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crypto: qat - add interface for live migration

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Extend the driver with a new interface to be used for VF live migration.
This allows to create and destroy a qat_mig_dev object that contains
a set of methods to allow to save and restore the state of QAT VF.
This interface will be used by the qat-vfio-pci module.

Signed-off-by: Xin Zeng <xin.zeng@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Xin Zeng
2024-03-06 21:58:53 +08:00
committed by Herbert Xu
parent bbfdde7d19
commit 0fce55e533
5 changed files with 189 additions and 1 deletions
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31
include/linux/qat/qat_mig_dev.h Normal file
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/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright(c) 2024 Intel Corporation */
#ifndef QAT_MIG_DEV_H_
#define QAT_MIG_DEV_H_
struct pci_dev;
struct qat_mig_dev {
void *parent_accel_dev;
u8 *state;
u32 setup_size;
u32 remote_setup_size;
u32 state_size;
s32 vf_id;
};
struct qat_mig_dev *qat_vfmig_create(struct pci_dev *pdev, int vf_id);
int qat_vfmig_init(struct qat_mig_dev *mdev);
void qat_vfmig_cleanup(struct qat_mig_dev *mdev);
void qat_vfmig_reset(struct qat_mig_dev *mdev);
int qat_vfmig_open(struct qat_mig_dev *mdev);
void qat_vfmig_close(struct qat_mig_dev *mdev);
int qat_vfmig_suspend(struct qat_mig_dev *mdev);
int qat_vfmig_resume(struct qat_mig_dev *mdev);
int qat_vfmig_save_state(struct qat_mig_dev *mdev);
int qat_vfmig_save_setup(struct qat_mig_dev *mdev);
int qat_vfmig_load_state(struct qat_mig_dev *mdev);
int qat_vfmig_load_setup(struct qat_mig_dev *mdev, int size);
void qat_vfmig_destroy(struct qat_mig_dev *mdev);
#endif /*QAT_MIG_DEV_H_*/