] log_base
274 * @param[in] log_size
278 * 0 on success, a negative value otherwise.
280 int mlx5_vdpa_dirty_bitmap_set(struct mlx5_vdpa_priv *priv, uint64_t log_base,
284 * Log all virtqs information for live migration.
287 * The vdpa driver private structure.
289 * Set for enable, unset for disable.
292 * 0 on success, a negative value otherwise.
294 int mlx5_vdpa_lm_log(struct mlx5_vdpa_priv *priv);
297 * Modify virtq state to be ready or suspend.
300 * The vdpa driver private virtq structure.
302 * Set for ready, otherwise suspend.
305 * 0 on success, a negative value otherwise.
307 int mlx5_vdpa_virtq_modify(struct mlx5_vdpa_virtq *virtq, int state);
309 #endif /* RTE_PMD_MLX5_VDPA_H_ */