/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright(c) 2023 Advanced Micro Devices, Inc. */ #ifndef _LM_H_ #define _LM_H_ #include <linux/fs.h> #include <linux/mutex.h> #include <linux/scatterlist.h> #include <linux/types.h> #include <linux/pds/pds_common.h> #include <linux/pds/pds_adminq.h> struct pds_vfio_lm_file { struct file *filep; struct mutex lock; /* protect live migration data file */ u64 size; /* Size with valid data */ u64 alloc_size; /* Total allocated size. Always >= len */ void *page_mem; /* memory allocated for pages */ struct page **pages; /* Backing pages for file */ unsigned long long npages; struct sg_table sg_table; /* SG table for backing pages */ struct pds_lm_sg_elem *sgl; /* DMA mapping */ dma_addr_t sgl_addr; u16 num_sge; struct scatterlist *last_offset_sg; /* Iterator */ unsigned int sg_last_entry; unsigned long last_offset; }; struct pds_vfio_pci_device; struct file * pds_vfio_step_device_state_locked(struct pds_vfio_pci_device *pds_vfio, enum vfio_device_mig_state next); void pds_vfio_put_save_file(struct pds_vfio_pci_device *pds_vfio); void pds_vfio_put_restore_file(struct pds_vfio_pci_device *pds_vfio); #endif /* _LM_H_ */