| 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 | |
| 15 | struct 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 | |
| 33 | struct pds_vfio_pci_device; |
| 34 | |
| 35 | struct file * |
| 36 | pds_vfio_step_device_state_locked(struct pds_vfio_pci_device *pds_vfio, |
| 37 | enum vfio_device_mig_state next); |
| 38 | |
| 39 | void pds_vfio_put_save_file(struct pds_vfio_pci_device *pds_vfio); |
| 40 | void pds_vfio_put_restore_file(struct pds_vfio_pci_device *pds_vfio); |
| 41 | |
| 42 | #endif /* _LM_H_ */ |
| 43 |