cmd.h (2274B)
1/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ 2/* 3 * Copyright (c) 2021-2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved. 4 */ 5 6#ifndef MLX5_VFIO_CMD_H 7#define MLX5_VFIO_CMD_H 8 9#include <linux/kernel.h> 10#include <linux/vfio_pci_core.h> 11#include <linux/mlx5/driver.h> 12 13struct mlx5vf_async_data { 14 struct mlx5_async_work cb_work; 15 struct work_struct work; 16 int status; 17 u32 pdn; 18 u32 mkey; 19 void *out; 20}; 21 22struct mlx5_vf_migration_file { 23 struct file *filp; 24 struct mutex lock; 25 u8 disabled:1; 26 u8 is_err:1; 27 28 struct sg_append_table table; 29 size_t total_length; 30 size_t allocated_length; 31 32 /* Optimize mlx5vf_get_migration_page() for sequential access */ 33 struct scatterlist *last_offset_sg; 34 unsigned int sg_last_entry; 35 unsigned long last_offset; 36 struct mlx5vf_pci_core_device *mvdev; 37 wait_queue_head_t poll_wait; 38 struct mlx5_async_ctx async_ctx; 39 struct mlx5vf_async_data async_data; 40}; 41 42struct mlx5vf_pci_core_device { 43 struct vfio_pci_core_device core_device; 44 int vf_id; 45 u16 vhca_id; 46 u8 migrate_cap:1; 47 u8 deferred_reset:1; 48 u8 mdev_detach:1; 49 /* protect migration state */ 50 struct mutex state_mutex; 51 enum vfio_device_mig_state mig_state; 52 /* protect the reset_done flow */ 53 spinlock_t reset_lock; 54 struct mlx5_vf_migration_file *resuming_migf; 55 struct mlx5_vf_migration_file *saving_migf; 56 struct workqueue_struct *cb_wq; 57 struct notifier_block nb; 58 struct mlx5_core_dev *mdev; 59}; 60 61int mlx5vf_cmd_suspend_vhca(struct mlx5vf_pci_core_device *mvdev, u16 op_mod); 62int mlx5vf_cmd_resume_vhca(struct mlx5vf_pci_core_device *mvdev, u16 op_mod); 63int mlx5vf_cmd_query_vhca_migration_state(struct mlx5vf_pci_core_device *mvdev, 64 size_t *state_size); 65void mlx5vf_cmd_set_migratable(struct mlx5vf_pci_core_device *mvdev); 66void mlx5vf_cmd_remove_migratable(struct mlx5vf_pci_core_device *mvdev); 67int mlx5vf_cmd_save_vhca_state(struct mlx5vf_pci_core_device *mvdev, 68 struct mlx5_vf_migration_file *migf); 69int mlx5vf_cmd_load_vhca_state(struct mlx5vf_pci_core_device *mvdev, 70 struct mlx5_vf_migration_file *migf); 71void mlx5vf_state_mutex_unlock(struct mlx5vf_pci_core_device *mvdev); 72void mlx5vf_disable_fds(struct mlx5vf_pci_core_device *mvdev); 73void mlx5vf_mig_file_cleanup_cb(struct work_struct *_work); 74#endif /* MLX5_VFIO_CMD_H */