diff options
Diffstat (limited to 'drivers/vfio/pci/pds/lm.h')
| -rw-r--r-- | drivers/vfio/pci/pds/lm.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/vfio/pci/pds/lm.h b/drivers/vfio/pci/pds/lm.h new file mode 100644 index 0000000000..13be893198 --- /dev/null +++ b/drivers/vfio/pci/pds/lm.h @@ -0,0 +1,41 @@ +/* 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_ */ |