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61a2f1460f
Manage the VF attach/detach callback from the PF. This lets the driver to enable parallel VFs migration as will be introduced in the next patch. As part of this, reorganize the VF is migratable code to be in a separate function and rename it to be set_migratable() to match its functionality. Link: https://lore.kernel.org/r/20220510090206.90374-3-yishaih@nvidia.com Signed-off-by: Yishai Hadas <yishaih@nvidia.com> Reviewed-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
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/*
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* Copyright (c) 2021-2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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*/
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#ifndef MLX5_VFIO_CMD_H
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#define MLX5_VFIO_CMD_H
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#include <linux/kernel.h>
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#include <linux/vfio_pci_core.h>
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#include <linux/mlx5/driver.h>
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struct mlx5_vf_migration_file {
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struct file *filp;
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struct mutex lock;
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bool disabled;
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struct sg_append_table table;
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size_t total_length;
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size_t allocated_length;
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/* Optimize mlx5vf_get_migration_page() for sequential access */
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struct scatterlist *last_offset_sg;
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unsigned int sg_last_entry;
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unsigned long last_offset;
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};
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struct mlx5vf_pci_core_device {
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struct vfio_pci_core_device core_device;
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int vf_id;
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u16 vhca_id;
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u8 migrate_cap:1;
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u8 deferred_reset:1;
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u8 mdev_detach:1;
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/* protect migration state */
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struct mutex state_mutex;
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enum vfio_device_mig_state mig_state;
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/* protect the reset_done flow */
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spinlock_t reset_lock;
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struct mlx5_vf_migration_file *resuming_migf;
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struct mlx5_vf_migration_file *saving_migf;
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struct notifier_block nb;
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struct mlx5_core_dev *mdev;
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};
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int mlx5vf_cmd_suspend_vhca(struct pci_dev *pdev, u16 vhca_id, u16 op_mod);
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int mlx5vf_cmd_resume_vhca(struct pci_dev *pdev, u16 vhca_id, u16 op_mod);
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int mlx5vf_cmd_query_vhca_migration_state(struct pci_dev *pdev, u16 vhca_id,
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size_t *state_size);
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int mlx5vf_cmd_get_vhca_id(struct pci_dev *pdev, u16 function_id, u16 *vhca_id);
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void mlx5vf_cmd_set_migratable(struct mlx5vf_pci_core_device *mvdev);
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void mlx5vf_cmd_remove_migratable(struct mlx5vf_pci_core_device *mvdev);
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int mlx5vf_cmd_save_vhca_state(struct pci_dev *pdev, u16 vhca_id,
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struct mlx5_vf_migration_file *migf);
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int mlx5vf_cmd_load_vhca_state(struct pci_dev *pdev, u16 vhca_id,
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struct mlx5_vf_migration_file *migf);
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void mlx5vf_state_mutex_unlock(struct mlx5vf_pci_core_device *mvdev);
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#endif /* MLX5_VFIO_CMD_H */
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