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 int nent; 19 struct list_head list; 20 u64 offset; 21 }; 22 23 struct mlx5_vdpa_mr { 24 struct mlx5_core_mkey mkey; 25 26 /* list of direct MRs descendants of this indirect mr */ 27 struct list_head head; 28 unsigned long num_directs; 29 unsigned long num_klms; 30 bool initialized; 31 32 /* serialize mkey creation and destruction */ 33 struct mutex mkey_mtx; 34 }; 35 36 struct mlx5_vdpa_resources { 37 u32 pdn; 38 struct mlx5_uars_page *uar; 39 void __iomem *kick_addr; 40 u16 uid; 41 u32 null_mkey; 42 bool valid; 43 }; 44 45 struct mlx5_vdpa_dev { 46 struct vdpa_device vdev; 47 struct mlx5_core_dev *mdev; 48 struct mlx5_vdpa_resources res; 49 50 u64 mlx_features; 51 u64 actual_features; 52 u8 status; 53 u32 max_vqs; 54 u32 generation; 55 56 struct mlx5_vdpa_mr mr; 57 }; 58 59 int mlx5_vdpa_alloc_pd(struct mlx5_vdpa_dev *dev, u32 *pdn, u16 uid); 60 int mlx5_vdpa_dealloc_pd(struct mlx5_vdpa_dev *dev, u32 pdn, u16 uid); 61 int mlx5_vdpa_get_null_mkey(struct mlx5_vdpa_dev *dev, u32 *null_mkey); 62 int mlx5_vdpa_create_tis(struct mlx5_vdpa_dev *mvdev, void *in, u32 *tisn); 63 void mlx5_vdpa_destroy_tis(struct mlx5_vdpa_dev *mvdev, u32 tisn); 64 int mlx5_vdpa_create_rqt(struct mlx5_vdpa_dev *mvdev, void *in, int inlen, u32 *rqtn); 65 void mlx5_vdpa_destroy_rqt(struct mlx5_vdpa_dev *mvdev, u32 rqtn); 66 int mlx5_vdpa_create_tir(struct mlx5_vdpa_dev *mvdev, void *in, u32 *tirn); 67 void mlx5_vdpa_destroy_tir(struct mlx5_vdpa_dev *mvdev, u32 tirn); 68 int mlx5_vdpa_alloc_transport_domain(struct mlx5_vdpa_dev *mvdev, u32 *tdn); 69 void mlx5_vdpa_dealloc_transport_domain(struct mlx5_vdpa_dev *mvdev, u32 tdn); 70 int mlx5_vdpa_alloc_resources(struct mlx5_vdpa_dev *mvdev); 71 void mlx5_vdpa_free_resources(struct mlx5_vdpa_dev *mvdev); 72 int mlx5_vdpa_create_mkey(struct mlx5_vdpa_dev *mvdev, struct mlx5_core_mkey *mkey, u32 *in, 73 int inlen); 74 int mlx5_vdpa_destroy_mkey(struct mlx5_vdpa_dev *mvdev, struct mlx5_core_mkey *mkey); 75 int mlx5_vdpa_handle_set_map(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb, 76 bool *change_map); 77 int mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb); 78 void mlx5_vdpa_destroy_mr(struct mlx5_vdpa_dev *mvdev); 79 80 #define mlx5_vdpa_warn(__dev, format, ...) \ 81 dev_warn((__dev)->mdev->device, "%s:%d:(pid %d) warning: " format, __func__, __LINE__, \ 82 current->pid, ##__VA_ARGS__) 83 84 #define mlx5_vdpa_info(__dev, format, ...) \ 85 dev_info((__dev)->mdev->device, "%s:%d:(pid %d): " format, __func__, __LINE__, \ 86 current->pid, ##__VA_ARGS__) 87 88 #define mlx5_vdpa_dbg(__dev, format, ...) \ 89 dev_debug((__dev)->mdev->device, "%s:%d:(pid %d): " format, __func__, __LINE__, \ 90 current->pid, ##__VA_ARGS__) 91 92 #endif /* __MLX5_VDPA_H__ */ 93