43 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2/* Copyright(c) 2023 Advanced Micro Devices, Inc. */3 4#ifndef _LM_H_5#define _LM_H_6 7#include <linux/fs.h>8#include <linux/mutex.h>9#include <linux/scatterlist.h>10#include <linux/types.h>11 12#include <linux/pds/pds_common.h>13#include <linux/pds/pds_adminq.h>14 15struct pds_vfio_lm_file {16 struct file *filep;17 struct mutex lock; /* protect live migration data file */18 u64 size; /* Size with valid data */19 u64 alloc_size; /* Total allocated size. Always >= len */20 void *page_mem; /* memory allocated for pages */21 struct page **pages; /* Backing pages for file */22 unsigned long long npages;23 struct sg_table sg_table; /* SG table for backing pages */24 struct pds_lm_sg_elem *sgl; /* DMA mapping */25 dma_addr_t sgl_addr;26 u16 num_sge;27 struct scatterlist *last_offset_sg; /* Iterator */28 unsigned int sg_last_entry;29 unsigned long last_offset;30 bool disabled;31};32 33struct pds_vfio_pci_device;34 35struct file *36pds_vfio_step_device_state_locked(struct pds_vfio_pci_device *pds_vfio,37 enum vfio_device_mig_state next);38 39void pds_vfio_put_save_file(struct pds_vfio_pci_device *pds_vfio);40void pds_vfio_put_restore_file(struct pds_vfio_pci_device *pds_vfio);41 42#endif /* _LM_H_ */43