f232836a91
In order to support dirty page tracking, the driver has to implement the VFIO subsystem's vfio_log_ops. This includes log_start, log_stop, and log_read_and_clear. All of the tracker resources are allocated and dirty tracking on the device is started during log_start. The resources are cleaned up and dirty tracking on the device is stopped during log_stop. The dirty pages are determined and reported during log_read_and_clear. In order to support these callbacks admin queue commands are used. All of the adminq queue command structures and implementations are included as part of this patch. PDS_LM_CMD_DIRTY_STATUS is added to query the current status of dirty tracking on the device. This includes if it's enabled (i.e. number of regions being tracked from the device's perspective) and the maximum number of regions supported from the device's perspective. PDS_LM_CMD_DIRTY_ENABLE is added to enable dirty tracking on the specified number of regions and their iova ranges. PDS_LM_CMD_DIRTY_DISABLE is added to disable dirty tracking for all regions on the device. PDS_LM_CMD_READ_SEQ and PDS_LM_CMD_DIRTY_WRITE_ACK are added to support reading and acknowledging the currently dirtied pages. Signed-off-by: Brett Creeley <brett.creeley@amd.com> Signed-off-by: Shannon Nelson <shannon.nelson@amd.com> Reviewed-by: Simon Horman <horms@kernel.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com> Link: https://lore.kernel.org/r/20230807205755.29579-7-brett.creeley@amd.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
25 lines
1.3 KiB
C
25 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright(c) 2023 Advanced Micro Devices, Inc. */
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#ifndef _CMDS_H_
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#define _CMDS_H_
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int pds_vfio_register_client_cmd(struct pds_vfio_pci_device *pds_vfio);
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void pds_vfio_unregister_client_cmd(struct pds_vfio_pci_device *pds_vfio);
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int pds_vfio_suspend_device_cmd(struct pds_vfio_pci_device *pds_vfio, u8 type);
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int pds_vfio_resume_device_cmd(struct pds_vfio_pci_device *pds_vfio, u8 type);
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int pds_vfio_get_lm_state_size_cmd(struct pds_vfio_pci_device *pds_vfio, u64 *size);
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int pds_vfio_get_lm_state_cmd(struct pds_vfio_pci_device *pds_vfio);
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int pds_vfio_set_lm_state_cmd(struct pds_vfio_pci_device *pds_vfio);
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void pds_vfio_send_host_vf_lm_status_cmd(struct pds_vfio_pci_device *pds_vfio,
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enum pds_lm_host_vf_status vf_status);
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int pds_vfio_dirty_status_cmd(struct pds_vfio_pci_device *pds_vfio,
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u64 regions_dma, u8 *max_regions,
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u8 *num_regions);
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int pds_vfio_dirty_enable_cmd(struct pds_vfio_pci_device *pds_vfio,
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u64 regions_dma, u8 num_regions);
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int pds_vfio_dirty_disable_cmd(struct pds_vfio_pci_device *pds_vfio);
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int pds_vfio_dirty_seq_ack_cmd(struct pds_vfio_pci_device *pds_vfio,
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u64 sgl_dma, u16 num_sge, u32 offset,
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u32 total_len, bool read_seq);
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#endif /* _CMDS_H_ */
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