1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ 2 /* Copyright (c) 2020 Mellanox Technologies Ltd. */ 3 4 #ifndef __MLX5_VDPA_H__ 5 #define __MLX5_VDPA_H__ 6 7 #include <linux/vdpa.h> 8 #include <linux/mlx5/driver.h> 9 10 struct mlx5_vdpa_direct_mr { 11 u64 start; 12 u64 end; 13 u32 perm; 14 struct mlx5_core_mkey mr; 15 struct sg_table sg_head; 16 int log_size; 17 int nsg; 18 struct list_head list; 19 u64 offset; 20 }; 21 22 struct mlx5_vdpa_mr { 23 struct mlx5_core_mkey mkey; 24 25 /* list of direct MRs descendants of this indirect mr */ 26 struct list_head head; 27 unsigned long num_directs; 28 unsigned long num_klms; 29 bool initialized; 30 31 /* serialize mkey creation and destruction */ 32 struct mutex mkey_mtx; 33 }; 34 35 struct mlx5_vdpa_resources { 36 u32 pdn; 37 struct mlx5_uars_page *uar; 38 void __iomem *kick_addr; 39 u16 uid; 40 u32 null_mkey; 41 bool valid; 42 }; 43 44 struct mlx5_vdpa_dev { 45 struct vdpa_device vdev; 46 struct mlx5_core_dev *mdev; 47 struct mlx5_vdpa_resources res; 48 49 u64 mlx_features; 50 u64 actual_features; 51 u8 status; 52 u32 max_vqs; 53 u32 generation; 54 55 struct mlx5_vdpa_mr mr; 56 }; 57 58 int mlx5_vdpa_alloc_pd(struct mlx5_vdpa_dev *dev, u32 *pdn, u16 uid); 59 int mlx5_vdpa_dealloc_pd(struct mlx5_vdpa_dev *dev, u32 pdn, u16 uid); 60 int mlx5_vdpa_get_null_mkey(struct mlx5_vdpa_dev *dev, u32 *null_mkey); 61 int mlx5_vdpa_create_tis(struct mlx5_vdpa_dev *mvdev, void *in, u32 *tisn); 62 void mlx5_vdpa_destroy_tis(struct mlx5_vdpa_dev *mvdev, u32 tisn); 63 int mlx5_vdpa_create_rqt(struct mlx5_vdpa_dev *mvdev, void *in, int inlen, u32 *rqtn); 64 void mlx5_vdpa_destroy_rqt(struct mlx5_vdpa_dev *mvdev, u32 rqtn); 65 int mlx5_vdpa_create_tir(struct mlx5_vdpa_dev *mvdev, void *in, u32 *tirn); 66 void mlx5_vdpa_destroy_tir(struct mlx5_vdpa_dev *mvdev, u32 tirn); 67 int mlx5_vdpa_alloc_transport_domain(struct mlx5_vdpa_dev *mvdev, u32 *tdn); 68 void mlx5_vdpa_dealloc_transport_domain(struct mlx5_vdpa_dev *mvdev, u32 tdn); 69 int mlx5_vdpa_alloc_resources(struct mlx5_vdpa_dev *mvdev); 70 void mlx5_vdpa_free_resources(struct mlx5_vdpa_dev *mvdev); 71 int mlx5_vdpa_create_mkey(struct mlx5_vdpa_dev *mvdev, struct mlx5_core_mkey *mkey, u32 *in, 72 int inlen); 73 int mlx5_vdpa_destroy_mkey(struct mlx5_vdpa_dev *mvdev, struct mlx5_core_mkey *mkey); 74 int mlx5_vdpa_handle_set_map(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb, 75 bool *change_map); 76 int mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb); 77 void mlx5_vdpa_destroy_mr(struct mlx5_vdpa_dev *mvdev); 78 79 #define mlx5_vdpa_warn(__dev, format, ...) \ 80 dev_warn((__dev)->mdev->device, "%s:%d:(pid %d) warning: " format, __func__, __LINE__, \ 81 current->pid, ##__VA_ARGS__) 82 83 #define mlx5_vdpa_info(__dev, format, ...) \ 84 dev_info((__dev)->mdev->device, "%s:%d:(pid %d): " format, __func__, __LINE__, \ 85 current->pid, ##__VA_ARGS__) 86 87 #define mlx5_vdpa_dbg(__dev, format, ...) \ 88 dev_debug((__dev)->mdev->device, "%s:%d:(pid %d): " format, __func__, __LINE__, \ 89 current->pid, ##__VA_ARGS__) 90 91 #endif /* __MLX5_VDPA_H__ */ 92