diff options
Diffstat (limited to 'drivers/vdpa/mlx5/core/mlx5_vdpa.h')
-rw-r--r-- | drivers/vdpa/mlx5/core/mlx5_vdpa.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/drivers/vdpa/mlx5/core/mlx5_vdpa.h b/drivers/vdpa/mlx5/core/mlx5_vdpa.h new file mode 100644 index 0000000000..ca56242972 --- /dev/null +++ b/drivers/vdpa/mlx5/core/mlx5_vdpa.h @@ -0,0 +1,136 @@ +/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ +/* Copyright (c) 2020 Mellanox Technologies Ltd. */ + +#ifndef __MLX5_VDPA_H__ +#define __MLX5_VDPA_H__ + +#include <linux/etherdevice.h> +#include <linux/vringh.h> +#include <linux/vdpa.h> +#include <linux/mlx5/driver.h> + +#define MLX5V_ETH_HARD_MTU (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN) + +struct mlx5_vdpa_direct_mr { + u64 start; + u64 end; + u32 perm; + u32 mr; + struct sg_table sg_head; + int log_size; + int nsg; + int nent; + struct list_head list; + u64 offset; +}; + +struct mlx5_vdpa_mr { + u32 mkey; + + /* list of direct MRs descendants of this indirect mr */ + struct list_head head; + unsigned long num_directs; + unsigned long num_klms; + /* state of dvq mr */ + bool initialized; + + /* serialize mkey creation and destruction */ + struct mutex mkey_mtx; + bool user_mr; +}; + +struct mlx5_vdpa_resources { + u32 pdn; + struct mlx5_uars_page *uar; + void __iomem *kick_addr; + u64 phys_kick_addr; + u16 uid; + u32 null_mkey; + bool valid; +}; + +struct mlx5_control_vq { + struct vhost_iotlb *iotlb; + /* spinlock to synchronize iommu table */ + spinlock_t iommu_lock; + struct vringh vring; + bool ready; + u64 desc_addr; + u64 device_addr; + u64 driver_addr; + struct vdpa_callback event_cb; + struct vringh_kiov riov; + struct vringh_kiov wiov; + unsigned short head; + unsigned int received_desc; + unsigned int completed_desc; +}; + +struct mlx5_vdpa_wq_ent { + struct work_struct work; + struct mlx5_vdpa_dev *mvdev; +}; + +enum { + MLX5_VDPA_DATAVQ_GROUP, + MLX5_VDPA_CVQ_GROUP, + MLX5_VDPA_NUMVQ_GROUPS +}; + +enum { + MLX5_VDPA_NUM_AS = MLX5_VDPA_NUMVQ_GROUPS +}; + +struct mlx5_vdpa_dev { + struct vdpa_device vdev; + struct mlx5_core_dev *mdev; + struct mlx5_vdpa_resources res; + + u64 mlx_features; + u64 actual_features; + u8 status; + u32 max_vqs; + u16 max_idx; + u32 generation; + + struct mlx5_vdpa_mr mr; + struct mlx5_control_vq cvq; + struct workqueue_struct *wq; + unsigned int group2asid[MLX5_VDPA_NUMVQ_GROUPS]; + bool suspended; +}; + +int mlx5_vdpa_create_tis(struct mlx5_vdpa_dev *mvdev, void *in, u32 *tisn); +void mlx5_vdpa_destroy_tis(struct mlx5_vdpa_dev *mvdev, u32 tisn); +int mlx5_vdpa_create_rqt(struct mlx5_vdpa_dev *mvdev, void *in, int inlen, u32 *rqtn); +int mlx5_vdpa_modify_rqt(struct mlx5_vdpa_dev *mvdev, void *in, int inlen, u32 rqtn); +void mlx5_vdpa_destroy_rqt(struct mlx5_vdpa_dev *mvdev, u32 rqtn); +int mlx5_vdpa_create_tir(struct mlx5_vdpa_dev *mvdev, void *in, u32 *tirn); +void mlx5_vdpa_destroy_tir(struct mlx5_vdpa_dev *mvdev, u32 tirn); +int mlx5_vdpa_alloc_transport_domain(struct mlx5_vdpa_dev *mvdev, u32 *tdn); +void mlx5_vdpa_dealloc_transport_domain(struct mlx5_vdpa_dev *mvdev, u32 tdn); +int mlx5_vdpa_alloc_resources(struct mlx5_vdpa_dev *mvdev); +void mlx5_vdpa_free_resources(struct mlx5_vdpa_dev *mvdev); +int mlx5_vdpa_create_mkey(struct mlx5_vdpa_dev *mvdev, u32 *mkey, u32 *in, + int inlen); +int mlx5_vdpa_destroy_mkey(struct mlx5_vdpa_dev *mvdev, u32 mkey); +int mlx5_vdpa_handle_set_map(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb, + bool *change_map, unsigned int asid); +int mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb, + unsigned int asid); +void mlx5_vdpa_destroy_mr(struct mlx5_vdpa_dev *mvdev); +void mlx5_vdpa_destroy_mr_asid(struct mlx5_vdpa_dev *mvdev, unsigned int asid); + +#define mlx5_vdpa_warn(__dev, format, ...) \ + dev_warn((__dev)->mdev->device, "%s:%d:(pid %d) warning: " format, __func__, __LINE__, \ + current->pid, ##__VA_ARGS__) + +#define mlx5_vdpa_info(__dev, format, ...) \ + dev_info((__dev)->mdev->device, "%s:%d:(pid %d): " format, __func__, __LINE__, \ + current->pid, ##__VA_ARGS__) + +#define mlx5_vdpa_dbg(__dev, format, ...) \ + dev_debug((__dev)->mdev->device, "%s:%d:(pid %d): " format, __func__, __LINE__, \ + current->pid, ##__VA_ARGS__) + +#endif /* __MLX5_VDPA_H__ */ |