162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci/* Copyright(c) 2023 Advanced Micro Devices, Inc. */ 362306a36Sopenharmony_ci 462306a36Sopenharmony_ci#ifndef _LM_H_ 562306a36Sopenharmony_ci#define _LM_H_ 662306a36Sopenharmony_ci 762306a36Sopenharmony_ci#include <linux/fs.h> 862306a36Sopenharmony_ci#include <linux/mutex.h> 962306a36Sopenharmony_ci#include <linux/scatterlist.h> 1062306a36Sopenharmony_ci#include <linux/types.h> 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_ci#include <linux/pds/pds_common.h> 1362306a36Sopenharmony_ci#include <linux/pds/pds_adminq.h> 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_cistruct pds_vfio_lm_file { 1662306a36Sopenharmony_ci struct file *filep; 1762306a36Sopenharmony_ci struct mutex lock; /* protect live migration data file */ 1862306a36Sopenharmony_ci u64 size; /* Size with valid data */ 1962306a36Sopenharmony_ci u64 alloc_size; /* Total allocated size. Always >= len */ 2062306a36Sopenharmony_ci void *page_mem; /* memory allocated for pages */ 2162306a36Sopenharmony_ci struct page **pages; /* Backing pages for file */ 2262306a36Sopenharmony_ci unsigned long long npages; 2362306a36Sopenharmony_ci struct sg_table sg_table; /* SG table for backing pages */ 2462306a36Sopenharmony_ci struct pds_lm_sg_elem *sgl; /* DMA mapping */ 2562306a36Sopenharmony_ci dma_addr_t sgl_addr; 2662306a36Sopenharmony_ci u16 num_sge; 2762306a36Sopenharmony_ci struct scatterlist *last_offset_sg; /* Iterator */ 2862306a36Sopenharmony_ci unsigned int sg_last_entry; 2962306a36Sopenharmony_ci unsigned long last_offset; 3062306a36Sopenharmony_ci}; 3162306a36Sopenharmony_ci 3262306a36Sopenharmony_cistruct pds_vfio_pci_device; 3362306a36Sopenharmony_ci 3462306a36Sopenharmony_cistruct file * 3562306a36Sopenharmony_cipds_vfio_step_device_state_locked(struct pds_vfio_pci_device *pds_vfio, 3662306a36Sopenharmony_ci enum vfio_device_mig_state next); 3762306a36Sopenharmony_ci 3862306a36Sopenharmony_civoid pds_vfio_put_save_file(struct pds_vfio_pci_device *pds_vfio); 3962306a36Sopenharmony_civoid pds_vfio_put_restore_file(struct pds_vfio_pci_device *pds_vfio); 4062306a36Sopenharmony_ci 4162306a36Sopenharmony_ci#endif /* _LM_H_ */ 42