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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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2e7c6feb4e
Only supporting a single region/range is limiting, wasteful, and in some cases broken (i.e. when there are large gaps in the iova memory ranges). Fix this by adding support for multiple regions based on what the device tells the driver it can support. Signed-off-by: Brett Creeley <brett.creeley@amd.com> Signed-off-by: Shannon Nelson <shannon.nelson@amd.com> Link: https://lore.kernel.org/r/20231117001207.2793-7-brett.creeley@amd.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright(c) 2023 Advanced Micro Devices, Inc. */
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#ifndef _DIRTY_H_
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#define _DIRTY_H_
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struct pds_vfio_region {
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unsigned long *host_seq;
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unsigned long *host_ack;
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u64 bmp_bytes;
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u64 size;
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u64 start;
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u64 page_size;
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struct pds_lm_sg_elem *sgl;
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dma_addr_t sgl_addr;
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u32 dev_bmp_offset_start_byte;
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u16 num_sge;
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};
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struct pds_vfio_dirty {
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struct pds_vfio_region *regions;
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u8 num_regions;
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bool is_enabled;
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};
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struct pds_vfio_pci_device;
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bool pds_vfio_dirty_is_enabled(struct pds_vfio_pci_device *pds_vfio);
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void pds_vfio_dirty_set_enabled(struct pds_vfio_pci_device *pds_vfio);
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void pds_vfio_dirty_set_disabled(struct pds_vfio_pci_device *pds_vfio);
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void pds_vfio_dirty_disable(struct pds_vfio_pci_device *pds_vfio,
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bool send_cmd);
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int pds_vfio_dma_logging_report(struct vfio_device *vdev, unsigned long iova,
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unsigned long length,
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struct iova_bitmap *dirty);
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int pds_vfio_dma_logging_start(struct vfio_device *vdev,
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struct rb_root_cached *ranges, u32 nnodes,
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u64 *page_size);
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int pds_vfio_dma_logging_stop(struct vfio_device *vdev);
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#endif /* _DIRTY_H_ */
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