1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
2 /* Copyright (c) 2020 Mellanox Technologies Ltd. */
4 #ifndef __MLX5_VDPA_H__
5 #define __MLX5_VDPA_H__
7 #include <linux/etherdevice.h>
8 #include <linux/vringh.h>
9 #include <linux/vdpa.h>
10 #include <linux/mlx5/driver.h>
12 #define MLX5V_ETH_HARD_MTU (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN)
14 struct mlx5_vdpa_direct_mr {
19 struct sg_table sg_head;
23 struct list_head list;
30 /* list of direct MRs descendants of this indirect mr */
31 struct list_head head;
32 unsigned long num_directs;
33 unsigned long num_klms;
35 struct vhost_iotlb *iotlb;
40 struct list_head mr_list;
43 struct mlx5_vdpa_resources {
45 struct mlx5_uars_page *uar;
46 void __iomem *kick_addr;
53 struct mlx5_control_vq {
54 struct vhost_iotlb *iotlb;
55 /* spinlock to synchronize iommu table */
56 spinlock_t iommu_lock;
62 struct vdpa_callback event_cb;
63 struct vringh_kiov riov;
64 struct vringh_kiov wiov;
66 unsigned int received_desc;
67 unsigned int completed_desc;
70 struct mlx5_vdpa_wq_ent {
71 struct work_struct work;
72 struct mlx5_vdpa_dev *mvdev;
76 MLX5_VDPA_DATAVQ_GROUP,
78 MLX5_VDPA_DATAVQ_DESC_GROUP,
79 MLX5_VDPA_NUMVQ_GROUPS
86 struct mlx5_vdpa_dev {
87 struct vdpa_device vdev;
88 struct mlx5_core_dev *mdev;
89 struct mlx5_vdpa_resources res;
98 struct mlx5_vdpa_mr *mr[MLX5_VDPA_NUM_AS];
99 struct list_head mr_list_head;
100 /* serialize mr access */
102 struct mlx5_control_vq cvq;
103 struct workqueue_struct *wq;
104 unsigned int group2asid[MLX5_VDPA_NUMVQ_GROUPS];
108 int mlx5_vdpa_create_tis(struct mlx5_vdpa_dev *mvdev, void *in, u32 *tisn);
109 void mlx5_vdpa_destroy_tis(struct mlx5_vdpa_dev *mvdev, u32 tisn);
110 int mlx5_vdpa_create_rqt(struct mlx5_vdpa_dev *mvdev, void *in, int inlen, u32 *rqtn);
111 int mlx5_vdpa_modify_rqt(struct mlx5_vdpa_dev *mvdev, void *in, int inlen, u32 rqtn);
112 void mlx5_vdpa_destroy_rqt(struct mlx5_vdpa_dev *mvdev, u32 rqtn);
113 int mlx5_vdpa_create_tir(struct mlx5_vdpa_dev *mvdev, void *in, u32 *tirn);
114 void mlx5_vdpa_destroy_tir(struct mlx5_vdpa_dev *mvdev, u32 tirn);
115 int mlx5_vdpa_alloc_transport_domain(struct mlx5_vdpa_dev *mvdev, u32 *tdn);
116 void mlx5_vdpa_dealloc_transport_domain(struct mlx5_vdpa_dev *mvdev, u32 tdn);
117 int mlx5_vdpa_alloc_resources(struct mlx5_vdpa_dev *mvdev);
118 void mlx5_vdpa_free_resources(struct mlx5_vdpa_dev *mvdev);
119 int mlx5_vdpa_create_mkey(struct mlx5_vdpa_dev *mvdev, u32 *mkey, u32 *in,
121 int mlx5_vdpa_destroy_mkey(struct mlx5_vdpa_dev *mvdev, u32 mkey);
122 struct mlx5_vdpa_mr *mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev,
123 struct vhost_iotlb *iotlb);
124 void mlx5_vdpa_destroy_mr_resources(struct mlx5_vdpa_dev *mvdev);
125 void mlx5_vdpa_get_mr(struct mlx5_vdpa_dev *mvdev,
126 struct mlx5_vdpa_mr *mr);
127 void mlx5_vdpa_put_mr(struct mlx5_vdpa_dev *mvdev,
128 struct mlx5_vdpa_mr *mr);
129 void mlx5_vdpa_update_mr(struct mlx5_vdpa_dev *mvdev,
130 struct mlx5_vdpa_mr *mr,
132 int mlx5_vdpa_update_cvq_iotlb(struct mlx5_vdpa_dev *mvdev,
133 struct vhost_iotlb *iotlb,
135 int mlx5_vdpa_create_dma_mr(struct mlx5_vdpa_dev *mvdev);
136 int mlx5_vdpa_reset_mr(struct mlx5_vdpa_dev *mvdev, unsigned int asid);
138 #define mlx5_vdpa_warn(__dev, format, ...) \
139 dev_warn((__dev)->mdev->device, "%s:%d:(pid %d) warning: " format, __func__, __LINE__, \
140 current->pid, ##__VA_ARGS__)
142 #define mlx5_vdpa_info(__dev, format, ...) \
143 dev_info((__dev)->mdev->device, "%s:%d:(pid %d): " format, __func__, __LINE__, \
144 current->pid, ##__VA_ARGS__)
146 #define mlx5_vdpa_dbg(__dev, format, ...) \
147 dev_debug((__dev)->mdev->device, "%s:%d:(pid %d): " format, __func__, __LINE__, \
148 current->pid, ##__VA_ARGS__)
150 #endif /* __MLX5_VDPA_H__ */